1
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Fang Y, Lu X, Xiao J, Zhang SY, Lu Q. Thermally Stable and Transparent Polyimide Derived from Side-Group-Regulated Spirobifluorene Unit for Substrate Application. Macromol Rapid Commun 2024; 45:e2400245. [PMID: 39012277 DOI: 10.1002/marc.202400245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/03/2024] [Indexed: 07/17/2024]
Abstract
Advancements in flexible electronic technology, especially the progress in foldable displays and under-display cameras (UDC), have created an urgent demand for high-performance colorless polyimide (CPI). However, current CPIs lack sufficient heat resistance for substrate applications. In this work, four kinds of rigid spirobifluorene diamines are designed, and the corresponding polyimides are prepared by their condensation with 5,5'-(perfluoropropane-2,2-diyl) bis(isobenzofuran-1,3-dione) (6FDA) or 9,9-bis(3,4-dicarboxyphenyl) fluorene dianhydride (BPAF). The rigid and conjugated spirobifluorene units endow the polyimides with higher glass transition temperature (Tg) ranging from 356 to 468 °C. Their optical properties are regulated by small side groups and spirobifluorene structure with a periodically twisted molecular conformation. Consequently, a series of CPIs with an average transmittance ranging from 75% to 88% and a yellowness index (YI) as low as 2.48 are obtained. Among these, 27SPFTFA-BPAF presents excellent comprehensive performance, with a Tg of 422 °C, a 5 wt.% loss temperature (Td5) of 562 °C, a YI of 3.53, and a tensile strength (δmax) of 140 MPa, respectively. The mechanism underlying the structure-property relationship is investigated by experimental comparison and theoretical calculation, and the proposed method provides a pathway for designing highly rigid conjugated CPIs with excellent thermal stability and transparency for photoelectric engineering.
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Affiliation(s)
- Yunzhi Fang
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Xuemin Lu
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Junjie Xiao
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Shu-Yu Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
- Qinghai Institute of Salt Lakes, Key Laboratory of Green and High-End Utilization of Salt Lake Resources, Chinese Academy of Sciences, Xining, 810008, P. R. China
| | - Qinghua Lu
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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2
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Li L, Jiang W, Yang X, Meng Y, Hu P, Huang C, Liu F. From Molecular Design to Practical Applications: Strategies for Enhancing the Optical and Thermal Performance of Polyimide Films. Polymers (Basel) 2024; 16:2315. [PMID: 39204535 PMCID: PMC11359642 DOI: 10.3390/polym16162315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2024] [Revised: 08/03/2024] [Accepted: 08/13/2024] [Indexed: 09/04/2024] Open
Abstract
Polyimide (PI) films are well recognized for their outstanding chemical resistance, radiation resistance, thermal properties, and mechanical strength, rendering them highly valuable in advanced fields such as aerospace, sophisticated electronic components, and semiconductors. However, improving their optical transparency while maintaining excellent thermal properties remains a significant challenge. This review systematically checks over recent advancements in enhancing the optical and thermal performance of PI films, focusing on various strategies through molecular design. These strategies include optimizing the main chain, side chain, non-coplanar structures, and endcap groups. Rigid and flexible structural characteristics in the proper combination can contribute to the balance thermal stability and optical transparency. Introducing fluorinated substituents and bulky side groups significantly reduces the formation of charge transfer complexes, enhancing both transparency and thermal properties. Non-coplanar structures, such as spiro and cardo configurations, further improve the optical properties while maintaining thermal stability. Future research trends include nanoparticle doping, intrinsic microporous PI polymers, photosensitive polyimides, machine learning-assisted molecular design, and metal coating techniques, which are expected to further enhance the comprehensive optical and thermal performance of PI films and expand their applications in flexible displays, solar cells, and high-performance electronic devices. Overall, systematic molecular design and optimization have significantly improved the optical and thermal performance of PI films, showing broad application prospects. This review aims to provide researchers with valuable references, stimulate more innovative research and applications, and promote the deep integration of PI films into modern technology and industry.
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Affiliation(s)
- Liangrong Li
- Fuzhou Medical School, Nanchang University, Fuzhou 344000, China; (L.L.); (W.J.); (X.Y.)
| | - Wendan Jiang
- Fuzhou Medical School, Nanchang University, Fuzhou 344000, China; (L.L.); (W.J.); (X.Y.)
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Xiaozhe Yang
- Fuzhou Medical School, Nanchang University, Fuzhou 344000, China; (L.L.); (W.J.); (X.Y.)
| | - Yundong Meng
- Jiangxi Shengyi Technology Co., Ltd., Jiujiang 332005, China; (Y.M.); (P.H.); (C.H.)
| | - Peng Hu
- Jiangxi Shengyi Technology Co., Ltd., Jiujiang 332005, China; (Y.M.); (P.H.); (C.H.)
| | - Cheng Huang
- Jiangxi Shengyi Technology Co., Ltd., Jiujiang 332005, China; (Y.M.); (P.H.); (C.H.)
| | - Feng Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
- Jiangxi Shengyi Technology Co., Ltd., Jiujiang 332005, China; (Y.M.); (P.H.); (C.H.)
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3
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Cao Y, Liu Z, Koros WJ. Above-T g Annealing Benefits in Nanoparticle-Stabilized Carbon Molecular Sieve Membrane Pyrolysis for Improved Gas Separation. Angew Chem Int Ed Engl 2024; 63:e202317864. [PMID: 38189768 DOI: 10.1002/anie.202317864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/09/2024]
Abstract
Nanoparticles can suppress asymmetric precursor support collapse during pyrolysis to create carbon molecular sieve (CMS) membranes. This advance allows elimination of standard sol-gel support stabilization steps. Here we report a simple but surprisingly important thermal soaking step at 400 °C in the pyrolysis process to obtain high performance CMS membranes. The composite CMS membranes show CO2 /CH4 (50 : 50) mixed gas feed with an attractive CO2 /CH4 selectivity of 134.2 and CO2 permeance of 71 GPU at 35 °C. Furthermore, a H2 /CH4 selectivity of 663 with H2 permeance of 240 GPU was achieved for promising green energy resource-H2 separation processes.
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Affiliation(s)
- Yuhe Cao
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr.NW, Atlanta, GA-30332, USA
| | - Zhongyun Liu
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr.NW, Atlanta, GA-30332, USA
| | - William J Koros
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr.NW, Atlanta, GA-30332, USA
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4
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Lian M, Zheng F, Meng L, Zhao F, Liu J, Song J, Lu Q. Comparison of Homo-Polyimide Films Derived from Two Isomeric Bis-Benzimidazole Diamines. Molecules 2023; 28:4889. [PMID: 37446551 PMCID: PMC10343788 DOI: 10.3390/molecules28134889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/16/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
Heteroaromatic polyimides (PIs) containing benzimidazole have attracted tremendous attention due to their positive impact on the properties of PIs. Some research on PIs containing 4,4'-[5,5'-bi-1H-benzimidazole]-2,2'-diylbis-benzenamine (4-AB) has been reported. However, reports are lacking on homo-polyimides (homo-PIs) containing 3,3'-[5,5'-bi-1H-benzimidazole]-2,2'-diylbis-benzenamine (3-AB), which is one of the isomers of 4-AB. In this paper, the influence of amino groups' positions on the performance of homo-PIs was investigated. It was found that the net charge of the amine N group in 4-AB was lower than that of 3-AB, resulting in higher reactivity of 4-AB. Consequently, PIs containing 4-AB displayed better mechanical performance. Molecular simulation confirmed that 3-AB and its corresponding PI chain exhibited distorted conformation, leading to the PI films containing 3-AB having a lighter color. In addition, the 3-AB structure was calculated to have higher rotational energy compared to 4-AB, resulting in a higher glass transition temperature (Tg) in PIs prepared from 3-AB. On the other hand, PIs containing 4-AB exhibited a higher level of molecular linearity, leading to a lower coefficient of thermal expansion (CTE) compared to PIs prepared from 3-AB. Furthermore, all PIs showed higher thermal stability with a 5% weight loss temperature above 530 °C and Tg higher than 400 °C.
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Affiliation(s)
- Meng Lian
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China; (M.L.); (L.M.); (F.Z.); (J.L.); (J.S.)
| | - Feng Zheng
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Lingbin Meng
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China; (M.L.); (L.M.); (F.Z.); (J.L.); (J.S.)
| | - Fei Zhao
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China; (M.L.); (L.M.); (F.Z.); (J.L.); (J.S.)
| | - Jun Liu
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China; (M.L.); (L.M.); (F.Z.); (J.L.); (J.S.)
| | - Jimei Song
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China; (M.L.); (L.M.); (F.Z.); (J.L.); (J.S.)
| | - Qinghua Lu
- Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Lian M, Zhao F, Liu J, Tong F, Meng L, Yang Y, Zheng F. The Pivotal Role of Benzimidazole in Improving the Thermal and Dielectric Performance of Upilex-Type Polyimide. Polymers (Basel) 2023; 15:polym15102343. [PMID: 37242916 DOI: 10.3390/polym15102343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/08/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023] Open
Abstract
Polyimide (PI) with ultra-high thermal resistance and stability is essential for application as a flexible substrate in electronic devices. Here, the Upilex-type polyimides, which contained flexibly "twisted" 4,4'-oxydianiline (ODA), have achieved various performance improvements via copolymerization with a diamine containing benzimidazole structure. With the rigid benzimidazole-based diamine bearing conjugated heterocyclic moieties and hydrogen bond donors fused into the PI backbone, the benzimidazole-containing PI showed outstanding thermal, mechanical, and dielectric performance. Specifically, the PI containing 50% bis-benzimidazole diamine achieved a 5% decomposition temperature at 554 °C, an excellent high glass transition temperature of 448 °C, and a coefficient of thermal expansion lowered to 16.1 ppm/K. Meanwhile, the tensile strength and modulus of the PI films containing 50% mono-benzimidazole diamine increased to 148.6 MPa and 4.1 GPa, respectively. Due to the synergistic effect of rigid benzimidazole and hinged, flexible ODA, all PI films exhibited an elongation at break above 4.3%. The electrical insulation of the PI films was also improved with a dielectric constant lowered to 1.29. In summary, with appropriate mixing of rigid and flexible moieties in the PI backbone, all the PI films showed superior thermal stability, excellent flexibility, and acceptable electrical insulation.
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Affiliation(s)
- Meng Lian
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China
| | - Fei Zhao
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China
| | - Jun Liu
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China
| | - Faqin Tong
- Shanghai Sinochem Technology Co., Ltd., Kangwei Road 299, Pudong New District, Shanghai 201210, China
| | - Lingbin Meng
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China
| | - Yongqi Yang
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources, Weifang University of Science and Technology, Weifang 262700, China
| | - Feng Zheng
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China
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6
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Ren X, Zhang Y, Liu Y, Yang C, Dai S, Wang X, Liu J. Preparation and Properties of Intrinsically Black Polyimide Films with CIE Lab Color Parameters Close to Zero and High Thermal Stability for Potential Applications in Flexible Printed Circuit Boards. Polymers (Basel) 2022; 14:polym14183881. [PMID: 36146026 PMCID: PMC9502500 DOI: 10.3390/polym14183881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/10/2022] [Accepted: 09/14/2022] [Indexed: 11/20/2022] Open
Abstract
Black polymer films with high thermal stability are highly desired in flexible electrical and electronic fields. Conventional black polymer films based on high-temperature resistant polymers and black inorganic dyes are usually suffered from the poor electrical and tensile properties. In the current work, a series of intrinsically black polyimide (BPI) films with International Commission on Illumination (CIE) Lab optical parameters close to zero and high thermal stability have been designed and prepared. For this purpose, an electron-rich aromatic diamine, 4,4′-iminodianiline (NDA), was copolymerized with 1,4-phenylenediamine (PDA) and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (sBPDA) to afford a series of poly(amic acid) (PAA) solutions, which were then thermally dehydrated to provide the final BPI films at elevated temperatures up to 400 °C in air. The molar fraction of NDA in the total diamine monomers was 0 for BPI-0 (sBPDA-PDA), 10% for BPI-1, 20% for BPI-2, 30% for BPI-3, 40% for BPI-4, 50% for BPI-5, and 100% for BPI-6. For comparison, two referenced polyimide (PI) films, including PI-ref1 and PI-ref2, were prepared according to a similar procedure. The former was derived from pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA) and the latter was from PMDA and NDA. The BPI films exhibited an increasing degree of blackness with the increasing contents of NDA units in the polymer films. For example, the BPI-6 (sBPDA-NDA) film exhibited the optical transmittance of 1.4% at a wavelength of 650 nm (T650), which was obviously lower than those of PI-ref1 (T650 = 74.6%) and PI-ref2 (T650 = 3.6%). In addition, the BPI-6 film showed the CIE Lab parameters of 0.39 for L*, 2.65 for a*, 0.66 for b*, and haze of 1.83, which was very close to the criterion of “pure blackness” for polymer films (L* = a* = b* = 0). At last, incorporation of the NDA units in the rigid-rod BPI-0 (BPDA-PDA) film slightly deteriorated the high-temperature dimensional stability of the derived BPI films. BPI-6 film showed a linear coefficient of thermal expansion (CTE) value of 34.8 × 10−6/K in the temperature range of 50 to 250 °C, which was higher than those of the BPI-0 (CTE = 12.3 × 10−6/K), PI-ref1 (CTE = 29.5 × 10−6/K), and PI-ref2 (CTE = 18.8 × 10−6/K) films. Nevertheless, the BPI films maintained good thermal stability with the 5% weight loss temperatures (T5%) higher than 590 °C, and the glass transition temperatures (Tg) higher than 340 °C.
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Affiliation(s)
| | - Yan Zhang
- Correspondence: (Y.Z.); (J.L.); Tel.: +86-10-8232-2972 (J.L.)
| | | | | | | | | | - Jingang Liu
- Correspondence: (Y.Z.); (J.L.); Tel.: +86-10-8232-2972 (J.L.)
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7
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Terraza CA, Cruz Y, Rodríguez A, Velázquez‐Tundidor MV, Hauyon RA, Rodríguez‐González FE, Niebla V, Aguilar‐Vega M, Sulub‐Sulub R, Coll D, Ortiz PA, Pérez YP, Comesaña‐Gándara B, Tundidor‐Camba A. New polyimides containing methyl benzamidobenzoate or dimethyl benzamidoisophthalate as bulky pendant groups. Effects on solubility, thermal and gas transport properties. J Appl Polym Sci 2022. [DOI: 10.1002/app.53036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Claudio A. Terraza
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry Pontificia Universidad Católica de Chile Santiago Chile
- UC Energy Research Center Pontificia Universidad Católica de Chile Santiago Chile
| | - Yennier Cruz
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry Pontificia Universidad Católica de Chile Santiago Chile
| | - Ary Rodríguez
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry Pontificia Universidad Católica de Chile Santiago Chile
| | - María Victoria Velázquez‐Tundidor
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry Pontificia Universidad Católica de Chile Santiago Chile
| | - René A. Hauyon
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry Pontificia Universidad Católica de Chile Santiago Chile
| | - Fidel E. Rodríguez‐González
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry Pontificia Universidad Católica de Chile Santiago Chile
| | - Vladimir Niebla
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry Pontificia Universidad Católica de Chile Santiago Chile
| | - Manuel Aguilar‐Vega
- Unidad de Materiales, Laboratorio de Membranas Centro de Investigación Científica de Yucatán A.C Mérida Mexico
| | - Rita Sulub‐Sulub
- Unidad de Materiales, Laboratorio de Membranas Centro de Investigación Científica de Yucatán A.C Mérida Mexico
| | - Deysma Coll
- Centro de Nanotecnología Aplicada y Núcleo de Química y Bioquímica, Facultad de Ciencias Ingeniería y Tecnología. Universidad Mayor Santiago Chile
| | - Pablo A. Ortiz
- Centro de Nanotecnología Aplicada, Facultad de Ciencias, Ingeniería y Tecnología Universidad Mayor Santiago Chile
| | - Yasmín P. Pérez
- Laboratory of Organic and Polymeric Materials, Faculty of Sciences, Department of Chemistry Universidad de Tarapacá Arica Chile
| | | | - Alain Tundidor‐Camba
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry Pontificia Universidad Católica de Chile Santiago Chile
- UC Energy Research Center Pontificia Universidad Católica de Chile Santiago Chile
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8
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Jiao L, Du Z, Dai X, Wang H, Dong Z, Yao H, Qiu X. Based on rigid xanthone group and hydrogen bonding to construct polyimide films with low coefficient of thermal expansion, high temperature resistance, and fluorescent property. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9
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Xie HY, Tang RH, Chen GE, Xu ZL, Mao HF. Highly heat-resistant NF membrane modified by quinoxaline diamines for Li+ extraction from the brine. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Jiao L, Zhang Y, Du Z, Dai X, Wang H, Dong Z, Yao H, Qiu X. Ultra‐high
T
g
and ultra‐low coefficient of thermal expansion polyimide films based on hydrogen bond interaction. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Long Jiao
- CAS Key Laboratory of High‐Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
- University of Science and Technology of China Hefei China
| | - Yanna Zhang
- The 39th Research Institute of China Electronics Technology Group Corporation Xi'an China
| | - Zhijun Du
- CAS Key Laboratory of High‐Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
| | - Xuemin Dai
- CAS Key Laboratory of High‐Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
| | - Hanfu Wang
- CAS Key Laboratory of High‐Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
| | - Zhixin Dong
- CAS Key Laboratory of High‐Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
| | - Haibo Yao
- CAS Key Laboratory of High‐Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
- University of Science and Technology of China Hefei China
| | - Xuepeng Qiu
- CAS Key Laboratory of High‐Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
- University of Science and Technology of China Hefei China
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11
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Wu X, Cai J, Cheng Y. Synthesis and characterization of high fluorine‐containing polyimides with low‐dielectric constant. J Appl Polym Sci 2022. [DOI: 10.1002/app.51972] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xueliang Wu
- Department of Materials Science Fudan University Shanghai China
| | - Jing Cai
- Department of Materials Science Fudan University Shanghai China
| | - Yuanrong Cheng
- Department of Materials Science Fudan University Shanghai China
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12
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Xiao P, He X, zheng F, Lu Q. Super-heat resistant, transparent and low dielectric polyimides based on spirocyclic bisbenzoxazole diamines with Tg > 450°C. Polym Chem 2022. [DOI: 10.1039/d2py00513a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Maintaining ultra-high heat resistance and sufficient colorless transparency at the same time is a challenge for polymer materials because of conflicting design principles, but such materials are urgently needed for...
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13
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Fang Y, He X, Kang JC, Wang L, Ding TM, Lu X, Zhang SY, Lu Q. Terphenyl-based colorless and heat-resistant polyimides with a controlled molecular structure using methyl side groups. Polym Chem 2022. [DOI: 10.1039/d2py00732k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A methyl regulation strategy is proposed and verified to balance the optical and thermal properties of aromatic polyimides.
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Affiliation(s)
- Yunzhi Fang
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Xiaojie He
- School of Chemical Science and Technology, Tongji University, Siping Road No. 1239, Shanghai, 200092, China
| | - Jun-Chen Kang
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Le Wang
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Tong-Mei Ding
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Xuemin Lu
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Shu-Yu Zhang
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Qinghua Lu
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
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14
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Zhou Y, Zhang S, Zheng F, Lu Q. Intrinsically Black Polyimide with Retained Insulation and Thermal Properties: A Black Anthraquinone Derivative Capable of Linear Copolymerization. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01422] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Zhou
- School of Chemical Science and Technology, Tongji University, Siping Road No. 1239, Shanghai 200092, China
| | - Songyang Zhang
- School of Chemical Science and Technology, Tongji University, Siping Road No. 1239, Shanghai 200092, China
| | - Feng Zheng
- School of Chemical Science and Technology, Tongji University, Siping Road No. 1239, Shanghai 200092, China
| | - Qinghua Lu
- School of Chemical Science and Technology, Tongji University, Siping Road No. 1239, Shanghai 200092, China
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai 200240, China
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15
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Liu TQ, Zheng F, Ma X, Ding TM, Chen S, Jiang W, Zhang SY, Lu Q. High heat-resistant polyimide films containing quinoxaline moiety for flexible substrate applications. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122963] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Synthesis and characterization of a novel organo-soluble polyimide containing hydroxyl and bis-tert-butyl substituted triphenylpyridine units. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02208-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lian M, Zheng F, Wu Q, Lu X, Lu Q. Incorporating bis‐benzimidazole into polyimide chains for effectively improving thermal resistance and dimensional stability. POLYM INT 2019. [DOI: 10.1002/pi.5922] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Meng Lian
- Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai China
| | - Feng Zheng
- School of Chemical Science and EngineeringTongji University Shanghai China
| | - Qi Wu
- Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai China
| | - Xuemin Lu
- Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai China
| | - Qinghua Lu
- Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai China
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