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High temperature phenylethynyl-terminated imide oligomers derived from asymmetric diphenyl ether diamines for resin transfer molding. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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2
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Xu Q, Shi X, Li Y, Zeng F, Deng P, Su Z. Novel acetylene‐terminated thermosetting polyisoimides with excellent solubility and performed as efficient heat shields composites. J Appl Polym Sci 2022. [DOI: 10.1002/app.51559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qinging Xu
- School of Materials Science and Engineering Changchun University of Science and Technology Changchun China
| | - Xincui Shi
- School of Chemistry and Environmental Engineering Changchun University of Science and Technology Changchun China
| | - Yunhui Li
- School of Chemistry and Environmental Engineering Changchun University of Science and Technology Changchun China
| | - Fanming Zeng
- School of Materials Science and Engineering Changchun University of Science and Technology Changchun China
- Collaborative Innovation Center of Optical Materials and Chemistry Changchun University of Science and Technology Changchun China
| | - Pengyang Deng
- Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun China
| | - Zhongmin Su
- School of Materials Science and Engineering Changchun University of Science and Technology Changchun China
- Collaborative Innovation Center of Optical Materials and Chemistry Changchun University of Science and Technology Changchun China
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Hong W, Yuan L, Ma Y, Cui C, Zhang H, Yang S, Sun WH. Resin Transfer Moldable Fluorinated Phenylethynyl-Terminated Imide Oligomers with High T g: Structure-Melt Stability Relationship. Polymers (Basel) 2021; 13:polym13060903. [PMID: 33804261 PMCID: PMC7999610 DOI: 10.3390/polym13060903] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 11/16/2022] Open
Abstract
Phenylethynyl-terminated aromatic polyimides meet requirements of resin transfer molding (RTM) and exhibits high glass transition temperature (Tg) were prepared. Moreover, the relationship between the polyimide backbones structure and their melting stability was investigated. The phenylethynyl-terminated polyimides were based on 4,4′-(hexafluorosiopropylidene)-diphthalic anhydride (6FDA) and different diamines of 3,4′-oxydianiline (3,4′-ODA), m-phenylenediamine (m-PDA) and 2,2′-bis(trifluoromethyl)benzidine (TFDB) were prepared. These oligoimides exhibit excellent melting flowability with wide processing temperature window and low minimum melt viscosities (<1 Pa·s). Two of the oligoimides display good melting stability at 280–290 °C, which meet the requirements of resin transfer molding (RTM) process. After thermally cured, all resins show high glass transition temperatures (Tgs, 363–391 °C) and good tensile strength (51–66 MPa). The cure kinetics studied by the differential scanning calorimetry (DSC), 13C nuclear magnetic resonance (13C NMR) characterization and density functional theory (DFT) definitely confirmed that the electron-withdrawing ability of oligoimide backbone can tremendously affect the curing reactivity of terminated phenylethynyl groups. The replacement of 3,4′-ODA units by m-PDA or TFDB units increase the electron-withdrawing ability of the backbone, which increase the curing rate of terminated phenylethynyl groups at processing temperatures, hence results in the worse melting stability.
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Affiliation(s)
- Weijie Hong
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, China; (W.H.); (H.Z.)
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lili Yuan
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, China; (W.H.); (H.Z.)
- Correspondence: (L.Y.); (S.Y.)
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.M.); (W.-H.S.)
| | - Chao Cui
- Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China;
| | - Haoyang Zhang
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, China; (W.H.); (H.Z.)
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shiyong Yang
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, China; (W.H.); (H.Z.)
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (L.Y.); (S.Y.)
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.M.); (W.-H.S.)
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Ye Q, Yuan Q, Huang F. Preparation and properties of propargyl ether-terminated poly(imide siloxane)s and their composites. HIGH PERFORM POLYM 2020. [DOI: 10.1177/0954008320954523] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The novel propargyl ether-terminated oligo(imide siloxane)s (PTISs) based on 2,2’-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA), aminopropyl-terminated polydimethylsiloxane (APPS), 4,4’-diaminodiphenylmethane (MDA) and p-aminophenyl propargyl ether (APPE) were synthesized. The chemical structures of PTISs were characterized by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR). The PTISs exhibited excellent solubility in organic solvent and had broad processing window. The T300 carbon fabric was used to reinforce the PTIS matrices and prepare the composites (T300CF/PTISs). The thermal stability of the cured PTISs was analyzed by thermogravimetric analysis (TGA). The dynamic thermal mechanical properties of the composites were measured by dynamic thermomechanical analysis (DMA). The results show that the temperature at 5% weight loss (Td5) and residual yield at 800°C (Yr800°C) of the cured PTISs in N2 increase with incorporation of the aromatic diamine, whereas the Yr800°C of the cured PTISs in air decreases with introduction of the aromatic diamine. The elasticity of the composite increases with incorporation of the aromatic diamine, and the peak temperature of loss factor for the composites are higher than 300°C. The flexural strength, tensile strength and interlaminar layer shear strength (ILSS) of the T300CF/PTIS composite display the values of 439 MPa, 427 MPa and 32 MPa at room temperature, respectively. The retention of the flexural strength and ILSS for the T300CF/PTIS composite are above 80% at 250°C.
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Affiliation(s)
- Qing Ye
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Qiaolong Yuan
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Farong Huang
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
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Cao H, Liu B, Ye Y, Liu Y, Li P. Study on the Relationships between Microscopic Cross-Linked Network Structure and Properties of Cyanate Ester Self-Reinforced Composites. Polymers (Basel) 2019; 11:E950. [PMID: 31159387 PMCID: PMC6631108 DOI: 10.3390/polym11060950] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/21/2019] [Accepted: 05/27/2019] [Indexed: 11/25/2022] Open
Abstract
Bisphenol A dicyanate (BADCy) resin microparticles were prepared by precipitation polymerization synthesis and were homogeneously dispersed in a BADCy prepolymer matrix to prepare a BADCy self-reinforced composites. The active functional groups of the BADCy resin microparticles were characterized by Fourier transform infrared (FT-IR) spectroscopy. The results of an FT-IR curve showed that the BADCy resin microparticles had a triazine ring functional group and also had an active reactive group -OCN, which can initiate a reaction with the matrix. The structure of the BADCy resin microparticles was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). From the TEM results, the BADCy resin microparticles dispersed in the solvent were nano-sized and distributed at 40-60 nm. However, from the SEM results, agglomeration occurred after drying, the BADCy resin particels were micron-sized and distributed between 0.3 μm and 0.6 μm. The BADCy resin prepolymer was synthesized in our laboratory. A BADCy self-reinforced composite was prepared by using BADCy resin microparticles as a reinforcement phase. This corresponds to a composite in which the matrix and reinforcement phase are made from different morphologies of the same monomer. The DSC curve showed that the heat flow of the microparticles is different from the matrix during the curing reaction, this means the cured materials should be a microscopic two-phase structure. The added BADCy resin microparticles as reaction sites induced the formation of a more complete and regular cured polymer structure, optimizing the cross-linked network as well as increasing the interplay between the BADCy resin microparticles and prepolymer matrix. Relative to the neat BADCy resin material, the tensile strength, flexural strength, compressive strength and impact strength increased by 98.1%, 40.2%, 27.4%, and 85.4%, respectively. A particle toughening mechanism can be used to explain the improvement of toughness. The reduction in the dielectric constant showed that the cross-linked network of the self-reinforced composite was more symmetrical and less polar than the neat resin material, which supports the enhanced mechanical properties of the self-reinforced composite. In addition, the thermal behavior of the self-reinforced composite was characterized by thermogravimetric analysis (TGA) and dynamic mechanical thermal analysis (DMTA). The results of DMTA also establishes a basis for enhancing mechanical properties of the self-reinforced composite.
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Affiliation(s)
- Hongtao Cao
- Research Institute of Carbon Fiber and Composite Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Beijun Liu
- Research Institute of Carbon Fiber and Composite Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Yiwen Ye
- Research Institute of Carbon Fiber and Composite Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Yunfang Liu
- Research Institute of Carbon Fiber and Composite Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Peng Li
- Research Institute of Carbon Fiber and Composite Materials, Beijing University of Chemical Technology, Beijing 100029, China.
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Qu C, Hou X, Liu C, Wang D, Xiao W, Li L, Chang J. Synthesis and properties of acetylene-terminated isoimide and imide oligomers exhibiting excellent solubility behaviors in low boiling point solvents. HIGH PERFORM POLYM 2018. [DOI: 10.1177/0954008317713070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Chunyan Qu
- Institute of Petrochemistry, Heilongjiang Academy of Science, Harbin, China
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Ma L, Zhu G, Liu C, Qu C, Jia H, Li L, Cao Z, Zhang H. Synthesis, characterization, and properties of thermoplastic polyimides derived from 4,4’-(hexafluoroisopropylidene)diphthalic anhydride in diethylene glycol dimethyl ether. HIGH PERFORM POLYM 2017. [DOI: 10.1177/0954008317737823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
By regulating the order of monomer addition, four kinds of copolymer polyimides (PIs) were prepared using diethylene glycol dimethyl ether (DEGDE) and N, N-dimethylacetamide (DMAc) as the solvents. The molecular weights of polyamide acids (PAAs) ranged from 3.8 × 105 to 9.2 × 105. All of the films displayed high glass transition temperatures ( Tgs) ranging from 313°C to 346°C. The polymer films show excellent thermal stabilities with 5% weight loss at temperatures of 505–524°C and char yields at 800°C were as high as 55% under nitrogen. The peel strengths of flexible copper (Cu) clads were in the range from 0.337 N cm−1 to 0.598 N cm−1. Compared to the molecular weight and peel strength of fresh PAA, those of PAAs prepared using DMAc significantly decreased after storage for 3 months at 0°C. However, when DEGDE was used as the solvent, the molecular weights of the PAAs and the thermal properties of the PIs were maintained after long storage time.
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Affiliation(s)
- Liqun Ma
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China
| | - Guangyu Zhu
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China
| | - Changwei Liu
- Institute of Petro chemistry, Heilongjiang Academy of Science, Harbin, China
| | - Chunyan Qu
- Institute of Petro chemistry, Heilongjiang Academy of Science, Harbin, China
| | - Hongge Jia
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China
| | - Liaoliao Li
- Institute of Petro chemistry, Heilongjiang Academy of Science, Harbin, China
| | - Zhibo Cao
- Alan G. MacDiarmid Institute, Jilin University, Changchun, China
| | - Hui Zhang
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China
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Cheng S, Han J, Wang X, Yuan K, Jian X, Wang J. Oxidatively stable thermosets derived from thermal copolymerization of acetylene-terminated imide monomer with an acetylenic monomer containing carborane. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.02.070] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yang Y, Park JH, Jung Y, Lee SG, Park SK, Kwon S. Effect of fluorination on haze reduction in transparent polyimide films for flexible substrates. J Appl Polym Sci 2016. [DOI: 10.1002/app.44375] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yooseong Yang
- Energy Materials Laboratory; Samsung Advanced Institute of Technology, Samsung Electronics Co, Ltd; 130 Samsung-ro, Yeongtong-gu Suwon-si Gyeonggi-do 16678 Republic of Korea
| | - Jong Hwan Park
- Energy Materials Laboratory; Samsung Advanced Institute of Technology, Samsung Electronics Co, Ltd; 130 Samsung-ro, Yeongtong-gu Suwon-si Gyeonggi-do 16678 Republic of Korea
| | - Youngsuk Jung
- Analytical Science Group, Samsung Advanced Institute of Technology, Samsung Electronics Co, Ltd; 130 Samsung-ro, Yeongtong-gu Suwon-si Gyeonggi-do 16678 Republic of Korea
| | - Seung Geol Lee
- Department of Organic Material Science and Engineering; Pusan National University; 2 Busandaehak-ro, 63beon-gil Geumjeong-gu Busan 46241 Republic of Korea
| | - Sang Kil Park
- Department of Civil and Environmental Engineering; Pusan National University; 2 Busandaehak-ro Geumjeong-gu Busan 46241 Republic of Korea
| | - Soonchul Kwon
- Department of Civil and Environmental Engineering; Pusan National University; 2 Busandaehak-ro Geumjeong-gu Busan 46241 Republic of Korea
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Rigana MF, Thirukumaran P, Shanthi K, Sarojadevi M. Synthesis and characterization of hyperbranched polyether imides based on 1,3,5-tris[4-(4′-aminophenoxy)phenoxy]benzene. RSC Adv 2016. [DOI: 10.1039/c5ra26679c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A new triamine monomer 1,3,5-tris[4-(4′-aminophenoxy)phenoxy]benzene, was synthesized by a three step process using hydroquinone, 1-chloro-4-nitrobenzene and 1,3,5-trichlorobenzene.
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Affiliation(s)
| | | | - K. Shanthi
- Department of Chemistry
- Anna University
- Chennai-600025
- India
| | - M. Sarojadevi
- Department of Chemistry
- Anna University
- Chennai-600025
- India
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Yu P, Wang Y, Yu J, Zhu J, Hu Z. Novel acetylene-terminated polyimide oligomers with excellent processability and high toughness of films. J Appl Polym Sci 2015. [DOI: 10.1002/app.42537] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ping Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; Donghua University; Shanghai 201620 People's Republic of China
| | - Yan Wang
- College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Junrong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; Donghua University; Shanghai 201620 People's Republic of China
| | - Jing Zhu
- College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Zuming Hu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; Donghua University; Shanghai 201620 People's Republic of China
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Yang Y, Jung Y, Cho MD, Lee SG, Kwon S. Transient color changes in oxidative-stable fluorinated polyimide film for flexible display substrates. RSC Adv 2015. [DOI: 10.1039/c5ra06066d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stable optical properties of high transmittance and low yellow index, which are required for a polyimide film as a flexible display substrate could be affected by thermal imidization even in oxidative-stable fluorinated polyimides.
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Affiliation(s)
| | - Youngsuk Jung
- Department of Chemistry
- Seoul National University
- Seoul 151-747
- Korea
| | | | - Seung Geol Lee
- Department of Organic Material Science and Engineering
- Pusan National University
- Busan
- Korea
| | - Soonchul Kwon
- School of Civil and Environmental Engineering
- Georgia Institute of Technology
- Atlanta
- USA
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Meng X, Yan J, Fan W, Liu J, Wang Z, Li G. Thermosetting polyimides and composites based on highly soluble phenylethynyl-terminated isoimide oligomers. RSC Adv 2014. [DOI: 10.1039/c4ra05231e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly soluble phenylethynyl-terminated isoimide oligomers were investigated as matrix resins which can produce high performance thermosetting polyimides and composites.
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Affiliation(s)
- Xiangsheng Meng
- University of Chinese Academy of Sciences
- Beijing 100049, China
- Polymer Composites Engineering Laboratory
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
| | - Jingling Yan
- Polymer Composites Engineering Laboratory
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Weifeng Fan
- University of Chinese Academy of Sciences
- Beijing 100049, China
- Polymer Composites Engineering Laboratory
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
| | - Jingfeng Liu
- Polymer Composites Engineering Laboratory
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Zhen Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Guodong Li
- College of Chemistry
- Jilin University
- Changchun 130012, China
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