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Guo C, Peng Q, Wei H, Liu J, Hu X, Peng J, Ma J, Ye X, Yang J. Phosphorus-Containing Flame-Retardant Benzocyclobutylene Composites with High Thermal Stability and Low CTE. ACS OMEGA 2023; 8:9464-9474. [PMID: 36936317 PMCID: PMC10018689 DOI: 10.1021/acsomega.2c08159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
As a component of printed circuit substrate, copper clad laminate (CCL) needs to meet the performance requirements of heat resistance, flame retardancy, and low coefficient of thermal expansion (CTE), which, respectively, affects the stability, safety, and processability of terminal electronic products. In this paper, benzocyclobutylene (BCB)-functionalized phosphorus-oxygen flame retardant composites were prepared through introducing the BCB groups, and the performance was researched by thermogravimetric analysis, microcombustion calorimetry, and thermomechanical analysis. The research results show that these phosphorus oxide compounds containing BCB groups show good thermal stability and low total heat release (THR) after thermal curing, and the more BCB groups on the phosphorus oxide monomers, the better the thermal stability and flame retardancy of cured resins. The Td5 and THR of the composite (M3) are as high as 443 °C and 23.1 kJ/g, respectively. In addition, the CTE of M3 is as low as 16.71 ppm/°C. Introduction of BCB groups which can be crosslinked through heat to improve the thermal stability, flame retardancy, and reduced CTE of traditional organophosphorus flame retardant materials. These materials are expected to be good candidates for CCL substrates for electronic circuits.
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Affiliation(s)
- Chao Guo
- School
of Materials and Chemistry, Southwest University
of Science and Technology, Mianyang 621010, China
- State
Key Laboratory of Environmentally-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
| | - Qiuxia Peng
- School
of Materials Science and Engineering, Sichuan
University of Science & Engineering, Zigong 643000, China
| | - Hubo Wei
- School
of Materials and Chemistry, Southwest University
of Science and Technology, Mianyang 621010, China
- State
Key Laboratory of Environmentally-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
| | - Jiaying Liu
- School
of Materials and Chemistry, Southwest University
of Science and Technology, Mianyang 621010, China
- State
Key Laboratory of Environmentally-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xinyu Hu
- School
of Materials and Chemistry, Southwest University
of Science and Technology, Mianyang 621010, China
- State
Key Laboratory of Environmentally-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
| | - Juan Peng
- School
of Materials and Chemistry, Southwest University
of Science and Technology, Mianyang 621010, China
- State
Key Laboratory of Environmentally-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
| | - Jiajun Ma
- School
of Materials and Chemistry, Southwest University
of Science and Technology, Mianyang 621010, China
- State
Key Laboratory of Environmentally-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xu Ye
- School
of Materials and Chemistry, Southwest University
of Science and Technology, Mianyang 621010, China
- School
of Continuing Education, Southwest University
of Science and Technology, Mianyang 621010, China
| | - Junxiao Yang
- School
of Materials and Chemistry, Southwest University
of Science and Technology, Mianyang 621010, China
- State
Key Laboratory of Environmentally-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
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Shuai C, Shuai C, Feng P, Yang Y, Xu Y, Qin T, Yang S, Gao C, Peng S. Silane Modified Diopside for Improved Interfacial Adhesion and Bioactivity of Composite Scaffolds. Molecules 2017; 22:E511. [PMID: 28333113 PMCID: PMC6153932 DOI: 10.3390/molecules22040511] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/18/2017] [Accepted: 03/21/2017] [Indexed: 12/21/2022] Open
Abstract
Diopside (DIOP) was introduced into polyetheretherketone/polyglycolicacid (PEEK/PGA) scaffolds fabricated via selective laser sintering to improve bioactivity. The DIOP surface was then modified using a silane coupling agent, 3-glycidoxypropyltrimethoxysilane (KH570), to reinforce interfacial adhesion. The results showed that the tensile properties and thermal stability of the scaffolds were significantly enhanced. It could be explained that, on the one hand, the hydrophilic group of KH570 formed an organic covalent bond with the hydroxy group on DIOP surface. On the other hand, there existed relatively high compatibility between its hydrophobic group and the biopolymer matrix. Thus, the ameliorated interface interaction led to a homogeneous state of DIOP dispersion in the matrix. More importantly, an in vitro bioactivity study demonstrated that the scaffolds with KH570-modified DIOP (KDIOP) exhibited the capability of forming a layer of apatite. In addition, cell culture experiments revealed that they had good biocompatibility compared to the scaffolds without KDIOP. It indicated that the scaffolds with KDIOP possess potential application in tissue engineering.
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Affiliation(s)
- Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
- The State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha 410008, China.
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Chenying Shuai
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
- The State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
| | - Youwen Yang
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Yong Xu
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Tian Qin
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Sheng Yang
- Human Reproduction Center, Shenzhen Hospital of Hongkong University, Shenzhen 518053, China.
| | - Chengde Gao
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
- The State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
| | - Shuping Peng
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha 410008, China.
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha 410078, China.
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Kim SK, Liu T, Wang X. Flexible, Highly Durable, and Thermally Stable SWCNT/Polyimide Transparent Electrodes. ACS APPLIED MATERIALS & INTERFACES 2015; 7:20865-20874. [PMID: 26323087 DOI: 10.1021/acsami.5b06181] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Flexible, transparent, and electrically conducting electrode materials are highly desired for flexible electronic applications. With a highly transparent polyimide (PI) as a substrate, a comprehensive and comparative study was performed to investigate four different fabrication schemes in producing transparent and electrically conducting SWCNT/PI electrodes. A very promising method that involves an in situ imidization process and nitric acid doping treatment was identified, which led to the fabrication of highly durable and thermally stable SWCNT/PI electrodes. The best performed electrode has a transmission of 77.6% at 550 nm and a sheet resistance (Rs) of 1169 ± 172 Ω/□, which appeared no changes after repeating tests of bending, folding-unfolding, adhesive-tape-peeling-off, and wet tissue-paper scratching/wiping. The excellent thermal stability of such fabricated SWCNT/PI electrode is manifested by the very high glass transition temperature of 290.1 °C and low coefficient of thermal expansion (CTE) of 28.5 ppm °C(-1) in the temperature range from 75 to 200 °C. The new method expects to be able to pave the way in facile production of high-performance flexible, transparent, and conducting electrodes.
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Affiliation(s)
- Seong-Ku Kim
- Department of Chemical Engineering, Laboratory of Advanced Materials (MOE), Tsinghua University , Beijing 100084, P. R. China
| | - Tao Liu
- High-Performance Materials Institute, Florida State University , 2005 Levy Avenue, Tallahassee, Florida 32310, United States
| | - Xiaogong Wang
- Department of Chemical Engineering, Laboratory of Advanced Materials (MOE), Tsinghua University , Beijing 100084, P. R. China
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Kim S, Ando S, Wang X. Ternary composites of linear and hyperbranched polyimides with nanoscale silica for low dielectric constant, high transparency, and high thermal stability. RSC Adv 2015. [DOI: 10.1039/c5ra05227k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
A new series of ternary polyimide–silica composites was developed to obtain polymer films with low dielectric constant, high optical transparency, and good thermal stability.
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Affiliation(s)
- Seongku Kim
- Department of Chemical Engineering
- Laboratory of Advanced Materials (MOE)
- Tsinghua University
- Beijing
- P. R. China
| | - Shinji Ando
- Department of Chemistry & Materials Science
- Tokyo Institute of Technology
- Meguro-ku
- Japan
| | - Xiaogong Wang
- Department of Chemical Engineering
- Laboratory of Advanced Materials (MOE)
- Tsinghua University
- Beijing
- P. R. China
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Kim S, Ando S, Wang X. Highly dispersible ternary composites with high transparency and ultra low dielectric constants based on hyperbranched polyimide with organosilane termini and cross-linked polyimide with silica. RSC Adv 2015. [DOI: 10.1039/c5ra20722c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Flexible insulating materials that are both thermally and mechanically stable, highly transparent, and have low dielectric constants are highly desirable for electronic applications.
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Affiliation(s)
- Seongku Kim
- Department of Chemical Engineering
- Laboratory of Advanced Materials (MOE)
- Tsinghua University
- Beijing
- P. R. China
| | - Shinji Ando
- Department of Chemistry & Materials Science
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Xiaogong Wang
- Department of Chemical Engineering
- Laboratory of Advanced Materials (MOE)
- Tsinghua University
- Beijing
- P. R. China
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