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Wang C, Feng Y, Zhang C, Zhang T, Chi Q, Chen Q, Lei Q. High heat‐resistant (250°C) epoxy resin composites with excellent dielectric properties. J Appl Polym Sci 2022. [DOI: 10.1002/app.52963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chunbiao Wang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education Harbin University of Science and Technology Harbin People's Republic of China
- School of Electrical and Electronic Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Yu Feng
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education Harbin University of Science and Technology Harbin People's Republic of China
- School of Electrical and Electronic Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Changhai Zhang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education Harbin University of Science and Technology Harbin People's Republic of China
- School of Electrical and Electronic Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Tiandong Zhang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education Harbin University of Science and Technology Harbin People's Republic of China
- School of Electrical and Electronic Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Qingguo Chi
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education Harbin University of Science and Technology Harbin People's Republic of China
- School of Electrical and Electronic Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Qingguo Chen
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education Harbin University of Science and Technology Harbin People's Republic of China
- School of Electrical and Electronic Engineering Harbin University of Science and Technology Harbin People's Republic of China
| | - Qingquan Lei
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education Harbin University of Science and Technology Harbin People's Republic of China
- School of Electrical and Electronic Engineering Harbin University of Science and Technology Harbin People's Republic of China
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Li CP, Chuang CM. Thermal and Dielectric Properties of Cyanate Ester Cured Main Chain Rigid-Rod Epoxy Resin. Polymers (Basel) 2021; 13:polym13172917. [PMID: 34502957 PMCID: PMC8433681 DOI: 10.3390/polym13172917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/26/2021] [Accepted: 08/28/2021] [Indexed: 02/07/2023] Open
Abstract
Thermal and dielectric properties of rigid-rod bifunctional epoxy resin 4,4-bis(2,3-epoxypropoxy) biphenyl epoxy (BP) and commercial epoxy resin diglycidyl ether of bisphenol A (DGEBA) were studied using differential scanning calorimeter (DSC), thermogravimetric analyzer (TGA), dynamic mechanical analyzer (DMA), thermal mechanical analyzer (TMA) and dielectric analyzer (DEA). These two epoxies were cured with cyanate ester hardener 2,2'-bis(4-cyanatophenyl) propane (AroCy B10). The BP/B10 system consisting of a rigid-rod structure exhibited better thermal properties than the DGEBA/B10 system with a flexible structure. Anisotropic BP/B10 (2:1) had the highest 5% weight loss temperature, the highest amount of residue and a smaller thermal expansion coefficient than the commercial DGEBA/B10 system. The BP/B10 system, which cured at the LC phase temperature, had higher Tg than the commercial DGEBA/B10 system, as found from dynamic mechanical analysis. The BP/B10 system also demonstrated better dielectric properties than the commercial DGEBA/B10 system when enough curing agent was provided.
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Affiliation(s)
- Chi-Ping Li
- Department of Chemical Engineering, National United University, Miaoli 36063, Taiwan
- Correspondence:
| | - Chih-Min Chuang
- Institute of Nuclear Energy Research, Longtan, Taoyaun 32546, Taiwan;
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Chen CH, Jian JY, Yen FS. Morphology, thermal, and mechanical properties of κ-aluminum oxide/CTBN/epoxy nanocomposites. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03306-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Li J, Ren C, Sun Z, Ren Y, Lee H, Moon KS, Wong CP. Melt Processable Novolac Cyanate Ester/Biphenyl Epoxy Copolymer Series with Ultrahigh Glass-Transition Temperature. ACS APPLIED MATERIALS & INTERFACES 2021; 13:15551-15562. [PMID: 33755416 DOI: 10.1021/acsami.0c20537] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The rapid progress in silicon carbide (SiC)-based technology for high-power applications expects an increasing operation temperature (up to 250 °C) and awaits reliable packaging materials to unleash their full power. Epoxy-based encapsulant materials failed to provide satisfactory protection under such high temperatures due to the intrinsic weakness of epoxy resins, despite their unmatched good adhesion and processability. Herein, we report a series of copolymers made by melt blending novolac cyanate ester and tetramethylbiphenyl epoxy (NCE/EP) that have demonstrated much superior high-temperature stability over current epoxies. Benefited from the aromatic, rigid backbone and the highly functional nature of the monomers, the highest values achieved for the copolymers are as follows: glass-transition temperature (Tg) above 300 °C, decomposition onset above 400 °C, and char yield above 45% at 800 °C, which are among the highest of the known epoxy chemistry by far. Moreover, the high-temperature aging (250 °C) experiments showed much reduced mass loss of these copolymers compared to the traditional high-temperature epoxy and even the pure NCE in the long term by suppressing hydrolysis degradation mechanisms. The copolymer composition, i.e., NCE to EP ratio, has found to have profound impacts on the resin flowability, thermomechanical properties, moisture absorption, and dielectric properties, which are discussed in this paper with in-depth analysis on their structure-property relationships. The outstanding high-temperature stability, preferred and adjustable processability, and the dielectric properties of the reported NCE/EP copolymers will greatly stimulate further research to formulating robust epoxy molding compounds (EMCs) or underfill for packaging next-generation high-power electronics.
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Affiliation(s)
- Jiaxiong Li
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Chao Ren
- School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Zhijian Sun
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yanjuan Ren
- Department of Materials Science and Engineering, CAPT/HEDPS/LTCS, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Engineering, Peking University, Beijing 100871, China
| | - Haksun Lee
- School of Electrical and Computing Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kyoung-Sik Moon
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ching-Ping Wong
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Salunke A, Sasidharan S, Cherukattu Gopinathapanicker J, Kandasubramanian B, Anand A. Cyanate Ester—Epoxy Blends for Structural and Functional Composites. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05008] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Akshaykumar Salunke
- Composites Research Center, Research and Development Establishment (Engineers), DRDO, Ministry of Defence, Pune, 411015, India
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Pune, 411025, India
| | - Sarath Sasidharan
- Composites Research Center, Research and Development Establishment (Engineers), DRDO, Ministry of Defence, Pune, 411015, India
- School of Materials Science and Engineering, National Institute of Technology, Calicut, 673601, India
| | - Jayalakshmi Cherukattu Gopinathapanicker
- Composites Research Center, Research and Development Establishment (Engineers), DRDO, Ministry of Defence, Pune, 411015, India
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Pune, 411025, India
| | - Balasubramanian Kandasubramanian
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Pune, 411025, India
| | - Anoop Anand
- Composites Research Center, Research and Development Establishment (Engineers), DRDO, Ministry of Defence, Pune, 411015, India
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Intrinsically noncombustible polymers without flame retardant additives: Sulfur-containing and bio-based benzoxazines. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109770] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li J, Ren C, An D, Ren Y, Moon KS, Wong CP. Systematic evaluation of cyanate ester/ epoxidized cresol novolac copolymer resin system for high temperature power electronic packaging applications. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122454] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Highly thermally stable mesoporous Poly(cyanate ester) featuring double-decker–shaped polyhedral silsesquioxane framework. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121940] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Deng H, Yuan L, Gu A, Liang G. Facile strategy and mechanism of greatly toughening epoxy resin using polyethersulfone through controlling phase separation with microwave‐assisted thermal curing technique. J Appl Polym Sci 2019. [DOI: 10.1002/app.48394] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Huiyuan Deng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Li Yuan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Aijuan Gu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Guozheng Liang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
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Gouthaman S, Madhu V, Kanemoto SO, Madurai SL, Hamerton I. Examining the thermal degradation behaviour of a series of cyanate ester homopolymers. POLYM INT 2019. [DOI: 10.1002/pi.5886] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Siddan Gouthaman
- Polymer Science and Technology DivisionCentral Leather Research Institute (CSIR – CLRI) Chennai India
| | - Venkatesh Madhu
- Polymer Science and Technology DivisionCentral Leather Research Institute (CSIR – CLRI) Chennai India
| | - Stanley Olivier Kanemoto
- Polymer Science and Technology DivisionCentral Leather Research Institute (CSIR – CLRI) Chennai India
- Macromolecular Research Team, Department of Inorganic ChemistryUniversity of Yaounde‐I Yaounde Cameroon
| | - Suguna Lakshmi Madurai
- Polymer Science and Technology DivisionCentral Leather Research Institute (CSIR – CLRI) Chennai India
| | - Ian Hamerton
- Bristol Composites Institute (ACCIS), Department of Aerospace Engineering, School of Civil, Aerospace, and Mechanical EngineeringQueen's Building, University of Bristol, University Walk Bristol UK
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