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Shang YM, Fan L, Gao SQ, Hu AJ, Yang SY. Processable PMR Poly(Pyrrolone-Imide)s Matrix Resins and their Short Carbon Fiber-Reinforced Composites. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008304038054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Processable poly(pyrrolone-imide)s (PPI) were prepared via PMR process from diethyl ester of 4,4′-(hexafluoroisopropylidene)diphthalic acid (6FDE), 3,3′, 4,4′-tetraaminodiphenyl ether (TADPE), p-phenylenediamine ( p-PDA) and monoethyl ester of cis-5-norbornene- endo-2,3-dicarboxylic acid (NE) using methyl alcohol as solvent. The homogenous PPI matrix resin solutions with 32 wt.% solid content had the low absolute viscosities in the range of 80-90 mPa s at 25 °C. The matrix resin solutions were stable for a period of > 2 months at the refrigerator temperature (4 °C) and showed good adhesion on carbon fibers. The matrix resin solutions could be thermally converted to B-stage end-capped prepolymer, which was then thermally processed to yield the fully-cured PPI. Experimental results demonstrated that the fully-cured PPI exhibited good thermal stability with glass transition temperatures of >400 °C and the thermal decomposition temperature of 525-537 °C. The onset temperatures of the DMA storage modulus curve for PPI-20 was as high as 395 °C and the storage modulus retention was 71% at 370 °C. The short carbon fiber-reinforced PPI composites (CF/PPI) were also fabricated. The CF/PPI composites showed excellent thermal stabilities and good mechanical properties, with glass transition temperature in the range of 413-421 °C and the storage modulus retention of 76-87% at 370 °C.
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Affiliation(s)
- Y. M. Shang
- State Key Laboratory of Engineering Plastics and Advanced Polymer Materials Laboratory, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100080, China
| | - L. Fan
- State Key Laboratory of Engineering Plastics and Advanced Polymer Materials Laboratory, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100080, China
| | - S. Q. Gao
- State Key Laboratory of Engineering Plastics and Advanced Polymer Materials Laboratory, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100080, China
| | - A. J. Hu
- State Key Laboratory of Engineering Plastics and Advanced Polymer Materials Laboratory, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100080, China
| | - S. Y. Yang
- State Key Laboratory of Engineering Plastics and Advanced Polymer Materials Laboratory, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100080, China,
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Yan-Feng L, Hai-Xia Y, Lin-Cheng Z, Shi-Yong Y, Jin-Gang L, Ai-Jun H, Lin F. Synthesis and Properties of PMR Matrix Resins of Poly(Pyrrolone-Benzimidazole)s. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008304036196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PMR type of poly(pyrrolone-benzimidazole) copolymers (PPBI) were synthesized by the polycondensation of monoethyl ester of cis-5-norbornene-endo-2,3-dicarboxylic acid (NE), diphenyl-isophthalate (DPIP), diethyl ester of 4,4′-oxydiphthalic acid (ODPE) and 3,3′-diaminobenzidine (DAB) or 3,3′,4,4′-tetraamindiphenyl ether(TAD) in a mixing solution of anhydrous ethyl alcohol and N -methylpyrrolidone (NMP) under different temperature and pressure procedures. The resulting resin solution showed an excellent solubility in polar organic solvents and good stability at room temperature, while the corresponding PPBI molded powder and molded plate could be prepared by undergoing amidation, imidization, cyclization and crosslinking reactions when the reaction temperature would be increased from 150 to 350°C, especially, the crosslinking structure formed by the reverse Dials-Alder reaction at 270-290°C under 2.5-3.5 MPa pressure displayed by the pressure meter. The chemical reactions and properties of the resulting PPBI molded powders and molded plates were studied by means of FT-IR, TGA, DMA methods, and the results indicate that the PPBI materials obtained hold excellent thermal stability and processability, the initial decomposition temperature > 600°C and its T g defined by the peak temperature in tan δ curve from the DMA method is 448°C (DAB) or 423°C (TAD) for PPBI-20 molded plate.
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Affiliation(s)
- Li Yan-Feng
- College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China,
| | - Yang Hai-Xia
- College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China
| | - Zhou Lin-Cheng
- College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China
| | - Yang Shi-Yong
- The State Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | - Liu Jin-Gang
- The State Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | - Hu Ai-Jun
- The State Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | - Fan Lin
- The State Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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Wang X, Li Y, Gong C, Ma T, Zhang S. Synthesis and properties of new poly(ether imides) based on pyridine-containing aromatic dianhydride and diamine monomers. J Appl Polym Sci 2009. [DOI: 10.1002/app.29928] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wang X, Li Y, Gong C, Ma T, Zhang S. Synthesis and properties of novel poly(benzimidazopyrrolone amide)s containing pyridine moieties. J Appl Polym Sci 2008. [DOI: 10.1002/app.28406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Yang HX, Li YF, Liu JG, Yang SY, Yin DX, Zhou L, Fan L. Synthesis and properties of new polymerized monomer reactants matrix resins of pyrrolone-benzimidazole copolymers containing pyridine unit. J Appl Polym Sci 2004. [DOI: 10.1002/app.13613] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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