CIESC Journal ›› 2014, Vol. 65 ›› Issue (10): 4168-4175.doi: 10.3969/j.issn.0438-1157.2014.10.055

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Synthesis and characterization of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene)

WANG Qiang, YANG Jianhui, YUAN Qiaolong, HUANG Farong, DU Lei   

  1. Key Laboratory for Specially Functional Polymeric Materials and Related Technology of Ministry of Education (East China University of Science and Technology), Shanghai 200237, China
  • Received:2014-03-10 Revised:2014-05-09 Online:2014-10-05 Published:2014-05-21
  • Supported by:

    supported by Shanghai Leading Academic Discipline Project(B502).

Abstract: A series of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene) (SiO-b-PSA) were synthesized by the condensation reactions of m-diethynylbenzene magnesium reagents with various a,w-bis(chloro)dimethylsiloxanes. Carbon fiber reinforced composites were prepared through compression molding. The structures and properties of the resins and composites were characterized by FT-IR, 1H NMR, GPC, DSC, TGA and mechanical tests. The copolymers had good heat resistance and toughness. The copolymers also showed excellent processability that could be cured at below 200℃. The cured resins possessed high thermal and thermooxidative stability. Their thermo-decomposition occurred at above 513℃ in N2. Impact strength of the composites arrived at as high as(30.92±0.44) kg·m-2.

Key words: Si-containing arylacetylene resin, siloxane-arylacetylene resin, block copolymer, high temperature polymer, composites, polymerization, chemical reaction

CLC Number: 

  • TQ323.1
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