Shanghai Daoqin Plastics Co., Ltd.

  currently, toughening agent used for ring oxygen resin toughened thermoplastic property resin main/primary has: polyether 砜(PES), polysulfone (PSU) (PSF), polyether ketone (PEK), polyether ether ketone (PEEK), polyetherimide (PEI) (PEI), polyphenylene oxide (PPO) (PPO), polymethyl methacrylate (PMMA) (PMMA), modified poly ether 砜(PES － C) and polycarbonate (PC) (PC) and other. B. Francis and other ［11］ utilizing made 侧甲基取代 polyether ether ketone (PEEKM) for DGEBA/DDS system toughened. research 发现, PEEKM add make toughened system crosslinked density reduce, obvious improve/increase system fracture tough property, 当PEEKM quality separation is 15%时, fracture tough property most large value. through analysis, as is fracture tough property increase is due to local property deformation and dispersion PEEKM pellets generate cracks 偏转, cracks and cracks 桥联效应 致.

    

     1, thermoplastic property elastomer thermoplastic property elastomer is type in normal temperature lower 显示橡胶 elastic property, in high temperature lower also can molding combined formed material. therefore, this category of polymer has and thermoplastic property plastics features, it can as is composite/compounding material toughening agent, also can as is composite/compounding material 基体材 material. this category of material main/primary polyurethane ester type, styrene type, polyolefin type, polyester type, 间规1, 2- poly butadiene type and polyamide (PA) type and other product, currently as is composite/compounding material toughening agent use relatively more is styrene type and polyolefin type.

 

     2, currently development toughening agent main/primary day is is improvement hard polyvinyl chloride (PVC) property. world upper hard polyvinyl chloride (PVC) use amount growth and toughening agent, processing modifier day development has 密切 关系. USA is 例, 1965 year polyvinyl chloride (PVC) in hard 质 占10%, 1970 year rise is 20%, to 1975 year 占40%, 1980 year ultra- 50%, expected to 2000 year will 达75%. add increase agent polyvinyl chloride (PVC) in 40℃ below/following 时就呈脆 property, but also in add relatively less toughening agent 时, not only can toughened 反而促 make its property, this is 谓 反 increase 塑效应, therefore add toughening agent hard polyvinyl chloride (PVC) has very large use value.