Shanghai Daoqin Plastics Co., Ltd.

in 由CPVC resin processing molding is formed product or semi formed product process in, “塑化” is key/critical. is extrusion molding also is injection molding parts molding, quality 直接关系 to product inner in quality and surface quality, 因而, how to from process, equipment and technology upper to good quality, is CPVC processing key/critical. below/following can 帮助我们 understanding in CPVC processing process in how to improve/increase quality: 一, CPVC separation CPVC（PVC-C） is PVC chlorine material, it is polyvinyl chloride (PVC) chlorine modified, modified rear PVC can to types different 目, is improve/increase hot type temperature degree, increase rigid property, improve/increase chemical stability property, meanwhile improve/increase weather resistance and flame resistant property, reduce density, this type of product commonly used made formed product, used for has requirements combined; is improve/increase material solvent understanding property can. this type of product chlorine ethylene, main/primary used for production bonding agent, coating material and chlorine 纶化纤. CPVC chlorine methods is water versus 悬浮（淤浆） chlorine method. it separation structure is: -CHCl-CHCl-CH2-CHCl- CPVC property can 决定于二 factors: chlorine content and chlorine in CPVC separation upper distribution. therefore same chlorine content CPVC会 due to chlorine distribution 不一样而 generate relatively large property can 差别. 二, molding processing process in improve/increase quality related elements 本文讨论CPVC extrusion molding processing. due to CPVC melt viscosity less is PVC 2倍, processing temperature degree high, in processing process in hot separation understanding generate HCL 释放而造 formed processing molding difficult and equipment 腐蚀. in extrusion process in, how to make CPVC this type of high viscosity material to 理想 “塑化”（塑化 to 位） is CPVC processing technology key/critical. therefore, it for formulation has requirements: a heat stabilized agent requirements due to CPVC processing temperature degree high, formulation in for heat stabilized agent use amount ratio PVC high many, 显然, use 传统 三 salt, salt heat stabilized agent is combined. currently relatively is formed heat stabilized agent is tool has lubricated system composite/compounding series stabilizer. b for lubricant requirements due to CPVC melt viscosity very high, especially is in injection molding parts molding easy melt 破裂, therefore use 传统 石 wax, hard acid and metal type lubricated system is combined 适. in CPVC extrusion processing in, due to CPVC存 in types toward viscous in hot rear processing equipment （ especially is machine and injection molding parts mold ） metal surface, is remove this type of viscous 附, must in formulation in add outer lubricant. outer lubricant and CPVC resin is versus solvent. in CPVC molding processing in （ especially is injection processing ）, in pressure function lower, CPVC resin versus scratch generate scratch hot, scratch hot generate for molding processing is 不利, must to control. inner lubricant can decrease/reduce CPVC in processing process in resin 间 摩 scratch. inner lubricant and CPVC resin is versus solvent. 应当指出, formulation in inner outer lubricated balanced is key/critical. inner lubricated amount heavy effect/influence “塑化”, make products quality bad; outer lubricated amount formed lubricant 析出, 甚至会 generate screw slip and other heavy effect/influence positive production phenomenon. wax in OP wax （褐煤 ester wax ） is inner outer composite/compounding type lubricant. c processing additives for improve/increase quality function in CPVC extrusion and injection molding parts molding processing in, must use processing additives, its is improve/increase quality and increase CPVC材 material low temperature impact resistant property and products tough property. 就CPVC而言, make in viscous temperature degree lower （如195～205℃）, it flow mono still is grade pellets, resin micro fine pellets versus function 差, hot function 差, easy generate melt 破裂, quality 差. ACR is types promote processing additives, it can in CPVC melt in dispersion is dimensions small 于0．01μm structure mono 元,并 uniform distribution 于CPVC micro fine pellets 间, in force function lower increase large CPVC pellets 间 摩 scratch force, promote melt system hot 传质, increase 扭矩, add fast process, improve/increase quality. due to CPVC products low temperature property relatively large, impact resistant property 差, has through formulation and process adjustment, can increase CPVC products tough property, improve/increase its impact resistant property. China plastics processing 网