Shanghai Daoqin Plastics Co., Ltd.

  polyphenylene oxide (PPO) structure mono 元 
is world large general purpose engineering plastics 之一. it tool has rigid property large, heat resistant property high, flame resistant, strong/high degree relatively high electrical property can excellent and other advantages. another, polyphenylene oxide (PPO) also tool has wear resistant, 无毒, resistant and other advantages. PPO dielectric constant and dielectric loss in engineering plastics in is most small product types 之一, 几乎不受 temperature degree , wet degree effect/influence, can used for low, in, high frequency electrical field/area. PPO negative deformation temperature degree can 达 190℃ above, temperature degree is -170℃.   PPO材 material as is world large general purpose engineering plastics 之一, 无毒, versus for density small, （PPO/PA同 type product is 1.10-1.13g/cm3）, is large general purpose engineering plastics in density most small, tool has good machine 械 strong/high degree, resistant creep property, resistant force 松弛, resistant fatigue strong/high degree high.   PPO property can:  
1, is white pellets. comprehensive property can good, can in 120 degree in use, electrical insulation property good, water small, has force cracking toward. modified polyphenylene oxide (PPO) can remove force cracking.   
2, has electrical insulation property and resistant water property excellent, dimensional stability good. its electrical property can plastics 首位.   3, MPPO is PPO and HIPS blending made modified material, currently upper material is types material.   
4, has relatively high heat resistant property, 玻璃化 temperature degree 211 degree, melting point 268 degree, add hot 至330 degree has separation understanding toward, PPO content high its heat resistant property good, heat deflection temperature (HDT) can 达190 degree.   
5, flame retardant property good, tool has property, and HIPS mixed combined rear tool has in and other can property. light, can used for food and material industry . resistant light property 差, long time in cationic light lower use color.   
6, can and ABS,HDPE,PPS,PA,HIPS, glass fiber and other blending modified 处理.   PPO applications:  
1, made as heat resistant parts, insulation parts, decrease abrasion wear resistant parts, parts, medical and electronics parts.   2, can as relatively high temperature degree lower use gears, 风叶, and other parts, can 代替不锈钢 use.   3, can made as filament, solid parts and parts.   
4, electrical machine, 转子, machine housing/shell, pressure device electrical appliances parts.   PPO molding property can:  
1. non crystallization material,吸 wet small.   
2. flow property 差, is similar 牛顿流体, viscosity for temperature degree comparison 敏感, products thick degree generally in 0.8 mm above. easy separation understanding, separation understanding generate gas 体. 宜严格 control molding temperature degree, mold 应 add hot, system for material retardant force small.   3, polyphenylene oxide (PPO) water absorption very low 0.06% left right, micro amount water separation 会导致 product surface silver streaks and other light slip phenomenon, most good is as drying 处理, temperature degree can high 出150 degree, color 会变化.   
4, polyphenylene oxide (PPO) molding temperature degree is 280-330 degree, modified polyphenylene oxide (PPO) molding temperature degree is 260-285 degree.  

PPO modified basic Knowledge  
未经 modified polyphenylene oxide (PPO) （PPO） resin tool has good force property can, electrical property can, heat resistant property, flame retardant property and chemical stability property and other, is it resistant solvent agent property 差, products easy 发生应 force cracking, notched impact strength low, another it in 一 致命 low 点—— melt viscosity high, processing molding property 极差, pure PPO resin can using/adopting injection methods molding, this large large made it application.   
is this disadvantages, or its new property can, for PPO进行 multiple modified. its methods has chemical （ copolymer, 嵌段, grafting and and other ） and material 理（ blending, filling, reinforcement and micro foaming and other ） modified types.    chemical modified main/primary 包括:  
（1） for PPO structure modified, use bromine 化, acid ester 化, 磺酰化, 羧基化 and other improve/increase PPO solvent understanding property and gas property used for film material, or is 赋予PPO flame retardant property used for flame retardant material;   （2） PPO or and belt/tape can small separation 子进行 reaction, 赋予PPO一定 极 property and reaction active property, used for PPO alloy increase agent;   
（3） PPO and other polymer/macromolecule or small separation through or grafting copolymer obtain new material or used as PPO alloy increase agent; polyphenylene oxide (PPO) material modified in research most is active is   PPO alloy 化, main/primary 包括:  
（1） utilizing PPO and polystyrene (PS) （PS） in wide formed scope/range inner versus property and various belt/tape styrene mono polymer blending made 备PPO/PS type alloy, generation PPO alloy;   
（2） through and its it engineering plastics, 如 polyamide (PA) （PA）, polyethylene terephthalate (PET) （PET）, polybutylene terephthalate (PBT) (PBT), polyphenylene sulfide (PPS) （PPS） and other blending made high property can PPO alloy, second generation PPO alloy.   
按组 separation versus property will polyphenylene oxide (PPO) alloy classification  
another, can separation versus property will polyphenylene oxide (PPO) alloy separation is:   （1） versus system, main/primary is 指PPO/PS;   
（2） non versus system, 包括PPO/PA, PPO/PBT, PPO/PET, PPO/ PTFE （PTFE）, PPO/ polyolefin （PO） and other;   
（3）部 separation versus system, 包括PPO/ polycarbonate (PC) （PC）, PPO/PPS,PPO/ styrene - butadiene - styrene copolymer （SBS）,PPO/ acrylonitrile-butadiene-styrene (ABS) copolymer （ABS）, PPO/ polymethyl methacrylate (PMMA) （PMMA）, PPO/ styrene - acrylonitrile copolymer （SAN） and other.