Shanghai Daoqin Plastics Co., Ltd.

 PBT most is Germany 科学家P.Schlack于1942 year made formed, rear USA Celanese company （现 is Ticona）进行 industrial development, 并以Celanex商 product upper 市, 于1970 year 以30% glass fiber reinforcement plastics market, product is X-917, rear is CELANEX. 1971 year Eastman company launch has 玻璃纤 reinforcement and reinforcement product, product 名Tenite(PTMT）; year GE company development type product, has reinforcement, reinforcement and self-extinguishing property product types. rear world 知名厂商 Germany BASF, Bayer, USA GE, Ticona, Japan Toray, Mitsubishi chemical, Taiwan new light combined 纤, long 春人造 resin, plastics and other company rear production 行列, full production 厂商共计三十余家.

一, polybutylene terephthalate (PBT) （PBT） overview
polybutylene terephthalate (PBT) （Polybutylene terephthalate）, also terephthalic acid 四次甲基 ester. 简称PBT. it is for 苯二甲 acid and 1,4- butanediol polycondensation material. PBT and PET一起 by is thermoplastic polyester.
二, polybutylene terephthalate (PBT) （PBT） features and application

　　2, PBT application （ usually modified product types ）;
a, electronics electrical appliances: connectors, parts, use electrical appliances, parts parts, small type electrical cover/cap or （ heat resistant property, flame retardant property, electrical insulation property, molding processing property ）;
b, automotive:
1, outer parts: main/primary has 转角格珊, machine hot and other;
2, internal parts: main/primary has inner strip/profile, water device and control system 阀;
3, automotive electrical appliances parts: automotive 点火线圈绞 tube/pipe and various electrical appliances connectors and other.
（PBT used for automotive upper also and nylon, poly carbon and polyoxymethylene (POM), low warpage property PBT 出现, in the future will in automotive parts upper to more more application ）
c, machine equipment: frequency magnetic belt/tape machine belt/tape 式传动轴, electronics machine 罩, water lamp covers, electrical 熨斗罩, machine parts and a large amount of gears, 凸轮, 按钮, electronics table/sheet outer housing/shell, versus machine parts （ has heat resistant, flame retardant requirements ）

三, PBT plastics bonding:
according to different need, can selection below/following bonding agent:
1. TG-3200: mono separation normal temperature solid soft elastic property anti bonding agent, resistant high low temperature, bonding speed degree slow, water usually need 1天 or time can solid 化完毕.
2. TS-8602瞬间 bonding agent, can 数秒钟 or 数十秒钟 fast speed bonding PBT, 但胶层 hard 脆, resistant water.
3. TE-9270 type, di separation 胶, soft/flexible, combined PBT large bonding or composite/compounding. high temperature resistance property can relatively 差.
4.TE-9249 type 胶: di separation 胶, high temperature resistance.

5.sili-1706: mono room temperature 硫化胶, solid rear is elastomer tool has excellent anti water, anti bonding agent, resistant high low temperature, 1-2mm thick degree 话, 5-6 small basic solid 化, has strong/high degree. full solid 化 话 need less 24 small 时. mono 组份, need mixed combined, extrusion rear coating 抹静置即 can, add temperature.
PBT process features
PBT injection molding front need in 110～120℃ temperature degree lower drying 3 small left right, molding processing temperature degree is 250～270℃, mold temperature control in 50～75℃ is 宜. material from melt 状态一经 cooling, 则会立即凝 solid crystallization, its cooling time relatively short; nozzle temperature degree control 不当（偏 low ）, runner （ water 口） easy cooling solid 化, 会出现堵嘴 phenomenon. material temperature degree ultra- 275℃ or material in material in time ultra- 30 separation 钟, easy 引起材 material separation understanding 变脆. PBT injection molding use relatively large water 口进胶, use hot runner system, mold gas need good, use “ high speed, in pressure, in temperature ” conditions molding processing, anti material or add glass fiber (GF) PBT water material again recycling utilizing, machine use PE or PP material and 时清洗 material tube/pipe, carbon 化.

　PBT processing conditions:

PBT mold made as: