BASF is headquartered in Ludwigshafen, with more than 350 branches and companies in 39 countries. Among them, there are more than 60 domestic manufacturers in Germany, respectively located in Ludwigshafen, Minster, Hamburg, Stuttgart, Mannheim, welzburg, Cologne and other cities. BASF Group headquarters and BASF joint stock company in Ludwigshafen are like a "small city", covering an area of 7 square kilometers.
Types of PBT: 10% glass fiber reinforced, 20% glass fiber reinforced, 30% glass fiber reinforced, flame retardant, mineral filling, glass mineral mixing, high temperature resistance, glass fiber fire resistance, hydrolysis resistance, lubricant addition, heat stabilizer addition, ultraviolet resistance, food grade, thermal conductivity level, high flow.
PBT加工之前必须要行干燥处理、要将水分含量控制在0.03%以下。
PBT采用热风循环干燥时,PBT当温度为110℃、115℃或145℃时,所对应的时间不**过六小时。料层厚度低于32mm。
PBT温度:PBT的分解温度为285℃,所以实际生产中控制在235-265℃:
PBT压力压力为52~102MPa。
PBT速率 PBT冷却速度快,因此要采用较快的速率。
螺杆转速和背压成型PBT的螺杆转速不宜**过80r/min,在25~62r/min之间。
背压为压力的12%~17%。PBT模具温度在65~82℃,各部位的温度差不**过12℃。PBT成型时间一般情况下为18~62s。
The development of PBT: PBT was first developed by German scientist P. Schlick in 1942. Then Celanese company (now Ticona) in the United States carried out industrial development and listed under the trade name of celanex. In 1970, it was put on the market with 30% glass fiber reinforced plastic, the trade name was x-917, and later changed to celanex. In 1971, Eastman company launched a glass fiber reinforced chain and non reinforced products, trade name tenite (ptmt); in the same year, GE company also developed similar products, with three varieties of non reinforced, reinforced and self extinguishing. Subsequently, world famous manufacturers such as BASF, Bayer of Germany, GE and Ticona of the United States, Toray of Japan, Mitsubishi Chemical of Japan, new optical fiber of Taiwan, Changchun artificial resin, South Asia plastics and other companies successively put into production. There are more than 30 global manufacturers.
PBT的发展历程:PBT早是德国科学家P.Schlack于1942年研制而成,之后美国Celanese公司(现为Ticona)进行工业开发,并以Celanex商品名上市,于1970年以30%玻璃纤维增强塑料投放市场,商品名为X-917,后改为CELANEX。1971年Eastman公司推出了有玻璃纤增强琏和不增强的产品,商品名Tenite(PTMT);同年GE公司也开发出同类产品,有不增强、增强和自熄性的三个品种。随后世界厂商德国BASF、Bayer、美国GE、Ticona,日本Toray、三菱化学,闽台新光合纤、长春人造树脂、南亚塑料等公司先后投入生产行列,**生产厂商共计三十余家。
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