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.
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**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性能:PBT树脂为结晶形,熔点230℃左右,相对密度1.35;具有优良的力学性能,有自润滑性和耐磨性,摩擦系数低,耐热、耐候好;但缺口敏感性大;尺寸稳定性好,电性能优良,耐电弧性好;抗化学药品性及其优异,与醇、醚、脂肪烃、酸和盐的水溶液等不起作用,但不耐强酸和强碱。耐,在二中溶胀,在芳烃、中有些溶胀。在改性PBT中,有92%是用玻璃纤维增强的,经过增强改性的PBT性能**:①耐热性优良,长期使用温度125℃,短期使用温度达210℃;②机械强度高,在长时间高负荷下变形小;③吸水率低,尺寸稳定性好,耐摩擦磨耗性优良。
产品系列
非增强PBT、玻纤增强PBT、阻燃PBT、矿物填充PBT、玻矿混合PBT、耐高温PBT、玻纤*PBT、耐水解PBT、润滑剂添加PBT、热稳定剂添加PBT、耐紫外线PBT、食品级PBT、导热级PBT、高流动系列PBT
PBT被广泛用于电子电器领域应用占PBT的总生产量的百分之五十:电脑/电器接插件、接触器、线圈骨架、连接器、继电器、熔断器、调节器、温控开关、温控保护器、装饰灯座、开关插座、电磁炉底盘、电暖器出风口、散热扇翼、变压器线圈骨架、高电压大电流的高压断路开关骨架、电脑风扇、节能灯灯头、电器开关、电子镇流器外壳、电吹风、电烤箱、电饭煲、微波炉、水泵配件及电动工具配件等;PBT汽车领域的应用占PBT的总生产量的百分之三十:主要用于高压无触点点火器的分电器盖、转子、点火线圈盖、接线端子、传感器盒、前后灯座、集成电路盒、微电机后盖、冷气风扇等,PBT通讯领域应用占PBT的总生产量的百分之二十,主要用于程控电话的集成模块、接线板、电容器外壳、天线护套等.
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