巴斯夫集团在欧洲、、南北美洲的41个国家拥有**过160家全资子公司或者合资公司。公司总部位于莱茵河畔的路德维希港,它是世界上工厂面积的化学产品基地。
BASF Group has more than 160 wholly owned subsidiaries or joint ventures in 41 countries in Europe, Asia, North and South America. Headquartered in Ludwig harbour on the Rhine River, the company is the largest chemical product base with factory area in the world.
It is characterized by good acid resistance, good salt resistance, high temperature resistance to water and salt, high temperature resistance to water and salt, good resistance to water and salt, good resistance to water and salt, good resistance to water and salt Use, but not resistant to strong acid and alkali. It is resistant to carbon tetrachloride, and swells in dichloroethane, some in aromatic hydrocarbon and acetic acid. Among the modified PBT, 92% is reinforced by glass fiber, and the properties of the modified PBT are outstanding: ① excellent heat resistance, long-term service temperature of 125 ℃, short-term service temperature of 210 ℃; ② high mechanical strength, small deformation under long-term high load; ③ low water absorption, good dimensional stability and excellent friction and wear resistance
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、乙酸中有些溶胀。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。
Overview of PBT development: in the early 1970s, PBT was successfully researched by Celanese company of the United States, and was listed under the trade name of celanex. Subsequently, world famous manufacturers such as BASF, Bayer, Ge, Ticona of the United States, Toray and Mitsubishi Chemical of Japan, new optical fiber of Taiwan, Changchun artificial resin and South Asia plastic materials were successively put into production. There were more than 30 global manufacturers. PBT can also be called thermoplastic polyester plastics. In order to be suitable for different processing industries, additives are usually added or mixed with other plastics. With the different proportion of additives, different specifications of products can be manufactured. At present, there are more than 100 specifications in the island, so PBT is a product with less quantity and more specifications.
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.
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