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PC Basic Description:
PC can be divided into aliphatic, alicyclic, aromatic and aliphatic aromatic groups. As one of the five engineering plastics, polycarbonate mainly refers to bisphenol a polycarbonate. PC is a kind of thermoplastic engineering plastics with excellent comprehensive properties. It can be used to manufacture parts such as machinery, automobile and precision instrument. It can also be used in electronic components and electric tool parts. However, the processing and molding requirements of PC are high, and it has no self-lubricating property, so it is not suitable for manufacturing products with metal inserts. Due to its non-toxic, good chemical resistance and excellent food hygiene performance, PC can be widely used in daily life. In particular, its tranrency is superior to other engineering plastics, so it is widely used in aviation glass, lamps, safety glass, office equipment, laser disc and other fields. It can be said that in all areas of the national economy, PC has been widely used, and is still expanding.
PC开发生产工艺介绍
PC的工业合成主要是以双酚为原料,、氢氧化钠和二氯甲烷为原料和反应助剂的界面路线。工艺成熟,产品质量高,规模化、连续化生产容易,经济性好。因此,近几年来国内主要的聚碳酸酯生产线都占据了主导地位。年,日本塑料公司成功地研究了非工艺,实现了工业化生产。该工艺主要以双酚和碳酸二苯酯为原料,是一种符合环保要求的绿色工艺,已成为未来聚碳酸酯合成工艺的发展方向,预计未来聚碳酸酯生产将逐步占据主导地位
PC属中等耐磨材料( 但比金属还是要好很多)。比尼龙、聚、氯化聚醚及PTFE差,但比ABS、聚砜、有机玻璃等好。在PC中加入某些填料可改善耐磨性,例如加入PTFE、玻纤等可降低摩擦系数和磨损量,提高PV值。PC的耐热性和耐寒性都很好,长期使用温度的范围较宽,可在-100~130℃范围使用,其负荷变形温度高(130~140℃),且受负荷影响小;脆化温度在-100℃以下,甚至在-180℃的低温下,也不会象玻璃那样破碎。PC没有明显的熔点,在220~230℃呈熔融状态。由于大分子链刚性大,其熔融粘度比其它热塑性塑料高得多.
PC is a kind of weak polar polymer. Although the electrical insulation of PC is not as good as that of polyolefins, it still has good electrical insulation. Because of its high glass transition temperature and low moisture absorption, it can maintain good electrical properties under a wide range of temperature and humidity conditions. Especially, its dielectric constant and dielectric loss are close to constant in the range of 10 ~ 130 ℃, so it is suitable for manufacturing capacitors. PC polycarbonate has certain chemical resistance. It is resistant to water, organic acid, dilute inorganic acid, oxidant, salt, oil, fatty hydrocarbon and alcohol at room temperature. However, it is eroded by alkali, amine, ketone, ester and aromatic hydrocarbon, and dissolved in trimethyl methane, dichloroethane, cresol and other solvents. Long term immersion in boiling water will also occur hydrolysis. In some chemical reagents, such as carbon tetrachloride, polycarbonate may cause stress cracking
本公司长期供应美国RTP PC,德国拜耳PC,日本帝人PC,基础创新塑料(美国)PC,日本三菱工程PC,美国液氮PC,韩国PC,韩三星毛织PC,货源稳定,质量保证,原厂原包,假一罚十。可提供SGS、ROHS、UL黄卡、MSDS、FDA、COA、PDF物性表等各项数据,公司有技术跟踪服务,欢迎来电洽谈!
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