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Polythylene 3)性質(zhì): ① 耐化學(xué)腐蝕; ② 良好的電絕緣性和高頻介電性能; ③ 韌性、耐寒性好; ④ 較低的摩擦系數(shù); ⑤ 不易吸水; ⑥ 不耐熱,不耐大氣老化。 Polythylene Low Density Polythene Properties: Soft, Flexible good electrical insulator絕緣體 . Most LDPE application is film based. Industry uses also include wire and cable coating, injection and Blowmolding. is used for Plastic bags, Bottles 4LDPEHigh Density Polythene Properties: Tough, Feels Waxy, Resistant to chemicals. 2HDPEHDPE is used for Buckets(水桶 ), Basins盆 , Bottles, Containers and is extensively used in both Blow Moulding and Injection Moulding processes Back 1) 結(jié)構(gòu)單元: 2) 性質(zhì): 無毒、無味、無臭、半透明蠟狀固體。密度小,力 學(xué)性能高于聚乙烯;耐熱性、耐水性良好,化學(xué)穩(wěn)定性 好;但不耐芳香族和氯化烴溶劑,耐寒性差,易老化。 —— CH2— CH2—— [ ] CH3 │ Polypropylene Polypropylene Properties: Rigid, Good fatigue resistance, Good chemical resistance Polypropylene is one of the more flexible plastics and is used for Plastic hinges, Crates, Rope Yarn 5PPBack 1) 結(jié)構(gòu)單元: 2) 性質(zhì): 具有較高的強(qiáng)度 、 剛性;良好的電絕緣性 、 耐化學(xué)腐 蝕性;能溶于四氫呋喃和環(huán)已酮等有機(jī)溶劑;具有阻燃 性;但熱穩(wěn)定性較差 , 使用溫度較低 , 介電常數(shù) 、 介電 損耗較高 。 —— CH2— CH2—— [ ] Cl │ Polyvinyl Chloride Polyvinyl Chloride Properties: Rigid, Weather resistant. 3PVCPVC is used for Gutters(水槽 ), Window frames Drainpipes. It is often used in the Extrusion process. Back 1) 結(jié)構(gòu)單元: 丙烯晴 (A)、丁二烯 (B)、苯乙烯 (S)三種單體(共聚生成) 2) 性質(zhì): 丙烯晴 能提高強(qiáng)度、硬度、耐熱性和耐腐蝕性, 丁二烯 能提高韌性, 苯乙烯 能提高電性能和成型加工性能。 ABS塑料具有較好的抗沖擊性能、尺寸穩(wěn)定性和耐磨性,成型性好,不易燃,耐腐蝕性好,但不耐酮、醛、酯、氯代烴類溶劑。 Acrylonitrile Butadiene Styrene Acrylonitrile Butadiene Styrene Properties: Strong and Tough. Impact resistant, Scratch resistant, Chemical resistant. Comes in a wide range of colours. 5PPABS is used extensive