PC SC-1220R--PC has good weather resistance and good stability to heat, heat radiation, air and ozone. The physical and mechanical properties of the products are almost unchanged after one year of outdoor exposure, but the PC will undergo photooxidation reaction under the action of ultr***iolet light near 290 nm and gradually aging. Photoaging begins with the yellowing of the surface, and gradually breaks the whole molecular chain, reduces the molecular weight, and finally cracks. Anti aging properties can be improved by adding ultr***iolet absorbers. PC (self extinguishing material) can burn in fire, but it will self extinguish after le***ing the fire source. If antimony trioxide flame retardant and phosphate plasticizer are added into it, the flame resistance of PC can be improved. Pure PC is colorless and transparent in appearance and has good tran***ittance. Its tran***ittance is related to the w***elength of light and the thickness of products. The tran***ittance of PC with thickness of 2mm is 90%. But it can not tran***it short w***e light below 290 × 10-3 nm
PC的分子极性不大，Tg高，吸水性低，因此具有优良的电绝缘性能，已接近或相当接近向来被认为电绝缘性能优良的PET,PC本身***、无臭、无味，具有一定的抗化学腐蚀能力，对有机酸、稀无机酸、盐类、油、脂肪烃及醇都较稳定，但不耐氯烃、稀碱、***水、浓酸、王水以及***等。虽不会引起明显降解，但较容易使PC溶解的溶剂有：四氯***、二氯***、二氯***、三氯***、三***、***、四氢***等等。PC有一定的吸水性，但不影响尺寸和形状的稳定，它在正常使用情况下的吸水率是0.15%，室温中的吸水率是0.35%，沸水中吸水率为0.58%。它能耐60℃温度的热水，但在更高的水温下就会导致开裂并失去韧性。水蒸气中蒸煮100次以后，其物理力学性能显著下降。.
SC-1220R 物性表
物理性能 额定值 单位 测试方法
密度 1.20 ASTM D792
熔体流动速率 (300℃,1.2kg) 22 g/10min ASTM D1238
吸水率 0.20 % ASTMD 570
成型收缩率 0.5-0.7 % ASTM D955
机械性能 额定值 单位 测试方法
拉伸屈服强度 630 kgf/cm ASTM D638
断裂伸长率 90 % ASTM D638
弯曲强度 920 kgf/cm ASTM D790
弯曲模量 24000 kgf/cm ASTM D790
悬臂梁缺口冲击强度 (1/8) 80 /cm ASTM D256
洛氏硬度 77 M ASTM D785
热性能 额定值 单位 测试方法
热变形温度 ASTM D648
(0.45Mpa) 136 ℃
(1.8Mpa) 125 ℃
维卡软化温度 149 ℃ ASTM D1525
阻燃性 V-2 UL94