PPH1315 韩国LG耐高温 注塑级，用于热水壶、取暖器、咖啡壶等家用电器
物性参数：熔体流动速率:6 g/10min 缺口冲击强度:4 拉伸强度:42 MPa 断裂伸长率:100 % 弯曲模量:2256MPa 硬度:110 维卡软化点:156 ℃ 热变形温度:140 ℃
Comprehensive performance
The comprehensive performance of PP is superior to that of PE. PPproducts are light in weight, good in toughness and chemicalresistance. The disadvantages of PP are: low dimensional accuracy,insufficient rigidity, poor weather resistance, easy to produce"copper hazard". It has POST-SHRINKAGE phenomenon. Afterdemoulding, it is easy to aging, brittle and deformed. In dailylife, the commonly used fresh-keeping box is made of PP material.In order to prevent photoaging, ultraviolet absorbent is added toPP, which can convert the ultraviolet absorption of wave 290-400 nminto longer wavelength light without destructive effect. For PPplastic products buried in soil or used in indoor shelter fromlight, only main and auxiliary antioxidants can be added, withoutadding ultraviolet absorbents. The shrinkage and crystallinity ofPP are lower than those of PE.
The surface hardness of P is lower than that of PE in five kinds ofgeneral plastics. When the crystallinity is high, the hardnessincreases correspondingly, but it is still lower than that of PVC,PS, ABS, etc. Among the five general plastics, PP has the best heatresistance. PP plastic products can work for a long time at 100 C,without external force, PP products will not deform when heated to150 C. After using nucleating agent to improve the crystallinestate of PP, the heat resistance of PP can be further improved. Itcan even be used to make utensils for heating food in microwaveoven.
