PP 91500 金发91500
[14] 复合化复合化是将废旧PP与非高分子材料混合制备复合材料的过程，是实现废旧PP高性能化、功能化的主要途径。废旧PP复合化可改善其刚性、强度、热学、电学等物理与力学性能，降低成本等。
[14] 按照填料成分可分为无机填料和有机填料。
[14] 无机填料复合化常用于PP复合的无机填料都可以用来与废旧PP复合，例如碳酸钙、滑石粉、蒙脱土、金属氧化物、粉煤灰和玻璃纤维等。研究发现这些无机填料虽能显著改善废旧PP刚性、降低成本，但与废旧PP极性相差较大，表面能高，相容性差，导致复合材料的断裂伸长率和冲击韧性下降。
14 Organic Filler compound common organic filler including woodflour and wood fiber, starch, wheat straw, hemp fiber and wastenewspaper, etc. . The microcellular foaming technology of waste PPfilled with wood fiber was studied. The results showed that themicrocellular structure was uniformly distributed at 180 °C andholding pressure. Because the microporous structure can prolong thepropagation path of the crack and absorb the impact energy, theimpact strength can be improved. 14 natural fiber is a new kind ofwaste PP filling material. In view of its high water absorption andincompatibility with waste PP, surface treatment is the main methodto realize high performance of natural fiber filled waste PPcomposite material. In addition, waste polyester can also be usedto modify waste PP. Some scholars have studied the crystallizationbehavior of waste PP / waste polyester fabric composites. Theresults show that waste polyester and waste nucleating agent haveheterogeneous nucleating effect on the crystallization of waste PP,the crystallization temperature of waste PP was raised and thecrystallization was induced.