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研究了玻璃微珠填充PP中玻璃微珠含量及粒径大小对复合材料力学性能和熔融、结晶行为的影响。结果表明,复合材料随着玻璃微珠含量增加,拉伸强度增大,冲击强度减小。在相同条件下,小粒径微珠填充体系拉伸强度和冲击强度均高于大粒径微珠填充体系。玻璃微珠在PP中具有成核作用,PP以异相成核方式结晶,提高了PP的结晶温度,结晶速率增大。流动性随着玻璃微珠含量的增加而增大,然后随之下降。
The effects of glass bead content and particle size on the mechanical properties, melting and crystallization behavior of the composites were investigated. The results show that with the increase of the content of glass beads, the tensile strength increases and the impact strength decreases. Under the same conditions, the tensile strength and impact strength of the small particle size bead filler system are higher than those of the large diameter bead filler system. Glass beads have nucleation in PP. PP crystallizes in heterogeneous nucleation mode, which increases the crystallization temperature of PP and increases the crystallization rate. Liquidity increases with increasing glass bead content and then decreases.