聚丙烯_粉煤灰微发泡复合材料的制备及发泡性能研究第 36 卷 第 1 期 中 国 塑 料 Vol. 36,Norsion of FA in PPFP1919 matrix can improve the melt strength,melt elasticity and foaming ability of the composites. In addition,FA also plays a heterogeneous nucle⁃ ation role in the foaming process,providing nucleation point,which improves the foaming quality and foaming effect, and the mechanical properties of the composites after foaming are affected to a certain extent. Comprehensive analysis shows that when FA content was 10 phr,the foaming effect of PPFP1919/FA micro foaming composite is the best. Key words:fly ash;polypropylene;composite;foaming property 填充到聚氯乙烯(PVC)基体中制备发泡效果良好的复 0 前言 合发泡板材[2];此外还开发了更精细、高效和高性价比 煤炭是很重要的能源材料,但在火力发电的过程 的综合利用方式,优化了产业结构,不断完善了 FA 变 中会产生大量的粉煤灰残渣,因此粉煤灰资源化利用 害为利的产业链,实现其最大限度的开发和利用[3⁃6]。 至关重要,利用好粉煤灰不仅能创造经济效益,变废为 研究表明,将 FA 添加到橡胶等制品中能起到一定的补 宝,实现废物资源化利用,还能缓解土地占用压力,减 强作用和交联效果[7];添加到塑料中时,对其熔体强度、 [1] FA SiO TiO K O