超细Al(OH)_3对PP球晶结构和性能的影响

Effect of ultrafine Al(OH)_3 on spherulite structure and properties of PP

分别用超细Al(OH)_3和普通Al(OH)_3填充聚丙烯(PP),研究了超细Al(OH)_3/PP和普通Al(OH)_3/PP体系的力学性能、熔体流动性、阻燃性能及其结晶的微观形态。结果表明,加入适量的超细Al(OH)_3对PP具有增韧效应;超细Al(OH)_3能使PP球晶显著细化;与普通Al(OH)3/PP相比,超细Al(OH)_3/PP具有较好的抗冲击性能、拉伸性能和弯曲性能,但熔体流动性低。

The ultrafine Al（OH）3 and general Al（OH）3 powder were used respectively to fill polypropylene （PP）. The mechanical properties, melt flowability, flame resistance and spherulite morphology of the ultrafine Al（OH）3/ PP and general Al（OH）3/PP blend were studied. The experimental data indicate that ultrafine Al（OH）3 powder added in suitable dosage exerts a toughening effect on PP and make the size of spherulites of PP become smaller. The ultrafine Al（OH）3/PP system possesses better impact, tensile and flexural strength but lower melt flowability in comparison with the general Al（OH）3/PP blend.