Abstract: Polypropylene V30G and K4912 were respectively modified by melting blend method to prepare the special high rigidity PP material for the small household appliances. The effects of content of two nucleating agents G5588 and T5688 on the properties of polypropylene were studied. The prepared material showed the best property when using polypropylene PP (V30G) as matrix resin and G5588 as the nucleating agent. When the mass fraction of G5588 was 0.20%, the tensile strength of rigid polypropylene was 35.3 MPa, flexural strength was 37.87 MPa, impact strength was 3.84 kJ/m2, and the melt flow rate was 16.32 g/(10 min).

Key words: The nucleating agent, Polypropylene, Modified, High rigidity, Small household appliances

摘要： 采用熔融共混法对牌号为 V 3 0 G和 K 4 9 1 2的聚丙烯进行改性, 制备高刚聚丙烯小家电专用料, 研究两种成核剂G 5 5 8 8、 T 5 6 8 8的质量分数对聚丙烯性能的影响。结果表明, 选用聚丙烯 P P( V 3 0 G) 为基料、 成核剂G 5 5 8 8为增刚剂制得的高刚聚丙烯的性能最佳, 当成核剂 G 5 5 8 8质量分数为0. 2 0%时, 材料拉伸强度为3 5. 3MP a、3 7. 8 7MP a、 3. 8 4k J /m2、 1 6. 3 2g /( 1 0m i n) 。

关键词: 成核剂, 聚丙烯, 改性, 高刚, 小家电