【摘要】 在振频0-12 Hz,振幅0-0．28 mm的范围内,使用自主发明的电磁动态注塑机研究了振动参数的变化对 HIPS制品力学性能和冲击断面形态结构的影响。结果表明:制品的力学性能对振动参数的响应不完全是一个单调趋势,而是存在一个最佳的响应范围。电磁动态注塑机引入的全程动态注塑过程能够同时提高制品的拉伸性能和冲击性能,冲击强度和拉伸强度最大提高幅度分别为20％和14．4％。而制品的冲击断面微观结构也表明,全程动态注塑过程能有效改善HIPS制品的微观结构。更多还原

【Abstract】 The effects of vibration on the mechanical properties and the morphology of impact fractured surface of injected HIPS samples are investigated at frequencies between 0 and 12 Hz and amplitudes between 0 and 0.28 mm. There are optimal ranges for the two vibration parameters, the tensile and impact strengths of the injected samples can be increased by 20 % and 14. 4 % , respectively, compared with those devoid of vibration. And the morphology of the fractured surface becomes finer.更多还原