The effects of blowing agent, talc, and injection velocity on properties of polypropylene molded parts were presented. Blowing agent was dosed to plastic in amounts 1–2% and talc 10–20%. The results of selected properties, such as weight, thickness, hardness, impact strength, tensile strength, and gloss, were presented. The article also presents microscopic investigations. The blowing agent and talc content have a large impact on mechanical properties and gloss of parts than addition of blowing agent. The use of the blowing agent in an amount of 2 wt% will allow the reduce injection cycle time by reducing the hold pressure and hold time. Addition of blowing agents lowers of tensile strength, hardness, impact strength, and significantly affected the gloss. Talc filler contributes to a significant increase in the weight of parts, a decrease in hardness, impact strength, and tensile strength. The injection velocity has no significant effect on parts properties.

中文翻译：

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发泡剂添加量、滑石填料含量和注射速度对聚丙烯注射成型零件的选定性能、表面状态和结构的影响

介绍了发泡剂、滑石粉和注射速度对聚丙烯成型部件性能的影响。发泡剂以 1-2% 的量和 10-20% 的滑石粉添加到塑料中。展示了选定特性的结果，例如重量、厚度、硬度、冲击强度、拉伸强度和光泽度。文章还介绍了微观研究。与添加发泡剂相比，发泡剂和滑石粉含量对零件的机械性能和光泽度的影响更大。使用2重量％的发泡剂将允许通过降低保压和保压时间来减少注射周期时间。发泡剂的加入降低了拉伸强度、硬度、冲击强度，并显着影响了光泽度。滑石填料有助于显着增加零件的重量，硬度、冲击强度和拉伸强度降低。注射速度对零件性能没有显着影响。