The result indicates that 680X possesses high relative molecular mass and its appropriate distribution,exhibiting comparatively high melt strength. Its mechanical properties and processability of 680X are superior and therefore,can meet the requirements of PS foamed sheet.
680X具有较高的相对分子质量和适当的相对分子质量分布,因而具有较高的熔体强度,其力学性能和加工性能优良,制品的性能符合挤出法PS发泡板材的要求。
参考来源 - 挤出法PS发泡板材专用树脂的结构与性能·2,447,543篇论文数据，部分数据来源于NoteExpress
With extending the period of hot water foaming time, the density of foamed sheet was decreased.
随着热水发泡时间的延长，泡沫塑料密度呈现负相关的联系。
The results showed that PP/LDPE has high-ratio of foaming , the surface of foamed sheet was smooth and has good overall properties.
结果表明： PP／LDPE共混体系的发泡倍率较高，发泡片材表面光滑，气孔细密，具有较好的综合性能。
Moreover, the invention provides higher impact strength and tensile strength for products and is a low-foamed sheet special regulator which has small dosage and high efficiency.
并且能为产品提供较高 的冲击强度和拉伸强度，是一种用量少效能高的低发泡板材专用调节剂。
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