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发明公开
CN105440395A 一种高发泡倍率聚乙烯泡沫材料及制备方法 无效 - 驳回

一种高发泡倍率聚乙烯泡沫材料及制备方法
摘要：
本发明一种高发泡倍率聚乙烯泡沫材料及制备方法，包含如下步骤：将超高分子量聚乙烯(UHMWPE)与其他聚乙烯(PE)烘干后，与发泡剂、成核剂、润滑剂进行高速混合后；然后在挤出机上进行熔融挤出发泡；制得高倍率PE泡沫材料；将1-10份UHMWPE、0-10份高密度聚乙烯(HDPE)、80-99份低密度聚乙烯(LDPE)、1-10份发泡剂、0.1-2份成核剂、0.1-2份润滑剂均匀混合，上述三种PE树脂的总和为100份，均为质量份；将得到的混合物加入螺杆挤出机反应器中，进行熔融混合挤出发泡，制得高发泡倍率PE泡沫材料。本发明得到一种利用UHMWPE改性普通聚乙烯，生产高发泡倍率(≥5倍)PE泡沫材料的制备方法。
摘要（英）：

The invention relates to a high-foaming rate polyethylene foamed material and a preparation method thereof. The method comprises the following steps: drying ultrahigh molecular weight polyethylene (UHMWPE) and other polyethylene (PE), and carrying out high speed mixing on the UHMWPE, the PE, a foaming agent, a nucleating agent and a lubricant; carrying out melt extrusion foaming on the above obtained mixture in an extruder to prepare a high-rate PE foamed material, and concretely comprises the following steps: uniformly mixing 1-10 parts by mass of the UHMWPE, 0-10 parts by mass of high density polyethylene (HDPE), 80-99 parts by mass of low density polyethylene (LDPE), 1-10 parts by mass of the foaming agent, 0.1-2 parts by mass of the nucleating agent and 0.1-2 parts by mass of the lubricant, wherein the sum of the parts of above three PE resins is 100; and adding the above obtained mixture into a screw extruder reactor, and carrying out The preparation method allows the high-foaming rate (not lower than 5 times) PE foamed material to be produced by using UHMWPE modified common polyethylene.

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