MANUFACTURING PROCESS AND COMPOSITION FOR FOAMED PVC-P ROCK SHIELDS
    22.
    发明公开
    MANUFACTURING PROCESS AND COMPOSITION FOR FOAMED PVC-P ROCK SHIELDS 审中-公开
    用于泡沫PVC-P岩石屏障的制造方法和组合物

    公开(公告)号:EP3201262A1

    公开(公告)日:2017-08-09

    申请号:EP15778226.9

    申请日:2015-09-24

    Abstract: A plasticized PVC formulation for foam extrusion including polyvinyl chloride, at least one plasticizer, at least one nucleating agent and a chemical blowing agent, wherein the plasticized PVC formulation is a dry blend containing 0.5 to 5% by weight of one or more nucleating agents and 0.1 to 3% by weight of the chemical blowing agent, wherein the blowing agent is sodium bicarbonate and the nucleating agent is talcum, and a foam extrusion method using said formulation. The extruded plasticized PVC foam is particularly suitable for rock shield pads used for pipeline protection. The foams are lightweight and require less consumption of materials with comparable properties to corresponding solid articles.

    Abstract translation: 本发明涉及用于泡沫挤出的增塑PVC配制剂,其包含聚氯乙烯,至少一种增塑剂,至少一种成核剂和化学发泡剂,其中增塑PVC配制剂是含有0.5-5重量% 更多的成核剂和0.1-3重量%的化学发泡剂,其中发泡剂优选为碳酸氢钠并且成核剂优选为滑石,以及使用所述配方的泡沫挤出方法。 挤出增塑PVC泡沫特别适合用于管道保护的岩石护垫。 泡沫塑料重量轻并且需要较少的材料消耗,具有与相应的固体物品相当的性能。

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