blowing agent 中文意思是什麼
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For conventional high - speed mass production of flexible tubes, the skirt of the tube must be obtained directly by extrusion with a thickness at least six times lower, under conditions so that it is difficult or even impossible, to control the action of the blowing agent in the screw, then in the convergent zone of the extruder, so that a skirt is obtained with a expanded extruded layer with significant irregularities in thickness, which does not make it possible to provide an acceptable industrial packaging
對于軟管的常規高速批量生產，必須通過將管的厚度擠壓到至少為原來的六倍以下來直接得到管裙，在這樣的情況下很難甚至不可能控制膨脹劑在螺桿中，然後在擠壓機收斂段的運動，這樣，獲得的管裙具有厚度明顯不規則的擠出層，其不可能提供可接受的工業包裝。 -
Research development of blowing agent of polyurethane foam in environmental protection
環保聚氨酯泡沫塑料發泡劑研究進展 -
Standard test method for determination of retained blowing agent in extruded polystyrene foam
測定擠制聚苯乙烯泡沫材料中留存發泡劑的標準試驗方法 -
By changing the contents of blowing agent and the inner size and changing the density distribution of structural polyurethane foam, the influences of the inner structure on the properties of gradient density polyurethane foam were investigated
摘要通過改變發泡劑用量和採用不同密度泡沫組合，來改變聚氨酯結構泡沫整體的密度分佈，研究了梯度密度聚氨酯泡沫塑料的性能。
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