The polyurethane glue stock used for making draft roll was investigated by using self made chain extender and modifier. The varieties and molecular weight of polyester polyol were selected.
采用自制扩链剂与改性剂，通过对聚合多元醇的品种与分子量的选择，研制出了适合纺织牵伸辊用的聚氨酯胶料。
The polyurethane glue stock used for making draft roll was investigated by using self made chain extender and modifier.
采用自制扩链剂与改性剂，通过对聚合多元醇的品种与分子量的选择，研制出了适合纺织牵伸辊用的聚氨酯胶料。
The invention discloses a unilateral air draft process of kiln process chain grate preheating section for making oxidized pellet.
本发明公开了生产氧化球团矿链篦机――回转窑法链篦机预热段的单边抽 风工艺。
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