The effect of using PBO and phthalandione as a combinative extender on the extension is tested.
并与苯酐联用,测定了联用效果。
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西文字的延伸
And two new segmented poly(urethaneureas) were prepared from poly(tetramethylene glycol)(PTMG) or polyadipate of 1,4 butanediol(PBA), MDI and Urea(as chain extender).
以尿素为扩链剂，合成了一系列聚氨酯脲热塑
弹体及其硬
模型化合物。
Study of low angle laser light scattering indicats, in a certain limits of extender amount, the polyurethane have a amorph pseudomicrostructure...
溶解测定结果表明,本文中的聚氨酯为具有不同支化程度的可溶聚合物。
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