The effect of using PBO and phthalandione as a combinative extender on the extension is tested.
并与
用,测定了用效果。
The effect of using PBO and phthalandione as a combinative extender on the extension is tested.
并与用,测定了用效果。
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
,本文中的聚氨酯为具有不同支化程度的可溶
聚合物。
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).
尿素为扩链剂，合成了一系列聚氨酯脲热塑弹体及其硬段模型化合物。
：
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