The effect of using PBO and phthalandione as a combinative extender on the extension is tested.
并与苯
,测定了效果。
The effect of using PBO and phthalandione as a combinative extender on the extension is tested.
并与苯,测定了效果。
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，
成了一系列
氨酯脲热塑性弹性体及其硬
模型化
。
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,本文中的氨酯为具有不同支化程度的可溶性。
声明：以上例句、词性分类均由互
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