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- isotactic polypropyiene 等规聚丙烯
- Wound with Metallized Polypropyiene Film. 金属化聚丙烯薄膜卷绕而成。
- It is called isotactic polypropylene . 是一种叫等规聚丙烯的材料。
- For isotactic PMMA, it is greater than that for atactic one. 相同条件下辐照,全同立构比无规立构试样的裂解产额更大。
- The best way to represent the isotactic structure is with molecular models. 表示等规结构的最好方法是用分子模型。
- Polyacetadehyde may exist in atactic, syndiotactic and isotactic forms. 聚乙醛可以以无规,间同和全同形式存在。
- Polyacetaldehyde may exist in atactic, syndiotactic and isotactic forms. 聚乙醛可以以无规,间同和全同形式存在。
- The dissolvability of chlorinated isotactic polypropylene (CIPP) prepared via solid state chlorinated was investigated. 研究了制备工艺条件、原料性质等对氯化等规聚丙烯溶解性能的影响。
- Isotactic diad decreases with the increase of radiation dose. Meanwhile, atactic and syndiotactic diad increases. 随着辐照剂量的增加,全同立构含量逐渐减少,而无规立构含量和间同立构含量却逐渐增加。
- The papers with 57 refs.(to Oct,1991)reviews the studies of structure and properties of isotactic PS. 本文综述了等规聚苯乙烯的结构与性能的研究。
- This review focus on the isotactic polystyrene(i\|PS) and syndiotactic polystyrene(s\|PS) crystal. 介绍了等规和间规聚苯乙烯的合成、晶型及晶体结构研究的进展情况。
- PHB has an unusually high degree of crystallinity due to the stereoregularity of the perfectly isotactic chains. 本文针对天津国韵生物科技有限公司提供的一系列poly(3HB-co-4HB)共聚酯,主要分三部分对其进行了研究。
- The structure of chlorinated isotactic polypropylene(CIPP) was analyzed by DSC,IR,and 1H-NMR. 借助DSC,IR,1H-NMR方法对搅拌式固相氯化制备的氯化等规聚丙烯(CIPP)的宏观氯原子分布和微观氯原子分布进行了分析。
- Solid phase grafting onto low isotactic polypropylene (LIPP) was studied in this paper. 研究了低等规度聚丙烯(LIPP)固相接枝马来酸酐(MAH)。
- The synthesis of isotactic polymers is usually only possible by means of special sterospecific (stereoregulating) initiators. 通常只能用特殊的立体定向(立体调发)引发剂(Ziegler催化剂)来合成等规聚合物。
- The synthesis isotactic polymers is usually only possible by means of special stereospecific (stereoregulating)initiators. 通常只能用特殊的立体定向(立体调节)引发剂来合成等规聚合物。
- The effect of properties of isotactic polypropylene on Chloridizing reaction and Basic Characteristic of Chloridizing reaction are discussed. 探讨了等规聚丙烯原料性质对氯化反应的影响,同时研究了氯化反应的基本特征。
- Isotactic poly(methyl methacrylate)(it-PMMA) is usually prepared by anionic initiators such as alkyllithium and Grignard reagents in organic solutions. 全同立构聚甲基丙烯酸甲酯通常使用阴离子活性聚合方法制备,引发剂为烷基锂、格利雅试剂等,反应在有机溶剂中进行。
- Conclusions about the solution properties of isotactic polystyrene suggested by Danusso and confirmed by Krigbaum were discussed. 从而讨论了前人在类似的工作中所得到的结果。
- The grafting reaction and the extent of grafting had significant effects on the crystallinity and crystalline forms of isotactic polypropylene. 接枝反应和接枝率对全同立构聚丙烯的结晶度和结晶形态有很大的影响;