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支链化结构高分子乳化剂的合成机理和应用 被引量:1
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作者 曾松 张凯 《爆破器材》 CAS 北大核心 2020年第4期27-32,38,共7页
针对聚异丁烯顺丁烯二酸酐(PIBSA)和醇胺类产品为原料氯化催化合成的支链化结构的新型高分子乳化剂(以下简称氯化法高分子乳化剂),进行了合成机理的研究、谱图分析和实验室储存性能的测试。该乳化剂制备的基质性能良好,添加量(质量分数... 针对聚异丁烯顺丁烯二酸酐(PIBSA)和醇胺类产品为原料氯化催化合成的支链化结构的新型高分子乳化剂(以下简称氯化法高分子乳化剂),进行了合成机理的研究、谱图分析和实验室储存性能的测试。该乳化剂制备的基质性能良好,添加量(质量分数)分别为1.5%和1.2%时,经过9个高低温循环,和进口高分子乳化剂添加量1.5%(质量分数)生产的基质析晶程度无差别。3组工业试验结果表明,氯化法高分子乳化剂(质量分数1.2%)生产的乳胶基质,初始爆速达3 787 m/s以上,与进口高分子乳化剂生产的乳胶基质性能相当;在矿山颠簸500 km和储存30 d的条件下,氯化法高分子乳化剂制备的乳胶基质性能衰减最小。因此,氯化法高分子乳化剂应用在现场混装乳化炸药中,可以降低乳化剂的添加量,从而达到降低成本的目的,也可以替代国外进口的高分子乳化剂,具有良好的爆破效果和储存性能。 展开更多
关键词 支链化结构 聚异丁烯 乳胶基质
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Polymers with complicated architectures constructed from the versatile, functional monomer 1-ethoxyethyl glycidyl ether
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作者 Jiaxing Zhang Guowei Wang 《Science China Chemistry》 SCIE EI CAS CSCD 2015年第11期1674-1694,共21页
Because glycidyl(Gly) contains an epoxy and an active hydroxyl group, the Gly unit is difficult to introduce into certain polymeric chains in a controlled manner and usually yields hyperbranched polyglycidyl. Alternat... Because glycidyl(Gly) contains an epoxy and an active hydroxyl group, the Gly unit is difficult to introduce into certain polymeric chains in a controlled manner and usually yields hyperbranched polyglycidyl. Alternatively, the monomer 1-ethoxyethyl glycidyl ether(EEGE), derived from Gly and ethyl vinyl ether, has shown potential for application in polymer chemistry, and homopolymerization of this monomer directly produces linear poly(1-ethoxyethyl glycidyl ether) and further yields linear polyglycidyl. In this review, the initiation system of the EEGE monomer is first discussed in terms of chain transfer to monomers in ring-opening polymerization of epoxides with substituent groups. Then, random copolymerization of EEGE with other epoxides is considered. In addition, because the EEGE units on polymers can be transferred to Gly units and further used to construct copolymers with complicated architectures, the applications of EEGE monomers to block, graft, and hyperbranched copolymers are reviewed. Finally, the synthesis of main chain and terminal functional polyethers by transforming the hydroxyl groups at the polymer end or on the main chain into certain functional groups are also discussed. Chemistry based on EEGE has been proved to be an efficient, versatile route to constructing copolymers containing Gly units and ultimately yielding the target properties and applications. 展开更多
关键词 linear polyglycidyl (LPG) poly(1-ethoxyethyl glycidyl ether) (PEEGE) block polymer graft polymer hyper-branched polymer
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