该词条未找到_海词词典

您要查找的是不是：

Polymer of polar monomer and copolymer of polar monomer with nonpolar monomer are prepared via metallocene catalysts. 采用茂金属催化体系可以制备极性烯类单体的均聚物及极性烯类单体与非极性烯类单体的共聚物。
The copolymerization of polar monomer MAH grafting on APP in the presence of oxygen has been studied in solution. 采用溶液法选用极性单体马来酸酐，在非隔氧条件下，对无规聚丙烯进行接枝改性。
Two-step procedure is preferable to prepare high molecular weight poly(olefin-ester)s with a high polar monomer content and a high melting temperature. 两段聚合过程适于制备高分子量的烯烃共聚酯，聚合物收率达90%25，极性单体的插入率大于10%25，熔融温度高达120℃。
The development of dinuclear metallocene is reviewed.The effects of catalyst structure on polymerization of olefin and polar monomer are summarized. 综述了双核茂金属化合物的研究进展及其在烯烃和极性单体聚合方面的应用及双核茂金属化合物的合成及性能研究;
After careful selection of polar monomer and intermediate, a kind of waterproofing fatliquor was prepared, which has excellent waterproofing and fatliquoring properties. 通过对多种极性单体、中间体及合成条件的优选、制备了具有防水效果的加脂剂，其加脂性能和防水性能都很理想。
The formulation,technology and properties of new PVC compound forshoe-making,modified with ethylenevinyl acetate-third polar monomer terpo-lymer(ELVALPY 741),powered nitrile rubber(CHEMIGUM P83)and carbo-xylated nitrile rubber(XNBR),was introduced. 本文介绍了采用乙烯-醋酸乙烯-第三极性单体的三元共聚物(ELVALOY741)、粉末丁腈橡胶(如 CHEMICUM P83)和羧基丁腈橡胶(XNBR)改性的聚氯乙烯(PVC)所制造的新型鞋用材料的配方、工艺和性能。
The graft copolymerization of natural rubber(NR) and polar monomer maleic anhydride (MAH)in the presence of oxygen has been studied in toluene solution. Benzoyl peroxide(BPO) was used as initiator. 采用溶液法,选用极性单体马来酸酐(MAH),在非隔氧条件下,以过氧化苯甲酰(BPO)为引发剂对天然橡胶(NR)进行接枝改性。
Tensile strength of CPE material was increased by adding polar monomers of MA,AN and St. 极性单体MA、AN及St的加入提高了CPE材料的拉伸强度。
The solubility of polymers in alcohol mainly effected by the monomer ratio and solution temperature and benefited to increase of the amount of polarized monomer (AA and VAc). 增加极性单体AA和VAc的用量，可以改善聚合物在乙醇中的溶解性；通过结构表征发现，聚合物中AA上的羧基基团易在聚合物里形成氢键而影响聚合物的溶解性。
The two systems of government are polar opposites. 这两种政体正好相反。
In one word, R(Ph2Cu)Li lithium organocuprates such initiating system inspires a whole new efficient way of polymerization of MMA and the other polar monomers. 总的说来，n-BuLi/Ph2PCu有机铜锂引发体系为MMA等极性单体的聚合和嵌段聚合物的合成提供了一条新的途径。
This paper reviewed the progress in the studies on copolymerization of olefin with O|cotained polar monomers in the presence of Ziegler|Natta catalyst, metallocene catalyst and late transition metal catalyst. 综述了在齐格勒纳塔、茂金属和后过渡金属催化体系下 ,烯烃与含氧极性功能单体共聚的研究进展
We endeavor to realize the block-copolymerization of non-polar monomers with mass polar monomers by means of the conversion of alkyl lithium and alkoxyl lithium to lithium organocuprate. 二是对有机铜锂引发极性单体（以甲基丙烯酸甲酯为代表）聚合进行了初步探讨，试图通过烷基锂或烷氧基锂向有机铜锂的转换，实现非极性单体与极性单体的嵌段共聚。
Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
The influences of blending ratios, EPDM's quantity , PP melt - extruded grafting copolymers, unsaturated polar monomers and plasticizer on the mechanical properties of the blends were investigated. 考察了共混比、不饱和极性单体、PP熔体挤出接枝物、增塑剂及EPDM用量对共混物力学性能的影响。
Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
Keywords rare earth catalyst;styrene;4-vinylpyridine;polar monomer;copolymerization;rare earths; 稀土催化剂;苯乙烯;4-乙烯基吡啶;极性单体;共聚;稀土;
Located or found in one of the Polar Regions. 环极的，围绕极地的位于或发现于一个极地区域中的
Unreacted monomer is stripped and recycled. 未反应单体经汽提后回收。
Keywords Polyolefin functionalization;Coordination copolymerization;Oxygencontaining polar monomer;Propylene; 聚烯烃功能化;配位共聚合;含氧极性单体;丙烯;