Development of impact propylene copolymer with high melt flowability;
高流动抗冲共聚聚丙烯开发进展
Homogeneous design of experimentation was applied to gaseous copolymerization of ethylene-propylene over spherical Ziegler-Natta catalyst to prepare ethylene-propylene impact copolymer.
运用均匀设计法对乙烯-丙烯气相共聚进行实验设计,将反应条件与聚丙烯乙丙抗冲共聚物(简称共聚物)的组成进行关联。
Flame-retardant ABS toughened by the impact modifier and CPE for specially-used engineering plastics was prepared from ABS757 matrix and BA-59P/Sb 2O 3 with the addition of the high-efficiently synergistic flame retardant system,and its retardant property was examined.
以丙烯腈、丁二烯、苯乙烯三元共聚物ABS 757为基体树脂 ,通过添加高效阻燃复合体系 ,研究了这一体系的阻燃性能 ,同时研究了采用抗冲击改性剂与氯化聚乙烯 (CPE)复合增韧阻燃ABS体系的增韧效果 ,制备了阻燃ABS有色工程塑料。
The molecular composition and molecular structure of MBS,CPE and ACR,which were used as the impact modifier of PVC,were analyzed,and their impact modification mechanism were studied as well as their influences on the low temperature impact strength,weather resistence,Vicat softening point and toughness of PVC products.
对PVC冲击改性剂——MBS、CPE和ACR的分子组成和分子结构进行了分析,研究了其抗冲改性机理及对PVC制品低温冲击强度、耐候性、维卡软化点、韧性的影响。
Study on improving impact resistance of acrylic clear powder coatings;
增强丙烯酸粉末罩光清漆抗冲击性能的研究
Large diameter synthetic fiber reinforced concrete was made for measuring the properties of fresh concrete mixture and the impact resistance of the hardened samples.
对掺入大直径合成纤维后的混凝土拌和物性能以及混凝土硬化试件的抗冲击性能进行了试验研究。
By effective bonding ,toughness and impact resistance of steel fiber are greatly improved and materials composed with organic & inorganic substances and metallic & non metallic materials possess high impact resistance & abras.
通过高效粘结 ,充分发挥了钢纤维的增韧抗冲击作用 ,使这种有机无机复合、金属非金属复合的混凝土材料具有优异的抗冲击性和耐磨性。