摘要
以RPP(增强聚丙烯)为研究对象,在不同增韧剂及偶联剂改性纳米级碳酸钙的条件下,采用共混法制备了一系列改性的RPP.以乙烯-辛烯共聚物(POE)为增韧剂,以纳米级碳酸钙(nano-CaCO3)为无机填料对RPP的共混改性工艺进行研究,探讨了两种物料对RPP力学性能的影响,确定了最佳的配比及工艺参数.试验结果表明:两种物料对RPP都具有良好的增韧效果,用POE、nano-CaCO3共同作用的效果优于只使用POE作为增韧剂的改性效果.加入适量用偶联剂活化处理的nano-CaCO3,可以提高共混物的力学性能,以钛酸酯为偶联剂活化nano-CaCO3并与POE按摩尔比1:1混合,当两者在RPP/POE/nano-CaCO3三元共混体系中质量分数为25%时改性RPP材料的冲击强度达到最大值,为原先未添加任何添加剂时强度的2.5倍左右.
The RPP is taken as the object of research in this paper, and a series of modified RPP are prepared by the blend under the condition of nanometer calcium carbonate modified by both different toughening agent and the coupling agent. Then the blending modification process of RPP is studied under the conditions of taking the ethylene-octene copolymer （POE） for toughening agent and taking the nanometer calcium carbonate （nano-CaCO3 ） for inorganic fillers. Next, the effect that two materials make on the mechanical properties of RPP is discussed, and the optimum proportion and process parameter are determined. However, the final results show that the two materials have good toughening effect on the RPP, and the toughening effect that the POE makes on the RPP together with nano-CaCO3 is better than the POE makes alone. If the blends are added with measurable nano-CaCO3 processed actively by coupling agent whose mechanical properties will be improved. As a result, if the nano-CaCO3 processed actively by the coupling agent of titanate and the POE are mixed at a molar ratio of 1 ： 1, the impact strength of modified RPP will reach its maximum when the content of the ternary blend of RPP/POE/nano-CaCO3 reaches 25%. and its strength is about 2. 5 times of the original intensity which has not been added to any additives.
出处
《哈尔滨理工大学学报》
CAS
2013年第3期125-130,共6页
Journal of Harbin University of Science and Technology
基金
黑龙江省自然科学基金(E201128)
关键词
增韧剂
乙烯-辛烯共聚物
改性
toughening agent
ethylene-octene copolymer （POE）
modification
