
第42卷第5期
2014年5月【材料与性能】
聚氯乙烯 Polyvinyl Chloride
汽车用PVC/热塑性聚氮酯交联电缆料的研制
孙春英"·,优汝臣,孙晓爱”
(1.青岛科技大学化工学院,山东青岛266042;
2.山东济海医疗科技股份有限公司,山东潘博255000; 3.山东蓝星东大化工有限责任公司,山东淄博255028)
【关键调】PVC;聚氮酯;热塑性材料;交联;电缆料
Vol.42,No.5 May,2014
【摘要】以汽车用电缆料为试验目标,研究了增塑剂、引发剂、助交联剂、热塑性聚氨酯(TPU)的用量对 PVC/TPU体系硬度、力学性能、热延伸率的影响,并考察了其耐磨性能和耐老化性能。结果表明:①在助交联剂 TAIC存在下,引发剂DCP可引发PVC/TPU体系的交联反应,并且随着DCP、TPU用量的增加,交联度增大。② PVC/TPU交联电缆料的优化配方为:PVC100份,钙锌稳定剂8份,TOTM50份,TAIC3份,DCP0.2份,TPU30 份,抗氧剂0.8份,其他助剂适量;采用该配方能生产出合格的汽车用电缆料。
[中图分类号】TQ325.3
【文献标志码】B【文章编号】1009-7937(2014)05-0020-05
Development of crosslinked PVC/thermoplastic polyurethane cable compoundsfor automobiles
SUN Chunying',QIU Ruchen',SUN Xiaoai
(1. College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, China;
2. Shandong Jihai Medical Technology Co., Ltd., Zibo 255000, China;
3. Shandong Bluestar Dongda Chemical Industry Co.,Ltd.,Zibo 255028, China) Key words: PVC; polyurethane; thermoplastic material; crosslinking; cable compound
Abstract: The effects of plasticizing agent content, initiator content, auxiliary crosslinking agent con-tent, and thermoplastic polyurethane (TPU) content on the hardness, mechanical properties and thermal e longation of PVC/TPU system were studied in order to formulate cable compounds for automobiles. Tho wear resistance and aging resistance of PVC/TPU system were investigated. The results showed that: ① In the presence of auxiliary crosslinking agent TAIC, the initiator DCP can initiate the crosslinking reaction of PVC/TPU system, and the degree of crosslinking increased with the increase in DCP and TPU content. ② The optimal formula of crosslinked PVC/TPU cable compounds is as follows: PVC 100, calcium zinc stabilizer 8, TOTM 50, TAIC 3, DCP 0.2, TPU 30, antioxidant 0.8 parts and proper other additives. Qualified cable compounds for automobiles can be produced according to the formula.
热塑性聚氨酯(TPU)是一种性能极好的弹性体,具有优良的耐酸碱性、耐油性和力学性能,并且使用温度范围大,可作为PVC材料的增韧剂或改性剂{1]。TPU还能提高PVC材料的加工流动性,起到增塑效果(2)。但由于TPU价格较贵,且阻燃性较差,
其应用受到限制。PVC的牌号多,应用广,成本低,是一种重要的通用塑料。TPU与PVC共混,能有效降低TPU的成本,提高性能,扩大其应用范围;另一方面,TPU的加人能有效改善PVC的耐低温性能{"]。目前,TPU与PVC共混研究的报道较多,但
,【收稿日期】2014-01-10
【作者简介】孙春英(1979一),女,工程师,2001年毕业于山东理工大学化工学院,从事橡胶、塑料制品的研发生产工
作,目前在青岛科技大学读研究生。 20
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