CN110591274A - 一种耐高温tpe热塑性弹性体 - Google Patents

一种耐高温tpe热塑性弹性体 Download PDF

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CN110591274A
CN110591274A CN201910857399.8A CN201910857399A CN110591274A CN 110591274 A CN110591274 A CN 110591274A CN 201910857399 A CN201910857399 A CN 201910857399A CN 110591274 A CN110591274 A CN 110591274A
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thermoplastic elastomer
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tpe
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夏玉洁
曹春林
王江玉
吴章柱
方毅明
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Anhui Zhongding Rubber and Plastic Products Co Ltd
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Abstract

本发明公开了一种耐高温TPE热塑性弹性体,其原料按重量份包括:聚氨酯弹性体40‑60份,TPE热塑性弹性体80‑100份,聚烯烃树脂20‑40份,填料30‑50份,加工油10‑15份,润滑剂1‑3份,防老剂0.5‑1.5份,2,5‑二甲基‑2,5二叔丁基过氧化己烷0.5‑1份,相容剂5‑10份。本发明选用适宜原料相互配合,使得本发明不仅有良好的机械性能,而且能改善TPE热塑性弹性体的高温老化性能,降低其内生热损耗。

Description

一种耐高温TPE热塑性弹性体
技术领域
本发明涉及热塑性弹性体技术领域,尤其涉及一种耐高温TPE热塑性弹性体。
背景技术
TPE热塑性弹性体材料是一种具有橡胶的高弹性,高强度,高回弹性,又具有可注塑加工的特征的材料。TPE热塑性弹性体材料具有优异的耐老化性能、耐候性、耐压缩变形性和优异的力学性能,可以作为减震垫、减震块等各种减震元件,但TPE热塑性弹性体材料在高温时的耐老化性能较低,内生热损耗高,需要对其耐高温性能进行改善。
发明内容
基于背景技术存在的技术问题,本发明提出了一种耐高温TPE热塑性弹性体及其制备方法,本发明选用适宜原料相互配合,使得本发明不仅有良好的机械性能,而且能改善TPE热塑性弹性体的高温老化性能,降低其内生热损耗。
本发明提出的一种耐高温TPE热塑性弹性体,其原料按重量份包括:聚氨酯弹性体40-60份,TPE热塑性弹性体80-100份,聚烯烃树脂20-40份,填料30-50份,加工油10-15份,润滑剂1-3份,防老剂0.5-1.5份,2,5-二甲基-2,5二叔丁基过氧化己烷0.5-1份,相容剂5-10份。
优选地,聚氨酯弹性体为1,5-萘二异氰酸酯与聚乙二酸乙二醇酯反应得到预聚体,再经1,4丁二醇扩链制得。
优选地,聚氨酯弹性体中,异氰酸酯基与羟基的起始摩尔比为2.5-3:1。
优选地,聚氨酯弹性体中,硬段的质量分数为30-35wt%。
优选地,TPE为苯乙烯类热塑性弹性体。
优选地,苯乙烯类热塑性弹性体为三嵌段共聚物,其由聚苯乙烯封端,中间段为乙烯支化聚二烯,其玻璃化转变温度为-35至20℃。
优选地,聚烯烃树脂为高密度聚乙烯、共聚聚丙烯。
优选地,聚烯烃树脂的熔融指数为2-10g/10min。
优选地,相容剂为马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯。
优选地,马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯的重量比为1:1-2。
优选地,防老剂为抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺。
优选地,抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺的重量比为1:0.2-0.3:0.5-0.7。
优选地,加工油为石蜡油,其CA≤5,CN≤40,CP≥65。
优选地,润滑剂为聚乙烯蜡、二甲基硅油中的至少一种。
优选地,填料为硅烷偶联剂改性二氧化硅。
本发明的制备方法为:将聚氨酯弹性体、TPE热塑性弹性体、聚烯烃树脂、填料、加工油、润滑剂、防老剂、相容剂混匀,挤出造粒得到母料;将母料与2,5-二甲基-2,5二叔丁基过氧化己烷混匀,经动态硫化得到耐高温TPE热塑性弹性体。
本发明选用1,5-萘二异氰酸酯与聚乙二酸乙二醇酯作为聚氨酯弹性体的原料,萘的引入可以增加本发明的耐热性能;通过限定适宜的异氰酸酯基与羟基的起始摩尔比、适宜的硬段含量,使得聚氨酯弹性体形成规整有序的硬段结构,使得聚氨酯弹性体在具有良好耐热性的同时,还具有良好的机械性能和较低的内生热损耗;上述聚氨酯弹性体与适宜种类的TPE热塑性弹性体、聚烯烃树脂,并以适宜比例相互配合,使得本发明具有良好机械性能、耐高温性能和较低的内生热损耗;马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯以适宜比例相互配合,可以促进聚氨酯弹性体、TPE热塑性弹性体、聚烯烃树脂均匀分散,进一步增加本发明的机械性能;选用抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺以适宜比例相互配合,可以进一步改善本发明的耐高温老化性能;选择适宜的润滑剂与石蜡油相互配合,增加本发明的加工性能,硅烷偶联剂改性二氧化硅可以进一步增加本发明的机械性能;本发明选用适宜原料相互配合,使得本发明不仅有良好的机械性能,而且能改善TPE热塑性弹性体的高温老化性能,降低其内生热损耗。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种耐高温TPE热塑性弹性体,其原料按重量份包括:聚氨酯弹性体40份,TPE热塑性弹性体100份,聚烯烃树脂20份,填料50份,加工油10份,润滑剂3份,防老剂0.5份,2,5-二甲基-2,5二叔丁基过氧化己烷1份,相容剂5份;
其中,聚氨酯弹性体为1,5-萘二异氰酸酯与聚乙二酸乙二醇酯反应得到预聚体,再经1,4丁二醇扩链制得,其中,异氰酸酯基与羟基的起始摩尔比为3:1,硬段的质量分数为30wt%;
TPE为苯乙烯类热塑性弹性体,苯乙烯类热塑性弹性体为三嵌段共聚物,其由聚苯乙烯封端,中间段为乙烯支化聚二烯,其玻璃化转变温度为20℃;
聚烯烃树脂为高密度聚乙烯、共聚聚丙烯,聚烯烃树脂的熔融指数为2g/10min。
实施例2
一种耐高温TPE热塑性弹性体,其原料按重量份包括:聚氨酯弹性体60份,TPE热塑性弹性体80份,聚烯烃树脂40份,硅烷偶联剂改性二氧化硅30份,石蜡油15份,聚乙烯蜡1份,防老剂1.5份,2,5-二甲基-2,5二叔丁基过氧化己烷0.5份,相容剂10份;
其中,聚氨酯弹性体为1,5-萘二异氰酸酯与聚乙二酸乙二醇酯反应得到预聚体,再经1,4丁二醇扩链制得,其中,异氰酸酯基与羟基的起始摩尔比为2.5:1,硬段的质量分数为35wt%;
TPE为苯乙烯类热塑性弹性体,苯乙烯类热塑性弹性体为三嵌段共聚物,其由聚苯乙烯封端,中间段为乙烯支化聚二烯,其玻璃化转变温度为-35℃;
聚烯烃树脂为高密度聚乙烯、共聚聚丙烯,聚烯烃树脂的熔融指数为10g/10min;
相容剂为马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯,其中,马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯的重量比为1:1;
防老剂为抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺,其中,抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺的重量比为1:0.3:0.5;
石蜡油的CA≤5,CN≤40,CP≥65。
实施例3
一种耐高温TPE热塑性弹性体,其原料按重量份包括:聚氨酯弹性体45份,TPE热塑性弹性体95份,聚烯烃树脂25份,硅烷偶联剂改性二氧化硅45份,石蜡油11份,聚乙烯蜡2.5份,防老剂0.8份,2,5-二甲基-2,5二叔丁基过氧化己烷0.8份,相容剂6份;
其中,聚氨酯弹性体为1,5-萘二异氰酸酯与聚乙二酸乙二醇酯反应得到预聚体,再经1,4丁二醇扩链制得,其中,异氰酸酯基与羟基的起始摩尔比为2.8:1,硬段的质量分数为31wt%;
TPE为苯乙烯类热塑性弹性体,苯乙烯类热塑性弹性体为三嵌段共聚物,其由聚苯乙烯封端,中间段为乙烯支化聚二烯,其玻璃化转变温度为10℃;
聚烯烃树脂为高密度聚乙烯、共聚聚丙烯,聚烯烃树脂的熔融指数为4g/10min;
相容剂为马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯,其中,马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯的重量比为1:1.8;
防老剂为抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺,其中,抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺的重量比为1:0.22:0.65;
石蜡油的CA≤5,CN≤40,CP≥65。
实施例4
一种耐高温TPE热塑性弹性体,其原料按重量份包括:聚氨酯弹性体50份,TPE热塑性弹性体90份,聚烯烃树脂30份,硅烷偶联剂改性二氧化硅40份,石蜡油12份,润滑剂2份,防老剂1份,2,5-二甲基-2,5二叔丁基过氧化己烷0.7份,相容剂7份;
其中,聚氨酯弹性体为1,5-萘二异氰酸酯与聚乙二酸乙二醇酯反应得到预聚体,再经1,4丁二醇扩链制得,其中,异氰酸酯基与羟基的起始摩尔比为2.7:1,硬段的质量分数为32wt%;
TPE为苯乙烯类热塑性弹性体,苯乙烯类热塑性弹性体为三嵌段共聚物,其由聚苯乙烯封端,中间段为乙烯支化聚二烯,其玻璃化转变温度为5℃;
聚烯烃树脂为高密度聚乙烯、共聚聚丙烯,聚烯烃树脂的熔融指数为6g/10min;
相容剂为马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯,其中,马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯的重量比为1:1.5;
防老剂为抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺,其中,抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺的重量比为1:0.25:0.6;
石蜡油的CA≤5,CN≤40,CP≥65;
润滑剂为聚乙烯蜡、二甲基硅油。
检测实施例1-4的性能,结果如下:
由上表可以看出,本发明具有良好的机械性能,耐高温老化性能好,且Tanδ较低,内生热损耗低。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。

Claims (10)

1.一种耐高温TPE热塑性弹性体,其特征在于,其原料按重量份包括:聚氨酯弹性体40-60份,TPE热塑性弹性体80-100份,聚烯烃树脂20-40份,填料30-50份,加工油10-15份,润滑剂1-3份,防老剂0.5-1.5份,2,5-二甲基-2,5二叔丁基过氧化己烷0.5-1份,相容剂5-10份。
2.根据权利要求1所述耐高温TPE热塑性弹性体,其特征在于,聚氨酯弹性体为1,5-萘二异氰酸酯与聚乙二酸乙二醇酯反应得到预聚体,再经1,4丁二醇扩链制得;优选地,聚氨酯弹性体中,异氰酸酯基与羟基的起始摩尔比为2.5-3:1;优选地,聚氨酯弹性体中,硬段的质量分数为30-35wt%。
3.根据权利要求1或2所述耐高温TPE热塑性弹性体,其特征在于,TPE为苯乙烯类热塑性弹性体;优选地,苯乙烯类热塑性弹性体为三嵌段共聚物,其由聚苯乙烯封端,中间段为乙烯支化聚二烯,其玻璃化转变温度为-35至20℃。
4.根据权利要求1-3任一项所述耐高温TPE热塑性弹性体,其特征在于,聚烯烃树脂为高密度聚乙烯、共聚聚丙烯;优选地,聚烯烃树脂的熔融指数为2-10g/10min。
5.根据权利要求1-4任一项所述耐高温TPE热塑性弹性体,其特征在于,相容剂为马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯;优选地,马来酸酐接枝相容剂、苯乙烯-丙烯腈接枝甲基丙烯酸缩水甘油酯的重量比为1:1-2。
6.根据权利要求1-5任一项所述耐高温TPE热塑性弹性体,其特征在于,防老剂为抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺。
7.根据权利要求6所述耐高温TPE热塑性弹性体,其特征在于,抗氧剂1076、双硬脂酰基硫代双丙酸脂、二烷基二苯胺的重量比为1:0.2-0.3:0.5-0.7。
8.根据权利要求1-7任一项所述耐高温TPE热塑性弹性体,其特征在于,加工油为石蜡油,其CA≤5,CN≤40,CP≥65。
9.根据权利要求1-8任一项所述耐高温TPE热塑性弹性体,其特征在于,润滑剂为聚乙烯蜡、二甲基硅油中的至少一种。
10.根据权利要求1-9任一项所述耐高温TPE热塑性弹性体,其特征在于,填料为硅烷偶联剂改性二氧化硅。
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CN104559012A (zh) * 2013-10-09 2015-04-29 天津市杰欣利工贸有限公司 一种耐高温型tpe材料
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