CN115595799A - 含有橡胶成分的耐光老化优异的聚烯烃人造革基材及人造革 - Google Patents

含有橡胶成分的耐光老化优异的聚烯烃人造革基材及人造革 Download PDF

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CN115595799A
CN115595799A CN202110774131.5A CN202110774131A CN115595799A CN 115595799 A CN115595799 A CN 115595799A CN 202110774131 A CN202110774131 A CN 202110774131A CN 115595799 A CN115595799 A CN 115595799A
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李民
许桥
蔡相成
李庆北
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Abstract

本发明公开了一种含有橡胶成分耐光老化优异的聚烯烃人造革基材及人造革，所述的人造革基材及人造革从上到下依次包括耐光老化聚烯烃层和基布层，其中耐光老化聚烯烃层中增加适量的含双键的橡胶成分，通过合适的方式形成交联结构而提高耐光老化性能，同时添加一定量的紫外线吸收剂、光稳定剂和光屏蔽剂。该人造革基材及人造革，特别是浅色革耐光老化优异等特性，可广泛用于汽车内饰等领域。

Description

含有橡胶成分的耐光老化优异的聚烯烃人造革基材及人造革
技术领域
本发明涉及人造革技术领域，尤其涉及一种含有橡胶成分的耐光老化优异的聚烯烃人造革基材及人造革。
背景技术
在汽车内饰中广泛使用热塑性聚烯烃弹性体TPO人造革，其优点在于，具有良好的热力学性能，不含卤素，低散发，无增塑剂，轻量化等特性。成为新型的汽车内饰材料，为汽车厂商提供了汽车内饰材料新的解决方案。近年来，随着对汽车内饰革性能要求的不断提升，需要对聚烯烃人造革进行不断改性来满足其性能要求。
橡胶在室温下富有弹性，在很多领域中得到广泛应用，特别是乙丙橡胶，是橡胶制品工业中重要的原材料，因其主链的饱和结构特征，而具有优异的耐天候、耐臭氧、耐热、耐水解、耐酸碱老化以及优良的电绝缘性和弹性等，广泛应用于汽车领域、建筑领域、工业制品、塑料改性和电线电缆领域等。
热塑性聚烯烃弹性体TPO本身没有空间网络结构，而耐光老化性能一般。而橡胶在实际使用中通常为交联结构，所以其耐光老化性能优异。如何将两者的优势结合成为新型人造革的研究重点之一。
发明内容
本发明的目的是克服了上述现有技术的缺点，提供一种含有橡胶成分耐光老化优异的聚烯烃人造革基材，其特征在于，所述的人造革基材及人造革从上到下依次包括耐光老化聚烯烃层和基布层，耐光老化聚烯烃层为交联的聚烯烃层。
较佳地，按重量份数计，所述的耐光老化聚烯烃层由以下成分组成聚烯烃100份，橡胶10～100份，紫外线吸收剂0.01～3份，光稳定剂0.01～3份，光屏蔽剂0.05～10份以及其它助剂和填料。
优选地，按重量份数计，所述的耐光老化聚烯烃层由以下成分组成聚烯烃100份，橡胶20～80份，紫外线吸收剂0.03～1份，光稳定剂0.03～0.5份，光屏蔽剂0.1～5份以及其它助剂和填料。
较佳地，所述聚烯烃包括聚乙烯、乙烯与α-烯烃共聚物、聚丙烯、丙烯与α-烯烃共聚物中的一种或几种；优选聚乙烯、乙烯与α-烯烃共聚物、聚丙烯中的一种。
较佳地，所述的橡胶为含碳碳双键的橡胶，选自天然橡胶(NR)、三元乙丙橡胶(EPDM)、苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)、苯乙烯-异戊二烯-苯乙烯嵌段共聚物(SIS)中的一种及一种以上的组合。
较佳地，所述的紫外吸收剂选自水杨酸酯类、二苯甲酮类、苯并三唑类、取代丙烯腈类、三嗪类等一种及一种以上的组合。
优选地，所述的紫外吸收剂为苯并三唑类。
较佳地，所述的光稳定剂选自自由基捕获剂。
优选地，所述的光稳定剂为受阻胺类衍生物。
较佳地，所述的光屏蔽剂包括炭黑、二氧化钛、氧化锌、锌钡等无机颜料和酞菁蓝、酞菁绿等有机颜料的一种及一种以上的组合。
较佳地，所述的耐光老化聚烯烃层交联的聚烯烃层，其交联度为30％～90％。
具体实施方式
为了能够更清楚地描述本发明的技术内容，下面结合具体实施例来进行进一步的描述。
本发明提供了提供一种含有橡胶成分耐光老化优异的聚烯烃人造革基材及人造革，其特征在于，所述的人造革基材及人造革从上到下依次包括耐光老化聚烯烃层和基布层，其中耐光老化聚烯烃层为交联的聚烯烃层。聚烯烃层中橡胶成分的双键交联，双键有利于基材在合适条件下更容易形成交联结构。交联的方法可以采用合适的交联办法，热交联、辐射交联等。同时添加一定量的紫外线吸收剂、光稳定剂和光屏蔽剂。该人造革基材及人造革，特别是浅色革耐光老化优异等特性。耐光老化烯烃层的配方如表一所示，用于以下各实施例的聚烯烃选自：
聚丙烯：无规聚丙烯，牌号LG化学R3410；
聚乙烯：低密度聚乙烯LDPE，牌号LG化学FB3050；
乙烯-丁烯共聚物：牌号LG化学LC168；
乙烯-辛烯共聚物：牌号陶氏化学8411。
用于以下各实施例的橡胶选自：EPDM，牌号陶氏3745P；紫外吸收剂选自牌号：天津利安隆新材料股份有限公司THASORB UV-234；光稳定剂选自牌号天津利安隆新材料股份有限公司THASORB UV-944。光屏蔽剂中只有实施例8为深色系人造革，选自牌号卡博特炭黑N660，实施例1～7和比较例3选自杜邦钛白粉R105都为浅色系人造革；
其中实施例1聚烯烃为聚丙烯。实施例2聚烯烃为聚乙烯。实施例3聚烯烃为50份聚乙烯和50份乙烯-丁烯共聚物的混合物。实施例4聚烯烃为50份乙烯-丁烯共聚物和50份乙烯-辛烯共聚物的混合物。实施例5聚烯烃为乙烯-丁烯共聚物。实施例6、7、8聚烯烃为乙烯-辛烯共聚物。
为保证数据对比的一致性实施例和比较例中其它助剂和填料的添加量相同，样品的厚度统一为0.3mm。
为性能比较方便，实施例中的交联办法全部采用辐射交联，比较例3未辐射交联。
表一 耐光老化聚烯烃层各组分重量份数表
Figure BDA0003153761350000031
实施例1～8和比较例1～3制得的含有橡胶成分耐光老化优异的聚烯烃人造革基材中耐光老化聚烯烃层的交联度及该耐光老化人造革光照色牢度等级数据如下表二所示：按照GB/T 29848-2018-5.5.3中二甲苯萃取法测试聚烯烃弹性体粘合层的交联度。按照GB/T 8427-2019纺织品色牢度试验耐人造光色牢度氙弧,测试条件为暴晒循环A1.
表二 含有橡胶成分耐光老化优异的聚烯烃人造革的性能参数表
Figure BDA0003153761350000032
Figure BDA0003153761350000041
从表二数据可以看出，采用了该发明中的含有橡胶成分耐光老化优异的聚烯烃人造革基材及人造革，耐光老化聚烯烃层通过交联，聚烯烃层中橡胶成分的双键使基材更容易形成交联，同时添加一定量的紫外线吸收剂、光稳定剂和光屏蔽剂。该人造革基材及人造革，特别是浅色革耐光老化优异等特性。
在此说明书中，本发明已参照其特定的实施例作了描述。但是，很显然仍可以作出各种修改和变换而不背离本发明的精神和范围。因此，说明书被认为是说明性的而非限制性的。

Claims (7)

1.一种含有橡胶成分耐光老化优异的聚烯烃人造革基材，其特征在于，所述的人造革基材及人造革从上到下依次包括耐光老化聚烯烃层和基布层，所述聚烯烃层为交联聚烯烃层，交联度为30～90％。按重量份数计，所述的耐光老化聚烯烃层由以下成分组成聚烯烃100份，橡胶10～100份，紫外线吸收剂0.01～3份，光稳定剂0.01～3份，光屏蔽剂0.05～10份以及其它助剂和填料。
2.根据权利要求1所述的含有橡胶成分耐光老化优异的聚烯烃人造革基材，其特征在于，所述聚烯烃包括聚乙烯、乙烯与α-烯烃共聚物、聚丙烯、丙烯与α-烯烃共聚物中的一种或几种。
3.根据权利要求1所述的含有橡胶成分耐光老化优异的聚烯烃人造革基材，其特征在于，所述的橡胶为含碳碳双键的橡胶，选自天然橡胶(NR)、三元乙丙橡胶(EPDM)、苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)、苯乙烯-异戊二烯-苯乙烯嵌段共聚物(SIS)中的一种及一种以上的组合。
4.根据权利要求1所述的含有橡胶成分耐光老化优异的聚烯烃人造革基材，其特征在于，所述的紫外吸收剂选自水杨酸酯类、二苯甲酮类、苯并三唑类、取代丙烯腈类、三嗪类等一种及一种以上的组合。
5.根据权利要求1所述的含有橡胶成分耐光老化优异的聚烯烃人造革基材，其特征在于，所述的光稳定剂选自自由基捕获剂，优选为受阻胺类衍生物。
6.根据权利要求1所述的含有橡胶成分耐光老化优异的聚烯烃人造革基材，其特征在于，所述的光屏蔽剂包括炭黑、二氧化钛、氧化锌、锌钡等无机颜料和酞菁蓝、酞菁绿等有机颜料的一种及一种以上的组合。
7.一种含有橡胶成分耐光老化优异的聚烯烃人造革，其特征在于，所述的人造革包括权利要求1至5中任一项所述的含有橡胶成分耐光老化优异的聚烯烃人造革基材。
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