CN108642898A - 一种新型交联pvc人造革及其制备方法 - Google Patents
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Abstract
本发明涉及复合材料技术领域,尤其涉及一种新型交联PVC人造革及其制备方法,所述人造革包括基底层和PVC层,所述的PVC层由下列质量份数的原料制备而成:聚氯乙烯树脂100份、增塑剂55‑95份、稳定剂2‑6份、碳酸钙5‑25份、交联剂0.5‑1.5份、发泡剂0‑2份、色料0‑20份;所述交联剂由双环戊二烯类交联剂和三聚氰胺组成。本发明人造革可以采用涂覆法和/或压延法工艺制备,制得的产品物理性能优异。
Description
技术领域
本发明涉及复合材料技术领域,尤其涉及一种新型交联PVC人造革及其制备方法。
背景技术
聚氯乙烯人造革(PVC革)是在织物上涂覆PVC树脂、增塑剂、稳定剂等助剂制成的糊,或者再覆合一层PVC膜,然后经一定的工艺过程加工制成的。制品强度高,加工容易,成本低廉。可做各种箱包、座套、衬里、杂物等。
在人造革的制备过程中,为了追求弹性、柔软度等效果,往往需要对聚氯乙烯进行改性,现有技术下,采用最多的改性方式主要为共混改性,即在树脂中添加各种改性剂,所添加的改性剂包括增塑剂、调色剂、填料、颜料、加工助剂、冲击改性剂等。
交联是指通过化学键(或物理力)把大分子链连接成三维空间网络的过程。人们对聚氯乙烯的交联曾做过广泛的研究,其目的是获得较好耐热变形性、耐溶剂性以及改进机械和电气性能(随着使用温度的提高)等。交联是可以提高聚氯乙烯的综合性能的一种改性方法。
因聚氯乙烯人造革属于软质PVC,常规的交联方法容易导致材料延展性变差,现有技术中鲜见有利用交联技术,尤其是化学交联技术对PVC进行改性的报道。
发明内容
本发明所要解决的技术问题是提供一种新型交联PVC人造革,使其具有更优异的强度和弹性。
本发明所要解决的另一个技术问题是提供一种新型交联PVC人造革的制备方法,使该方法过程可控,易于操作。
为了解决上述技术问题,本发明采用下列技术方案。
一种新型交联PVC人造革,包括基底层和PVC层,其特征在于所述的PVC层由符合下列质量比的原料制备而成:聚氯乙烯树脂100份、增塑剂55-95份、稳定剂2-6份、碳酸钙5-25份、交联剂0.5-1.5份、发泡剂0-2份、色料0-20份;所述交联剂由双环戊二烯类交联剂和三聚氰胺组成。
所述基底层选自针织或平织布。
优选的,所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;所述物质的质量比为:双环戊二烯二甲酸钠:三聚氰胺=1:0.5-1。
优选的,所述增塑剂选自邻苯二甲酸酯类、磷酸酯类、环氧类增塑剂中的一种或多种。
优选的,所述增塑剂由下列物质组成:邻苯二甲酸二辛酯、邻苯二甲酸二丁酯、磷酸三苯酯、环氧大豆油;所述物质的质量比为:邻苯二甲酸二辛酯:邻苯二甲酸二丁酯:磷酸三苯酯:环氧大豆油=1:0.2-0.5:0.1-0.2:0.1-0.2。
优选的,所述稳定剂选自有机锡、铅盐、有机锑、金属皂、稀土稳定剂中的一种或几种。
优选的,所述发泡剂选自偶氮二甲酰胺、碳酸盐类、异氰酸酯类中的一种或几种。
进一步优选的,PVC层由符合下列质量比的原料制备而成:聚氯乙烯树脂100份、增塑剂55-95份、稳定剂2-6份、碳酸钙5-25份、交联剂0.5-1.5份、发泡剂0-2份、色料0-20份;所述稳定剂由下列物质组成:硬脂酸钡、硬脂酸镉、甲基硫醇锡,其质量比为硬脂酸钡:硬脂酸镉:甲基硫醇锡=1:1:0.5;所述发泡剂为偶氮二甲酰胺。
一种新型交联PVC人造革的制备方法,其特征在于所述的方法是涂覆法和/或压延法。
进一步的,所述的压延法工艺为:将所述原料排入密炼机里进行混炼,混炼温度130℃,混炼时间200s,然后排出至开放式炼胶机上,依次通过两台开放式炼胶机在120℃的温度条件下进行塑炼15min后,输送至四辊压延机里压延成薄膜,压延机作业条件温度160℃,生产速度(30±20)m/min,成膜压力≥1T。
进一步的,所述的涂覆法工艺为:将所述原料在高速分散混合机里混合均匀,搅拌温度110℃-130℃,搅拌时间100-200s;糊涂布在离型纸上,经烘房干燥或者发泡,所述烘房温度为170℃-210℃。
需要说明的是,本发明所述的PVC层可以是单层的致密层(即非发泡层)或发泡层,也可以是由致密层和发泡层复合而成。
本发明的技术效果可以通过如下试验证明。
试验例本发明新型交联PVC人造革性能测试
供试材料下文实施例、对比例所制备的PVC人造革。
试验方法参照中华人民共和国轻工业标准QB/T4043-2010《汽车用聚氯乙烯人造革的方法》测试供试材料的拉伸强度、残留变形率、破裂强度。
试验结果见表1,结果表明,交联剂的加入,能显著提高PVC人造革的强度和弹性。
表1新型交联PVC人造革性能测试
具体实施方式
为了更好的阐述技术方案,下面结合具体实施方式对本发明作进一步的说明,但本发明所要求的保护范围不限于下列实施例。
实施例1新型交联PVC人造革(单致密层)
配方:
聚氯乙烯树脂100份、增塑剂55份、稳定剂2份、碳酸钙5份、交联剂0.5份、色料0.5份;
所述增塑剂由下列物质组成:邻苯二甲酸二辛酯、邻苯二甲酸二丁酯;其质量比为:邻苯二甲酸二辛酯:邻苯二甲酸二丁酯=1:0.2。
所述稳定剂为硬脂酸钡。
所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;其质量比为:双环戊二烯二甲酸钠:三聚氰胺的质量比为=1:0.5。
制备方法:
压延法
将所述原料排入密炼机里进行混炼,混炼温度130℃,混炼时间200s,然后排出至开放式炼胶机上,依次通过两台开放式炼胶机在120℃的温度条件下进行塑炼15min后,输送至四辊压延机里压延成薄膜,压延机作业条件温度160℃,生产速度(30±20)m/min,成膜压力≥1T。
将所述薄膜与针织布复合即得。
对比例1 PVC人造革(单致密层)
配方除不含交联剂外,余同实施例1。
制备方法:同实施例1。
实施例2新型交联PVC人造革(单致密层)
配方:
聚氯乙烯树脂100份、增塑剂95份、稳定剂6份、碳酸钙25份、交联剂1.5份;
所述增塑剂为邻苯二甲酸二辛酯。
所述稳定剂为甲基硫醇锡。
所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;其质量比为:双环戊二烯二甲酸钠:三聚氰胺的质量比为=1:1。
制备方法:
压延法
将所述原料排入密炼机里进行混炼,混炼温度130℃,混炼时间200s,然后排出至开放式炼胶机上,依次通过两台开放式炼胶机在120℃的温度条件下进行塑炼15min后,输送至四辊压延机里压延成薄膜,压延机作业条件温度160℃,生产速度(30±20)m/min,成膜压力≥1T。
将所述薄膜与针织布复合即得。
对比例2 PVC人造革(单致密层)
配方除不含交联剂外,余同实施例2。
制备方法:同实施例2。
实施例3新型交联PVC人造革(单致密层)
配方:
聚氯乙烯树脂100份、增塑剂70份、稳定剂3份、碳酸钙20份、交联剂1份、色料20份;
其特征在于所述增塑剂由下列物质组成:邻苯二甲酸二辛酯、邻苯二甲酸二丁酯、磷酸三苯酯、环氧大豆油;所述物质的质量比为:邻苯二甲酸二辛酯:邻苯二甲酸二丁酯:磷酸三苯酯:环氧大豆油=1:0.2:0.1:0.1。
所述稳定剂由下列物质组成:硬脂酸钡、硬脂酸镉、甲基硫醇锡,其质量比为硬脂酸钡:硬脂酸镉:甲基硫醇锡=1:1:0.5
所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;其质量比为:双环戊二烯二甲酸钠:三聚氰胺的质量比为=1:0.6。
制备方法:
涂覆法
将所述原料在高速分散混合机里混合均匀,搅拌温度110℃,搅拌时间100s;糊涂布在离型纸上,经烘房干燥,所述烘房温度为170℃。
将制得的PVC层与针织布复合即得。
对比例3 PVC人造革(单致密层)
配方除不含交联剂外,余同实施例3。
制备方法:同实施例3。
实施例4新型交联PVC人造革(单泡沫层)
配方:
聚氯乙烯树脂100份、增塑剂55份、稳定剂2份、碳酸钙5份、交联剂0.5份、发泡剂1份、色料0.5份;
所述增塑剂由下列物质组成:邻苯二甲酸二辛酯、邻苯二甲酸二丁酯;其质量比为:邻苯二甲酸二辛酯:邻苯二甲酸二丁酯=1:0.2。
所述稳定剂为硬脂酸钡。
所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;其质量比为:双环戊二烯二甲酸钠:三聚氰胺的质量比为=1:0.5。
所述发泡剂为碳酸盐类。
制备方法:
压延法
将所述原料排入密炼机里进行混炼,混炼温度130℃,混炼时间200s,然后排出至开放式炼胶机上,依次通过两台开放式炼胶机在120℃的温度条件下进行塑炼15min后,输送至四辊压延机里压延成薄膜,压延机作业条件温度160℃,生产速度(30±20)m/min,成膜压力≥1T,所述薄膜经烘房发泡,所述烘房温度为200℃。
将所述发泡后的PVC与针织布复合即得。
对比例4 PVC人造革(单发泡层)
配方除不含交联剂外,余同实施例4。
制备方法:同实施例4。
实施例5新型交联PVC人造革(单发泡层)
配方:
聚氯乙烯树脂100份、增塑剂95份、稳定剂6份、碳酸钙25份、交联剂1.5份、发泡剂2份;
所述增塑剂为邻苯二甲酸二辛酯。
所述稳定剂为甲基硫醇锡。
所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;其质量比为:双环戊二烯二甲酸钠:三聚氰胺的质量比为=1:1。
所述发泡剂为异氰酸酯类。
制备方法:
涂覆法
将所述原料在高速分散混合机里混合均匀,搅拌温度110℃,搅拌时间100s;糊涂布在离型纸上,经烘房发泡,所述烘房温度为180℃。
将制得的PVC层与针织布复合即得。
对比例5 PVC人造革(单发泡层)
配方除不含交联剂外,余同实施例5。
制备方法:同实施例5。
实施例6新型交联PVC人造革(单发泡层)
配方:
聚氯乙烯树脂100份、增塑剂70份、稳定剂3份、碳酸钙20份、交联剂1份、发泡剂1.5份、色料2份;
其特征在于所述增塑剂由下列物质组成:邻苯二甲酸二辛酯、邻苯二甲酸二丁酯、磷酸三苯酯、环氧大豆油;所述物质的质量比为:邻苯二甲酸二辛酯:邻苯二甲酸二丁酯:磷酸三苯酯:环氧大豆油=1:0.5:0.2:0.2。
所述稳定剂由下列物质组成:硬脂酸钡、硬脂酸镉、甲基硫醇锡,其质量比为硬脂酸钡:硬脂酸镉:甲基硫醇锡=1:1:0.5
所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;其质量比为:双环戊二烯二甲酸钠:三聚氰胺的质量比为=1:0.6。
所述发泡剂为偶氮二甲酰胺。
制备方法:
涂覆法
将所述原料在高速分散混合机里混合均匀,搅拌温度120℃,搅拌时间160s;糊涂布在离型纸上,经烘房发泡,所述烘房温度为190℃。
将制得的PVC层与平织布复合即得。
对比例6 PVC人造革(单发泡层)
配方除不含交联剂外,余同实施例6。
制备方法:同实施例6。
实施例7新型交联PVC人造革(双层)
致密层配方
聚氯乙烯树脂100份、增塑剂50份、稳定剂3份、碳酸钙20份、交联剂1份、色料0.2份;
其特征在于所述增塑剂由下列物质组成:邻苯二甲酸二辛酯、邻苯二甲酸二丁酯、磷酸三苯酯、环氧大豆油;所述物质的质量比为:邻苯二甲酸二辛酯:邻苯二甲酸二丁酯:磷酸三苯酯:环氧大豆油=1:0.3:0.2:0.1。
所述稳定剂由下列物质组成:硬脂酸钡、硬脂酸镉、甲基硫醇锡,其质量比为硬脂酸钡:硬脂酸镉:甲基硫醇锡=1:1:0.5
所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;其质量比为:双环戊二烯二甲酸钠:三聚氰胺的质量比为=1:0.6。
发泡层配方
聚氯乙烯树脂100份、增塑剂65份、稳定剂2份、碳酸钙20份、交联剂1份、发泡剂2份;
其特征在于所述增塑剂由下列物质组成:邻苯二甲酸二辛酯、邻苯二甲酸二丁酯、磷酸三苯酯、环氧大豆油;所述物质的质量比为:邻苯二甲酸二辛酯:邻苯二甲酸二丁酯:磷酸三苯酯:环氧大豆油=1:0.3:0.2:0.2。
所述稳定剂由下列物质组成:硬脂酸钡、硬脂酸镉、甲基硫醇锡,其质量比为硬脂酸钡:硬脂酸镉:甲基硫醇锡=1:1:0.5
所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;其质量比为:双环戊二烯二甲酸钠:三聚氰胺的质量比为=1:0.5。
所述发泡剂为偶氮二甲酰胺。
制备方法
将所述致密层原料排入密炼机里进行混炼,混炼温度130℃,混炼时间200s,然后排出至开放式炼胶机上,依次通过两台开放式炼胶机在120℃的温度条件下进行塑炼15min后,输送至四辊压延机里压延成薄膜,压延机作业条件温度160℃,生产速度(30±20)m/min,成膜压力≥1T。
将所述发泡层原料在高速分散混合机里混合均匀,搅拌温度120℃,搅拌时间150s,糊涂布在离型纸上,经烘房发泡后,再涂覆一次粘结剂,之后把针织布(基布)和涂覆过粘结剂的材料进行复合,经过再一次烘干后,把离型纸剥离,得到复合有基布的有发泡层结构的基材,其中烘房温度190℃,速度(15±10)m/min,基材经冷却后卷取成大卷;
通过分别加热基材和致密层薄膜,使其达到热熔状态,并在此状态下快速热贴合。
对比例7 PVC人造革(双层)
配方除不含交联剂外,余同实施例7。
制备方法:同实施例7。
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,根据技术方案及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 (9)
1.一种新型交联PVC人造革,包括基底层和PVC层,其特征在于所述的PVC层由下列质量份数的原料制备而成:聚氯乙烯树脂100份、增塑剂55-95份、稳定剂2-6份、碳酸钙5-25份、交联剂0.5-1.5份、发泡剂0-2份、色料0-20份;所述交联剂由双环戊二烯类交联剂和三聚氰胺组成。
2.根据权利要求1所述一种新型交联PVC人造革,其特征在于所述交联剂由下列物质组成:双环戊二烯二甲酸钠、三聚氰胺;所述物质的质量比为:双环戊二烯二甲酸钠:三聚氰胺=1:0.5-1。
3.根据权利1-2所述一种新型交联PVC人造革,其特征在于所述增塑剂选自邻苯二甲酸酯类、磷酸酯类、环氧类增塑剂中的一种或多种。
4.根据权利3所述一种新型交联PVC人造革,其特征在于所述增塑剂由下列物质组成:邻苯二甲酸二辛酯、邻苯二甲酸二丁酯、磷酸三苯酯、环氧大豆油;所述物质的质量比为:邻苯二甲酸二辛酯:邻苯二甲酸二丁酯:磷酸三苯酯:环氧大豆油=1:0.2-0.5:0.1-0.2:0.1-0.2。
5.根据权利1-4所述一种新型交联PVC人造革,其特征在于所述稳定剂选自有机锡、铅盐、有机锑、金属皂、稀土稳定剂中的一种或几种。
6.根据权利1-5所述一种新型交联PVC人造革,其特征在于所述发泡剂选自偶氮二甲酰胺、碳酸盐类、异氰酸酯类中的一种或几种。
7.根据权利要求1所述一种新型交联PVC人造革的制备方法,其特征在于所述的方法是涂覆法和/或压延法。
8.根据权利要求7所述一种新型交联PVC人造革的制备方法,其特征在于所述的压延法工艺为:将所述原料排入密炼机里进行混炼,混炼温度130℃,混炼时间200s,然后排出至开放式炼胶机上,依次通过两台开放式炼胶机在120℃的温度条件下进行塑炼15min后,输送至四辊压延机里压延成薄膜,所述压延机作业条件温度160℃,生产速度(30±20)m/min,成膜压力≥1T。
9.根据权利要求7、8所述一种新型交联PVC人造革的制备方法,其特征在于所述的涂覆法工艺为:将所述原料在高速分散混合机里混合均匀,搅拌温度110℃-130℃,搅拌时间100-200s;糊涂布在离型纸上,经烘房干燥或者发泡,所述烘房温度为170℃-210℃。
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Application publication date: 20181012 |
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RJ01 | Rejection of invention patent application after publication |