CN108457092A - 水性聚氨酯皮革及其制备方法 - Google Patents

水性聚氨酯皮革及其制备方法 Download PDF

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CN108457092A
CN108457092A CN201711362456.2A CN201711362456A CN108457092A CN 108457092 A CN108457092 A CN 108457092A CN 201711362456 A CN201711362456 A CN 201711362456A CN 108457092 A CN108457092 A CN 108457092A
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周建
颜玉荣
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Abstract

本发明公开了一种水性聚氨酯皮革及其制备方法，包括非织造布基底，自所述基底表面依次包括水性聚氨酯膜层、离型纸层。制备方法，包括步骤：(1)将水性聚氨酯、发泡助剂和流平剂混匀，得到混合乳液；(2)将部分步骤(1)中得到的混合乳液在离型纸上铺膜层、干燥，得到离型纸膜层；(3)将其余部分步骤(1)中得到的混合乳液搅拌发泡，得到发泡乳液；(4)将步骤(3)中得到的发泡乳液分别在离型纸膜层和非织造布基底上铺膜层、干燥，将离型纸复合膜层和非织造布基底膜层贴合并干燥，得到所述水性聚氨酯皮革。本发明的水性聚氨酯皮革具有良好的透气性和透湿性；制备过程中无毒、环保，不会造成二次污染。

Description

水性聚氨酯皮革及其制备方法
技术领域
本发明涉及聚氨酯领域，尤其涉及一种水性聚氨酯皮革及其制备方法。
背景技术
我国合成革年产量占世界年总产量的80％以上，其中超纤革是主要发展方向。超纤革真正实现了模拟天然皮革的结构形态，在强度、舒适性、透气透湿性、耐化学性、抗皱性、耐磨性、可加工适应性以及质量均一等诸方面优于天然皮革，是替代天然皮革的最佳产品。目前超纤革主要以海岛型(聚乙烯/聚酰胺6或聚酯/水溶性聚酯)超细纤维非织造布为增强材料，以聚氨酯为基体，在减量和制革过程中，会不可避免地造成甲苯(PhMe，开纤过程)、二甲基甲酰胺(DMF，制革过程)等有机溶剂污染和残留，带来严重的环境危害，严重制约了我国超纤革产业的发展，已成为行业发展的瓶颈问题。
发明内容
发明目的：本发明提供了一种水性聚氨酯皮革及其制备方法，该水性聚氨酯皮革具有良好的透气性和透湿性，该制备方法简单易实现，避免了现有技术中造成环境污染的问题。
技术方案：本发明的水性聚氨酯皮革，包括非织造布基底，自所述基底表面依次包括水性聚氨酯膜层、离型纸层。
上述水性聚氨酯皮革的制备方法，包括以下步骤：
(1)将水性聚氨酯、发泡助剂和流平剂混匀，得到混合乳液；
(2)将部分步骤(1)中得到的混合乳液在离型纸上铺0.15-0.25mm膜层，并在30-70℃条件下干燥，得到离型纸膜层；
(3)将其余部分步骤(1)中得到的混合乳液搅拌，直至发泡率为130-170％，得到发泡乳液；
(4)将步骤(3)中得到的发泡乳液分别在步骤(2)中得到的离型纸膜层和非织造布基底上铺0.2-0.4mm和0.05-0.15mm的膜层，并在30-70℃条件下干燥，得到离型纸复合膜层和非织造布基底膜层，将离型纸复合膜层和非织造布基底膜层贴合并干燥，得到所述水性聚氨酯皮革。
步骤(1)中，所述水性聚氨酯为芳香族和脂肪族类中的一种或两种。
步骤(1)中，还加入稳泡助剂。
所述水性聚氨酯、发泡助剂和流平剂的质量比为46-47:1:0.7-0.8。水性聚氨酯以水为分散介质，具有无毒、低VOC等环保方面的优点，已成为合成革行业传统溶剂型聚氨酯的理想替代品。
有益效果：1、本发明的水性聚氨酯皮革具有良好的透气性和透湿性；2、本发明的制备方法简单、易操作，条件温和、易实现；3、制备过程中无毒、环保，不会造成二次污染；4、原料来源简单，成本低。
具体实施方式
实施例1
水性聚氨酯皮革的制备方法，包括以下步骤：
(1)将46g芳香族水性聚氨酯、1g发泡助剂月桂基磺化琥珀酸单酯二钠、0.7g稳泡助剂硬酯酸铵和0.7g流平剂混匀，得到混合乳液；
(2)将部分步骤(1)中得到的混合乳液在离型纸上铺0.15mm膜层，并在30℃条件下干燥，得到离型纸膜层；
(3)将其余部分步骤(1)中得到的混合乳液搅拌，直至发泡率为130％，得到发泡乳液；
(4)将步骤(3)中得到的发泡乳液分别在步骤(2)中得到的离型纸膜层和非织造布基底上铺0.2mm和0.05mm的膜层，并在30℃条件下干燥，得到离型纸复合膜层和非织造布基底膜层，将离型纸复合膜层和非织造布基底膜层贴合并干燥，得到所述水性聚氨酯皮革。
实施例2
水性聚氨酯皮革的制备方法，包括以下步骤：
(1)将46.5脂肪族水性聚氨酯、1g发泡助剂月桂基磺化琥珀酸单酯二钠和0.75g流平剂混匀，得到混合乳液；
(2)将部分步骤(1)中得到的混合乳液在离型纸上铺0.2mm膜层，并在50℃条件下干燥，得到离型纸膜层；
(3)将其余部分步骤(1)中得到的混合乳液搅拌，直至发泡率为150％，得到发泡乳液；
(4)将步骤(3)中得到的发泡乳液分别在步骤(2)中得到的离型纸膜层和非织造布基底上铺0.3mm和0.1mm的膜层，并在30℃条件下干燥，得到离型纸复合膜层和非织造布基底膜层，将离型纸复合膜层和非织造布基底膜层贴合并干燥，得到所述水性聚氨酯皮革。
实施例3
水性聚氨酯皮革的制备方法，包括以下步骤：
(1)将47g脂肪族水性聚氨酯、1g发泡助剂月桂基磺化琥珀酸单酯二钠、0.8g稳泡助剂硬酯酸铵和0.8g流平剂混匀，得到混合乳液；
(2)将部分步骤(1)中得到的混合乳液在离型纸上铺0.25mm膜层，并在70℃条件下干燥，得到离型纸膜层；
(3)将其余部分步骤(1)中得到的混合乳液搅拌，直至发泡率为170％，得到发泡乳液；
(4)将步骤(3)中得到的发泡乳液分别在步骤(2)中得到的离型纸膜层和非织造布基底上铺0.4mm和0.15mm的膜层，并在70℃条件下干燥，得到离型纸复合膜层和非织造布基底膜层，将离型纸复合膜层和非织造布基底膜层贴合并干燥，得到所述水性聚氨酯皮革。

Claims (5)

1.一种水性聚氨酯皮革，其特征在于：包括非织造布基底，自所述基底表面依次包括水性聚氨酯膜层、离型纸层。
2.上述水性聚氨酯皮革的制备方法，其特征在于，包括以下步骤：
(1)将水性聚氨酯、发泡助剂和流平剂混匀，得到混合乳液；
(2)将部分步骤(1)中得到的混合乳液在离型纸上铺0.15-0.25mm膜层，并在30-70℃条件下干燥，得到离型纸膜层；
(3)将其余部分步骤(1)中得到的混合乳液搅拌，直至发泡率为130-170％，得到发泡乳液；
(4)将步骤(3)中得到的发泡乳液分别在步骤(2)中得到的离型纸膜层和非织造布基底上铺0.2-0.4mm和0.05-0.15mm的膜层，并在30-70℃条件下干燥，得到离型纸复合膜层和非织造布基底膜层，将离型纸复合膜层和非织造布基底膜层贴合并干燥，得到所述水性聚氨酯皮革。
3.根据权利要求2所述的制备方法，其特征在于：步骤(1)中，所述水性聚氨酯为芳香族和脂肪族类中的一种或两种。
4.根据权利要求2所述的制备方法，其特征在于：步骤(1)中，还加入稳泡助剂。
5.根据权利要求2所述的制备方法，其特征在于：所述水性聚氨酯、发泡助剂和流平剂的质量比为46-47:1:0.7-0.8。
CN201711362456.2A 2017-12-18 2017-12-18 水性聚氨酯皮革及其制备方法 Withdrawn CN108457092A (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102296466A (zh) * 2011-08-15 2011-12-28 浙江科一合成革有限公司 超细纤维合成革以及生产方法
CN202688743U (zh) * 2012-03-12 2013-01-23 广州市宏伟皮革有限公司 一种水性生态湿法合成革
CN203160034U (zh) * 2013-01-10 2013-08-28 东莞市宏庆皮革制品有限公司 一种体育用品用水性聚氨酯皮革
CN103437197A (zh) * 2013-08-31 2013-12-11 浙江五洲实业有限公司 水性透气革
CN103556487A (zh) * 2013-08-31 2014-02-05 浙江五洲实业有限公司 水性装饰革

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102296466A (zh) * 2011-08-15 2011-12-28 浙江科一合成革有限公司 超细纤维合成革以及生产方法
CN202688743U (zh) * 2012-03-12 2013-01-23 广州市宏伟皮革有限公司 一种水性生态湿法合成革
CN203160034U (zh) * 2013-01-10 2013-08-28 东莞市宏庆皮革制品有限公司 一种体育用品用水性聚氨酯皮革
CN103437197A (zh) * 2013-08-31 2013-12-11 浙江五洲实业有限公司 水性透气革
CN103556487A (zh) * 2013-08-31 2014-02-05 浙江五洲实业有限公司 水性装饰革

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