CN114806143B - 一种耐低温柔软pu阻隔膜及复合防水贴条 - Google Patents

一种耐低温柔软pu阻隔膜及复合防水贴条 Download PDF

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CN114806143B
CN114806143B CN202210328485.1A CN202210328485A CN114806143B CN 114806143 B CN114806143 B CN 114806143B CN 202210328485 A CN202210328485 A CN 202210328485A CN 114806143 B CN114806143 B CN 114806143B
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陈伯兴
梁坤焕
梁锋
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Guangdong Yingtong New Material Co ltd
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Abstract

本发明提供了一种耐低温柔软PU阻隔膜及复合防水贴条，包括以下重量份的组分：有机硅改性聚氨酯预聚物60～80份；固化剂10～30份；扩链剂5‑10份；偶联剂0.5～5份；流平剂0.2～1份；聚碳化二亚胺0.5～3份；抗氧剂0.1～1份；紫外线吸收剂0.3～1份。本发明提供了一种防风、防水服用的耐低温柔软PU阻隔层及复合防水贴条。该复合防水贴条耐低温柔软、弹性好、具有良好的耐水洗、耐水压，对两层防风、防水服的涂层粘接强度大。将该复合防水贴条用于两层防风、防水服的制造中，可以有效改善0℃及以下低温环境胶带变硬的问题，提高消费者的穿着体验，具有很好的应用前景。

Description

一种耐低温柔软PU阻隔膜及复合防水贴条
技术领域
本发明属于高分子材料技术领域，具体涉及一种耐低温柔软PU阻隔膜及复合防水贴条。
背景技术
目前随着人们生活水平的提高，对自身健康越来越关注，人们对更高生活品质的向往和追求，导致户外运动的兴起，具有防风、透气、透湿、保暖功能的防风、防水服装受到人们的青睐，深受消费者的喜爱。
在现有技术中，防风、防水服的制造通常有2种方式：一种是将防风、防水服的面料过缝纫机或类似的缝纫设备缝合在一起而制成，不压胶条，这类服装防风、防水效果不好，长时间在风雨环境中有漏风、漏水问题；第二种方式就是在第一种方式的缝线骨位上压防水贴条，从而达到防风、防水、保温的功能。
现有复合防水贴条结构是阻隔膜+热熔胶，阻隔膜主要分PU、TPU和PVC三类，粘接层一般是TPU热熔胶和橡胶，对两层防水面料PU、亲水PU、PVC、PA、PTFE、TPE涂层有较好的粘接效果，从而令衣服达到防风、防水、保温的功能。现有复合防水贴条，在0℃及以下低温环境中复合防水贴条会明显变硬，PVC阻隔层甚至脆化容易开裂，导致两层防风、防水服穿着体验变差，和影响防风、防水服的防风、防水功能，给消费者使用带来诸多不便。
发明内容
本发明的目的在于克服现有技术存在的不足之处而提供一种防风、防水服用的耐低温柔软PU阻隔层及复合防水贴条。
为实现上述目的，本发明采取的技术方案为：
一种耐低温柔软PU阻隔膜，包括以下重量份的组分：有机硅改性聚氨酯预聚物60～80份；固化剂10～30份；扩链剂5-10份；偶联剂0.5～5份；流平剂0.2～1份；聚碳化二亚胺0.5～3份；抗氧剂0.1～1份；紫外线吸收剂0.3～1份。
发明人通过研究发现，该技术方案制得的PU阻隔膜耐低温柔软、弹性好，具有良好的耐水洗、耐水压的性能。
优选地，所述有机硅改性聚氨酯预聚物为有机硅多元醇-多异氰酸酯预聚物；所述有机硅多元醇-多异氰酸酯预聚物中的有机硅多元醇为有机硅聚酯多元醇或有机硅聚醚多元醇；所述有机硅多元醇数均分子量500-4000g/mol；所述有机硅多元醇-多异氰酸酯预聚物中的多异氰酸酯为芳香族异氰酸酯或脂肪族异氰酸酯。
优选地，所述有机硅改性聚氨酯预聚物的有机硅多元醇：多异氰酸酯重量份配比为(100-120)：(40-80)。
优选地，所述有机硅改性聚氨酯预聚物的粘度为5000～20000mPa.s。
更优选地，所述有机硅改性聚氨酯预聚物的粘度为7000～15000mPa.s。
优选地，所述B组分固化剂选自芳香族异氰酸酯和脂肪族异氰酸酯中的至少一种；所述B组分固化剂的粘度为500～1000mPa.s；优选为600～800mPa.s。
优选地，所述扩链剂选自乙二醇、1，4-丁二醇、新戊二醇、1，6-己二醇、丙三醇、己三醇中的至少一种。
优选地，所述偶联剂选自γ-缩水甘油醚氧丙基三甲氧基硅烷(KH-560)、3-氨基丙基三乙氧基硅烷(KH-550)、γ-氨乙基氨丙基三甲氧基硅烷(KH-792)、乙烯基三甲氧基硅烷(A-171)、辛基硅烷齐聚物(6608)、氨基硅烷齐聚物(6652)中的至少一种；更优选γ-缩水甘油醚氧丙基三甲氧基硅烷(KH-560)、3-氨基丙基三乙氧基硅烷(KH-550)、辛基硅烷齐聚物(6608)中的任意一种或它们至少两种的混合物。
所述流平剂选自二苯基聚硅氧烷和甲基苯基聚硅氧烷中的至少一种；所述抗氧剂选自抗氧剂1010、抗氧剂1076、抗氧剂168、抗氧剂215、抗氧剂TPP中的至少一种；所述紫外线吸收剂选自UV328、UV531、UV5411、UV329中的至少一种。更优选UV328、UV5411。
本发明还提供一种复合防水贴条，包括上述的耐低温柔软PU阻隔膜及TPU胶黏剂，所述TPU胶黏剂覆盖在PU阻隔膜的一个表面上。
优选地，所述TPU胶黏剂选自聚酯型聚氨酯、聚己内酯型聚氨酯、聚碳酸酯型聚氨酯、聚醚型聚氨酯、共聚醚型聚氨酯中的一种或至少两种，通过共混流延机挤出而成；更优选聚已内酯型聚氨酯、聚醚型聚氨酯中的的一种或两种材料共混流延机挤出而成。所述TPU胶黏剂的溶体质量流动速率为15～35g/10min，溶体粘度为6000～15000mPa.s，厚度为0.03～0.1mm。
优选地，所述耐低温柔软PU阻隔膜的厚度为0.05～0.2mm，优选厚度0.05～0.1mm。
本发明还提供上述复合防水贴条的制备方法，包括以下步骤：
(1)反应釜中加入有机硅多元醇，90-120℃、抽真空搅拌2-4H，降温到70-90℃，加入多异氰酸酯，抽真空搅拌，当预聚物粘度在5000～20000mPa.s，降温停止反应得到有机硅改性聚氨酯预聚物；
(2)有机硅改性聚氨酯预聚物、固化剂、扩链剂、偶联剂、流平剂、聚碳化二亚胺、抗氧剂、紫外线吸收剂搅拌均匀，抽真空；然后将混合物涂布在离型纸上，在100～150℃烘干5～15min；然后在50～80℃下熟化24h，去除离型纸，得到PU阻隔膜；
(3)将TPU胶黏剂流延挤出，热复合在PU阻隔膜的单面上，得到所述复合防水贴条。
本发明的有益效果在于：本发明提供了一种防风、防水服用的耐低温柔软PU阻隔层及复合防水贴条。该复合防水贴条耐低温柔软、弹性好、具有良好的耐水洗、耐水压，对两层防风、防水服的涂层粘接强度大。将该复合防水贴条用于两层防风、防水服的制造中，可以有效改善0℃及以下低温环境胶带变硬的问题，提高消费者的穿着体验，具有很好的应用前景。
具体实施方式
为更好的说明本发明的目的、技术方案和优点，下面将结合具体实施例对本发明作进一步说明。
在本发明中，除特别声明，所述的份均为重量份。
实施例1
(1)将反应釜中加入100份有机硅聚醚多元醇(数均分子量1000g/mol)，110℃、抽真空搅拌3H，降温到80℃，加入50份脂肪多异氰酸酯，抽真空搅拌，当预聚物粘度在7000mPa.s，降温停止反应得到有机硅改性聚氨酯预聚物。
(2)将60份以上有机硅改性聚氨酯预聚物(粘度为7000mPa.s)、10份芳香族异氰酸酯(粘度为500mPa.s)、8份乙二醇、0.5份γ-缩水甘油醚氧丙基三甲氧基硅烷(KH-560)、0.2份二苯基聚硅氧烷、0.5份聚碳化二亚胺、0.1份抗氧剂1010、0.3份UV328搅拌均匀，抽真空；然后将混合物涂布在离型纸上，在100℃烘干15min；然后在50±5℃下熟化24h，去除离型纸，得到PU阻隔膜，厚度为0.05mm；将TPU胶黏剂(聚已内酯型聚氨酯，溶体质量流动速率为20g/10min，溶体粘度为10000mPa.s)流延挤出，热复合在PU阻隔膜的单面上，TPU胶黏剂的厚度为0.05mm,得到所述复合防水贴条。
实施例2
(1)将反应釜中加入100份有机硅聚酯多元醇(数均分子量1500g/mol)，110℃、抽真空搅拌3H，降温到80℃，加入60份脂肪多异氰酸酯，抽真空搅拌，当预聚物粘度在10000mPa.s，降温停止反应得到有机硅改性聚氨酯预聚物。
(2)将70份以上有机硅改性聚氨酯预聚物(粘度为10000mPa.s)、20份脂肪族异氰酸酯(粘度为600mPa.s)、10份1，4-丁二醇、2份γ-缩水甘油醚氧丙基三甲氧基硅烷(KH-560)、0.5份二苯基聚硅氧烷、2份聚碳化二亚胺、0.5份抗氧剂1010、0.5份UV328搅拌均匀，抽真空；然后将混合物涂布在离型纸上，在120℃烘干15min；然后在70±5℃下熟化24h，去除离型纸，得到PU阻隔膜，厚度为0.1mm；将TPU胶黏剂(聚已内酯型聚氨酯，溶体质量流动速率为30g/10min，溶体粘度为15000mPa.s)流延挤出，热复合在PU阻隔膜的单面上，TPU胶黏剂的厚度为0.05mm,得到所述复合防水贴条。
实施例3
(1)将反应釜中加入50份机硅聚醚多元醇(数均分子量2000g/mol)，50份有机硅聚酯多元醇(数均分子量1000g/mol)，110℃、抽真空搅拌3H，降温到80℃，加入60份芳香族多异氰酸酯，抽真空搅拌，当预聚物粘度在15000mPa.s，降温停止反应得到有机硅改性聚氨酯预聚物。
(2)将80份聚以上有机硅改性聚氨酯预聚物(粘度为15000mPa.s)、30份脂肪族异氰酸酯(粘度为800mPa.s)、新戊二醇10份、5份辛基硅烷齐聚物(6608)、1份甲基苯基聚硅氧烷、3份聚碳化二亚胺、1份抗氧剂168、1份UV531搅拌均匀，抽真空；然后将混合物涂布在离型纸上，在150℃烘干20min；然后在80±5℃下熟化24h，去除离型纸，得到PU阻隔膜，厚度为0.2mm；将TPU胶黏剂(聚已内酯型聚氨酯，溶体质量流动速率为30g/10min，溶体粘度为15000mPa.s)流延挤出，热复合在PU阻隔膜的单面上，TPU胶黏剂的厚度为0.1mm,得到所述复合防水贴条。
实施例4
(1)将反应釜中加入100份机硅聚醚多元醇(数均分子量3000g/mol)，110℃、抽真空搅拌3H，降温到80℃，加入50份脂肪族多异氰酸酯，抽真空搅拌，当预聚物粘度在10000mPa.s，降温停止反应得到有机硅改性聚氨酯预聚物。
(2)将70份以上有机硅改性聚氨酯预聚物(粘度为10000mPa.s)、20份芳香族异氰酸酯(粘度为1000mPa.s)、0.5份3-氨基丙基三乙氧基硅烷(KH-550)、0.2份二苯基聚硅氧烷、2份聚碳化二亚胺、0.5份抗氧剂1076、0.5份UV5411搅拌均匀，抽真空；然后将混合物涂布在离型纸上，在120℃烘干15min；然后在70±5℃下熟化24h，去除离型纸，得到PU阻隔膜，厚度为0.1mm；将TPU胶黏剂(聚已内酯型聚氨酯，溶体质量流动速率为30g/10min，溶体粘度为15000mPa.s)流延挤出，热复合在PU阻隔膜的单面上，TPU胶黏剂的厚度为0.05mm,得到所述复合防水贴条。
性能测试
对实施例1～4进行低温性能测试和耐水洗测试，测试复合防水贴条的的防水性能。
将实施例1-4制备的耐低温柔软复合防水贴条及普通的防水贴条用热风机在温度500℃、压力0.04mPa、风量0.07mPa、速度8m/min压带两层防水面料十字骨位和一字骨位，冷却120min后按照以下测试标准进行测试，测试结果如表1所示。
对实施例1-2制备的复合防水贴条及普通的防水贴条进行性能测定，测试方法如下：
1)耐水洗性防水测试(十字骨位)：水洗按照ISO 6330要求，在40℃洗衣机中水洗20次，每次60分钟，静水压按照ISO811要求测试4000mmH2O/2min。
2)低温曲折耐寒试验外观和防水(一字骨位)：低温曲折耐寒按照GB/T20991-2007要求，温度0℃、-5℃、-10℃、-20℃测试4000次。静水压按照ISO811要求测试4000mmH20/2min。
表1防水贴条的性能测试结果
Figure BDA0003576429450000061
Figure BDA0003576429450000071
上述结果表明，本发明得到的耐低温柔软复合防水贴条，产品耐低温柔软、弹性好、具有良好的耐水洗、耐水压，对两层防风、防水服的涂层粘接强度大。将该复合防水贴条用于两层防风、防水服的制造中，可以有效改善0℃及以下低温环境复合防水贴条变硬的问题，提高消费者的穿着体验，具有很好的应用前景。
最后所应当说明的是，以上实施例仅用以说明本发明的技术方案而非对本发明保护范围的限制，尽管参照较佳实施例对本发明作了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和范围。

Claims (7)

1.一种复合防水贴条，其特征在于，包括耐低温柔软PU阻隔膜及TPU胶黏剂，所述TPU胶黏剂覆盖在PU阻隔膜的一个表面上；
所述TPU胶黏剂选自聚己内酯型聚氨酯、聚碳酸酯型聚氨酯、聚醚型聚氨酯、共聚醚型聚氨酯中的至少一种；所述TPU胶黏剂的溶体质量流动速率为15～35g/10min，溶体粘度为6000～15000mPa.s，厚度为0.03～0.1mm；
所述耐低温柔软PU阻隔膜，包括以下重量份的组分：有机硅改性聚氨酯预聚物60～80份；固化剂10～30份；扩链剂5-10份；偶联剂0.5～5份；流平剂0.2～1份；聚碳化二亚胺0.5～3份；抗氧剂0.1～1份；紫外线吸收剂0.3～1份；
所述有机硅改性聚氨酯预聚物为有机硅多元醇-多异氰酸酯预聚物；所述有机硅多元醇-多异氰酸酯预聚物中的有机硅多元醇为有机硅聚酯多元醇或有机硅聚醚多元醇；所述有机硅多元醇数均分子量500-4000g/mol；所述有机硅多元醇-多异氰酸酯预聚物中的多异氰酸酯为芳香族异氰酸酯或脂肪族异氰酸酯；
所述有机硅改性聚氨酯预聚物中的有机硅多元醇：多异氰酸酯重量份配比为(100-120)：(40-80)。
2.根据权利要求1所述的复合防水贴条，其特征在于，所述有机硅改性聚氨酯预聚物的粘度为5000～20000mPa.s。
3.根据权利要求1所述的复合防水贴条，其特征在于，所述固化剂选自芳香族异氰酸酯和脂肪族异氰酸酯中的至少一种；所述固化剂的粘度为500～1000mPa.s。
4.根据权利要求1所述的复合防水贴条，其特征在于，所述扩链剂选自乙二醇、1，4-丁二醇、新戊二醇、1，6-己二醇、丙三醇、己三醇中的至少一种。
5.根据权利要求1所述的复合防水贴条，其特征在于，所述偶联剂选自γ-缩水甘油醚氧丙基三甲氧基硅烷、3-氨基丙基三乙氧基硅烷、γ-氨乙基氨丙基三甲氧基硅烷、乙烯基三甲氧基硅烷、氨基硅烷齐聚物中的至少一种；所述流平剂选自二苯基聚硅氧烷和甲基苯基聚硅氧烷中的至少一种；所述抗氧剂选自抗氧剂1010、抗氧剂1076、抗氧剂168、抗氧剂215、抗氧剂TPP中的至少一种；所述紫外线吸收剂选自UV328、UV531、UV5411、UV329中的至少一种。
6.根据权利要求1所述的复合防水贴条，其特征在于，所述耐低温柔软PU阻隔膜的厚度为0.05～0.2mm。
7.一种如权利要求1～6任一项所述的复合防水贴条的制备方法，其特征在于，包括以下步骤：
(1)反应釜中加入有机硅多元醇，90-120℃、抽真空搅拌2-4H，降温到70-90℃，加入多异氰酸酯，抽真空搅拌，当预聚物粘度在5000～20000mPa.s，降温停止反应得到有机硅改性聚氨酯预聚物；
(2)有机硅改性聚氨酯预聚物、固化剂、扩链剂、偶联剂、流平剂、聚碳化二亚胺、抗氧剂、紫外线吸收剂搅拌均匀，抽真空；然后将混合物涂布在离型纸上，在100～150℃烘干5～15min；然后在50～80℃下熟化24h，去除离型纸，得到PU阻隔膜；
(3)将TPU胶黏剂流延挤出，热复合在PU阻隔膜的单面上，得到所述复合防水贴条。
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