CN112760076A - 一种无溶剂双组份铝塑蒸煮胶及其制备方法 - Google Patents
一种无溶剂双组份铝塑蒸煮胶及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种耐高温的无溶剂双组份聚氨酯胶粘剂，通过引进高官能团聚醚和合成合适的聚酯多元醇，提高胶水的耐温性及抗介质性能，同时解决了铝塑外层难题，这种无溶剂双组份铝塑蒸煮胶粘剂是由A胶和B胶组成，A胶是由聚酯多元醇、液化MDI和聚醚多元醇反应而成，B胶是由含有高官能团聚醚多元醇、偶联剂和蓖麻油组成，A胶和B胶配比为100:45。
Description
技术领域：
本发明涉及一种无溶剂双组份铝塑蒸煮胶及其制备方法。
背景技术：
无溶剂复合胶水由于其明显的环保性、安全性及成本优势，在国内外得到 了迅速发展和应用。随着无溶剂技术的不断提高，普通的无溶剂胶水，已经不 能满足市场需求。使用普通胶水，外层复合任需使用溶剂型聚氨酯粘合剂，产 品的环保性、安全性大打折扣。
发明内容：
本发明的目的是提供一种耐高温的无溶剂双组份聚氨酯胶粘剂，通过引进高官能团聚醚和合成合适的聚酯多元醇，提高胶水的耐温性及抗介质性能，同时解决了铝塑外层难题。
一种无溶剂双组份铝塑蒸煮胶粘剂是由A胶和B胶组成，其特征在于：A胶是由聚酯多元醇、液化MDI和聚醚多元醇反应而成，B胶是由含有高官能团聚醚多元醇、偶联剂和蓖麻油组成，A胶和B胶配比为100:45。
在所述无溶剂双组份铝塑蒸煮胶中，所述的聚酯多元醇是由含有小分子二元酸与二元醇缩聚而成。
在所述无溶剂双组份铝塑蒸煮胶中，所述的小分子二元酸为己二酸、间苯二甲酸、癸二酸、对苯二甲酸、邻苯二甲酸酐中的一种或两种的混合物。优选间苯二甲酸、己二酸或癸二酸，所述的二元醇为乙二醇、二乙二醇、新戊二醇、 1,2丙二醇，甲基丙二醇、甘油、环己烷二甲醇、1,4-丁二醇、1,6-己二醇中的一种或两种的混合物。优选环己烷二甲醇和1,6-己二醇。
在所述无溶剂双组份铝塑蒸煮胶中，所述的聚醚多元醇为：平均分子量 1000的聚氧化丙烯二醇，分子量400～2000的聚氧化丙烯四醇或分子量400～500 的聚氧化丙烯五醇。
在所述无溶剂双组份铝塑蒸煮胶中，所述的硅烷偶联剂为：γ―氨丙基三乙氧基硅烷、γ―氨丙基三甲氧基硅烷、N-(2-氨乙基)-3-氨丙基三甲氧基硅烷、 N-(2-氨乙基)-3-氨丙基三乙氧基硅烷、苯胺甲基三乙氧基硅烷、3-甲基丙烯酰氧丙基三甲氧基硅烷中的一种或两种以上的混合物。
所述无溶剂双组份铝塑蒸煮胶的制备方法如下：
(1)聚酯多元醇的制备：
在带有温度计、搅拌器、球式冷却器、氮气密封管的四口烧瓶中，加入间苯二甲酸120.6g，己二酸318.1g，葵二酸146.8g，环乙烷二甲醇704.7g,1.6- 己二醇352.4g和0.2～0.25g钛酸四丁酯催化剂，搅拌均匀，然后缓慢升温，在160℃～230℃下反应14小时后，取样测酸价，若酸价小于20mgKOH/g，则酯化合格，酯化合格后进行缩聚反应，在温度220～230℃条件下，在-0.1Mpa下抽真空5小时，得到酸价≤1mgKOH/g，羟值112±5mgKOH/g的聚酯多元醇。
(2)A胶的制备
将上述酯化缩聚后得到的聚酯多元醇100g，分子量1000聚氧化丙烯二醇及 100g，在120℃条件下真空脱水2小时，至体系含水量少于0.05％，降温至40 ℃,加入4，4-二苯基甲烷二异氰酸酯(MDI)228.6g与251.6g反应，,温度控制在80℃±5℃，反应5小时，得粘度在5000～6000mPa.s/25℃，NCO＝14～15％的主胶。
B胶的制备：
取分子量400～2000的聚氧化丙烯四醇或分子量400～500的聚氧化丙烯五醇300g，蓖麻油500g和偶联剂4g，升温至120℃，真空-0.1MPa条件下，脱水2小时，检测体系含水量少于0.05％为合格。
具体实施方式：
下面通过如下实例来对本发明进行进一步的详细说明：
实施例1：
A胶的制备：
(1)聚酯多元醇的制备：
在带有温度计、搅拌器、球式冷却器、氮气密封管的四口烧瓶中，加入间苯二甲酸120.6g，己二酸318.1g，葵二酸146.8g，环乙烷二甲醇704.7g,1.6- 己二醇352.4g和0.2～0.25g钛酸四丁酯催化剂，搅拌均匀，然后缓慢升温，在160℃～230℃下反应14小时后，取样测酸价，若酸价小于20mgKOH/g，则酯化合格，酯化合格后进行缩聚反应，在温度220～230℃条件下，在-0.1Mpa下抽真空5小时，得到酸价≤1mgKOH/g，羟值112±5mgKOH/g的聚酯多元醇。
(2)A胶的制备，将上述酯化缩聚后得到的聚酯多元醇100g，分子量1000 聚氧化丙烯二醇及100g，在120℃条件下真空脱水2小时，至体系含水量少于 0.05％，降温至40℃,加入4，4-二苯基甲烷二异氰酸酯(MDI)228.6g反应，, 温度控制在80℃±5℃，反应5小时，得粘度在6000mPa.s/25℃，NCO＝14％的主胶。
B胶的制备：
取分子量400～2000的聚氧化丙烯四醇300g，蓖麻油500g和偶联剂4g，升温至120℃，真空-0.1MPa条件下，脱水2小时，检测体系含水量少于0.05％为合格。
将上述A胶与B胶按100:45配比，复合PET/AL/CPP，在50℃烘箱中熟化 48小时的强度为2.5N(外层)/5N(内层)。
而用市场上其他厂家复的膜剥离强度如下：
说明我公司产品加入高官能团聚醚和合成合适的聚酯多元醇，提高胶水的耐温性，同时解决了铝塑外层难题。
实施例2：
A胶的制备：
(1)聚酯多元醇的制备：
在带有温度计、搅拌器、球式冷却器、氮气密封管的四口烧瓶中，加入间苯二甲酸120.6g，己二酸318.1g，葵二酸146.8g，环乙烷二甲醇704.7g,1.6- 己二醇352.4g和0.2～0.25g钛酸四丁酯催化剂，搅拌均匀，然后缓慢升温，在160℃～230℃下反应14小时后，取样测酸价，若酸价小于20mgKOH/g，则酯化合格，酯化合格后进行缩聚反应，在温度220～230℃条件下，在-0.1Mpa下抽真空5小时，得到酸价≤1mgKOH/g，羟值112±5mgKOH/g的聚酯多元醇。
(2)A胶的制备，将上述酯化缩聚后得到的聚酯多元醇100g，分子量1000 聚氧化丙烯二醇及100g，在120℃条件下真空脱水2小时，至体系含水量少于 0.05％，降温至40℃,加入4，4-二苯基甲烷二异氰酸酯(MDI)251.6g反应，, 温度控制在80℃±5℃，反应5小时，得粘度在5000mPa.s/25℃，NCO＝15％的主胶。
B胶的制备：
取分子量400～500的聚氧化丙烯五醇300g，蓖麻油500g和偶联剂4g，升温至120℃，真空-0.1MPa条件下，脱水2小时，检测体系含水量少于0.05％为合格。
将上述A胶与B胶按100:45配比，复合PET/AL/CPP，在50℃烘箱中熟化 48小时的强度为2.5N(外层)/5N(内层)。
而用市场上其他厂家复的膜剥离强度如下：
说明我公司产品加入高官能团聚醚和合成合适的聚酯多元醇，提高胶水的耐温性，同时解决了铝塑外层难题。
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，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求书的保护范围为准。
Claims (2)
1.一种无溶剂双组份铝塑蒸煮胶粘剂，其特征在于：由A胶和B胶组成，A胶是由聚酯多元醇、液化MDI和聚醚多元醇反应而成，B胶是由含有高官能团聚醚多元醇、偶联剂和蓖麻油组成，A胶和B胶配比为100:45，
在所述无溶剂双组份铝塑蒸煮胶中，所述的聚酯多元醇是由含有小分子二元酸与二元醇缩聚而成；
在所述无溶剂双组份铝塑蒸煮胶中，所述的小分子二元酸为己二酸、间苯二甲酸、癸二酸、对苯二甲酸、邻苯二甲酸酐中的一种或两种的混合物。优选间苯二甲酸、己二酸或癸二酸，所述的二元醇为乙二醇、二乙二醇、新戊二醇、1,2丙二醇，甲基丙二醇、甘油、环己烷二甲醇、1,4-丁二醇、1,6-己二醇中的一种或两种的混合物。优选环己烷二甲醇和1,6-己二醇；
在所述无溶剂双组份铝塑蒸煮胶中，所述的聚醚多元醇为：平均分子量1000的聚氧化丙烯二醇，分子量400～2000的聚氧化丙烯四醇或分子量400～500的聚氧化丙烯五醇；
在所述无溶剂双组份铝塑蒸煮胶中，所述的硅烷偶联剂为：γ―氨丙基三乙氧基硅烷、γ―氨丙基三甲氧基硅烷、N-(2-氨乙基)-3-氨丙基三甲氧基硅烷、N-(2-氨乙基)-3-氨丙基三乙氧基硅烷、苯胺甲基三乙氧基硅烷、3-甲基丙烯酰氧丙基三甲氧基硅烷中的一种或两种以上的混合物。
2.根据权利要求1所述无溶剂双组份铝塑蒸煮胶的制备方法，其制备方法是：
(1)聚酯多元醇的制备：
在带有温度计、搅拌器、球式冷却器、氮气密封管的四口烧瓶中，加入间苯二甲酸120.6g，己二酸318.1g，葵二酸146.8g，环乙烷二甲醇704.7g,1.6-己二醇352.4g和0.2～0.25g钛酸四丁酯催化剂，搅拌均匀，然后缓慢升温，在160℃～230℃下反应14小时后，取样测酸价，若酸价小于20mgKOH/g，则酯化合格，酯化合格后进行缩聚反应，在温度220～230℃条件下，在-0.1Mpa下抽真空5小时，得到酸价≤1mgKOH/g，羟值112±5mgKOH/g的聚酯多元醇；
(2)A胶的制备，将上述酯化缩聚后得到的聚酯多元醇100g，分子量1000聚氧化丙烯二醇及100g，在120℃条件下真空脱水2小时，至体系含水量少于0.05％，降温至40℃,加入4，4-二苯基甲烷二异氰酸酯(MDI)228.6g与251.6g反应，,温度控制在80℃±5℃，反应5小时，得粘度在5000～6000mPa.s/25℃，NCO＝14～15％的主胶；
B胶的制备：
取分子量400～2000的聚氧化丙烯四醇或分子量400～500的聚氧化丙烯五醇300g，蓖麻油500g和偶联剂4g，升温至120℃，真空-0.1MPa条件下，脱水2小时，检测体系含水量少于0.05％为合格。
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