CN106085188A - 两种水性可剥聚氨酯分散体的制备方法 - Google Patents

两种水性可剥聚氨酯分散体的制备方法 Download PDF

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CN106085188A
CN106085188A CN201610422035.3A CN201610422035A CN106085188A CN 106085188 A CN106085188 A CN 106085188A CN 201610422035 A CN201610422035 A CN 201610422035A CN 106085188 A CN106085188 A CN 106085188A
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孟江燕
傅念清
王云英
陈芳芳
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Abstract

两种水溶性可剥聚氨酯分散体的制备方法，步骤为：（1）将异佛尔酮二异氰酸酯，加入到聚四氢呋喃醚二醇和[(N,N‑二乙基)‑(N’,N’‑二羟乙基)]丙酸胺的混合物中，（2）将1,6‑六亚甲基二异氰酸酯，加入上述混合物中，85±5℃下反应1小时；降温至50℃以下，再加入异佛尔酮二异氰酸酯，（3）将步骤（1）和（2）的反应物分别降至室温，加入对氯苯丙氨酸，混合均匀；将混合液加入到饱和碳气体酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至80℃反应。（4）降至室温分别得到固体份含量30%的水性可剥聚氨酯分散体。本发明的优点是：通过氮丙啶类和聚碳化二亚胺类固化剂固化得到的膜层具有可剥性，用于加工、运输过程的保护。

Description

两种水性可剥聚氨酯分散体的制备方法
技术领域
本发明属于高分子材料技术领域，具体涉及两种水性可剥聚氨酯树脂分散体的制备方法。
背景技术
聚氨酯树脂具有优异的性能而在涂料和胶粘剂领域广泛应用。传统聚氨酯树脂含有有机溶剂，而对环境有害；另外热固型聚氨酯的固化要消耗大量的热能，不利于低碳环保。因此开发低污染、低能耗的室温固化水性聚氨酯树脂成为发展方向和研究热点。
水性聚氨酯树脂分为水溶液型、分散体型和乳液型三类，目前市场上的水性聚氨酯基本上都是分散体型和乳液型。水性聚氨酯分散体与其他水性高分子材料相比具有更多的优点，主要有：（1）分子结构具有可设计性，可制备不同性能特点的分散体；（2）异氰酸基团分散在水中而无游离的异氰酸，无毒性；（3）固化的聚氨酯涂层具有良好的力学性能、耐环境介质性能；（4）施工方便，可室温固化也可加温固化；（5）有机溶剂含量少甚至没有，符合挥发性有机化合物排放要求。
经过四十年来的发展，水性聚氨酯分散体已广泛应用于皮革、纺织、家具、塑料、汽车等领域。由于目前国内还没有具有可剥性水性聚氨酯分散体，所形成的具有可剥性临时保护的涂膜，对精密产品的临时性保护的应用还没有应用。例如，聚甲基丙烯酸甲酯用作光学功能材料，在加工、装配、运输过程中需要临时保护，采用可剥涂膜是有效的方法之一。具有可剥性的水性聚氨酯分散体无有机溶剂，则不会对聚甲基丙烯酸甲酯产生溶解作用而影响光学性能，因此特别适合用作临时性保护涂层。
本发明制备的两种水性聚氨酯分散体，不含有机溶剂，通过氮丙啶类和聚碳化二亚胺类固化剂进行室温或者加温固化，形成的膜层具有可剥性。
发明内容
本发明的目的在于提供两种水性聚氨酯可剥树脂的分散体，加入固化剂固化后的膜层具有可剥性，尤其涉及以异佛尔酮二异氰酸酯、1,6-六亚甲基二异氰酸酯和异佛尔酮二异氰酸酯为原料制备的水性可剥聚氨酯树脂分散体的方法。
本发明是这样实现的，其特征是制备方法步骤为：两种水性可剥聚氨酯分散体的制备方法；其特征在于：
（1）将100质量份异佛尔酮二异氰酸酯，加入到100质量份聚四氢呋喃醚二醇和50质量份[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应2小时。
（2）将17质量份1,6-六亚甲基二异氰酸酯，加入到100质量份聚四氢呋喃醚二醇和50质量份[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应1小时，降温至50℃以下，再加入69质量份异佛尔酮二异氰酸酯，混合均匀后在85±5℃下反应1.5小时。
（3）将步骤（1）和（2）的反应物分别降至室温，加入25质量份对氯苯丙氨酸，混合均匀；将混合液加入到660质量份饱和碳酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至85±5℃下反应3小时。
（4）降至室温分别得到固体份含量30%的水性可剥聚氨酯分散体。
本发明的优点是：通过氮丙啶类和聚碳化二亚胺类固化剂固化得到的膜层具有可剥性，用于加工、运输过程的保护。
具体实施方式
实施例一
（1）将100克异佛尔酮二异氰酸酯，加入到100克聚四氢呋喃醚二醇和50克[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应2小时。
（2）降至室温，加入25克对氯苯丙氨酸，混合均匀；将混合液加入到660克饱和碳酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至85±5℃下反应3小时。
（3）降至室温得到固体份含量30%的水性可剥聚氨酯分散体。
实施例二
（1） 将50克异佛尔酮二异氰酸酯，加入到50克聚四氢呋喃醚二醇和25克[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应2小时。
（2）降至室温，加入12.5克对氯苯丙氨酸，混合均匀；将混合液加入到330克饱和碳酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至80±5℃下反应3小时。
（3）降至室温得到固体份含量30%的水性可剥聚氨酯分散体。
实施例三
（1） 将150克异佛尔酮二异氰酸酯，加入到150克聚四氢呋喃醚二醇和75克[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应2小时。
（2）降至室温，加入37.5克对氯苯丙氨酸，混合均匀；将混合液加入到990克饱和碳酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至85±5℃下反应3小时。
（3）降至室温得到固体份含量30%的水性可剥聚氨酯分散体。
实施例四
（1）将17克1,6-六亚甲基二异氰酸酯，加入到100克聚四氢呋喃醚二醇和50克[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应1小时，降温至50℃以下，再加入69克异佛尔酮二异氰酸酯，混合均匀后在85℃±5反应1.5小时。
（2）降至室温，加入25克对氯苯丙氨酸，混合均匀；将混合液加入到660克饱和碳酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至85±5℃下反应3小时。
（3）降至室温得到固体份含量30%的水性可剥聚氨酯分散体。
实施例五
（1）将8.5克1,6-六亚甲基二异氰酸酯，加入到50克聚四氢呋喃醚二醇和25克[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应1小时，降温至50℃以下，再加入34.5克异佛尔酮二异氰酸酯，混合均匀后在85±5℃下反应1.5小时。
（2）降至室温，加入12.5克对氯苯丙氨酸，混合均匀；将混合液加入到330克饱和碳酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至85±5℃反应3小时。
（3）降至室温得到固体份含量30%的水性可剥聚氨酯分散体。
实施例六
（1）将25.5克1,6-六亚甲基二异氰酸酯，加入到150克聚四氢呋喃醚二醇和75克[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应1小时，降温至50℃以下，再加入103.5克异佛尔酮二异氰酸酯，混合均匀后在85±5℃下反应1.5小时。
（2）降至室温，加入75克对氯苯丙氨酸，混合均匀；将混合液加入到990克饱和碳酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至85±5℃下反应3小时。
（3）降至室温得到固体份含量30%的水性可剥聚氨酯分散体。

Claims (1)

1.两种水溶性可剥聚氨酯分散体的制备方法，其特征是制备方法及步骤为：
（1）将100质量份异佛尔酮二异氰酸酯，加入到100质量份聚四氢呋喃醚二醇和50质量份[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应2小时;
（2）将17质量份1,6-六亚甲基二异氰酸酯，加入到100质量份聚四氢呋喃醚二醇和50质量份[(N,N-二乙基)-(N’,N’-二羟乙基)]丙酸胺的混合物中，混合均匀后在85±5℃下反应1小时，降温至50℃以下，再加入69质量份异佛尔酮二异氰酸酯，混合均匀后在85±5℃下反应1.5小时;
（3）将步骤（1）和（2）的反应物分别降至室温，加入25质量份对氯苯丙氨酸，混合均匀；将混合液加入到660质量份饱和碳酸水溶液中，进行高速分散乳化且同时通入二氧化碳气体，升温至85±5℃反应3小时;
（4）降至室温得到两种固体份含量30%的水性可剥聚氨酯分散体。
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Cited By (3)

* Cited by examiner, † Cited by third party
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CN110563377A (zh) * 2019-09-29 2019-12-13 中建商品混凝土有限公司 一种复配型湿磨混凝土废渣功能助剂及其应用
CN115160532A (zh) * 2022-08-17 2022-10-11 合肥工业大学 一种可促进光合作用的生物基水性聚氨酯及其制备方法
CN116948508A (zh) * 2023-06-20 2023-10-27 温州欧邦新材料有限公司 一种耐腐蚀聚酯粉末涂料及制备方法

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