CN110183953A - 一种防污自清洁型自消光水性聚氨酯分散体材料及其制备方法 - Google Patents
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Abstract
本发明提出了一种防污自清洁型自消光水性聚氨酯分散体材料及其制备方法，该材料按照重量比包含20‑80%的聚氨酯组分、1‑10%防污组分、0.1‑10%的乳化剂成分以及余量水；本方案通过控制分子量和亲水基团的含量来调节最终乳液的粒径大小，实现涂层的自消光，解决了消光添加物凝结导致乳液不均匀问题，涂层的物性均匀，且解决了消光粉沉淀导致使用施工光泽不均匀等问题，同时通过在分子链上引入具有防污自清洁功效的单体赋予了涂层永久防污功效。
Description
技术领域
本发明属于表面处理领域，具体涉及一种防污自清洁型自消光水性聚氨酯分散体材料及其制备方法。
背景技术
自消光水性聚氨酯材料一般用于皮革处理，需要具备消光、防污和稳定等特点；
现有技术中的自消光处理剂的制备方法中均是通过外添加消光粉来达到消光要求，外添加消光粉工艺麻烦，导致粉尘污染，存在粉尘爆炸的风险，且成品稳定性差，外力摩擦光泽升高，不耐磨，容易折白等问题；
为了防污，一般为外添加氟硅类单体，通过强力分散等机械作用分散于乳液中，缺点，1，单体与乳液相容性可能有问题，例如粘度增大严重的会絮凝；2，存储稳定可能有问题，有可能会出现浮油等现象。3.涂层持久性有问题，氟硅助剂存在于涂层表面，独立成膜形成保护膜，但是无化学键连接，长时间磨损会导致防污防水性能下降或者最终消失。
发明内容
针对上述技术问题，本发明的目的提供一种具有良好的耐化学品、耐候性，且防污自清洁型自消光水性聚氨酯分散体材料及其制备方法及其制备方法；
本发明是通过下述的技术方案来实现的：
一种防污自清洁型自消光水性聚氨酯分散体材料，该材料按照重量比包含20-80%的聚氨酯组分、1-10%防污组分、0.1-10%的乳化剂成分以及余量水；
聚氨酯、防污组分和乳化剂的粒子总和中至少有70%的粒子具有大于1000nm的粒子尺寸；
其中，防污组分的摩尔浓度为0.5-2mol/L。
优选地，所述聚氨酯组分按照质量比包括异佛尔酮二异氰酸酯（IPDI）30-50%、聚丁二醇己二酸聚酯（PBA）50-70%以及2,2-二羟甲基丙酸（DMPA）1-4%。
优选地 ，所述防污组分为羟基聚二甲基硅氧烷多元醇(DC1248)或迈图有机硅(C2812)的一种，其质量分数为5-20%。
优选地，所述乳化剂为克莱恩非离子乳化剂（X405）。
优选地，包括以下步骤：第一步，聚氨酯预聚体的制备；在安装有温度计和搅拌器的烧瓶中加入IPDI、PBA、DMBA、DC1248或者C2812中的一种、二月桂酸二丁基锡，缓慢加热至80度，并在高温下反应3小时，测试NCO%小于等于理论值后，加入丙酮，降温至50度后，加入水和0.5-2%质量分数的Vestamin A95的混合液，搅拌30min，制得聚氨酯预聚体；第二步，将所得预聚体倒入含有X405和TegoFomaex K3的水中，再加入乙二胺的水溶液，搅拌30min，得到目标产物。
与现有技术不同的是：通过两个步骤来制备最终的目标产物，首先是制备聚氨酯的预聚体，不在采用现有技术中将所有单一组分混合进行强力搅拌的物理制备方式，采用本方案时，是将聚氨酯组分、防污组分通过催化剂的作用进行反应，其反应机理是化学反应，反应完毕后，溶液中存在的是聚氨酯预聚体大分子，且该大分子的侧链或者主链上具有硅链段，而现有技术所制得的产品是单一组分分别其到其本身的作用，由此可以得出，本申请的技术方案得到的产品具有极强的稳定性。
有益效果：本方案通过控制分子量和亲水基团的含量来调节最终乳液的粒径大小，实现涂层的自消光，解决了消光添加物凝结导致乳液不均匀问题，涂层的物性均匀，且解决了消光粉沉淀导致使用施工光泽不均匀等问题。同时通过化学作用，永久的将抗污和自清洁作用的基团接枝于聚氨酯主链上，效果显著。本发明作为涂料组合物或者用于涂料组合物的主要成分，可以通过刮刷、喷涂等传统方法涂覆于各种基材上，包括木材，板料，金属，玻璃，塑料，皮革和纺织等领域，尤其是皮革和纺织领域特别有用。对研究制备具有防污自清洁性能的高档皮革十分重要。
具体实施方式：
实施例1：第一步，聚氨酯预聚体的制备；在安装有温度计和搅拌器的烧瓶中加入IPDI35份、PBA60份、DMBA3份、DC1248十份、二月桂酸二丁基锡2滴，缓慢加热至80度，并在高温下反应3小时，测试NCO%小于等于理论值后，加入丙酮，降温至50度后，加入水和质量分数为0.8%的Vestamin A95的混合液，搅拌30min，制得聚氨酯预聚体；第二步，将所得预聚体倒入含有X405和TegoFomaex K3的水中，再加入乙二胺的水溶液，搅拌30min，得到目标产物。
实施例2：第一步，聚氨酯预聚体的制备；在安装有温度计和搅拌器的烧瓶中加入IPDI40份、PBA60份、DMBA5份、C2812十份、二月桂酸二丁基锡2滴，缓慢加热至80度，并在高温下反应3小时，测试NCO%小于等于理论值后，加入丙酮，降温至50度后，加入水和质量分数为1%的Vestamin A95的混合液，搅拌30min，制得聚氨酯预聚体；第二步，将所得预聚体倒入含有X405和TegoFomaex K3的水中，再加入乙二胺的水溶液，搅拌30min，得到目标产物。
实施例3：包括以下步骤：第一步，聚氨酯预聚体的制备；在安装有温度计和搅拌器的烧瓶中加入IPDI35份、PBA60份、DMBA3份、DC1248十五份、二月桂酸二丁基锡2滴，缓慢加热至80度，并在高温下反应3小时，测试NCO%小于等于理论值后，加入丙酮，降温至50度后，加入水和质量分数为1%的Vestamin A95的混合液，搅拌30min，制得聚氨酯预聚体；第二步，将所得预聚体倒入含有X405和TegoFomaex K3的水中，再加入乙二胺的水溶液，搅拌30min，得到目标产物。
实施例4：实施例1：包括以下步骤：第一步，聚氨酯预聚体的制备；在安装有温度计和搅拌器的烧瓶中加入IPDI45份、PBA75份、DMBA3份、DC1248十二份、二月桂酸二丁基锡2滴，缓慢加热至80度，并在高温下反应3小时，测试NCO%小于等于理论值后，加入丙酮，降温至50度后，加入水和质量分数为1%的Vestamin A95的混合液，搅拌30min，制得聚氨酯预聚体；第二步，将所得预聚体倒入含有X405和TegoFomaex K3的水中，再加入乙二胺的水溶液，搅拌30min，得到目标产物。
实施例5：包括以下步骤：第一步，聚氨酯预聚体的制备；在安装有温度计和搅拌器的烧瓶中加入IPDI35份、PBA60份、DMBA5份、DC1248十五份、二月桂酸二丁基锡2滴，缓慢加热至80度，并在高温下反应3小时，测试NCO%小于等于理论值后，加入丙酮，降温至50度后，加入水和质量分数为1%的Vestamin A95的混合液，搅拌30min，制得聚氨酯预聚体；第二步，将所得预聚体倒入含有X405和TegoFomaex K3的水中，再加入乙二胺的水溶液，搅拌30min，得到目标产物。
经过检测：上述实施例的产物的成膜光泽具有<1的85°光泽度；所制得的聚氨酯分散体，最终含量大于35%，PH=7.5。
对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。
Claims (5)
1.一种防污自清洁型自消光水性聚氨酯分散体材料，其特征在于，该材料按照重量比包含20-80%的聚氨酯组分、1-10%防污组分、0.1-10%的乳化剂成分以及余量水；
聚氨酯、防污组分和乳化剂的粒子总和中至少有70%的粒子具有大于1000nm的粒子尺寸；
其中，防污组分的摩尔浓度为0.5-2mol/L。
2.如权利要求1所述的一种防污自清洁型自消光水性聚氨酯分散体材料其特征在于，所述聚氨酯组分按照质量比包括异佛尔酮二异氰酸酯（IPDI）30-50%、聚丁二醇己二酸聚酯（PBA）50-70%以及2,2-二羟甲基丙酸（DMPA）1-4%。
3.如权利要求1所述的一种防污自清洁型自消光水性聚氨酯分散体材料其特征在于，所述防污组分为羟基聚二甲基硅氧烷多元醇(DC1248)或迈图有机硅(C2812)的一种，其质量分数为5-20%。
4.如权利要求1所述的一种防污自清洁型自消光水性聚氨酯分散体材料其特征在于，所述乳化剂为克莱恩非离子乳化剂（X405）。
5.一种制备权利要求1所述分散体材料的方法，其特征在于，包括以下步骤：第一步，聚氨酯预聚体的制备；在安装有温度计和搅拌器的烧瓶中加入IPDI、PBA、DMBA、DC1248或者C2812中的一种、二月桂酸二丁基锡，缓慢加热至80度，并在高温下反应3小时，测试NCO%小于等于理论值后，加入丙酮，降温至50度后，加入水和0.5-2%质量分数的Vestamin A95的混合液，搅拌30min，制得聚氨酯预聚体；第二步，将所得预聚体倒入含有X405和TegoFomaexK3的水中，再加入乙二胺的水溶液，搅拌30min，得到目标产物。
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| CN1735642A (zh) * | 2003-01-04 | 2006-02-15 | 帝斯曼知识产权资产管理有限公司 | 用于低光泽涂料的水性聚氨酯组合物 |
| CN107200823A (zh) * | 2017-06-08 | 2017-09-26 | 安徽大学 | 一种双重交联型水性聚氨酯自消光树脂及其制备方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1735642A (zh) * | 2003-01-04 | 2006-02-15 | 帝斯曼知识产权资产管理有限公司 | 用于低光泽涂料的水性聚氨酯组合物 |
| CN107200823A (zh) * | 2017-06-08 | 2017-09-26 | 安徽大学 | 一种双重交联型水性聚氨酯自消光树脂及其制备方法 |
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