CN112048054B - 一种溶剂型自消光透湿涂层树脂及其制备方法 - Google Patents

一种溶剂型自消光透湿涂层树脂及其制备方法 Download PDF

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CN112048054B
CN112048054B CN202010953169.4A CN202010953169A CN112048054B CN 112048054 B CN112048054 B CN 112048054B CN 202010953169 A CN202010953169 A CN 202010953169A CN 112048054 B CN112048054 B CN 112048054B
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贝文理
钱伟伟
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Zhejiang Joya Polymer Technology Co ltd
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Abstract

本发明涉及聚氨酯树脂技术领域，尤其是一种溶剂型自消光透湿涂层树脂，包括4,4’‑二苯基甲烷二异氰酸酯、抗氧化剂、聚乙二醇聚醚多元醇、聚四氢呋喃聚醚多元醇、有机铋催化剂、1,4BG、MDA、H12MDA、聚醚改性有机硅流平剂、溶剂。还公开了一种溶剂型自消光透湿涂层树脂的制备方法。本发明技术方案中聚乙二醇聚醚多元醇提供优异的透湿性能，扩链剂MDA和H12MDA可以和4,4’‑二苯基甲烷二异氰酸酯反应生产大量脲基，由于脲基的内聚能比醚基的内聚能大约3倍，软硬段间的相分离程度极大，致使成膜光泽度急剧下降，达到自消光效果。

Description

一种溶剂型自消光透湿涂层树脂及其制备方法
技术领域
本发明涉及聚氨酯树脂技术领域，尤其是一种溶剂型自消光透湿涂层树脂及其制备方法。
背景技术
目前市场上主流的透湿织物仍然为溶剂型，其中以消光型产品为主。溶剂型消光透湿聚氨酯树脂一般由多异氰酸酯、多元醇、小分子扩链剂、消光粉、助剂、溶剂等原料合成，具有独特的嵌段分子结构，可通过调节聚氨酯软硬段的成分比例改变其弹性、硬度、亲水性等，根据消光粉的添加量可控制产品的消光程度，但是产品面临对搓易泛白、水洗后消光性降低等缺陷。
发明内容
本发明的目的是为了解决上述技术的不足而提供一种溶剂型自消光透湿涂层树脂及其制备方法，未采用消光粉的情况下可以实现自消光效果。
为了达到上述目的，本发明所设计的一种溶剂型自消光透湿涂层树脂，包括如下重量份数的原料组份：100-250份4,4’-二苯基甲烷二异氰酸酯(MDI-100)、1-2份抗氧化剂、250-400份聚乙二醇聚醚多元醇、60-100份聚四氢呋喃聚醚多元醇、0.1-0.3份有机铋催化剂、6-12份1,4BG、25-45份二氨基二苯基甲烷(MDA)、15-25份二氨基二环己基甲烷(H12MDA)、4-10份聚醚改性有机硅流平剂、1400-2000份溶剂。
作为优化，所述溶剂包括DMF和EAC，其中DMF与EAC的比例为1.5-4：1。
所述聚乙二醇聚醚多元醇分子量为1500-2500。
所述聚四氢呋喃聚醚多元醇分子量为1500-2500。
所述聚醚改性有机硅流平剂为道康宁8427或道康宁3667。
一种溶剂型自消光透湿涂层树脂的制备方法，将计量的聚乙二醇聚醚多元醇、聚四氢呋喃聚醚多元醇、1,4BG、二氨基二苯基甲烷、二氨基二环己基甲烷、抗氧化剂和计量后的50-100％的DMF投入反应釜中在40℃-50℃下搅拌均匀，然后投入计量的50-80％的4,4’-二苯基甲烷二异氰酸酯在70-80℃下反应2小时，加入计量的有机铋催化剂反应1小时，添加4,4’-二苯基甲烷二异氰酸酯补粘度至粘度合格后停止添加，将剩余的计量的DMF、EAC和流平剂依次加入并搅拌，反应结束出料。
本发明所得到的一种溶剂型自消光透湿涂层树脂及其制备方法，其得到的涂层树脂的固含量为25％-35％，粘度为2-5万cps/25℃，外观为乳白色浊状液体，100％模量2-4Mpa,拉伸强度15-30Mpa，伸长率500％-800％。
本发明技术方案中聚乙二醇聚醚多元醇提供优异的透湿性能，扩链剂MDA和H12MDA可以和4,4’-二苯基甲烷二异氰酸酯反应生产大量脲基，由于脲基的内聚能比醚基的内聚能大约3倍，软硬段间的相分离程度极大，致使成膜光泽度急剧下降，达到自消光效果。
具体实施方式
下面通过实施例对本发明作进一步的描述。
实施例1：
本实施例描述的一种溶剂型自消光透湿涂层树脂的制备方法，根据配方计量：将300质量份PEG1500(聚乙二醇聚醚多元醇)、120质量份PTMEG1500(聚四氢呋喃聚醚多元醇)、12质量份1,4BG、1质量份抗氧化剂、70质量份MDA、40质量份H12MDA、1200质量份DMF投入反应釜中在45℃下搅拌45分钟，将200质量份的MDI-100投入，在70-80℃下反应2小时；再加入0.2质量份有机铋催化剂在70-80℃下反应1小时，将剩余的MDI-100分步补加至粘度合格后停止加入；最后将600质量份的EAC和8份道康宁8427加入，在70-80℃下搅拌1小时后出料，得到溶剂型自消光透湿涂层树脂。
实施例2：
本实施例描述的一种溶剂型自消光透湿涂层树脂的制备方法，根据配方计量：将170质量份PEG2000(聚乙二醇聚醚多元醇)、60质量份PTMEG2000(聚四氢呋喃聚醚多元醇)、6质量份1,4BG、0.5质量份抗氧化剂、35质量份MDA、20质量份H12MDA、600质量份DMF投入反应釜中在45℃下搅拌45分钟，将100质量份的MDI-100投入，在70-80℃下反应2小时；再加入0.1质量份有机铋催化剂在70-80℃下反应1小时，将剩余的MDI-100分步补加至粘度合格后停止加入；最后将300质量份的EAC和4份道康宁8427加入，在70-80℃下搅拌1小时后出料，得到溶剂型自消光透湿涂层树脂。
实施例3：
本实施例描述的一种溶剂型自消光透湿涂层树脂的制备方法，根据配方计量：将300质量份PEG2500(聚乙二醇聚醚多元醇)、100质量份PTMEG2500(聚四氢呋喃聚醚多元醇)、9质量份1,4BG、0.6质量份抗氧化剂、40质量份MDA、25质量份H12MDA、1000质量份DMF投入反应釜中在45℃下搅拌45分钟，将120质量份的MDI-100投入，在70-80℃下反应2小时；再加入0.1质量份有机铋催化剂在70-80℃下反应1小时，将剩余的MDI-100分步补加至粘度合格后停止加入；最后将450质量份的EAC和5份道康宁3667加入，在70-80℃下搅拌1小时后出料，得到溶剂型自消光透湿涂层树脂。
上述三个实施例得到的溶剂型自消光透湿涂层树脂在15D布上涂层测试结果如下：
Figure GDA0003327374940000031
测试方法及设备采用：
光泽度测试：按照GB 9754；光度仪德国BYK AG-4446。
透湿性测试标准：GB/T12704.1-2009纺织品织物透湿性试验方法第1部分吸湿法。

Claims (5)

1.一种溶剂型自消光透湿涂层树脂，其特征是：包括如下重量份数的原料组份：100-250份4,4’-二苯基甲烷二异氰酸酯、1-2份抗氧化剂、250-400份聚乙二醇聚醚多元醇、60-100份聚四氢呋喃聚醚多元醇、0.1-0.3份有机铋催化剂、6-12份1,4BG、25-45份二氨基二苯基甲烷、15-25份二氨基二环己基甲烷、4-10份聚醚改性有机硅流平剂、1400-2000份溶剂；所述溶剂包括DMF和EAC，其中DMF与EAC的比例为1.5-4：1。
2.根据权利要求1所述的一种溶剂型自消光透湿涂层树脂，其特征是：所述聚乙二醇聚醚多元醇分子量为1500-2500。
3.根据权利要求1所述的一种溶剂型自消光透湿涂层树脂，其特征是：所述聚四氢呋喃聚醚多元醇分子量为1500-2500。
4.根据权利要求1所述的一种溶剂型自消光透湿涂层树脂，其特征是：所述聚醚改性有机硅流平剂为道康宁8427或道康宁3667。
5.一种如权利要求1所述溶剂型自消光透湿涂层树脂的制备方法，其特征是：将计量的聚乙二醇聚醚多元醇、聚四氢呋喃聚醚多元醇、1,4BG、二氨基二苯基甲烷、二氨基二环己基甲烷、抗氧化剂和计量后的50-100％的DMF投入反应釜中在40℃-50℃下搅拌均匀，然后投入计量的50-80％的4,4’-二苯基甲烷二异氰酸酯在70-80℃下反应2小时，加入计量的有机铋催化剂反应1小时，添加4,4’-二苯基甲烷二异氰酸酯补粘度至粘度合格后停止添加，将剩余的计量的DMF、EAC和流平剂依次加入并搅拌，反应结束出料。
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