CN112029406A - 一种自我修复涂料及其制备方法 - Google Patents

一种自我修复涂料及其制备方法 Download PDF

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CN112029406A
CN112029406A CN202010822371.3A CN202010822371A CN112029406A CN 112029406 A CN112029406 A CN 112029406A CN 202010822371 A CN202010822371 A CN 202010822371A CN 112029406 A CN112029406 A CN 112029406A
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江敏
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Abstract

一种自我修复涂料，以重量份数计算，由以下成分制成：丙烯酸改性的聚氨酯40‑60份、固化剂10‑15份、消泡剂0.005‑0.010份、流平剂0.01‑0.05份、氟钛酸5‑10份、溶剂50‑60份，乳化剂0.05‑0.06份。所述自我修复涂料具有优秀的减震性及划痕复原性，它不仅可以有效缓冲撞击，防止屏幕爆裂，或不慎撞击造成玻璃、或塑胶面板的破碎飞散，减少玻璃面板的隐性伤害，还具有对硬物产生的细微刮伤产生自我修复功能，以保障用户安全，此外，它也具有良好的防指纹和憎水性，还可保持屏幕面板玻璃特有的光泽和质感。

Description

一种自我修复涂料及其制备方法
技术领域
本发明属于涂料技术领域，具体涉及一种自我修复涂料及其制备方法。
背景技术
减震防护膜，是一种贴在手机前后屏（玻璃、或塑胶）上的一种高分子保护膜，由于此类材料具有优秀的减震性及划痕复原性，它不仅可以有效缓冲撞击，防止屏幕爆裂，或不慎撞击造成玻璃、或塑胶面板的破碎飞散，减少玻璃面板的隐性伤害，还具有对硬物产生的细微刮伤产生自我修复功能，以保障用户安全，此外，它也具有良好的防指纹和憎水性，还可保持屏幕面板玻璃特有的光泽和质感。
因此，有必要开发一种自我修复涂料，用来制作减震防护膜。
发明内容
本发明的目的在于提供一种自我修复涂料及其制备方法，所述自我修复涂料具有优秀的减震性及划痕复原性，它不仅可以有效缓冲撞击，防止屏幕爆裂，或不慎撞击造成玻璃、或塑胶面板的破碎飞散，减少玻璃面板的隐性伤害，还具有对硬物产生的细微刮伤产生自我修复功能，以保障用户安全，此外，它也具有良好的防指纹和憎水性，还可保持屏幕面板玻璃特有的光泽和质感。
本发明所述自我修复涂料，以重量份数计算，由以下成分制成：
丙烯酸改性的聚氨酯40-60份、固化剂10-15份、消泡剂0.005-0.010份、流平剂0.01-0.05份、氟钛酸5-10份、溶剂50-60份，乳化剂0.05-0.06份。
其中所述的丙烯酸改性的聚氨酯由如下方法制备：
将环氧树脂50-100份、丙烯酸10-20份和三乙胺0.2-0.5份加入反应器中，在90-110℃下反应1-3小时，再加入六亚甲基二异氰酸酯5-10份，在80-90℃下反应1-3小时，最后加入三缩三丙二醇二丙烯酸酯即可得到丙烯酸改性的聚氨酯。
所述的固化剂为六亚甲基二异氰酸酯。
所述的消泡剂为BYK-012。
所述的流平剂为丙烯酸类流平剂。
所述的乳化剂为十二烷基磺酸钠。
所述的溶剂为水和乙酸乙酯复配，复配重量比为1:7-10，如果水分过多，得到的涂层表面不平整，水分过少，氟钛酸发挥不了耐指纹的作用。
本发明所述自我修复涂料的制备方法如下：
(1)在搅拌釜内加入1/2的溶剂，在搅拌状态下依次加入消泡剂、丙烯酸改性的聚氨酯，2500-3000转/分下搅拌1-2小时，得到组分A。
(2)将另外1/2的溶剂、流平剂、氟钛酸和乳化剂混合搅拌均匀，得到组分B；
(3)将固化剂和组分B加入组分A中，边搅拌边投料，2000-3000转/分下分散1-2小时，得到自我修复涂层涂料。
本发明的有益效果如下：所述自我修复涂料具有优秀的减震性及划痕复原性，它不仅可以有效缓冲撞击，防止屏幕爆裂，或不慎撞击造成玻璃、或塑胶面板的破碎飞散，减少玻璃面板的隐性伤害，还具有对硬物产生的细微刮伤产生自我修复功能，以保障用户安全，此外，它也具有良好的防指纹和憎水性，还可保持屏幕面板玻璃特有的光泽和质感。
具体实施方式
实施例1
自我修复涂层配方：
丙烯酸改性的聚氨酯45份、六亚甲基二异氰酸酯12份、消泡剂BYK-012 0.009份、丙烯酸类流平剂金团KEPERSURF-157 0.04份、氟钛酸6份、溶剂50份，乳化剂TX-10 0.06份，其中溶剂中水和乙酸乙酯的复配重量比为1:9。
其中丙烯酸改性的聚氨酯制备方法如下：
将环氧树脂E51 70份、丙烯酸15份和三乙胺0.4份加入反应器中，在95℃下反应2小时，再加入六亚甲基二异氰酸酯6份，在85℃下反应2小时，最后加入三缩三丙二醇二丙烯酸酯即可得到丙烯酸改性的聚氨酯。
其中自我修复涂层涂料的制备方法如下：
(1)在搅拌釜内加入1/2的溶剂，在搅拌状态下依次加入消泡剂、丙烯酸改性的聚氨酯，2500-3000转/分下搅拌1-2小时，得到组分A。
(2)将另外1/2的溶剂、流平剂、氟钛酸和乳化剂混合搅拌均匀，得到组分B。
(3)将固化剂和组分B加入组分A中，边搅拌边投料，2000-3000转/分下分散1-2小时，得到自我修复涂层涂料。
聚对苯二甲酸乙二醇酯薄膜层的配方如下：
聚对苯二甲酸乙二醇酯100份、抗氧剂1010 1份，钛酸酯偶联剂3份；成核剂二氧化硅0.6份、耐紫外光老化剂UV571 0.5份。
聚对苯二甲酸乙二醇酯薄膜层的制备方法如下：
（1）将各物料按比例称好，放入高速混合机中混合均匀，混合时间7分钟，混合转速1100转/分钟，然后放出物料；
（2）将上述混配好的物料投入到双螺杆挤出机中挤出片材，然后进行四辊压延，压延温度为250℃，然后在190℃范围内双向拉伸，即得所述聚对苯二甲酸乙二醇酯薄膜层,膜厚为15μm。
所述自我修复涂料的制备方法如下：
（1）将自我修复涂层涂料上机涂布，基材为聚对苯二甲酸乙二醇酯薄膜层；
（2）然后上胶二甲基硅油，附上离合膜即可。
其中，聚对苯二甲酸乙二醇酯薄膜层的厚度为15μm，自我修复涂层的厚度为20μm，胶黏剂层的厚度为10μm，离合膜层的厚度为10μm。
实施例1的技术性能指标如下：
1）剥离力：≥80-120 gf/25mm；
2）厚度：90±2um；
3）透光率：≥90%；
4）雾度：≤1.0；
5）自修复性：≤2S(750gf*专用铜丝刷) ；
6）水滴接触角≥105°；
7）气味：无；
8）防指纹性：对于指纹印，容易擦拭。
对比例1
与实施例1的唯一不同点在于，涂料的溶剂全部为水，得到的涂层表面不平整。
对比例2
与实施例1的唯一不同点在于，涂料的溶剂全部为乙酸乙酯，得到的涂层耐指纹性不好，指纹印擦不掉。

Claims (5)

1.一种自我修复涂料，其特征在于，以重量份数计算，由以下成分制成：
丙烯酸改性的聚氨酯40-60份、固化剂10-15份、消泡剂0.005-0.010份、流平剂0.01-0.05份、氟钛酸5-10份、溶剂50-60份，乳化剂0.05-0.06份。
2.根据权利要求所述1的自我修复涂料，其特征在于所述的丙烯酸改性的聚氨酯由如下方法制备：
将环氧树脂50-100份、丙烯酸10-20份和三乙胺0.2-0.5份加入反应器中，在90-110℃下反应1-3小时，再加入六亚甲基二异氰酸酯5-10份，在80-90℃下反应1-3小时，最后加入三缩三丙二醇二丙烯酸酯即可得到丙烯酸改性的聚氨酯。
3.根据权利要求1所述的自我修复涂料，其特征在于所述的固化剂为六亚甲基二异氰酸酯，所述的消泡剂为BYK-012，所述的流平剂为丙烯酸类流平剂，所述的乳化剂为TX-10。
4.根据权利要求所述1的自我修复涂料，其特征在于所述的溶剂为水和乙酸乙酯复配，复配重量比为1:7-10。
5.根据权利要求1所述自我修复涂料的制备方法，其特征在于包括如下步骤：
(1)在搅拌釜内加入1/2的溶剂，在搅拌状态下依次加入消泡剂、丙烯酸改性的聚氨酯，2500-3000转/分下搅拌1-2小时，得到组分A；
(2)将另外1/2的溶剂、流平剂、氟钛酸和乳化剂混合搅拌均匀，得到组分B；
（3)将固化剂和组分B加入组分A中，边搅拌边投料，2000-3000转/分下分散1-2小时，得到自我修复涂层涂料。
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Cited By (1)

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CN113912819A (zh) * 2021-09-28 2022-01-11 广东粤港澳大湾区黄埔材料研究院 一种聚氨酯材料及其制备方法与应用

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