CN112029399A - 一种防雾涂料及其制备方法 - Google Patents
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Abstract
一种防雾涂料,以重量份数计算,由以下成分制成:亲水氨基甲酸酯材料60‑70份、固化剂10‑15份、有机硅消泡剂0.005‑0.010份、流平剂0.01‑0.05份、润湿剂5‑10份、溶剂50‑60份、硅烷偶联剂0.05‑0.06份。所述防雾涂料具有优秀的防雾性及净化空气功能,它不仅可以有效防止玻璃表面遇到温差产生雾化,而且还可以净化室内周围环境空气,对于甲醛、异味及细菌均具有一定的中和和消灭功能。
Description
技术领域
本发明属于涂料技术领域,具体涉及一种防雾涂料及其制备方法。
背景技术
基于纳米二氧化钛、二氧化硅的抗压防雾膜,是一种贴在室内玻璃上的一种高分子保护膜,由于此类材料,具有优秀的防雾性及净化空气功能,它不仅可以有效防止玻璃表面遇到温差产生雾化,而且还可以净化室内周围环境空气,对于甲醛、异味及细菌均具有一定的中和消灭功能,此外,由于此款防雾膜基材所使用的是高强度类聚酯基材,此类基材可以极大限度的减少玻璃破碎时的碎片飞散,减少玻璃的隐性伤害,以保障人身安全。因此有必要开发一种防雾涂料,用于生产防雾膜。
发明内容
本发明的目的在于提供一种防雾涂料及其制备方法,所述防雾涂料具有优秀的防雾性及净化空气功能,它不仅可以有效防止玻璃表面遇到温差产生雾化,而且还可以净化室内周围环境空气,对于甲醛、异味及细菌均具有一定的中和消灭功能。
本发明所述防雾涂料包括四层,第一层为抗压防雾层,第二层为聚对苯二甲酸乙二醇酯薄膜层,第三层为胶黏剂层,第四层为离合膜层。
本发明所述防雾涂料,以重量份数计算,由以下成分制成:
亲水氨基甲酸酯材料60-70份、固化剂10-15份、有机硅消泡剂0.005-0.010份、流平剂0.01-0.05份、润湿剂5-10份、溶剂50-60份、硅烷偶联剂0.05-0.06份。
其中所述的亲水氨基甲酸酯材料由如下方法制备:
(1)2.0mol一乙醇胺和0.6g催化剂氧化锂加入反应器中,氮气保护,连续搅拌,加热至60℃,滴加176g(2.0mol)碳酸乙烯酯,保温反应,直至一乙醇胺消耗完;
(2)1mol步骤(1)的产物和3毫升2.5%氢氧化锂甲醇溶液加入反应器中,安装回流冷凝器,加入4-6mol的丙烯酸,再加入2-3mol的纳米二氧化钛连续搅拌,并加热至115-120℃,连续搅拌反应4小时,最后加入氢氧化钠调节pH值至中性,甲醇收集蒸出。
步骤(2)中的丙烯酸要过量,是因为最后与氢氧化钠生成的丙烯酸钠,在后续的涂料配方中你可以起到分散剂的作用。
所述的固化剂为六亚甲基二异氰酸酯。
所述的有机硅消泡剂为DF-2953。
所述的流平剂为丙烯酸类流平剂。
所述的硅烷偶联剂为KH550。
所述的溶剂为乙酸乙酯。
本发明所述防雾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、亲水氨基甲酸酯材料,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、润湿剂和硅烷偶联剂混合搅拌均匀,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,得到抗压防雾层涂料。
本发明的有益效果如下:所述防雾涂料具有优秀的防雾性及净化空气功能,它不仅可以有效防止玻璃表面遇到温差产生雾化,而且还可以净化室内周围环境空气,对于甲醛、异味及细菌均具有一定的中和消灭功能。
具体实施方式
实施例1
抗压防雾层配方:
亲水氨基甲酸酯材料65份、六亚甲基二异氰酸酯12份、消泡剂DF-29530.008份、丙烯酸类流平剂金团KEPERSURF-1570.04份、润湿剂PetroAA6份、溶剂50份,硅烷偶联剂KH5500.05份,其中溶剂为乙酸乙酯。
其中亲水氨基甲酸酯材料制备方法如下:
(1)2.0mol一乙醇胺和0.6g催化剂氧化锂加入反应器中,氮气保护,连续搅拌,加热至60℃,滴加176g碳酸乙烯酯,保温反应,直至一乙醇胺消耗完;
(2)1mol步骤(1)的产物和3毫升2.5%氢氧化锂甲醇溶液加入反应器中,安装回流冷凝器,加入6mol的丙烯酸,再加入3mol的纳米二氧化钛连续搅拌,并加热至115-120℃,连续搅拌反应4小时,最后加入氢氧化钠调节pH值至中性,甲醇收集蒸出。
其中抗压防雾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、亲水氨基甲酸酯材料,3000转/分下搅拌2小时,得到组分A。
(2)将另外1/2的溶剂、流平剂、润湿剂和硅烷偶联剂混合搅拌均匀,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转/分下分散2小时,得到抗压防雾层涂料。
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10101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UV5710.5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。
所述防雾涂料的制备方法如下:
(1)将抗压防雾层涂料上机涂布,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,抗压防雾层的厚度为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:≥600-900gf/25mm;
2)厚度:70±2um;
3)透光率:≥90%;
4)雾度:≤1.0;
5)水滴角:≤15°且液面快速均匀摊开,经与70℃以上的水蒸气接触5S再分离(往返10次);
6)耐磨性≥100次(0000#钢丝绒+1KG砝码);
7)气味:无;
8)空气净化相关指数(来源于-广东省微生物分析检测中心)
9)甲醛去除率:95.9%;
10)大肠杆菌杀菌率:12.9%;
11)金黄色葡萄球菌杀菌率:12.7%;
12)白色念珠球菌杀菌率:18.96%;
13)铜绿假单胞菌杀菌率:15.30%。
对比例1
与实施例1的唯一不同点在于,亲水氨基甲酸酯材料的制备过程中丙烯酸不过量,后续加入等量的丙烯酸钠分散剂,所得涂层水滴角为26°。
对比例2
与实施例1的唯一不同点在于,涂层中的纳米二氧化钛在制备涂料时加入,而不是制备亲水氨基甲酸酯材料时加入,雾度为11。
Claims (4)
1.一种防雾涂料,其特征在于,以重量份数计算,由以下成分制成:
亲水氨基甲酸酯材料60-70份、固化剂10-15份、有机硅消泡剂0.005-0.010份、流平剂0.01-0.05份、润湿剂5-10份、溶剂50-60份、硅烷偶联剂0.05-0.06份。
2.根据权利要求1所述的防雾涂料,其特征在于,所述的亲水氨基甲酸酯材料由如下方法制备:
(1)2.0mol一乙醇胺和0.6g催化剂氧化锂加入反应器中,氮气保护,连续搅拌,加热至60℃,滴加176g(2.0mol)碳酸乙烯酯,保温反应,直至一乙醇胺消耗完;
(2)1mol步骤(1)的产物和3毫升2.5%氢氧化锂甲醇溶液加入反应器中,安装回流冷凝器,加入4-6mol的丙烯酸,再加入2-3mol的纳米二氧化钛连续搅拌,并加热至115-120℃,连续搅拌反应4小时,最后加入氢氧化钠调节pH值至中性,甲醇收集蒸出。
3.根据权利要求所述1的防雾涂料,其特征在于所述的溶剂为乙酸乙酯。
4.根据权利要求1所述防雾涂料的制备方法,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、亲水氨基甲酸酯材料,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、润湿剂和硅烷偶联剂混合搅拌均匀,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,得到抗压防雾层涂料。
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