CN107177261A - 高性能砂壁状涂料及其制备方法 - Google Patents
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Abstract
本发明涉及一种高性能砂壁状涂料及其制备方法，其特征在于，包括以下重量份数的原料：基料15‑30份、天然彩砂60‑80份、成膜助剂3‑6份、润湿剂0.1‑0.5份、钛白粉0.5‑2份、分散剂0.1‑0.3份、防腐防霉剂0.1‑0.5份、多功能助剂0.1‑0.5份、消泡剂0.05‑0.2份、增稠剂0.01‑0.2份、去离子水10‑15份，所述基料包括纯丙乳液和苯丙乳液的混合物，纯丙乳液和苯丙乳液的重量比为1‑2:1。本发明的砂壁状涂料各成分科学配伍，制成的涂料综合性能好，用量少，使用成本低，强度高，表面致密，施工便捷，耐沾污性好，机械施工效率高，涂层装饰效果好，质感强，色彩丰富，仿石效果好。
Description
技术领域
本发明属于建筑材料技术领域，特别涉及一种适用于住宅、学校、公寓等外墙体涂装领域的高性能砂壁状涂料及其制备方法。
背景技术
砂壁状涂料由于色彩生动艳丽，装饰效果极佳而广泛应用于装饰壁墙。由于具有可观的市场价值，受欢迎程度极高，砂壁状涂料的研制和应用也在长时间不断的创新。通过工程人员的施工技艺，可以营造出各种各样的艺术效果，使砂壁状涂料的需求量日益增多。
目前市场上的砂壁状涂料大都是以天然彩砂、人工有光染色彩砂或者煅烧彩砂来达到砂壁状仿石涂料纹理的效果。但是，上述材料制成的砂壁状涂料存在以下缺陷：1、由于光泽偏高，天然彩砂的着色力及遮盖力低、甚至部分彩砂为透明，导致涂层容易折光发花，用量必须大以保证完全覆盖基层，使用成本高；2、由于采用有机乳液作为中涂层使用，涂层容易泛白、呈现光泽，耐沾污性较差，施工工艺复杂；3、采用纤维素等有机材料作为增稠剂，涂层容易吸水及泛白、流平性好而更不容易定型、干燥速度慢、喷涂施工粘度低、涂膜遮盖力不强，机械施工效率低，容易落砂，耐久性差。
因此，提供一种用量少，使用成本低，强度高，表面致密，施工便捷，着色力及遮盖力强，耐沾污性好，抗裂性、耐水性及耐碱性能好，机械施工效率高的高性能砂壁状涂料及其制备方法是很有必要的。
发明内容
本发明的目的是提供一种用量少，使用成本低，强度高，表面致密，施工便捷，着色力及遮盖力强，耐沾污性好，抗裂性、耐水性及耐碱性能好，机械施工效率高的高性能砂壁状涂料及其制备方法。
本发明是这样实现的：
一种高性能砂壁状涂料，其特征在于，包括以下重量份数的原料：基料15-30份、天然彩砂60-80份、成膜助剂3-6份、润湿剂0.1-0.5份、钛白粉0.5-2份、分散剂0.1-0.3份、防腐防霉剂0.1-0.5份、多功能助剂0.1-0.5份、消泡剂0.05-0.2份、增稠剂0.01-0.2份、去离子水10-15份，所述基料包括纯丙乳液和苯丙乳液的混合物，纯丙乳液和苯丙乳液的重量比为1-2:1。
进一步优选，所述天然彩砂的粒径为10-120目，其中，10-20目占15%，20-40目占30%，40-80目占45%，80-120占10%。
进一步优选，所述成膜助剂为丙二醇丁醚、丙二醇甲醚醋酸酯、十二碳醇酯、乙二醇丁醚、丙二醇苯醚的一种或几种组合。
进一步优选，所述润湿剂为聚氧乙烯烷基酚醚，聚氧乙烯脂肪醇醚，聚氧乙烯聚氧丙烯嵌段共聚物的一种或几种组合。
进一步优选，所述分散剂为聚羧酸钠盐阴离子分散剂。
进一步优选，所述防腐防霉剂为对羟基苯甲酸乙酯和2-苯并咪唑氨基甲酸甲酯的混合物，对羟基苯甲酸乙酯和2-苯并咪唑氨基甲酸甲酯的重量比为1:1。
进一步优选，所述多功能助剂为有机胺类pH调节剂。选购自安格斯的AMP-95或德谦MA-95。
进一步优选，所述增稠剂为聚氨酯类增稠剂。
进一步优选，所述消泡剂为金属皂类消泡剂和石蜡类消泡剂的混合物，金属皂类消泡剂和石蜡类消泡剂的重量比为1:0.5。
本发明的高性能砂壁状涂料的制备方法，其特征在于，包括以下步骤：
S1、先将去离子水放入分散机中，然后在分散机转速为300-400rpm的条件下，向分散机中依次加入分散剂、润湿剂、消泡剂总量的一半，加完后提速到1000rpm搅拌5-10min，然后调节转速为600rpm，缓慢加入钛白粉，加完后调高速1200rpm，高速分散5min，再加入成膜助剂搅拌5min；
S2、在500rpm低速搅拌下缓慢加入纯丙乳液，并加入多功能助剂，调节pH值至8-9，搅拌时间为5-10min，制得浆料；
S3、边搅拌边将天然彩砂按照粒径从细到粗依次加入，加完后提速到700-800rpm搅拌5-10分钟，再加入防腐防霉剂、剩余消泡剂，最后滴加增稠剂搅拌10min，调节好黏度后出料，制得高性能砂壁状涂料。
本发明突出的实质性特点和显著的进步是：
1、本发明的砂壁状涂料各成分科学配伍，综合性能好，性能满足相关标准要求，用量少，使用成本低，强度高，表面致密，施工便捷，着色力及遮盖力强，耐沾污性好，抗裂性、耐水性及耐碱性能好，机械施工效率高，涂层装饰效果好，质感强，色彩丰富，仿石效果好。
2、本发明的基料包括纯丙乳液和苯丙乳液的混合物，能够显著提高涂层耐沾污性和拉伸粘结强度。
3、本发明的天然彩砂颗粒级配能够使得涂抹后涂层表面装饰层致密，效果层次分明，回弹量低，抹涂时掉砂量非常小。
4、本发明加入聚氨酯类增稠剂搭配使用，使得涂料的系统稳定性最好，具有良好的涂刷性，流平性、耐水性、耐碱性、防飞溅性及耐霉性。
5、消泡剂采用金属皂类消泡剂和石蜡类消泡剂的混合物，能够消泡的同时具有抑泡作用，消泡效果好，用量少降低生产成本。
6、防腐防霉剂采用对羟基苯甲酸乙酯和2-苯并咪唑氨基甲酸甲酯复配，对涂料防腐防霉效果好，避免涂料受到外界微生物的侵蚀，导致涂料的性能下降，影响涂料的使用价值。
具体实施方式
下面结合实施例对本发明作以下说明。
实施例1
原料（按重量份数计）：
基料15份、天然彩砂60份、成膜助剂3份（丙二醇丁醚）、润湿剂0.1份（聚氧乙烯烷基酚醚）、钛白粉0.5份、分散剂0.1份、防腐防霉剂0.1份、多功能助剂0.1份、消泡剂0.05份、增稠剂0.01份、去离子水10份。
制备方法：
S1、先将去离子水放入分散机中，然后在分散机转速为300-400rpm的条件下，向分散机中依次加入分散剂、润湿剂、消泡剂总量的一半，加完后提速到1000rpm搅拌5-10min，然后调节转速为600rpm，缓慢加入钛白粉，加完后调高速1200rpm，高速分散5min，再加入成膜助剂搅拌5min；
S2、在500rpm低速搅拌下缓慢加入纯丙乳液，并加入多功能助剂，调节pH值至8-9，搅拌时间为5-10min，制得浆料；
S3、边搅拌边将天然彩砂按照粒径从细到粗依次加入，加完后提速到700-800rpm搅拌5-10分钟，再加入防腐防霉剂、剩余消泡剂，最后滴加增稠剂搅拌10min，调节好黏度后出料，制得高性能砂壁状涂料。
实施例2
基料20份、天然彩砂70份、成膜助剂4份（丙二醇丁醚和丙二醇甲醚醋酸酯）、润湿剂0.2份（聚氧乙烯脂肪醇醚）、钛白粉1份、分散剂0.2份、防腐防霉剂0.2份、多功能助剂0.3份、消泡剂0.1份、增稠剂0.05份、去离子水12份。
以上高性能砂壁状涂料的制备方法同实施例1。
实施例3
基料25份、天然彩砂75份、成膜助剂5份（丙二醇甲醚醋酸酯）、润湿剂0.3份（聚氧乙烯烷基酚醚和聚氧乙烯脂肪醇醚）、钛白粉1.5份、分散剂0.25份、防腐防霉剂0.3份、多功能助剂0.4份、消泡剂0.15份、增稠剂0.1份、去离子水14份。
以上高性能砂壁状涂料的制备方法同实施例1。
实施例4
基料30份、天然彩砂80份、成膜助剂6份（乙二醇丁醚和丙二醇苯醚）、润湿剂0.5份（聚氧乙烯烷基酚醚，聚氧乙烯脂肪醇醚和聚氧乙烯聚氧丙烯嵌段共聚物）、钛白粉2份、分散剂0.3份、防腐防霉剂0.5份、多功能助剂0.5份、消泡剂0.2份、增稠剂0.2份、去离子水15份。
以上高性能砂壁状涂料的制备方法同实施例1。
试验效果
本发明高性能砂壁状涂料实施例1-4检测性能参数如下：
表1，按照JG/T 24-2000的要求进行性能测定，结果如下：
Claims (10)
1.一种高性能砂壁状涂料，其特征在于，包括以下重量份数的原料：基料15-30份、天然彩砂60-80份、成膜助剂3-6份、润湿剂0.1-0.5份、钛白粉0.5-2份、分散剂0.1-0.3份、防腐防霉剂0.1-0.5份、多功能助剂0.1-0.5份、消泡剂0.05-0.2份、增稠剂0.01-0.2份、去离子水10-15份，所述基料包括纯丙乳液和苯丙乳液的混合物，纯丙乳液和苯丙乳液的重量比为1-2:1。
2.根据权利要求1所述的高性能砂壁状涂料，其特征在于：所述天然彩砂的粒径为10-120目，其中，10-20目占15%，20-40目占30%，40-80目占45%，80-120占10%。
3.根据权利要求1所述的高性能砂壁状涂料，其特征在于：所述成膜助剂为丙二醇丁醚、丙二醇甲醚醋酸酯、十二碳醇酯、乙二醇丁醚、丙二醇苯醚的一种或几种组合。
4.根据权利要求1所述的高性能砂壁状涂料，其特征在于：所述润湿剂为聚氧乙烯烷基酚醚，聚氧乙烯脂肪醇醚，聚氧乙烯聚氧丙烯嵌段共聚物的一种或几种组合。
5.根据权利要求1所述的高性能砂壁状涂料，其特征在于：所述分散剂为聚羧酸钠盐阴离子分散剂。
6.根据权利要求1所述的高性能砂壁状涂料，其特征在于：所述防腐防霉剂为对羟基苯甲酸乙酯和2-苯并咪唑氨基甲酸甲酯的混合物，对羟基苯甲酸乙酯和2-苯并咪唑氨基甲酸甲酯的重量比为1:1。
7.根据权利要求1所述的高性能砂壁状涂料，其特征在于：所述多功能助剂为有机胺类pH调节剂。
8.根据权利要求1所述的高性能砂壁状涂料，其特征在于：所述增稠剂为聚氨酯类增稠剂。
9.根据权利要求1所述的高性能砂壁状涂料，其特征在于：所述消泡剂为金属皂类消泡剂和石蜡类消泡剂的混合物，金属皂类消泡剂和石蜡类消泡剂的重量比为1:0.5。
10.如权利要求1所述的高性能砂壁状涂料的制备方法，其特征在于，包括以下步骤：
S1、先将去离子水放入分散机中，然后在分散机转速为300-400rpm的条件下，向分散机中依次加入分散剂、润湿剂、消泡剂总量的一半，加完后提速到1000rpm搅拌5-10min，然后调节转速为600rpm，缓慢加入钛白粉，加完后调高速1200rpm，高速分散5min，再加入成膜助剂搅拌5min；
S2、在500rpm低速搅拌下缓慢加入纯丙乳液，并加入多功能助剂，调节pH值至8-9，搅拌时间为5-10min，制得浆料；
S3、边搅拌边将天然彩砂按照粒径从细到粗依次加入，加完后提速到700-800rpm搅拌5-10分钟，再加入防腐防霉剂、剩余消泡剂，最后滴加增稠剂搅拌10min，调节好黏度后出料，制得高性能砂壁状涂料。
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