CN107033681A - 一种墙体用抗开裂水性涂料 - Google Patents

一种墙体用抗开裂水性涂料 Download PDF

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CN107033681A
CN107033681A CN201710397815.1A CN201710397815A CN107033681A CN 107033681 A CN107033681 A CN 107033681A CN 201710397815 A CN201710397815 A CN 201710397815A CN 107033681 A CN107033681 A CN 107033681A
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潘海洋
刘梅霞
王成
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HEFEI LYUJIE ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Abstract

本发明公开了一种墙体用抗开裂水性涂料，其原料按重量份包括：基材150‑170份，蓖麻粕复合物6‑10份，沉淀碳酸钙8‑16份，蛭石粉15‑25份，云母粉6‑12份，椰壳纤维8‑12份，氢氧化镁4‑6份，三乙醇胺4‑6份，附着力促进剂1‑2份，流平剂2‑4份，抗菌剂2‑4份，消泡剂2‑4份，防霉剂2‑4份，润湿剂2‑4份。蓖麻粕复合物采用如下工艺制备：将蓖麻粕、聚丙烯酸钠、水均质处理，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解，调节体系pH值至中性，灭活，加入沉淀硫酸钡研磨，过滤，洗涤，干燥至恒重，粉碎得到蓖麻粕复合物。

Description

一种墙体用抗开裂水性涂料
技术领域
本发明涉及涂料技术领域，尤其涉及一种墙体用抗开裂水性涂料。
背景技术
随着人类环保意识的提升，建筑涂料正由过去以保护墙体、装饰为目的的性能向着多功能、绿色化方向发展。保温涂料综合了涂料及保温材料的双重特点，其干燥后形成有一定强度及弹性的保温层，从而起到保温作用。但目前水性保温涂料虽具有一定的保温性能，现在水性保温涂料普遍存在着耐水性差，抗墙体开裂性差的缺点。
发明内容
基于背景技术存在的技术问题，本发明提出了一种墙体用抗开裂水性涂料，不仅成膜干燥时间短，硬度高、附着力强，而且采用水作为稀释溶剂，有效降低了有害溶剂的释放，产品环境友好；同时防水效果好，且即使在强烈震动下涂膜也不会产生裂纹。
本发明提出的一种墙体用抗开裂水性涂料，其原料按重量份包括：基材150-170份，蓖麻粕复合物6-10份，沉淀碳酸钙8-16份，蛭石粉15-25份，云母粉6-12份，椰壳纤维8-12份，氢氧化镁4-6份，三乙醇胺4-6份，附着力促进剂1-2份，流平剂2-4份，抗菌剂2-4份，消泡剂2-4份，防霉剂2-4份，润湿剂2-4份。
优选地，蓖麻粕复合物采用如下工艺制备：将蓖麻粕、聚丙烯酸钠、水均质处理，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解，调节体系pH值至中性，灭活，加入沉淀硫酸钡研磨，过滤，洗涤，干燥至恒重，粉碎得到蓖麻粕复合物。
优选地，蓖麻粕复合物的制备工艺中，蓖麻粕、聚丙烯酸钠、水、沉淀硫酸钡的重量比为10-20：4-8：25-35：25-45。
优选地，蓖麻粕复合物采用如下工艺制备：按重量份将10-20份蓖麻粕、4-8份聚丙烯酸钠、25-35份水均质处理30-50min，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解40-60min，调节体系pH值至中性，灭活，加入25-45份沉淀硫酸钡研磨至平均粒径为40-100μm，过滤，洗涤，75-85℃干燥至恒重，粉碎得到蓖麻粕复合物。
优选地，基材按重量份包括：水性氯化聚烯烃树脂、水性丙烯酸树脂、水性聚氨酯分散体。
优选地，基材按重量份包括：水性氯化聚烯烃树脂100-120份，水性丙烯酸树脂20-30份，水性聚氨酯分散体20-40份。
本发明采用水性氯化聚烯烃树脂、水性丙烯酸树脂、水性聚氨酯分散体作为基材，不仅涂膜的各性能指标与溶剂型涂料相当，配合三乙醇胺、附着力促进剂作用，不仅硬度高、附着力强，而且采用水作为稀释溶剂，有效降低了有害溶剂的释放，产品环境友好；在蓖麻粕复合物中，蓖麻粕、聚丙烯酸钠匀质处理后，加入中性蛋白酶、谷氨酰胺转氨酶对蓖麻粕适当酶解，不仅与聚丙烯酸钠分散性极好，而且表面形成缺陷，与沉淀硫酸钡混合研磨，结合程度高，韧性好，分散作用极好，乳化性能优异，同时遮瑕效果显著，耐磨、耐酸碱性能优异；蓖麻粕复合物与沉淀碳酸钙、蛭石粉、云母粉、椰壳纤维、氢氧化镁的分散效果好，固化后结合程度高，不仅填充性能优异，硬度高，防水效果好，且即使在强烈震动下涂膜也不会产生裂纹。本发明水性涂料成膜干燥时间短，坚硬度好，同时还具有很好的延伸性能及耐热性能。
具体实施方式
下面，通过具体实施例对本发明的技术方案进行详细说明。
实施例1
本发明提出的一种墙体用抗开裂水性涂料，其原料按重量份包括：基材150份，蓖麻粕复合物10份，沉淀碳酸钙8份，蛭石粉25份，云母粉6份，椰壳纤维12份，氢氧化镁4份，三乙醇胺6份，附着力促进剂1份，流平剂4份，抗菌剂2份，消泡剂4份，防霉剂2份，润湿剂4份。
实施例2
本发明提出的一种墙体用抗开裂水性涂料，其原料按重量份包括：基材170份，蓖麻粕复合物6份，沉淀碳酸钙16份，蛭石粉15份，云母粉12份，椰壳纤维8份，氢氧化镁6份，三乙醇胺4份，附着力促进剂2份，流平剂2份，抗菌剂4份，消泡剂2份，防霉剂4份，润湿剂2份。
基材按重量份包括：水性氯化聚烯烃树脂、水性丙烯酸树脂、水性聚氨酯分散体。
蓖麻粕复合物采用如下工艺制备：将蓖麻粕、聚丙烯酸钠、水均质处理，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解，调节体系pH值至中性，灭活，加入沉淀硫酸钡研磨，过滤，洗涤，干燥至恒重，粉碎得到蓖麻粕复合物。
实施例3
本发明提出的一种墙体用抗开裂水性涂料，其原料按重量份包括：基材155份，蓖麻粕复合物9份，沉淀碳酸钙10份，蛭石粉22份，云母粉8份，椰壳纤维11份，氢氧化镁4.5份，三乙醇胺5.5份，附着力促进剂1.2份，流平剂3.5份，抗菌剂2.5份，消泡剂3.5份，防霉剂2.5份，润湿剂3.5份。
基材按重量份包括：水性氯化聚烯烃树脂100份，水性丙烯酸树脂30份，水性聚氨酯分散体20份。
蓖麻粕复合物采用如下工艺制备：按重量份将15份蓖麻粕、6份聚丙烯酸钠、30份水均质处理，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解，调节体系pH值至中性，灭活，加入35份沉淀硫酸钡研磨，过滤，洗涤，干燥至恒重，粉碎得到蓖麻粕复合物。
实施例4
本发明提出的一种墙体用抗开裂水性涂料，其原料按重量份包括：基材165份，蓖麻粕复合物7份，沉淀碳酸钙14份，蛭石粉18份，云母粉10份，椰壳纤维9份，氢氧化镁5.5份，三乙醇胺4.5份，附着力促进剂1.8份，流平剂2.5份，抗菌剂3.5份，消泡剂2.5份，防霉剂3.5份，润湿剂2.5份。
基材按重量份包括：水性氯化聚烯烃树脂120份，水性丙烯酸树脂20份，水性聚氨酯分散体40份。
蓖麻粕复合物采用如下工艺制备：按重量份将10份蓖麻粕、8份聚丙烯酸钠、25份水均质处理50min，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解40min，调节体系pH值至中性，灭活，加入45份沉淀硫酸钡研磨至平均粒径为40μm，过滤，洗涤，85℃干燥至恒重，粉碎得到蓖麻粕复合物。
实施例5
本发明提出的一种墙体用抗开裂水性涂料，其原料按重量份包括：基材160份，蓖麻粕复合物8份，沉淀碳酸钙12份，蛭石粉20份，云母粉9份，椰壳纤维10份，氢氧化镁5份，三乙醇胺5份，附着力促进剂1.5份，流平剂3份，抗菌剂3份，消泡剂3份，防霉剂3份，润湿剂3份。
基材按重量份包括：水性氯化聚烯烃树脂110份，水性丙烯酸树脂25份，水性聚氨酯分散体30份。
蓖麻粕复合物采用如下工艺制备：按重量份将20份蓖麻粕、4份聚丙烯酸钠、35份水均质处理30min，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解60min，调节体系pH值至中性，灭活，加入25份沉淀硫酸钡研磨至平均粒径为100μm，过滤，洗涤，75℃干燥至恒重，粉碎得到蓖麻粕复合物。
将本发明实施例5所得水性涂料与市售水性涂料进行对比，将两者所得涂膜进行性能测试，其结果如下：
检测项目 单位 本发明实施例5 市售水性涂料
固体含量 ％ 77.36 69.02
拉伸强度 MPa 2.84 1.95
断裂伸长率 ％ 218 160
不透水性(0.5MPa，5h) / 无渗透 渗透破裂
抗渗性(砂浆背水面) MPa 1.30 0.82
耐热性(60℃，6h) / 涂膜无起层、开裂 涂膜鼓泡、开裂
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (6)

1.一种墙体用抗开裂水性涂料，其特征在于，其原料按重量份包括：基材150-170份，蓖麻粕复合物6-10份，沉淀碳酸钙8-16份，蛭石粉15-25份，云母粉6-12份，椰壳纤维8-12份，氢氧化镁4-6份，三乙醇胺4-6份，附着力促进剂1-2份，流平剂2-4份，抗菌剂2-4份，消泡剂2-4份，防霉剂2-4份，润湿剂2-4份。
2.根据权利要求1所述墙体用抗开裂水性涂料，其特征在于，蓖麻粕复合物采用如下工艺制备：将蓖麻粕、聚丙烯酸钠、水均质处理，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解，调节体系pH值至中性，灭活，加入沉淀硫酸钡研磨，过滤，洗涤，干燥至恒重，粉碎得到蓖麻粕复合物。
3.根据权利要求1或2所述墙体用抗开裂水性涂料，其特征在于，蓖麻粕复合物的制备工艺中，蓖麻粕、聚丙烯酸钠、水、沉淀硫酸钡的重量比为10-20：4-8：25-35：25-45。
4.根据权利要求1-3任一项所述墙体用抗开裂水性涂料，其特征在于，蓖麻粕复合物采用如下工艺制备：按重量份将10-20份蓖麻粕、4-8份聚丙烯酸钠、25-35份水均质处理30-50min，加入中性蛋白酶、谷氨酰胺转氨酶进行酶解40-60min，调节体系pH值至中性，灭活，加入25-45份沉淀硫酸钡研磨至平均粒径为40-100μm，过滤，洗涤，75-85℃干燥至恒重，粉碎得到蓖麻粕复合物。
5.根据权利要求1-4任一项所述墙体用抗开裂水性涂料，其特征在于，基材按重量份包括：水性氯化聚烯烃树脂、水性丙烯酸树脂、水性聚氨酯分散体。
6.根据权利要求1-5任一项所述墙体用抗开裂水性涂料，其特征在于，基材按重量份包括：水性氯化聚烯烃树脂100-120份，水性丙烯酸树脂20-30份，水性聚氨酯分散体20-40份。
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