CN101585690B - 凹凸棒膏状外墙涂料的生产方法 - Google Patents
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Abstract
本发明公开了一种凹凸棒膏状外墙涂料的生产方法，其技术方案的要点是，凹凸棒膏状外墙涂料的生产方法是：配料、粉碎、搅拌、分散、溶解、均质、乳化、消泡、研磨、罐装为凹凸棒膏状外墙涂料的成品。凹凸棒膏状外墙涂料是由膏状凹凸棒石粘土、聚乙烯醇超细粉末、速溶硅酸钠、超细玻璃粉、金红石型钛白粉、辛醇和去离子水组成。凹凸棒膏状外墙涂料附着力好，具有较好的耐久性、耐水性、耐候性、耐沾污性和耐冻融性，凹凸棒膏状外墙涂料是白色基准涂料，可以直接进行调色生产各种不同颜色的彩色涂料，凹凸棒膏状外墙涂料的生产方法适用于生产环保型外墙涂料。
Description
技术领域
本发明涉及涂料，具体涉及一种凹凸棒膏状外墙涂料的生产方法。
背景技术
外墙涂料是建筑涂料中用量最大的涂料品种，由于直接处于大气环境中，自施工成膜开始，即受到大气和自然界中各种因素的影响，外墙涂料在施工中常会发生流挂、起泡、刷痕、起皮、剥落、失光、褪色、粉化、龟裂、剥离和涂膜粗糙等问题，因而对外墙涂料的性能要求是严格的，必须具有足够好的耐水性、耐候性、耐沾污性和耐冻融性，才能保证有较好的装饰效果和耐久性。
中国专利授权公告号为：CN1024354，授权公告日：1994年4月27日，名称为“聚乙烯醇与膨润土等复合建筑涂料”，公开了“一种聚乙烯醇与膨润土等复合建筑涂料，可以提高涂料的粘结性、遮盖力、成膜性、稳定性和涂刷性，可以减少传统涂料(106涂料)中基料和颜料的用量，成本由350～450元/吨降到200～250元/吨，适用于医院、商店、办公楼和民用建筑的内墙涂料，经济效益显著。”
上述专利的不足之处是该项技术中选用膨润土为主要原料，而膨润土中常伴生有石英、长石、沸石、石膏、方解石、黄铁矿、氧化铁矿物以及岩屑等杂质，而这些伴生的矿物对膨润土的化学成分以及工艺性能影响较大，没有经过提纯的膨润土的胶体粘度、分散性和悬浮性能都比较差，因此会影响到涂料的产品质量。
发明内容
本发明的目的是克服现有技术中不足之处，提供一种凹凸棒膏状外墙涂料的生产方法。
凹凸棒膏状外墙涂料的生产方法是：配料、粉碎、搅拌、分散、溶解、均质、乳化、消泡、研磨、罐装为凹凸棒膏状外墙涂料的成品。
凹凸棒膏状外墙涂料是由膏状凹凸棒石粘土、聚乙烯醇超细粉末、速溶硅酸钠、超细玻璃粉、金红石型钛白粉、辛醇和去离子水组成。
凹凸棒石粘土是一种含水富镁纳米级多孔纤维状硅酸盐粘土矿物，当凹凸棒石粘土中的凹凸棒含量≥80％以上时，其比表面积较大，可达500m2/g以上。使用“凹凸棒的湿法选矿工艺”和“凹凸棒矿造浆生产工艺”，将凹凸棒石粘土中的水云母、石英、蛋白石和碳酸盐等矿物筛选去除掉，得到一种凹凸棒矿泥浆；经过钠化处理和酸化处理后的膏状凹凸棒石粘土，是一种触变性和胶黏性特好的天然硅酸镁铝凝胶，pH值呈中性，凹凸棒石粘土的粘度、膨胀容、胶质价、白度、比表面积、吸附性能和悬浮率都得到了较大的提高。
凹凸棒石粘土土质细腻，表面光滑，质地较轻，潮湿时呈粘性和可塑性，其粘度可达到3000mPa·s以上，有利于原料之间的粘结；凹凸棒石粘土干燥收缩率小，且不产生龟裂，能提高外墙涂料对建筑物墙面的附着力，凹凸棒石粘土还有较好的粘滞性和触变性，膏状凹凸棒石粘土加入涂料溶液中，在外力搅拌下快速形成稳定的不分层的凝胶体，凹凸棒石粘土涂料涂膜的显微照片显示，其晶体呈网状排列，均匀地分布在涂料中，所以涂膜表面耐磨性能好。
凹凸棒石粘土具有选择吸附能力，如对极性分子水、氨、甲醇、乙醇、醛、酮、烯、烃等能被通道孔吸收，而对非极性分子如氧等则不能进入孔道，利用这种吸附特性，能吸附空气中的甲醛和挥发性有机物，净化空气。
聚乙烯醇超细粉末，具有良好的冷水速溶性、优异的成膜性、较强的粘接性和渗透性，能提高凹凸棒膏状外墙涂料的附着力和耐摩擦性能，防止涂料施工后产生粉化、龟裂和剥离。
速溶硅酸钠能快速溶解于水，加入凹凸棒膏状外墙涂料后，能渗入缝隙和孔隙中，固化的硅凝胶能堵塞毛细孔通道，提高涂料的密度和强度，从而提高外墙涂料的抗风化能力和耐寒性。
超细玻璃粉具有硬度高、抗刮伤性强、耐阳光暴晒和抗腐蚀的特点，超细玻璃粉添加在凹凸棒膏状外墙涂料中，由于膏状凹凸棒石粘土粘稠度较好，不会产生下沉，有利于分散于涂料中，成膜后可增加涂料丰满度，提高涂料的耐磨性、耐沾污性和耐冻融性。
金红石型钛白粉耐光性非常强，是建筑涂料的基础白色颜料，对涂料的装饰性、耐候性、耐化学稳定性等方面起着关键作用，特别适用于外墙涂料。
辛醇是一种消泡剂，辛醇加入凹凸棒膏状外墙涂料后，通过降低水的表面张力来达到消泡作用，同时还能起到助溶剂的作用。
本发明通过下述技术方案予以实现：
1、凹凸棒膏状外墙涂料的生产方法：①将凹凸棒膏状外墙涂料的配料加入粉碎打浆机内进行粉碎，粉碎打浆混合均匀后为凹凸棒膏状外墙涂料的混合物；②将步骤①获得的混合物输入高粘度真空搅拌机中，凹凸棒膏状外墙涂料的配料在真空下经过搅拌、分散、溶解、均质、乳化和消泡后为凹凸棒膏状外墙涂料的半成品；③将步骤②获得的凹凸棒膏状外墙涂料的半成品输入多功能胶体磨中进行研磨，颗粒细度小于0.015毫米，罐装为凹凸棒膏状外墙涂料的成品。
所述凹凸棒膏状外墙涂料的配料按重量百分比由下列组分组成：膏状凹凸棒石粘土50～85％、聚乙烯醇超细粉末1～10％、速溶硅酸钠1～10％、超细玻璃粉3～8％、金红石型钛白粉0.1～5％、辛醇0.01～1％和去离子水5～40％。
所述膏状凹凸棒石粘土的生产工艺是：(1)选用凹凸棒矿泥浆为主体原料，凹凸棒矿泥浆按重量百分比由下列组分组成：凹凸棒石粘土15～35％和水65～85％；(2)钠化处理：将凹凸棒矿泥浆输送到搅拌机内，添加氢氧化钠后进行搅拌，经过搅拌后的凹凸棒矿泥浆输送到钠化池中陈化1～7天；钠化配料按重量百分比由下列组分组成：凹凸棒矿泥浆95～99.5％和氢氧化钠0.5～5％；(3)酸化处理：将钠化后凹凸棒矿泥浆输送到搅拌机内，添加浓度为98％的硫酸后进行搅拌，经过搅拌后的凹凸棒矿泥浆输送到酸化池中陈化1～3天；酸化配料按重量百分比由下列组分组成：钠化后的凹凸棒矿泥浆92～99.5％和浓度为98％的硫酸0.5～8％；(4)水洗和筛去杂质：将酸化后的凹凸棒矿泥浆输送到沉淀池中，重新加水浸泡，用气泵冲翻，筛去杂质，沉淀后放出浸泡水，并将沉淀后的泥浆输送到成品池内，沉淀后的泥浆为膏状凹凸棒石粘土；水洗配料按重量百分比由下列组分组成：酸化后的凹凸棒矿泥浆25～65％和水35～75％；膏状凹凸棒石粘土按重量百分比由下列组分组成：凹凸棒石粘土5～40％和水60～95％。
上述生产工艺是采用由本发明人于2008年8月25日申请的“膏状凹凸棒石粘土的生产工艺”，中国专利公开号为：CN101348257，公开日：2009年1月21日。
所述凹凸棒矿造浆生产工艺是：将凹凸棒矿输入搅拌机内搅拌，经挤出机挤压成片状后，再次输入搅拌机内搅拌，经挤出机挤压成片状后自然晾晒，晾干的凹凸棒矿输送到原料池中浸泡，用气泵冲翻，沉淀后放出浸泡水，筛去杂质，输入半成品池中，重新加水浸泡，用气泵冲翻，沉淀后放出浸泡水，并将沉淀后的泥浆输送到成品池内，即为凹凸棒矿泥浆成品。
上述生产工艺是采用由本发明人于2004年1月6日申请的“凹凸棒矿造浆生产工艺”，中国专利授权公告号为：CN1287965C，授权公告日：2006年12月6日。
凹凸棒膏状外墙涂料附着力好，具有较好的耐久性、耐水性、耐候性、耐沾污性和耐冻融性。
凹凸棒膏状外墙涂料是白色基准涂料，可以直接进行调色生产各种不同颜色的彩色涂料。
凹凸棒膏状外墙涂料的生产方法适用于生产环保型外墙涂料。
具体实施方式
下面结合实施例对本发明作进一步的描述：
1、凹凸棒膏状外墙涂料的生产方法：①将凹凸棒膏状外墙涂料的配料加入粉碎打浆机内进行粉碎，粉碎打浆混合均匀后为凹凸棒膏状外墙涂料的混合物；②将步骤①获得的混合物输入高粘度真空搅拌机中，凹凸棒膏状外墙涂料的配料在真空下经过搅拌、分散、溶解、均质、乳化和消泡后为凹凸棒膏状外墙涂料的半成品。③将步骤②获得的凹凸棒膏状外墙涂料的半成品输入多功能胶体磨中进行研磨，颗粒细度小于0.015毫米，罐装为凹凸棒膏状外墙涂料的成品。
所述凹凸棒膏状外墙涂料的配料按重量百分比由下列组分组成：膏状凹凸棒石粘土65％、聚乙烯醇超细粉末6％、速溶硅酸钠5％、超细玻璃粉4％、金红石型钛白粉1.3％、辛醇0.2％和去离子水18.5％。
Claims (1)
1.一种凹凸棒膏状外墙涂料的生产方法，其特征在于，凹凸棒膏状外墙涂料的生产方法：①将凹凸棒膏状外墙涂料的配料加入粉碎打浆机内进行粉碎，粉碎打浆混合均匀后为凹凸棒膏状外墙涂料的混合物；②将步骤①获得的混合物输入高粘度真空搅拌机中，凹凸棒膏状外墙涂料的配料在真空下经过搅拌、分散、溶解、均质、乳化和消泡后为凹凸棒膏状外墙涂料的半成品；③将步骤②获得的凹凸棒膏状外墙涂料的半成品输入多功能胶体磨中进行研磨，颗粒细度小于0.015毫米，罐装为凹凸棒膏状外墙涂料的成品；
所述凹凸棒膏状外墙涂料的配料按重量百分比由下列组分组成：膏状凹凸棒石粘土50～85％、聚乙烯醇超细粉末1～10％、速溶硅酸钠1～10％、超细玻璃粉3～8％、金红石型钛白粉0.1～5％、辛醇0.01～1％和去离子水5～40％；
所述膏状凹凸棒石粘土的生产工艺是：(1)选用凹凸棒矿泥浆为主体原料，凹凸棒矿泥浆按重量百分比由下列组分组成：凹凸棒石粘土15～35％和水65～85％；(2)钠化处理：将凹凸棒矿泥浆输送到搅拌机内，添加氢氧化钠后进行搅拌，经过搅拌后的凹凸棒矿泥浆输送到钠化池中陈化1～7天；钠化配料按重量百分比由下列组分组成：凹凸棒矿泥浆95～99.5％和氢氧化钠0.5～5％；(3)酸化处理：将钠化后凹凸棒矿泥浆输送到搅拌机内，添加浓度为98％的硫酸后进行搅拌，经过搅拌后的凹凸棒矿泥浆输送到酸化池中陈化1～3天；酸化配料按重量百分比由下列组分组成：钠化后的凹凸棒矿泥浆92～99.5％和浓度为98％的硫酸0.5～8％；(4)水洗和筛去杂质：将酸化后的凹凸棒矿泥浆输送到沉淀池中，重新加水浸泡，用气泵冲翻，筛去杂质，沉淀后放出浸泡水，并将沉淀后的泥浆输送到成品池内，沉淀后的泥浆为膏状凹凸棒石粘土；水洗配料按重量百分比由下列组分组成：酸化后的凹凸棒矿泥浆25～65％和水35～75％；膏状凹凸棒石粘土按重量百分比由下列组分组成：凹凸棒石粘土5～40％和水60～95％；
所述凹凸棒矿泥浆生产工艺是：将凹凸棒矿输入搅拌机内搅拌，经挤出机挤压成片状后，再次输入搅拌机内搅拌，经挤出机挤压成片状后自然晾晒，晾干的凹凸棒矿输送到原料池中浸泡，用气泵冲翻，沉淀后放出浸泡水，筛去杂质，输入半成品池中，重新加水浸泡，用气泵冲翻，沉淀后放出浸泡水，并将沉淀后的泥浆输送到成品池内，即为凹凸棒矿泥浆成品。
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