CN111073408A - 化工车间用变色建筑涂料及其制备、应用 - Google Patents
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Abstract
Description
技术领域
本发明涉及建筑涂料、油漆领域,尤其涉及一种化工车间用变色建筑涂料及其制备、应用。
背景技术
化工生产车间的空气湿度对生产具有重要影响,若能在化工生产车间墙体涂覆一种能够预测、捕捉空气湿度变化的功能涂料,通过涂料颜色变化来得知车间空气湿度的变化,将比空气湿度仪更有效、便捷。
硫酸铜溶液滴在纸上,利用其会与空气水分反应变色的特点,监测空气湿度的变化,根据不同的变色情况大概判断出空气的湿度。另外观察硫酸铜和水分相遇发生变色的速度可以判断空气湿度的大小,这种通过外加随空气湿度变化而变色的物质是一种常用的方法。但是该反应仅在常温常压下很稳定,受热失去结晶水后既分解,在干燥空气中还会逐渐风化,不具有实用性。
发明内容
本发明针对现有技术的不足,提供一种能够随环境湿度而变色的化工车间用变色建筑涂料。
本发明通过以下技术手段实现解决上述技术问题的:一种化工车间用变色建筑涂料,所述涂料包括以下重量份数的原料:变色单体8-10份、丙烯酸40-50份、甲基丙烯酸甲酯28-30份、碱金属盐0.4-0.5份、N-甲基甲酰胺12-13份、乳化剂0.5-0.6份、引发剂0.15-0.2份、流平剂0.025-0.026份、消泡剂0.025-0.026份、填料1.6-1.7份;
其中,所述变色单体的化学式Ι,如下所示:
上述方案的优点在于:本发明利用变色单体,与苯乙烯、丙烯酸甲酯、丙烯酸等进行乳液聚合反应制备具有变色功能的建筑外墙水性涂料,涂覆在化工车间的室内建筑面上,能够直接观测室内湿度变化;当空气里含水量较大时,碱金属盐微溶于于水,形成游离的金属离子,溴酚蓝与金属离子形成的配合物发生配位-解离过程,使溴酚蓝产生内酯环式与醌式两种结构的互变,引起紫外-可见吸收光谱的最大吸收峰发生位移,从而引起颜色的变化。
同时,以酚红骨架为母体的酚红衍生物与高分子材料牢固结合,使得本发明的变色建筑涂料变色稳定,不易被水冲洗掉。
第二方面,本发明还提供上述化工车间用变色建筑涂料的制备方法,包括以下步骤:
S1、将变色单体、丙烯酸、甲基丙烯酸甲酯、N-甲基甲酰胺、引发剂依次投入反应釜中,加热至78-82℃,反应4h,得到预聚体;
S2、将乳化剂、剩余甲基丙烯酸甲酯、丙烯酸、引发剂混合均匀,加热至78-82℃,反应4h,同时滴加第2步预聚体,4h内滴完,反应2h得到乳液;
S3、在所述乳液中加入流平剂、消泡剂、碱金属盐、填料,混合均匀既得到变色建筑涂料。
上述方案的优点在于:本发明变色建筑涂料的制备方法是先变色单体、丙烯酸、甲基丙烯酸甲酯、乳化剂、引发剂通过乳液聚合法混合均匀,再加入碱金属盐、流平剂、消泡剂、填料搅拌混合,过程简单且成本低廉。
第三方面,本发明还提供上述化工车间用变色建筑涂料的应用:将变色建筑涂料均匀涂覆于化工车间室内建筑表面,成膜固化后,即可投入使用。
附图说明
图1为本实施例1的反应方程式示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1-3
实施例1-3提供一种化工车间用变色建筑涂料及其制备、应用,其中变色建筑涂料的组分及其含量如表1所示:
表1实施例1-3变色建筑涂料的组分及其含量
变色建筑涂料的制备包括以下步骤:
S1、取乙烯苯甲酰氯或乙烯苯甲酰溴溶于100毫升N-甲基甲酰胺溶剂(实施例3为130mlN-甲基甲酰胺溶剂),溴酚蓝溶于200毫升N-甲基甲酰胺溶剂(实施例3为270mlN-甲基甲酰胺溶剂),将乙烯苯甲酰氯溶于通过滴加的方式滴加到溴酚蓝溶液中,滴加时间为2h,反应温度为25℃,制备出含双键的变色单体,图1为乙烯基酰氯与溴酚蓝的反应方程式。
S2、预聚体制备:取一部分甲基丙烯酸甲酯、丙烯酸、引发剂(过氧化苯甲酰)和N-甲基甲酰胺,第1步反应产物含双键的变色单体,加热至78-82℃,反应4h。
S3、甲基丙烯酸甲酯、丙烯酸,引发剂(过氧化苯甲酰),乳化剂(OP-10和十二烷基磺酸钠的混合物,OP-10和十二烷基磺酸钠的质量比为2:1),加热至80±2℃,反应4h,同时滴加第2步预聚体,4h内滴完,反应2h后,结束。
S4、将第3步制备的乳液,加入流平剂(聚醚硅油)、消泡剂(聚醚)、碳酸钙,碳酸钠天然二氧化硅,钛白粉制备出化工车间用变色建筑涂料。
化工车间用变色建筑涂料的应用具体为:将制备的变色建筑涂料均匀涂覆于化工车间室内建筑表面,成膜固化后,即可投入使用。
为进一步说明本发明的有益效果,选用本发明的实施例1制备的变色建筑涂料,进行变色效果的性能测试。
依据JB/T9327-1999白度计标准,将制备的变色建筑涂料涂覆在聚四氟乙烯板上,固化成膜,膜厚为1mm,然后用白度计(WSB-2)测试白度,在不同的湿度下,测量白度变化情况,并记录在表2内。
表2变色实验结果
湿度 | 30% | 40% | 50% | 60% | 70% | 80% | 90% | 100% |
例1 | 12 | 18 | 23 | 28 | 31 | 35 | 41 | 45 |
通过白度测试,说明制备的化工车间用变色建筑涂料会随着空气湿度的增加颜色逐渐变深。可用作化工车间墙体涂料,通过观测变色建筑涂料颜色的变化,便能直观判断车间空气湿度大小,为空气湿度要求严格控制的化工产品工艺控制提供预判。
需要说明的是,在本文中,如若存在第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (7)
2.如权利要求1所述的化工车间用变色建筑涂料,其特征在于,所述变色单体的制备方法,包括以下步骤:将乙烯基酰卤溶于N-甲基甲酰胺溶剂里形成乙烯基酰氯溶液,溴酚蓝溶于N-甲基甲酰胺溶剂形成溴酚蓝溶液,所述溴酚蓝溶液滴加所述乙烯基酰氯溶液,保证溴酚蓝处于过量状态,待乙烯基酰氯溶液全部滴加完毕后,得到所述变色单体成品,所述乙烯基酰卤与溴酚蓝的质量比为1:5。
3.如权利要求2所述的化工车间用变色建筑涂料,其特征在于,所述乙烯基酰卤为乙烯基酰氯或乙烯基酰溴中的任意一种。
4.如权利要求3所述的化工车间用变色建筑涂料的制备方法,其特征在于,包括以下步骤:
S1、将变色单体、丙烯酸、甲基丙烯酸甲酯、N-甲基甲酰胺、引发剂依次投入反应釜中,加热至78-82℃,反应4h,得到预聚体;
S2、将乳化剂、甲基丙烯酸甲酯、丙烯酸、引发剂混合均匀,加热至78-82℃,反应4h,同时滴加第2步预聚体,4h内滴完,反应2h得到乳液;
S3、在所述乳液中加入流平剂、消泡剂、碱金属盐、填料,混合均匀既得到变色建筑涂料。
5.如权利要求4所述的化工车间用变色建筑涂料的制备方法,其特征在于,所述碱金属盐为碳酸钙,硫酸镁、碳酸镁、碳酸钠中的一种或几种混合。
6.如权利要求5所述的化工车间用变色建筑涂料的制备方法,其特征在于,所述填料为钛白粉、天然二氧化硅中的一种或混合。
7.如权利要求1所述的化工车间用变色建筑涂料的应用,所述应用具体为:将所述变色建筑涂料均匀涂覆于化工车间室内建筑表面,成膜固化后,即可投入使用。
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CN101368002A (zh) * | 2008-06-02 | 2009-02-18 | 上海大学 | 偶氮染料丙烯酸酯、其共聚乳胶涂料染色水性粘合剂及其制备方法 |
CN103205136A (zh) * | 2013-03-07 | 2013-07-17 | 山东上开化学原色乳液有限公司 | 染料单体及彩色聚合物乳液与它们的制备方法与应用 |
CN104419113A (zh) * | 2013-09-10 | 2015-03-18 | 上海炬通实业有限公司 | 湿度敏感变色功能材料及其制备方法 |
KR101679419B1 (ko) * | 2014-12-09 | 2016-11-25 | 주식회사 씨티에이 | 화학물질 감지용 도료 조성물의 제조방법, 이를 이용하여 제조되는 화학물질 감지용 도료 조성물 및 시트 |
CN104449319A (zh) * | 2014-12-10 | 2015-03-25 | 三棵树涂料股份有限公司 | 特效湿敏指示墙面白度水性涂料及其制备方法 |
WO2016201191A1 (en) * | 2015-06-11 | 2016-12-15 | Red Alert Wax, Llc | Floor coating compositions and related methods |
CN109517406A (zh) * | 2018-11-12 | 2019-03-26 | 安徽富瑞雪化工科技股份有限公司 | 一种变色聚氨酯丙烯酸酯染料的制备方法 |
CN109796559A (zh) * | 2019-01-16 | 2019-05-24 | 安徽清彩科技有限公司 | 无土栽培用彩色酸碱指示性水晶吸水树脂及其制备方法 |
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