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90年代末,人们对自身的健康及周围的环境提出了更高的要求。随着环保意识的增强,在内墙涂料方面,大力发展低毒性、低污染的健康型涂料,成为时代所需。 90年代以前,使用的内墙涂料以缩醛类为主,目前不少地区还在普遍使用。这种涂料成本低,生产工艺简单,它主要由聚乙烯醇缩醛类物质、膨润土、填料等组成。其中缩醛类物质里的甲醛等含量较高,在室内,尤其在通风条件不好的情况下,会使人产生流泪、胸闷、呼吸困难等不适,对人体健康危害较大。 90年代开始,以聚合物乳液为主要咸膜物质的乳胶漆得到了较大规模的应用。它主要由乳液、颜填料、助剂等组成。这种乳胶漆其甲醛释放量远远低于以往的缩醛类涂料,对人体及环境的影响比较小,在一定程度上可以符合环保要求。
In the late 1990s, people put forward higher requirements for their own health and the surrounding environment. With the growing awareness of environmental protection, the development of low-toxicity, low-pollution, healthy-type paints in interior wall paints has become a necessity for the times. Prior to the 1990s, the interior wall coatings used were mostly acetal-based, and they are still widely used in many areas. The paint has low cost and simple production process. It is mainly composed of polyvinyl acetal, bentonite, filler and other components. The content of formaldehyde in the acetal substances is relatively high. Indoors, especially in the case of poor ventilation, can cause discomfort such as tearing, tightness in the chest, difficulty in breathing, etc., which are harmful to human health. Since the 1990s, latex paints with polymer emulsions as the main salty film material have been applied on a larger scale. It is mainly composed of emulsions, pigments, fillers and additives. The formaldehyde release of this latex paint is far lower than that of conventional acetal paints. The impact on the human body and the environment is relatively small, and it can meet environmental protection requirements to some extent.