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    分析环氧地坪漆为何变色以及怎样预防技巧

    2019-07-31 15:21:29 无锡盛发地坪科技有限公司 阅读

    我们都应该了解环氧地坪漆中会含有一定的金属粉末颜料,而这种金属粉末颜料如果被残留的游离酸腐蚀,就会出现颜料变成乌绿色,这种情况就改变了环氧地坪漆的颜色,通常这种现象在存储的时候就会发生。常见场所中,我们常会看到一些环氧地坪漆渐渐变色的现象,这些现象是如何产生的?我们又能怎么防止这种现象发生,下面由南京能高科技发展有限公司为您分析详情:有一些是在包装桶内存放,时间一久,环氧地坪漆会发生涂装后颜色与原色不符、颜色变浅或变深等现象。如果遇到这种现象,可以采用什么方法来补救?

    We should all know that epoxy floor paint contains certain metal powder pigments, and if the metal powder pigments are corroded by residual free acid, the pigments will turn dark green, which changes the color of epoxy floor paint. Usually this phenomenon will occur during storage. In common places, we often see some phenomena of gradual discoloration of floor paint, how do these phenomena occur? How can we prevent this phenomenon? Next, Nanjing Neng Hi-Tech Development Co., Ltd. will analyze the details for you: Some are stored in the packaging bucket, and over time, epoxy floor paint will be painted. After the color does not match the original color, the color becomes lighter or darker. If we encounter this phenomenon, what can we do to remedy it? 1、 由于环氧复色漆中几种颜料的密度不同,在贮存的过程中,重质颜料会逐渐下沉,轻质颜料相对应逐渐上浮。所以使用时如不充分搅拌均匀,环氧地坪涂料在进行涂装的话,环氧地坪涂装完工后会和原色不符。这种很容易解决,只要涂料在施工前记得要充分搅拌均匀就可以了。

    1. Because of the different density of several pigments in epoxy paint, heavy pigments will gradually sink and light pigments will gradually float during storage. Therefore, if the use is not fully stirred evenly, the epoxy floor coating will not match the original color after finishing. This is easy to solve, as long as the paint before construction remember to fully mix evenly.


    2、环氧地坪漆中酸值较高的清漆容易与铁质包装桶发生化学反应,使环氧清漆透明度降低,从而导致颜色变深。不要将酸值较高的涂料用体统包装,即可。

    2. The varnish with higher acid value in epoxy floor paint is easy to react with iron packaging barrel, which reduces the transparency of epoxy varnish and leads to darker color. Don't pack the coatings with high acid value in a systematic way.


    3、涂料中个别填颜料的耐热和耐光性不好,有些树脂耐候性较差,遇光易发黄,特别表现在环氧树脂类涂料中。这就要根据需要选择涂料配比中的树脂和填颜料。

    3. The heat and light resistance of individual filling pigments in coatings are not good. Some resins have poor weather resistance and yellowing when exposed to light, especially in epoxy coatings. It is necessary to choose resin and filling pigments in the proportion of coatings according to the need.


    4、如果金属粉末状颜料在贮存中,受环氧漆中残存游离酸的腐蚀作用,就容易发生发乌或是变绿灯现象。因此,金属类颜料与清漆应该分开包装贮存。

    4. If metal powder pigments are corroded by residual free acids in epoxy paint during storage, they are prone to blackening or turning green. Therefore, metal pigments and varnishes should be packaged and stored separately.


    5、环氧地坪漆中部分填颜料会发声化学变化,失去填颜料固有的着色力,引起褪色或是变色现象。所以我们在涂料配方设计时,应注意不要使用能与树脂或主剂发声化学变化的填颜料。在环氧地坪施工之前,首先经过试验,将不同类型的涂料搭配混合调色,调制合适后,再使用。如果环氧地坪漆的本身酸值较高在于存储的铁桶发生化学反应,那么颜色也会变深,而如果是环氧地坪漆本身的耐候性不够好,在受到阳光的暴晒后也会出现变黄的现象,这是环氧地坪漆本身发生的质变,导致它的固有着色力降低了,所以我们在选择环氧地坪漆的时候也要考虑到这一点,在不同地点使用考虑到的方面也是不同的,这样就能从根本上避免环氧地坪漆出现变色的现象了。还有一种存储时发生变色的原因则是由颜料的密度差异造成的,密度大的往下沉而密度小的往上升,从而导致颜料出现分层的现象,在分层后就出现了明显的颜色差异,但是这些情况都是可以通过方法进行解决的。对于这种在存储中颜料本身出现的变色现象,我们可以通过充分的搅拌来进行处理,这样可以使分离的颜料在充分的混合,颜色就会均匀的呈现出来。还有我们可以将金属颜料与环氧地坪漆分开存储,同时也不要用铁桶进行高酸性颜料的存储,我们可以选择树脂基颜料,这样的颜料耐光性也比较好。

    5. Some of the filling pigments in epoxy floor paint will change sonochemistry, lose the inherent dyeing power of the filling pigments, and cause discoloration or discoloration. Therefore, when designing the formulation of coatings, we should pay attention not to use filling pigments which can change with the acoustical chemistry of resin or main agent. Before the construction of epoxy flooring, first of all, through experiments, different types of coatings are mixed and toned, and then used after appropriate modulation. If the higher acid value of epoxy floor paint is due to the chemical reaction of the storage barrel, the color will become darker. If the weather resistance of epoxy floor paint itself is not good enough, the yellowing phenomenon will occur after exposure to sunlight. This is the qualitative change of epoxy floor paint itself, resulting in its inherent coloring power. Reduced, so we have to take this into account when choosing epoxy floor paint, and use in different places to consider different aspects, so that can fundamentally avoid the phenomenon of discoloration of epoxy floor paint. Another cause of discoloration during storage is due to the density difference of the pigments. The density of the pigments sinks down while the density of the pigments rises slightly, which leads to the phenomenon of layering of the pigments. After layering, there are obvious color differences, but these situations can be solved by methods. For this discoloration phenomenon in the storage of pigments themselves, we can deal with it by adequate stirring, so that the separated pigments can be fully mixed, and the color will be evenly presented. In addition, we can store metal pigments separately from epoxy floor paint, but also do not use barrels for storage of highly acidic pigments, we can choose resin-based pigments, such pigments have better light resistance.


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