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假山出现褪色的原因

来源:  更新时间:2022-10-14
我们经常看到一些假山。它们刚刚建成两三年。有些已经褪成水泥色,有些甚至脱壳。褪色对假山有很大的影响。首先,它影响假山的美观。其次,它失去了色层的保护,大大降低了假山的防水性。小编分析了业内100多个案例,得出了假山容易褪色的原因。今天小编将向大家解释。
We often see some rockeries. They have only been completed for two or three years. Some have faded into cement color, and some have even shelled. Fading has a great effect on rockery. First, it affects the beauty of rockery. Secondly, it has lost the protection of the color layer, greatly reducing the water resistance of the rockery. Xiao Bian analyzed more than 100 cases in the industry and found out the reasons why rockeries are easy to fade. I will explain to you today.
我们发现,冬季生产的塑石假山更有可能在后期褪色。通过比较和分析,得出结论,冬季生产的塑石假山具有较高的反碱率,这将大大破坏颜色层,导致颜色层脱落。反碱主要与假山表层中使用的水泥有关。在低温和高水比的情况下,硅酸盐水泥在固化后会渗透到碱中。在山上涂色之前,增加碱性底漆可以减少反碱的发生。
We found that the plastic stone rockery produced in winter is more likely to fade in the later period. Through comparison and analysis, it is concluded that the plastic stone rockery produced in winter has a high anti alkali rate, which will greatly damage the color layer and cause the color layer to fall off. The anti alkali is mainly related to the cement used in the surface of the rockery. Under the condition of low temperature and high water ratio, Portland cement will penetrate into alkali after solidification. Before painting on the mountain, adding alkaline primer can reduce the occurrence of anti alkali.
还有以下几个方面是假山容易脱色的原因:
There are also several reasons why rockery is easy to decolor:
1、颜料的选择是错误的。假山行业常用的颜料有:氧化铁颜料型、丙烯酸颜料型、水基色浆型和油漆型。在其中,丙烯酸颜料是一种绘画颜料,适用于室内场所。其抗紫外线能力差,不易在室外假山使用;油漆与水泥基材料的相容性差。它可以应用于室内场所。当应用于室外制作假山时,皮肤会在高温下爆炸。
1. The choice of paint is wrong. The pigments commonly used in the rockery industry are: iron oxide pigment, acrylic pigment, water-based color paste and paint. Among them, acrylic pigment is a kind of painting pigment, which is suitable for indoor places. Its anti ultraviolet ability is poor, and it is not easy to use in outdoor rockery; The compatibility between paint and cement-based materials is poor. It can be applied to indoor places. When applied to outdoor rockery, the skin will explode under high temperature.
在室外状态下,假山颜色的错误选择是塑假山颜色褪色的主要原因。在施工过程中,我们只考虑丙烯颜料的易配色,不了解丙烯颜料的耐候性差。
In the outdoor state, the wrong choice of the color of the rockery is the main reason for the color fading of the plastic rockery. In the construction process, we only considered the easy color matching of propylene pigment, but did not know the poor weather resistance of propylene pigment.
二,上色前不要清洗。假山上色前,要仔细清理假山表面,不留灰尘和砾石。如果灰尘和砾石留在山体表面,就会被用作隔离材料,将假山的砂浆层和颜色层隔离开来。随着时间的推移,日晒雨淋的作用会剥离颜色层,导致假山褪色。
2、 Do not wash before painting. Before the rockery is painted, the surface of the rockery shall be carefully cleaned to avoid dust and gravel. If dust and gravel are left on the mountain surface, they will be used as isolation materials to separate the mortar layer and color layer of the rockery. As time goes by, the effect of sun and rain will peel off the color layer, causing the rockery to fade.
3、颜料中的抗紫外线添加剂,大部分塑石假山表层为水泥基材料,所选颜料也以水基材料为主。在这些水基材料中,耐候性是需要考虑的主要条件之一。室外环境不可避免地暴露在阳光和雨水中,乳胶漆和色浆不能长时间保持,因此抗紫外线添加剂至关重要。在一些塑石假山项目中,为了节约成本,降低耐候性和抗紫外线乳液的使用,颜色在未来五年内会逐渐脱落。
3. Most of the anti ultraviolet additives in the pigments are cement based materials on the surface of plastic stone rockery, and the selected pigments are mainly water-based materials. In these water-based materials, weather resistance is one of the main conditions to be considered. The outdoor environment is inevitably exposed to sunlight and rain water. Latex paint and color paste cannot be kept for a long time, so anti ultraviolet additives are crucial. In some plastic stone rockery projects, in order to save costs and reduce the use of weather resistance and UV resistant lotion, the color will gradually fall off in the next five years.
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