It is common to see some plastic rockeries, which have faded to cement color in two or three years since they were built, and some even show shelling phenomenon. The influence of discoloration on plastic rockery is magnificent. First, it affects the beauty of rockery, secondly, it loses the protection of color layer, and the waterproof of plastic rockery is greatly reduced. Through the analysis of more than 100 cases in the industry, Nanjing Yuantai has come to the conclusion that the plastic rockery is easy to fade. Today, it will explain for you.
We found that the plastic rockery manufactured in winter is more likely to fade in the later period. Through comparison and analysis, it is concluded that the plastic rockery manufactured in winter has a higher alkali reversal rate, which will greatly destroy the color layer and cause the color layer to be scattered. Anti-alkali is mainly related to the cement used in the surface layer of rockery. Portland cement will seep alkali when it meets water after solidification under the condition of low temperature and high water ratio stirring. Adding anti-alkali primer can reduce the appearance of anti-alkali before coloring the mountain.
The reasons why plastic rockery is easy to fade are as follows:
First, the selection of pigments is wrong. The commonly used pigments in our rockery industry are: iron oxide pigments, propylene pigments, water-based pigments and paints. Among them, propylene pigments are painting pigments, which are mainly used in indoor places. Their anti-ultraviolet ability is poor, and they are not easy to be used in outdoor rockery. The compatibility between paint and cement-based materials is poor, so they can be used in indoor places. In the outdoor plastic rockery, there will be skin explosion under high temperature.
In the outdoor state, the main reason for the discoloration of plastic artificial hills is the incorrect selection of propylene pigments for color on plastic artificial hills. During the construction, only the easy-to-mix color of propylene pigments was considered, but the poor weatherability of propylene pigments was not understood.
2. Unliquidated before coloring. Before coloring, it is necessary to carefully liquidate the surface of the rockery. Dust and gravel, such as dust and gravel, can not be left on the surface of the rockery. It will be used as an isolating material to separate the mortar layer and the color layer of the rockery. With the passage of time, the effect of sunshine and rain will strip the color layer and cause the rockery to fade.
3. Anti-ultraviolet additives in pigments, most of the plastic rockery surface layers are cement-based materials, and the selected pigments are mainly water-based materials. In these water-based materials, weather resistance is one of the main conditions to consider. Outdoor environment can not be prevented from sunshine and rain, latex paint and color paste can not persist, anti-ultraviolet additives are indispensable, and some plastic rockery projects. In order to save money and reduce the use of weatherproof and anti ultraviolet emulsion, color will gradually fade in the next five years.
More information about Jinan rockery production can be consulted by clicking on our official website: http://www.lounge-f.com