Suggestion of weatherability test scheme for Jiangsu colored stone tile

Release time: 2021-12-22

Jiangsu color stone tile weather resistance test program recommendations:

1. The weathering test of roof tiles of Jiangsu colored stone tiles is to simulate the repeated effects of sudden rainstorm and winter and summer temperature after high temperature exposure in summer. Jiangsu color stone tile accelerated aging test is an important test item to test and evaluate the quality of roof brick system. The weather resistance test has a good correlation with the actual project and can well reflect the actual weather resistance. The large-scale weather resistance test requires that after 20 cycles of high temperature (70°C)-rainfall (15°C) and 20 heating (50°C)-freezing (-20°C), the sample should be free of hollowing, falling off and cracking. Jiangsu color stone tile product comprehensive performance test has the following characteristics.

2. High frequency: For manufacturers who pay attention to technology and testing, in addition to strict quantitative single-index testing and analysis, qualitative construction performance and comprehensive performance testing should be carried out for each product development; formula adjustment and raw material replacement.

3, high timeliness: shopping center is like a battlefield. In order to meet the needs of the market, enterprises often have higher requirements for the timeliness of testing, and the services provided by most testing institutions are often difficult to meet the testing requirements of enterprises due to institutional reasons.

4. Sunlight simulation: Xenon arc radiation is a commonly used aging test method for Jiangsu colored stone tiles in China, but xenon arc radiation and ultraviolet aging tests are widely used abroad. The two methods are based on completely different principles. The xenon lamp irradiation test chamber simulates all solar spectra, including ultraviolet, visible and infrared light, in order to simulate sunlight. The UV aging test does not attempt to simulate sunlight, but only the damaging effects of sunlight. It is based on this principle. For durable materials exposed to the outdoors for a long time, the aging damage caused by short-wave ultraviolet radiation is great. After comprehensive cost-effective analysis: our company intends to use ultraviolet ordinary drying lamps to simulate direct sunlight to ensure that sunlight damage and temperature damage are close to the actual situation.

Temperature simulation: According to the requirements of industry standards, the temperature control range of the weather-resistant laboratory should reach -25 ℃ ~ 30 ℃. However, due to the high cost of refrigeration equipment, according to the temperature range of cold winter and hot summer areas, we temporarily simulate at 0 ℃ ~ 70 ℃, as follows:

(1)0 ℃ ~ 10 ℃: ice is mainly used for cooling laboratories, and ice-water mixture is used for spray cooling experimental bricks.

(2)10 ℃ ~ 50 ℃: The temperature control box is mainly used to adjust the laboratory temperature, and its adjustment range is from room temperature to 50 ℃. At the same time, the laboratory is heated by auxiliary electric heating.

(3)50 ℃ ~ 70 ℃: summer sunshine time is long, the solar radiation intensity is high. The comprehensive temperature of the external surface of the general horizontal roof is 60~70 ℃, the comprehensive temperature of the west wall is 50~60 ℃, and the comprehensive temperature of the east wall is 45~50 ℃. According to this requirement, we use 5-10 groups of drying lamps and 2 groups of ultraviolet lamps to simulate direct sunlight for baking to ensure that the surface temperature of the experimental wall reaches the ideal temperature and sufficient irradiation time.

6. Accessories: The above test method does not mean that our products can meet these requirements, but we can perform the same test on the colored metal stone tiles produced by Jiangsu colored stone tile adhesive and other similar colored stone tile products. To distinguish the advantages and disadvantages.

Keywords: Colored stone tile, Jiangsu colored stone tile

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