Why the instantaneous high temperature causes the quartzite to blow up

Number of visits:information sources:Shandong Kang Jieli New Materials Co., LtdRelease time:2018/7/24

After decades of rapid development of quartz stone in China, the use of quartz stone in domestic clothing is becoming more and more high, especially the use of cabinet table is the most common in family decoration. The problems of explosion and discoloration have become more and more obvious, such as explosion and local discoloration, which have become the biggest problems for quartz stone manufacturers and professionals.


Quartz stone slab is composed of more than 90% natural quartz and 7% resin and other additives such as adjusting adhesion, pigment, curing agent. Artificial quartzite is formed by vacuum vacuum, high frequency vibration, hardening, hard texture, compact structure with other decorative materials unparalleled in wear resistance (more than 6-7 MW hardness), pressure resistance (density 2.3g/ cubic centimeter), high temperature resistance (temperature 300 C), corrosion resistance, anti osmosis without any pollution sources and Radiation source, green artificial stone.
Many people here wonder why the quartz stone can burst and discolor when it is placed directly on the table since it can withstand temperatures up to 300 degrees. Because of the 7% resin solvent in the quartzite material mentioned above, it is easy to rise and cold shrink after high temperature. Because of the local sudden heat, it is easy to crack or discoloration in the bottom of the container, if the expansion joint is not reserved when the table is installed.
In fact, this is also the physical property of quartz stone. Quartzite is a brittle polymer composite material, which also has the characteristics of thermal expansion and contraction. It also has some mechanical properties, such as shrinkage stress, impact toughness, fracture elongation and so on. When the material can not bear the internal stress caused by thermal expansion and contraction, and the cracking occurs when the external impact is serious.

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