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Quartz stone countertop cracking? What makes it resistant to temperature 300°?

- Jan 16, 2019 -

After ten years of rapid development of quartz stone, quartz stone is now used more and more in home decoration, especially the use of cabinet countertops is most common in home decoration. The problems that have followed the leaks have become more and more obvious. For example, bursting and partial discoloration have become the biggest problems that plague quartz stone manufacturers and industry professionals.

Quartz stone plate is composed of more than 90% natural quartz and 7% resin and other additives such as adjusting bonding, coloring materials and curing agents. The artificial quartz stone is formed by vacuum vacuum, high-frequency vibration molding, heating and solidification, its texture is hard, the structure is compact, and it is incomparable with other decorative materials (Mohs hardness 6-7 or above) and pressure resistance (density 2.3g). / cubic centimeter), high temperature resistance (300 ° C temperature resistance), corrosion resistance, penetration resistance does not contain any pollution sources and radiation sources, green and artificial artificial stone.

In this case, many people will wonder that the quartz stone can withstand temperatures up to 300°. Why does the heat container directly on the table cause cracking and discoloration? Because the above-mentioned quartz stone plate material contains 7% of the resin solvent, it is prone to heat up and down when it is exposed to high temperature. It is easy to crack or the bottom mark of the container due to local sudden heat, such as when the expansion joint is not reserved when the table is installed. Discoloration.

In fact, this is also the physical properties of quartz stone. Quartz stone is a brittle polymer composite material, which also has the characteristics of thermal expansion and contraction. It also has certain mechanical properties such as shrinkage stress, impact toughness and elongation at break. When the material cannot withstand the internal stress caused by thermal expansion and contraction. Cracking occurs when subjected to severe external impact.