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Why is the thick glass easier to burst when pouring hot water?

  • Author:Fanyu
  • Source:www.glass.com.cn
  • Release on:2017-11-28
Generally poured boiling water into the glass, thicker glass cups more prone to the phenomenon of glass burst. Because the glass is cold, when poured hot water, the inner wall expands rapidly due to the expansion of heat and contraction, but because the glass is a hot bad conductor and the cup wall is thick, the temperature will not spread quickly to the outer wall, so the inner wall expands;
The thinner the cup, because the heat conduction is faster when pouring hot water, the internal and external wall temperature difference is small, the internal and external wall deformation difference is also small, so it is not easy to rupture. If you pour water slowly and lightly, and shake the cup at the same time, so that the cup is evenly heated inside and out, you can better avoid burst.