GB/T 1036-2008

This standard specifies a test method for measuring the coefficient of linear thermal expansion of plastics within the temperature range of -30°C to 30°C using a vitreous silica dilatometer. It is applied in quality control and material characterization for plastic manufacturers, research laboratories, and industries requiring precise dimensional stability data, such as automotive, electronics, and construction. The method ensures consistent evaluation of how plastic materials expand or contract under controlled temperature changes, critical for design and application in cold or variable thermal environments.