Measuring Steady-State Thermal Resistance of Insulation Materials: Heat Flow Meter Method (GB/T 10295-1988)

The applicable standard for determining the steady-state thermal resistance and related properties of insulation materials using the heat flow meter method, as defined in GB/T 10295-1988 (Determination of Steady-State Thermal Resistance and Related Properties—Heat Flow Meter Method).

The method supports the measurement of thermal conductivity for materials such as plastics, glass, fibers, and foams. In practice, a heat flow meter apparatus is used to quantify heat flux through a specimen under controlled temperature conditions, enabling calculation of thermal resistance and conductivity in the steady state.

Relevant test standards referenced alongside GB/T 10295-1988 include: - GB/T 3392-82: Test method for thermal conductivity of plastics (guarded hot plate method) - GB/T 3139-2005: Thermal conductivity test method for fiber-reinforced plastics (including fiberglass-reinforced plastics) - GB/T 10801.1 and GB/T 10801.2: Specifications and methods for polystyrene foam for thermal insulation - ISO/DIS 8301: Thermal insulation—Determination of steady-state thermal resistance and related properties—Heat flow meter apparatus - ASTM C518-2004: Standard test method for steady-state thermal transmission properties by means of the heat flow meter apparatus - EN 12667: Thermal performance of building materials and products—Determination of thermal resistance by means of guarded hot plate and heat flow meter methods

The referenced standards are used by material-performance testing organizations, research institutes, factory quality-control departments, and universities for teaching and research.