Quanzhou Hongjia Machinery Co.,Ltd

High quality product, professional service, being the core supplier in laser industry!

Home > Knowledge > Content
How to choose the superior performance of exterior wall thermal insulation material
- Jan 19, 2017 -

1, check the appearance of the product. Requires less breakage, consistent color, precise size (length and width tolerance 4mm, thickness tolerance 2mm).
2, product density is measured. Choose a product, called weight, measure the volume, you can calculate the density, in satisfying the requirements of the premise, density, the smaller the better.
3, Jane strength. Mainly to meet strength requirements of thermal insulation material handling needs are generally not high, red brick strength of 1/10-1/20 but not broken at a touch, a pinch on the loose. According to the standard requirements, compressive strength above 0.5MPa, where generic products should be able to withstand a person standing on it (product area should be larger than the foot area).
4, flammability: burning behaviour refers to the building materials combustion or fire when all the physical and chemical changes that occur, this performance by the surface ignition and flame propagation, heat, smoke, charring, weight loss, measured and characteristics of toxic products. Organic insulating materials prone to fuel and inorganic thermal insulation material is fire burning.
5, thermal load contraction temperature: thermal load contraction temperature used to represent stability to wet insulation.
6, hygroscopic: hygroscopic properties of materials can absorb moisture in the air. Chemical composition and structure and material of this nature. For inorganic non-metallic materials in addition to outside surfaces and materials relating to the property, and the micro-structure of materials, if multiple pores, its moisture absorption capacity is relatively strong, along with pore diameter of the structure. Organic polymer materials as well. Adsorption of water molecules on metal surface properties, surface structure and properties of metals and status.