If the compressive strength of thermal insulation materials for industrial products does not meet the standard requirements, it will affect the thermal insulation performance and installation effects, and easily cause fractures. If the combustion performance is not up to standard, the product will not have the flame retardant effect, and it will burn easily, and there will be hidden safety risks. Therefore, we must pay attention to the quality of thermal insulation materials!
What common insulation materials are around us?
Insulation is to increase the heat insulation layer on the outer surface of the equipment, pipes and accessories to reduce heat dissipation to the surrounding environment. According to the flow direction, it can be divided into thermal insulation and cold insulation. Therefore, thermal insulation materials can be divided into two major directions: thermal insulation materials and cold insulation materials.
At present, there are thousands of manufacturers of thermal insulation materials in China. There are more than a dozen categories and hundreds of varieties of products. The applicable temperature range is from minus 196 ° C to 1000 ° C. The level of technology and equipment has also been greatly improved. The currently used thermal insulation materials mainly include the following four types-foam-type thermal insulation materials, composite silicate thermal insulation materials, calcium silicate products thermal insulation materials and fibrous thermal insulation materials.
The performance indicators and general selection principles of thermal insulation materials
The performance of thermal insulation materials is mainly based on its five aspects-thermal conductivity, density, compressive strength, water absorption and heat resistance. When selecting, pay attention to the following principles!
Among them, how to detect the thermal conductivity of thermal insulation materials? In addition to the above principles, factors such as construction, price, and transportation should be considered when selecting insulation materials.
Thermal conductivity (or thermal conductivity) is often used to measure the thermal and thermal insulation properties of materials. It is an important parameter of materials. We also often use it when testing materials. The smaller the thermal conductivity, the better the thermal insulation performance of the material. Various methods for measuring this coefficient have been developed. They have different application fields, measurement ranges, accuracy, accuracy, and sample size requirements. The current methods for measuring the thermal conductivity are divided into two methods, the steady state method and the non-steady state method. For large categories, Dr. Materials still uses a form to organize it for everyone.
The steady state method can be divided into heat flow meter method and thermal protection plate method.
We have just summarized one of the methods for measuring the thermal conductivity (steady-state method). Now let's briefly talk about the non-steady-state method.
(Equipment for hotline method) Non-steady-state method can be divided into hotline method and laser flash method.
The quality of industrial products is related to the safety of life and property of the enterprise / society / public. Do not ignore the quality of thermal insulation materials.