General knowledge of coating: excellent thermal insulation effect of building thermal insulation coating

Core tip: with the further development of building energy conservation in China, the role of building coatings in the external insulation system is becoming more and more important, and the proportion of application is increasing, so the research on building insulation coatings is imperative The thermal insulation performance of building thermal insulation coating is measured by the value of heat transfer coefficient K, which means that the air temperature difference between two sides of the enclosure is 10 ℃, and the heat transferred by unit area in unit time, the smaller the value of K, the better the thermal insulation performance The thermal insulation performance can be expressed by D-value, which is an indicator of the attenuation speed of the envelope to the temperature wave The higher the D value is, the more periodic the temperature is Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Home of coatings: with the further development of building energy conservation in China, the role of building coatings in the external thermal insulation system is becoming more and more important, and the proportion of application is increasing, so the research on building thermal insulation coatings is imperative The thermal insulation performance of building thermal insulation coating is measured by the value of heat transfer coefficient K, which means that the air temperature difference between two sides of the enclosure is 10 ℃, and the heat transferred by unit area in unit time, the smaller the value of K, the better the thermal insulation performance The thermal insulation performance can be expressed by D-value, which is an indicator of the attenuation speed of the envelope to the temperature wave The higher the D value is, the greater the attenuation ability of the periodic temperature wave is, and the smaller the temperature fluctuation of the inner surface of the wall and roof is That is to say, the thermal insulation performance is good in summer, and the room temperature fluctuation of the air-conditioned room can also be reduced correspondingly The performance indexes of building thermal insulation coating mainly include: thermal conductivity, bulk density, maximum use temperature, compressive strength, moisture content, linear expansion coefficient, flexural strength and pH value, etc (1) Thermal conductivity of thermal insulation coating: thermal conductivity is thermal conductivity The heat transfer property of thermal insulation coating is called thermal conductivity It is a parameter of heat transfer capacity of thermal insulation coating, reflecting the thermal conductivity of the coating, and is the main thermal physical characteristics of thermal insulation coating The thermal conductivity is closely related to other physical properties (such as density and moisture content) of the coating, the internal structure of the coating and the size of the insulation layer Zhisheng zs-211 reflective heat insulation coating is made of special Zhisheng Weihua heat preservation solution and nano hollow ceramic beads with high-efficiency heat insulation materials The coating has low thermal conductivity, high-efficiency heat insulation, high temperature resistance, fire-retardant, insulation pressure resistance, sound insulation and environmental protection new generation of heat insulation materials Zs-211 reflective thermal insulation coating can form a three-dimensional network hollow structure which is connected by closed micro beads Such nano hollow ceramic micro beads and micro beads form a stack of static air groups, that is, a thermal insulation unit The thermal conductivity of the coating is 0.033w/m · K, which can effectively prevent heat conduction The thermal insulation grade of the coating is 26 Ω, the thermal reflectance is more than 90%, the heat insulation and heat preservation inhibition efficiency is about 90%, which can keep more than 70% of the space heat without loss Zs-211 reflective heat insulation coating is applied on the building wall, which can effectively prevent cold and cold The shielding rate of air conditioning is high The coating is more than 3mm, the heat insulation rate reaches 90%, and the indoor temperature can be increased by more than 5 ℃ in winter (2) bulk density of thermal insulation coating: the bulk density of the thermal insulation coating dried at 100 ℃ and in a loose state It has a problem of the best unit weight, that is, under the best unit weight, it has smaller thermal conductivity and better insulation effect In order to save energy and reduce the structural load of heat preservation pipe supports and hangers, the heat preservation coating with small volume weight shall be used as far as possible The unit weight of the high-efficiency thermal insulation coating shall not be greater than 100kg / m3 (3) maximum service temperature of thermal insulation coating: the maximum service temperature refers to the limit temperature that the thermal insulation coating can withstand in long-term safe and reliable operation The use temperature of general thermal insulation coating refers to the long-term use of thermal insulation coating at this temperature Its physical and chemical properties are stable and meet the technical requirements of design and operation The higher the temperature resistance, the higher the fire resistance (4) Compressive strength and flexural strength of thermal insulation coating: the compressive strength is the maximum pressure load per unit of original cross section when the coating is damaged due to compressive force The compressive strength of the coating is closely related to the processing technology and the porosity of the coating According to the technical guidelines for equipment and pipeline insulation (GB4272-92), the compressive strength of hard products shall not be less than 0.33mpa For soft, semi-rigid and loose thermal insulation coating, generally it will not be damaged under compression load, so the compressive strength is not specified The flexural strength is the moment of couple force per unit area when the coating is damaged under bending load Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant 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