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    Home > Coatings News > Paints and Coatings Market > Construction preparation conditions for water-based high-temperature coatings

    Construction preparation conditions for water-based high-temperature coatings

    • Last Update: 2021-01-04
    • Source: Internet
    • Author: User
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    China Coatings Online News Information:
    substrate painting water-based high-temperature coating substrate also to achieve polishing, increase the adhesion of the coating. When the roughness value of the substrate is greater than or equal to the thickness value of the coating, it is easy to lead to uneven paint film, premature pitting of peaks, and the retention of bubbles at the bottom of the valley. Such as the construction of high temperature anti-corrosion coating requires water conservation and drying, in the case of roughness greater than the thickness of the film, the possibility of corrosion magnified. This example also shows that the rough surface is not suitable for thinning paint film. In the spraying process design and quality planning, each link of the inspection, experimental program should be clear and detailed.
    water-based high-temperature coating substrate polishing is self-test, inspection when the light is sufficient. The roughness detection method of substrate roughness control plate ISO8503, needle measuring instrument, imprinting tape method. Roughness model has blast roughness comparison model, sand cast roughness comparison model, processing surface roughness comparison model, cast surface roughness comparison model, corrosion-resistant surface treatment Sa2.5 and other roughness comparison model. According to the demand of acid-alkali anti-corrosion market, material characteristics improve, Beijing Zhisheng Weihua Chemical Co., Ltd. experienced years of development and research, the introduction of ZS Zhisheng high temperature acid-resistant alkali anti-corrosion coating, temperature resistance can reach 2300 degrees C, is a new type of inorganic nanopolymer depth synthesis, silicon carbide, fine crystal oxidation Aluminum, zinc oxide, paint energy and substate surface generation has a physical and chemical dual protection effect, through the chemical bonds and substations firmly combined with inorganic acid-resistant alkali-resistant polymer anti-corrosion coating, environmental pollution-free, long service life, anti-corrosion performance reached the international advanced level, is in line with environmental protection requirements of high-tech replacement products. High temperature anti-corrosion coating temperature to be high, coating to dense, corrosion resistance to strong, Beijing Zhisheng Weihua ZS-811 high temperature anti-corrosion coating temperature resistance 2300 degrees C using Zhisheng Weihua special silicon-oxygen-carbon synthetic high-temperature inorance solution and Ultra-micro-inorganic polymer flaky metal oxides as fillers, coating for a long time up to temperature resistance of 2300 degrees C, coating by high temperature solution and filler lattice cross-linking, dense glass phase state, high temperature Tg phase boundary stability, can effectively prevent the invasion of oxidizing media, to avoid the production of oxidizing lattice.
    coating acid resistance alkaline good, high hardness, high hardness, coating can be long-term fire-resistant barbecue, anti-oxidation and anti-corrosion effect in hot fire, effective anti-oxidation diffusion can reach more than 90%. Zhisheng Weihua ZS-811 high temperature anti-corrosion coating, temperature resistance 2300 degrees C contains a large number of anti-aging corrosion-resistant factors and OH active groups, it and the active components in the filler and steel, or other materials active surface rapid cross-link reaction, resulting in three-dimensional structure of inormerable polymers Anti-corrosion coating, Zhisheng Weihua ZS-811 high temperature anti-corrosion coating will be the coating and substation into one, forming a heat-resistant high temperature anti-corrosion coating with electrochemical protection and physical shielding, especially suitable for working in high temperature, corrosion environment of steel, or other material structures under long-lasting high temperature protection.
    water-based high temperature coating substrate grinding leakage point detection can determine the continuity of the film, stable thickness, to help find the anti-corrosion layer is too thin, leakage of metal or the presence of pinholes, but also the structure of complex products film thickness measurement of an effective auxiliary means. The instrument used is an electric spark detector. Special paint materials such as 1021 high temperature closed coating, its typical thickness is less than 125 m, but it is not recommended to use cross-dressing method. When using the cross-craying method, it is necessary to distinguish the spacing according to the thickness of the membrane. If the teeth are blunt, repair them in time. Judge whether the water-based high temperature coating has dry curing, with nail pressing, observe whether there is indentation powdering.
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