A kind of heat-and-humidity resistant two-component waterproof coating and preparation method thereof
A waterproof coating, two-component technology, applied in the direction of coating, construction, building structure, etc., can solve the problems of poor waterproof and impermeability effect, poor moisture and heat resistance stability, mildew corrosion, etc., to achieve good moisture and heat stability, Good humidity and heat stability, and the effect of improving water resistance
Active Publication Date: 2022-02-15
中电保力(北京)科技有限公司
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Problems solved by technology
The above-mentioned waterproof coatings disclosed in the prior art all adopt epoxy resin modified acrylic resin as the base material core material, and have achieved good adhesion and chemical resistance, but in actual application, the modified acrylic resin Poor resistance to humidity and heat, the mechanical properties of the waterproof membrane formed by the waterproof coating are easy to decline, and cannot adapt to the deformation of the structure to play the role of long-term waterproof and anti-seepage, especially in the hot and humid southern region or the humid and hot underground engineering environment. If the penetration effect becomes poor, serious safety problems will occur, especially for electrical equipment that will cause hazards such as electrical short circuit, electrical equipment flash explosion, mildew corrosion, etc.
Method used
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Examples
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preparation example 1
[0044] S1: 2.4 parts of alkylphenol polyoxyethylene ether OP-10, 1.2 parts of sodium dodecylsulfonate, 1 part of initiator dibenzoyl peroxide, 0.2 parts of potassium persulfate, 10 parts of epoxy monomer Part E-44, 100 parts of deionized water are added to the container and stirred to obtain a pre-emulsified mixture for subsequent use;
[0045] S2: Under nitrogen atmosphere, add 10 parts of (1-fluorovinyl)methyldiphenylsilane and 20 parts of butyl methacrylate into the polymerization kettle containing deionized water, stir evenly, and keep stirring;
[0046] S3: First, add 1 / 3 of the pre-emulsified mixture obtained in step S1 to the reaction kettle of step S2, raise the temperature of the reaction kettle to 90°C, keep the constant temperature for 48 minutes, and start adding the remaining pre-emulsified mixture obtained in step S1 dropwise. , continue the constant temperature reaction for 2h;
[0047] S4: Cool the mixture obtained in step S3 to 23°C, add ammonia water, adjust...
preparation example 2
[0049] The rest are the same as in Preparation Example 1, except that the amount of epoxy monomer E-44 is 15 parts.
preparation example 3
[0051] The rest are the same as in Preparation Example 1, except that the amount of butyl methacrylate is 30 parts.
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Abstract
A two-component waterproof coating resistant to heat and humidity and a preparation method thereof. The waterproof coating includes two components, A and B. The A component includes a modified acrylic resin emulsion; the B component includes a curing agent; the raw material of the modified acrylic resin includes a ring Oxygen resin monomer, fluorine-containing vinyl silane monomer, acrylic acid derivative monomer. The present invention uses epoxy monomers, fluorine-containing vinyl silane monomers and acrylic acid derivatives to react to obtain a modified acrylic resin, and the waterproof coating containing the film-forming substance not only combines the good properties of epoxy resin and acrylic resin Adhesive, chemical resistance, also has good moisture and heat stability. In addition, the modified acrylic resin has a synergistic effect with fluorine-containing vinyl silane and silicone leveling agent. Adjusting the amount of fluorine-containing vinyl silane monomer and leveling agent can improve the water resistance of waterproof coatings, which is suitable for cement The base wall, especially painted on the cement base wall, forms a three-wall system together with the self-built polyurethane wall.
Description
technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a heat-and-humidity resistant two-component waterproof coating and a preparation method thereof. Background technique [0002] In hot and humid southern regions, or in hot and humid underground projects (such as substation rooms), cement concrete or mortar is sometimes subjected to the physical and chemical effects of environmental water, which gradually destroys the hardened cement stone structure and loses its protection. Function, architectural waterproof coating is a viscous, homogeneous liquid, which is evenly painted on the building surface, and after the volatilization of solvent or water, or the chemical reaction between the two components, a dense layer is formed. The polymer film is used to isolate the surface of the building from water, so that the building is waterproof and has a long service life. [0003] There are many types of waterproof coatings for...
Claims
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IPC IPC(8): C09D151/08C09D7/47C09D7/61C09D7/63C08F283/10C08F220/18C08F230/08E04F13/02
CPCC09D151/08C09D7/47C09D7/61C09D7/63C08F283/10E04F13/02C08L2201/08C08L2312/00C08K2201/014C08K2003/265C08F230/08C08L1/284C08K13/02C08K3/26C08K5/098C08K5/47C08K5/5419
Inventor 姬振行王少华王宇川
Owner 中电保力(北京)科技有限公司