Moisture-curing polyurethane permeable paint for calcium silicate board and application of permeable paint
A technology of calcium silicate board and polyurethane, which is applied in the field of coatings, can solve the problems of not improving the waterproof performance of the board, being easy to absorb water and deform, and not using construction, etc., achieving excellent water and moisture resistance, improving mechanical properties, and simple construction convenient effect
Inactive Publication Date: 2021-06-25
天津中晶建筑材料有限公司
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- Description
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Problems solved by technology
[0004] There are several problems in the application process of lightweight calcium silicate board. One is that it is easy to absorb water and deform in a humid environment because of its low density; The use of construction does not meet the application requirements of lightweight calcium silicate boards very well
Ordinary primer can only form a layer of paint film on the surface of the board, and cannot penetrate into the board, so it cannot improve the waterproof performance of the board
Method used
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Embodiment 1
[0026] This embodiment provides a wet curing polyurethane peptiding paint with a calcium silicate plate, and the raw material component is subjected to a weight, including: 99 parts of polyurethane E21 (Cischuch Polymer (China) Co., Ltd. Desmodur E 21), 0.4 Dibutyltin, 0.4 parts of catalyst DABCO NE1070, 0.2 parts of defoamer byk 054.
[0027] The preparation method includes the step of mixing the raw material component, stirred with a stirrer and then static and except for a certain viscosity.
Embodiment 2
[0029] This example provides a wet curing polyurethane osmotic paint in the preparation of silicate plates, including steps: uniformly coating the wet curing polyurethane penetration paint prepared in Example 1 as a roller coating method to dissipate the calcium silicate plate. , Coating is 26 g / m 2 , Put the plate into a 60 ° C oven for 3 minutes, take it out, roll it again, and the coating is 16 g / m. 2 After the oven is completely dried.
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Abstract
The invention relates to moisture-curing polyurethane permeable paint for a calcium silicate board and application of the permeable paint. The moisture-curing polyurethane permeable paint for the calcium silicate board, provided by the invention, comprises the following raw material components in percentage by weight: 98%-99% of a polyisocyanate prepolymer of diisocyanate, 0.2%-0.8% of an initiator, 0.2%-0.8% of a catalyst and 0.2%-0.8% of a defoaming agent. The moisture-curable polyurethane permeable paint provided by the invention has a good sealing effect on a light calcium silicate board, can permeate into the board as a sealing primer, and forms a film at a certain depth under the board surface through moisture curing, so that the sealed calcium silicate board has very excellent water-resistant and moisture-proof capabilities, meanwhile, the mechanical property of the board can be improved to a certain extent, and the drawing strength of the board is improved; and the construction is simple and convenient, and cost is saved.
Description
Technical field [0001] The invention belongs to the technical field of coating, and more particularly to a wet curing polyurethane osmotic paint and its application thereof for calcium silicate plate. Background technique [0002] With the modernization process and scientific progress, a large number of new materials, new technologies, new processes have emerged, and are widely used in building decorative materials. Modern decorative sheets have pushed the beautiful surface decoration from the past, and gradually developed into a complex of a set of art, materials, and sound and light. Among them, as a decorative lacquer in the decorative material, it is also more diverse and functionalized. Various lacquer provides various performance, so finding different sheets of paint to meet their respective application scenarios. [0003] The calcium silicate plate is a plate material such as a silicate, a calcium material as a main ceramid material, an inorganic mineral fiber or a cellulo...
Claims
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IPC IPC(8): C09D175/04C04B41/63
CPCC04B41/4884C04B41/63C09D5/002C09D175/04C04B41/4535C04B41/52
Inventor 张景明于海伦王翱李景民
Owner 天津中晶建筑材料有限公司
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