阅读说明：本技术 防水渗透涂料、含有该涂料的硅酸钙板及其制备方法 (Waterproof penetrating paint, calcium silicate board containing same and preparation method thereof ) 是由 单伟红 孙伟 于 2020-04-10 设计创作，主要内容包括：本发明涉及建筑材料领域,具体涉及防水渗透涂料、含有该涂料的硅酸钙板及其制备方法。包括以质量百分比计的以下成分：甲基硅酸钾35-43％,余量为纯净水,将所述甲基硅酸钾和纯净水加热搅拌,溶解完全即得所述防水渗透涂料。本发明具有如下有益效果：无毒无味,对环境和人体无伤害；工艺施工简单效果持久,耐刷洗,耐高低温度；防水性好、吸水率减少。(The invention relates to the field of building materials, in particular to a waterproof permeable coating, a calcium silicate board containing the waterproof permeable coating and a preparation method of the calcium silicate board. The composite material comprises the following components in percentage by mass: 35-43% of methyl potassium silicate and the balance of purified water, and heating and stirring the methyl potassium silicate and the purified water, and completely dissolving to obtain the waterproof permeable coating. The invention has the following beneficial effects: no toxicity and odor, and no harm to environment and human body; the process construction is simple, the effect is durable, and the scrubbing resistance and the high and low temperature resistance are realized; good waterproof performance and reduced water absorption.)

1. The waterproof permeable coating is characterized by comprising the following components in percentage by mass: 35-43% of methyl potassium silicate and the balance of purified water, and heating and stirring the methyl potassium silicate and the purified water, and completely dissolving to obtain the waterproof permeable coating.

2. The waterproof paint according to claim 2, characterized by comprising the following components in percentage by mass: 40% of methyl potassium silicate and the balance of purified water, heating and stirring the methyl potassium silicate and the purified water, and completely dissolving to obtain the waterproof permeable coating.

3. A method for preparing a calcium silicate board containing the coating material for preventing water penetration according to claim 1, comprising the steps of:

(1) mixing the potassium methyl silicate and the purified water according to the mass percentage, heating and stirring the mixture until the potassium methyl silicate and the purified water are completely dissolved to obtain the waterproof permeable coating;

(2) and (3) flattening the calcium silicate board by using sand paper, removing floating dust, rolling the waterproof penetrating coating on the surface layer of the calcium silicate board until saturated penetration is achieved, and drying to obtain the calcium silicate board containing the waterproof penetrating coating.

4. The method for preparing a calcium silicate board containing a water penetration-resistant coating according to claim 3, wherein the heating temperature in the step (1) is 55 to 65 ℃.

5. The method for preparing a calcium silicate board having a water penetration preventing coating according to claim 3, wherein the calcium silicate board is sanded with flat 120-mesh sandpaper in the step (2).

6. The method for preparing a calcium silicate board containing a water penetration-resistant coating according to claim 3, wherein the calcium silicate board containing a water penetration-resistant coating is obtained after drying for 12 hours in the step (2).

7. A calcium silicate board containing a water penetration resistant coating prepared by the method as claimed in any one of claims 3 to 6.

Technical Field

The invention belongs to the field of building materials, and particularly relates to a waterproof permeable coating, a calcium silicate board containing the waterproof permeable coating and a preparation method of the calcium silicate board.

Background

The calcium silicate board is made up by using loose short fibre of inorganic mineral fibre or cellulose fibre as reinforcing material and using siliceous-calcareous material as main body cementing material through the processes of pulping, forming and curing reaction in high-temp. high-pressure saturated steam to form calcium silicate gel body. The product is fireproof, moistureproof, soundproof, mothproof and durable, and is an ideal decorative plate for suspended ceilings and partitions.

The calcium silicate board is easy to absorb water and bubble and delaminate when applied to an outer wall, so that a base layer is required to be subjected to waterproof sealing treatment before coating. The existing methods have two kinds: using a solvent type UV coating to roll coat; diluting with epoxy resin and organic solvent such as toluene and butyl acetate, adding phenolic aldehyde amine curing agent, stirring, and roller coating. The two methods both use oil-based solvent type coating, the use amount of organic solvents such as toluene and butyl acetate is large, the smell of a production workshop is strong, danger is caused, the environment is not protected, the penetration force of the UV coating is limited, the UV coating cannot be cured due to insufficient illumination even penetrating into a plate, and the waterproof sealing effect cannot be ensured. The epoxy resin is inconvenient to operate, the thickness of the coating is different, the coating is too thin, the waterproof sealing effect is poor, the roller coating is thick, and the interlayer adhesion is influenced. The thickness is difficult to master on a roller coating production line, and new products and process methods are urgently needed to improve.

Disclosure of Invention

In view of the above technical problems, an object of the present invention is to provide a waterproof coating material, a calcium silicate board containing the same, and a method for preparing the same, wherein the prepared coating material is non-toxic and odorless, harmless to the environment and human body, and after being applied, the calcium carbonate board is more resistant to brushing, high and low temperatures, and has stronger water resistance.

In order to achieve the purpose, the invention adopts the following technical scheme:

firstly, the invention provides a waterproof permeable coating, which comprises the following components in percentage by mass: 35-43% of methyl potassium silicate and the balance of purified water, and heating and stirring the methyl potassium silicate and the purified water, and completely dissolving to obtain the waterproof permeable coating.

Further, 40% of methyl potassium silicate and the balance of purified water are heated and stirred, and the waterproof penetrating paint is obtained after the methyl potassium silicate and the purified water are completely dissolved.

Secondly, the invention provides a preparation method of the calcium silicate board containing the waterproof penetrating paint, which comprises the following steps:

(1) mixing the potassium methyl silicate and the purified water according to the mass percentage, heating and stirring the mixture until the potassium methyl silicate and the purified water are completely dissolved to obtain the waterproof permeable coating;

(2) and (3) flattening the calcium silicate board by using sand paper, removing floating dust, rolling the waterproof penetrating coating on the surface layer of the calcium silicate board until saturated penetration is achieved, and drying to obtain the calcium silicate board containing the waterproof penetrating coating.

Further, the heating temperature in the step (1) is 55-65 ℃.

Further, in the step (2), the calcium silicate board is sanded with flat 120-mesh sand paper.

Further, the calcium silicate board containing the waterproof penetrating coating is obtained after the calcium silicate board is dried for 12 hours in the step (2).

The invention also protects a calcium silicate board containing the waterproof penetrating coating.

Compared with the prior art, the invention has the following beneficial effects: no toxicity and odor, and no harm to environment and human body; the process construction is simple, the effect is durable, and the scrubbing resistance and the high and low temperature resistance are realized; good waterproof performance and water absorption reduced to 8%.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The raw materials involved in the invention are all commercially available.