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Organosilicon waterproofing agent and preparation method thereof

A technology of silicone and water repellent, applied in the direction of coating, etc., can solve the problems of coating swelling, coating life reduction, cracking, etc., and achieve the effect of low production cost, convenient operation and low pollution

Active Publication Date: 2013-04-10
陈国坚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if moisture expands between the building and the coating due to temperature, it will cause swelling and cracking of the coating, reducing the life of the coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A kind of preparation method of organosilicon waterproofing agent, it is characterized in that: it comprises the following steps:

[0018] The first step is to add a strong base into the hydrogen-containing silicone oil and stir to obtain a silicone resin; wherein the mass ratio of the hydrogen-containing silicone oil to the strong base is 100:1-10.

[0019] The second step is to dissolve the above-mentioned silicone resin with an organic solvent, then add a small amount of tetramethylammonium hydroxide as a catalyst, stir and heat up to the boiling point to make it crack; wherein the silicone resin and organic solvent and tetramethylammonium The mass ratio of ammonium hydroxide is: 1:10-20:0.01.

[0020] In the third step, the above product is cooled to room temperature, diluted with water, and the product is separated.

Embodiment 1

[0022] Prepare the silicone waterproofing agent according to the above steps, wherein the hydrogen-containing silicone oil is 100 g, the strong base is 1 g, the organic solvent is 1000 g, and the tetramethylammonium hydroxide is 1 g.

Embodiment 2

[0024] Prepare the silicone waterproofing agent according to the above steps, wherein the hydrogen-containing silicone oil is 100g, the strong base is 5g, the organic solvent is 1000g, and tetramethylammonium hydroxide is 1g.

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PUM

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Abstract

The invention relates to a building material waterproofing agent, in particular to an organosilicon waterproofing agent and a preparation method thereof. The organosilicon waterproofing agent is a composition obtained by cracking organosilicon resin in an organic solvent and then carrying out separation, wherein the organosilicon resin is prepared from hydrogen-containing silicone oil under the action of strong base, the mass ratio of hydrogen-containing silicone oil to strong base is 100: (1-10), and the mass ratio of organosilicon resin to organic solvent is 1: (10-20). When applied to waterproofing paint and waterproofing mortar, the organosilicon waterproofing agent not only can achieves waterproofing effect, but also can maintain the air-permeable effect of a building base material.

Description

technical field [0001] The invention relates to a waterproofing agent for building materials, in particular to a silicone waterproofing agent and a preparation method thereof. Background technique [0002] Concrete and masonry structures often fail to reach the designed life due to insufficient durability. These building materials will suffer physical damage and chemical erosion due to the influence of many factors during use. Water plays a very important role in the damage and erosion of concrete structures. If the building substrate is exposed to water, a series of corrosion reactions will occur, resulting in a reduction in its service life. Therefore, the research on the waterproof performance of building materials has become an important task in the industry. At present, the domestic waterproof materials for buildings mostly use two-component waterproof coatings with emulsion and powder, and the waterproof effect is achieved by sealing the surface of the building. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12C04B24/40C04B103/65
Inventor 陈国坚
Owner 陈国坚
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