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A kind of preparation method containing methyl silicate graft polymer waterproofing agent

A technology of grafting polymer and methyl silicic acid, applied in the direction of coating, etc., to avoid particle agglomeration, low price and easy operation.

Active Publication Date: 2016-01-13
JIANGXI ZHONGKEXIN NEW BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is, aiming at the problems existing in the existing building waterproofing agent, the present invention provides a kind of preparation method that contains methyl silicate graft polymer waterproofing agent

Method used

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  • A kind of preparation method containing methyl silicate graft polymer waterproofing agent
  • A kind of preparation method containing methyl silicate graft polymer waterproofing agent
  • A kind of preparation method containing methyl silicate graft polymer waterproofing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of methyl silicate graft polymer:

[0026] First add 64g of methyl silicic acid, 72g of methacrylic acid, 150g of toluene, 1.5g of stannous octoate, and 0.34g of hydroquinone into a three-necked flask with a thermometer, a condenser and a stirring device, and slowly heat the above mixture to 90 ℃, react for 8 hours; after cooling, wash off unreacted monomers and polymerization inhibitors with sodium carbonate solution, add 106g styrene and 2.12g benzoyl peroxide after drying, heat up and slowly add 1.01g benzene peroxide dropwise Formyl solution, after dropwise addition, was reacted at a temperature of 60° C. for 4 hours, and the solvent was removed under reduced pressure to obtain a polymer.

[0027] Preparation of waterproofing agent:

[0028] The waterproofing agent raw material formula is as follows by weight percentage:

[0029]

[0030] Waterproofing agent preparation process: Use KH550 to modify the surface of nano calcium stearate particles, the...

Embodiment 2

[0032] Preparation of methyl silicate graft polymer:

[0033] First add 64g of methyl silicic acid, 86.4g of methacrylic acid, 240g of toluene, 1.25g of stannous chloride, and 0.34g of hydroquinone into a three-necked flask with a thermometer, a condenser and a stirring device, and slowly heat the above mixture React at 120°C for 6 hours, wash with sodium carbonate solution to remove unreacted monomers and polymerization inhibitors after cooling, add 120g styrene and 2.62g tert-butyl peroxybenzoate after drying, heat up and slowly add 2.01g After the dropwise addition of the tert-butyl peroxybenzoate solution, react at a temperature of 60° C. for 4 hours, and remove the solvent under reduced pressure to obtain a polymer.

[0034] Preparation of waterproofing agent:

[0035] Waterproofing agent raw material formula by weight percentage:

[0036]

[0037]

[0038] Waterproofing agent preparation process: use KH570 to modify the surface of nano-zinc stearate particles, th...

example 3

[0040] Preparation of methyl silicate graft polymer:

[0041] First add 64g of methyl silicic acid, 108g of methacrylic acid, 320g of toluene, 2.6g of dibutyltin dilaurate, and 0.54g of hydroquinone into a three-necked flask with a thermometer, a condenser and a stirring device, and the above mixture Slowly heat to 110°C and react for 7 hours. After cooling, wash with sodium carbonate solution to remove unreacted monomers and polymerization inhibitors. After drying, add 106g of styrene and 312g of tert-butylcumyl peroxide, heat up and slowly add 2.15 g of tert-butylcumyl peroxide solution, after the dropwise addition, react at a temperature of 60° C. for 4 h, and remove the solvent under reduced pressure to obtain a polymer.

[0042] Preparation of waterproofing agent:

[0043] Waterproofing agent raw material formula by weight percentage:

[0044]

[0045] Waterproofing agent preparation process: use KH560 to modify the surface of nano-magnesium stearate particles, then ...

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Abstract

A preparation method containing a methyl silicic acid graft polymer and a waterproofing agent, the method grafts methyl silicic acid and an acrylic monomer in the presence of a catalyst to obtain a methyl silicic acid graft polymer, Then use the grafted polymer as base material, nano stearate, deionized water and emulsifier to prepare a penetrating silicone waterproofing agent. The present invention adopts methyl silicic acid to modify acrylic acid polymer, forms a kind of material with network cross-linked structure through cross-linking technology and alkali reaction inside cement mortar, and adopts nano-stearate as additive at the same time, after modification Afterwards, it changes from hydrophilic to hydrophobic, avoiding particle agglomeration, and the additive can effectively block the capillary channels inside the cement mortar. Through this method, the effective chemical bonding between the waterproofing agent and the cement matrix is ​​realized, and a waterproof layer is formed inside. , can prevent water from penetrating into the cement mortar and improve the water-repellent effect. The invention is suitable for building waterproof materials.

Description

technical field [0001] The invention relates to a preparation method of a waterproofing agent containing methyl silicate graft polymer, which belongs to the technical field of building waterproofing materials. Background technique [0002] At present, the waterproofing of construction projects mainly uses cement-based rigid waterproof materials. The waterproof effect of this type of waterproof material only acts on the surface, and cannot automatically penetrate into the interior of the project structure. The waterproof effect cannot last, especially for buildings constructed of concrete. After that, there are tiny pores inside, which will cause water seepage, and will also cause carbonation and chloride salts to have a destructive effect on reinforced concrete, which will damage the building and increase the maintenance cost of the building. Therefore, the development and application of waterproof materials have an important impact on construction projects. [0003] After ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F285/00C08F220/06C08F212/08C09D151/00C09D7/12C08G77/06C04B41/49C04B24/42C04B103/65
Inventor 游胜勇陈衍华谌开红程斌
Owner JIANGXI ZHONGKEXIN NEW BUILDING MATERIALS
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