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Ageing-resistant high-evenness exterior wall coating

An exterior wall coating and anti-aging technology, which is applied in the field of building materials, can solve the problems of exterior wall coating uniformity, poor aging resistance and abrasion resistance, etc., achieve aging resistance and function protection, avoid development of cracks, and improve antibacterial performance Effect

Inactive Publication Date: 2019-08-30
陈玲玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an aging-resistant high-uniformity exterior wall coating for the problems of poor uniformity, aging resistance, and abrasion resistance of the commonly used exterior wall coatings at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of composite base material, comprises the steps:

[0033] (1) At 28~37°C, take bentonite and 10% hydrochloric acid solution in a mass ratio of 1:8~15 and mix them in a reaction kettle, stir magnetically at 400~700r / min for 1~3h, filter, and take the filter residue with water After washing 2-4 times, move to 90-100°C for 3-5 hours to dry in an oven to obtain acid-treated bentonite. At 40-60°C, mix acid-treated bentonite, reagent A, and silver nitrate solution with a mass fraction of 8% to obtain 400~700r / min magnetic stirring for 40~60min, standing at room temperature for 1~3h, rotating evaporation at 90~110°C, and concentrating under reduced pressure to 30~45% of the original volume to obtain pretreated bentonite material;

[0034] (2) In parts by weight, take 40~50 parts of water, 12~20 parts of pretreated bentonite material, 10~20 parts of filler, 1~4 parts of defoamer, 2~5 parts of dispersant, 2~5 parts Thickener, 10~15 parts of silicone acryl...

Embodiment 1

[0041] Reagent A: Mix hexadecyltrimethylammonium bromide, ammonium chloride, and water at a mass ratio of 5:1:20 to obtain reagent A.

[0042] Reagent B: Mix carboxymethyl chitosan, gelatin, and 5% acetic acid solution at a mass ratio of 3:0.1:30 to obtain Reagent B.

[0043] Defoamer: Mix polydimethylsiloxane and polyoxyethylene polyoxypropylene pentaerythritol ether in a mass ratio of 7:1 to obtain a defoamer.

[0044] Dispersant: Mix polyacrylamide, methyl amyl alcohol and stearic acid in a mass ratio of 1:3:1 to obtain a dispersant.

[0045] Thickener: Mix hydroxyethyl cellulose, sodium alginate, and guar gum at a mass ratio of 6:1:1 to obtain a thickener.

[0046] Auxiliary materials: Mix microcrystalline paraffin, zinc chloride, and carboxymethyl cellulose in a mass ratio of 3:1:1 to obtain auxiliary materials.

[0047] Filler: Mix calcium carbonate, sodium silicate and talcum powder according to the mass ratio of 1:0.1:3 to obtain the filler.

[0048] The preparation...

Embodiment 2

[0057] Reagent A: Mix hexadecyltrimethylammonium bromide, ammonium chloride, and water at a mass ratio of 5:1:35 to obtain reagent A.

[0058] Reagent B: Mix carboxymethyl chitosan, gelatin, and 5% acetic acid solution at a mass ratio of 3:0.3:50 to obtain Reagent B.

[0059] Defoamer: Mix polydimethylsiloxane and polyoxyethylene polyoxypropylene pentaerythritol ether in a mass ratio of 7:3 to obtain a defoamer.

[0060] Dispersant: Mix polyacrylamide, methyl amyl alcohol and stearic acid at a mass ratio of 1:6:1 to obtain a dispersant.

[0061] Thickener: Mix hydroxyethyl cellulose, sodium alginate, and guar gum at a mass ratio of 6:2:1 to obtain a thickener.

[0062] Auxiliary materials: Mix microcrystalline paraffin, zinc chloride, and carboxymethyl cellulose at a mass ratio of 6:1:1 to obtain auxiliary materials.

[0063] Filler: Mix calcium carbonate, sodium silicate and talcum powder according to the mass ratio of 1:0.2:5 to obtain the filler.

[0064] The preparation...

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Abstract

The invention relates to an ageing-resistant high-evenness exterior wall coating, and belongs to the field of building materials. According to the method, acid soluble impurities and a part of organicimpurities distributed in bentonite channels are removed by using a hydrochloric acid solution, and then modification is carried out by using a silver nitrate solution, so that antibacterial performance of the system can be effectively improved, and uniformity and durability are effectively kept. The swelling degree of an inner coating film layer is reduced under rain, so that porosity is reduced, water vapor which passes through a coating layer to contact a wall body is reduced, and the protection effect is improved. Linseed oil, lecithin and the like are used for preparing composite microcapsules, and after an outer wall is coated, the composite microcapsules can be cured at cracks, so that self-repairing of the cracks is realized, further cracking are avoided, and then ageing resistance and effects of the external wall coating are guaranteed. A silicon-acrylic emulsion, a silicate and a dispersing agent are added, so that scratch resistance is effectively improved while strength iseffectively improved. According to the invention, the problems that an existing common outer wall coating is poor in uniformity, aging resistance and scratch resistance are solved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an aging-resistant high-uniformity exterior wall paint. Background technique [0002] Paint is coated on the surface of the object to be protected or decorated, and can form a continuous film firmly attached to the object to be coated, usually based on resin, or oil, or emulsion, with or without adding pigments, fillers, adding The corresponding additives are viscous liquids prepared with organic solvents or water. Exterior wall paint is used to paint the exterior walls of buildings, so the most important indicator is anti-ultraviolet radiation, which requires long-term exposure without discoloration. [0003] After the construction of conventional buildings is completed, it is usually necessary to paint the building surface. Paint stucco can make the building more beautiful, and it also has the functions of waterproofing and drying. In the exterior wall coating of the low-le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D191/00C09D105/08C09D189/00C09D7/61C09D7/62C09D7/63C09D7/65C09D5/14
CPCC08L2205/02C08L2205/035C09D5/14C09D7/61C09D7/62C09D7/63C09D7/65C09D7/70C09D143/04C08L91/005C08L5/08C08L89/00C08K13/06C08K9/02C08K9/04C08K3/346C08K3/34C08K5/521
Inventor 陈玲玲
Owner 陈玲玲
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