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Mildewproof dew resisting coating and preparation thereof

An anti-condensation and anti-mildew technology, applied in anti-fouling/underwater coatings, epoxy resin coatings, coatings, etc., can solve the problems of not being effective for a long time, coating water absorption swelling, and high price

Active Publication Date: 2009-01-21
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are a lot of hidden dangers in this method, such as water absorption saturation, water absorption swelling of the coating, ineffectiveness for a long time, high price, etc., so that the anti-condensation coating does not get the due market
At present, there is no report of functional coatings that integrate anti-mildew and anti-condensation performance

Method used

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  • Mildewproof dew resisting coating and preparation thereof
  • Mildewproof dew resisting coating and preparation thereof
  • Mildewproof dew resisting coating and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: The coating is prepared according to the following proportions.

[0039]

[0040] Use this paint to make a coating, and perform functional testing respectively:

[0041] 1. Hygroscopicity: Make a coating sample with a thickness of 2mm-3mm. After the prepared sample was dried naturally for 24 hours, it was dried in a drying oven at 80°C for 5 hours. Then place it in a humidity-conditioning box to carry out a moisture absorption test, and the test conditions are a temperature of 25° C. and a relative humidity of 85%. After 48 hours, take it out and weigh it. Through the mass calculation before and after the test, it is concluded that the moisture absorption of the sample reaches 280g / m 2 , indicating that the test coating has moisture absorption function; put the moisture-absorbing sample into a humidity-conditioning box with a temperature of 25°C and a relative humidity of 35%, take it out and weigh it after 48 hours, and obtain that the moisture relea...

Embodiment 2

[0044] Embodiment 2: Prepare the coating according to the following proportions.

[0045]

[0046] Carry out functional test with the same method as Example 1, the result: Utilize the coating that this coating is made to test in humidity-conditioning box, under the condition of temperature 25 ℃, relative humidity 85%, moisture absorption reaches 320g / m 2 ;Under the conditions of temperature 25℃ and relative humidity 35%, the moisture release can reach 260g / m 2 , has good moisture absorption and desorption functions; the coating’s killing rate against six comprehensive molds of Candida albicans and Aspergillus niger has reached level 0; the killing rate against Staphylococcus aureus and Escherichia coli are respectively: 99.9% and 99.9%; the thermal conductivity of the coating measured by the coating thermal conductivity tester is 0.040W / m·K.

Embodiment 3

[0047] Embodiment 3: Prepare coating according to the following proportions.

[0048]

[0049] Carry out functional testing with the same method as in Example 1, the result: the coating made of this coating is tested in a humidity-conditioning box, and the moisture absorption reaches 330g / m at a temperature of 25°C and a relative humidity of 85%. 2 ;Under the conditions of temperature 25℃ and relative humidity 35%, the moisture release can reach 259g / m 2 . The coating's killing rate against Candida albicans and Aspergillus niger reached grade 0, and its antibacterial performance against Staphylococcus aureus and Escherichia coli was 98.9% and 99.9% respectively. The coating thermal conductivity tester measured the thermal conductivity of the coating to be 0.039W / m·K.

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Abstract

The invention provides internal wall paint with functions of mould proofing, moisture prevention and heat-insulating performance, and a preparation method thereof, belonging to the building material field. The paint in every 100 weight portion comprises 1 to 40 weight portions of a moisture absorbing material, 2 to 20 weight portions of a heat insulating material and 0.1 to 5 weight portions of a mould proofing material. The internal wall paint takes porous materials such as portiforium expanded perlite, attapulgite, sepiolite, diatomite, zeolite, etc. as a material with the humidity adjusting function, takes materials with low heat conductivity coefficient such as hollow glass bead, hollow ceramic bead, closed pore expanded perlite and silicon dioxide aerocolloid as a heat insulating material, and takes metal oxide, a nanometer material and zinc pyrithione as organic and inorganic composite mildew proofing materials. The paint has the moisture absorbing quantity more than 180g / m<2>, the moisture releasing quantity more than 140g / m<2>, the mould proofing capability in zero grade, the mold resistance more than 98 percent, and the coefficient of heat conductivity not more than 0.040W / m.K, can be applied to the building surface, and has the functions of mould proofing , moisture prevention and insulating heat besides the function of the internal wall decorative material.

Description

technical field [0001] The invention belongs to the field of building materials and relates to a novel coating material for interior wall decoration. In addition to the basic functions of interior wall paint decoration, the paint also has the functions of effectively preventing and inhibiting mold growth and condensation, and has the function of heat insulation at the same time. Background technique [0002] With its excellent film-forming properties and environmental friendliness, architectural latex coatings have developed rapidly and have a broad market. Now they have developed into the most widely used building materials in architectural decoration materials. Because the coating film of architectural latex coatings is not as dense as solvent-based architectural coatings, it is easily corroded by bacteria and microorganisms and mildew spots appear, which not only affects the appearance of buildings, but also brings harm to human health. In particular, nosocomial infectio...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D5/14C09D133/04C09D131/04C09D125/14C09D163/00
Inventor 王静王继梅冀志江侯国艳丁楠王晓燕李海建
Owner CHINA BUILDING MATERIALS ACAD
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