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Aqueous interior wall coating taking inorganic material as film forming substance and preparation method thereof

A technology of interior wall coatings and coatings, applied in the field of coatings, can solve problems such as drumming, environmental impact, and shedding

Inactive Publication Date: 2019-05-21
赵曦轮 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although the existing water-based paints have avoided the shortcoming of releasing organic solvents into the air, the existing water-based paints use synthetic resin emulsions as film-formers, and some acrylic monomers, emulsifiers, etc. are used to produce these resin emulsions. , initiators and other chemical raw materials will have a certain impact on the environment; at the same time, the existing water-based coatings are prone to more disadvantages, such as mildew, swelling, falling off, and a short service life, which brings a lot of inconvenience to users

Method used

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  • Aqueous interior wall coating taking inorganic material as film forming substance and preparation method thereof
  • Aqueous interior wall coating taking inorganic material as film forming substance and preparation method thereof
  • Aqueous interior wall coating taking inorganic material as film forming substance and preparation method thereof

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Embodiment approach

[0067] According to a preferred embodiment of the present invention, the coating comprises the following raw material components in weight ratio:

[0068]

[0069] In a further preferred embodiment, the coating comprises the following raw material components in a weight ratio:

[0070]

[0071] In a further preferred embodiment, the weight ratio of silica sol to potassium silicate is (4-6):1, such as 5:1.

[0072] Among them, in the present invention, the inventor found after a large number of experimental studies that it is necessary to reasonably control the dosage ratio of silica sol and potassium silicate. Specifically, if the dosage of potassium silicate in the system is too much, the stability will be poor, and the coating The longer it is placed, the more viscous it will be. It is speculated that the reason may be cross-linking with the powder in the system. However, if the amount of potassium silicate in the system is too small, the film-forming property of the c...

Embodiment 1

[0197] The preparation of embodiment 1 modified nano-titanium dioxide / diatomite composite

[0198] Take 15mL of tetrabutyl titanate, 75mL of absolute ethanol, 7.5mL of distilled water and 1.5mL of acetic acid, stir and mix tetrabutyl titanate and absolute ethanol, then add acetic acid dropwise, and then slowly add distilled water dropwise to form TiO 2 Precursor gel, prepare multiple copies and store them for later use;

[0199] Weigh 30 g of diatomite powder, 0.67 g of polyvinyl alcohol, and the TiO prepared above 2 Precursor gel 5g, add an appropriate amount of water to the three, stir and mix well, put it in a high-pressure reactor, and react at 150°C for 12 hours under magnetic stirring to obtain a mixed solution;

[0200] The mixed solution was dried at 60°C and placed in a nitrogen atmosphere furnace, and kept at 650°C for 2 hours to obtain a modified nano-titanium dioxide / diatomite composite.

Embodiment 2

[0201] Embodiment 2 Preparation of modified nano-titanium dioxide / diatomite composite

[0202] Take 6 mL of tetrabutyl titanate, 75 mL of absolute ethanol, 10 mL of distilled water and 5 mL of acetic acid, stir and mix tetrabutyl titanate and absolute ethanol, then add acetic acid dropwise, and then slowly add distilled water dropwise to form TiO 2 Precursor gel, preparation of multiple TiO 2 The precursor gel is placed for use;

[0203] Weigh 30 g of diatomite powder, 0.88 g of polyvinyl alcohol, and the TiO prepared above 2 3.5 parts of precursor gel, add appropriate amount of water to the three, stir and mix them evenly, put them in a high-pressure reactor, and react at 150°C for 12 hours under magnetic stirring to obtain a mixed solution;

[0204] The mixed solution was dried at 60°C and placed in a nitrogen atmosphere furnace, and kept at 650°C for 2 hours to obtain a modified nano-titanium dioxide / diatomite composite.

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Abstract

The invention discloses an aqueous interior wall coating taking an inorganic material as a film forming substance and a preparation method thereof. The coating is prepared from the following raw materials: water, a silica sol and potassium silicate, wherein the content of silicon dioxide in the silica gel is 25-30%. The particle sizes of the silicon dioxide particles are 8-10 nm, and the pH valueof the silica sol is 8-11; the content of silicon dioxide (SiO2%) in potassium silicate is greater than or equal to 18.0, and the modulus is between 3.75 and 4.15; the coating also comprises a stabilizer and a silane coupling agent and also comprises pigments and filler, a thickener, aqueous bentonite, a pH regulator and a functional auxiliary agent. According to the aqueous interior wall coating,an organic emulsion is replaced by inorganic potassium silicate and the silica sol as the film forming substance, and the raw materials are directly drawn from the nature and are rich in source, non-toxic, peculiar smell-free and non-irritant. Meanwhile, the inorganic interior wall coating which is alkaline can inhibit growth of bacteria and algae, so that the wall space is kept clean and has a good ventilating property. The wall body is kept dry, and the condition that the coating of the wall space is mildewy, is bulged and falls off as a result of dampness is prevented.

Description

technical field [0001] The invention relates to the field of coatings, in particular to water-based coatings, in particular to a water-based interior wall coating using inorganic materials as film-formers and a preparation method thereof. Background technique [0002] Traditional oil-based paints use organic solvents as solvents. In this way, volatile organic compounds (VOC) will be released, which will easily pollute the atmosphere and cause fire hazards during construction. Moreover, when used in interior wall coatings, organic solvents will be released indoors, directly endangering people's health. [0003] With the improvement of people's living standards, consumers' requirements for quality of life have also been greatly improved, and more and more attention has been paid to the problem of decoration pollution. Not only pay attention to the general performance of coatings, but also pay more attention to the non-toxic and harmless properties of coatings to human body an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D1/04C09D7/61C09D7/62C09D5/18C09D5/16
Inventor 赵曦轮赵普平赵越超杨智
Owner 赵曦轮
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