Biomass internal wall paint and preparation method thereof

A technology for interior wall coatings and biomass, applied in starch coatings, coatings, etc., can solve the problems of high content of harmful substances and high formaldehyde content, and achieve the effects of low VOC content, good air permeability, and good expansion resistance.

Active Publication Date: 2014-10-22
GANSU GLDARK NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a kind of biomass interior wall paint, to solve the problem that existing interior wall paint has high content of harmful substances in the paint, especially the high content of formaldehyde

Method used

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  • Biomass internal wall paint and preparation method thereof
  • Biomass internal wall paint and preparation method thereof
  • Biomass internal wall paint and preparation method thereof

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preparation example Construction

[0039] 3. The preparation process of acid hydrolyzed hydroxypropyl starch is as follows: in deionized water, add a swelling inhibitor relative to the starch mass ratio of 13%, add sodium hydroxide accounting for 1.0% of the starch mass, mix and stir until dissolved, and add the step (1) Adjust the prepared acid-thinned starch into 35% starch milk, stir and alkalinize for 40 minutes, heat up to 42°C, add propylene oxide accounting for 5% of the starch mass, etherify for 14 hours, add 10% hydrochloric acid to adjust the pH to 7.0, after centrifugal dehydration, drying and sieving, the acid hydrolyzed hydroxypropyl starch can be obtained;

[0040] 4. The preparation process of acid-thinned starch used in the preparation process of acid-thinned carboxymethyl starch and acid-thinned hydroxypropyl starch is as follows: add HCl solution with a mass percentage concentration of 0.6% to the starch, and prepare starch with a concentration of 38%. Milk, heated to 50°C, acidolysis for 2 ho...

Embodiment 1

[0047] Biomass interior wall paint is composed of the following materials: 20kg of compound modified starch emulsion, 2kg of aluminum starch dodecenyl succinate, 0.3kg of dispersant OROTAN731A polycarboxylate sodium salt, 15kg of titanium dioxide, and wetting agent fatty acid polyoxyethylene ether AEO -9 is 0.4kg, highly cross-linked porous starch 5kg, calcined kaolin 6kg, heavy calcium carbonate 20kg, propylene glycol 2kg, defoamer metal soap 0.2kg, demineralized water 30.0kg.

[0048] 2. Preparation method of biomass coating

[0049] Take demineralized water, aluminum starch dodecenyl succinate, dispersant, wetting agent, titanium dioxide, calcined kaolin, highly cross-linked porous starch and heavy calcium carbonate according to the stated parts by mass, add them to the disperser, and Disperse at high speed for 20 minutes at a high speed / min, reduce the rotational speed to 500r / min, add the composite modified starch emulsion, propylene glycol, and defoamer in order accordi...

Embodiment 2

[0060] Biomass interior wall paint is composed of the following materials: 25kg of compound modified starch emulsion, 3kg of aluminum starch dodecenyl succinate, 0.1kg of high-efficiency dispersant SN-5040 polycarboxylate sodium salt, 10kg of titanium dioxide, and wetting agent Sorbet Alcohol monostearate 0.2kg, highly cross-linked porous starch 6kg, calcined kaolin 5kg, heavy calcium carbonate 15kg, light calcium carbonate 5kg, propylene glycol 1.5kg, defoamer organic phosphate 0.3kg, demineralized water 28.9kg .

[0061] 2. Preparation method of biomass coating

[0062] Take demineralized water, aluminum starch dodecenyl succinate, dispersant, wetting agent, titanium dioxide, calcined kaolin, highly cross-linked porous starch, heavy calcium carbonate, and light calcium carbonate in parts by mass, add dispersant In the machine, disperse at a high speed of 1500r / min for 30min, reduce the rotational speed to 500r / min, add compound modified starch emulsion, propylene glycol, a...

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Abstract

The invention discloses a biomass internal wall paint and a preparation method thereof, and aims to solve the problems of high harmful substance content and especially high formaldehyde content in the existing internal wall paint. The preparation method comprises the following steps: taking softened water, dodecenyl starch aluminum succinate, dispersing agent, wetting agent, titanium white, calcined kaolin, highly-crosslinked porous starch, ground calcium carbonate and light calcium carbonate, adding into a dispersion machine, dispersing at the high speed of 1500 r / min for 20-40 minutes, lowering the speed to 500 r / min, sequentially adding the composite modified starch emulsion, propanediol and defoaming agent, and uniformly dispersing to obtain the composite modified starch-base biomass paint. The obtained biomass internal wall paint has the advantages of delicate paint film, scrub resistance, low VOC (volatile organic compound) content and no formaldehyde, has favorable humidity regulation function, and is green and environment-friendly.

Description

technical field [0001] The invention belongs to the field of environmental protection coatings, in particular to a method for biomass interior wall coatings. Background technique [0002] Because interior wall paint is directly painted on the inner surface of buildings or structures, it is closely related to people's life and work. As people pay more attention to health and environment, they pay more attention to the green, non-toxic and tasteless characteristics of interior wall paint. Because solvent-based coatings are harmful to the environment and human health, countries all over the world attach great importance to the development of water-based architectural coatings, and formulate relevant regulations to strictly limit the content of VOC (volatile organic compounds) in architectural coatings. Water-based architectural coatings are increasingly replacing solvent-based architectural coatings, and the main development trend is medium and high-end latex paints. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/02C09D103/02C09D7/12C08F251/00C08J3/24C08B31/18C08B31/12
Inventor 方悦田映良郑旺斌崔芸
Owner GANSU GLDARK NEW MATERIAL
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