Bio-based waterborne paint and preparation method thereof

A water-based paint, bio-based technology, applied in the field of paint, can solve the problems of environmental and human damage, non-biodegradation of waste paint film, etc., to reduce environmental protection and reduce dependence on petroleum resources.

Inactive Publication Date: 2018-07-20
SHENZHEN OCEANPOWER NEW MATERIALS TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the use of ordinary water-based paint, a certain amount of solvent is required, and the waste paint film cannot be biodegraded, which still brings great harm to the environment and human body

Method used

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  • Bio-based waterborne paint and preparation method thereof
  • Bio-based waterborne paint and preparation method thereof
  • Bio-based waterborne paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The present invention also provides a kind of preparation method of above-mentioned bio-based water-based coating, comprises the steps:

[0025] (1) Weigh each raw material by weight percentage, 8-70% natural film-forming substance; 0-40% pigment; 0-65% filler; 8-40% modified wood powder; 0.2-1.0% Thickener; 0-2% drier; 0.1-0.4% defoamer; 0.1-0.25% wetting agent; 0.5-1.2% dispersant; 8-20% water;

[0026] (2) Add wetting agent, dispersant and defoamer in water in turn, stir at a speed of 3-5m / s, then slowly add pigments, and then disperse or sand-grind pigments and fillers at a speed of 20-25m / s Degree to less than 50μm;

[0027] (3) At a stirring speed of 6-10m / s, add water, filler, modified wood powder, defoamer, preservative and natural film-forming substance to the dispersion slurry obtained in step (2), and then add thickener and adjust the rotational viscosity of the slurry to 6×10 4 ~14×10 4 mPa·s, so as to obtain bio-based water-based coatings.

Embodiment 1

[0031]

[0032]

[0033] Add 1-10 components in an appropriate amount of water in turn, stir at a speed of 3-5m / s, then slowly add pigments, and then disperse or sand-mill the pigments and fillers at a speed of 20-25m / s to a fineness of less than 50μm;

[0034] At a stirring speed of 6-10m / s, add the remaining water and 11-14 components in sequence to the dispersion slurry obtained in step (2), then add 15-18 components and adjust the rotational viscosity of the slurry to 6× 10 4 ~14×10 4 mPa·s, so as to obtain bio-based water-based coatings.

[0035] The performance index of the bio-based water-based paint of gained is as shown in table 1:

[0036] Table 1

[0037]

Embodiment 2

[0039]

[0040] Add 1-10 components in an appropriate amount of water in turn, stir at a speed of 3-5m / s, then slowly add pigments, and then disperse or sand-mill the pigments and fillers at a speed of 20-25m / s to a fineness of less than 50μm;

[0041] At a stirring speed of 6-10m / s, add the remaining water and 11-14 components in sequence to the dispersion slurry obtained in step (2), then add 15-18 components and adjust the rotational viscosity of the slurry to 6× 10 4 ~14×10 4 mPa·s, so as to obtain bio-based water-based coatings.

[0042] The performance index of the bio-based water-based coating of gained is as shown in table 2:

[0043] Table 2

[0044]

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Abstract

The invention discloses a bio-based waterborne paint. The bio-based waterborne paint is prepared from the following components by weight: 8 to 70% of a natural film forming substance, 0 to 40% of a pigment, 0 to 65% of a filling material, 8 to 40% of modified wood powder, 0.1 to 1.0% of a thickening agent, 0 to 2% of a drier, 0.1 to 0.4% of an antifoaming agent, 0.1 to 0.25% of a wetting agent, 0.5 to 1.2% of a dispersing agent and 8 to 20% of water. The indexes like water resistance, low-temperature stability and application properties of the bio-based waterborne paint provided by the invention accord with related national standards in China; and the bio-based waterborne paint has the advantages of no toxicity, zero VOC, no heavy metal and the like and has great significance to reductionin dependence on petroleum resources, environmental protection, etc. The invention also discloses a preparation method for the bio-based waterborne paint.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a bio-based water-based coating, and also to a preparation method of the bio-based water-based coating. Background technique [0002] Due to the depletion of petroleum resources, oil-based paints, coatings and inks not only consume precious petroleum resources, but also emit a large amount of harmful solvent gases into the air. The development of environmentally friendly coatings has become a top priority, especially water-based Coatings have become the main development direction of coatings. However, water-based paints still use synthetic emulsions that use petroleum monomers as raw materials. It is becoming more and more important to find other resources to replace petroleum as raw materials for synthetic polymer materials. Obtaining alternatives to traditional petroleum products is beneficial to environmental protection and conservation of petroleum resources. Significance. Certain s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D201/00C09D197/02C09D7/61C09D7/63C09D7/65
CPCC09D201/00C08L2205/035C09D197/02C08L97/02C08K13/02C08K2003/2241C08K2003/3045C08K2003/265C08K3/34C08K3/346C08K2003/267C08L101/00
Inventor 刘结生王守臣何唯平
Owner SHENZHEN OCEANPOWER NEW MATERIALS TECH
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