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Polysaccharide compounded quick self-drying raw lacquer and preparation method thereof

A composite polysaccharide and raw lacquer technology, applied in the field of coatings, can solve the problems of no literature report, unclear function, etc., and achieve the effects of good application prospect and market promotion value, convenient operation and easy preservation.

Inactive Publication Date: 2013-10-02
湖北宝石花工艺品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the role of polysaccharides in the drying process of raw lacquer is still unclear, and there is no literature report on the study of using polysaccharides to modify raw lacquer emulsions to improve the self-drying speed and paint film properties of raw lacquer coatings

Method used

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  • Polysaccharide compounded quick self-drying raw lacquer and preparation method thereof
  • Polysaccharide compounded quick self-drying raw lacquer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: Add 1% (w / v) carboxymethyl chitin to the lacquer emulsion at a ratio of 1% by mass, stir for 5 minutes, then add water-soluble lacquer polysaccharide powder at a ratio of 5% by mass, and stir for 35 minutes , Homogenized by a homogenizer for 30 minutes to prepare the raw lacquer of the complex polysaccharide.

Embodiment 2

[0013] Embodiment 2: in the chitosan acetic acid solution of 50ml 2% (w / v), drip the silica sol 10ml of 2% (w / w) with the speed of 0.1ml / s, stir 3h at 50 ℃, obtain silica sol - Chitosan solution.

[0014] The obtained silica sol-chitosan solution was added into the raw lacquer emulsion at a ratio of 5% by mass, stirred for 20 minutes, and ball milled for 1 hour to prepare the raw lacquer of the complex polysaccharide.

Embodiment 3

[0015] Embodiment 3: Take 100g of the original lacquer emulsion in a 500ml three-necked flask, and mechanically stir with the open mouth in a water bath at 40°C until the moisture content in the paint solution is 3% to 5%, to obtain the water-removing raw lacquer.

[0016] Add 2% (w / v) sulfoethylcellulose aqueous solution to the water-removing raw lacquer at a mass percentage of 5%, stir for 20 minutes, and then use a homogenizer to homogenize for 1 hour to obtain a complex polysaccharide raw lacquer.

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Abstract

The invention relates to a quick self-drying polysaccharide substance compounded natural raw lacquer and a preparation method thereof. The polysaccharide compounded raw lacquer is prepared by adding water-soluble or acid-soluble polysaccharide and derivatives of the polysaccharide into natural raw lacquer, and uniformly dispersing, wherein the polysaccharide accounts for 0.01 to 10 mass percent of the compounded raw lacquer. The polysaccharide compounded raw lacquer can be quickly self-dried at room temperature and relative humidity of 40-100 percent, has high stability, has adhesion, flexibility and impact strength superior to those of an original raw lacquer, is poisonless and harmless to a human body, does not pollute environment, is natural and environment-friendly and can be widely applied to industry, restoration of cultural relics, and daily life of residents.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to a method for preparing fast self-drying composite raw lacquer by adding polysaccharides into natural raw lacquer liquid. Background technique [0002] Raw lacquer is a white water-in-oil emulsion secreted from the bast of lacquer trees after being cut by hand. It is the oldest natural paint known to mankind and is a specialty of our country. The main components of raw lacquer include urushiol (60-70%), gum (5-7%), water-insoluble glycoprotein (~1%), sumac enzyme (~0.24%) and water (20-25%), etc. . Raw lacquer film is hard and bright, wear-resistant, heat-resistant, and corrosion-resistant. Unearthed lacquerware can still remain intact after thousands of years, so raw lacquer is known as the "king of paint". However, for a long time, this kind of natural green paint has not been widely used. This is mainly due to the sensitization of raw lacquer, and its high viscosity is difficult to appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D193/00C09D105/14C09D103/12C09D105/00C09D105/04C09D105/08C09D101/02C09D7/12
Inventor 吴昊洪克俭杨建红张秋红
Owner 湖北宝石花工艺品有限公司
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