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Raw lacquer modifying method

A raw lacquer and modification technology, applied in the direction of natural resin coatings and coatings, can solve the problems of poor gloss, low purity and viscosity, and different quality of raw lacquer, and achieve the effect of good brightness, high purity and good quality.

Inactive Publication Date: 2013-01-16
周建华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the raw lacquer collected from the lacquer tree is used directly in industry, due to the inevitable fall of some sundries during the collection process, and the inclusion of moisture and other impurities, the quality of the obtained raw lacquer varies, with low purity and viscosity and poor gloss. Difference

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A modification method of raw lacquer, comprising the following steps:

[0023] 1) Stir 100kg of raw lacquer collected from lacquer trees for 70 minutes, add NaCl solution with a mass concentration of 20% of the weight of the raw lacquer, and continue stirring for 120 minutes, and then use a 150-mesh screen for coarse filtration;

[0024] 2) Continue stirring the material obtained in step 1) for 120 min at a stirring speed of 50 rpm, then add 5% ammonia water by weight of raw lacquer and continue stirring for 120 min, then add NaCl solution with 3% weight of raw lacquer, the mass of ammonia water Concentration is 25%, and the mass concentration of described NaCl solution is 15%, continues to stir 90min, then carries out secondary filtration with 400 mesh sieves;

[0025] 3) Stir the material obtained in step 2) and bake at the same time. Use ultraviolet light bulbs for baking. Eight 300-watt ultraviolet light bulbs are arranged per square meter of paint surface. The dist...

Embodiment 2

[0027] A modification method of raw lacquer, comprising the following steps:

[0028] 1) Stir 100kg of lacquer collected from lacquer trees for 90 minutes, add NaCl solution with a mass concentration of 15% of the lacquer weight of 22% of the lacquer, continue stirring for 120 minutes, and then use a 120-mesh screen for coarse filtration;

[0029] 2) Continue stirring the material obtained in step 1) for 100 min at a stirring speed of 40 rpm, then add ammonia water with 4% weight of raw lacquer and continue stirring for 120 min, then add NaCl solution with 2% weight of raw lacquer, the mass of ammonia water Concentration is 20%, and the mass concentration of described NaCl solution is 20%, continue to stir 90min, then carry out secondary filtration with 500 mesh sieves;

[0030] 3) Stir the material obtained in step 2) and bake at the same time. Use ultraviolet light bulbs for baking. Ten 280-watt ultraviolet light bulbs are arranged per square meter of paint surface. The dist...

Embodiment 3

[0032] A modification method of raw lacquer, comprising the following steps:

[0033] 1) Stir 100kg of raw lacquer collected from lacquer trees for 80 minutes, add NaCl solution with a mass concentration of 18% of the raw lacquer weight of 21%, continue stirring for 120 minutes, and then use a 120-mesh screen for coarse filtration;

[0034] 2) Continue stirring the material obtained in step 1) for 100 min at a stirring speed of 45 rpm, then add ammonia water with 4% weight of raw lacquer and continue stirring for 120 min, then add NaCl solution with 2% weight of raw lacquer, the mass of ammonia water Concentration is 23%, and the mass concentration of described NaCl solution is 23%, continue to stir 90min, then carry out secondary filtration with 450 mesh sieves;

[0035] 3) Stir the material obtained in step 2) and bake at the same time. Use ultraviolet light bulbs for baking. Arrange nine 300-watt ultraviolet light bulbs per square meter of paint surface. The distance betwee...

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PUM

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Abstract

The invention discloses a raw lacquer modifying method and belongs to the field of raw lacquer processing methods. The raw lacquer modifying method includes the steps: 1) stirring raw lacquer collected from lacquer trees for 70-90min, adding NaCl solution accounting for 20-22% of the weight of the raw lacquer, continuing stirring for 120min and then performing coarse filtration; 2) continuing stirring materials obtained in the step 1) for 100-120min, then adding ammonia water accounting for 4-5% of the weight of the raw lacquer, continuing stirring for 120min, adding NaCl solution accounting for 2-3% of the weight of the raw lacquer, continuing stirring for 90min and performing secondary filtering; and 3) stirring materials obtained in the step 2) while baking, adding H2O2 accounting for 2-3% of the weight of raw lacquer and distilled spirit accounting for 3-5% of the weight of the raw lacquer, continuing stirring and baking for 7-8 hours, and performing fine filtering, so that modified raw lacquer is obtained. By the aid of the technical process that multiple filtering is performed, the NaCl solution, the ammonia water, the H2O2 and the distilled spirit are added for baking by ultraviolet lamps at different stirring speeds, the obtained raw lacquer is high in purity, good in viscosity, strong in glossiness and high in quality.

Description

technical field [0001] The invention relates to a modification method for processing lacquer liquid obtained from lacquer tree into finished raw lacquer. Background technique [0002] Raw lacquer is also called national lacquer or earth lacquer. It is the natural sap cut from the lacquer tree. The lacquer liquid mainly contains urushiol, laccase, tree layer, cuticle and water. Raw lacquer has good corrosion resistance. , strong resistance, acid resistance, moisture resistance, insulation, high temperature resistance and other functions, it has the reputation of "the king of coatings". The paint film of raw lacquer is hard, with high wear resistance, bright and elegant, strong adhesion, high temperature resistance Radiation protection and other properties. [0003] Because natural raw lacquer has irreplaceable characteristics and uses of chemical lacquer, it has been used until now and is deeply loved by consumers. However, if the raw lacquer collected from the lacquer tree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D193/00C09D7/12
Inventor 周建华
Owner 周建华
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