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Preparation method of high-viscosity high-strength raw lacquer

A high-strength, high-viscosity technology, applied in coatings, natural resin coatings, etc., can solve the problems of poor wear resistance, slow curing rate of raw paint, poor viscosity, etc., to increase the contact probability, strengthen the adhesion performance, and improve the viscosity. Effect

Inactive Publication Date: 2019-07-05
常州三伊化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a preparation method of high-viscosity and high-strength raw lacquer in view of the defects of slow curing rate, poor viscosity and poor wear resistance after curing of the current raw lacquer

Method used

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  • Preparation method of high-viscosity high-strength raw lacquer

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Preparation of mixed solution:

[0033] Put sawdust and crop straw into an oven at a mass ratio of 3:1, dry at a temperature of 70°C for 5 hours, and put them into a planetary ball mill after drying. Grind for 2 hours to obtain a grinding mixture, put the grinding mixture and hydrochloric acid with a mass fraction of 4% into a beaker at a mass ratio of 1:10, and mix and stir for 45 minutes with a stirring device at a speed of 300 r / min to obtain a mixed slurry;

[0034] Put the above mixed slurry into the reactor, fill the reactor with nitrogen until the pressure in the reactor rises to 1.6MPa, raise the temperature in the reactor to 160°C, and add a mass fraction of 3 ~6% sodium bicarbonate solution adjusts the pH value to neutral to obtain a reaction hydrolyzate, and puts the reaction hydrolyzate and biogas liquid into the fermenter at a mass ratio of 15:1;

[0035] Seal the above-mentioned fermentation tank, place it in a greenhouse with a room temperature of 32°C, ...

Embodiment 2

[0042] Preparation of mixed solution:

[0043] Put sawdust and crop straw into an oven at a mass ratio of 3:1, dry for 5.5 hours at a temperature of 75°C, and put them into a planetary ball mill after drying. Grind for 2.5 hours to obtain a grinding mixture, put the grinding mixture and hydrochloric acid with a mass fraction of 6% into a beaker at a mass ratio of 1:10, and mix and stir for 55 minutes with a stirring device at a speed of 350 r / min to obtain a mixed slurry;

[0044] Put the above mixed slurry into the reactor, fill the reactor with nitrogen until the pressure in the reactor rises to 1.8 MPa, raise the temperature in the reactor to 170°C, and react at constant temperature and pressure for 70 minutes to dropwise add a mass fraction of 5 % of sodium bicarbonate solution to adjust the pH value to neutral to prepare a reaction hydrolyzate, and put the reaction hydrolyzate and biogas liquid into the fermenter at a mass ratio of 15:1;

[0045] Seal the above-mentioned...

Embodiment 3

[0052] Preparation of mixed solution:

[0053] Put sawdust and crop straw into an oven at a mass ratio of 3:1, dry for 6 hours at a temperature of 80°C, and put them into a planetary ball mill after drying at a ball-to-material ratio of 10:1 and a rotational speed of 180r / min. Grind for 3 hours to obtain a grinding mixture, put the grinding mixture and hydrochloric acid with a mass fraction of 8% into a beaker at a mass ratio of 1:10, and mix and stir for 60 minutes with a stirring device at a speed of 400 r / min to obtain a mixed slurry;

[0054] Put the above mixed slurry into the reactor, fill the reactor with nitrogen until the pressure in the reactor rises to 2.0MPa, raise the temperature in the reactor to 180°C, and react at constant temperature and pressure for 80 minutes to dropwise add a mass fraction of 6 % of sodium bicarbonate solution to adjust the pH value to neutral to prepare a reaction hydrolyzate, and put the reaction hydrolyzate and biogas liquid into the fer...

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Abstract

The invention discloses a preparation method of high viscosity high strength raw lacquer, and belongs to the technical field of paint preparation. The preparation method comprises the steps: performing drying, mixing and grinding on wood chips and straw firstly, then performing immersion in hydrochloric acid for a reaction after grinding so as to prepare mixed slurry, then performing high-temperature high-pressure treatment on the mixed slurry so as to obtain a reaction hydrolyzate, then putting the reaction hydrolyzate and a biogas liquid into a fermentation tank for fermentation so as to obtain a fermented product, then performing microwave treatment on the fermented product, adding aluminum sulfate after microwave treatment, performing mixing and stirring, then performing concentrationdrying after stirring so as to obtain a dried product, putting the dried product and graphite sheets into a sulfuric acid solution, performing even stirring, then adding potassium permanganate for a reaction, performing filtration after the reaction so as to obtain a filter cake, and finally performing stirring and mixing on the filter cake, a raw lacquer liquid and other aids so as to obtain thehigh-viscosity high-strength raw lacquer.

Description

technical field [0001] The invention discloses a preparation method of high-viscosity and high-strength raw lacquer, which belongs to the technical field of paint preparation. Background technique [0002] Raw lacquer has been used in my country for thousands of years and is known as the "King of Paint". Raw lacquer is the only natural resin coating that completes the biotransformation process and naturally dries to form a film under the catalysis of biological enzymes. The paint film of raw lacquer is bright and bright in color, and has excellent durability, corrosion resistance, solvent resistance and insulation performance. As an excellent decorative and protective material, raw lacquer is widely used in industries such as petroleum, chemical industry, textile, printing and dyeing, handicrafts and high-end furniture. However, the film-forming conditions of raw lacquer are relatively harsh, and it must be dried at a certain temperature and humidity to form a film. The an...

Claims

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Application Information

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IPC IPC(8): C09D193/00C09D7/61C09D7/63C09D7/65
CPCC09D7/61C09D7/63C09D7/65C09D193/00C08L97/005C08L1/02C08K3/042C08K5/098
Inventor 黄勇
Owner 常州三伊化工有限公司
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