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Preparation method of nano silicon matting agent

A technology of matting agent and nano-silica gel, which is applied in the direction of coating, etc., can solve the problem that the matting effect of matting agent and the hand feeling of matting materials cannot be taken into account, and achieve the best matting effect, dense and uniform arrangement, and good hand feeling.

Inactive Publication Date: 2018-07-20
赵顺全
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is to provide a preparation method of a nano-silica matting agent for the defect that the matting effect of the matting agent and the feel of the matting material cannot be taken into account.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Weigh 600g of rice husk, ignite the rice husk to obtain rice husk ash, add the rice husk ash to the glass tank, add 500mL of 30% sodium hydroxide solution to the glass tank to soak the rice husk ash, after soaking for 10min, add to the glass tank Add 600mL of sulfuric acid solution with a mass fraction of 20% into the glass tank, heat up to 90°C, start the stirrer to stir at a speed of 70r / min, keep it warm for 20min, filter and remove the filter residue to obtain a gel; wash the gel with deionized water 3 times, then put the washed gel into an oven, heat up to 100°C, dry for 45 minutes to obtain a dry gel, put the dry gel in a nano high-pressure pulse mill, and pulverize it for 10 minutes to obtain a nano gel powder ; Mix nano gel powder and magnesium powder at a mass ratio of 3:1 to obtain a mixture, put the mixture into a carbonization furnace, heat up to 300°C, keep warm for 30 minutes to obtain micro-carbonized powder; Count, add 10 parts of polytetrahydrofuran dio...

example 2

[0025] Weigh 700g of rice husk, ignite the rice husk to obtain rice husk ash, add the rice husk ash to the glass tank, add 550mL of sodium hydroxide solution with a mass fraction of 30% to the glass tank to soak the rice husk ash, soak for 13min, and then add to the glass tank Add 700mL of sulfuric acid solution with a mass fraction of 20% into the glass tank, heat up to 95°C, start the stirrer to stir at a speed of 75r / min, keep warm for 25min, filter and remove the filter residue to obtain the gel; wash the gel with deionized water 4 times, then put the washed gel into an oven, heat up to 105°C, and dry for 50 minutes to obtain a dry gel. Put the dry gel in a nanometer high-pressure pulse mill, and pulverize it for 13 minutes to obtain a nanogel powder. ; Mix nano gel powder and magnesium powder at a mass ratio of 3:1 to obtain a mixture, put the mixture into a carbonization furnace, heat up to 330°C, keep warm for 35 minutes to obtain micro-carbonization powder; Count, add ...

example 3

[0027] Weigh 800g of rice husk, ignite the rice husk to obtain rice husk ash, add the rice husk ash to the glass tank, add 600mL of 30% sodium hydroxide solution to the glass tank to soak the rice husk ash, after soaking for 15min, add to the glass tank Add 800mL of sulfuric acid solution with a mass fraction of 20% into the glass tank, heat up to 100°C, start the stirrer to stir at a speed of 80r / min, keep the temperature for 30min, filter and remove the filter residue to obtain the gel; wash the gel with deionized water 5 times, then put the washed gel into an oven, heat up to 110°C, and dry for 55 minutes to obtain a xerogel. Put the xerogel in a nanometer high-pressure pulse mill, and pulverize it for 15 minutes to obtain a nanogel powder. ; Mix nano gel powder and magnesium powder at a mass ratio of 3:1 to obtain a mixture, put the mixture into a carbonization furnace, heat up to 350°C, keep warm for 40 minutes and micro-carbonize to obtain micro-carbonized powder; Count,...

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Abstract

The invention relates to a preparation method of a nano silicon matting agent, and belongs to the technical field of preparation of matting agent. Rice hull ash not only contains ash silica, but alsocontains rice hull carbonized wood fibers; in the micro-carbonization process, a magnesium powder can be quickly burned and oxidized into magnesium oxide, is adsorbed in micropores of the carbonized wood fibers, silica is coated in the carbonized wood fibers, the particle size of magnesium oxide crystals on the surface of a matting material is small, and the arraying is more dense and uniform, sothe hand felling is good; in the matting material prepared by the matting agent, light passes through the magnesium oxide crystals, is refracted to a carbon layer and reaches the surface of the silicananoparticles, and most of energy is absorbed by the carbon layer in a form of molecular motion; and finally, large-probability diffuse reflection happens due to small particle size of silica, so asto achieve excellent matting effect.

Description

technical field [0001] The invention relates to a method for preparing a nano silicon matting agent, belonging to the technical field of matting agent preparation. Background technique [0002] Matting agent is a kind of white carbon black, which is produced by chemical reaction synthesis, and is an amorphous micron-sized ultrafine silica particle. Applied to oil-based, water-based and powder-based coatings, ink systems and the surface of plastic and aluminum products, etc., to play a matting role. [0003] Existing extinction methods mainly include physical extinction and chemical extinction. Physical matting is to add a matting agent to the coating to make the surface uneven during the film forming process, increase the scattering of light and reduce reflection, thereby producing a matting effect. The main matting materials of physical matting are composed of metal soap, functional fine materials and waxes. Among them, synthetic silica belonging to the functional fine ma...

Claims

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Application Information

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IPC IPC(8): C09D7/20C09D7/61C09D7/65C08G18/75C08G18/66C08G18/48C08G18/34C08K3/04C08K3/36C08K9/12C08K3/22
CPCC08G18/4854C08G18/6692C08G18/755C08K3/04C08K3/22C08K3/36C08K9/12C08K2003/222C08K2201/011
Inventor 何俊欣林大伟
Owner 赵顺全
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