Modified nanometer raw lacquer and preparation method thereof

A non-toxic lacquer and manufacturing method technology, applied in the direction of coating, etc., can solve the undiscovered problems of raw lacquer performance research and patent literature, and achieve the effect of overcoming allergies, expanding the scope of application, and high adhesion of the paint film

Active Publication Date: 2014-02-19
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no research or patent literature on the use of nano-cellulose and nano-silica synergistic effect to improve the performance of raw lacquer

Method used

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  • Modified nanometer raw lacquer and preparation method thereof

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Embodiment 1

[0037] In the novel nano-modified raw lacquer of the present embodiment and preparation method thereof, the mass percent of each component is as follows:

[0038]

[0039] According to the above mass ratio formula, the urushiol is selected to be extracted from one or more paints produced in Ankang paint, Hanzhong paint, Chengkou paint, Maoba paint, Qinling paint or other areas, and the frying pan fraction is more than 65%. Urushiol content is more than 50%.

[0040] According to the above mass ratio formula, the urushiol solution was heated to 60°C, kept warm, and the formaldehyde was heated to react with the catalyst for 3 hours. After the reaction, the temperature was raised to dehydrate. After dehydration, the temperature of the reactant was lowered to 110°C, and it was ready for use. In addition, add silane coupling agent and absolute ethanol to make a 0.5-1% solution, add nano-silica, disperse with ultrasonic waves for 30 minutes, and dry in an oven for 3-6 hours to ...

Embodiment 2

[0042] In the novel nano-modified raw lacquer of the present embodiment and preparation method thereof, the mass percent of each component is as follows:

[0043]

[0044] According to the above mass ratio formula, the urushiol is selected to be extracted from one or more paints produced in Ankang paint, Hanzhong paint, Chengkou paint, Maoba paint, Qinling paint or other areas, and the frying pan fraction is more than 65%. Urushiol content is more than 50%.

[0045]According to the above mass ratio formula, the urushiol solution was heated to 60°C, kept warm, and the formaldehyde was heated to react with the catalyst for 3 hours. After the reaction, the temperature was raised to dehydrate. After dehydration, the temperature of the reactant was lowered to 110°C, and it was ready for use. In addition, add silane coupling agent and absolute ethanol to make a 0.5-1% solution, add nano-silica, disperse with ultrasonic waves for 30 minutes, and dry in an oven for 3-6 hours to...

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Abstract

The invention discloses novel modified nanometer raw lacquer and a preparation method thereof. The modified nanometer raw lacquer comprises the following raw materials in percentage by mass: 15-40% of urushiol, 4-6% of aldehyde compound, 0.01-10% of nanocellulose / nanosilica hybridized filler, 0.01-1% of silane coupling agent, 0.5-2.5% of catalyst and 40-60% of a diluent, wherein the percentage sum of the raw materials is 100%. The modified nanometer raw lacquer has the advantages as follows: the sensitization problem of the raw lacquer is overcome; the modified nanometer raw lacquer can be sprayed, painted or brushed; mechanical operation is realized; the adhesive force of a lacquer film is high; the properties of acid, alkali, water, oil, wear resistance and glossiness are achieved; the environment-friendly nanocellulose is used as a modifying agent; the synthesis technique is simple; the conditions are easy to control; the raw lacquer quality is improved; the modified nanometer raw lacquer can be widely applied in the fields such as decoration, furniture, building, electron, machinery and chemical engineering.

Description

technical field [0001] The invention relates to a novel nano-modified raw lacquer and a preparation method thereof, belonging to the technical field of raw lacquer processing methods. Background technique [0002] The chemical components of raw lacquer are mainly urushiol (60%-70%), lacquer polysaccharide (5%-7%), laccase (< 1.0%) and water (20%-30%) (taking Chinese raw lacquer as an example). Although natural lacquer has many advantages, it is an excellent anti-corrosion material and can be used to coat metal, wood, concrete, plastic and other surfaces. The paint film has excellent properties such as abrasion resistance and water resistance, but there are also some disadvantages. For example, natural raw lacquer needs some specific temperature and humidity conditions to dry and form a film, has strong allergenicity, poor alkali and ultraviolet resistance, and Difficult to spray. The main ingredient in raw lacquer is urushiol, which is a derivative of catechol. There ar...

Claims

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Application Information

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IPC IPC(8): C09D161/12C09D7/12C08G8/20
Inventor 吴燕闫小星吴智慧桑瑞娟潘海云王颖睿
Owner NANJING FORESTRY UNIV
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