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Tung oil composite paint capable of adsorbing formaldehyde and preparation method of paint

A technology for adsorbing formaldehyde and compound paint, applied in the coating and other directions, can solve the problems of the decline of antibacterial properties of paint, not being a natural environmental protection material, restricting the application and market of natural tung oil, and achieving the effect of simple components and less additive content

Inactive Publication Date: 2014-12-24
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Antibacterial particles are filled into the paint, the two phases are separated, and exposed to the air for a long time, the particles will be separated from the organic phase, resulting in a decrease in the antibacterial performance of the paint
[0009] 2. The matrix of this type of polyester paint is a synthetic polymer material, limited by the inherent chemical properties of the polymer molecular chain, a variety of dispersants, curing agents, modifiers, and film-forming agents must be added to the components of the composite paint And other fillers are not natural environmental protection materials in the true sense
[0011] 1. Tung oil has always been used as a modifier to graft and modify industrially synthesized polyester polymer materials. The modified composite paint obtained cannot reflect the unique advantages of natural environmental protection paint based on tung oil.
[0012] 2. The utilization technology level of the existing tung paint is low, mainly focusing on using tung oil directly as functional coatings with properties such as anticorrosion and waterproofing, without considering the added value of composite paints with other special functions, which greatly limits the use of tung oil in my country. The application and market of natural tung oil

Method used

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  • Tung oil composite paint capable of adsorbing formaldehyde and preparation method of paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] D-A reaction:

[0036]Add 500 grams of tung oil into a three-necked bottle, raise the temperature to 120°C, and stir for 0.5 hours; pass through nitrogen protection, and continue stirring for 1 hour; add 2.5 grams of concentrated sulfuric acid catalyst and 120 grams of maleic anhydride in sequence; the reaction system Raise the temperature to 180°C and react for 4 hours under gas protection and stirring; during the D-A reaction process, the fatty acid triglyceride polymer in tung oil contains unsaturated fatty acid glycerides with conjugated diene structure and maleic anhydride. Synthesis reaction finally obtains the product of fatty acid triglyceride high molecular weight polymer containing acid anhydride structure.

[0037] Grafting reaction:

[0038] Weigh 60 grams of hydrazine hydrate with a content of 40%, add distilled water and stir, mix well and cool to 15°C; add hydrochloric acid with a content of 30% dropwise until the pH value of the reaction system is maint...

Embodiment 2

[0042] This example is substantially the same as Example 1, except that in the D-A reaction step, the reaction catalyst added is 3 grams of concentrated hydrochloric acid.

Embodiment 3

[0044] This example is substantially the same as Example 1, except that in the D-A reaction step, the alkene-based anhydride added is 150 grams of alkene-based succinic anhydride.

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Abstract

The invention discloses tung oil composite paint capable of adsorbing formaldehyde and a preparation method of the paint. The composite paint comprises the following target materials in percentage by mass: at least 30% of a fatty acid triglyceride high-molecular polymer with a maleic hydrazide structure, and tung oil, wherein a fatty acid triglyceride polymer in the tung oil is grafted with a high-molecular polymer with a hydrazide structure through chemical reactions of Diels-Alder (D-A) and the like. The polymer component capable of adsorbing formaldehyde in the composite paint and the synthetic method are innovative; the hydrazide structure of the composite paint can be used for continuously and lastingly capturing and removing formaldehyde molecules in an environment; the content of various additives in the component is low, so that the functions of the composite paint and the concept of natural environment-friendly plant paint can be reflected.

Description

technical field [0001] The invention relates to a tung oil composite paint for absorbing formaldehyde and a preparation method thereof. Background technique [0002] In recent years, with the improvement of human living standards, people have put forward higher requirements for paints for decoration. On the surface, it can improve the surrounding living environment, for example, it can absorb or inhibit formaldehyde molecules in furniture and air, etc., and play a functional role in improving the environment. [0003] Tung oil is the oil extracted from the oil-bearing tree species of my country's special product - three-year-old tung tree, thousand-year-old tung tree or other tung tree seeds of Euphorbiaceae. Tung oil is a traditional export commodity in my country. Its output and quality both rank first in the world. It has always enjoyed a high reputation in the international market and is in an exclusive position, accounting for 80% of the world's total output. The main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D191/00
Inventor 郑晓彤
Owner SOUTHWEST JIAOTONG UNIV