Preparation method of rubber paint containing epoxidized gutta-percha

A technology of eucommia rubber and epoxidation, which is applied in epoxy resin coatings, rubber derivative coatings, anti-corrosion coatings, etc., can solve the problems of poor aging resistance, low solubility, and large amount of solvents, and achieve resource shortage and corrosion resistance Good performance and improved corrosion resistance

Active Publication Date: 2019-02-26
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But as far as the current situation is concerned, there are still these problems: the adhesion to the substrate is not high, and it needs to be mixed with other resins (such as epoxy resin) or modified to improve the adhesion; because epoxy resin is difficult to dissolve in aqueous solution , and the use of organic solvents is expensive, volatile, and some are toxic and have high VOC (volatile organic compound content), which does not meet the current environmental protection requirements, and the solubility is low, and the amount of solvent required is large, which is very easy to cause pollution and waste
Eucommia gum is acid-resistant, alkali-resistant, water-resistant, corrosion-resistant, aging-resistant, wear-resistant, and fatigue-resistant; it also has good film-forming properties, and the resulting film has high strength, good adhesion, low dielectric loss, and breathable Secondly, the solvent of eucommia rubber coating is a low-toxic solvent, which is non-irritating to the skin and greatly improves the effect of coating use; the disadvantage is that the adhesion strength is not high, and the aging resistance is poor, and it needs to be combined with other resins ( Such as epoxy resin) mixed or modified to improve adhesion

Method used

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  • Preparation method of rubber paint containing epoxidized gutta-percha
  • Preparation method of rubber paint containing epoxidized gutta-percha
  • Preparation method of rubber paint containing epoxidized gutta-percha

Examples

Experimental program
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preparation example Construction

[0027] The preparation of epoxidized eucommia rubber, the preparation route is as follows:

[0028]

Embodiment 1

[0030] Add 5g EUG and 70ml petroleum ether into a 250ml container equipped with a stirrer, thermometer and constant pressure funnel, heat to 50°C and start stirring. After the EUG is completely dissolved, add 40ml of distilled water dropwise at a fixed rate for 30min, stir for 2h, and then add Add 2.5ml of formic acid, add 15ml of hydrogen peroxide dropwise at a rate of 1ml / min, stir at 50°C for 2h, wash EEUG with alcohol until neutral. Dry to constant weight in a vacuum oven at room temperature, and the epoxy degree measured after drying is 21.1%.

[0031] Dissolve 1g of epoxidized eucommia rubber in 20ml of ethyl acetate, heat and stir in a water bath, then dissolve 2g of epoxy resin in 5ml of ethyl acetate, heat and stir in a water bath, and finally add 1.5 g curing agent and 0.03g defoaming agent, stir evenly to coat the board to cure and test the performance of the coating.

Embodiment 2

[0033] Add 10g EUG and 140ml petroleum ether into a 500ml container equipped with a stirrer, thermometer and constant pressure funnel, heat to 55°C and start stirring. After the EUG is completely dissolved, add 80ml of distilled water dropwise at a fixed rate for 30min, stir for 2h, then add 5ml of formic acid, 30ml of hydrogen peroxide was added dropwise at a rate of 1ml / min, stirred at 55°C for 2h, and the EEUG was washed with alcohol until neutral. Dry to constant weight in a vacuum drying oven at room temperature, and the epoxy degree measured after drying is 35.8%.

[0034] Dissolve 1g of epoxidized eucommia rubber in 25ml of chloroform, heat and stir in a water bath, then dissolve 1g of epoxy resin in 5ml of ethyl acetate, heat and stir in a water bath, and finally add 1g of curing agent and 0.02g defoamer, stir evenly to coat the board to cure and test the performance of the coating.

[0035] Figure 1 is the electrochemical analysis diagram of different epoxy degrees u...

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Abstract

The invention discloses a preparation method of a rubber paint containing epoxidized gutta-percha, and belongs to the field of rubber paint preparation method. According to the preparation method, gutta-percha is subjected to two times of purification, emulsion method is adopted for epoxidation modification of the gutta-percha so as to obtain epoxidized gutta-percha; the prepared epoxidized gutta-percha is dissolved in a certain amount of a solvent, and an obtained mixture is subjected to heating stirring in a water bath pan; after complete dissolving of gutta-percha, a certain amount of resinand a certain amount of a solvent are mixed at a certain mass amount, a certain time period later, a certain amount of a curing agent and a certain amount of an anti-foaming agent are added into an obtained mixture, ultrasonic vibration is adopted for mixing, and stirring is adopted for uniform mixing so as to obtain a coating, and paint performance is detected. According to the preparation method, gutta-percha epoxy degree is changed and matrix ratio is changed for coating, and coating layer performance is tested. The obtained rubber paint is uniform in dispersion, and excellent in appearance and performance, and the paint corrosion resistance and clunging fore are improved effectively.

Description

technical field [0001] The invention relates to a preparation method of a rubber coating, in particular to a preparation method of a rubber coating containing epoxidized eucommia ulmoides. Background technique [0002] The performance of the coating determines the protective effect of the coating. The protective coating used in the marine heavy-duty anti-corrosion field should have the following advantages: good mechanical properties, resistance to rainwater, seawater erosion, collision and even friction; good stability, acid, alkali, salt, and chemical resistance , oil resistance, aging resistance and UV resistance; strong adhesion, strong adhesion and bonding performance with the substrate; easy construction, green and environmental protection. But as far as the current situation is concerned, there are still these problems: the adhesion to the substrate is not high, and it needs to be mixed with other resins (such as epoxy resin) or modified to improve the adhesion; becau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D115/00C09D5/08
CPCC09D5/08C09D115/00C09D163/00C08L15/00C08L63/00
Inventor 方庆红冯潇
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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