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High temperature oxidation resistant environment-friendly coating with lubricating and heat conducting functions

An anti-oxidation, high-temperature technology, applied in coatings, epoxy resin coatings, etc., to achieve excellent corrosion resistance, high-temperature precision forming, and excellent performance

Inactive Publication Date: 2012-01-25
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems and deficiencies of high-temperature anti-oxidation coatings for metal thermoforming at home and abroad, and propose a high-temperature anti-oxidation environmental protection coating with high-temperature lubrication and excellent thermal conductivity and its preparation method

Method used

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  • High temperature oxidation resistant environment-friendly coating with lubricating and heat conducting functions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Prepare water-based epoxy resin adhesive:

[0037] Waterborne epoxy resin adhesive is composed of epoxy resin A and epoxy curing agent B:

[0038] i.A component is made by mixing epoxy resin 128 and 6002 in a ratio of 1:1;

[0039] ii. Component B is a water-based epoxy curing agent prepared by chain-extending polyethylene polyamine through flexible chain segments. The specific process is as follows:

[0040]Add 50 ml of propylene glycol methyl ether, 0.3 mol of diethylenetriamine, and 0.15 mol of polyethylene glycol diglycidyl ether in sequence into a four-necked flask ventilated with nitrogen. Among them, polyethylene glycol diglycidyl ether is added dropwise at a rate of 1 ml / min. After 10 minutes of dropping, the nitrogen flow is stopped and the temperature is kept for 2 hours. After the heat preservation is completed, a mixture of 0.15 mol epoxy resin 618 and 30 ml propylene glycol methyl ether is added dropwise at a rate of 1 ml / min and kept warm for 3 hours...

Embodiment 2

[0046] (1) Preparation of water-based epoxy resin adhesive.

[0047] (2) Micronano treatment of the coating material: first, the nano colloidal silicon dioxide solution: 20g; the mixture of titanium dioxide, boron trioxide and chromium trioxide 8g; aluminum powder: 10g; carbon black: 5 grams; Paraffin wax: 2g; white corundum powder: 2g; water: 30g to make a mixed slurry, and then put the slurry into a stirring ball mill to grind for 1-2 hours, and then put it into an ultrafine grinding machine for grinding.

[0048] (3) Mix and stir the micro-nano particle slurry prepared in (2) and the water-based epoxy resin adhesive 30g prepared in (1) evenly. The specific operation is: first mix the nano-particle slurry and the water-based epoxy resin adhesive Group B Put it into a high-function mixer for kneading, then put it into a three-roll mill and knead it for 2 to 3 times, and then fully stir and mix with A component. So far, the preparation of the high-temperature anti-oxidation e...

Embodiment 3

[0051] (1) Preparation of water-based epoxy resin adhesive.

[0052] (2) Micro-nano treatment of coating materials: first, nano-colloidal silicon dioxide solution: 15g; mixture of titanium dioxide, boron trioxide, and zinc oxide 5g; magnesium powder: 10g; graphite: 6g; paraffin: 4g Brown corundum powder: 2g; water: 35g to make a mixed slurry, then put the slurry into a stirring ball mill for 1-2 hours, and then put it into an ultra-fine grinding machine for grinding.

[0053] (3) Mix and stir the micro-nano particle slurry prepared in (2) and the water-based epoxy resin adhesive 35g prepared in (1) evenly. The specific operation is: first mix the nano-particle slurry and the water-based epoxy resin adhesive Group B Put it into a high-function mixer for kneading, then put it into a three-roll mill and knead it for 2 to 3 times, and then fully stir and mix with A component. So far, the preparation of a high-temperature anti-oxidation environmental protection coating with high-t...

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Abstract

The invention relates to a high temperature oxidation resistant environment-friendly coating with the functions of high temperature lubricating and excellent heat conducting and a preparation method thereof. The coating comprises the raw materials with the percent as follows: 20-60% of waterborne epoxy resin adhesives, 5-30% of high temperature resistant nano materials, 10-20% of high heat conduction materials, 10-25% of other functional fillers and 20-30% of water. The high temperature resistant materials are nano colloidal silicon dioxide solution and several kinds of metallic oxides; the high heat conduction materials are micron-sized metal particles. The materials of the coating are subjected to two-step grinding to enable the grains to be micron-nano-sized and then are subjected to the mixing process of mixing and kneading to achieve the effect that all the components are fully hybridized and blended. By adopting the waterborne epoxy resin adhesives, the coating can realize room temperature curing and high temperature use, and the temperature can reach 1200 DEG C after long-term use. Under high temperature, the waterborne epoxy resin adhesives can function as oxidation resistant sacrifice protective agents. Along with decomposition and volatilization of the epoxy resin, the coating is converted from the organic-inorganic hybridizing and blending type to a compact compound film fusing the lubricating materials, heat conduction materials and high temperature resistant materials, thus playing good roles of lubricating, heat conducting and oxidation resisting. The inventive product is applicable to occasions where the metal matrix needs oxidation resistant processing under a high temperature condition, especially the occasions where the metal needs precision forming during the forming process and at the same time the workpiece is quenched and hardened in a die. The invention is an environment-friendly coating without any organic solvent, and realizes the waterborne preparation without any peculiar smell or pollution, is environment-friendly and healthy, and apt to industrial popularization.

Description

technical field [0001] The invention relates to the field of environment-friendly coatings, in particular to a high-temperature anti-oxidation environment-friendly coating with high-temperature lubrication and excellent heat conduction functions for metal thermoforming surfaces and a preparation method thereof. Background technique [0002] Statistics show that the annual loss caused by metal corrosion in the world is more than 700 billion US dollars; in China, the loss caused by metal corrosion reached 500 billion yuan in 2000, accounting for about 5% of the gross national product, and the trend is still increasing. High-temperature oxidation of metals is one of the research focuses in the field of metal corrosion and protection. At high temperature, due to the affinity of oxygen, metals are prone to lose electrons and be oxidized, and a rough, loose, brittle, and easy-to-fall oxide layer is formed on the surface, causing the metal to lose its proper properties. This not o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/00
Inventor 范广宏周永松任明伟姜超
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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