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Graphite high-temperature antioxidant capable of being quickly dried at normal temperature and application thereof

A fast-drying, anti-oxidant technology, applied in the field of graphite anti-oxidation, can solve problems such as difficult large-scale industrialization and practical application obstacles

Active Publication Date: 2020-10-27
江西宁新新材料股份有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is necessary to sinter the impregnated graphite samples at a high temperature above 300°C to achieve the protective effect. For large-scale graphite products, it is difficult to carry out large-scale industrialization, which has caused certain obstacles in practical application.

Method used

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  • Graphite high-temperature antioxidant capable of being quickly dried at normal temperature and application thereof
  • Graphite high-temperature antioxidant capable of being quickly dried at normal temperature and application thereof
  • Graphite high-temperature antioxidant capable of being quickly dried at normal temperature and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] (1) Select graphite base material, polish the surface and ultrasonically treat it with absolute ethanol. After the surface is dry, put it in an oven and place it at 100°C for 2 hours for later use.

[0026] (2) Preparation of graphite high-temperature antioxidant that can be quickly dried at room temperature: weigh 57g aluminum dihydrogen phosphate solution, 6g sodium hexametaphosphate, 1g disodium hydrogen phosphate, 7g silica sol, 2g silane coupling agent, dodecyl benzene sulfonate Sodium 1g is mixed with 3g of glycerol and 23g of distilled water for 30min ultrasonic treatment to obtain a graphite high temperature antioxidant that is quickly dried at room temperature;

[0027] (3) Put the processed graphite sample into the prepared graphite high-temperature antioxidant that is quickly dried at room temperature and press it under vacuum to 0.5 MPa, and hold the pressure for 10 minutes, so that the inside and the surface are fully adsorbed on the uniform room temperature fast...

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Abstract

The invention provides a graphite high-temperature antioxidant capable of being quickly dried at normal temperature. The graphite high-temperature antioxidant comprises phosphate, a silane coupling agent, silica sol, a surfactant and a solvent. The application method comprises the following steps: pretreating the surface of the graphite base material, carrying out vacuum pressure impregnation on the graphite base material by using the graphite high-temperature antioxidant which is quickly dried at normal temperature, and standing in a normal-temperature environment for 0.5-1 hour. The graphitehigh-temperature antioxidant capable of being quickly dried at the normal temperature fully wets graphite blocks, enters air holes, seals the air holes and forms a protective layer so that the effectof isolating graphite from oxygen is achieved, and the high-temperature antioxidant effect is achieved. The high-temperature-resistant coating has a good anti-oxidation effect and plays a role in protecting the graphite base material.

Description

Technical field [0001] The invention relates to a graphite high-temperature antioxidant that is quickly dried at normal temperature and its application, and belongs to the technical field of graphite anti-oxidation. Background technique [0002] Graphite has the characteristics of high density and high strength. It is a good high-temperature structural material. It can be used as nuclear graphite, electrodes for electrical discharge machining, structural materials for rocket technology, and aluminum plating. Graphite has a wide range of applications in many occasions, especially under high temperature conditions, graphite has very good high temperature strength. But its fatal problem is that it is rapidly oxidized in the presence of oxygen, which seriously affects the performance and service life. Therefore, it is necessary to improve the oxidation resistance of graphite. The usual practice is to provide a coating on the graphite substrate to improve the oxidation resistance of ...

Claims

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Application Information

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IPC IPC(8): C04B41/81
CPCC04B41/81C04B41/5035C04B41/5015C04B41/4905C04B41/463C04B41/46C04B41/4539C04B41/0072
Inventor 吴相福陈香萍田家利邓达琴洪文晶李海航李江标刘春根邓聪秀
Owner 江西宁新新材料股份有限公司
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