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Carbon/carbon composite material binder, bonding method and carbon/carbon composite material member

A technology of carbon composite materials and binders, applied in the direction of aldehyde/ketone condensation polymer binders, adhesives, adhesive types, etc., can solve the problem that the binder is not suitable for high temperature and corrosive environments, and the binder is difficult to fully meet the application requirements and other problems, to achieve the effect of good resistance to strong acid, convenient preparation, and easy access to raw materials

Active Publication Date: 2015-10-14
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at high temperature, tungsten can react with hydrochloric acid, sulfuric acid, nitric acid, and hydrofluoric acid, and this high-temperature adhesive is not suitable for high-temperature corrosive environments.
[0007] In summary, the existing carbon / carbon composite binders are difficult to fully meet the application requirements in high temperature strong acid and alkali corrosion environment.

Method used

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  • Carbon/carbon composite material binder, bonding method and carbon/carbon composite material member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Weigh 10 grams of phenolic resin (solid content 60%, viscosity 0.5 Pa s), 1 gram of chopped carbon fiber powder (length 100 ± 50 μm) and mix well to obtain a corrosion-resistant high-strength adhesive;

[0034] (2) Using carbon / carbon composite material as the bonding material, adopt absolute ethanol and acetone to clean and dry the bonding material;

[0035] (3) After brushing uniform adhesive on the joint surface of the bonding material, let it stand for 2 hours and then bond, and the bonding pressure is 1MPa;

[0036] (4) The bonded carbon / carbon composite material sample cured at room temperature was raised to 180°C for 2 hours at a heating rate of 1°C / min;

[0037] (5) Place the cured bonded carbon / carbon composite material in a heat treatment furnace, and raise the temperature to 1000°C, 1100°C, 1200°C, 1300°C, 1400°C, Heat treatment at 1500°C for 2 hours at high temperature. After taking it out, test the bond shear strength at different heat treatment temperat...

Embodiment 2

[0039] (1) Weigh 10 grams of phenolic resin (solid content 65%, viscosity 1.0 Pa s), 2 grams of chopped carbon fiber powder (length 200 ± 50 μm) and mix well to obtain a corrosion-resistant high-strength adhesive;

[0040] (2) Using carbon / carbon composite material as the bonding material, use absolute ethanol and acetone to clean and dry the bonding material

[0041] (3) After brushing uniform adhesive on the joint surface of the adhesive material, let it stand for 4 hours before bonding, and the bonding pressure is 2MPa;

[0042] (4) The bonded carbon / carbon composite material sample cured at room temperature was raised to 180°C for 2 hours at a heating rate of 3°C / min;

[0043] (5) Put the cured bonded carbon / carbon composite material in a heat treatment furnace, and raise the temperature to 1000°C, 1100°C, 1200°C, 1300°C, 1400°C, Heat treatment at 1500°C for 2 hours at high temperature. After taking it out, test the bond shear strength at different heat treatment temperat...

Embodiment 3

[0045] (1) Weigh 10 grams of phenolic resin (solid content 70%, viscosity 1.5 Pa s), 3 grams of chopped carbon fiber powder (length 300 ± 50 μm) and mix well to obtain a corrosion-resistant high-strength adhesive;

[0046] (2) Using carbon / carbon composite material as the bonding material, use absolute ethanol and acetone to clean and dry the bonding material

[0047] (3) After applying a uniform adhesive on the joint surface of the adhesive material, let it stand for 6 hours before bonding, and the bonding pressure is 3MPa;

[0048] (4) The bonded carbon / carbon composite material sample cured at room temperature was raised to 180°C for 2 hours at a heating rate of 5°C / min;

[0049] (5) Put the cured bonded carbon / carbon composite material in a heat treatment furnace, and raise the temperature to 1000°C, 1100°C, 1200°C, 1300°C, 1400°C, Heat treatment at 1500°C for 2 hours at high temperature. After taking it out, test the bond shear strength at different heat treatment temper...

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Abstract

The invention discloses a carbon / carbon composite material binder used for bonding a carbon / carbon composite material under the high-temperature strong acid-base corrosion environment. The binder comprises main components: liquid phenolic resin and short carbon fiber, wherein the mass ratio of the liquid phenolic resin to the short carbon fiber is (100:10)-(100:50); the viscosity of the liquid phenolic resin is 0.5-2.5Pa.s, and the solid content of the liquid phenolic resin is 60-80%; the diameter of the short carbon fiber is 5-8mu m, and the length of the short carbon fiber is 100-500mu m. The invention also discloses a carbon / carbon composite material bonding method and a carbon / carbon composite material member. Compared with the prior art, the carbon / carbon composite material binder has more excellent high-temperature anti-corrosion characteristic, and higher bonding strength.

Description

technical field [0001] The invention relates to a binder and its application, in particular to a binder used for bonding carbon / carbon composite materials in a high-temperature strong acid-base corrosion environment. Background technique [0002] In petroleum, chemical, pharmaceutical, light industry and other industries, a large number of equipment (such as: pumps, pipelines, storage tanks, heat exchange equipment, etc.) Reduced service life and increased maintenance costs have a serious impact on long-term safe and reliable production. Therefore, there is an urgent need for equipment and materials with good corrosion resistance to solve the corrosion, Aging, energy consumption and many other issues. The currently commonly used metal materials limit their application in the above-mentioned equipment due to their poor corrosion resistance and high maintenance costs. Carbon / carbon composites can overcome the above problems. The entire system of carbon / carbon composite mat...

Claims

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Application Information

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IPC IPC(8): C09J161/06C09J11/04B32B37/12B32B37/10B32B37/06B32B9/04B32B7/12
Inventor 张东生夏汇浩周兴泰杨新梅宋金亮
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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