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Novel daub for graphite bonding

A technology of cement and graphite, which is applied in the field of cement for new graphite bonding, and can solve problems such as affecting the bonding strength and bubbles in the cement

Inactive Publication Date: 2012-12-05
NANTONG SANXIN CARBON GRAPHITE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the resin contains a variety of volatile components (such as moisture, free phenol, free aldehyde, etc.), these volatile components will gradually be emitted during the curing and heat treatment process, resulting in bubbles inside the cement and affecting the bonding strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A kind of cement for novel graphite bonding, described cement comprises the component of following mass percent: 60% water glass, 20% curing agent, 20% graphite powder, the mass percentage content of silicon dioxide in described water glass 30%.

[0012] The curing agent contains 4% sodium fluorosilicate in mass percentage.

[0013] The particle size of the graphite powder is equal to 100 mesh.

Embodiment 2

[0015] A kind of cement for novel graphite bonding, described cement comprises the component of following mass percent: 70% water glass, 15% curing agent, 15% graphite powder, the mass percentage content of silicon dioxide in described water glass 50%, the curing agent contains 6% sodium fluorosilicate by mass, and the particle size of the graphite powder is 120 mesh.

Embodiment 3

[0017] A kind of cement for novel graphite bonding, described cement comprises the component of following mass percent: 80% water glass, 10% curing agent, 10% graphite powder, the mass percentage content of silicon dioxide in described water glass 60%, the curing agent contains 8% sodium fluorosilicate by mass, and the particle size of the graphite powder is 130 mesh.

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Abstract

The invention discloses a novel daub for graphite bonding, and belongs to the field of graphite equipment bonding materials. The daub comprises the following components, by mass, 60-80% of water glass, 10-20% of a curing agent, and 10-20% of graphite powder. According to the daub for graphite bonding in the present invention, volatile components are less, and the water glass has low viscosity so as to gradually eliminate produced volatile component bubbles, such that no bubble exists inside the daub after curing, and the cured section is smooth; and the daub can resist a temperature of 400 DEG C while a heat temperature requires only 130 DEG C.

Description

technical field [0001] The invention relates to a bonding filler for graphite equipment, in particular to a novel cement for graphite bonding. Background technique [0002] Traditional cement is generally composed of resin (phenolic resin, furan resin, etc.), graphite powder, and curing agent. The temperature resistance is generally at most 180°C (the specific temperature resistance depends on the heat treatment process, the higher the heat treatment temperature, the better the temperature resistance) . Since the resin contains a variety of volatile components (such as moisture, free phenol, free aldehyde, etc.), these volatile components will gradually be released during curing and heat treatment, resulting in bubbles inside the cement and affecting the bonding strength. This kind of cement has air bubbles in the cross section after curing. Contents of the invention [0003] Purpose of the invention: In order to solve the deficiencies of the prior art, the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26
Inventor 唐正勇黄晓东陆艺曹蓉蓉
Owner NANTONG SANXIN CARBON GRAPHITE EQUIP
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