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Graphite adhesive and preparation method thereof

A technology of adhesives and graphite, applied in the direction of adhesives, adhesive types, asphalt material adhesives, etc., can solve problems such as unsatisfactory bonding stability, reduce repeated processing, expand the bonding surface, and reduce waste Effect

Active Publication Date: 2014-08-06
CHENGDU RONGGUANG CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no special graphite adhesive at present, so ordinary adhesives can only be used for bonding. The bonding stability is not ideal and needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Prepare the graphite binder as follows:

[0025] (1) Raw materials: asphalt: softening point ≤ 90°C, graphite powder: particle size ≤ 0.075mm, purity ≥ 65.0%, petroleum coke powder: particle size ≤ 0.075mm, purity ≥ 80.0%, epoxy resin 634, industrial stearic acid 1801 , sodium bicarbonate, analytically pure grade oleic acid;

[0026] (2) Asphalt melting: use 105 kg of medium-temperature asphalt, the melting time is 330 minutes, and the melting temperature is ≥75°C;

[0027] (3) Kneading for the first time: add 2.85 kilograms of epoxy resin 634 and 1.65 kilograms of industrial stearic acid and knead, and the kneading time is 30 minutes;

[0028] (4) Kneading for the second time: add 33 kilograms of graphite powder and petroleum coke powder and knead, and the kneading time is 40 minutes;

[0029] (5) Out of the pot: the temperature of the out of the pot is 90±5°C, after the out of the pot is cooled, pack it into bags for use;

[0030] (6) crushing: crushing the mixture...

Embodiment 2

[0036] Prepare the graphite binder as follows:

[0037] (1) Raw materials: asphalt: softening point ≤ 90°C, graphite powder: particle size ≤ 0.075mm, purity ≥ 65.0%, petroleum coke powder: particle size ≤ 0.075mm, purity ≥ 80.0%, epoxy resin 634, industrial stearic acid 1801 , sodium bicarbonate, analytically pure grade oleic acid;

[0038] (2) Asphalt melting: use 100 kg of medium-temperature asphalt, the melting time is 300 minutes, and the melting temperature is ≥70°C;

[0039] (3) Kneading for the first time: add 2 kilograms of epoxy resin 634 and 1.5 kilograms of industrial stearic acid and knead, and the kneading time is 25 minutes;

[0040] (4) Kneading for the second time: add 30 kilograms of graphite powder and petroleum coke powder and knead, and the kneading time is 35 minutes;

[0041] (5) Out of the pot: the temperature of the out of the pot is 90±5°C, after the out of the pot is cooled, pack it into bags for use;

[0042] (6) crushing: crushing the mixture obt...

Embodiment 3

[0046] Prepare the graphite binder as follows:

[0047] (1) Raw materials: asphalt: softening point ≤ 90°C, graphite powder: particle size ≤ 0.075mm, purity ≥ 65.0%, petroleum coke powder: particle size ≤ 0.075mm, purity ≥ 80.0%, epoxy resin 634, industrial stearic acid 1801 , sodium bicarbonate, analytically pure grade oleic acid;

[0048] (2) Asphalt melting: use 110 kg of medium-temperature asphalt, the melting time is 350 minutes, and the melting temperature is ≥72°C;

[0049] (3) Kneading for the first time: add 3.2 kilograms of epoxy resin 634 and 1.8 kilograms of industrial stearic acid and knead, and the kneading time is 35 minutes;

[0050] (4) Kneading for the second time: add 35 kilograms of graphite powder and petroleum coke powder and knead, and the kneading time is 5 minutes;

[0051] (5) Out of the pot: the temperature of the out of the pot is 90±5°C, after the out of the pot is cooled, pack it into bags for use;

[0052] (6) crushing: crushing the mixture ob...

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Abstract

The invention discloses a graphite adhesive. The graphite adhesive consists of the following raw materials: pitch, graphite powder, petroleum coke powder, resin, stearic acid, a foaming agent and oleic acid. The invention also discloses a preparation method of the graphite adhesive. The method comprises the following steps: melting pitch; performing first mixing-kneading; adding resin and stearic acid for mixing-kneading; performing second mixing-kneading; adding graphite powder and petroleum coke powder for mixing-kneading; discharging from a kettle at the discharging temperature of 90+ / -5 DEG C, cooling, and bagging for later use; breaking, i.e., breaking mixed raw materials; stirring, i.e., adding the foaming agent and the oleic acid and stirring the mixture, thereby obtaining the graphite adhesive; and if needing premolding, placing the prepared graphite adhesive into a mold for premolding. The graphite adhesive has the most outstanding characteristics that the graphite adhesive can be foamed within the temperature range of 100-200 DEG C to enlarge the adhesive surface, thereby firmly adhering graphite pieces effectively and splicing small-sized graphite pieces or simple-structure graphite pieces into a large-sized graphite piece or a complicated-structure graphite piece; the graphite adhesive can also be used for adhering graphite electrodes.

Description

technical field [0001] The invention relates to an adhesive, in particular to a graphite adhesive used for bonding between graphite products and a preparation method. Background technique [0002] Graphite is an allotrope of elemental carbon. The periphery of each carbon atom is connected with three other carbon atoms (multiple hexagons arranged in a honeycomb pattern) to form a covalent molecule. Graphite is an electrical conductor because each carbon atom emits an electron and those electrons are free to move. Graphite is one of the softest minerals, and one of the main uses of graphite is in the production of refractory materials, including refractory bricks, crucibles, continuous casting powders, casting cores, casting molds, detergents and high temperature resistant materials. [0003] Due to the wide range of uses of graphite, larger and more complex graphite products are generally composed of multiple smaller and simpler graphite products. Especially graphite specia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J11/04C09J11/08C09J11/06
Inventor 贾斌
Owner CHENGDU RONGGUANG CARBON
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