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Adhesive capable of being used for fluororubber binding and preparation method thereof

A fluororubber raw rubber and adhesive technology, which is applied in the field of rubber adhesives, can solve the problems of poor heat resistance, fluororubber self-adhesiveness and mutual adhesion, and brittleness, etc., to prolong the gel time, high bonding strength, and flexibility Good results

Inactive Publication Date: 2008-04-09
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The self-adhesiveness and mutual adhesion of fluororubber are poor. Regarding the problem of bonding fluororubber vulcanized rubber, some people have made several attempts: 1. Put fluororubber compound glue on the bonding part, and then heat press vulcanization, but this This bonding method has low bonding strength, and the resulting product is easily damaged at the bonding site; 2. Use acrylic adhesive for cold bonding, and the bonding site directly combines the two interfaces with the adhesive. The bonding strength of this method Relatively high, but due to the poor heat resistance of the adhesive itself, the temperature for long-term use generally cannot exceed 80°C, and fluororubber products are generally used at high temperatures, so this bonding method loses its use value; 3. Adhesive The surface to be bonded is first treated with adhesive Kemlok, and a small amount of unvulcanized glue is injected between the two interfaces, and then vulcanized at high temperature
This method improves its bonding strength to a certain extent, but Chemlok will become brittle after high temperature vulcanization, and the apron is easy to crack when it is twisted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present invention can be used for the preparation method of the adhesive of viton bonding comprising the following steps:

[0036] (1) Get the following components by mass:

[0037] Viton raw rubber 100

[0038] acid absorber 11

[0039] Filler 16

[0040] paint 5

[0041] Vulcanization system 2.5;

[0042] Wherein, the fluororubber raw rubber is FPM2603, and the acid absorbing agent is composed of 3 parts by mass of Ca(OH) 2 + 8 parts by mass of MgO, the filler is 15 parts by mass of diatomite + 1 part by mass of calcium silicate, the pigment is chrome green, and the vulcanization system is 0.5 parts by mass of BPP + 2 parts by mass of bisphenol AF. Acetone is selected as the organic solvent, and acetic acid is selected as the organic acid.

[0043] (2) Open refining:

[0044] The raw rubber is thinly passed 6 times, and then Ca(OH)2, MgO; diatomaceous earth, chrome green; calcium silicate, BPP, bisphenol AF are added in sequence. After adding the material,...

Embodiment 2

[0049] The present embodiment is with embodiment 1 except following feature:

[0050] Get the following components by mass:

[0051] Viton raw rubber 100

[0052] acid absorber 11

[0053] Filler 16

[0054] Pigment 0

[0055] Vulcanization system 2.5;

[0056] Wherein, the fluororubber raw rubber is FPM2603, and the acid absorbing agent is composed of 3 parts by mass of Ca(OH) 2 + 8 parts by mass of MgO, the filler is 1 part by mass of calcium silicate + 15 parts by mass of carbon black N990, and the vulcanization system is 0.5 parts by mass of BPP + 2 parts by mass of bisphenol AF.

Embodiment 3

[0058] The present embodiment is with embodiment 1 except following feature:

[0059] Get the following components by mass:

[0060] Viton raw rubber 100

[0061] acid absorber 10

[0062] Filler 26

[0063] paint 2

[0064] Vulcanization system 2.1;

[0065] Wherein, the fluororubber raw rubber is FPM2603, and the acid absorbing agent is composed of 4 parts by mass of Ca(OH) 2 + 6 parts by mass of MgO, the filler is 1 part by mass of calcium silicate + 25 parts by mass of barium sulfate, the pigment is chrome green, and the vulcanization system is 0.5 parts by mass of BPP + 1.6 parts by mass of bisphenol AF. The ratio of acetone to the total mass of the fluororubber raw rubber, acid absorbing agent, filler, pigment, and vulcanization system is 1.8:1, and the organic acid is oxalic acid in an amount of 1% of the mass of acetone.

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Abstract

The invention provides an adhesive used for adhesion of fluororubber and a preparation method thereof. The adhesive used for the adhesion of the fluororubber consists of the following components according to weight ratio: raw fluororubber 100, acid absorbing agent 9-12, filling 10-30, dyes 0-10, and curing system 2.1-2.8, as well as organic solvent and organic acid. The preparation method of the adhesive is that: (1) The components are prepared with a certain quantity; (2) the raw fluororubber, the acid absorbing agent, the filling, the dyes, the curing system are mixed to get rubber compounds; (3) after the organic solvent and the organic acid being added, the adhesive can be obtained with stirring evenly. The formula of the invention is reasonable with good temperature-resistant performance and strong cohesion. The product after cohesion has high adhesion strength.

Description

technical field [0001] The invention relates to the technical field of rubber adhesives, in particular to an adhesive that can be used for fluorine rubber bonding and a preparation method thereof. Background technique [0002] The self-adhesiveness and mutual adhesion of fluororubber are poor. Regarding the problem of bonding fluororubber vulcanized rubber, some people have made several attempts: 1. Put fluororubber compound glue on the bonding part, and then heat press vulcanization, but this This bonding method has low bonding strength, and the resulting product is easily damaged at the bonding site; 2. Use acrylic adhesive for cold bonding, and the bonding site directly combines the two interfaces with the adhesive. The bonding strength of this method Relatively high, but due to the poor heat resistance of the adhesive itself, the temperature for long-term use generally cannot exceed 80°C, and fluororubber products are generally used at high temperatures, so this bonding ...

Claims

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Application Information

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IPC IPC(8): C09J115/02C09J11/00
Inventor 杨文良张红烨雷志云
Owner GUANGZHOU MECHANICAL ENG RES INST
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