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Method for improving adhesion performance of nature rubber vulcanized rubber through argon gas medium low temperature plasma treatment

A low-temperature plasma, bonding performance technology, applied in the direction of surface pretreatment bonding methods, adhesives, etc., can solve the problems of shortened aging resistance life, unsuitable bonding, etc.

Inactive Publication Date: 2018-11-06
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heat-aged natural rubber behaves as an elastic body at room temperature, and its surface is inert. It is not suitable for bonding with other materials. It is usually treated with a solvent, and the aging resistance life of most vulcanized natural rubber after solvent treatment will be shortened.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Put the 1142 vulcanized rubber to be bonded into the processing box of the low-temperature plasma equipment, and evacuate until the vacuum degree is less than 6 Pa;

[0013] (2) Infuse argon gas until the vacuum degree is 35 Pa;

[0014] (3) Apply current and voltage to conduct low-temperature plasmaization of argon gas, and process fluororubber with a processing power of 120W and a processing time of 240 s;

[0015] (4) The treated 1142 vulcanizate should be bonded in the shortest possible time (no more than 4 hours);

[0016] (5) Coat JQ-1 Lekner glue on the surface of 1142 vulcanized rubber treated with low-temperature plasma, bond it with 2024 aluminum alloy plate, and vulcanize at room temperature for more than 90 minutes;

[0017] (6) The peel strength of 1142 vulcanizate and 2024 aluminum alloy plate is increased from 25 N / m to at least 305 N / m.

Embodiment 2

[0019] (1) Put the 1142 vulcanized rubber material to be bonded into the processing box of the low-temperature plasma equipment, and evacuate until the vacuum degree is less than 5 Pa;

[0020] (2) Infuse argon gas until the vacuum degree is 45 Pa;

[0021] (3) Apply current and voltage to conduct low-temperature plasmaization of argon gas, and process fluororubber with a processing power of 160W and a processing time of 200 s;

[0022] (4) The treated 1142 vulcanizate should be bonded in the shortest possible time (no more than 4 hours);

[0023] (5) Coat JQ-1 Lekner glue on the surface of 1142 vulcanized rubber treated with low temperature plasma, bond it with 2024 aluminum alloy plate, and vulcanize at room temperature for more than 100 min;

[0024] (6) The peel strength of 1142 vulcanizate and 2024 aluminum alloy plate is increased from 25 N / m to at least 320 N / m.

Embodiment 3

[0026] (1) Put the 1142 vulcanized rubber material to be bonded into the processing box of the low-temperature plasma equipment, and evacuate until the vacuum degree is less than 6 Pa;

[0027] (2) Infuse argon gas until the vacuum degree is 40 Pa;

[0028] (3) Apply current and voltage to conduct low-temperature plasmaization of argon gas, and process fluororubber with a processing power of 120W and a processing time of 180 s;

[0029] (4) The treated 1142 vulcanizate should be bonded in the shortest possible time (no more than 4 hours);

[0030] (5) Coat JQ-1 Lekner glue on the surface of 1142 vulcanized rubber treated with low temperature plasma, bond it with 2024 aluminum alloy plate, and vulcanize at room temperature for more than 105 min;

[0031] (6) The peel strength of 1142 vulcanizate and 2024 aluminum alloy plate is increased from 25 N / m to at least 310 N / m.

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Abstract

The invention discloses a method for improving the adhesion performance of vulcanized rubber through argon gas medium low temperature plasma treatment. The method comprises: (1) carrying out low-temperature plasma treatment on 1142 vulcanized rubber for 200-240 s at a treatment power of 120-160 W under a vacuum degree of (40+ / -5) Pa by using argon gas as a treatment atmosphere; and (2) adhering alayer of a 2024 aluminum alloy plate film to the surface of the 1142 vulcanized rubber by using a JQ-1 polyisocyanate adhesive within 4 h after the treatment of the 1142 vulcanized rubber, vulcanizingfor more than 90 min in a room temperature environment after the adhering, and testing peel strength according to standard. According to the present invention, with the method, the peel strength between the 1142 vulcanized rubber and the 2024 aluminum alloy plate is increased to at least 300 N / m from 25 N / m.

Description

technical field [0001] The invention relates to a method for bonding 1142 vulcanized rubber, in particular to a method for improving the surface bonding strength of 1142 vulcanized rubber after being treated with low-temperature plasma in an argon gas medium. Background technique [0002] Natural rubber is the latex exuded by the rubber tree, which is solid after coagulation and drying, and has high elasticity. Rubber is mainly composed of polyisoprene, with a molecular weight distribution between 100,000 and 1.8 million. It is a renewable natural resource with excellent comprehensive properties. And the content of cis-1,4-polyisoprene has reached more than 98%. Heat-aged natural rubber behaves as an elastic body at room temperature, and its surface is inert. It is not suitable for bonding with other materials. It is usually treated with a solvent, and the aging resistance life of most vulcanized natural rubber after solvent treatment will be shortened. The low-temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/28C09J5/02C08L7/00
CPCC08J3/28C08J2307/00C09J5/02C09J2301/504C09J2400/163C09J2407/008
Inventor 王云英孟江燕亢新梅周建萍陈芳芳
Owner NANCHANG HANGKONG UNIVERSITY
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