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Neoprene adhesive preparation method

A neoprene and adhesive technology, applied in the direction of chloroprene adhesives, adhesives, adhesive types, etc., can solve the problems of not being able to pass through the gear pump, difficulty in normal operation of the device, shortening the dissolution time, etc., to achieve Not easy to stratify, improve efficiency, good dissolution effect

Inactive Publication Date: 2009-02-04
HUNAN SHENLI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that the neoprene film is still a block at the beginning of its dissolution and cannot pass through the gear pump, making it difficult for the device to operate normally
[0004] 200710035031.0 introduces the use of double-machine dissolving kettles to dissolve neoprene films, which shortens the dissolving time, reduces the rubber mixing and cutting processes, saves energy, and improves efficiency, but it also needs to prepare a pre-reaction solution in advance

Method used

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  • Neoprene adhesive preparation method

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Effect test

Embodiment 1

[0014] First, 20 parts of toluene, 25 parts of ethyl ester, 25 parts of cycloethane, and 12 parts of 120# gasoline were pumped into the double-machine dissolving tank in sequence, the temperature was raised to 30°C, and the mixer was started at a speed of 60 rpm. Then, put 14 parts of neoprene film, 4 parts of phenolic resin, 0.4 part of light magnesium oxide, 0.03 part of catalyst triethanolamine, and 2640.2 parts of additives from the manhole of the dual-machine dissolution kettle. Turn on the high-speed shear disperser in the dissolution kettle, adjust the rotating speed to 1400 rpm, and high-speed shear dissolves neoprene film, phenolic resin, light magnesium oxide and other materials. The temperature of the material in the dissolution kettle is controlled to be 40° C. by heating or cooling the water in the jacket of the dissolution kettle, and the product of the present invention is obtained by filtering and discharging after 8 hours of dispersion operation.

Embodiment 2

[0016] Pump 22 parts of toluene, 25 parts of ethyl ester, 20 parts of cycloethane, and 12 parts of 120# gasoline into the double-machine dissolving tank in sequence, raise the temperature to 40°C, and start the mixer at a speed of 80 rpm. Then drop 15 parts of neoprene film, 4 parts of phenolic resin, 0.4 part of light magnesium oxide, 0.03 part of catalyst triethanolamine, and 0.15 parts of auxiliary agent 246 from the manhole of the double-machine dissolution kettle. Speed ​​up to 1100 rpm, use the water in the jacket of the dissolution kettle to heat or cool the temperature of the material in the dissolution kettle to control the temperature of 45 ° C, disperse and run for 5 hours and then filter out the material to obtain the product of the present invention.

Embodiment 3

[0018] Pump 24 parts of toluene, 25 parts of ethyl ester, 20 parts of cycloethane, and 10 parts of 120# gasoline into the dual-machine dissolving kettle in sequence, raise the temperature to 50°C, start the mixer at a speed of 100 rpm, and then dissolve the Put into the manhole of the kettle, 16 parts of neoprene film, 5 parts of phenolic resin, 0.5 part of light magnesium oxide, 0.04 part of catalyst triethanolamine, 0.25 part of auxiliary agent 264, open the high-speed shear disperser in the dissolution kettle and adjust the speed to 1250 RPM, use the water in the jacket of the dissolution kettle to heat or cool to control the temperature of the material in the dissolution kettle to 50°C, disperse and run for 6.5 hours and then filter out the material.

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Abstract

The present invention relates to a method for preparing chloroprene rubber adhesive. The method is characterized in that chloroprene rubber, phenolic resin, light magnesium oxide, catalyst, assistant and component solvent are added into a double-unit dissolving kettle and the chloroprene rubber adhesive is prepared by the processes of dissolution, high-speed cutting and dispersing refinement. The method not only simplifies the process flow, reduces labor intensity and saves energy but also increases adhering strength and production efficiency. The product is characterized by high adhering strength, good brushing property, storage stability, uneasy stratification, etc.

Description

Technical field: [0001] The invention relates to a preparation method of a neoprene adhesive, in particular to a preparation method of a neoprene adhesive which is dissolved, sheared and dispersed in a double-machine dissolving kettle. Background technique [0002] Neoprene adhesive has the characteristics of being irreplaceable by other adhesives due to its strong initial adhesion, high bonding strength, good flexibility, shock resistance and vibration resistance, and low price, and its use is becoming more and more extensive. The traditional preparation method of neoprene is to use a rubber mixer to masticate and mix the film to cut the molecular chain and destroy the gel in the polymer, thereby reducing the viscosity of the solution. Cut the mixed film into strips, dissolve it in a solvent in a closed container with a stirrer, and then add pre-reaction and mix. The method has large manufacturing cost and equipment investment, high energy consumption, high labor intensity...

Claims

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Application Information

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IPC IPC(8): C09J111/00
Inventor 袁素珍颜珍琼李冬月
Owner HUNAN SHENLI IND
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