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Manufacturing process of chlorinated rubber

A manufacturing process and technology of chlorinated rubber, applied in the field of rubber materials, can solve the problems of a large number of chlorinated organic solvents, endanger human health, destroy the atmospheric ozone layer, etc., and achieve the effect of unique performance and good spraying performance

Inactive Publication Date: 2015-02-11
ANHUI TONGFENG RUBBER & PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is relatively mature, a large amount of chlorinated organic solvent is required to produce chlorinated rubber by this method, and it is very difficult to separate and recover the solvent from the product. If it volatilizes into the atmosphere, it will not only endanger human health, but also destroy Atmospheric ozone layer, so it is imperative to find an alternative solution method to produce chlorinated rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of manufacture technique of chlorinated rubber, comprises the following steps,

[0021] 1) raw material preparation: add 200 parts of natural rubber, 20 parts of surfactants and 100 parts of water medium in the chlorinator, then add concentrated hydrochloric acid in the chlorinator, make the solution pH value in the chlorinator reach 4, chlorine There is a high-pressure mercury lamp outside the carburetor for irradiation. Chlorine gas is introduced at a room temperature of 23°C for 2 hours of reaction. After being irradiated by a high-pressure mercury lamp, the temperature is increased to 80°C. Chlorine gas is introduced and reacted for 4 hours. The surfactant is fatty alcohol polyoxygen Sodium Vinyl Ether Sulfate.

[0022] 2) Plasticizing plastics: inject compressed air into the reaction vessel, and the temperature of the compressed air is 60°C;

[0023] 3) Rubber material mixing: add nitrile rubber compound rubber, hydrogenated nitrile rubber sealing product c...

Embodiment 2

[0026] Embodiment 2: all the other are identical with embodiment 1, and difference is that step 1) is 220 parts of natural rubber, 30 parts of surfactants and 110 parts of water medium, it is 3h to pass into chlorine gas at the beginning, and it is 5h to pass into chlorine gas later , in step 2), the compressed air is 70°C, in step 3), 10 parts of hard black carbon and 10 parts of antimony trioxide are added in the kneading state, in step 5), the vulcanization temperature is 110°C, and the vulcanization time is 30min.

Embodiment 3

[0027] Embodiment 3: all the other are identical with embodiment 1, and difference is that step 1) is 250 parts of natural rubber, 40 parts of tensio-active agents and 120 parts of water medium, it is 3.5h to pass into chlorine gas at the beginning, and it is 3.5h to pass into chlorine gas later. 6h, in step 2), the compressed air is 75°C, in step 3), 12 parts of hard black carbon and 12 parts of antimony trioxide are added in the kneading state, in step 5), the vulcanization temperature is 120°C, and the vulcanization time is for 35min.

[0028] After the above process steps, the chlorinated rubber sample is taken out to be tested:

[0029] Test items Example 1 Example 2 Example 3 Standard Premium Maximum load(kg) 9090 9080 8980 9000 Corresponding internal pressure (Kpa) 310 300 280 275 Compressive strength (Kpa) 2500 2570 2500 2480

[0030] After adding hard black carbon and antimony trioxide, the hardness and wear resistance ...

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PUM

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Abstract

The invention discloses a manufacturing process of chlorinated rubber and relates to the technical field of rubber materials. The manufacturing process comprises the following steps: 1) preparing raw materials; 2) plasticating a rubber material; 3) mixing the rubber material; 4) molding the rubber material; and 5) vulcanizing the rubber material. The chlorinated rubber material prepared by the method disclosed by the invention has good flame retardance, capability of delaying ignition, high strength, excellent mechanical properties and good wear resistance, can be suitable for long-term friction and can prevent damages; and furthermore, an environment-friendly flame retardant is added in the mixing process, so that the flame retardance is further improved, and the preparation process is simple and easy to grasp.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a manufacturing process of chlorinated rubber. Background technique [0002] Chlorinated rubber is an important rubber derivative in industry. It is widely used in architectural anti-corrosion coatings and marine paint spraying because of its unique water-resistance and flame retardancy. Most of the industrial production of chlorinated rubber today adopts the solution method, that is, the natural rubber is dissolved in a chlorine-containing organic inert solvent, and chlorine is chlorinated in the presence of a catalyst. Although this method is relatively mature, a large amount of chlorinated organic solvent is required to produce chlorinated rubber by this method, and it is very difficult to separate and recover the solvent from the product. If it volatilizes into the atmosphere, it will not only endanger human health, but also destroy Atmospheric ozone layer, so it is...

Claims

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Application Information

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IPC IPC(8): C08L15/02C08L9/02C08L15/00C08L83/04C08K3/04C08K3/22C08K3/06C08C19/14
Inventor 项宗武
Owner ANHUI TONGFENG RUBBER & PLASTIC IND
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