Preparation method for low temperature-resistant chlorinated polyethylene rubber

A technology of chlorinated polyethylene and low-temperature resistance, which is applied in the field of preparation of chlorinated polyethylene rubber, can solve the problems of poor low-temperature resistance of chlorinated polyethylene rubber, and achieve stability, increase production costs, and increase low-temperature resistance Effect

Inactive Publication Date: 2018-11-09
北京鼎翰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art, and to provide a preparation method of low temperature resistant chlorinated polyethylene rubber, which has the advantage of low temperature resistance and solves the problem of poor low temperature resistance of chlorinated polyethylene rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of low-temperature-resistant chlorinated polyethylene rubber, the preparation method comprising the steps of:

[0033] S1, prepare the batching kettle and collect high-density polyethylene with a molecular weight of 200,000-300,000, high-density polyethylene with a molecular weight of 150,000-250,000 and sufficient chlorine for standby;

[0034] S2, add a certain amount of water to the batching kettle, start stirring, add emulsifier, dispersant and initiator, and then mix high-density polyethylene with a molecular weight of 200,000-300,000 and high-density polyethylene with a molecular weight of 150,000-250,000 according to the formulation Add it into the batching kettle, and use compressed air to press the chlorinated polyethylene material into the chlorination kettle after stirring evenly;

[0035] S3, add a certain amount of water to the phase chlorination kettle, pass hot water through the jacket until the temperature of the chlorinated polyethy...

Embodiment 2

[0041] A preparation method of low-temperature-resistant chlorinated polyethylene rubber, the preparation method comprising the steps of:

[0042] S1, prepare the batching kettle and collect high-density polyethylene with a molecular weight of 200,000-300,000, high-density polyethylene with a molecular weight of 150,000-250,000 and sufficient chlorine for standby;

[0043] S2, add a certain amount of water to the batching kettle, start stirring, add emulsifier, dispersant and initiator, and then mix high-density polyethylene with a molecular weight of 200,000-300,000 and high-density polyethylene with a molecular weight of 150,000-250,000 according to the formulation Add it into the batching kettle, and use compressed air to press the chlorinated polyethylene material into the chlorination kettle after stirring evenly;

[0044] S3, add a certain amount of water to the phase chlorination kettle, pass hot water through the jacket until the temperature of the chlorinated polyethy...

Embodiment 3

[0050] A preparation method of low-temperature-resistant chlorinated polyethylene rubber, the preparation method comprising the steps of:

[0051] S1, prepare the batching kettle and collect high-density polyethylene with a molecular weight of 200,000-300,000, high-density polyethylene with a molecular weight of 150,000-250,000 and sufficient chlorine for standby;

[0052] S2, add a certain amount of water to the batching kettle, start stirring, add emulsifier, dispersant and initiator, and then mix high-density polyethylene with a molecular weight of 200,000-300,000 and high-density polyethylene with a molecular weight of 150,000-250,000 according to the formulation Add it into the batching kettle, and use compressed air to press the chlorinated polyethylene material into the chlorination kettle after stirring evenly;

[0053] S3, add a certain amount of water to the phase chlorination kettle, pass hot water through the jacket until the temperature of the chlorinated polyethy...

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PUM

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Abstract

The invention discloses a preparation method for low temperature-resistant chlorinated polyethylene rubber, which relates to the technical field of rubber preparation. The preparation steps are listedas follows: preparing a burdening still, collecting high density polyethylene with a molecular weight of 200,000-300,000, high density polyethylene with a molecular weight of 150,000-250,000 and enough chlorine gas for later use, adding a certain amount of water into the still, starting stirring, and adding an emulsifying agent, a dispersing agent and an initiating agent. The preparation method for the low temperature-resistant chlorinated polyethylene rubber, through measuring the quantity of sodium carbonate in neutralization, effectively neutralizes the measured sodium carbonate with acidattached to the chlorinated polyethylene material to avoid unnecessary waste, and avoids excessive neutralization transformation which makes the chlorinated polyethylene material be alkaline after neutralization. Compared with the existing chlorinated polyethylene rubber, the chlorinated polyethylene rubber prepared by the invention possesses all the properties of the existing chlorinated polyethylene rubber, and has improved low-temperature resistance of the chlorinated polyethylene rubber, which greatly improves the practicability of a product.

Description

technical field [0001] The invention relates to the technical field of rubber preparation, in particular to a method for preparing low temperature resistant chlorinated polyethylene rubber. Background technique [0002] Chlorinated polyethylene structural formula: [ CH2-CHCl-CH2-CH2 ]n, chlorinated polyethylene (CPE) is a saturated polymer material, the appearance is white powder, non-toxic and tasteless, with excellent weather resistance, ozone resistance, chemical resistance Drug and aging resistance, good oil resistance, flame retardancy and coloring performance, good toughness (still flexible at -30°C), good compatibility with other polymer materials, high decomposition temperature, decomposition Produce HCL, HCL can catalyze the dechlorination reaction of CPE, chlorinated polyethylene is a polymer material made from high-density polyethylene (HDPE) through chlorination substitution reaction, according to different structures and uses, chlorinated polyethylene can be div...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/22C08F110/02C08L23/28
CPCC08F8/22C08F110/02C08L23/286C08L2205/025
Inventor 董晶龙
Owner 北京鼎翰科技有限公司
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