Chlorinated polyethylene with high maximum elongation, and preparation process and application thereof

A technology of chlorinated polyethylene and elongation at break, which is applied in the field of weather-resistant high-elastic rubber and its preparation, can solve problems such as poor impact resistance, achieve high elongation at break, improve impact resistance and weather resistance , cheap effect

Active Publication Date: 2006-09-06
SHANDONG RIKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to provide a kind of chlorinated polyethylene elastomer with high elongation at break and its preparation method and application as polyvinyl chloride resin impact modifier, and this chlorinated polyethylene has good powder Fluidity, can effectively improve the impact resistance of polyvinyl chloride resin, and solve the problem of poor impact resistance when using traditional CPE for polyvinyl chloride resin modification

Method used

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  • Chlorinated polyethylene with high maximum elongation, and preparation process and application thereof

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Experimental program
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Embodiment 1

[0028]Example 1 Put 600 parts by weight of water, 65 parts by weight of polyethylene, 0.1 part by weight of polyoxyethylene ether and 0.2 parts by weight of a copolymer of methacrylic acid and methyl methacrylate into the reactor, and start stirring Add 0.15 parts by weight of benzoyl peroxide and raise the temperature to 75°C at the same time. After the polyethylene is uniformly dispersed in water, start to pass in 20 parts by weight of chlorine gas for chlorination reaction, and gradually heat up to 110°C, and then pass in 15 The chlorine gas in parts by weight is heated up to 130°C at the same time, and the temperature is raised from 130°C to 135°C to continue the reaction. During the heating process, the remaining 35 parts by weight of chlorine gas are introduced. After the reaction is complete, it is neutralized, washed with water, and dried in a fluidized bed to obtain 100 parts by weight of chlorinated polyethylene, then the above-mentioned 100 parts by weight of chlorin...

Embodiment 2-5

[0040] Embodiment 2-5 Adopt the method identical with embodiment 1 to prepare chlorinated polyethylene, but wherein 75 ℃ to 110 ℃, 110 ℃ to 130 ℃ and 130 ℃ to 135 ℃ pass the amount of chlorine (chlorine flow) The percentage by weight of the total amount of chlorine is different. The process for preparing the modified polyvinyl chloride resin mixture is the same as in Example 1. The experimental data are shown in Table 1.

Embodiment 6

[0047] Synthesis of embodiment 6 chlorinated polyethylene

[0048] The water of 700 parts by weight, the polyethylene of 60 parts by weight and the polyoxyethylene ether of 0.15 parts by weight and the polyvinylpyrrolidone of 0.2 parts by weight are put into the reactor, and the cumene hydroperoxide of 0.35 parts by weight is added while stirring Raise the temperature to 75°C, when the polyethylene is evenly dispersed in water, start to feed 20 parts by weight of chlorine gas while raising the temperature to 110°C, then feed 15 parts by weight of chlorine gas while raising the temperature to 130-135°C, and then feed the remaining 45 parts by weight 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,00 Calcium is added to a high-speed mixer and mixed at a high speed to obtain chlorinated polyethylene with good fluidity and an elongation at b...

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Abstract

A chlorinated polyethylene with high pull-apart elongation percentage and the process for preparing and its application belong to a weatherable snappy rubber and its preparative technological sphere. Obtained by chlorinated polyethylene, it is characterized in that, first, the said chlorinated polyethylene is partially chlorinated below its meltin point, afterwards, it performs chlorination reaction when it is heated up to above its meltin point, and as a result, the chlorinated polyethylene elastomer is obtained with more than 800 % of pull-apart elongation percentage, which can be as polychloroethylene impact modifier. The said chlorinated polyethylene is of high pull-apart elongation percentage and good impact property, can be used in modifying the polychloroethylene resin, and can have impact property function even in a smaller dosage. The dosage ratio is about 2-25 % of polychloroethylene resin weight and its method for using is the same as the present modifier. The dosage of chlorinated polyethylene is small, which eliminates the precipitation problem of polychloroethylene because of excessive chlorinated polyethylene and improves the mechaniclal property and weatherable property of polychloroethylene resin at the same time.

Description

technical field [0001] The invention belongs to the technical field of weather-resistant high-elastic rubber and its preparation, and in particular relates to a chlorinated polyethylene with high elongation at break applied to the impact modification of polyvinyl chloride resin, as well as its preparation method and application. Background technique [0002] Polyvinyl chloride (PVC) is a general-purpose thermoplastic with excellent performance, and it is one of the plastic varieties with the largest output in my country. The processing and forming performance of polyvinyl chloride is very poor, and various processing aids must be added to improve its processing performance; the impact strength of polyvinyl chloride products after processing is poor, and people have invented many methods to improve the performance of polyvinyl chloride products. impact strength. One of the methods is to add butadiene-styrene-methyl methacrylate terpolymer, that is, MBS resin to improve the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/02C08F8/22
Inventor 赵东日
Owner SHANDONG RIKE CHEM
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