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The Application And Development Direction Of New Materials For Chlorinated Polyethylene

Weifang Yaxing Chemical Co.,Ltd | Updated: Jul 11, 2017

The application and development direction of new materials for Chlorinated Polyethylene

Chlorinated Polyethylene are made of high density polyethylene (HDPE) by chlorination and made a chloride polymer, according to the amount of chlorine residual crystallinity, and other characteristics, can be divided into type resin Chlorinated Polyethylene (CPE) and type of Chlorinated Polyethylene rubber (CM). CPE contains a certain amount of residual crystallization in the structure, and CM has no residual crystallization.

Application and performance of Chlorinated Polyethylene series:

CPE135A: good flexibility, low temperature toughness, high strength, high filling and good impact resistance.

It can be used for hard PVC products such as door and window profiles, plastic pipes and fittings, plates and so on.

CPE135B: high toughness, high elasticity, high elongation, low temperature toughness, good oil resistance and flame retardant properties.

It is used for flame retardant cable sheath, flame retardant conveyor belt, mine cable, waterproof rolling material, etc.

CPE130A: good flexibility, excellent low temperature performance, good filling, aging resistance, chemical resistance, good processing performance;

It can be used in the production of refrigerator magnetic stripe, cold resistant cable sheath, and can be used as special rubber for making rubber products.

CPE140A: high mechanical strength, good toughness, aging resistance and good fluidity, good compatibility with PVC.

It is used for PVC rolling film, PVC waterproof rolling material, and PVC high efficiency plasticizer and flame retardant.

Chlorinated Polyethylene is a high - density polyethylene chlorinated polymer material, which is CH2 - chcl-ch2 - CH2. White particles, soluble in aromatic and halogenated hydrocarbon, are not soluble in fatty hydrocarbons. Decomposition of above 170 ℃, with excellent weather resistance, low temperature resistance and electrical properties; Ozone resistance; Chemical resistance and oil resistance; Flame retardant; It also has good processing fluidity and good compatibility with other plastics and rubber. The chlorine content is 25 ~ 45%.

Application:

As a good modifier of plastic and rubber and additives, CPE in plastic doors and Windows, PVC pipe and plate, waterproofing, anti-corrosion coatings, wire and cable, rubber hose, adhesive tape and magnetic materials, flame retardant ABS material has wide application in industrial field. Such as PVC modifier; The toughening agent and flame retardant of PP, PE, PS and ABS; The products include refrigerator magnetic tape, cold - proof cable sheath, waterproof rolling material, flame retardant conveyor belt, plastic profile, colored bicycle belt, etc.

Production methods:

The production of Chlorinated Polyethylene is divided into solvent chlorination, Chlorinated Polyethylene suspended chlorination and solid - phase chloride. Currently, the suspension chlorination method has been developed to the process of acid phase chlorination, chlorination of water phase and suspension chlorination of solution. Solid phase suspension chlorination process is divided into the solid phase chlorination process and solid phase chlorination process.

Solid phase chlorination technology has overcome the shortcoming of three processes: solution method, solvent method and solid phase mixing process. It is the best process choice for PE chloride (especially high density PE chlorination). Advantages of this process: (1) to avoid the solvent in solvent method (CCl4) pollution to the atmospheric ozone layer destruction and solvent recovery, avoid the pollution of water dilute hydrochloric acid suspension method and deal with the cost of pollution, the by-product hydrogen chloride absorbed into qualified hydrochloric acid for sale, relatively reduced the production cost. (2) the chlorine gas and PE powder are fully exposed, the reaction is uniform and the heat transfer rate is fast. (3) Chlorinated Polyethylene the process is simple, the investment is small, especially the expansion of production capacity is quite easy, the chlorination reactor increases the diameter to be able, and the ability is bigger, Chlorinated Polyethylene the advantage that invests less is apparent. (4) the process can be produced intermittently and continuously. Production enterprise: shandong Chlorinated Polyethylene plant