Include making oxidation resistant and heat-resistant coatings, linings and products, used as modifiers for PVC, ABS and other polyolefins, manufacturing incombustible and chemical resistant floor materials, artificial leather, foam plastics, films, plates, laminated materials, cables and wire coatings, etc., and improving the toughness and flame retardancy of adhesives.
Chlorinated polyethylene (CPE) is a saturated polymer material with a white powder appearance, non-toxic and odorless. It has excellent weather resistance, ozone resistance, chemical resistance, and aging resistance, as well as good oil resistance, flame retardancy, and coloring properties. Good toughness (still flexible at -30 ℃), good compatibility with other polymer materials, and high decomposition temperature. The aqueous phase method of chlorinated polyethylene is commonly used, which has low production costs and poor pollution. Another method is the suspension method, which is relatively mature and can be further developed and applied domestically. It has a fast drying speed. It is commonly used in storage tanks and steel structures to improve construction safety. Domestic models of chlorinated polyethylene (CPE) are generally identified by numbers such as 135A, 140B, 239C, etc., where the first digit 1 and 2 represent the residual crystallinity (TAC value), 1 represents the TAC value between 0-10%, 2 represents the TAC value of 10%, the second and third digits represent the chlorine content, such as 35 representing the chlorine content of 35%, and the last digit is the letter ABC, used to indicate the molecular weight of the raw material PE, with A being the largest and C being the smallest. Chlorinated polyethylene (CPE) type A material has the highest molecular weight and high melt viscosity, and its viscosity is most compatible with PVC. It has the best dispersion effect in PVC and can form an ideal network like dispersion form. Therefore, CPE type A material is generally selected as a modifier for PVC. Wire and cable (coal mine cables, wires specified in UL and VDE standards), hydraulic rubber hoses, automotive rubber hoses, tape, rubber plates, PVC profile pipe modification, magnetic materials, ABS modification, etc. Especially the development of the wire and cable industry, as well as the automotive parts manufacturing industry, has driven the consumption demand for rubber based chlorinated polyethylene. Rubber type chlorinated polyethylene is a special synthetic rubber with excellent comprehensive performance, heat and oxygen ozone aging resistance, and good flame retardancy.
Post time: Dec-26-2024
