TIME：2025-06-05 hits：97
On the stage of modern industry, chlorinated polyethylene (CPE) is like a highly skilled magician, endowing ordinary plastics with astonishing performance transformations through exquisite molecular modifications. This elastomer material made from polyethylene through chlorination reaction is exerting its industrial magic in multiple fields.
In the construction industry, the weather resistance magic of CPE is truly astonishing. When ordinary PVC doors and Windows become brittle, hard and prone to cracking in severe cold, modified profiles with 15% to 30% CPE added can remain flexible in the extremely cold of -40℃. This is attributed to the random distribution of chlorine atoms on the polyethylene molecular chain, which disrupts the original crystalline structure, just like putting on an invisible thermal coat for the material. At present, more than 90% of plastic-steel doors and Windows in China have adopted this modified technology.
The cable insulation layer is a classic stage for CPE to showcase its flame-retardant magic. Traditional polyethylene melts when exposed to fire, while CPE with a chlorine content of 35% will release hydrogen chloride gas in the flame, diluting the concentration of combustibles and simultaneously forming a carbonized protective layer. A certain brand of flame-retardant cable has successfully passed the British BS6387 standard test by increasing its oxygen index from 17% to 28% by adding 20%CPE.
The most wonderful magic tricks occur in the field of auto parts. The TPV material obtained by blending CPE with polypropylene through dynamic vulcanization technology combines the elasticity of rubber with the processability of plastic. After the sealing strips of a certain model adopted this material, the aging resistance life was extended from 5 years to 10 years, and the weight was reduced by 30%. Behind this is the "ionic cross-linking" effect produced by the chlorine atoms on the CPE molecular chain and other components, which is like weaving an invisible spring net within the material.
From construction to transportation, from daily necessities to special equipment, CPE is continuously demonstrating the performance miracles of polymer materials with over thirty different grades of chlorine content. This modification technology, which was born in the 1960s, is still writing new industrial legends to this day.
Shandong AXA Chem Co.,Ltd
June 5, 2025
