High chlorinated polyethylene (HCPE) and chlorinated rubber (CR) produced by Bontecn Group China are two widely used chlorinated polymers in the fields of anti-corrosion coatings and adhesives, but they have significant differences in chemical structure, performance characteristics, and applicable scenarios
1. Chemical structure and environmental friendliness
HCPE: Prepared by chlorination modification of polyethylene, with random distribution of chlorine atoms and a chlorine content of usually ≥ 65%. Produced by aqueous suspension method, it has no solvent pollution and meets environmental protection requirements.
CR: It is made by chlorination of natural rubber or synthetic rubber, with a chlorine content of about 60-65%. Traditional solvent production may result in residual harmful substances and poor environmental protection.
2. Performance comparison
Weather resistance: HCPE has superior ozone and ultraviolet resistance, making it suitable for long-term outdoor exposure environments such as bridges and ships; CR is prone to degradation at high temperatures and has weak weather resistance.
Chemical resistance: Both are acid and alkali resistant, but HCPE has a stronger tolerance to strong oxidants (such as concentrated sulfuric acid), with no blistering or shedding after 30 days of testing.
3. Differences in application fields
HCPE：
Heavy duty anti-corrosion coating (chemical equipment, oilfield pipelines)
Flame retardant materials (fireproof coatings, cable sheaths)
High end adhesive (for bonding with PVC and metal)
CR：
Traditional anti-corrosion coatings (for ships and containers)
Ink and printing field
4. Market and Cost
HCPE: Due to the higher cost of environmentally friendly processes but better overall performance, it is gradually replacing CR.
CR: The price is lower, but due to environmental regulations, the scope of application is limited.
5. Supporting use
Both are compatible with other resins such as epoxy resin and acrylic acid, but HCPE is more suitable for composite coating systems that require high adhesion or weather resistance.
Post time: Sep-11-2025
