Chlorinated Polyethylene

Product Description

Product Overview

CPE 135A is a high molecular weight elastomer obtained by chlorination modification of polyethylene, with a chlorine content typically of 35 1%, and belongs to the category of CPE products with moderate chlorine content. As one of the most widely used impact modifiers in the field of PVC modification, it has excellent toughening effect, weather resistance, and cost-effectiveness, especially suitable for hard PVC door and window profiles, pipes, and other building materials.

Key characteristics

• Chlorine content: 35 + 1% (optimal balance point between processability and toughness)
• Glass transition temperature (Tg): about -15 ^oC (endows low temperature impact resistance)
• Particle morphology: White or slightly yellow free flowing powder
• Apparent density: 0.50-0.60g/cm3
• Thermal decomposition temperature: > 170 DegC (matching with PVC processing temperature)

Core functional advantages

Excellent impact resistance modification

• Can increase the notch impact strength of rigid PVC by 8-15 times
• Maintain good toughness even in a low temperature environment of -20 DegC

Outstanding weather resistance performance

• No double bond structure in the molecule, significantly better UV aging resistance than MBS/ABS
• Outdoor service life can reach more than 10 years (accelerated aging test for door and window profiles)

Excellent processing performance

• Good compatibility with PVC, reducing plasticizing time by 15-20%
• High melt strength, suitable for complex cross-section extrusion

Outstanding cost-effectiveness

• The cost is only 60-70% of ACR type modifiers
• Can partially replace expensive impact modifiers

Typical application areas

Building materials field (main applications)

• PVC door and window profiles (dosage 8-12 phr)
• Building drainage/water supply pipe (6-10phr)
• Plastic steel tile/anti-corrosion board (10-15 phr)

Other areas

• Wire and cable sheath (used in conjunction with PE)
• Rubber product modification (replacing some CR rubber)
• Waterproof membrane (as a polymer modifier)

Comparative advantages

This product optimizes the chlorination process and molecular weight distribution, while maintaining the cost-effectiveness advantage of traditional CPE, significantly improving impact resistance efficiency and processing performance. It is currently one of the most cost-effective modified solutions in the field of hard PVC building materials.