ACM impact modifier for PVC profile

ACM impact modifier for PVC profile Specification

Smell
Other

Usage
6~10

Taste
Other

Product Type
General chemicals

Shelf Life
2 Years

Purity
100%

Grade
ACM 91

CAS No
None

Properties
ACM is a chlorinated polyethylene acrylate graft copolymer with a core-shell structure, specifically developed as an impact modifier for rigid PVC. Using chlorinated polyethylene elastomer as the core, acrylic ester grafted shell, and good compatibility with PVC. Core features: Impact toughness: Improve the low-temperature impact resistance of PVC, reduce the low-temperature cracking and brittleness of profiles; Excellent weather resistance: molecular chain saturation, resistance to UV and thermal oxidative aging, suitable for outdoor profiles of doors and windows, better weather resistance than CPE; Processability: promote PVC gel, improve melt fluidity, and smooth profile surface; Suitable for high calcium powder filling formula.

Physical Form
Powder

Storage
Room Temperature

Shape
other

Application
Industrial

HS Code
390190

Appearance
White powder

Poisonous
NO

About ACM impact modifier for PVC profile

Application of ACM Impact Modifier in PVC Profiles

ACM impact modifier, a high-performance core-shell structured copolymer synthesized by grafting lightly chlorinated polyethylene and acrylate polymers, has become an ideal functional additive for upgrading rigid PVC profile products, effectively solving the inherent shortcomings of traditional PVC materials such as brittleness, poor low-temperature toughness and insufficient weather resistance. Different from conventional impact modifiers like CPE, ACM modifier features a unique interpenetrating network structure and saturated acrylate chain segments, which enables it to disperse uniformly in micron scale within the PVC resin matrix during extrusion and molding of PVC profiles. When the profile is subjected to external mechanical impact, the elastomeric ACM micro-particles can serve as stress concentration points, inducing tiny uniform deformation in the surrounding rigid PVC matrix, efficiently absorbing and dissipating impact energy, and inhibiting the generation and expansion of internal cracks, thereby significantly improving the impact strength and fracture toughness of PVC profiles without damaging their original rigidity, dimensional stability and tensile properties.

In practical production and application of PVC profiles such as door and window profiles, decorative profiles and exterior wall cladding profiles, ACM impact modifiers exhibit outstanding comprehensive performance advantages, especially suitable for high-fill and low-temperature service environments. It remarkably enhances the low-temperature flexibility of PVC profiles, avoiding common quality problems such as brittle fracture and edge chipping during winter construction and low-temperature use, which greatly improves the product yield and on-site applicability. Meanwhile, the saturated molecular structure of ACM endows PVC profiles with excellent UV resistance and oxidative aging resistance, effectively resisting long-term erosion of outdoor ultraviolet rays, temperature alternation and wind and rain exposure. It maintains stable mechanical strength and uniform color luster of profiles for a long time, significantly extending the service life of outdoor PVC profile products compared with traditional modified systems.

In terms of processing performance, ACM impact modifier has excellent rheological compatibility with PVC resin. It can promote uniform gelation of PVC melt, reduce melt shear torque and processing current, stabilize extrusion processing temperature and processing window, and improve the smoothness and surface finish of profile products. In addition, it has good adaptability to various processing aids and high-filler formula systems, which can effectively reduce processing defects, improve production efficiency, and balance the mechanical properties, weather resistance and processability of PVC profiles. For high-end PVC profile products pursuing long-term durability, stable molding quality and extreme environmental adaptability, ACM impact modifier has become a core modified additive that replaces traditional products and realizes high-performance upgrading of PVC profile materials.

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