ACR-401, as a PVC processing aid, has core differences in functional positioning, molecular structure, and application scenarios. The specific comparison is as follows:
1. Differences in functional positioning
ACR-401: Designed specifically for melt reinforcement, it forms physical cross-linking points through a core-shell structure (hard core/soft shell), increasing melt strength by 300%, especially suitable for foam products (such as foam boards).
ACR-201: Focusing on plasticization promotion, reducing PVC melting time by 40-60 seconds, suitable for basic processing scenarios such as hard pipes and profiles.
ACR-530: Balancing lubrication and plasticization, grafting stearic acid groups can reduce torque by 15-20% and solve the problem of mold head precipitation.
2. Molecular structural characteristics
ACR-401: Adopting a core-shell structure of methyl methacrylate (MMA) and acrylic ester copolymer, with a hard core providing cross-linking points and a soft shell enhancing melt elasticity.
MBS additives: with styrene butadiene as the core and methyl methacrylate as the shell, focusing on transparency and impact resistance, but with poor weather resistance.
CPE type additives: Chlorinated polyethylene structure, which enhances toughness through plasticizing, but can easily reduce melt strength.
3. Differences in technical parameters
Intrinsic viscosity: ACR-401 is 2.0-5.0, higher than ACR-201 (2.0-3.0), reflecting its high molecular weight characteristics.
Addition amount: ACR-401 in foam products requires 1.5-3phr, while universal ACR-201 only requires 0.5-2phr.
Post time: Oct-28-2025
