The difference between foaming regulator and ACR

1. Definition and functional differences
Foam regulator: a type of ACR (acrylic copolymer) specifically designed for PVC foam materials. By increasing melt strength and achieving uniform plasticization, it ensures a dense and uniform cell structure, while improving apparent smoothness and mechanical properties.
Ordinary ACR processing aid: with a low molecular weight (20W-30W), its main function is to promote rapid plasticization of PVC and improve flowability, suitable for non foamed products (such as plastic doors and windows), but with low melt strength.
2. Molecular weight and performance characteristics
Foaming regulator: with a higher molecular weight (usually ≥ 300W), high viscosity (such as the viscosity of thick plate products can reach 13.0 or above), long molecular chain, can enhance melt entanglement, but the plasticization rate is slower.
Ordinary ACR: low molecular weight, low melting point, fast plasticization speed, good flowability, but requires high-temperature processing to compensate for insufficient melt strength.
3. Application scenarios and selection criteria
Foam regulator: Choose different models according to product requirements (such as HF-100 series for shoe soles, HF-533 for thick plates), and balance plasticizing speed and melt strength.
Ordinary ACR: Suitable for scenarios that do not require high melt strength, such as plastic door and window processing, with a focus on rapid plasticization and energy consumption control.
Key summary: The core differences between the two lie in molecular weight, viscosity, and functional focus. Foam modifiers are specialized sub products of ACR in the field of foaming. In addition to all the basic characteristics of PVC processing aids, foaming regulators have higher molecular weight than general-purpose processing aids, high melt strength, and can give products more uniform cell structure and lower density. Improve the pressure and torque of PVC melt, so as to effectively increase the cohesion and homogeneity of PVC melt, prevent the merger of bubbles, and obtain uniform foamed products.Bontecn Group China foaming regulator has the characteristics of high purity, low cost, and good stability. Welcome to consult!