PVC Processing Aid is an additive used to improve the processing performance of polyvinyl chloride (PVC). Its main function is to promote PVC melting, increase melt strength, improve surface quality, and reduce processing defects. Due to poor thermal stability and high melt viscosity, PVC is prone to problems such as melt fracture and surface roughness during processing. The addition of processing aids can significantly optimize its processing performance.
PVC processing aid can promote melting, increase friction between PVC particles, accelerate melting speed, and make plasticization more uniform; Improve melt strength, prevent melt fracture, reduce extrusion swelling, and enhance processing stability; Improve surface smoothness, reduce surface defects such as flow marks and shark skin, and enhance the appearance quality of products; Enhance thermal stability, some processing aids can assist with thermal stabilizers to reduce PVC degradation; Optimize the processing window to maintain good processability of PVC over a wider temperature range.
PVC processing aid is mainly divided into acrylic processing aid and San processing aid. Acrylic processing aid, such as polymethyl methacrylate (PMMA) based processing aids, have high melt strength, good surface finish, and are suitable for both hard and soft PVC. Mainly used in profiles, pipes, sheets, and transparent products. SAN processing aid, with lower cost but slightly inferior performance to ACR, is mainly suitable for general PVC products such as cables and films.
|
Features |
ACRYLIC processing aid |
SAN processing aid |
|
Main components |
Acrylic ester copolymer |
Styrene Acrylonitrile copolymer |
|
Melting promotion effect |
(Extremely strong) |
(Medium |
|
Melt strength |
High (suitable for complex extrusion) |
Low (suitable for simple molding) |
|
Transparency |
Excellent (can be used for transparent products) |
Fair (may slightly yellow) |
|
Cost |
High |
Low |
|
Typical applications |
profiles, transparent sheets, medical pipes |
sheets, cable sheaths, flooring |
The product is mainly used in industries such as PVC pipes, PVC profiles (doors and windows), PVC films, PVC transparent sheets, wires and cables.
PVC processing aids are crucial in PVC processing, especially for hard PVC products such as pipes and profiles. ACR processing aid has become the mainstream choice due to its excellent melt strength and surface finish, while SAN processing aid is suitable for cost sensitive applications. In the future, with the advancement of PVC processing technology, high performance, environmentally friendly, and multifunctional processing aids will become a development trend.


Price:
Price 2000.0 USD ($) / Ton
Minimum Order Quantity : 1 Ton
Properties : High density oxidized polyethylene wax is a specialized lubricant processing aid suitable for PVC skin foaming and free foaming boards. It is modified by oxidation of highdensity polyethylene raw materials, and its molecules have polar functional groups. It has dual properties of internal lubrication and hightemperature external lubrication, perfectly matching the production system of high calcium powder filling and highspeed extrusion molding of foam boards. Unlike ordinary lowdensity oxidized wax, it has a higher melting point and stronger melt stability.
Physical Form : Powder
Shelf Life : 2 Years
HS Code : 390490
Price 1820.0 USD ($) / Ton
Minimum Order Quantity : 1 Ton
Properties : SAN processing aid is a styreneacrylonitrile copolymer based additive specially used for rigid PVC processing. It appears as white flowing powder and features good compatibility with PVC resin. This kind of processing aid can effectively promote plasticization of PVC melt, reduce melt viscosity and improve fluidity during extrusion and injection molding, while enhancing melt strength and drawing resistance to avoid melt fracture and sagging problems in production. It also improves the surface smoothness and gloss of finished products, reduces flow marks and shrinkage marks, and endows products with better rigidity and dimensional stability. With moderate cost and excellent comprehensive performance, SAN processing aid can partially replace ACR processing aids; it is widely applied in PVC pipes, profiles, plates, WPC woodplastic materials and highfilled PVC formulations, with a usual addition dosage of 1.0 3.0 phr in standard PVC formulas.
Physical Form : Powder
Shelf Life : 2 Years
HS Code : 390690
Price 2500.0 USD ($) / Ton
Minimum Order Quantity : 1 Ton
Properties : WPC foaming regulator is the "skeleton additive" for wood plastic foaming: without it, high filling WPC is difficult to stabilize foaming; Make good use of it to improve quality, cost, and efficiency
Physical Form : Powder
Shelf Life : 2 Years
HS Code : 390690
Price 2450.0 USD ($) / Ton
Minimum Order Quantity : 1 Ton
Properties : ACR processing aids for PVC pipes are critical additives characterized by a low dosage yet significant impact. By accelerating plasticization, enhancing melt strength, improving surface finish, and stabilizing production processes, they serve as an indispensable material for achieving efficient, highquality PVC pipe extrusion.
Physical Form : Powder
Shelf Life : 2 Years
HS Code : 390690