(Acryllic Processing Aids from Novista Group)
Name of Product: Acrylic Processing aids
Related names: PVC Processing Aid, High Molecular Weight Processing Aid, Lubricant Processing Aid, Transparent Processing Aid. Main components: Methacrylates, Acrylates, etc. Properties: This product is white powder, viscosity 0.2-13.5, 40 mesh screening rate >99.0, apparent density 0.35-0.55, volatile matter <1.5 Features: 1.It has good compatibility with PVC, good dispersibility, and is entangled with PVC molecular chain to promote PVC melt plasticization, effectively reduce the melt processing temperature of PVC, and improve the weather resistance of products on the basis of small energy saving; 2.It can change the melt rheological behavior of PVC material, improve the fluidity of PVC material, so that it is easier to form and extrude, ensuring the stability of long-term processing and molding; 3.It can improve the melt strength of PVC materials, avoid melt fracture, can solve surface problems such as shark skin, improve the intrinsic quality and surface gloss of the product; 4.It can effectively prevent pressure fluctuations and flow flaws caused by extrusion during extrusion and injection molding, and effectively avoid surface problems such as ripples and zebra crossings; 5.It can improve the surface gloss of the product. Due to uniform plasticization, at the same time it can help improve the tensile properties, impact strength, elongation at break and other mechanical properties of the product; 6.It can significantly reduce the deposition of various additives on PVC products such as stabilizers, pigments, calcium powder and other products on the surface of the product. 7. The foaming regulator can effectively adjust the cell density and size, and can greatly increase the melt strength of the PVC material, thereby effectively wrap the foaming gas, form a uniform honeycomb structure, prevent gas from escaping, and reduce the density of the product. 8. Good metal stripping property, because it is a polymer material, it does not cause problems such as precipitation.
Classification: --According to the viscosity, it can be divided into: low viscosity, medium viscosity, high viscosity.
Low viscosity is 0.2-4.0, general used for transparent film, sheet, etc.;
medium viscosity is from 4.0 to 11.0, generally used for profiles, pipes, fittings Etc.;
high viscosity is generally 11.0-13.5, generally used for foam board, foam wood and so on.
--According to different functions, it can be divided into:
ordinary processing aids (such as ACR-401, 175, 20, 801, etc.) and foaming regulators (such as 100, 200, 530 etc.);
As for the acrylate processing aids with a viscosity higher than 10.0 or even higher than 11.0, the reference dosage of 4.0-12.0 PHR or more. Common processing aids include foaming regulators, Lubricating Processing Aid, general processing aids, and the reference dosage is 0.5-2.5 PHR.
Others:
Interaction: It can be used together with stabilizers, internal and external lubricants, fillers, pigments, etc., with better synergistic effect and no adverse reactions. Characteristic: The performance of the products when using by advice is significantly improved. Excessive use: The effect is not significantly improved, and even the melt strength is too large, the processing fluidity is deteriorated, the product becomes yellow, etc. Validity: one year ( It can be used longer than validity, but some performance is slightly lower) Specification: 25Kg/bag Storage: Store in a place that is ventilated, dry, and away from fire. Precautions: 1.The cheaper you buy, the worse it effects. 2.Acylic processing aids can not be replaced. 3.It can not simply judge the quality of ACR by fuming or not.
