Most PVC product manufacturers use powdered nitrile rubber to enhance various properties of their products, thereby meeting higher market demands. In which fields can powdered nitrile rubber be used, and what do we need to pay attention to? Powdered nitrile rubber is characterized by a large molecular weight, good flex resistance, excellent mechanical properties, superior impact modification performance, and good plasticizing properties. It is a high-quality flowable powder, a polymer formed by the reaction of butadiene and acrylonitrile. It is a processing raw material specially developed to improve the performance of PVC plastics, especially semi-rigid and flexible PVC products. It has good compatibility with PVC and can be mixed with PVC in the required amount at the end of blending to produce economical thermoplastic elastomers. The modified PVC has excellent elongation, wear resistance, oil resistance, and strength, and can reduce the migration and volatilization of plasticizers in PVC, extending the service life of the products. Powdered nitrile rubber is mainly used in fields such as PVC pipes, profiles, cable materials, rain boot soles, car floor mats, corrugated pipes, fire hoses, sheets, wood-plastic floors, hoses, and sealing strips. It improves the quality of the above PVC products and enhances their toughness, cold resistance, wear resistance, and oil resistance. Powdered nitrile rubber developed according to the formula systems of different products plays different roles in different fields: When used in the production of various profiled doors and windows, powdered nitrile rubber can improve cold resistance and heat resistance, extend the service life, with a dosage of 8-10 parts, and the impact strength can be increased by 3-4 times; When used in the production of car floor mats, it can improve wear resistance and rebound resilience, with a dosage of 8 parts; When used in the production of shoe soles, it can improve wear resistance and softness, and the dosage range varies from 6-12 parts depending on the type of shoes; When used in the production of cables with excellent electrical performance, it can improve flame retardancy and anti-aging performance, with a dosage of 9-15 parts; When used in hoses, it can improve softness and effectively prevent aging, with a dosage of 10-20 parts; When used in floor tiles, it can resist sunlight and high temperatures without cracking, with a dosage of 8-16 parts. What we need to pay attention to when using powdered nitrile rubber is the issue of plasticization. Excessively high temperatures will cause pores to form. In addition, do not mix plasticizer DOP, PVC, and powdered nitrile rubber together, because powdered nitrile rubber will preferentially absorb DOP, leading to uneven mixtures. Too short a plasticizing time will also affect the granulation effect.