impact modifier is a chemical that can improve the low-temperature embrittlement of polymer materials and endow them with higher toughness. As the demand for engineering plastics is growing strongly, the consumption of impact modifier is increasing. Experts pointed out that the development trend of impact modifier in the future is better performance, cheaper price and faster action. It can significantly improve the impact resistance of PVC by improving the performance of main materials or making components thinner under the premise of ensuring performance.