Modified plastics refer to plastic products that have improved flame retardancy, strength, impact resistance, toughness and other properties on the basis of general plastics and engineering plastics through filling, blending, reinforcement and other methods.

Modified plastic parts can not only achieve the strength properties of some steel, but also have a series of advantages such as light weight, rich colors, and easy molding. Therefore, the current trend of "replacing steel with plastic" has emerged in many industries. It is almost impossible to find a material that can replace plastic products on a large scale.

Modified plastics is a plastics industry that involves a wide range of areas, high technology content and can create huge economic benefits. The plastic modification technology - filling, blending and reinforcement modification is deeply penetrated into the raw materials and molding processes of almost all plastic products. From the production of raw resin to the modified plastic masterbatch of various specifications and varieties, in order to reduce the wood production of plastic products and improve their functionality, plastic modification technology is inseparable.

Ordinary plastics often have their own characteristics and defects. Modified plastics are to change the properties of plastics. The basic technologies include:

1) Reinforcement: Use glass fiber to change the strength of the plastic.

2) Filling: Fill common plastic with some minerals to change the properties of the plastic family.

3) Toughening: Adding some toughening agents to ordinary plastics makes these plastics have strong toughness.

4) Flame retardant: adding flame retardant to ordinary plastic resin can make the plastic have flame retardant properties.

5) Cold resistance: generally refers to the cold resistance of plastics at low

temperatures. Due to the inherent low temperature brittleness of plastics, plastics become brittle at low temperatures, so plastic parts like automobiles generally require cold resistance.