The main processing methods for plastic modification include filler modification, blending modification, chemical modification, and copolymerization modification. These methods improve the properties of plastics through physical and chemical means to meet different application needs.

‌ Filler Modification: By adding a certain amount of filler to the plastic, the production cost can be effectively reduced, and at the same time, nanopowders with special functions can be added to produce corresponding functional masterbatches. Filler modification can improve the flame retardancy, strength, impact resistance, and toughness of plastics.

Blending Modification: Two or more polymer compounds with similar properties are mixed in a certain proportion to produce a polymer blend. This method can form a polymer alloy in which each component is uniformly dispersed through the action of mechanical mixing, shearing, etc., thereby improving the physical and chemical properties of the plastic.

Chemical Modification: By changing the basic composition of the plastic through chemical reactions to improve its properties. Chemical modification includes grafting modification, block copolymer modification, and crosslinking modification. Grafting modification is a polymerization reaction between polymer monomers and the polymer main chain, while block copolymerization is the combination of different types of macromolecular free radicals to form block copolymers. Crosslinking modification is the formation of a network structure through a crosslinking reaction to enhance the mechanical properties of the material.

Copolymer Modification: Two or more monomers undergo a polymerization reaction to obtain a copolymer. For example, ethylene and propylene can polymerize to form ethylene-propylene rubber, and acrylonitrile, butadiene, and styrene can polymerize to form ABS resin. Copolymer modification can adjust the molecular structure and properties of the polymer to meet specific application needs.