1.Definition and Function

Impact modifiers improve the resistance of polymer materials to external impacts by altering their internal structure, making plastic products less prone to breakage or deformation when subjected to external forces. This characteristic has made impact modifiers widely used in the production of plastic products.

2.Types

There are many types of impact modifiers, commonly including CPE (chlorinated polyethylene), ACR (acrylic ester copolymer), MBS (methyl methacrylate butadiene styrene copolymer), etc. These modifiers have their own characteristics and are suitable for different polymer materials and application scenarios.

3.Mechanism of action

CPE: During the PVC processing, CPE undergoes plasticization to form a certain three-dimensional network structure under certain shear and heat effects. This structure can absorb energy such as impact, tension, and shear that the material is subjected to during use, thereby protecting the material from damage. However, the processing conditions for CPE are quite demanding, and temperatures that are too low or too high may result in the inability to form or damage the network structure.

ACR: ACR is a core-shell structure, with a soft elastic core that endows the product with impact resistance; Its shell has good compatibility with PVC, and the shell surrounding the core can isolate the modifier particles from each other, forming fine powder particles that can flow freely. This structure helps to promote the dispersion of the modifier in the polymer matrix and enhance the interaction between the modifier and PVC resin, thereby improving the impact resistance of the product.

4.Performance application:

main performance

Improve the low-temperature brittleness of polymer materials and enhance their toughness.

During the processing, a network structure is formed to absorb energy such as impact, tension, and shear, protecting the material from damage.

application area

Widely used in the production of plastic products such as PP plastics and PVC resins.

In PVC products, the use of impact modifiers is relatively high, such as PVC plastic steel doors and windows, PVC pipes, etc.

With the development of technology, the application fields of impact modifiers are constantly expanding, such as PC PBT、 Impact modifiers have also been used in resins such as nylon and ABS to improve their processing performance and impact strength.

Specific function

Improve the impact resistance of plastic products to prevent them from breaking or deforming during use.

Improve the processing performance of polymer materials, such as increasing melt flowability and reducing processing temperature.

In certain special applications, such as transparent or outdoor products, specific impact modifiers are required to meet specific performance requirements.

Email:wong@htxchemical.com