MBS (methyl methacrylate butadiene styrene copolymer) impact modifier is an important polymer material additive,
Application in different plastics:
Polyvinyl chloride (PVC):
MBS is a commonly used impact modifier for hard PVC. It can significantly improve the impact strength of PVC without affecting its transparency, making it suitable for products that require both transparency and impact resistance, such as transparent packaging films, heat shrink films, twisted films, etc.
In soft PVC, MBS can also improve its flexibility and impact resistance, while having minimal impact on other properties.
Engineering plastics:
MBS can improve the impact resistance and processing performance of polycarbonate (PC) and its alloys. For example, in PC/ABS alloys, MBS can enhance the toughness of the alloy, making it suitable for fields such as electronics and electrical enclosures that require high material performance.
For polyester engineering plastics such as PBT and PET, MBS can be used as a toughening agent to improve their impact resistance at low temperatures and expand their application range.
Advantages and Characteristics:
Good transparency: MBS has a refractive index similar to PVC and other plastics, so when used as an impact modifier, it will not affect the transparency of plastics, which is of great significance for the production of transparent plastic products.
Good compatibility with the matrix resin: MBS has solubility parameters similar to various plastics and can be uniformly mixed with the matrix resin to form a stable system, effectively exerting its impact modification effect.
Small impact on other properties: While improving the impact resistance of plastics, MBS has little effect on other mechanical properties such as tensile strength, elongation at break, as well as thermal stability, chemical stability, etc., and can maintain the comprehensive performance of plastics.
The impact on processing performance:
Improving processing flowability: MBS can reduce the melt viscosity of plastics, enhance their processing flowability, make plastics easier to form during processing, and reduce processing difficulty and energy consumption.
Good processing stability: MBS has good thermal and chemical stability, and is not easily decomposed or undergoes chemical reactions during plastic processing, ensuring the stability of the processing process and product quality.