Polyphenylene Ether Resin Composition Impact Resistance

The invention changes the particle size parameter of the elastomer component to a specific range (0.01 to 0.5 μm, preferably 0.03 to 0.2 μm) to resolve the contradiction between impact resistance and molding fluidity. This fine particle size allows the elastomer to disperse uniformly without significantly increasing viscosity, thereby maintaining good molding fluidity while providing sufficient impact resistance through proper dispersion throughout the polyphenylene ether matrix.

The invention creates a composite material system combining polyphenylene ether with specifically sized elastomer particles (0.01 to 0.5 μm) to achieve both high impact resistance and good molding fluidity. The composite structure allows the elastomer particles to act as impact modifiers while their fine size prevents excessive viscosity increase, resolving the contradiction between strength improvement and processing performance.

The invention changes the particle size parameter to an ultra-fine range (0.01 to 0.5 μm) that is below the visible light wavelength threshold, making the dispersed elastomer particles optically invisible. This resolves the contradiction by providing impact resistance through dispersion while maintaining appearance brightness, as the fine particles do not scatter or absorb visible light significantly.

The invention applies the elastomer component at the molecular/dispersion level throughout the polyphenylene ether matrix, creating uniform local protection against impact while maintaining the bulk material's optical properties. The elastomer particles are distributed at such a fine scale that they provide impact resistance locally without affecting the overall appearance brightness of the molded article.

The invention changes the molecular weight parameter of the elastomer component to a lower range, avoiding the use of high-molecular weight SEBS that causes delamination. By selecting elastomers with appropriate molecular weights and controlling particle size to 0.01 to 0.5 μm, the invention achieves impact resistance without the adverse delamination effects associated with high-molecular weight elastomers.

The invention uses fine elastomer particles (0.01 to 0.5 μm) that disperse uniformly at the local level within the polyphenylene ether matrix, creating consistent interfacial adhesion throughout the material. This uniform fine-scale dispersion prevents the localized stress concentrations and poor adhesion that lead to delamination, while still providing sufficient impact resistance through the distributed elastomer phase.