Recycled PE particles have made significant technological progress in modification processing, which not only improve the performance of recycled particles, but also broaden their application areas. Here are some of the major technological advances:
Blending modification: By blending Recycled PE particles with other polymer materials (such as virgin PE, PP, ABS, etc.), the mechanical properties, processing performance and weather resistance of the recycled particles can be significantly improved. Blending modification realizes the complementary advantages between different materials and improves the comprehensive performance of Recycled PE particles by optimizing formula design and processing technology.
Graft modification: Using chemical reactions to graft specific functional groups or polymer chains on the surface of Recycled PE particles, it can improve its compatibility, adhesion and surface properties with other materials. Graft modification technology gives Recycled PE particles new functional properties by introducing new chemical structures to meet application needs in specific fields.
Cross-linking modification: Through radiation cross-linking, chemical cross-linking and other methods, the molecular chains inside the Recycled PE particles are cross-linked to form a three-dimensional network structure, thereby improving its strength, heat resistance and solvent resistance. Cross-linking modification technology significantly improves the durability and service life of Recycled PE particles, allowing it to maintain good performance in harsh environments such as high temperature and high pressure.
Toughening modification: Adding toughening agents such as elastomers and thermoplastic elastomers to Recycled PE particles can effectively improve its impact resistance and toughness. Toughening modification technology uses toughening agent particles dispersed in the matrix to absorb energy when impacted by external forces, thereby slowing down the expansion of cracks and the occurrence of fractures.
Filling modification: Adding inorganic fillers (such as calcium carbonate, talc, wollastonite, etc.) or organic fillers (such as wood flour, starch, etc.) to Recycled PE particles can reduce its cost and improve rigidity and heat resistance. Filling modification technology achieves a balance between performance and cost of Recycled PE particles by optimizing the type, particle size and distribution of fillers.
The continuous development and innovation of these modification processing technologies provide strong support for the application of Recycled PE particles in a wider range of fields. With the improvement of environmental awareness and the popularization of the concept of sustainable development, the modification treatment technology of Recycled PE particles will continue to receive attention and promotion, contributing to the construction of a green, low-carbon, and circular economic development model.
