| abstract |
The invention discloses a composition and a preparation method for preparing a high-elastic memory EVA composite foam material for sports shoe soles. The composition comprises the following components in parts by mass: 15-30 parts by mass of ethylene-vinyl acetate copolymer, 15-25 parts by mass of polyolefin elastomer, 10-20 parts by mass of α-polyolefin block copolymer, 15-25 parts by mass of hydrogenated styrene elastomer, 5-10 parts by mass of isotactic polybutene, ethylene propylene glycol 5-10 parts by mass of rubber, 0.8-1.8 parts of active agent, 0.5-1 part of cross-linking agent, 2-3 parts of foaming agent and 0.3-0.5 part of cross-linking assistant; wherein vinyl acetate in the ethylene-vinyl acetate copolymer The content is 20%-30%, and the hydrogenation degree of the hydrogenated styrene elastomer is greater than 95%. The composition of the invention can obtain an ideal combination of raw materials and functions, and the composite foam material has the characteristics of high hardness, high resilience, excellent recovery performance, excellent buffer resistance, compression resistance, small compression deformation, bending deformation resistance, etc., and is durable in wear. Comfortable. |