Die materiaal wat gebruik word vir EVA-sole is etileen / vinielasetaatkopolymeer (ook bekend as etileen-vinielasetaatkopolymeer), wat vervaardig word deur etileen (E) en vinielasetaat (VA) te kopolymeriseer. Die Engelse naam is EthyleneVinylAcetate. EVA genoem, die inhoud is tussen 5% en 40%.

In vergelyking met poliëtileen word EVA baie gebruik in skuimskoene as gevolg van die bekendstelling van vinielasetaatmonomeer in die molekulêre ketting, wat die hoë kristalliniteit verminder, die buigsaamheid, slagweerstand, vulstofversoenbaarheid en die hitte seëlprestasie verbeter. Materiaal, funksionele skuurfilms, verpakkingsfilms, smeltgom, drade en kabels, speelgoed en ander velde.

Eienskappe van EVA-sool:

EVA-voetsole word gekenmerk deur goeie buigsaamheid, rubberagtige elastisiteit, en kan steeds goeie buigsaamheid onder 0 ℃ hê, deursigtigheid en oppervlakglans, goeie chemiese stabiliteit, goeie verouderingsweerstand en osoonbestandheid, Nie-giftig. Goeie vermenging met vuller, goeie kleur- en vormverwerkbaarheid.

It is closely related to the vinyl acetate content, molecular weight and melt index. When the melt index (MI) is constant and the content of vinyl acetate (VA) increases, its elasticity, flexibility, compatibility, and transparency also increase. When the VA content is reduced, the performance is close to polyethylene, the rigidity is increased, and the wear resistance and electrical insulation are improved.

If the VA content is constant, the melt index increases, the softening point decreases, the processability and surface gloss improve but the strength decreases. Otherwise, as the MI decreases, the molecular weight increases and the impact performance and environmental stress cracking resistance increase. Acetate polarity increases elasticity and viscosity, crystallinity and electrical properties decrease, soluble in hydrocarbon solvents and oils.

Is the EVA sole made of EVA material durable? This has two sides. If there is a good one, there will definitely be a bad side, so this is hard to say. EVA sole material is a polymer material, commonly used for jogging, jogging, casual shoes, foot training soles. The EVA sole made of EVA sole material is very light and elastic, but the elasticity decreases after wearing for a long time.

Advantages: EVA sole is light, elastic, flexible, not wrinkle-free, has excellent coloring properties, and is suitable for various climates.

Disadvantages: EVA soles are easy to absorb water, not easy to corrode, not environmentally friendly, easy to dirty, and will become hard and flat after a long time.

Because the EVA resin blended e799bee5baa6e997aee7ad94e59b9ee7ad9431333431343037 foamed products have soft, good elasticity, chemical resistance and other properties, EVA soles are widely used in the soles and interior materials of high-end travel shoes, hiking shoes, slippers, sandals.