Kedu ihe na-eme ka akpa egwuregwu EVA kwụsị

Ụfọdụ ndị enyi achọtala ụdị ọnọdụ ahụ. Amaghị m ihe kpatara ya. Agba nke akpa egwuregwu a agwụla mgbe ejiri ya ogologo oge. M na mbụ chere na ọ bụ ihe na-agaghị ada ada, ma ugbu a, ọ agwụla. Ya mere, ka anyị leba anya n'ihe kpatara ya. Kedu ihe kpatara akpa egwuregwu EVA na-ada ada?

Ihe ndị na-emetụta mbelata nke plastikEVAngwaahịa. Mbelata nke ngwaahịa ndị nwere agba plastik metụtara nguzogide ọkụ, ikuku oxygen, nguzogide okpomọkụ, acid na alkali na-eguzogide pigmenti na agba agba, na njirimara nke resin eji. Dabere na ọnọdụ nhazi na ojiji achọrọ nke ngwaahịa rọba, ihe ndị a kpọtụrụ aha n'elu nke pigmenti achọrọ, agba, surfactants, dispersants, resins carrier and anti-ging additives kwesịrị ịtụle nke ọma n'oge mmepụta nke masterbatch tupu nhọrọ.

1. Acid na alkali eguzogide Mbelata nke ngwaahịa rọba acha na-ejikọta na nguzogide kemịkalụ nke colorant (acid na alkali resistance, redox resistance).
Dịka ọmụmaatụ, molybdenum chromium acha ọbara ọbara na-eguzogide ọgwụ acid, ma ọ na-enwe mmetụta nke alkali, na cadmium yellow adịghị eguzogide acid. Agba abụọ a na resin phenolic nwere mmetụta mbelata siri ike na ụfọdụ agba, na-emetụta oke nguzogide okpomọkụ na nguzogide ihu igwe nke ndị na-acha agba na-eme ka ọ daa.

2. Antioxidation: Ụfọdụ organic pigments ji nwayọọ nwayọọ na-ada n'ihi mmebi nke macromolecules ma ọ bụ ndị ọzọ mgbanwe mgbe oxidation.

Usoro a na-agụnye oke okpomọkụ oxidation n'oge nhazi na oxidation mgbe ị na-ezute oxidants siri ike (dị ka chromate na chromium odo). Mgbe agwakọtara ọdọ mmiri, pigmenti azo na chrome yellow, agba ọbara ọbara ga-eji nwayọọ nwayọọ na-ada.

3. Nkwụsi ike nke okpomọkụ nke pigmenti na-eguzogide okpomọkụ na-ezo aka n'ókè nke nkwụsị nke okpomọkụ, nkwụsịtụ, na nkwụsị nke pigmenti n'okpuru nhazi okpomọkụ.

Ihe ndị dị na pigmenti inorganic bụ metal oxides na salts, nke nwere ezigbo nkwụsi ike nke okpomọkụ na oke okpomọkụ. Pigments sitere na ogige ndị dị ndụ ga-enwe mgbanwe n'ụdị molekụla na obere ego nke ire ere na ụfọdụ okpomọkụ. Karịsịa maka ngwaahịa PP, PA na PET, nhazi okpomọkụ dị n'elu 280 ° C. Mgbe ị na-ahọrọ agba agba, n'otu aka ahụ, anyị ga-aṅa ntị na nguzogide okpomọkụ nke pigmenti, na n'aka nke ọzọ, anyị ga-atụle oge nkwụsị okpomọkụ nke pigmenti. Oge nguzogide okpomọkụ na-abụkarị 4-10 mmiri ozuzo. .