Yiziphi izici ezinquma ikhwalithi yesikhwama se-Eva?
Njengempahla yokupakisha evamile, ikhwalithi yeIzikhwama ze-EVAithonywa izici eziningi. Nazi ezinye zezinto ezibalulekile ezinquma ngokuhlanganyela ikhwalithi nokusebenza kwezikhwama ze-EVA:
1. Ukwakheka kwezinto
Izinga lezikhwama ze-EVA lincike kuqala ekubunjweni kwayo kwezinto ezibonakalayo, ikakhulukazi okuqukethwe kwe-ethylene-vinyl acetate (VA). I-EVA yinto eyenziwe yi-copolymerization ye-ethylene ne-vinyl acetate, futhi okuqukethwe kwe-VA ngokuvamile kuphakathi kuka-5% no-40%. Inani le-VA lithinta ngokuqondile ukusebenza kwezikhwama ze-EVA, njengokuguquguquka, ukumelana nomthelela, ukukhanya, njll.
2. Isakhiwo samangqamuzana
Ukwakheka kwamangqamuzana e-Eva nakho kunethonya elibalulekile kukhwalithi. Ngemuva kokwethulwa kwe-vinyl acetate monomer ochungechungeni lwamangqamuzana e-EVA, ubucwebe obuphezulu buyancipha futhi ukuqina nomthelela wokumelana kuyathuthukiswa. Ngakho-ke, idizayini yesakhiwo samangqamuzana ezikhwama ze-EVA ibalulekile ekusebenzeni kwazo.
3. Inqubo yokukhiqiza
Inqubo yokukhiqiza yezikhwama ze-EVA nayo iyisici esibalulekile. Izinkampani eziningi zisebenzisa izinqubo ze-polymerization yenqwaba yokucindezela okuphezulu okuqhubekayo, okuhlanganisa indlela yeketela kanye nendlela ye-tubular. Umehluko kulezi zinqubo uzoholela kumehluko ekusebenzeni kwemikhiqizo ye-EVA, njengokumelana nokushaqeka nokumelana nokuguga.
4. Ukucubungula nokubumba
I-EVA iyi-polymer ye-thermoplastic engasetshenziselwa izinqubo ezahlukahlukene zokucubungula nokubumba ezifana nokubumba umjovo, ukubunjwa kwe-extrusion, nokubunjwa kwe-blow. Ukubumba kwe-EVA kunezinga lokushisa eliphansi lokucubungula (160-200 ℃), ububanzi obubanzi, kanye nezinga lokushisa eliphansi lesikhunta (20-45℃). Lezi zimo zokucubungula zizothinta ikhwalithi yokugcina yesikhwama se-EVA.
5. Ukuminyana nobulukhuni
Ukuminyana kwesikhwama se-EVA kuvamise ukuba phakathi kuka-0.9-0.95 g/cm³, futhi ubulukhuni buvamise ukuvivinywa kusetshenziswa ubulukhuni be-Shore A, ngebanga lobulukhuni obujwayelekile elingu-30-70. Le mingcele yokusebenza ngokomzimba ihlobene ngokuqondile namandla nokusebenza kwe-cushioning kwesikhwama se-EVA.
6. Ukusebenza kwemvelo
Izikhwama ze-EVA kufanele zihlangabezane nezidingo zokuvikelwa kwemvelo, zingafaki izinto eziyingozi, futhi zithobele izindinganiso nemithethonqubo efanele yezemvelo. Ukusebenza kwemvelo kuyisici abathengi banamuhla abakhathazeka kakhulu ngaso lapho bekhetha imikhiqizo.
7. Ukuklama
Ukwakheka kwesikhwama se-EVA nakho kuzothinta ikhwalithi yaso. Idizayini ihlanganisa ukukhethwa kwezindwangu, ukujiya nobulukhuni be-Eva, kanye nokwakheka kwesakhiwo somkhiqizo. Idizayini enhle ingathuthukisa ukusebenza kanye nobuhle bezikhwama ze-EVA.
8. Ukumelana nokucindezela nokumelana nokushaqeka
Izikhwama ze-EVA kufanele zibe nokumelana nokucindezelwa okuthile kanye nokumelana nokushaqeka ukuze kuvikelwe izinto ezipakishiwe emthelela wangaphandle kanye nokukhishwa
9. Ukumelana namanzi nokumelana nokugqwala
Izikhwama ze-EVA ezisezingeni eliphezulu kufanele zibe nokungazweli kahle kwamanzi nokumelana nokugqwala, futhi zikwazi ukumelana nokugqwala okuvela emanzini olwandle, amafutha, i-asidi, i-alkali namanye amakhemikhali.
Kafushane, ikhwalithi yezikhwama ze-EVA inqunywa izici eziningi ezifana nokwakheka kwezinto, ukwakheka kwamangqamuzana, inqubo yokukhiqiza, ukucubungula nokubumba, izakhiwo ezibonakalayo, ukusebenza kokuvikela imvelo, ukuklama, ukumelana nokucindezela nokumelana nokushaqeka, kanye nokumelana kwamanzi nokugqwala. ukumelana. Abakhiqizi badinga ukucabangela lezi zici ngokugcwele ukuze bakhiqize izikhwama ze-EVA zekhwalithi ephezulu.
Isikhathi sokuthumela: Nov-27-2024