Yintoni impahla ye-EVA? Uhlalutyo olubanzi lweempawu kunye nokusetyenziswa kwezinto ze-EVA
I-EVA yinto eqhelekileyo kwaye isetyenziswa ngokubanzi kwishishini lemichiza, yintoni i-EVA? Kweli nqaku, siza kwazisa ngokweenkcukacha iimpawu ezisisiseko ze-EVA, inkqubo yokuvelisa kunye nokusetyenziswa kwayo kumashishini ahlukeneyo ukukunceda ukuba uqonde kangcono le mpahla emininzi.
Okokuqala, inkcazo eyisiseko kunye nokubunjwa kwe-Eva
I-EVA (i-ethylene vinyl acetate copolymer) yinto yepolymer eyenziwe kwi-copolymerization ye-ethylene kunye ne-vinyl acetate (VA). Ubume balo beekhemikhali bumisela ukuguquguquka kwayo okugqwesileyo, ukuchasana kweekhemikhali kunye nenqanaba eliphantsi lokunyibilika.Iimpawu ze-EVA zinokuhlengahlengiswa ngokutshintsha umxholo we-vinyl acetate, umxholo ophezulu, ungcono ukuguquguquka kwezinto, kodwa amandla omatshini ayancipha.
Okwesibini, inkqubo yokuvelisa i-Eva
Ukuveliswa kwe-EVA ikakhulu ngempendulo yoxinzelelo oluphezulu lwepolymerisation. Kwinkqubo ye-polymerisation, i-ethylene kunye ne-vinyl acetate kwiqondo lokushisa eliphezulu kunye noxinzelelo oluphezulu ngokusebenzisa i-copolymerization ye-radical free radical, ukubunjwa kweemali ezahlukeneyo ze-VA EVA resin. Ukulungelelaniswa kwenkqubo yokuvelisa kunokuchaphazela ukusebenza kwezinto eziphathekayo, umzekelo, umxholo ophezulu we-vinyl acetate unokunyusa ukucaca kunye nokuthambile kwe-EVA, i-resin ye-EVA inokuqhutyelwa phambili kwifilimu, i-sheet okanye izinto ze-foam, ezisetyenziswa kwiinkqubo ezahlukeneyo zoshishino.
Okwesithathu, iimpawu eziphambili zezinto ze-Eva
Izinto ze-EVA zisetyenziswa ngokubanzi ngenxa yeempawu zayo ezizodwa kunye neekhemikhali. It has bhetyebhetye elungileyo kunye nokunwebeka, nkqu kumaqondo obushushu aphantsi inokuhlala soft.EVA has egqwesileyo ukuxhathisa impembelelo kunye noxhathiso abrasion, nto leyo eyenza ukuba kwisidingo ukuqina kunye nokukhuselwa isicelo ebalaseleyo performance.EVA impahla kwakhona ukuxhathisa okulungileyo kwimitha ultraviolet kunye nokumelana imichiza, nto leyo eyenza ukuba ilungele ukusetyenziswa ngaphandle.
Okwesine, iindawo zokusetyenziswa kwezinto ze-Eva
Emva kokuqonda ukuba yintoni impahla ye-EVA, makhe sijonge kwiindawo zayo eziphambili zokusetyenziswa, izinto ze-EVA zisetyenziswa ngokubanzi ekwenzeni izihlangu, ngakumbi kwimveliso yeesole kunye ne-midsoles, ngenxa yokusebenza kwayo kakuhle kunye neempawu ezilula zithandwa, i-EVA ikwasetyenziswa kwishishini lokupakisha, elenziwe ngegwebu elikhuselayo okanye ifilimu, esetyenziswa kwimveliso ye-elektroniki yokupakisha, i-EVA isetyenziselwa ukupakishwa kwe-elektroniki ngokuthe ngcembe! I-EVA ikwanyusa ngokuthe ngcembe ukusetyenziswa kwayo kwishishini lezonyango, ikakhulu esetyenziselwa ukwenza iingxowa zokugalela kunye nokupakishwa kwamayeza.
Okwesihlanu, ikamva lophuhliso lwezixhobo ze-EVA
Ngokwandiswa kolwazi lokusingqongileyo, imathiriyeli ye-EVA ikwakwicala lophuhliso oluzinzileyo. Uphando lwemathiriyeli ye-EVA eyonakaliswayo luguquguquka ngokupheleleyo, ikamva linokwazisa ngakumbi ngokusingqongileyo izixhobo ze-EVA zokuhlangabezana neemfuno zemimandla eyahlukeneyo. Ngokuqhubela phambili kwesayensi kunye nobuchwepheshe, ukusebenza kwezixhobo ze-EVA kulindeleke ukuba kuphuculwe ngakumbi, kuvuleke iimeko ezininzi zokusetyenziswa.
Ukuqukumbela
I-EVA yimathiriyeli enentsebenzo egqwesileyo kunye noluhlu olubanzi lwezicelo. Ngokusungulwa kweli nqaku, kuya kufuneka ube nokuqonda okunzulu ngakumbi malunga nomba othi "yintoni impahla ye-EVA". Ingaba kubomi bemihla ngemihla, iimveliso zoshishino, okanye izixhobo zonyango, izinto ze-EVA zidlala indima ebalulekileyo. Kwixesha elizayo, kunye nenkqubela phambili yetekhnoloji kunye neemfuno zokukhuselwa kwendalo, ukusetyenziswa kwezinto ze-EVA kuya kuba ngamathemba abanzi.