Ndezvipi zvinhu zvinotarisa kunaka kwebhegi reEva?
Sechinhu chakajairika chekurongedza, kunaka kweEVA masagainokanganiswa nezvinhu zvakawanda. Heano zvimwe zvinhu zvakakosha izvo zvinosanganisa kunaka uye kuita kweEVA mabhegi:
1. Kuumbwa kwezvinhu
Hunhu hwemabhegi eEVA hunobva pakutanga pakuumbwa kwayo kwezvinhu, kunyanya zvirimo ethylene-vinyl acetate (VA). EVA chinhu chakagadzirwa necopolymerization ye ethylene uye vinyl acetate, uye iyo VA yemukati kazhinji iri pakati pe5% ne40%. Huwandu hweVA hunokanganisa zvakananga mashandiro emabhegi eEVA, senge kuchinjika, kukanganisa kuramba, kujeka, nezvimwe.
2. Chimiro chemolecular
Iyo molecular chimiro cheEva inewo yakakosha pesvedzero pamhando. Mushure mekuunzwa kwevinyl acetate monomer muEVA molecular chain, iyo yakakwira crystallinity inodzikiswa uye kuoma uye kukanganisa kuramba kunovandudzwa. Naizvozvo, iyo molecular chimiro dhizaini yemabhegi eEVA yakakosha pakuita kwavo.
3. Nzira yekugadzira
Maitiro ekugadzira emabhegi eEVA zvakare chinhu chakakosha. Mazhinji makambani anoshandisa yakakwirira-kumanikidza inoenderera yakawanda yakawanda polymerization maitiro, kusanganisira kettle nzira uye tubular nzira. Misiyano mumatanho aya inotungamira kune mutsauko mukuita kweEVA zvigadzirwa, senge kuvhunduka kuramba uye kuramba kuchembera.
4. Kugadzira uye kuumba
EVA ndeye thermoplastic polymer inogona kushandiswa kune dzakasiyana siyana kugadzirisa uye kuumba maitiro senge jekiseni molding, extrusion molding, uye blow molding. EVA kuumba ine yakaderera kugadzirisa tembiricha (160-200 ℃), yakafaranuka, uye yakaderera mold tembiricha (20-45 ℃). Aya mamiriro ekugadzirisa anozokanganisa kunaka kwekupedzisira kwebhegi reEva.
5. Density uye kuoma
Kuwanda kwebhegi reEVA kazhinji kuri pakati pe 0.9-0.95 g/cm³, uye kuomarara kunowanzo kuedzwa uchishandisa Shore A kuomarara, nekuomarara kwakajairwa kwe30-70. Aya maparamendi ekuita kwemuviri ane hukama zvakananga kune simba uye cushioning kuita kwebhegi reEVA.
6. Kuita kwezvakatipoteredza
Mabhegi eEVA anofanirwa kusangana nekuchengetedzwa kwezvakatipoteredza, asina zvinhu zvinokuvadza, uye anoenderana neakakodzera mazinga nemirairo. Kuita kwezvakatipoteredza chinhu icho vatengi vemazuva ano vari kuwedzera kunetseka pamusoro pekusarudza zvigadzirwa.
7. Dhizaini
Dhizaini yebhegi yeEva ichakanganisawo kunaka kwayo. Dhizaini inosanganisira kusarudzwa kwemachira, ukobvu uye kuoma kweEva, uye dhizaini yechigadzirwa. Dhizaini yakanaka inogona kuvandudza kuita uye aesthetics yeEVA mabhegi.
8. Kudzvinyirira kuramba uye kusagadzikana kwekutya
EVA mabhegi anofanirwa kuve nekumwe compression kuramba uye kuvhunduka kudzivirira kuchengetedza zvinhu zvakaputirwa kubva kune ekunze kukanganisa uye extrusion
9. Kuramba kwemvura uye kusagadzikana kwemarara
Mabhegi eEVA emhando yepamusoro anofanirwa kunge aine kumira zvakanaka kwemvura uye kusagadzikana kwemarara, uye kukwanisa kurwisa kuora kubva mumvura yegungwa, girisi, acid, alkali nemamwe makemikari.
Muchidimbu, mhando yemabhegi eEVA inotemerwa nezvinhu zvakawanda senge kuumbwa kwezvinhu, chimiro chemolecular, kugadzira, kugadzirisa uye kuumba, zvimiro zvemuviri, kuchengetedza kwezvakatipoteredza, dhizaini, kumanikidza kuramba uye kushomeka kuramba, pamwe nekuramba kwemvura uye ngura. resistance. Vagadziri vanofanirwa kufunga nezvezvinhu izvi zvizere kugadzira emhando yepamusoro EVA mabhegi.
Nguva yekutumira: Nov-27-2024