EVA thovu zinthu

EVA ndiye polima wachinayi pakukula kwa ethylene pambuyo pa HDPE, LDPE ndi LLDPE.Poyerekeza ndi zipangizo zamakono, mtengo wake ndi wotsika kwambiri.Anthu ambiri amaganiza kuti thovu la EVA ndilophatikizira bwino chipolopolo cholimba ndi chipolopolo chofewa, kusunga ubwino wa thovu lofewa komanso lolimba ndikusiya kuipa.Komanso, kusinthasintha kwachilengedwe pamapangidwe azinthu ndi kuthekera kopanga ndichinthu chofunikira kwambiri m'makampani ena otsogola padziko lonse lapansi kutembenukira ku thovu la EVA pakafunika zida zapamwamba komanso zotsika mtengo.

Kupitilira kusinthika, zinthu za thovu za EVA zimasamalira moyo wathu watsiku ndi tsiku ndi zochitika zabizinesi, ndipo zadzetsa chidwi kwa ogwiritsa ntchito.Nsapato, mankhwala, mapanelo a photovoltaic, masewera ndi zinthu zosangalatsa, zoseweretsa, pansi/makasa a yoga, zopakira, zida zamankhwala, zida zodzitetezera, wat

Zogulitsa zamasewera zikufunika kwambiri zamapulasitiki olimba, ndipo gawo la msika wa thovu la EVA likupitiliza kubweretsa kukula kwatsopano kwa.

丨EVA thupi ndi makina katundu

Makhalidwe a EVA copolymers amatsimikiziridwa makamaka ndi vinyl acetate zomwe zili ndi kuchuluka kwa fluidity.Kuwonjezeka kwa zinthu za VA kumawonjezera kachulukidwe, kuwonekera komanso kusinthasintha kwa zinthuzo ndikuchepetsa kusungunuka ndi kuuma.Ethylene-vinyl acetate copolymer (EVA) ndi zinthu zotanuka kwambiri zomwe zimatha kuwongoleredwa kuti zipange thovu ngati labala, koma mwamphamvu kwambiri.Imasinthasintha kuwirikiza katatu kuposa low density polyethylene (LDPE), imakhala ndi kutalika kwa 750%, ndipo imakhala ndi kutentha kokwanira 96 ​​° C.

Kutengera zosakaniza zomwe zikupanga, magawo osiyanasiyana a kuuma kwa EVA atha kukwaniritsidwa.Ndikofunikira kukhalabe ndi kuuma kwapakati chifukwa EVA sabwereranso mawonekedwe ake pambuyo pa kukanikiza kosalekeza.Poyerekeza ndi EVA yolimba, EVA yofewa imakhala yosagonjetsedwa ndi abrasion ndipo imakhala ndi moyo wautali payekha, koma imakhala yabwino.

丨 EVA matenthedwe katundu

Malo osungunuka a EVA amachepetsa ndi kuwonjezeka kwa VA.Chifukwa chake, kutentha kwa copolymer ndikotsika poyerekeza ndi homopolymer yofananira (LDPE).The pazipita ntchito kutentha kwa workpiece ndi zosakwana kutentha kufewetsa Vicat.Mofanana ndi ma polima onse a thermoplastic, kutentha kumatengera nthawi komanso kuchuluka kwa kupsinjika kwamakina komwe chogwirira ntchito chimatenthedwa.Pamene kutentha kumawonjezeka, kutentha kwa conductivity kumachepa mpaka kufika pamtunda pafupi ndi malo osungunuka.

Makina Odulira Siponji