Menene hanyoyin samar da kayan gyare-gyaren busa mara kyau?

Ƙa'idar samar da kayan gyare-gyaren busa mara ƙarfi da hanyar gyare-gyarensa Abin da ake kira na'urar gyare-gyaren busawa kuma ana kiransa injin gyare-gyare mai zurfi.Ana narkar da robobin kuma a fidda shi da yawa a cikin screw extruder, sannan a samar da shi ta cikin fim din na baka, sannan a sanyaya da zoben iska, sannan a busa shi a cikin kwandon.Hanyar sarrafa robobi mai saurin girma.The tubular roba parison samu ta extrusion ko allura gyare-gyare na thermoplastic guduro ana sanya shi a cikin tsaga mold yayin da yake zafi (ko mai tsanani zuwa wani taushi yanayi), da kuma matsawa iska da aka gabatar a cikin parison nan da nan bayan rufe mold don busa filastik parison. .Yana faɗaɗa kuma yana manne kusa da bangon ciki na mold, kuma bayan sanyaya da lalata, ana samun samfuran ramukan daban-daban.

An fara amfani da injin gyare-gyaren busa / tsari don samar da ƙananan ɗigon polyethylene a lokacin yakin duniya na biyu.A cikin ƙarshen 1950s, tare da haifuwar polyethylene mai girma da haɓaka na'urorin gyare-gyaren busa, an yi amfani da fasaha na na'ura mai laushi.Yawan kwantena masu fashe na iya kaiwa dubunnan lita, kuma wasu kwamfutoci ne ke sarrafa su.Filastik ɗin da suka dace da gyare-gyaren busa sun haɗa da polyethylene, polyvinyl chloride, polypropylene, polyester, da sauransu, kuma ana amfani da kwantena mara ƙarfi da aka samu a matsayin kwantena na masana'antu.

Gabatarwa ga hanyar gyare-gyaren gyare-gyaren busa mara kyau:

Saboda bambance-bambance a cikin albarkatun ƙasa, buƙatun sarrafawa, fitarwa da farashi, hanyoyin gyare-gyare daban-daban suna da fa'idodi daban-daban wajen sarrafa samfuran daban-daban.

Buga gyare-gyaren samfuran ramukan ya ƙunshi manyan hanyoyi guda uku:

1. Extrusion busa gyare-gyare: yafi amfani dashi don sarrafa parison mara tallafi;

2. Allurar busa gyare-gyare: galibi ana amfani da shi don sarrafa parison da ke da goyan bayan ƙarfe na ƙarfe;

3. Daidai bakin molding: gami da iyakancewar molding, allurar rigakafi - shimfidar kayayyaki guda biyu, suna iya haifar da farashin farashi da haɓaka aikin samarwa da haɓaka aikin samarwa.

Bugu da kari, akwai Multi-Layer busa gyare-gyaren, matsawa busa gyare-gyaren, tsoma shafi busa gyare-gyaren, kumfa busa gyare-gyaren, uku-girma gyare-gyaren gyare-gyaren, da dai sauransu Amma 75% na busa gyare-gyaren kayayyakin ne extrusion busa gyare-gyaren, 24% ne allura busa gyare-gyaren. , kuma 1% sune sauran nau'in gyare-gyare;Daga cikin duk samfuran gyare-gyaren busa, 75% na samfuran da aka daidaita su.A abũbuwan amfãni daga extrusion busa gyare-gyare ne high samar yadda ya dace, low kayan aiki kudin, fadi da zabin na kyawon tsayuwa da inji, da kuma disadvantages ne high scrap kudi, matalauta sake yin amfani da kuma amfani da datti, samfurin kauri iko, da kayan dispersibility.Bayan haka, wajibi ne don aiwatar da aikin datti.Amfanin yin gyare-gyaren allura shine cewa babu sharar gida a cikin tsarin sarrafawa, kuma kauri na bango na samfurin da tarwatsa kayan ana iya sarrafawa da kyau.Rashin hasara shi ne cewa kayan aikin gyare-gyaren suna da tsada kuma har zuwa wani lokaci kawai ya dace da ƙananan kayan da aka ƙera.

Yanayin tsari na gyare-gyaren busa mara kyau yana buƙatar cewa matsewar iskar da ke busawa cikin ƙoƙon ƙurawar dole ne ta kasance mai tsabta.Matsakaicin iska don yin gyare-gyaren allura shine 0.55 zuwa 1 MPa;matsa lamba ga extrusion busa gyare-gyare ne 0.2l zuwa 0.62 MPa, da kuma matsa lamba ga stretch busa gyare-gyaren sau da yawa ana bukatar ya zama babba kamar 4 MPa.A cikin ƙaddamar da robobi, ƙananan matsa lamba yana sa ƙarancin ciki na samfurin ya ragu, rarrabuwar damuwa ya fi dacewa, kuma ƙananan damuwa na iya inganta haɓaka, tasiri, lankwasawa da sauran kaddarorin samfurin.