Kwinkqubo yemveliso yee-nonwovens eziphothiweyo, izinto ezahlukeneyo zinokuchaphazela iipropathi ezibonakalayo zeemveliso.
Uhlalutyo lwemiba ephambili echaphazela iipropathi zelaphu luncedo ukulawula iimeko zenkqubo ngokuchanekileyo kwaye ufumane iPP entle ephothiweyo engaphothiweyo enomgangatho olungileyo ukulingana nokusebenza kwabathengi.
Uhlobo lwe-1.Polypropylene: isalathisi esinyibilikayo kunye nobunzima be-molecular
Iimpawu eziphambili zomgangatho we-polypropylene ziyi-molecular weight, i-molecular weight distribution, isotacticity, i-melt index kunye nomxholo womlotha.
Abathengisi bepolypropylene bakwintlambo yekhonkco leplastiki, bebonelela ngemathiriyeli ekrwada yepolypropylene kumabakala ahlukeneyo kunye neenkcukacha.
Ukwenza i-spunbond i-nonwoven, ubunzima be-polypropylene molecular ngokuqhelekileyo kuluhlu lwe-100,000-250,000.Nangona kunjalo, kubonakaliswe ukuba ipropathi enyibilikayo isebenza kakuhle xa ubunzima bemolekyuli bumalunga ne-120000. Isantya esiphezulu sokujikeleza siphezulu kweli nqanaba.
Isalathisi se-Melt yiparameter ebonisa iimpawu ze-rheological zokunyibilika.Isalathisi sokunyibilika se-PP ye-particle ye-spunbond idla ngokuba phakathi kwe-10 kunye ne-50.
Isalathisi esincinci sokunyibilika kukuba, i-fluidity imbi kakhulu, incinci umlinganiselo wokuyila, kwaye ubukhulu be-fiber ubukhulu obuphantsi kwemeko yemveliso efanayo yokunyibilika kwi-spinneret, ngoko ke i-nonwovens ibonisa iimvakalelo zezandla ezinzima.
Xa i-melt index inkulu, i-viscosity ye-melt iyancipha, ipropati ye-rheological iza ngcono, kwaye ukuchasana kokuqulunqwa kunciphisa.Ngaphantsi kwemeko efanayo yokusebenza, ukuqulunqwa okuphindaphindiweyo kwanda.Ngokunyuka kweqondo le-orientation degree of macromolecules, amandla okuphulwa kwe-nonwoven aya kuphuculwa, kwaye ubungakanani bomsonto buya kuncitshiswa, kwaye ilaphu liya kuziva lithambile ngakumbi. .
2. Ubushushu bokujikeleza
Ukusetwa kobushushu obujikelezayo kuxhomekeke kwisalathiso sokunyibilika kwezinto ezikrwada kunye neemfuno zeempawu ezibonakalayo zeemveliso.Ukuphakama kwesalathiso sokunyibilika kufuna ubushushu obuphezulu bokusonta, kwaye ngokuphambeneyo.Ubushushu obujikelezayo buhambelana ngokuthe ngqo kwi-viscosity yokunyibilika.Ngenxa ye-viscosity ephezulu yokunyibilika, kunzima ukujikeleza, okukhokelela ekuqhekekeni, ukuqina okanye ubunzima bomsonto, obuchaphazela umgangatho weemveliso.
Ngoko ke, ukwenzela ukunciphisa i-viscosity yokunyibilika kunye nokuphucula iimpawu ze-rheological zokunyibilika, ukwandisa ubushushu kwamkelwa ngokubanzi.Ubushushu obujikelezayo bunempembelelo enkulu kwisakhiwo kunye neempawu zemicu.
Xa iqondo lobushushu elijikelezayo liphezulu, amandla okuqhawuka aphezulu, ukophuka kobude buncinci, kwaye ilaphu liziva lithambile ngakumbi.
Ngokwesiqhelo, iqondo lobushushu lokujikeleza lidla ngokubeka i-220-230 ℃.
3. Izinga lokupholisa
Kwinkqubo yokwenziwa kwee-nonwovens eziphothiweyo, izinga lokupholisa lomsonto linempembelelo enkulu kwiimpawu zomzimba ze-nonwovens eziphothiweyo.
Ukuba i-fiber ipholile ngokucothayo, ifumana isakhiwo se-crystal monoclinic esizinzile, esingenakulungelelaniswa ne-fibers ukuzoba.Ngoko ke, kwinkqubo yokubumba, indlela yokunyusa umthamo womoya opholileyo kunye nokunciphisa ubushushu begumbi lokujikeleza idla ngokusetyenziselwa ukuphucula umgangatho womoya. ukomelela kunye nokunciphisa ubude belaphu eliphothiweyo elingaphothiweyo.Ukongeza, umgama wokupholisa womsonto unxulumene ngokusondeleyo neempawu zayo.Kwimveliso yamalaphu asontiweyo angalukwanga, umgama wokupholisa uphakathi kwe-50 cm kunye ne-60 cm.
4. IiMeko zokuyila
Iqondo lokuqhelaniswa nekhonkco lemolekyuli kwi-filament yinto ebalulekileyo echaphazela ukwandiswa kwe-monofilament.
Ukufana kunye namandla okuqhawuka kwee-nonwovens eziphothiweyo zinokuphuculwa ngokunyusa umthamo womoya wokufunxa.Nangona kunjalo, ukuba umthamo womoya wokufunxa mkhulu kakhulu, kulula ukuqhawula umsonto, kwaye uyilo lunzima kakhulu, ukuqhelaniswa kwepolymer kudla ngokugqibeleleyo, kunye nekristallinity yepolymer iphezulu kakhulu, eya kunciphisa i-polymer. amandla empembelelo kunye nobude ngexesha lekhefu, kunye nokunyusa ukukrala, okukhokelela ekuncipheni kwamandla kunye nobude belaphu elingalukwanga.Kuyabonakala ukuba amandla kunye nokwandiswa kwee-nonwovens eziphothiweyo zonyuka kwaye zehla rhoqo ngokunyuka komthamo womoya wokufunxa.Kwimveliso yokwenyani, inkqubo kufuneka ihlengahlengiswe ngokweemfuno kunye nemeko eyiyo ukuze kufumaneke iimveliso ezikumgangatho ophezulu.
5. Iqondo lobushushu elishushu
Emva kokuba iwebhu yenziwe ngokuzoba, ikhululekile kwaye kufuneka iboshwe ngokuqengqeleka okushushu.Into ephambili kukulawula ubushushu kunye noxinzelelo.Umsebenzi wokufudumeza kukuthambisa kunye nokunyibilikisa i-fiber.Umyinge weentsinga ezithambileyo nezidityanisiweyo zimisela iipropathi ezibonakalayo zelaphu lePP spunbond elingalukwanga.
Xa iqondo lobushushu liqala phantsi kakhulu, kuphela inxalenye encinci yeefayili ezinobunzima obuphantsi be-molecular iyathambisa kwaye inyibilike, iifiber ezimbalwa ziboshwe kunye phantsi koxinzelelo. ubude bukhulu, kwaye ilaphu livakala lithambile kodwa linokwenzeka ukuba libe yifuzz;
Xa iqondo lokushisa elitshisayo linyuka, inani le-fiber ethambileyo kunye neyinyibilikile iyanda, i-fiber web idibaniswe ngokusondeleyo, akukho lula ukutyibilika.Amandla okuqhawuka kwelaphu elingalukwanga ayanda, kwaye ukunweba kusekukhulu.Ngaphezu koko, ngenxa yobudlelwane obuqinileyo phakathi kwemicu, ukunyuswa kwanda kancinci;
Xa iqondo lobushushu linyuka kakhulu, amandla eenonwovens aqalisa ukuhla, ubude buyancipha kakhulu, uva ukuba ilaphu liyaqina kwaye libe brittle, kwaye amandla akrazuka ayancipha. ubushushu obufunekayo ukuthambisa nokunyibilika, ngoko ke ubushushu bokuziqengqeleka kufuneka bube sezantsi.Ngokuhambelanayo, kwizinto ezishinyeneyo, iqondo lobushushu elishushu liphezulu.
6. Uxinzelelo olushushu oluqengqelekayo
Kwinkqubo yokudibanisa i-hot rolling, umsebenzi we-hot rolling mill line pressure kukwenza ukuba i-fibers ethambileyo kunye neyinyibilike idibanise ngokusondeleyo, ikhulise ukudibanisa phakathi kweefayili, kwaye yenza ukuba i-fibers ingabi lula.
Xa uxinzelelo lomgca we-hot-rolled line luphantsi, uxinano lwefayibha kwindawo yokucinezela luhlwempuzekile, ukukhawuleza kwe-fiber bonding akukho phezulu, kwaye ukudibanisa phakathi kweentsinga kubi.Ngeli xesha, isandla sivane ngelaphu eliphothiweyo elingaphothiweyo lithambile ngokwentelekiso, i-elongation ngexesha lekhefu likhulu ngokwentelekiso, kodwa amandla okuqhawuka aphantsi ngokwentelekiso;
ngokuchaseneyo, xa uxinzelelo lomgca luphezulu ngokwentelekiso, ukuva kwesandla selaphu eliphothiweyo elingaphothiweyo linzima ngokwentelekiso, kwaye ulwando ngexesha lekhefu lusezantsi kodwa amandla okuqhawuka aphezulu.Ukumiselwa koxinzelelo olushushu olujikelezayo kunento eninzi yokwenza ubunzima kunye nobukhulu beempahla ezingalukwanga.Ukuze uvelise iimveliso ezihlangabezana neemfuno zokusebenza, kuyimfuneko ukukhetha uxinzelelo olufanelekileyo olushushu olushushu ngokweemfuno.
Ngamafutshane, iimpawu ezibonakalayo zamalaphu angalukwanga zisisiphumo sokudityaniswa kwezinto ezininzi.Nobunzima belaphu obufanayo, ukusetyenziswa kwelaphu okwahlukileyo kunokufuna inkqubo yobugcisa eyahlukileyo. Yiyo loo nto umthengi ecelwe ukusetyenziswa kwelaphu.Iyakunceda umthengisi. cwangcisa imveliso ngenjongo ethile kwaye unike umthengi othandekayo elona laphu lanelisekileyo lingalukwanga.
Njengomvelisi weminyaka eli-17, iFuzhou Heng Hua New Material Co.,Ltd.baqinisekile babonelele ngelaphu ngokwemfuno yabathengi.Siye sathumela kumazwe ahlukeneyo kunye nemimandla kwaye siye sanconywa kakhulu ngabasebenzisi.
Wamkelekile ukudibana nathi kwaye uqalise intsebenziswano yexesha elide kunye neHenghua Nonwoven!
Ixesha lokuposa: Apr-16-2021
