Izizathu eziyinhloko zokuvela kwe "self sulphur" ngesikhathi sokubekwa kwezinto zenjoloba ezixubile yilezi:
(1) Kusetshenziswa ama-ejenti amaningi kakhulu afaka i-vulcanizing nama-accelerator;
(2) Umthamo omkhulu wokulayisha irabha, izinga lokushisa eliphezulu lomshini wokucwenga iraba, ukupholisa kwefilimu okwanele;
(3) Noma ukwengeza isulfure kusenesikhathi kakhulu, ukuhlakazeka okungalingani kwezinto zomuthi kubangela ukugcwala kwendawo kwama-accelerator nesibabule;
(4) Indawo yokupaka engafanele, njengezinga lokushisa elidlulele kanye nokungahambi kahle komoya endaweni yokupaka.
Indlela yokunciphisa isilinganiso se-Money ye-rubber blends?
I-Mooney ye-rubber blend ingu-M (1 + 4), okusho ukuthi i-torque edingekayo ukuze ifudumale kuma-degree angu-100 ngomzuzu we-1 futhi ijikeleze i-rotor imizuzu engu-4, okuwubukhulu bamandla avimbela ukujikeleza kwe-rotor. Noma yimaphi amandla anganciphisa ukujikeleza kwe-rotor anganciphisa i-Mooney. Izinto zokusetshenziswa zefomula zihlanganisa irabha yemvelo kanye nerabha yokwenziwa. Ukukhetha irabha yemvelo nge-Mooney ephansi noma ukwengeza ama-plasticizers amakhemikhali kufomula yenjoloba yemvelo (ama-plasticizers angokwenyama awasebenzi) kuyisinqumo esihle. Irabha yokwenziwa ngokuvamile ayiwengezi ama-plasticizer, kodwa ngokuvamile ingangeza amanye amafutha aphansi okuthiwa ama-dispersants noma ama-agent akhipha angaphakathi. Uma izidingo zokuqina zingaqinile, yiqiniso, inani le-stearic acid noma uwoyela lingandiswa; Uma inqubo, ingcindezi ye-bolt ephezulu inganyuswa noma izinga lokushisa lokukhipha lingakhuphuka ngokufanele. Uma izimo zivuma, izinga lokushisa lamanzi okupholisa lingehliswa, futhi i-Mooney yenhlanganisela yerabha ingehliswa.
Izinto ezithinta umphumela wokuhlanganisa we-mixer yangaphakathi
Uma kuqhathaniswa nokuxuba okuvulekile komshini wokugaya, ukuxuba okuxubene kwangaphakathi kunezinzuzo zesikhathi esifushane sokuxuba, ukusebenza kahle okuphezulu, izinga eliphezulu lemishini kanye ne-automation, ikhwalithi enhle yezinto zenjoloba, umfutho ophansi wokusebenza, ukusebenza okuphephile, ukulahleka okuncane kwezidakamizwa, kanye nezimo ezinhle zokuhlanzeka kwemvelo. Kodwa-ke, ukuchithwa kokushisa ekamelweni lokuxuba le-mixer yangaphakathi kunzima, futhi izinga lokushisa lokuxuba liphakeme futhi linzima ukulawula, okunciphisa izinga lokushisa elibucayi izinto zenjoloba futhi akufanelekile ukuxuba izinto zenjoloba ezinombala okhanyayo nezinto zenjoloba ezinezinhlobonhlobo ezivamile. izinguquko. Ngaphezu kwalokho, i-mixer yangaphakathi idinga ukuhlonyiswa ngamadivayisi ahambisanayo okukhipha ukuze kuxutshwe.
(1) Amandla okulayisha iglue
Inani elifanele leglue kufanele liqinisekise ukuthi izinto zenjoloba zingaphansi kokungqubuzana okukhulu kanye nokugunda ekamelweni lokuxuba, ukuze kuhlakazwe ngokulinganayo i-ejenti yokuxuba. Inani leglue elifakiwe lincike ezicini zemishini kanye nezici ze-glue material. Ngokuvamile, ukubala kusekelwe kumthamo ophelele wegumbi lokuxuba kanye ne-coefficient yokugcwalisa, ene-coefficient yokugcwalisa esukela ku-0.55 kuya ku-0.75. Uma imishini isetshenziswa isikhathi eside, ngenxa yokugqoka nokudiliza ekamelweni lokuxuba, i-coefficient yokugcwalisa ingasethwa inani eliphakeme, futhi inani leglue lingandiswa. Uma ukucindezela kwe-bolt ephezulu kuphezulu noma i-plasticity yezinto zokunamathisela iphezulu, inani lokunamathisela lingaphinde lenyuke ngokufanele.
(2) Ukucindezela kwebhawodi eliphezulu
Ngokwandisa ukucindezela kwe-bolt ephezulu, hhayi kuphela amandla okulayisha enjoloba angakhuliswa, kodwa futhi ukuxhumana nokucindezela phakathi kwezinto zenjoloba kanye nemishini, kanye naphakathi kwezingxenye ezihlukahlukene ngaphakathi kwezinto zenjoloba, kungaba ngokushesha futhi ngempumelelo kakhudlwana, ukusheshisa inqubo yokuxuba i-ejenti ehlanganisiwe ibe yinjoloba, ngaleyo ndlela ifinyeze isikhathi sokuxuba futhi ithuthukise ukusebenza kahle kokukhiqiza. Ngesikhathi esifanayo, kungase futhi kunciphise ukushelela kwezinto endaweni yokuxhumana yemishini, kwandise ukucindezelwa kwe-shear ezintweni zenjoloba, kuthuthukise ukuhlakazwa kwe-ejenti ehlanganisayo, futhi kuthuthukise ikhwalithi yezinto zenjoloba. Ngakho-ke, okwamanje, izinyathelo ezinjengokwandisa ububanzi be-top bolt air duct noma ukwandisa ukucindezela komoya kuvame ukuthathwa ukuze kuthuthukiswe ukusebenza kahle kokuxuba kanye nekhwalithi yenjoloba exubile ku-mixer yangaphakathi.
(3) Isivinini se-rotor kanye nesimo sesakhiwo se-rotor
Ngesikhathi senqubo yokuxuba, isivinini se-shear se-rubber silingana ngokuqondile nesivinini se-rotor. Ukuthuthukisa isivinini se-shear sezinto zenjoloba kunganciphisa isikhathi sokuxuba futhi kuyisilinganiso esiyinhloko sokuthuthukisa ukusebenza kahle komxube wangaphakathi. Njengamanje, ijubane le-mixer yangaphakathi liye landa kusukela ku-20r / min yasekuqaleni kuya ku-40r / min, 60r / min, futhi kuze kufike ku-80r / min, ukunciphisa umjikelezo wokuxuba kusuka ku-12-15 min kuya emfushane kakhulu ye-l-1.5 imiz. Eminyakeni yamuva, ukuze kuhlangatshezwane nezidingo zobuchwepheshe bokuxuba, i-multi speed noma isivinini esiguquguqukayo sangaphakathi sisetshenziselwa ukuxuba. Ijubane lingashintshwa nganoma yisiphi isikhathi ngokusho kwezici zezinto zenjoloba kanye nezidingo zenqubo ukuze kuzuzwe umphumela omuhle kakhulu wokuxuba. Ukuma kwesakhiwo se-rotor ye-mixer yangaphakathi kunomthelela omkhulu enqubweni yokuxuba. I-protrusions ye-elliptical rotor ye-mixer yangaphakathi iye yanda kusukela kokubili kuya kwezine, okungadlala indima ephumelelayo ekuxubeni kwe-shear. Ingathuthukisa ukusebenza kahle kokukhiqiza ngo-25-30% futhi inciphise ukusetshenziswa kwamandla. Eminyakeni yamuva nje, ngaphezu kokwakheka kwe-elliptical, izixube zangaphakathi ezinokwakheka kwe-rotor ezifana nonxantathu namasilinda nazo zisetshenzisiwe ekukhiqizeni.
(4) Ukuxuba izinga lokushisa
Phakathi nenqubo yokuxuba ye-mixer yangaphakathi, kukhona ukushisa okukhulu okukhiqizwa, okwenza kube nzima ukukhipha ukushisa. Ngakho-ke, impahla yenjoloba ishisa ngokushesha futhi inokushisa okuphezulu. Ngokuvamile, izinga lokushisa lokuxuba lisukela ku-100 kuya ku-130 ℃, futhi kuhlanganisa izinga lokushisa eliphezulu ku-170 kuya ku-190 ℃ nakho kuyasetshenziswa. Le nqubo isetshenziswe ekuxubeni irabha yokwenziwa. Izinga lokushisa lokukhipha ngesikhathi sokuxuba kancane ngokuvamile lilawulwa ku-125 kuya ku-135 ℃, futhi phakathi nokuxuba okusheshayo, izinga lokushisa lokukhipha lingafinyelela ku-160 ℃ noma ngaphezulu. Ukuxuba kanye nokushisa okuphezulu kakhulu kuzonciphisa isenzo se-shear mechanical ku-compound yerabha, okwenza ukuxuba kungalingani, futhi kuzoqinisa ukuqhekeka kwe-oxidative eshisayo yama-molecule enjoloba, ukunciphisa izakhiwo ezingokomzimba nezomshini ze-compound yerabha. Ngesikhathi esifanayo, kuzophinde kubangele ukubophezela kwamakhemikhali amaningi kakhulu phakathi kwerabha ne-carbon black ukuze kukhiqizwe ijeli eningi kakhulu, kunciphise izinga lepulasitiki lenhlanganisela yenjoloba, kwenze indawo yenjoloba ibe mahhulu, kubangele ubunzima ekuhlanganiseni i-calendering kanye ne-extrusion.
(5) Ukulandelana komthamo
Inhlanganisela yepulasitiki kanye nenhlanganisela kamama kufanele yengezwe kuqala ukuze kwakhiwe yonke, bese kwenezelwa amanye ama-compounding agents ngokulandelana. Izithambisi eziqinile nezidakamizwa ezincane zengezwa ngaphambi kokwengeza izihlungi ezifana ne-carbon black ukuqinisekisa isikhathi esanele sokuxutshwa. Izinto ezithambisa uketshezi kufanele zengezwe ngemva kokwengeza i-carbon black ukugwema ukuhlangana kanye nobunzima bokuhlakazeka; Ama-accelerator amakhulu nesibabule kwengezwa ngemva kokupholisa emshinini wepuleti eliphansi, noma kusixhumi sangaphakathi ngesikhathi sokuxutshwa kwesibili, kodwa izinga lokushisa lokuphuma kwawo kufanele lilawulwe ngaphansi kuka-100 ℃.
(6) Isikhathi sokuxuba
Isikhathi sokuxuba sincike ezicini ezihlukahlukene ezifana nezici zokusebenza ze-mixer, inani lerabha elilayishiwe, kanye nefomula yezinto zenjoloba. Ukwandisa isikhathi sokuxuba kungathuthukisa ukuhlakazeka kwe-ejenti yokuxuba, kodwa isikhathi eside sokuxuba singaholela kalula ekuxubeni okungaphezulu futhi kuthinte izici ze-vulcanization zezinto zenjoloba. Njengamanje, isikhathi sokuxuba se-XM-250/20 mixer yangaphakathi imizuzu eyi-10-12.
Isikhathi sokuthumela: May-27-2024
