1.Ukucwenga kwepulasitiki
Incazelo ye-plasticization: Isenzakalo lapho irabha ishintsha isuka entweni enwebekayo iye ekubeni yipulasitiki ngaphansi kwethonya lezici zangaphandle ibizwa ngokuthi i-plasticization.
(1)Inhloso yokucwenga
a.Nika amandla irabha eluhlaza ukuze ifinyelele izinga elithile lepulasitiki, elifanele izigaba zakamuva zokuxuba nezinye izinqubo
b.Hlanganisa ipulasitiki yerabha eluhlaza futhi uqinisekise ngisho nekhwalithi yezinto zenjoloba
(2)Ukunqunywa kwenhlanganisela yepulasitiki edingekayo: I-Mooney engaphezu kuka-60 (i-theoretical) i-Mooney ngaphezu kwama-90 (okwangempela)
(3)Umshini wokucwenga wepulasitiki:
a. Vula isigayo
Izici: Izinga eliphezulu labasebenzi, ukusebenza kahle kokukhiqiza okuphansi, izimo zokusebenza ezimbi, kodwa kuyavumelana nezimo, ngokutshalwa kwezimali okuphansi, futhi kufanelekile ezimweni ezinezinguquko eziningi Isilinganiso sesivinini sezigubhu ezimbili zomshini ovulekile: ngaphambili kuya emuva (1:1.15) -1.27)
Izindlela zokusebenza: Indlela yokucwenga yepulasitiki emincane, indlela yokucwenga ipulasitiki yokugoqa, indlela yohlaka lokukhuphuka, indlela ye-plasticizer yamakhemikhali
Isikhathi sokusebenza: Isikhathi sokubumba akufanele sidlule imizuzu engama-20, futhi isikhathi sokupaka kufanele sibe amahora angama-4-8.
b.Isihlanganisi sangaphakathi
Izici: Ukusebenza kahle kokukhiqiza okuphezulu, ukusebenza okulula, ukushuba okuphansi kwabasebenzi, kanye nepulasitiki efanayo. Kodwa-ke, amazinga okushisa aphezulu angabangela ukwehla kwezakhiwo zomzimba kanye nemishini yezinto zenjoloba
Indlela yokusebenza: Ukukala → Ukuphakela → Ukwenza ipulasitiki → Ukukhipha → Ukuhlehlisa → Ukucindezela → Ukupholisa nokukhipha → Isitoreji
Isikhathi sokusebenza: imizuzu eyi-10-15 Isikhathi sokupaka: amahora angama-4-6
(4)Irabha eyenziwe ngepulasitiki njalo
Izinto zenjoloba ezivame ukudinga ukulolongwa zihlanganisa i-NR, i-NBR eqinile, irabha eqinile, kanye nalezo ezinesilinganiso se-Mooney esingu-90 noma ngaphezulu.
2.Ukuxuba
Incazelo yokuxuba ukufaka izithasiselo ezihlukahlukene ku-rubber ukuze wenze i-rubber ehlanganisiwe
(1)Vula i-mixer ukuze uyixube
a.Irola yokugoqa: Goqa irabha eluhlaza kurola yangaphambili futhi ube nenqubo emfushane yokushisa ngaphambi kwemizuzu engu-3-5.
b.Inqubo yokudla: Engeza izithasiselo ezidinga ukungezwa ngokulandelana okuthile. Lapho ungeza, qaphela umthamo weglue enqwabelene. Okuncane kunzima ukukuhlanganisa, kuyilapho okuningi kuzoginqika futhi kungabi lula ukukuhlanganisa
Ukulandelana kokuphakelayo: irabha eluhlaza → i-ejenti esebenzayo, insiza yokucubungula → isulfure → ukugcwalisa, i-ejenti ethambisayo, i-disperant → insiza yokucubungula → i-accelerator
c.Inqubo yokucwenga: ingaxuba kangcono, ngokushesha, futhi ngokulinganayo
Indlela yommese: a. Indlela yommese otshekile (indlela yemimese eyisishiyagalombili) b. Indlela yokugoqa unxantathu c. Indlela yokusebenza yokusonta d. Indlela ye-Gluing (indlela yommese ohambayo)
d.Ifomula yokubala umthamo wokulayisha wesigayo esivulekile ngu-V=0.0065 * D * L, lapho u-V - ivolumu D ingububanzi be-roller (cm) kanye no-L ubude be-roller (cm)
e.Ukushisa kwe-roller: 50-60 degrees
f.Isikhathi sokuxuba: Awukho umthethonqubo othize, kuncike ekwazini komsebenzisi
(2)Ukuxuba kwangaphakathi:
a.Ukuxutshwa kwesiteji esisodwa: Ngemva kwesigaba esisodwa sokuxuba, inqubo yokuhlanganisa imi kanje: irabha eluhlaza → impahla encane → i-ejenti eqinisayo → isithambisa → ukukhishwa kwerabha → ukungezwa kwesibabule ne-accelerator emshinini wokucindezela ithebhulethi → ukukhulula → ukupholisa nokupaka
b.Ukuxuba kwesigaba sesibili: Ukuxuba ngezigaba ezimbili. Isigaba sokuqala yirabha eluhlaza → into encane → i-ejenti eqinisayo → isithambisa → ukukhipha injoloba → ukucindezela ithebhulethi → ukupholisa. Isigaba sesibili irabha kamama → isulfure ne-accelerator → ukucindezela ithebhulethi → ukupholisa
(3)Izinkinga zekhwalithi evamile ngerabha exubile
a.I-compound agglomeration
Izizathu eziyinhloko yilezi: ukucwengwa okwanele kwerabha eluhlaza; I-roller pitch ngokweqile; Umthamo wokunamathela ngokweqile; Ukushisa kwe-roller ngokweqile; Inhlanganisela eyimpuphu iqukethe izinhlayiya ezimahhadla noma amaqoqo;
b.Amandla adonsela phansi athile ngokweqile noma anganele noma ukusatshalaliswa okungalingani
Isizathu: Isisindo esingalungile se-ejenti ehlanganisayo, ukuxutshwa okungalungile, ukweqiwa, ukwengeza okungalungile noma ukushiywa ngesikhathi sokuxuba.
c.Futha isithwathwa
Ikakhulukazi ngenxa yokusetshenziswa ngokweqile kwezithasiselo ezithile, ezidlula ukuncibilika kwazo enjolobeni ekamelweni lokushisa. Uma kukhona ukugcwaliswa okumhlophe kakhulu, izinto ezimhlophe nazo zizofafazwa ngaphandle, okubizwa ngokuthi i-powder spraying
d.Ukuqina kuphezulu kakhulu, kuphansi kakhulu, akulingani
Isizathu siwukuthi ukukala kwe-vulcanizing agents, ama-accelerators, softeners, ama-ejenti aqinisayo, nerabha eluhlaza akunembile, futhi kubangelwa ukwengeza okungalungile noma okugejiwe, okuholela ekuxubeni okungalingani kanye nobunzima obungalingani.
e.Ukushiswa: Isenzakalo sakuqala se-vulcanization yezinto zenjoloba
Isizathu: Inhlanganisela engalungile yezithasiselo; Ukusebenza okungalungile kokuxuba irabha; Ukupholisa nokupaka okungafanele; Imithelela yesimo sezulu, njll
3.I-sulfurization
(1)Ukushoda kwezinto
a.Umoya ophakathi kwesikhunta nerabha awukwazi ukukhishwa
b.Isisindo esinganele
c.Ukucindezela okunganele
d.I-fluidity engalungile yezinto zenjoloba
e.Ukushisa kwesikhunta okwedlulele kanye nezinto zenjoloba ezishile
f.Ukushiswa kwangaphambi kwesikhathi kwento yerabha (impahla efile)
g.Ukushuba kwezinto ezinganele nokugeleza okunganele
(2)Amabhamuza nama-pores
a.I-vulcanization enganele
b.Ukucindezela okunganele
c.Ukungcola noma amabala kawoyela kusikhunta noma impahla yerabha
d.Izinga lokushisa lesikhunta se-vulcanization liphezulu kakhulu
e.Kwengezwe i-ejenti encane kakhulu, isivinini se-vulcanization sihamba kancane kakhulu
(3)Isikhumba esinzima nokuqhekeka
a.Isivinini se-vulcanization sishesha kakhulu, futhi ukugeleza kwerabha akwanele
b.Isikhunta esingcolile noma amabala anamathelayo
c.Ukuzihlukanisa kakhulu noma umenzeli wokukhulula
d.Ukushuba okunganele kokunamathelayo
(4)Ukuqhekeka kokudilizwa komkhiqizo
a.Ukushisa kwesikhunta okweqile noma ukuchayeka kwesibabule isikhathi eside
b.Umthamo oweqile we-ejenti ye-vulcanizing
c.Indlela yokudiliza ayilungile
(5)Kunzima ukucubungula
a.Amandla okudabula omkhiqizo mahle kakhulu (njenge-adhesive high tensile). Lokhu kucubungula okunzima kubonakaliswa ukungakwazi ukudabula ama-burrs
b.Amandla omkhiqizo mancane kakhulu, abonakala njengamaphethelo ama-brittle, angase adabule umkhiqizo ndawonye
Isikhathi sokuthumela: Apr-16-2024
