I-Silicon Dioxide Yezinga Lenjoloba: Isidingo Sobuchwepheshe Nemakethe Emboni Yamathayi Ezimoto YaseBrazil

I-Silica Dioxide Yezinga Lerabha: Isidingo Sobuchwepheshe Nemakethe Embonini Yamathayi Ezimoto E-Brazil

Imboni yezimoto iyinsika yomnotho waseBrazil, futhi umthamo wokukhiqiza ugxile esifundeni sase-ABC eSão Paulo, Minas Gerais naseParaná. Imboni esekelayo yamathayi nemikhiqizo yenjoloba isebenzisa inani elikhulu le-silica dioxide eyenziwe ngokuhlunga njenge-ejenti yokuqinisa, futhi ukusabalala kwamathayi anokumelana nokugingqika okuphansi nokonga amandla kuyaqhubeka nokukhulisa isidingo.

1. Inani Elibalulekile Le-Silica Ekwakhiweni Kwenjoloba

Ngokwesiko, i-carbon black yayiyi-ejenti eyinhloko yokuqinisa enjolobeni. Kusukela ngawo-1990, i-silica eyenziwe ngokuhlunga isetshenziswa kabanzi ekwakhiweni kwe-tread, ngezinzuzo ezingenakufaniswa:

• Ukumelana nokugingqika okuphansi: Kunciphisa ukusetshenziswa kukaphethiloli wemoto, kuhambisana nesidingo semakethe ngemuva kwentengo ephezulu kawoyela eBrazil

• Ukubamba okunamandla emanzi: Kuthuthukisa ukuphepha kokushayela ngezinsuku zezimvula, kuvumelana nezimo zesimo sezulu esinemvula saseBrazil

• Ukumelana okungcono nokuguga nokubhobozwa: Kwandisa impilo yokusebenza kwethayi

• Ukuncipha kokushisa okukhulu: Kwehlisa izinga lokushisa kwesondo ngesikhathi sokushayela futhi kwandisa impilo yesondo

2. Izimo Zokusetshenziswa Kwasekhaya eBrazil

• Amasondo ezimoto zomuntu: Ingxenye enkulu yokusetshenziswa, ngokwanda okuqhubekayo kokungena kwe-silica kumafomula amasondo asebenza kahle kakhulu

• Amathayi ezimoto zokuhweba: Imikhumbi yezimpahla ifuna ukonga uphethiloli kanye nebanga elide, okuholela ekufuneni i-silica

• Imikhiqizo yenjoloba yezimboni: Amapayipi, amabhande, izivalo, izicathulo zenjoloba, njll.

• I-silicone rubber ekhethekile: Izingxenye ze-elastomer ezikhethekile zezimboni nezimoto

3. Izinkomba Eziyisisekelo Zobuchwepheshe be-Silica Yezinga Lenjoloba

• Indawo yokugcwala ethize ye-BET: Ngokuvamile 100–200 m²/g kumathayi abagibeli

• Usayizi wezinhlayiya eziyisisekelo: 10–50 nm

• Inani lokumunca uwoyela we-DBP: lilawulwa ngokunembile ukuze kuhlangatshezwane nezidingo zokusebenza kokucubungula

• Inani le-pH: line-asidi encane kuya kokulinganayo, aliphazamisi uhlelo lokuvulcanization

Ukuze kuthuthukiswe amandla okuxhumana phakathi kwe-silica nerabha, ama-silane coupling agents avame ukusetshenziswa ekwakhiweni ukuze kwandiswe ngakumbi umphumela wokuqinisa.

4. Umbono Wemakethe

Ngokuqala kancane kwemboni yezimoto zikagesi zaseBrazil, isidingo samasondo anokumelana nokugingqika okuphansi sizokhuphuka nakakhulu — ukumelana nokugingqika kwesondo kuthinta ngqo ibanga lezimoto zikagesi. Ngasikhathi sinye, izindinganiso eziqinile zokukhishwa kwegesi ze-Proconve zizophoqa izinkampani zamasondo ukuthi zithuthukise amafomula futhi zandise ukusetshenziswa kwe-silica.

Isiphetho

I-silica dioxide ene-precipitated isiphenduke into yokugcizelela ewumgogodla wemboni yamathayi nenjoloba yaseBrazil, ngokuhambisana nezimo zemboni yomhlaba wonke zokonga amandla nokuphepha. Ezimayini zamathayi, ukuthuthukisa izinhlanganisela nge-silica yekhwalithi ephezulu kuyindlela ewumgogodla yokuthuthukisa ukuncintisana komkhiqizo nokuphendula ekuthuthukisweni kwezomthetho.

(I-Dioxide ye-Silicon yase-Rubber namathayi: Isidingo nobuchwepheshe emkhakheni wezimoto waseBrazil

Imboni yezimoto yaseBrazil ingenye yezinsika zomnotho kazwelonke, nemifektri egxile e-ABC yaseSão Paulo, eMinas Gerais naseParaná. Kanye nayo, umkhakha wamathayi nezinto zenjoloba zisebenzisa amanani amakhulu e-silicon dioxide ehlehlisiwe njenge-ejenti yokuqinisa, okushukunyiswa ukuthambekela kwamathayi anokumelana okuphansi nokugingqika kanye nokusebenza kahle kwamandla.

1. Kungani i-silica kumakhemikhali enjoloba?

Ngokwesiko, i-carbon black yayiyi-ejenti eyinhloko yokuqinisa kumathayi. Kusukela ngawo-1990, i-silica ehlehlisiwe yaqala ukusetshenziswa kabanzi, ikakhulukazi endaweni yokuhamba, ngoba inikeza izinzuzo eziyingqayizivele:

• Ukumelana okuphansi nokugingqika: kunciphisa ukusetshenziswa kukaphethiloli wezimoto, okuyisidingo esiya sibaluleka kakhulu njengoba izintengo zikaphethiloli zikhuphuka eBrazil

• Ukubambelela okungcono endaweni emanzi: kwandisa ukuphepha kwamathayi ezimweni zezulu ezinemvula, okuyisici esivamile engxenyeni enkulu yezwe laseBrazil

• Ukuqina okukhulu: kuthuthukisa ukumelana nokuguga nokusikwa

• Ukukhiqizwa okuncane kokushisa: kwehlisa izinga lokushisa kwesondo lapho lisebenza, kwandise impilo yalo yokusebenza

2. Izicelo emakethe yaseBrazil

• Amathayi okuhamba: ingxenye enkulu kakhulu, ngokusetshenziswa okukhulayo kwe-silica ekwakhiweni okuphezulu kokusebenza

• Amathayi amaloli namabhasi: emikhumbini efuna ukonga uphethiloli kanye nebanga elide

• Izinto zenjoloba yobuchwepheshe: amapayipi, amabhande, izivalo kanye nezicathulo zenjoloba

• Ama-silicone nama-elastomer akhethekile: ezicelweni zezimboni nezimoto

3. Izici zobuchwepheshe ze-silica yokwenziwa kwerabha

• Indawo yokugcwala ye-BET: ngokuvamile phakathi kuka-100 no-200 m²/g kumathayi abagibeli

• Usayizi wezinhlayiya eziyisisekelo: kusuka ku-10 kuya ku-50 nm

• Ukumunca kwe-DBP: kulawulwa ukuze kulungiswe ukusebenza kahle kokuhlanganiswa

• pH: kancane asidi kuya kokungathathi hlangothi, ukuze kungaphazamisi uhlelo lokuvulcaniza

Ukuze kuthuthukiswe ukusabalalisa nokusebenzisana nenjoloba, amafomula amaningi asebenzisa ama-silane njengezinto zokuxhumanisa, okwandisa izinzuzo ze-silica.

4. Amathuba emakethe

Ngokushintshela ezimotweni zikagesi eBrazil, isidingo samathayi anokumelana okuphansi nokugingqika sizokhula nakakhulu, ngoba ibanga elingahanjwa amabhethri lithinteka ngqo ukusebenza kahle kwamathayi. Ngaphezu kwalokho, imithetho eqinile yokukhishwa kwezinto ezimotweni (Proconve) ikhuthaza ukusetshenziswa kobuchwepheshe obunciphisa ukusetshenziswa kukaphethiloli.

Isiphetho

I-dioxide ye-silicon ene-precipitated isiqinise isikhundla sayo njengento ebalulekile embonini yamathayi nenjoloba yaseBrazil, ngokuhambisana nezimo zomhlaba wonke zokusebenza kahle kwamandla nokuphepha. Kubakhiqizi, ukutshala imali ezinhlanganisela ezithuthukisiwe nge-silica yekhwalithi kuyindlela yokuthola ukuncintisana emakethe.)