I-Phenolic Resin

I-Phenolic resin ibizwa nangokuthibakelite, eyaziwa nangokuthi i-bakelite powder.Ekuqaleni into ekhanyayo engenambala (emhlophe) noma ephuzi ngokuphuzi, imakethe ivame ukufaka ama-agent ombala ukuze ibonakale ibomvu, iphuzi, imnyama, iluhlaza okotshani, i-brown, eluhlaza okwesibhakabhaka neminye imibala, futhi iyimbudumbudu kanye nempushana.Imelana ne-asidi ebuthakathaka kanye ne-alkali ebuthakathaka, izobola uma kune-asidi eqinile futhi igle uma kune-alkali eqinile.Incibilika ku-acetone, amanzi, utshwala nezinye izinyibilikisi eziphilayo.Itholakala nge-polycondensation ye-phenolic aldehyde noma okuphuma kuyo.I-solid phenolic resin iyinto ephuzi, esobala, e-amorphous blocky, ibomvu ngenxa ye-phenol yamahhala, isilinganiso esithile samandla adonsela phansi sebhizinisi sicishe sibe ngu-1.7, esincibilika kalula otshwaleni, esinganyibiliki emanzini, sizinze emanzini, i-asidi ebuthakathaka nesisombululo se-alkali esibuthakathaka.Kuyi-resin eyenziwe nge-polycondensation ye-phenol ne-formaldehyde ngaphansi kwezimo ze-catalyst, i-neutralization kanye nokugeza ngamanzi.Ngenxa yokukhethwa kwe-catalyst, ingahlukaniswa ngezinhlobo ezimbili: i-thermosetting ne-thermoplastic.I-Phenolic resin inokumelana ne-asidi okuhle, izakhiwo zemishini kanye nokumelana nokushisa, futhi isetshenziswa kakhulu kubunjiniyela bokulwa nokugqwala, izinto zokunamathisela, izinto ezibambezela ilangabi, ukukhiqiza amasondo okugaya nezinye izimboni.

I-Phenolic resin powder iwuhlobo lwe-thermoplastic phenolic resin eyakhiwe yi-polycondensation ye-phenol ne-formaldehyde endaweni ene-acidic.Ingancibilika ku-ethanol futhi ibe i-thermosetting ngokungeza i-urotropine engu-6-15%.Ingabunjwa ibe ngu-150°C futhi unamandla athile emishini.kanye nezakhiwo zokuvikela ugesi.

Isici esiyinhloko se-phenolic resin ukumelana nokushisa okuphezulu, futhi ingakwazi ukugcina ubuqotho bayo besakhiwo kanye nokuzinza kwe-dimensional ngisho namazinga okushisa aphezulu kakhulu.Ngakho-ke, ama-phenolic resins asetshenziswa emikhakheni yokushisa ephezulu, njengezinto eziphikisayo, izinto zokungqubuzana, izinto zokunamathisela kanye nezimboni ze-Foundry.

Ukusetshenziswa okubalulekile kwe-phenolic resin kunjenge-binder.Ama-phenolic resins ahlukahlukene futhi ahambisana nezinhlobonhlobo zama-organic and inorganic fillers.Ama-phenolic resins aklanywe kahle aphuma ngokushesha okukhulu.Futhi ngemva kokuxhumanisa, inganikeza amandla adingekayo emishini, ukumelana nokushisa kanye nezakhiwo zikagesi zamathuluzi abrasive, izinto eziphikisayo, izinto zokungqubuzana kanye ne-bakelite.

Ama-phenolic resins ancibilika emanzini noma ama-phenolic resins ancibilika ngotshwala asetshenziselwa ukumilisa iphepha, indwangu kakotini, ingilazi, i-asbestos nezinye izinto ezifanayo ukuze zinikeze amandla okusebenza, izici zikagesi, njll. Izibonelo ezijwayelekile zihlanganisa ukugqunywa kukagesi kanye nokukhiqizwa kwemishini yokulambisa, i-clutch. amadiski kanye nephepha lokuhlunga lezihlungi zezimoto.

Izici ze-phenolic resin:

Ukusebenza okuphezulu kwezinga lokushisa: Isici esibaluleke kakhulu se-phenolic resin ukumelana nokushisa okuphezulu, ngisho namazinga okushisa aphakeme kakhulu, angakwazi ukugcina ubuqotho bawo besakhiwo kanye nokuzinza kwe-dimensional.

Amandla ebhondi: Ukusetshenziswa okubalulekile kwe-phenolic resin kunjenge-binder.Ama-phenolic resins ahlukahlukene futhi ahambisana nezinhlobonhlobo zama-organic and inorganic fillers.

Izinga eliphakeme le-carbon residue: Ngaphansi kwezimo zegesi engasebenzi enezinga lokushisa elingaba ngu-1000°C, ama-phenolic resins azokhiqiza izinsalela zekhabhoni eziphezulu, ezisiza ekugcineni ukusimama kwesakhiwo sama-phenolic resins.

Intuthu ephansi kanye nobuthi obuphansi: Uma kuqhathaniswa nezinye izinhlelo ze-resin, isistimu ye-phenolic resin inezinzuzo zentuthu ephansi kanye nobuthi obuphansi.Endabeni yokusha, uhlelo lwe-phenolic resin olukhiqizwa ifomula yesayensi luzobola kancane ukuze lukhiqize i-hydrogen, ama-hydrocarbon, umhwamuko wamanzi nama-carbon oxides.Intuthu ekhiqizwa ngesikhathi sokubola incane uma kuqhathaniswa, kanti ubuthi buphansi.

Ukumelana namakhemikhali: I-phenolic resin exhunywe ngokuphambana ingamelana nokubola kwanoma yiziphi izinto zamakhemikhali.Okufana nophethiloli, i-petroleum, utshwala, i-glycol, igrisi nama-hydrocarbon ahlukahlukene.

Ukwelashwa kokushisa: Ukwelashwa kokushisa kuzokwandisa izinga lokushisa lokuguqulwa kwengilazi ye-resin ephulukisiwe, engathuthukisa kakhulu izakhiwo ze-resin.

Ukugwedla: Igwebu le-Phenolic wuhlobo lwepulasitiki eyigwebu etholwe yi-phenolic resin enegwebu.Uma kuqhathaniswa negwebu le-polystyrene, igwebu le-polyvinyl chloride, igwebu le-polyurethane nezinye izinto ezazibusa imakethe ekuqaleni kwesigaba sokuqala, inokusebenza okuhle kakhulu okukhethekile ngokuya nge-flame retadancy.