Bakelite yog phenolic resin.Phenolic resin (PF) yog ib hom kev lag luam yas khoom.Cov ntaub ntawv raw ntawm phenolic resin ntau lawm yog phenol thiab aldehyde, thiab phenol thiab formaldehyde feem ntau yog siv.Lawv yog polymerized los ntawm condensation cov tshuaj tiv thaiv nyob rau hauv catalysis ntawm acid, puag thiab lwm yam catalysts.Muaj ob hom kev lag luam ntau lawm: txheej txheem qhuav thiab txheej txheem ntub.
Raws li kev ua ntawm cov catalysts sib txawv, phenol thiab aldehyde tuaj yeem tsim tau ob hom phenolic resins: ib qho yog thermoplastic phenolic resin, lwm yam yog thermosetting phenolic resin.Cov qub tuaj yeem kho tau rau hauv cov qauv thaiv los ntawm kev ntxiv tus neeg saib xyuas thiab cua sov, thaum tom kawg tuaj yeem kho tau rau hauv cov qauv thaiv los ntawm cua sov yam tsis tau ntxiv tus neeg sawv cev kho.
Thermoplastic phenolic resin thiab thermosetting phenolic resin tsuas yog siv los ntawm kev sib pauv network tsim los ntawm kev kho.Txoj kev kho yog qhov txuas ntxiv ntawm cov duab polycondensation thiab tsim cov khoom zoo.Cov txheej txheem no txawv ntawm qhov melting thiab curing ntawm cov thermoplastics.Ob lub cev thiab cov txheej txheem tshuaj yog irreversible.
Phenolic resin tuaj yeem txhaj tshuaj molded zoo ib yam li cov thermoplastic.PF rau kev txhaj tshuaj moldingyuav tsum tau zoo fluidity, tuaj yeem molded nyob rau hauv qis txhaj tshuaj, siab thermal nruj, ceev hardening ceev, zoo nto gloss ntawm yas qhov chaw, yooj yim demoulding, thiab tsis muaj pwm muaj kuab paug.Txawm li cas los xij, kev txhaj tshuaj molding kuj muaj nws qhov tsis zoo.Piv txwv li, cov yaj yog txwv los ntawm hom muab tub lim, yog li nws tsis tsim nyog siv cov ntxig ntxiv los ua cov khoom yas.Ntau lub rooj vag thiab cov channel tsis tuaj yeem rov ua dua tom qab kho, thiab tsuas yog muab pov tseg.
Hauv ib lo lus, thermoplastic phenolic resin tuaj yeem tsim los ntawm cov tshuab txhaj tshuaj zoo tib yam, tab sis cov txheej txheem raug tswj nruj me ntsis.Thermosetting phenolic resin yuav tsum tau tsim los ntawm lub tshuab tshwj xeeb txhaj tshuaj molding rau phenolic resin, thiab cov pwm kuj tau txais cov qauv tsim tshwj xeeb.
Nws yog dav siv nyob rau hauvhluav taws xob accessories, qhov (sockets), lub teeb tuav,sandwich tshuab plhaub, thiab lwm yam;Txawm li cas los xij, nws qhov kev ua tau zoo tsis yooj yim thiab cov txheej txheem ntxhov siab tuaj yeem txwv nws txoj kev loj hlob.Nrog rau qhov tshwm sim ntawm lwm cov yas, cov khoom bakelite tsis yooj yim pom tam sim no.Txawm hais tias cov khoom bakelite yuav tsum tau ua kom sov rau molding, lub sijhawm ua haujlwm ntev dua li cov yas zoo tib yam, thiab cov pwm coj loj dua, uas yuav tsum muaj ntau dua rau cov hlau, tab sis vim nws txoj haujlwm zoo ntawm cov khoom siv raw, nws yog tseem yog qhov hloov pauv rau ntau qhov chaw yas.
Post lub sij hawm: Lub Xya hli ntuj-15-2022