Qhov sib txawv tseem ceeb ntawm cov khoom sib xyaw thiab cov khoom siv ceramics yog cov khoom sib xyaw uas pheej yig thiab muaj qhov tsis zoo, qhov sib txawv ntawm cov ceramics yog tawv thiab kim.
Hauv kev xav tau kev lag luam, cov khoom sib xyaw thiab cov ceramics muaj ntau yam kev siv sib txawv. Lawv txawv ntawm ib leeg, feem ntau yog nyob ntawm tus nqi thiab tus nqi zoo.
Dab tsi yog Composite Resins?
Composite resins yog cov khoom siv uas tsim los ntawm ob lossis ntau theem sib txawv uas sib xyaw ua ke los tsim cov khoom zoo tshaj plaws rau cov khoom sib txawv. Lo lus no muaj kev siv hauv cov ntaub ntawv tshawb fawb thiab kev kho hniav. Feem ntau, ob theem sib txawv yog tsim los ntawm kev sib xyaw ntawm cov khoom, muaj cov qauv sib txawv thiab cov khoom ua ke.
Nws muaj peb yam tseem ceeb ntawm cov khoom sib xyaw: matrix, muab tub lim thiab coupling tus neeg sawv cev. Tsis tas li ntawd, muaj qee yam khoom siv xws li cov neeg pib thiab cov accelerators, pigments, thiab lwm yam. Xav txog cov resin matrix ntawm cov khoom sib xyaw, nws muaj Bis-GMA (bisphenol-A glyceril methacrylate), UDMA (urethane dimethyacrylate), thiab TEGDMA (triethylene glycol). dimethacrylate). Yog hais tias cov khoom sib xyaw muaj tsuas yog cov resin matrix, ces peb hu nws ua ib qho uas tsis tau sau.
Daim duab 01: Kev Kho Hniav
Lub matrix ntawm cov khoom sib xyaw yog cov theem uas dhau los ua polymerization los ua ib qho khoom loj. Nws yog qhov tsis muaj zog tshaj plaws thiab qhov tsawg tshaj plaws hnav-tiv taus theem ntawm cov cob, thiab nws tuaj yeem nqus dej, stain thiab discolor thiab. Ntxiv mus, los ntawm kev txo qis cov ntsiab lus muab tub lim, peb tuaj yeem tau txais cov khoom siv sib xyaw kom muaj zog. Cov khoom muab tub lim peb tuaj yeem siv rau cov khoom sib xyaw muaj xws li silica hais, quartz, thiab iav. Thaum cov khoom sib xyaw ua ke muaj ob qho tib si matrix thiab fillers, ces peb tuaj yeem hu nws ua cov resin.
YCeramics yog dab tsi?
Ceramic yog cov khoom tsis muaj zog, tsis yog xim hlau uas tau tawv tawv ntawm qhov kub thiab txias. Muaj cov qauv atomic sib txawv ntawm cov khoom siv no uas tuaj hauv cov ntaub ntawv xws li crystalline, non-crystalline lossis ib nrab crystalline. Txawm li cas los xij, cov khoom no feem ntau muaj cov qauv crystalline atomic.
Daim duab 02: Kev Siv Ceramic hauv Pottery
Ntxiv mus, peb tuaj yeem faib cov ceramics raws li ib txwm muaj lossis qib siab ceramic-raws li lawv daim ntawv thov. Feem ntau ntawm lawv yog opaque tsuas yog iav. Silica, av nplaum, limestone, magnesia, alumina, borates, zirconia, thiab lwm yam, yog cov khoom siv raw rau ceramics.
Tsis tas li ntawd, ceramic yog lub zog-resistant, siab zog, puas-resistant khoom. Txawm li cas los xij, lawv cov hluav taws xob conductivity tsis zoo. Tsis tas li ntawd, peb tuaj yeem tsim cov khoom siv no los ntawm kev tsim cov tshuaj txhuam hniav uas muaj cov hmoov zoo heev ntawm cov khoom siv raw thiab dej rau hauv cov duab muab thiab tom qab ntawd los ntawm sintering. Vim yog cov txheej txheem tsim khoom, ceramic yog me ntsis kim dua iav. Ntxiv mus, tej yam ntuj tso ceramics xws li pob zeb, av nplaum, thiab plooj (porcelain) kuj tseem siv tau rau hauv lub neej txhua hnub.
Qhov txawv ntawm Composite Resins thiab Ceramics yog dab tsi?
Composite resins thiab ceramic yog cov khoom siv tseem ceeb. Composite resins yog cov khoom siv uas tau tsim los ntawm ob lossis ntau lub sijhawm sib txawv uas sib xyaw ua ke los tsim cov khoom zoo tshaj plaws rau cov khoom siv thaum lub sij hawm ceramic yog ib qho khoom siv tsis zoo, cov khoom tsis yog xim hlau uas tau hardened ntawm qhov kub thiab txias. Qhov sib txawv tseem ceeb ntawm cov khoom sib xyaw thiab cov ceramics yog cov khoom sib xyaw ua ke yog pheej yig thiab tsis tshua muaj zog, thaum ceramics yog tawv thiab kim.
Ntxiv mus, cov khoom sib xyaw ua ke yog ua los ntawm cov matrix, muab tub lim thiab coupling tus neeg sawv cev thaum cov ceramic yog ua los ntawm cov hlau oxides thiab cov hlau hlau nrog rau qee cov khoom tsis zoo xws li carbon, nitrogen, thiab sulfur. Tsis tas li ntawd, cov khoom sib xyaw yog siv rau hauv cov ntaub ntawv tshawb fawb thiab kev kho hniav thaum ceramic feem ntau yog siv hauv cov tais diav, tsim cov cib, vuas, cement, thiab iav.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm cov khoom sib xyaw thiab cov ceramics hauv daim ntawv tabular.
Summary – Composite Resins vs Ceramics
Composite resins txawv ntawm ceramics, feem ntau ntawm cov nqi thiab kev siv. Qhov sib txawv tseem ceeb ntawm cov khoom sib xyaw thiab cov khoom siv ceramics yog cov khoom sib xyaw ua ke yog pheej yig thiab muaj qhov tsis zoo, thaum ceramics yog tawv thiab kim.
