Video: PMMA resin yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Polymethyl methacrylate ( PMMA ), ib tug hluavtaws resin Ua los ntawm polymerization ntawm methyl methacrylate. Plastic pob tshab thiab nruj, PMMA feem ntau yog siv los hloov iav hauv cov khoom xws li shatterproof windows, skylights, illuminated kos npe, thiab aircraft canopies.
Tom qab ntawd, lub ntsiab lus ntawm PMMA yog dab tsi?
PMMA . Los ntawm Vangie Beal Luv luv rau polymethylmethacrylate, lossis ntau dua kom raug Poly (methyl methacrylate ), PMMA yog cov khoom siv acrylic ntshiab uas tuaj yeem siv los hloov iav. PMMA feem ntau yog siv nyob rau hauv qhov chaw uas yuav tsum tau shatter-proof iav los yog qhov rais, xws li cov puck barriers pom nyob rau hauv hockey rinks.
Qhov thib ob, qhov txawv ntawm PMMA thiab acrylic yog dab tsi? Nto Hardness - PMMA yog ib qho tawv, ruaj thiab hnav lub cev thermoplastic. Qhov ceev ntawm acrylic thaj tsam nruab nrab 1.17-1.20g / cm33 uas yog ib nrab tsawg tshaj qhov ntawd ntawm iav Nws muaj kev khawb zoo heev thaum piv rau lwm cov pob tshab xws li Polycarbonate, txawm li cas los xij tsawg dua iav.
Ua kom pom qhov no, PMMA ua li cas?
Nws yog feem ntau tsim los ntawm emulsion polymerization, kua polymerization & bulk polymerization. PMMA Cov khoom siv yog ester ntawm methacrylic acid, uas belongs rau tsev neeg acrylic tseem ceeb ntawm resins. Nws yog feem ntau tau los ntawm propylene (compound refined los ntawm lub teeb feem ntawm cov roj crude) siv nyob rau hauv cov txheej txheem ntau lawm.
Puas yog PMMA muaj kev nyab xeeb?
Kev nyab xeeb Kev Ntsuas / Cov Teeb Meem: Poly (methyl methacrylate) ( PMMA ) yog xam nyab xeeb , thiab raug ntsuas raws li qhov muaj kev phom sij tsawg los ntawm Cosmetics Database. Nws sau cov kev txhawj xeeb tias nws tuaj yeem ua rau mob carcinogen, ua rau muaj kev tsis haum tshuaj, immunotoxicity, thiab lub cev toxicity.
Pom zoo:
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