Qhov sib txawv tseem ceeb ntawm nylon thiab polyamide yog cov nylon yog cov khoom siv hluavtaws, hos polyamides tuaj yeem yog ntuj lossis hluavtaws.
Nylon thiab polyamides yog cov ntsiab lus zoo sib xws vim tias ob qho khoom siv yog polymers, thiab nylon yog hom polyamide.
Nylon yog dab tsi?
Nylon yog hom polyamide uas yog hluavtaws. Nws yog ib pawg ntawm cov polymers uas suav nrog cov yas. Peb tuaj yeem hu cov polymers no ua cov khoom siv thermoplastic vim yog cov khoom siv thermal. Qee cov tswv cuab ntawm pawg no suav nrog nylon 6. Nylon 6, 6, nylon 6.8. etc.
Daim duab 01: Nylon Structure hauv daim duab
Hom polymer no belongs rau pawg polymer condensation vim yog txoj kev sib txuas. Nylon khoom yog tsim los ntawm condensation polymerization. Ntawm no, cov monomers siv hauv kev tsim cov nylon yog diamines thiab dicarboxylic acids. Lub condensation polymerization ntawm ob monomers no yuav tsim peptide bonds. Ib qho dej molecule yog tsim los ntawm txhua daim ntawv cog lus peptide raws li cov khoom lag luam.
Feem ntau ntawm cov ntaub ntawv nylon yog tsim los ntawm cov pob txha symmetrical thiab yog ib nrab-crystalline. Qhov no ua rau nylons zoo fibers. Lub npe ntawm daim ntawv nylon yog muab raws li tus naj npawb ntawm carbon atoms tam sim no nyob rau hauv diamine thiab dicarboxylic acid monomers. Piv txwv li, nyob rau hauv nylon 6, 6, muaj rau carbon atoms nyob rau hauv lub dicarboxylic acid thiab rau carbon atoms nyob rau hauv lub diamine.
Feem ntau, nylons yog cov ntaub ntawv tawv. Cov khoom no muaj tshuaj zoo thiab thermal kuj. Nylons tuaj yeem siv rau hauv qhov chaw kub kub. Qhov kub siab tshaj plaws uas nylon siv tau yog ntawm 185oC. Cov iav hloov pauv kub ntawm nylon yog li 45 o C. Lub iav hloov pauv kub ntawm ib lub polymer yog qhov kub ntawm lub polymer hloov los ntawm ib qho nyuaj, iav khoom mus rau ib tug mos, rubbery khoom.
YPolyamide yog dab tsi?
Polyamides yog ib hom khoom siv polymer uas muaj ntau qhov rov ua dua ntawm cov pab pawg amide. Cov no yog cov thermoplastic elastomers uas muaj kev ua tau zoo tshaj plaws los ntawm lawv cov kev pabcuam siab kub, kev laus thaum tshav kub kub, thiab hnyav hnyav. Tsis tas li ntawd, cov polymers no muaj cov qauv siab thiab cov khoom cuam tshuam, tsis tshua muaj coefficient ntawm kev sib txhuam, thiab kev puas tsuaj siab. Nylon yog hom polyamide feem ntau siv thiab siv dav. Niaj hnub no, nylon polymer yog ib qho ntawm cov tseem ceeb tshaj plaws thiab dav siv polymers hauv Tebchaws Meskas.
Daim duab 02: Cov qauv tshuaj ntawm Polyamides
Polyamides muaj pawg amide, uas yog pawg polar. Cov pawg polar no tso cai rau polyamides los tsim hydrogen bonds ntawm chains, yog li txhim kho cov interchain attraction. Cov cuab yeej ntawm cov khoom siv polymer no txhim kho cov khoom siv ntawm polyamide. Piv txwv li, nylon muaj hloov pauv aliphatic carbon pawg hauv cov saw hlau uas txhim kho cov txheej txheem ntawm cov khoom los ntawm kev txo cov yaj viscosity. Lub zog thiab nruj ntawm cov khoom no raug txo thaum nce cov pa roj carbon atoms ntawm cov kev sib txuas ntawm amide. Yog li ntawd, qhov ntev ntawm cov pob txha hydrocarbon yog cov cuab yeej tseem ceeb uas txiav txim siab qhov ua tau zoo ntawm cov khoom siv polyamide. Vim lub polarity ntawm pawg amide, polar solvents, feem ntau yog dej, tuaj yeem cuam tshuam rau polyamides.
Muaj ob hom polyamides: aliphatic thiab aromatic polyamides. Nylon tuaj yeem yog aliphatic lossis semi-aromatic polyamide. Cov kev siv tseem ceeb ntawm polyamides muaj xws li radiator header tso tsheb hlau luam nyob rau hauv lub tshuab cua txias, keyboards, connectors, ignition Cheebtsam, sensors thiab lub cev muaj zog qhov chaw nyob rau hauv nws pib hluav taws xob systems, log trims, throttle li qub, engine npog, tshav kub resistant under-bonnet Cheebtsam, airbrake tubing, thiab lwm yam.
Qhov txawv ntawm Nylon thiab Polyamide yog dab tsi?
Nylon thiab polyamides yog ob hom khoom siv polymer. Qhov sib txawv tseem ceeb ntawm nylon thiab polyamide yog tias nylon yog cov khoom siv hluavtaws, hos polyamides tuaj yeem yog ntuj lossis hluavtaws. Ntxiv mus, nylon muaj kev tiv thaiv zoo tiv thaiv ya raws thiab nag thaum polyamide tsis muaj zog, thiab me ntsis hydrophobic.
Cov hauv qab no infographic teev qhov sib txawv ntawm nylon thiab polyamide hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Nylon vs Polyamide
Nylon thiab polyamides yog cov ntsiab lus zoo sib xws vim tias nylon yog hom polyamide, thiab ob qho khoom siv yog polymers. Qhov sib txawv tseem ceeb ntawm nylon thiab polyamide yog cov nylon yog cov khoom siv hluavtaws, hos polyamides tuaj yeem yog ntuj lossis hluavtaws.
