Qhov sib txawv tseem ceeb ntawm cov resin thiab polymer yog cov resins muaj qhov hnyav me me, thaum cov polymers muaj qhov hnyav molecular.
Monomers yog tsim cov blocks ntawm polymers. Lawv yog cov yooj yim los yog complex molecules nrog ob daim ntawv cog lus los yog lwm pab pawg neeg ua hauj lwm zoo li -OH, -NH2, -COOH, thiab lwm yam. Cov unsaturated ob daim ntawv cog lus los yog ua hauj lwm pab pawg neeg yog yuav tsum tau nyob rau hauv cov txheej txheem polymerization Thaum ob peb monomers txuas rau tsim ib lub polymer. Cov polymers no yog ntuj lossis hluavtaws. Synthetic compounds yog tsim los ua cov khoom sib xyaw ua ke, thiab tam sim no lawv tau siv dav. Resin yog lub ntuj monomeric compound, uas kuj muaj cov hluavtaws sib piv.
Resin yog dab tsi?
Resin yog cov khoom siv organic uas ib txwm tsim hauv cov nroj tsuag. Qhov no yog cov kua nplaum uas muaj xim ntshiab lossis xim av tsaus. Hauv qee cov nroj tsuag, cov kua txiv hmab txiv ntoo muaj cov resins. Txawm hais tias cov no yog kua thiab khov, lawv tuaj yeem ua kom tawv thaum kho nrog tshuaj. Qib hardness txawv nyob ntawm cov nroj tsuag uas tsim cov resin. Cov khoom no tsis yaj hauv dej, tab sis nws yaj hauv cawv. Muaj ntau chav kawm ntawm resin, thiab lawv cov tshuaj muaj pes tsawg leeg sib txawv.
Feem ntau cov resins muaj terpenes, uas yog volatile. Vim yog terpenes, resins tau txais tus yam ntxwv tsw. Feem ntau, bicyclic terpenes tshwm sim hauv cov resins xws li alpha-pinene, beta-pinene, delta-3 carene thiab sabinene. Tsis tas li ntawd, muaj monocyclic (limonene) thiab tricyclic terpenes (sesquiterpenes, longifolene) ib yam nkaus.
Daim duab 01: Resin in Pine
Tsis tas li ntawd, muaj qee cov khoom tsis muaj volatile hauv me me, uas yog lub luag haujlwm ua rau cov resin tuab thiab nplaum. Peb tuaj yeem cais cov neeg sib xyaw no hauv cov resin los ntawm kev faib ua feem.
Muaj ntau daim ntawv thov rau resins. Tib neeg tau siv cov cog resins rau ntau txhiab xyoo. Piv txwv li, lawv muaj txiaj ntsig zoo li cov tshuaj tsw qab, kua roj vanish, lacquer, jewelery thiab lwm yam. Tam sim no cov kws tshawb fawb tau pom ib txoj hauv kev los tsim cov resins synthetically thiab. Synthetic resins yog ib qho tseem ceeb raws li ib tug monomer, los tsim polymers. Synthetic resins muaj qhov ruaj khov thiab zoo ib yam li cov khoom siv ntuj tsim. Lawv muaj txiaj ntsig zoo hauv kev tsim cov yas thiab xim; lawv kuj muaj peev xwm tsim tau cov khoom uas yog tsim los ntawm natural resins.
YDab tsi yog Polymer?
Polymers yog cov molecules loj, nrog rov ua cov qauv ntawm cov monomers. Cov monomers khi nrog ib leeg ntawm covalent bonds los tsim ib lub polymer. Lawv muaj qhov hnyav molecular thiab muaj ntau dua 10,000 atoms. Lawv cov txheej txheem synthesis, uas peb hu ua polymerization, suav nrog kev tsim cov saw hlau ntev dua.
Muaj ob hom polymers tseem ceeb, nyob ntawm lawv txoj kev sib txuas. Yog hais tias cov monomers muaj ob daim ntawv cog lus ntawm carbons, los ntawm kev sib txuas ntxiv, peb tuaj yeem tau txais cov polymers. Cov polymers no hu ua ntxiv polymers. Hauv qee qhov kev cuam tshuam polymerization, thaum ob lub monomers sib koom ua ke, ib qho me me zoo li dej raug tshem tawm. Cov polymers no yog condensation polymers.
Polymers muaj qhov sib txawv ntawm lub cev thiab tshuaj lom neeg ntau dua li lawv cov monomers. Ntxiv mus, raws li tus naj npawb ntawm rov qab units hauv polymer, lawv cov khoom sib txawv. Muaj ntau cov polymers tam sim no nyob rau hauv ib puag ncig, thiab lawv ua lub luag haujlwm tseem ceeb heev.
Daim duab 02: Yas yog Polymer
Synthetic polymers kuj tau siv dav rau ntau lub hom phiaj. Polyethylene, polypropylene, PVC, nylon, thiab, Bakelite yog ib co hluavtaws polymers. Thaum tsim cov khoom siv hluavtaws, cov txheej txheem yuav tsum tau tswj xyuas kom tau txais cov khoom xav tau. Synthetic polymers yog ib qho tseem ceeb xws li cov nplaum, lubricants, xim, zaj duab xis, fibers, yas khoom, thiab lwm yam.
Qhov txawv ntawm Resin thiab Polymer yog dab tsi?
Resin yog cov khoom siv organic uas tsim ntuj tsim hauv cov nroj tsuag thaum cov polymers yog cov molecules loj nrog rov ua cov qauv ntawm monomers. Qhov sib txawv tseem ceeb ntawm resin thiab polymer yog cov resins muaj qhov hnyav me me, thaum cov polymers muaj qhov hnyav molecular. Tsis tas li ntawd, resin yog cov kua nplaum uas muaj cov xim ntshiab lossis xim av tsaus thaum cov polymers tuaj yeem yog cov khoom los yog kua.
Summary – Resin vs Polymer
Resin thiab polymer yog cov khoom siv organic. Qhov sib txawv tseem ceeb ntawm resin thiab polymer yog cov resins muaj qhov hnyav me me, thaum cov polymers muaj qhov hnyav molecular loj.
