Qhov Tseem Ceeb Qhov txawv - Elastomer vs Polymer
Polymer chemistry koom nrog kev kawm ntawm cov molecules loj heev uas tau ua los ntawm cov me me rov ua dua. Cov chav rov ua dua no yog hu ua monomers thiab txuas ua ke los tsim cov molecule loj, polymer. Txij li cov no yog cov molecules loj, ntau yam tuaj yeem pom thaum kawm txog cov polymers. Elastomer yog ib hom polymer. Qhov sib txawv tseem ceeb ntawm elastomer thiab polymer yog tias lub polymer yog ib qho loj molecule uas yog tsim nrog me me hu ua monomers whereas elastomer yog ib yam tshwj xeeb ntawm polymer uas muaj elasticity.
Elastomer yog dab tsi?
Ib elastomer yog hom polymer. Nws muaj cov yam ntxwv tseem ceeb ntawm elasticity. Elastomers yog cov khoom zoo li roj hmab thiab feem ntau yog amorphous polymers (tsis muaj cov qauv txiav txim). Cov cuab yeej elastic ntawm elastomers tshwm sim vim tsis muaj zog txaus Van Der Waal ntawm cov saw hlau polymer lossis cov qauv tsis zoo txaus. Yog hais tias lub zog ntawm cov saw hlau polymer tsis muaj zog, nws muab cov polymer yooj. Ib yam li ntawd, yog tias cov polymer muaj cov qauv tsis sib haum, nws tso cai rau cov polymer hloov tau yooj yim dua. Tab sis txhawm rau kom cov polymer hloov tau yooj yim, nws yuav tsum muaj qee qhov kev sib txuas sib txuas.
Ib elastomer zoo tsis dhau cov yas ntws. Hauv lwm lo lus, cov duab ntawm elastomer yuav hloov pauv thaum muaj kev ntxhov siab, tab sis nws yuav tau txais nws cov duab qub thaum muaj kev ntxhov siab. Ntuj roj hmab vulcanization txheej txheem yog ib qho piv txwv zoo rau qhov no. Ntuj roj hmab ib leeg nyhav dhau los ntawm cov yas ntws. Vulcanization yog cov txheej txheem uas cov sulfur cross-links tau qhia rau cov roj hmab ntuj. Qhov no ua rau txo qis ntawm cov yas ntws thiab tso cai rau cov polymer rov qab los rau nws cov duab qub thaum ncab thiab tso tawm.
Elastomers muaj nyob rau hauv ob hom xws li thermoplastic thiab thermoset elastomers.
- Thermoplastic elastomers - cov elastomers yaj thaum rhuab
- Thermoset elastomers - cov no tsis yaj thaum rhuab
Daim duab 01: Teb ntawm Ob Hom Elastomers rau Stretching
YDab tsi yog Polymer?
YA polymer yog ib qho loj heev molecule uas yog tsim los ntawm cov me me hu ua monomers. Cov monomers no tau teem ntau zaus, yog li lawv hu ua rov ua haujlwm. Monomers txuas nrog covalent bonds. Ib tug monomer yuav tsum muaj ob lub ntsiab lus nyob rau hauv nws sab thiaj li yuav khi nrog ob lwm monomers. Cov monomers kuj muaj qhov taw tes uas lwm tus monomer tuaj yeem khi nrog. Ib yam li ntawd, ntau tus monomers yuav khi nrog ib leeg dua. Qhov no ua rau cov saw hlau polymer. Cov txheej txheem no hu ua polymerization. Polymer chains tuaj yeem tuav lub zog sib txuas ntawm cov saw hlau polymer. Qhov no hu ua cross-linking. Nws yuav ua rau muaj ntau yam sib txawv ntawm cov polymer molecules. Cov no yog macromolecules. Polymers tau muab faib ua ntau pawg raws li lawv cov qauv, lub cev muaj zog lossis lawv cov kev siv thev naus laus zis. Raws li cov khoom ntawm lub cev, cov polymers tau muab faib ua cov thermosets, elastomers, thiab thermoplastics. Cov polymers no tuaj yeem yog amorphous lossis semi-crystalline.
Qhov txawv ntawm Elastomer thiab Polymer yog dab tsi?
YElastomer vs Polymer |
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| Ib elastomer yog hom polymer uas muaj cov yam ntxwv tshwj xeeb | Polymer yog ib qho loj heev molecule ua los ntawm cov rov ua dua units. |
| Lub cev muaj zog | |
| Ib elastomer muaj cov khoom tshwj xeeb: elasticity | Polymers muaj cov khoom sib txawv xws li elasticity thiab plasticity. |
| Morphology | |
| Ib elastomer yog amorphous polymer. | Polymers tuaj yeem yog amorphous lossis semi-crystalline. |
| Elasticity | |
| Elastomers tuaj yeem tiv taus siab elastic deformation. | Lwm cov polymers tawg. |
| Kev hloov pauv | |
| Elastomers hloov tau yooj yim. | Lwm cov polymers nruj. |
Summary – Elastomer vs Polymer
Polymers yog ib qho kev sau dav dav ntawm cov organic molecules, uas tau muab faib ua ntau pawg raws li cov khoom thiab lawv siv. Elastomer yog ib pab pawg uas tau categorized raws li nws lub cev. Qhov sib txawv tseem ceeb ntawm elastomer thiab polymer yog tias ib lub polymer yog ib qho loj molecule uas yog tsim nrog me me hu ua monomers whereas elastomer yog ib yam tshwj xeeb ntawm polymer uas muaj elasticity.
Download PDF Version of Elastomer vs Polymer
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li cov ntawv sau tseg. Thov download PDF version ntawm no Qhov txawv Ntawm Elastomer thiab Polymer
