Thermoplastic Polymer

Lub thermoplastic polymer yog ib hom yas uas tuaj yeem yaj thiab rov ua dua ntau zaus yam tsis muaj kev hloov pauv tshuaj lom neeg tseem ceeb. Cov cuab yeej no yog vim lub fact tias thermoplastic polymers yog tsim los ntawm ntev chains ntawm repeating units hu ua monomers, uas yog tuav ua ke los ntawm qaug zog intermolecular rog.

Thermoplastic polymers tau siv dav hauv ntau lub lag luam, suav nrog tsheb, kev tsim kho, ntim khoom, thiab kev kho mob. Lawv nyiam dua lwm hom yas vim tias lawv yooj yim rau txheej txheem thiab pwm, thiab lawv tuaj yeem tsim tau ntau yam ntawm tus nqi qis.

Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm thermoplastic polymer yog lawv lub peev xwm los molded rau hauv cov duab thiab cov qauv. Qhov no yog ua tiav los ntawm cua sov lub polymer mus rau qhov kub siab tshaj nws qhov melting point, uas ua rau cov intermolecular rog tsis muaj zog thiab cov polymer ua kua ntau dua. Thaum cov polymer tau mus txog qhov xav tau sib xws, nws tuaj yeem ua rau hauv cov duab uas xav tau siv ntau txoj hauv kev, suav nrog kev txhaj tshuaj molding, extrusion, thiab tshuab molding.

Lwm qhov zoo ntawm cov thermoplastic polymer yog lawv lub peev xwm los siv thiab rov siv dua. Vim tias lawv tuaj yeem yaj thiab rov ua dua ntau zaus yam tsis muaj kev hloov pauv tshuaj tseem ceeb, thermoplastic polymers tuaj yeem siv dua thiab siv los ua cov khoom tshiab. Qhov no txo ​​cov pov tseg thiab txuag cov peev txheej, ua rau cov thermoplastic polymers xaiv ib puag ncig zoo dua li lwm hom yas.

Muaj ntau ntau hom thermoplastic polymers, txhua tus muaj nws tus kheej cov khoom thiab cov yam ntxwv. Qee qhov feem ntau siv thermoplastic polymers suav nrog polyethylene, polypropylene, polystyrene, thiab polyvinyl chloride (PVC).

• Polyethylene yog lub teeb yuag, yoog raws, thiab cov yas ruaj khov uas feem ntau siv rau hauv kev ntim khoom, kev tsim kho, thiab kev siv tsheb. Nws tiv taus cov dej noo thiab tshuaj lom neeg, ua rau nws zoo tagnrho rau siv nyob rau hauv ib puag ncig uas muaj cov xwm txheej no.
• Polypropylene yog cov yas uas muaj zog thiab nruj uas feem ntau siv hauv tsheb, ntim khoom, thiab kev tsim kho. Nws muaj lub siab melting point, uas ua rau nws resistant rau tshav kub thiab tshuaj.
• Polystyrene yog ib lub teeb yuag thiab nruj yas uas feem ntau siv hauv ntim, rwb thaiv tsev, thiab cov khoom siv. Nws yog ib qho zoo insulator thiab resistant rau ya raws thiab tshuaj.
• PVC yog cov yas ntau yam uas feem ntau siv hauv kev tsim kho, kev kho mob, thiab cov khoom siv. Nws yog yoog raws, ruaj, thiab tiv taus cov dej noo thiab tshuaj lom neeg.

Hauv cov ntsiab lus, cov thermoplastic polymers yog ib chav kawm ntawm cov ntaub ntawv yas uas tuaj yeem yaj thiab rov ua dua ntau zaus yam tsis muaj kev hloov pauv tshuaj lom neeg tseem ceeb. Lawv tau siv dav hauv ntau qhov kev lag luam vim lawv qhov yooj yim ntawm kev ua haujlwm, muaj peev xwm ua tau molded rau hauv cov duab nyuaj, thiab rov ua dua tshiab. Muaj ntau ntau hom thermoplastic polymers, txhua tus muaj nws tus kheej cov khoom thiab cov yam ntxwv.