Polystyreneyog ib tug hluavtaws polymer uas feem ntau tshwm raws li ib tug ntshiab los yog milky dawb khoom polymer nrog zoo thermal stability, lub zog thiab hardness. Polystyrene yog ib qho tsis muaj kuab lom polymer nrog cov qauv ntoo, thiab nws cov khoom siv tshuaj lom neeg thiab cov khoom muaj zog muaj nws tus yam ntxwv. yog ib tug hluavtaws polymer widhttps://www.bloomtechz.com/synthetic-chemical/api-researching-only/polystyrene-powder-cas-83-07-8.htmlely siv hauv kev tsim cov yas, foams, thiab lwm yam kev siv. Nws yog polymerized los ntawm styrene monomer thiab muaj siab transparency, nruj thiab cuam tshuam tsis kam.
Polystyrene yog siv dav siv hluavtaws cob nrog ntau yam tshuaj tseem ceeb. Kab lus no yuav qhia txog kev siv tseem ceeb ntawm Polystyrene thiab nws daim ntawv thov hauv ntau qhov chaw.
1. Cov khoom siv yas
Raws li ib hom yas, Polystyrene yog siv los ua ntau yam khoom yas. Cov no suav nrog, tab sis tsis txwv rau, cutlery, khob, ntim, cov khoom ua si, CD, cov khoom siv, thiab lwm yam. Feem ntau cov khoom no yog pov tseg los yog lub teeb yuag.
2. Cov ntaub ntawv ntim khoom
Lub toughness ntawm Polystyrene ua rau nws yog ib qho khoom ntim zoo heev. Nws feem ntau yog siv los ua npuas yas (Foam Plastic) rau cov khoom ntim khoom. Lub teeb yuag, muaj zog, thiab tus nqi qis ua rau Polystyrene ua npuas ncauj ntim khoom ntawm kev xaiv rau ntau lub lag luam.
3. Synthetic roj hmab thiab adhesives:
Cov kua dej polystyrene tuaj yeem sib xyaw nrog cov tshuaj tsim nyog los tsim cov roj hmab hluavtaws. Polystyrene hluavtaws roj hmab yog dav siv nyob rau hauv cov ntsaws ruaj ruaj ntawm automotive daim duab peb sab qhov rais thiab rearview tsom iav, nrog rau lwm yam khoom xws li hoses thiab hlau rwb thaiv tsev ntaub ntawv. Polystyrene kuj tseem siv rau hauv kev tsim cov adhesives ua cov txheej txheem roj dispersant.
4. Tshuaj pleev ib ce:
Ntxiv nrog rau kev siv hauv kev lag luam, muaj qhov tsis tshua pom kev siv Polystyrene: tshuaj pleev ib ce. Polystyrene microspheres yog siv los kho qhov kev ntxhib los mos ntawm cov tshuaj pleev ib ce, tswj kev faib tawm thiab tswj kev ruaj ntseg. Tsis tas li ntawd, Polystyrene microspheres kuj tseem siv tau los ua cov lim dej hauv cov tshuaj pleev thaiv hnub.
5. Kev Tshawb Fawb Kev Ua Lag Luam:
Thaum kawg, Polystyrene kuj tseem siv los ua tus qauv coj mus kuaj hauv kev tshawb fawb kev lag luam. Vim hais tias cov dawb Polystyrene microspheres tuaj yeem yooj yim tsim ntau yam kev sim, xws li cov tshuaj tiv thaiv hydrolysis thiab kinetic thwmsim. Kev tshuaj xyuas seb Polystyrene microspheres cuam tshuam li cas los ntawm cov xwm txheej tuaj yeem pab cov kws tshawb fawb tshawb nrhiav kev daws teeb meem sib txawv.
Hauv kev xaus, Polystyrene, raws li cov khoom siv tshuaj, yog siv dav hauv ntau qhov chaw. Los ntawm cov khoom siv niaj hnub pov tseg, mus rau lub tsheb lub quarter qhov rai ntsaws ruaj ruaj, rau cov ntxaij lim dej hauv cov tshuaj pleev thaiv hnub, kev siv Polystyrene tsis yog tsuas yog muaj ntau haiv neeg tab sis kuj sib sib zog nqus. Nrog rau kev loj hlob sai ntawm kev tshawb fawb thiab thev naus laus zis, nws ntseeg tias Polystyrene yuav ua lub luag haujlwm ntau dua hauv ntau qhov chaw.
Kev tshawb pom ntawm Polystyrene tuaj yeem taug qab mus rau qhov kev tshawb pom ntawm styrene los ntawm German chemist Benjamin von Strous hauv 1839.
Xyoo 1839, Beniamin Strauss pom styrene thaum ziab cov resin tshiab. Nws pom cov kua uas tsis muaj xim, tsw qab ntxiag thiab muaj cov iav zoo nkauj los ntawm cov txheej txheem ziab. Los ntawm kev sim ntawm cov tebchaw, Strauss txiav txim siab lawv cov tshuaj muaj pes tsawg leeg thiab hu ua "styrone".
Nrog rau kev kawm tob ntawm styrone, cov kws tshawb fawb pib tshawb nrhiav cov tshuaj tiv thaiv polymerization ntawm styrone. Nyob rau hauv 1901, German chemist Hermann Staudinger tau npaj txoj kev tshawb xav ntawm polymerization, piv txwv li tias polymers yog cov saw ntev uas muaj ntau lub tsev molecules. Stoppart txoj kev xav tau tso lub hauv paus rau kev nthuav tawm cov tshuaj tiv thaiv polymerization, thiab tseem tau tso lub hauv paus rau kev sib txuas ntawm Polystyrene.
Nyob rau xyoo 1920, Polish chemist Maurice Bessie tau tshawb fawb ntxiv txog kev sib txuas ntawm Polystyrene, thiab nws pom tias styrene monomer tuaj yeem ua tau zoo polymerized rau hauv Polystyrene los ntawm ib qho catalyst. Qhov kev tshawb pom no ua rau cov khoom loj ntawm Polystyrene ua tau.
Nyob rau xyoo 1930, Polystyrene tau pib tsim rau hauv ntau yam khoom sib txawv, xws li cov khob uas tiv taus, lub raj mis yas, cov khoom ua si thiab cov teeb ci. Polystyrene ntau lawm tau nce ntau thaum Ntiaj Teb Tsov Rog II, muab cov tub rog kev lag luam nrog cov ntaub ntawv tseem ceeb xws li cov khoom siv sib txuas lus, npog tsheb thauj neeg mob thiab cov khoom siv dav hlau.
Xyoo 1950, Polystyrene ua npuas ncauj tau tawm thiab siv los ua cov ntaub ntawv rwb thaiv tsev thiab cov khoom ntim. Cov khoom no tau nrov sai sai thiab dhau los ua ib qho ntawm cov ntaub ntawv tseem ceeb hauv kev ntim khoom thiab kev thauj mus los.
Polystyrene tau yog ib qho tseem ceeb ntawm cov polymers hauv kev tsim khoom yas txij li xyoo pua 20th. Nws yog siv nyob rau hauv ntau yam khoom sib txawv, los ntawm cov khoom ntim rau cov khoom siv, thiab los ntawm cov khoom ua si mus rau qhov chaw pib. Txawm hais tias Polystyrene tau siv dav, nws kuj tau raug nug los ntawm ib puag ncig cov teeb meem, tshwj xeeb tshaj yog cov teeb meem ntawm cov khib nyiab vim nws nyuaj rau degrade yam ntxwv.
Chemical Properties:
1. Melting point: Polystyrene muaj qhov melting point ntawm ib ncig ntawm 110 degree thiab muaj thermal stability zoo.
2. Solubility: Polystyrene tuaj yeem yaj hauv ethylbenzene, toluene, methylene chloride, chloroform thiab lwm yam organic solvents, tab sis insoluble hauv dej.
3. Corrosion kuj: Polystyrene muaj corrosion kuj zoo rau acids, alkalis, ntsev tov thiab lwm yam tshuaj, tab sis nws muaj zog corrosion kuj rau cov kuab tshuaj, roj av thiab lwm yam roj.
4. Kev ruaj ntseg: Polystyrene kuj ruaj khov thiab tsis yooj yim rau lub hnub nyoog, tab sis nws yuav tig daj yog tias nws raug tshav ntuj ntev.
Reaction nature:
1. Cov tshuaj tiv thaiv ntxiv: Polystyrene tuaj yeem nqa tawm cov tshuaj tiv thaiv ntxiv nrog rau tag nrho cov oligomers, xws li isobutyl acrylate, styrene, thiab lwm yam.
2. Cov tshuaj tiv thaiv Oxidation: Polystyrene tuaj yeem oxidized los ntawm huab cua lossis oxygen, thiab nws yooj yim dua rau oxidize ntawm qhov kub thiab txias los yog ntxiv rau cov catalyst.
3. Ntxiv cov volatiles: Polystyrene tuaj yeem tsim sulfides, epoxy compounds, thiab lwm yam los ntawm kev sib ntxiv ntawm volatiles.
4. Cov tshuaj tiv thaiv cua sov: Thaum Polystyrene tau rhuab rau nws qhov kub thiab txias, qhov kev sib cais ntawm cov molecules yuav ua rau Polystyrene molecules mus rau tawg thiab recombination cov tshuaj tiv thaiv, yog li tsim cov tshuaj tshiab.
5. Kev hloov pauv cov tshuaj tiv thaiv: Polystyrene tuaj yeem hloov pauv cov tshuaj tiv thaiv, suav nrog kev hloov pauv nuclear thiab sab saw hloov, xws li: chlorine hloov pauv, bromine hloov pauv, nitration hloov pauv, thiab lwm yam.
6. Cov tshuaj tiv thaiv degradation: Nyob rau hauv qhov kev txiav txim ntawm ultraviolet lub teeb lossis kev kho cua sov, Polystyrene yuav decompose thiab tsim cov pa phem, xws li benzene thiab propylene, uas ua rau muaj kev hem thawj rau ib puag ncig thiab tib neeg kev noj qab haus huv.
Nyob rau hauv cov ntsiab lus, raws li ib tug hluavtaws polymer, Polystyrene cov tshuaj thiab reactive zog yog tshwj xeeb tshaj yog tseem ceeb, thiab nws cov khoom muaj peev xwm cuam tshuam ncaj qha rau nws cov ntau lawm thiab daim ntawv thov nyob rau hauv ntau yam teb thiab ib puag ncig tiv thaiv. Yog li ntawd, peb yuav tsum kawm thiab siv nws cov khoom tshwj xeeb hauv qhov tob, kom Polystyrene tuaj yeem ua lub luag haujlwm ntau dua thiab loj hauv thaj chaw ntawm cov ntaub ntawv polymer yav tom ntej.