Zaj liv xwm
Thaum ntxov li thib ob ib nrab ntawm lub xyoo pua 15, lub ntuj Resin zais cia los ntawm cov thawj coj hu ua "Balsram" (uas muaj STRYRE cov cheebtsam cuam tshuam nrog polystyrene) tau siv. Txawm li cas los xij, nws tau kawm los ntawm kev pom tom qab 1836, thiab STRYREE monomer tau sib cais los ntawm Simon nyob rau hauv lub teb chaws Yelemees tom qab distillation ntawm balsam cob, thiab muaj npe "styrene".
Xyoo 1839, Simon Polymerized styrene los tsim polystyrene, uas nws ntseeg tias yuav tsum ua raws li oxidation. Xyoo 1845, Blyth thiab Hoffman tsis lees txais qhov oxidation thistory thiab suav tias nws yog ib qho khoom khov, yog li naming nws "metastylene" (polystyrene "(polystyrene).
Xyoo 1869, Berthelot ntawm Fabkis tau pom tias STYRENE tuaj yeem ua ke los ntawm cov nqaj hlau thiab ethylene. Tom qab, xyoo 1920, lub teb chaws Yelemees, nqa tawm cov polymerization uas yog cov ntaub ntawv ua pov thawj ntawm cov tswv yim ntawm polymers, tsim cov kev tshawb nrhiav polymer.
Kev lag luam ntawm polystyrene yog qhov txaus siab raws li nws lub peev xwm uas yog iav pob tshab insulpating, tab sis kev lag luam ntawm cov khoom siv hluav taws xob roj av styrenee yog qhov nyuaj dua. Ntawm qhov tod tes, nyob rau hauv kev kawm ntawm cov roj hmab hluavtaws hluav taws xob nqa tawm hauv Butadiene hauv Butadiene thiab tau them nyiaj rau cov khoom siv ntawm cov khoom lag luam, thiab tau ua raws li cov khoom siv ntawm cov tswv yim, uas tau ua tiav sai sai ntawm kev lag luam ntawm Styrene. Xyoo 1934, STRYRENE tau ua tiav cov hluavtaws ua tiav los ntawm Ethylogen Benzene, thiab ib xyoos tom qab, kev lag luam ntawm polystyrene kuj tau tshaj tawm txoj kev vam meej.
Molecular qauv qauv
Ps feem ntau yog ib lub taub hau-tus qauv tw, lub ntsiab yog cov qauv roj av, thiab ua kom cov roj av ua kom nruj, thiab ua rau lub ntsej muag zoo linephold. Vim muaj lub nplhaib Benzene, PS muaj qhov siab TG (80 ~ 105 degree), yog li nws yog ib qho yooj yim rau kev ntxhov siab vim yog cov nplais ntawm cov molecular. Lub xub ntiag ntawm sab Penyyl pawg ua rau cov tshuaj lom neeg ntawm polystyrene muaj ntau dua, thiab cov yam ntxwv zoo li no, thiab lwm yam, tuaj yeem nqa tawm ntawm polystyrene. Tsis tas li ntawd, sab Pelyl Group tuaj yeem qhib cov pab pawg hydrogen ntawm lub ntsiab saw, uas tau yooj yim oxidized los tsim peroxide hauv huab cua, thiab ua rau kev cuam tshuam. Yog li ntawd, cov khoom lag luam yooj yim rau daj thiab nkig hauv kev siv sab nraum zoov ntev. Txawm li cas los xij, vim hais tias Benzene Ring yog lub rauv thaiv, lub radiation tsis kam ntawm cov polymer yog qhov zoo, thiab nws cov khoom tau hloov me me hauv hluav taws xob hluav taws xob.
Cov cuab yeej physicochemical cov cuab yeej
Cov lus qhia txog kub: 30 ~ 80 degree
Refactive index n20 / d: 1.5916
Dielectric chanstant: 24. 0
Melting Taw tes: 240 Qib
Txheeb ze ceev (dej {{=1): 1.04 ~ 1.13 (Amorphous Qiv 1.04 ~ 1.06 g /11 g / cm3)
Flash ntsiab lus: 345 ~ 360 Qib C (Huab Degree C (Huab Flash Flash taw tes ntawm polystyrene hmoov av)
Tshwm sim cua sib txuas kub: 427 degree
Cov iav hloov cua sov ntawm polystyrene: 80 ~ 105 degree (nyob rau hauv cov uas, unactic polystyrene yog 100 degree), isotactic polystyrene yog 100 degree)
Conductivity: 10-16 s / m
Thermal conductivity: 0. 08w / (map k)
Cov tub ntxhais hluas cov qauv: 3000 ~ 3600 MPa
Tensile Lub Zog: 46 ~ 60 MPA
Elongation: 3% ~ 4%
Charpy Empion Xeem: 2 ~ 5 KJ / M2
Thermal nthuav kev coefficient: 8 × {1}} / k
Muaj peev xwm kub: 1.3kj / (KGAN
Dej nqus: {{0}}}}. 03% ~ 0.1%
Kev ntsuas kub: 280 degree
Resistivity: 1020 ~ 1022 ω · cm.