Cov txheej txheem ntau lawm Polycarbonate.

Polycarbonatefeem ntau yog cov xim tsis muaj pob tshab nrog lub iav zoo li luster thiab lub teeb pom kev zoo siab (txog 88 mus rau 90 feem pua), ua rau nws nrov heev hauv cov ntawv thov uas yuav tsum tau ua kom pom tseeb. Lub melting point ntawm polycarbonate yog feem ntau ntawm 230-260 degree, thiab nws muaj thermal stability.

 

Polycarbonate yog qhov ua tau zoo rau ntau yam tshuaj, xws li roj thiab cov tshuaj alkaline, tab sis tsis tiv taus cov kua qaub muaj zog thiab qee cov kuab tshuaj organic, tshwj xeeb tshaj yog ketones thiab benzenes. Nyob rau hauv chav tsev kub, dej nqus ntawm polycarbonate yog tsawg, tab sis nyob rau hauv ib tug high humidity ib puag ncig, nws lub cev muaj zog yuav cuam tshuam.

 

Polycarbonate yog ib qho yooj yim rau txheej txheem los ntawm kev txhaj tshuaj molding, extrusion thiab thermoforming, thiab yog dav siv hauv electronics, khoom siv, tsheb, kev tsim kho thiab kev kho mob. Cov khoom lag luam muaj xws li cov tsom iav ntshiab, lub teeb ntxoov ntxoo, kho qhov muag discs, lub tsheb cua, thiab lub ru tsev ntshiab thiab cov ntxaij vab tshaus. Polycarbonate qhov kev tiv thaiv siab thiab kev tiv thaiv UV zoo ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev tiv thaiv kev nyab xeeb thiab pob tshab partitions.

 

1.Transesterification txoj kev

Transesterification yog ib qho ntawm cov txheej txheem tseem ceeb rau kev tsim cov polycarbonate (PC). Nyob rau hauv cov txheej txheem no, bisphenol A reacts nrog dimethyl carbonate ntawm qhov kub thiab txias los tsim polycarbonate thiab tso me me molecules ntawm methanol. Cov tshuaj tiv thaiv feem ntau tshwm sim ntawm 200-250 degree thiab tau tsav mus rau polymer los ntawm kev tshem tawm cov tshuaj methanol.

Nta:

• mature txheej txheem, yooj yim ua hauj lwm, haum rau loj-scale ntau lawm.
• Cov khoom tsim polycarbonate muaj cov pob tshab zoo thiab cov khoom siv kho tshuab thiab siv dav hauv cov khoom siv kho qhov muag thiab hluav taws xob.
• Cov kev mob tshwm sim kuj yog me me thiab lub zog siv tsawg.
• Kev tshem tawm zoo ntawm methanol los ntawm cov tshuaj tiv thaiv yog xav tau los txhim kho cov kev ua haujlwm ntawm polymerization, uas tuaj yeem ua rau kom cov complexity thiab nqi ntawm kev ua haujlwm.
• Qhov purity ntawm raw cov ntaub ntawv yuav tsum tau, thiab impurities yuav cuam tshuam rau qhov zoo ntawm cov khoom kawg.
   

2. Carbonate polymerization txoj kev

Lub polymerization ntawm cyclic carbonates (xws li cyclic dimethyl carbonate) yog ib txoj kev tshiab rau kev tsim cov polycarbonate. Nyob rau hauv cov txheej txheem no, cyclic carbonates yog lub nplhaib-qhib polymerized nyob rau hauv qhov kev txiav txim ntawm catalysts los tsim linear polycarbonate.

Nta:

• Cov txheej txheem tso cai rau cov mob me me thiab tsim nyog rau kev tsim cov khoom hnyav molecular polymers.
• Qhov tshwm simpolycarbonatemuaj purity siab thiab ruaj khov, ua rau nws haum rau high-end daim ntaub ntawv.
• Nyob rau hauv cov txheej txheem ntawm cov tshuaj tiv thaiv, kev xaiv thiab tswj cov catalysts yuav tsum tau, uas ua rau kom cov complexity ntawm cov txheej txheem.
• Piv nrog rau lwm cov txheej txheem, kev tsim khoom hauv kev lag luam yog qhov me me, thiab nws yuav tsum tau txhim kho ntxiv.
   

3. Direct polymerization txoj kev

Direct polymerization yog ib txoj kev ntawm kev sib txuas ntawm polycarbonate los ntawm reacting diphenol (xws li bisphenol A) nrog diisocyanate. Nyob rau hauv qhov kub thiab txias thiab catalyst, bisphenol A yog reacted nrog diisocyanate (xws li toluene diisocyanate) los ua polycarbonate. Nyob rau hauv txoj kev no, polycarbonates nrog cov khoom tshwj xeeb tuaj yeem npaj tau, uas yog tsim rau qee qhov tshwj xeeb ua haujlwm polymer daim ntaub ntawv.

Nta:

• Polycarbonate nrog cov khoom tshwj xeeb tuaj yeem npaj tau raws li qhov xav tau ntawm qee qhov tshwj xeeb ua haujlwm polymers.
• Cov polymer uas ua los ntawm cov tshuaj tiv thaiv muaj lub cev thiab tshuaj lom neeg zoo heev.
• Cov kev mob tshwm sim yog qhov nyuaj, kev ua haujlwm yuav tsum muaj siab, thiab yuav tsum muaj kev tiv thaiv corrosion thiab ruaj khov ntawm cov khoom siv.
• By-products tej zaum yuav raug tsim, uas yuav tsum tau kho los txhim kho lub purity ntawm cov khoom kawg.
   

4. Tshuaj polymerization

Kev daws polymerization yog txheej txheem ntawm kev sib txuas ntawm polycarbonate (PC) hauv cov kuab tshuaj. Nyob rau hauv cov txheej txheem no, bisphenol A yog tov nrog carbonate nyob rau hauv ib tug tsim nyog organic solvent, thiab ces polycarbonate yog tsim los ntawm polymerization.

Nta:

• Cov tshuaj tiv thaiv kab mob yog yooj yim los tswj, uas tuaj yeem txhim kho qhov hnyav molecular thiab cov qauv ntawm cov polymer thiab txhim kho kev ua haujlwm.
• Pab kom tau cov khoom tshwj xeeb ntawm polycarbonate, haum rau cov khoom me me lossis cov khoom tshwj xeeb polymer.
• Kev xaiv thiab rov qab txheej txheem ntawm cov kuab tshuaj yog complex, ua rau cov nqi ntau lawm.
• Ntau lawm efficiency kuj tsawg, tsis haum rau loj-scale lag luam ntau lawm.

Cov ntsiab lus
Polycarbonate (PC) yog ib qho kev loj hlob sai ntawm engineering yas, thoob ntiaj teb kev tsim muaj peev xwm los tswj txoj kev loj hlob, lub zog loj hlob ntawm Northeast Asia, tshwj xeeb tshaj yog Tuam Tshoj. Tuam Tshoj tau dhau los ua cov neeg tsim khoom thiab cov neeg siv khoom lag luam loj tshaj plaws hauv ntiaj teb, thiab lub teb chaws txoj cai txhawb nqa thiab kev tsim cov cuab yeej technology tau txhawb txoj kev loj hlob ntawm PC kev lag luam.

 

Txog Peb

Luoyang Dema Ntshuam & Export Co., Ltd. aims muab cov khoom zoo, nqi-zoo rau lub ntiaj teb no factories, yas khoom manufacturers, thiab cov khoom distributors. Luoyang Dema Ntshuam & Export Co., Ltd. muab qhov zoo tshaj plaws PP, PE, PVC, AVE, thiab ABS cov ntaub ntawv daws teeb meem rau cov khoom yas manufacturers, wholesalers, distributors, distributors, Hoobkas tswv, kev cob qhia, thiab lwm yam.

Yog tias koj tab tom nrhiav cov ntaub ntawv yas dav dav, thov koj xav tias dawb tau txais cov nqi tshiab thiab cov lus hais los ntawm Luoyang Dema Ntshuam & Export Co., Ltd. Pab pawg muag khoom yuav teb rau hauv 48 teev.