PVC thiab silicone cov ntaub ntawv muaj ntau qhov zoo sib txawv hauv cov txheej txheem tsim khoom, tshwj xeeb tshaj yog nyob rau hauv peb lub neej txhua hnub. Ntxiv mus, cov kev lag luam sib txawv kuj muaj cov kev cai sib txawv rau kev xaiv cov khoom siv. Tsuas yog los ntawm kev nkag siab zoo txog qhov xwm txheej thiab qhov sib txawv ntawm cov khoom tuaj yeem ua rau peb xaiv zoo dua. Niaj hnub no, nrog kev pab ntawm tsab xov xwm no, cia peb mus ze lawv lub ntiaj teb thiab tshawb nrhiav lawv qhov sib txawv.
Taw qhia ntawm pvc roj hmab
Daim ntawv ntawm PVC yog hmoov dawb thiab cov qauv tsis meej. Nws qhov txheeb ze ntom ntom yog li 1.4. Nws tuaj yeem vitrified tsuas yog thaum qhov kub nce mus txog 77 ~ 90 ℃, thiab nws tuaj yeem decomposed tsuas yog thaum qhov kub nce mus txog 170 ℃. PVC muaj qhov tsis zoo rau lub teeb thiab cua sov. Piv txwv li, thaum qhov kub siab tshaj 100 ℃ los yog raug rau lub hnub ntev, nws yuav decompose los tsim hydrogen chloride. Yog hais tias nws tseem nyob rau hauv cov xwm txheej no, nws yuav ntxiv catalyze thiab decompose, ua rau discoloration.
Nyob rau tib lub sijhawm, nws lub cev thiab cov khoom siv kho tshuab yuav poob qis. Vim tias tus yam ntxwv no, peb feem ntau yuav tsum tau ntxiv ib qho nyiaj stabilizer hauv kev ua haujlwm tiag tiag thiab siv los xyuas kom meej tias nws tuaj yeem ua haujlwm ib txwm nyob hauv lub teeb thiab cua sov. Hauv kev lag luam kev lag luam, qhov hnyav molecular ntawm PVC feem ntau yog nyob nruab nrab ntawm 50000 ~ 110000, thiab molecular polydispersity muaj zog, tab sis cov molecular polymerization yuav maj mam nce nrog qhov kub thiab txias; Vim nws cov yam ntxwv tsis ruaj khov molecular, PVC tsis muaj qhov sib txuas ruaj khov. Nws feem ntau pib mos ntawm 80 ~ 85 ℃, tab sis thaum qhov kub nce mus txog 130 ℃, nws yuav dhau los ua lub xeev viscoelastic.
Thaum qhov kub nce mus txog 160 ~ 180 ℃, nws yuav pib hloov mus rau hauv lub xeev viscous ntws; PVC muaj cov khoom siv zoo, nrog lub zog tensile ntawm txog 60MPa thiab cuam tshuam lub zog ntawm 5 ~ 10kj / m2; Nws kuj muaj cov khoom zoo dielectric. PVC siv los ua lub ntiaj teb loj tshaj plaws cov hom phiaj yas, yog li nws muaj ntau yam kev siv. Cov peev txheej ntawm daim ntawv thov suav nrog: cov khoom siv hauv tsev, cov khoom lag luam, cov khoom siv niaj hnub, cov tawv tawv hauv pem teb, cov vuas hauv pem teb, tawv tawv, cov kav dej, cov xov hlau thiab cov cables, ntim zaj duab xis, lub raj mis, cov ntaub ntawv foaming, sealing cov ntaub ntawv, fibers, thiab lwm yam.
Taw qhia ntawm silicone roj hmab
Silicon dioxide yog qhov tseem ceeb ntawm silicon dioxide. Silicone yog ib qho polymer ua los ntawm silicon thiab oxygen. Silicon yog lub ntuj tsim uas yog qhov thib ob tshaj plaws nyob rau hauv lub ntiaj teb crust, tom qab oxygen. Silicon tsis tshwm sim raws li ib tug polymer; Nws yuav tsum tau ua ke nrog lwm cov khoom los tsim cov polymers. Silicone muaj ntau yam kev siv, ob qho tib si kev lag luam thiab cov neeg siv khoom. PVC yog cov khoom siv uas tau siv rau hauv kev tsim kho rau ntau xyoo lawm, thaum silicone yog cov khoom siv tshiab uas tau muaj koob meej.
Cov tshuaj formula ntawm silicone yog xsio2 · yh2o, uas yog pob tshab los yog milky dawb khoom hais. Cov qauv siv hluav taws xob muaj cov qauv qhib qhov ntxeem tau thiab muaj zog adsorption muaj peev xwm rau ntau yam khoom. Dilute sulfuric acid (los yog hydrochloric acid) yog ntxiv rau aqueous tov ntawm iav dej kom stabilize nws, thiaj li tsim silica gel khoom dej. Silica gel tuaj yeem tau txais los ntawm kev tshem tawm Na + thiab SO42 - (CL) ions los ntawm electrolyte los ntawm kev ntxuav dej. Raws li tus neeg sawv cev hygroscopic, hygroscopic tus nqi ntawm qee cov silica gel yog li 40%, lossis txawm tias 300%. Nws yog siv rau roj ziab, nqus roj, kua chromatography, thiab lwm yam. nws kuj tseem siv tau los ua cov catalyst. Yog tias cobalt chloride ntxiv, dej xiav thiab liab yuav nqus tau tom qab ziab. rov ua dua.
Dab tsi yog qhov txawv ntawm PVC thiab Silicone?
Kev sib piv dav dav:
- PVC cov khoom yog ua los ntawm PVC, roj av thiab xim muab tshuaj txhuam. Cov ntaub ntawv raw yog rhuab thiab txias los ntawm micro txhaj molding txheej txheem. Silica gel, uas tsuas yog siv cov tshuaj lom neeg xws li silica gel ntxiv rau xim masterbatch, yog muab tso rau hauv pwm los ntawm roj hmab calendering thiab refining tshuab, thiab ces rhuab thiab txias los ntawm roj siab.
- Nyob rau hauv cov nqe lus ntawm tsos, PVC cov khoom yog coarser dua silicon cov khoom, nrog du nto thiab ci xim.
- Raws li kev txiav txim tactile, silica gel cov khoom yog mos, nrog zoo hardness thiab elasticity. PVC yog mos thiab kuj nyuaj, ob qho tib si mos thiab tawv, adjustable tab sis tsis tawv PVC.
- PVC yog cov khoom siv tiv thaiv ib puag ncig, tseem hu ua atbc-pvc. Silica gel tuaj yeem dhau ROHS ntawv pov thawj thiab yog ib puag ncig zoo.
- Cov khoom siv silicone feem ntau yog pob tshab thiab tsis muaj ntxhiab tsw me ntsis. Cov khoom yog nyob rau hauv hmoov zoo. Cov khoom siv yas yuav tsim cov xim dub tom qab hlawv, thiab qhov kub hnyiab tsis zoo.
- Silica gel cov khoom muaj cua sov thiab txias ua hauj lwm hauv PVC cov khoom. Silica gel cov khoom tuaj yeem ua kom sov hauv qhov cub microwave, thaum PVC khoom tsis tuaj yeem.
Thiab muaj qee cov ntsiab lus tshwj xeeb sib piv:
Lub zog: PVC muaj zog dua li silicone, ua rau nws xaiv zoo rau cov ntawv thov uas yuav tsum tau ua kom ntev.
Temperature Resistance: Silicone tiv taus kub dua li PVC, ua rau nws xaiv zoo dua rau cov ntawv thov uas yuav tsum tau ua kom sov.
Flexibility: PVC yog hloov tau ntau dua li silicone, ua rau nws xaiv zoo dua rau cov ntawv thov uas yuav tsum tau txav mus los.
Transparency: PVC tsis muaj pob tshab dua li silicone, ua rau nws xaiv zoo dua rau cov ntawv thov uas xav tau kev pom.
Tus nqi: PVC tsis tshua kim dua li silicone, ua rau nws xaiv zoo dua rau kev siv nyiaj txiag.
-Xav txog yam koj siv cov khoom siv rau. Yog tias koj tab tom nrhiav ib yam dab tsi los siv sab nraum zoov, koj yuav xav tau qee yam uas tuaj yeem tiv taus cov ntsiab lus.
-Xav txog koj cov peev nyiaj. Qee cov khoom siv kim dua lwm tus.
-Xav seb koj xav siv sijhawm npaum li cas ntawm qhov project. Qee cov ntaub ntawv yooj yim ua hauj lwm nrog lwm tus.
- Txheeb xyuas cov kev xaiv sib txawv muaj. Muaj ntau ntau hom ntaub ntawv xaiv los ntawm, yog li siv koj lub sijhawm thiab nrhiav qhov zoo tshaj plaws rau koj.
xaus:
Muaj ntau qhov sib txawv ntawm PVC thiab silicone roj hmab. Cov saum toj no yog qhov sib txawv tseem ceeb. Lawv muaj ntau qhov sib txawv. Kev xaiv cov ntaub ntawv tshwj xeeb xav kom peb xaiv raws li peb tus kheej hom khoom. Vim tias cov khoom sib txawv muaj qhov sib txawv rau cov khoom siv raw, tshwj xeeb tshaj yog nyob rau hauv qee qhov kev lag luam, qhov tshwj xeeb ntawm cov ntaub ntawv kuj yuav tsum tau ua tib zoo txiav txim siab ua ntej xaiv.Conclusion: PVC thiab silicone muaj qhov zoo thiab qhov tsis zoo, yog li nws yog ib qho tseem ceeb uas yuav tau xav txog yam koj xav tau ua ntej txiav txim siab. hom yas twg yog qhov zoo tshaj rau koj daim ntawv thov.
Tsis tas li ntawd, piv nrog lwm cov ntaub ntawv polymer, PVC muaj qhov zoo ntawm tus nqi qis, qhov dav ntawm cov khoom siv raw, cov txheej txheem tsim khoom yooj yim, rwb thaiv tsev thiab nplaim hluav taws. Nyob rau tib lub sijhawm, cov qauv siv hluav taws xob tuaj yeem rov ua dua tshiab thiab muaj txiaj ntsig ntawm kev huv thiab kev tiv thaiv ib puag ncig. Tab sis yog tias koj xav tau qib zaub mov raj cov ntaub ntawv, silica gel yog yooj yim dua. Kev xaiv cov neeg muag khoom tsim nyog thiab cov khoom zoo yog undoubtedly ib qho kev txiav txim siab tseem ceeb ntawm txhua lub lag luam. Bai-OTT tuaj yeem muab koj ob yam khoom thiab cov kev pabcuam nrog kev ruaj ntseg zoo, uas tuaj yeem ua tau raws li koj xav tau. Tom qab peb xav tau, koj tuaj yeem tiv tauj peb.
