Ptfe yog dab tsi?
Polytetrafluoroethylene (Tshuaj yej)PTFE) yog ib qho fluoropolymer tsim los ntawm tetrafluoroethylene thiab yog PFAS uas muaj ntau yam kev siv. PTFE cov tshuaj lom neeg tseem ceeb, kub, noo noo, thiab hluav taws xob ua rau nws yog ib qho khoom siv zoo tagnrho thaum twg cov khoom, cov cuab yeej, thiab cov khoom yuav tsum tau ruaj khov thiab txhim khu kev qha txawm tias cov ntawv thov hnyav tshaj plaws. Ntxiv rau qhov no, PTFE muaj kev ruaj khov tshwj xeeb hauv qhov kub qis thiab kev tiv thaiv hluav taws uas ua rau nws yog qhov kev xaiv zoo rau cov npe khoom, cov khoom, thiab cov ntawv thov uas loj hlob tas li.
PVC yog dab tsi?
PVCyog lub ntiaj teb thib peb-feem ntau tsim cov polymer yas (tom qab polyethylene thiab polypropylene). Kwv yees li 40 lab tons ntawm PVC raug tsim tawm txhua xyoo.
PVC muaj ntau hom tawv (qee zaum hu ua RPVC) thiab cov qauv yooj ywm. Cov PVC tawv siv rau hauv kev tsim kho rau cov yeeb nkab, qhov rooj thiab qhov rai. Nws kuj siv rau hauv kev ua cov fwj yas, ntim khoom, thiab daim npav txhab nyiaj lossis daim npav tswv cuab. Ntxiv cov yas ua rau PVC mos dua thiab yoog tau dua. Nws siv rau hauv cov kav dej, cov xov hluav taws xob rwb thaiv tsev, pem teb, cov paib, cov ntaub ntawv phonograph, cov khoom siv inflatable, thiab hauv cov roj hmab hloov. Nrog rau paj rwb lossis ntaub linen, nws siv rau hauv kev tsim cov ntaub canvas.
Kev sib piv ntawm PVC thiab PTFE Lub Cev Khoom
| Lub Npe Vaj Tse | Chav | ABS/PVC hlau | PTFE puv |
| Peev Xwm Kub Tshwj Xeeb | BTU/lb-°F | 0.382 |
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| Modulus txiav | ksi |
|
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| Lub zog compressive | psi | 3050 | 5710 |
| Poisson qhov piv |
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| Dielectric tas mus li |
| 3.3 | 3.7 |
| Lub zog dielectric | kV/hauv | 508 | 467 |
| Kev ntev thaum tawg | % | 100 | 9.4 |
| Lub zog flexural Yield | psi | 7030 | 9820 |
| Modulus ntawm Elasticity | ksi | 319 | 348 |
| Qhov nyuaj, Rockwell R |
| 88 | 110 |
| Lub Zog Tensile, Qhov Kawg | psi | 4030 | 6580 |
| Lub Zog Tensile, Cov Khoom Tawm | psi | 5420 | 8270 |
| Kev Tiv Thaiv Hluav Taws Xob | ohm-cm | 1.00e+14 | 3.00e+15 |
| Qhov Ceev | lb/in³ | 0.0423 | 0.0531 |
| Kub Tshaj Plaws Kev Pabcuam, Cua | °F | 170 | 212 |
| Kev Ua Kub | BTU-hauv/teev-ft²-°F | 1.87 | 1.67 |
| Kev tawg tawv | ksi-in½ |
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Ntawm Besteflon peb yog cov kws tshaj lij hauv kev xa cov kev daws teeb meem PTFE tshiab rau koj cov ntawv thov kev siv tshuab. Yog xav paub ntxiv txog peb cov khoom PTFE, thov hu rau peb!
Lub sijhawm tshaj tawm: Lub Yim Hli-28-2023