PTFE tubing yog ib qho kev ua haujlwm siab - kev daws teeb meem dav siv hauv tshuaj, tshuaj, khoom siv hluav taws xob, thiab kev lag luam. Nws sib txuas cov tshuaj tiv thaiv tshwj xeeb, thermal stability, mechanical elasticity, thiab hluav taws xob rwb thaiv tsev, ua rau nws tsim nyog rau kev xav tau kev hloov pauv dej thiab corrosive ib puag ncig.
Tshuaj tiv thaiv
PTFE yog inert rau yuav luag tag nrho cov tshuaj, nrog rau muaj zog acids, bases, thiab cov kuab tshuaj. Qhov no tso cai rau nws kom nyab xeeb thauj cov kua corrosive thiab gases yam tsis muaj degradation, kis kab mob, lossis cov tshuaj tiv thaiv nrog qhov nruab nrab. PTFE tubing yog tsim rau kev sib cuag nrog cov tshuaj lom neeg ntawm ob qho tib si ambient thiab siab kub.
Chemical Compatibility Table rau PTFE Tubing:
|
Hom tshuaj |
Kev tiv thaiv |
Sau ntawv |
|
Hydrochloric acid |
Zoo heev |
Stable ntawm tag nrho cov concentrations |
|
Sulfuric Acid |
Zoo heev |
Haum rau ntev - raug raug |
|
Sodium hydroxide |
Zoo heev |
Siab alkali tsis kam |
|
Organic Solvents |
Zoo heev |
Compatible nrog cawv, ketones, hydrocarbons |
|
Oxidizing Agents |
Zoo heev |
Qhov saum npoo tej zaum yuav cuam tshuam rau qhov kub siab heev |
Thermal Properties
PTFE tubing tuaj yeem ua haujlwm thoob plaws qhov kub thiab txias, los ntawm cov xwm txheej cryogenic mus rau qhov kub siab. Nws tuav cov txheej txheem kev ncaj ncees thiab tshuaj tiv thaiv nyob rau hauv huab cua kub. Nws thermal expansion yog tsawg rau ib tug polymer, ua kom muaj kev ruaj ntseg ntawm cov kav dej thiab cov kua dej.
Thermal Properties Table:
|
Khoom |
Tus nqi |
Sau ntawv |
|
Kev Siv Nruam Kub |
-200℃rau 260 degree |
Haum rau ob qho tib si cryogenic thiab siab -kev siv kub |
|
Qhov siab tshaj plaws luv -Lub Sij Hawm Temp |
315 degree |
Qee lub sij hawm ncov tsis muaj degradation |
|
Melting Point |
327 degree |
Semi-crystalline polymer |
|
Coefficient ntawm Thermal Expansion |
12-24 × 10^-5 / degree |
Tsawg expansion ua kom tus nqi ntws zoo ib yam |
Mechanical Properties
PTFE tubing yog hloov tau, nrog lub zog tensile nruab nrab thiab siab elongation, cia nws khoov yam tsis muaj cracking. Nws qhov kev sib txhuam qis qis tiv thaiv kev ua kom zoo thiab tso cai rau cov kua dej ntws zoo. PTFE tubing muaj nruab nrab creep tsis kam, uas yuav tsum tau txiav txim siab nyob rau hauv siab - siab los yog ntev - lub sij hawm load daim ntawv thov.
Mechanical Properties Table:
|
Khoom |
Tus nqi |
Sau ntawv |
|
Tensile zog |
21-35 MPa |
Tsim nyog rau tubing thiab qis -siab tshuab |
|
Elongation ntawm Break |
200–400% |
High yooj rau khoov thiab nkhaus |
|
Hardness (Shore D) |
55–65 |
Mos polymer haum rau tubing yooj |
|
Coefficient ntawm kev sib txhuam |
0.05–0.10 |
Tsawg heev; txhawb nqa cov kua dej ntws |
|
Creep Resistance |
Nruab nrab |
Ntsuas qhov ntev - lub sij hawm siab - cov ntawv thov siab |
Cov khoom hluav taws xob
PTFE tubing yog ib qho zoo heev hluav taws xob insulator. Nws khaws lub zog dielectric siab thiab tsis tshua muaj dissipation txawm nyob rau hauv qhov kub thiab txias thiab chemically aggressive ib puag ncig. Qhov no ua rau nws zoo tagnrho rau tubing hauv hluav taws xob lossis siab -voltage systems.
Hluav Taws Xob Khoom Table:
|
Khoom |
Tus nqi |
Sau ntawv |
|
Dielectric zog |
60-200 kV / hli |
Muaj zog rwb thaiv tsev rau high -voltage applications |
|
Dielectric qhov tsis tu ncua (1 MHz) |
2.1–2.2 |
Stable tshaj qhov ntau zaus |
|
Dissipation Factor (1 MHz) |
0.0002–0.0004 |
poob qis heev |
|
Volume Resistivity |
1 × 10 × 18 Ω cm |
Khaws rwb thaiv tsev nyob rau hauv high humidity |
Lub cev thiab Dimensional Properties
PTFE tubing has low density, low moisture absorption, and a non-stick surface. Nws yog chemically inert thiab hydrophobic, kom ntseeg tau ntev -lub sij hawm purity rau kua hloov. PTFE tubing muaj nyob rau hauv ntau yam ntawm puab diameters, phab ntsa thicknesses, thiab lengths rau saj zawg zog system tsim.
Lub cev thiab Dimensional Properties Table:
|
Khoom |
Tus nqi |
Sau ntawv |
|
Qhov ntom |
2.12 g / cm³ |
Me ntsis hnyav dua li cov khoom siv yas |
|
Kev nqus dej |
<0.01% |
Zoo tagnrho rau siab -purity kua tshuab |
|
Nto Zog |
18 mN / m |
Tsis yog -stick, tsawg fouling |
|
Xim |
Dawb, translucent |
Qee cov xim muaj nyob ntawm kev thov |
|
Standard OD Ntau |
1-50 mm |
Kev cai qhov ntau thiab tsawg muaj |
|
Txheem Phab Ntsa Thickness |
0.5-5 hli |
Nyob ntawm qhov ntsuas siab |
Processing thiab Fabrication
PTFE tubing tsis tuaj yeem yaj- ua tiav zoo li feem ntau cov thermoplastics. Nws feem ntau yog tsim los ntawm paste extrusion los yog ram extrusion, ua raws li sintering. PTFE tuaj yeem raug machined rau siab precision tom qab sintering, thiab nthuav PTFE (ePTFE) tubing muaj microporous qauv rau pom thiab roj permeation daim ntaub ntawv.
Processing thiab Fabrication Table:
|
Txoj kev |
Daim ntawv thov / Feature |
|
Muab tshuaj txhuam / Ram Extrusion |
Tubing nrog meej OD / ID thiab phab ntsa tuab |
|
Sintering |
Txhim kho mechanical stability thiab tshuaj tiv thaiv |
|
Tshuab dhos |
Kev cai ntev, khoov, lossis cov khoom siv |
|
EPTFE nthuav dav |
Porous raj rau pom thiab daim nyias nyias |
Daim ntawv teev npe luv
PTFE tubing yog dav siv nyob rau hauv cov tshuaj inertness, thermal kuj, tsis tshua muaj kev sib txhuam, thiab hluav taws xob rwb thaiv tsev yuav tsum tau:
- Chemical Processing: Thauj aggressive acids, alkalis, thiab hnyav
- Pharmaceutical & Semiconductor: Siab -purity kua hloov kab
- Hluav taws xob & Electronics: rwb thaiv tsev rau cov xov hlau, cables, thiab siab -voltage systems
- Mechanical Applications: Bearings, slides, seals, thiab gaskets
- Laboratory & Khoom noj khoom haus kev lag luam: Corrosion-resistant, tsis yog- cov kua dej lo