PTFE (polytetrafluoroethylene)thiab polyester (xws li PET, PBT, thiab lwm yam) yog ob qho khoom siv polymer sib txawv kiag li. Lawv muaj qhov sib txawv tseem ceeb hauv cov qauv tshuaj, cov yam ntxwv ntawm kev ua haujlwm thiab daim ntawv thov. Cov hauv qab no yog cov ncauj lus kom ntxaws sib piv:
1. Cov qauv tshuaj thiab muaj pes tsawg leeg
PTFE (polytetrafluoroethylene)
●Structure: Nws yog tsim los ntawm ib tug carbon atom saw thiab ib tug fluorine atom uas yog tag nrho saturated (-CF₂-CF₂-), thiab yog fluoropolymer.
●Nta: Lub zog tsis tshua muaj zog carbon-fluorine daim ntawv cog lus ua rau nws muaj tshuaj lom neeg tsis txaus ntseeg thiab huab cua tsis kam.
Polyester
●Structure: Cov saw tseem ceeb muaj cov ester pawg (-COO-), xws li PET (polyethylene terephthalate) thiab PBT (polybutylene terephthalate).
●Nta: ester daim ntawv cog lus muab nws zoo txhua yam muaj zog thiab kev ua tau zoo, tab sis nws cov tshuaj lom neeg ruaj khov qis dua li ntawm PTFE.
2. Kev sib piv kev ua haujlwm
| Yam ntxwv | PTFE | Polyester (xws li PET) |
| Thaum tshav kub kub kuj | - Kev siv tsis tu ncua kub: -200 ° C txog 260 ° C | - PET: -40 ° C txog 70 ° C (ntev ntev) |
| Tshuaj stability | Resistant mus rau yuav luag tag nrho cov acids, alkalis thiab cov kuab tshuaj ("yas huab tais") | Resistant rau qaug zog acids thiab alkalis, yooj yim corroded los ntawm muaj zog acids thiab alkalis |
| Kev sib txhuam coefficient | Tsawg heev (0.04, nws tus kheej lubricating) | Siab dua (xav tau cov additives los txhim kho) |
| Mechanical zog | Tsawg, yooj yim nkag | Siab dua (PET feem ntau siv hauv fibers thiab fwj) |
| Dielectric zog | Zoo heev (cov khoom siv hluav taws xob ntau zaus) | Zoo (tab sis rhiab rau cov av noo) |
| Kev ua haujlwm nyuaj | Yooj yim rau yaj txheej txheem (yuav tsum tau sintering) | Yuav txhaj thiab extruded (yooj yim rau txheej txheem) |
Daim ntawv thov teb
PTFE: dav siv hauv aerospace, khoom siv hluav taws xob, tshuaj lom neeg kev lag luam, kev ua zaub mov, kev kho mob thiab lwm yam, feem ntau siv los ua cov ntsaws ruaj ruaj, bearings, coatings, insulating cov ntaub ntawv, thiab lwm yam.
Polyester: feem ntau yog siv rau hauv textile fibers, yas hwj, films, engineering plastics thiab lwm yam teb
Kev Ntseeg Tsis Ncaj Ncees
Non-stick txheej: PTFE (Teflon) feem ntau yog siv rau hauv cov lauj kaub uas tsis yog-stick, thaum polyester tsis tuaj yeem tiv taus qhov kub thiab txias.
Fiber teb: Polyester fibers (xws li polyester) yog cov ntaub ntawv tseem ceeb rau khaub ncaws, thiabPTFE fiber ntautsuas yog siv rau lub hom phiaj tshwj xeeb (xws li tshuaj tiv thaiv khaub ncaws)
PTFE siv li cas hauv kev lag luam khoom noj?
PTFE (polytetrafluoroethylene) muaj ntau yam kev siv hauv kev lag luam khoom noj khoom haus, feem ntau yog vim nws cov tshuaj lom neeg ruaj khov zoo heev, kub tsis kam, tsis nplaum thiab tsis muaj kev sib txhuam coefficient. Cov hauv qab no yog cov kev siv tseem ceeb ntawm PTFE hauv kev lag luam zaub mov:
1. Khoom noj khoom haus txheej txheej
PTFE txheej yog dav siv nyob rau hauv lub hauv ob sab phlu thiab nto kho cov khoom noj khoom haus ua khoom. Nws tsis yog-stickiness tuaj yeem tiv thaiv cov khoom noj los ntawm kev ua raws li cov khoom siv hauv lub sijhawm ua haujlwm, yog li ua kom yooj yim rau kev ntxuav thiab txhim kho kev tsim khoom. Piv txwv li, hauv cov khoom siv xws li ncu, steamers, thiab blenders, PTFE txheej tuaj yeem ua kom cov zaub mov tsis ua raws li kev ua haujlwm kub thaum tswj kev ncaj ncees thiab zoo ntawm cov zaub mov.
2. Conveyor siv thiab conveyor siv
PTFE-coated conveyor siv thiab conveyor siv feem ntau yog siv los ua khoom noj khoom haus ntau, xws li ua noj thiab xa cov qe, nqaij npuas kib, hnyuv ntxwm, nqaij qaib, thiab hamburgers. Qhov qis coefficient ntawm kev sib txhuam thiab kub tsis kam ntawm cov khoom siv no ua rau nws ua haujlwm ruaj khov nyob rau hauv qhov kub thiab txias yam tsis muaj kev paug rau cov zaub mov.
3. Khoom noj khoom haus hoses
PTFE hoses yog dav siv rau kev thauj mus los ntawm cov zaub mov thiab dej haus, xws li cawv, npias, khoom noj siv mis, syrups thiab seasonings. Nws cov tshuaj inertness ua kom ntseeg tau tias nws tsis cuam tshuam rau qhov zoo ntawm cov khoom xa tawm hauv qhov kub ntawm -60.°C rau 260°C, thiab tsis qhia cov xim, saj lossis tsw. Tsis tas li ntawd, PTFE hoses ua tau raws li FDA cov qauv los xyuas kom meej cov zaub mov muaj kev nyab xeeb.
4. Cov ntsaws ruaj ruaj thiab gaskets
PTFE seals thiab gaskets yog siv nyob rau hauv kev sib txuas ntawm cov kav dej, li qub thiab nplawm paddles ntawm cov khoom ua zaub mov. Lawv tuaj yeem tiv thaiv corrosion los ntawm ntau yam tshuaj lom neeg thaum tseem nyob ruaj khov hauv qhov kub thiab txias. Cov ntsaws ruaj ruaj no tuaj yeem tiv thaiv cov zaub mov kom tsis txhob muaj paug thaum ua haujlwm thaum ua kom yooj yim rau kev tu thiab tu cov cuab yeej.
5. Cov khoom ntim khoom noj
PTFE kuj tseem siv rau hauv cov khoom ntim khoom noj, xws li cov txheej tsis-stick pan coatings, ci ntawv txheej, thiab lwm yam. Cov ntaub ntawv no xyuas kom meej tias cov zaub mov tsis ua raws li lub sijhawm ntim thiab ua noj, thaum tswj kev nyiam huv thiab kev nyab xeeb ntawm zaub mov.
6. Lwm yam kev siv
PTFE kuj tseem siv tau rau hauv lub zog, bearing bushings thiab engineering yas qhov chaw hauv kev ua zaub mov, uas tuaj yeem txhim kho qhov hnav tsis kam thiab corrosion tsis kam ntawm cov cuab yeej thaum txo cov nqi tu.
Kev xav txog kev nyab xeeb
Txawm hais tias PTFE muaj ntau yam zoo heev, koj tseem yuav tsum tau xyuam xim rau nws txoj kev nyab xeeb thaum siv nws hauv kev lag luam khoom noj. PTFE tuaj yeem tso cov pa phem ntawm qhov kub thiab txias, yog li nws yog qhov tsim nyog los tswj kev siv qhov kub thiab txias kom tsis txhob muaj cua sov mus ntev. Tsis tas li ntawd, nws yog ib qho tseem ceeb uas yuav tau xaiv PTFE cov ntaub ntawv uas ua tau raws li cov kev cai tswj hwm.
Post lub sij hawm: Mar-26-2025