Keeb kwm ntawm polytetrosraethylene pib rau lub Plaub Hlis 6, 1938 ntawm Du Pont Pontatory hauv Jackson chav kuaj mob tshiab. Nyob rau hnub ntawd muaj hmoo, Dr. Roy J. Plunkett, uas tau ua haujlwm nrog gases ntsig txog freau cov polymerised nthawv rau ib qho dawb, waxy tawv.

Kuaj pom tias cov khoom no yog cov khoom siv zoo heev. Nws yog ib tug cob uas tsis kam mloog cov tshuaj paub lossis siv kuab tshuaj; Nws cov nplaim uas tsis muaj qab zib uas yuav luag tsis muaj tshuaj rau nws; Na pa tsis ua rau nws swell, thiab nws tsis demrade lossis ua brittle tom qab lub sij hawm ntev tau raug tshav ntuj. Nws muaj lub ntsiab lus melting ntawm 327 ° C thiab, raws li txwv rau cov pa thermoplastics, nws yuav tsis ntws sab saud uas melting pot. Qhov no txhais tau tias cov txheej txheem kev ua lag luam tshiab tau tsim los ua kom haum cov yam ntxwv ntawm cov khoom noj tshiab - uas du Phaj npe hu ua Teflon.

Qiv cov tswv yim los ntawm hmoov metallurgy, du Pont engineers muaj peev xwm nkag tau rau hauv cov blocks uas yuav yog machined los ua ib qho xav tau. Tom qab ntawd, cais tawm ntawm cov cob hauv dej hauv dej tau tsim los ua lub tsho tiv no iav-daim ntaub thiab ua kom cov Enam nplaum. Ib cov hmoov tau tsim tawm uas tuaj yeem sib xyaw nrog cov roj nplua nyeem thiab extruded rau cov hlau sib zog thiab chaw tsim khoom tubing.

Txog xyoo 1948, 10 xyoo tom qab tshawb pom ntawm polytetrrafluoroethylene, du pont yog qhia cov thev naus laus zis rau nws cov neeg siv khoom. Tsis ntev kev ua lag luam tau ua haujlwm ua haujlwm, thiab polytetrafluoroethylene PTFE resins tau muaj nyob rau hauv kev faib tawm, granular resins thiab hmoov zoo.

Vim li cas thiaj xaiv PTFE Hose?

PTFE lossis polystetrafluoroethylene yog ib qho ntawm cov ntaub ntawv feem ntau cov tshuaj tiv thaiv muaj. Qhov no ua rau cov Hosfe PTFE kom ua tiav nyob rau hauv ntau qhov kev lag luam uas ntau cov kev ua yeeb yam lossis roj hmab hoses yuav swb. Khub qhov no nrog ntau thiab yooj yim kub (-70 ° C txog + 260 ° C) thiab koj xaus nrog ib tug heev uas muaj qee qhov chaw hnyav.

Qhov kev sib txhuam cov khoom ntawm PTFE cia muab cov nqi ntws los txhim kho cov nqi ntws thaum thauj cov khoom siv viscous. Qhov no tseem ua rau muaj kev tsim kho kom huv thiab tseem ceeb tsim ib 'Liner' Liner, ua kom cov khoom tawm sab laug tau los yog ntxuav kom deb.