Imbali ye-POLYTETRAFLUOROETHYLENE yaqala ngo-Aprili 6, 1938 eDu Pont's Jackson Laboratory eNew Jersey. Ngolo suku lwethamsanqa, uGqr. Roy J. Plunkett, owayesebenza ngeegesi ezinxulumene neefriji zeFREON, wafumanisa ukuba isampuli enye ipholymerised ngokuzenzekelayo ukuya kumhlophe, okuqinileyo okune-waxy.

Uvavanyo lubonise ukuba esi siqina sisixhobo esiphawuleka kakhulu. Yayiyintlaka ekwaziyo ukumelana nayo yonke imichiza okanye isinyibilikisi esaziwayo; ubuso bawo babumtyibilizi kangangokuba akukho nto inokubambelela kuwo; ukufuma akuzange kubangele ukuba idumbe, kwaye ayizange ithobeke okanye ibe rhabaxa emva kokuchanabeka ixesha elide elangeni. Yayine-melting point ye-327 ° C kwaye, ngokuchasene ne-thermoplastics eqhelekileyo, ayiyi kuhamba ngaphezu kwelo nqanaba lokunyibilika. Oku kwakuthetha ukuba ubugcisa obutsha bokusetyenzwa kufuneka buphuhliswe ukuze buhambelane neempawu zentlaka entsha – awathi uDu Pont wayibiza ngokuba yiTEFLON.

Iindlela zokuboleka kwi-powder metallurgy, iinjineli zaseDu Pont zazikwazi ukucinezela kunye ne-sinter POLYTETRAFLUOROETHYLENE resins kwiibhloko ezinokuthi zenziwe ngomatshini ukwenza nayiphi na imilo efunekayo. Emva kwexesha, i-resin emanzini yaphuhliswa ukuze igqume ilaphu leglasi kwaye yenze i-enamels. Kwaveliswa umgubo onokuthi udityaniswe nesithambiso kwaye ukhutshelwe ukogquma ucingo kunye nokwenza iityhubhu.

Ngo-1948, iminyaka eyi-10 emva kokufunyanwa kwe-POLYTETRAFLUOROETHYLENE, uDu Pont wayefundisa iteknoloji yokucubungula kubathengi bayo. Kungekudala isityalo sorhwebo sasisebenza, kwaye i-POLYTETRAFLUOROETHYLENE PTFE resins yafumaneka kwii-dispersions, i-granular resins kunye ne powder fine.

Kutheni ukhetha iHose ye-PTFE?

I-PTFE okanye iPolytetrafluoroethylene yenye yezona zinto zixhathisayo kwikhemikhali ezikhoyo. Oku kwenza ukuba imibhobho ye-PTFE iphumelele phakathi koluhlu olubanzi lwamashishini apho imibhobho yesinyithi okanye irabha engaphezulu inokusilela. Dibanisa oku kunye noluhlu olugqwesileyo lobushushu (-70 ° C ukuya +260 ° C) kwaye ugqibela ngombhobho owomelele kakhulu okwaziyo ukumelana nezona ndawo zinzima.

Iipropati ezingenakukhuhlane ze-PTFE zivumela amazinga okuhamba aphuculweyo xa kuthuthwa imathiriyeli ye-viscous. Oku kukwanegalelo kuyilo olucoceke lula kwaye ngokusisiseko lwenza ilineni 'engadibaniyo', ukuqinisekisa ukuba imveliso eshiyekileyo inokuzikhupha okanye ikhukuliswe ngokulula.