Key Difference – Buna N vs Viton
Buna N thiab Viton yog cov npe lag luam rau butadiene-acrylonitrile (nitrile roj hmab) thiab vinylidene fluoride-hexafluoropropylene copolymer, feem. Ob leeg elastomers no tau siv dav siv hluavtaws elastomers uas muaj cov khoom tshwj xeeb ntawm lub cev thiab tshuaj lom neeg. Qhov sib txawv tseem ceeb ntawm Buna N thiab Viton yog Buna N yog ib qho copolymer ntawm butadiene thiab acrylonitrile, whereas Viton yog ib qho copolymer uas muaj ntau cov fluorine-muaj units. Vim qhov sib txawv ntawm cov qauv tshuaj ntawm ob cov ntaub ntawv no, lawv nthuav tawm cov khoom sib txawv, uas yuav tau tham hauv tsab xov xwm no.
Buna N yog dab tsi?
Buna N® yog lub npe lag luam ntawm Pittway Corporation, Chicago rau nitrile roj hmab lossis NBR, uas yog tsim los ntawm polymerization ntawm ob chav monomer: acrylonitrile thiab butadiene. Qhov sib piv monomer sib txawv nyob ntawm qhov xav tau ntawm cov khoom kawg. Feem ntau, cyanide pab pawg hauv acrylonitrile pab txhim kho cov roj thiab hnyav ua haujlwm; Yog li, tus nqi ntawm acrylonitrile txiav txim siab cov roj tsis kam ntawm Buna N.
Daim duab 01: Nitrile Butadiene Rubber
Buna N tuaj yeem ua haujlwm hauv ntau qhov kub ntawm - 40 ° C txog 120 ° C; Qhov no ua rau Buna N siv rau hauv kev siv tsheb loj xws li hoses, ntsaws ruaj ruaj, siv hlua, roj foob, thiab lwm yam. Txij li thaum, Buna N tiv taus hydrocarbon solvents esters, ketones, thiab aldehydes; nws yog dav siv los ua cov hnab looj tes kuaj. Buna N kuj yog siv los ua cov nplaum, ua npuas ncauj, ntaub pua plag, tawv hluavtaws, thiab khau.
Viton yog dab tsi?
Viton® yog lub npe lag luam ntawm DuPont DOW Elastomers L. L. C, Wilmington rau tshwj xeeb fluoroelastomer, uas muaj ntau cov fluorine-muaj units. Viton muaj cov tshuaj tiv thaiv zoo heev rau cov kua qaub thiab alkalis, qhov kub thiab txias tsis kam (txog 275-300 ° C rau lub sijhawm luv), oxidation zoo heev, thiab zoo tiv thaiv roj muaj li 30% ntawm aromatics. Muaj ntau qib ntawm Viton hauv kev ua lag luam rau lub hom phiaj dav dav thiab lub hom phiaj tshwj xeeb. Cov hom phiaj ntawm Viton cov qib yog Viton® A, Viton® B, thiab Viton® F, thiab Cov hom phiaj tshwj xeeb Viton qib suav nrog GB, GBL, GF, GLT, thiab GFLT. Tag nrho cov qib no tuaj yeem npog ntau yam kev tsim khoom xws li kev txhaj tshuaj thiab hloov pauv molding, compression molding, daim ntawv qhia hnub, thiab extrusion.
Daim duab 02: Viton Seals
Viton A yog tsim los ntawm polymerization ntawm vinylidene fluoride (VF 2) thiab hexafluoropropylene (HFP). Nws yog siv rau kev molded o-rings, gaskets, thiab lwm yam yooj yim thiab complex zoo li tus molded khoom. Viton B yog polymerized los ntawm peb lub monomers, suav nrog vinylidene, hexafluropropylene, thiab tetrafluoroethylene. Viton B muaj cov khoom ua kua dej zoo dua li Viton A. Viton F kuj yog tsim los ntawm polymerization ntawm peb monomers vinylidene, hexafluropropylene, thiab tetrafluoroethylene thiab muaj cov kua dej resistant zoo dua ntawm tag nrho lwm cov qib Viton; Yog li, nws yog qhov tseem ceeb hauv kev siv roj permeation resistant. Viton GBL yog ua haujlwm rau chav, kua qaub thiab cov roj cav, thiab Viton GLT qhia tau hais tias muaj cua sov thiab tshuaj tiv thaiv, thiab qhov kub thiab txias. Viton GFLT muaj cov cua kub kub thiab cov tshuaj tiv thaiv zoo tshaj plaws thiab siv rau hauv cov ntawv ua haujlwm siab. Ob leeg Viton GLT thiab GFLT muaj qhov hloov pauv iav qis dua piv rau cov hom phiaj dav dav Viton.
Qhov txawv ntawm Buna N thiab Viton yog dab tsi?
Buna N vs Viton |
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| Buna N yog lub npe lag luam rau nitrile roj hmab / NBR. | Viton yog lub npe lag luam rau fluoroelastomer. |
| Monomers siv hauv Kev Tsim Khoom | |
| Acrylonitrile thiab butadiene yog siv los tsim Buna N. | Vinylidene fluoride, hexafluoropropylene, thiab tetrafluoroethylene yog siv los tsim Viton. |
| khoom | |
| Buna N yog roj thiab hnyav resistant. | Viton muaj qhov kub thiab txias tsis kam thiab tshuaj lom neeg. |
| Buna N muaj qhov kub thiab txias txog li 120 ° C. | Viton muaj qhov kub thiab txias txog li 300 ° C. |
| Special Applications | |
| Buna N yog siv los tsim cov ntsaws ruaj ruaj, kuaj hnab looj tes, roj twj, thiab lwm yam. | Viton yog siv rau hauv kev siv tsheb loj xws li gaskets, seals, cov khoom siv hauv chav ua noj, thiab lwm yam. |
Summary – Buna N vs Viton
Ob Buna N thiab Viton yog cov cim lag luam ntawm ob qho tseem ceeb hluavtaws elastomers: nitrile roj hmab thiab fluoroelastomer, feem. Buna N yog tsim los ntawm copolymerization ntawm acrylonitrile thiab butadiene, thiab muaj cov roj resistant zoo heev, whereas Viton yog tsim los ntawm copolymers ntawm vinylidene fluoride-hexafluoropropylene, thiab muaj zoo heev kub, tshuaj thiab oxidative resistant zog. Qhov no yog qhov txawv ntawm Buna N thiab Viton.
Download PDF Version of Buna N vs Viton
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv Ntawm Buna N thiab Viton.
