FKM Cov

Loj: Standard thiab customized ua

Khoom siv: Hom A, Hom B, Hom F, FEPM, AFLAS, ETP, GLT, GFLT, peroxide kho FKM, FFKM, thiab lwm yam

Jiacheng Cov Khoom Tshiab (SJK) yog lub Hoobkas uas feem ntau tsom rau FKM cov ntsaws ruaj ruaj. FKM orings yog ib qho ntawm peb cov khoom raug, thiab muaj ntau tshaj 90 feem pua ​​​​ntawm Tshuag, suav nrog tus qauv DIN 3771, SAE AS 568, JIS B2401.

TXOJ CAI

Zoo stability

Fluoroelastomer muaj tshuaj lom neeg ruaj khov, thiab yog ib qho zoo tshaj plaws xov xwm tiv thaiv elastomers tam sim no [1]. Hom 26 fluororubber yog resistant rau roj av raws roj, roj diester, silicone ether roj, silicic acid roj, inorganic acids, feem ntau cov organic thiab inorganic kuab tshuaj, tshuaj, thiab lwm yam., tsuas yog tsawg molecular ketones, ethers, esters, amine, ammonia, hydrofluoric acid. , chlorosulfonic acid, phosphoric acid hydraulic roj. Qhov nruab nrab kev ua tau zoo ntawm 23 hom fluorine nplaum zoo ib yam li 26 hom, thiab nws muaj ntau yam tshwj xeeb. Nws kuj muaj zog oxidizing inorganic acids xws li fuming nitric acid thiab concentrated sulfuric acid yog zoo dua li ntawm 26 hom fluorine nplaum. Nws qhov ntim nthuav dav tsuas yog 13 feem pua ​​~ 15 feem pua ​​​​tom qab immersion hauv 98 feem pua ​​​​HNO3 ntawm chav tsev kub rau 27 hnub.

Kub kub kuj

Fluoroelastomer muaj qhov kub thiab txias zoo ib yam li cov roj hmab silicone, uas tuaj yeem hais tias yog qhov zoo tshaj plaws elastomer tam sim no. 26-41 fluororubber tuaj yeem siv tau ntev ntawm 250 degree thiab luv luv ntawm 300 degree ; Lub tshav kub tsis kam ntawm 246 fluorine kua nplaum zoo dua li 26-41. Ntawm 300 degree × Lub cev muaj zog ntawm 26-41 tom qab 100h huab cua thermal aging thiab 300 degree × Tom qab 100 teev ntawm huab cua kub laus, cov khoom ntawm Hom 246 yog sib npaug, thiab nws qhov elongation ntawm kev tawg tuaj yeem tswj tau li ntawm 100 feem pua, thiab nws hardness yog 90 ~ 95 degrees. Hom 246 tuav zoo elasticity tom qab laus hauv huab cua kub ntawm 350 degree rau 16 teev, thiab tom qab laus hauv huab cua kub ntawm 400 degree rau 110 feeb. Tom qab kev laus hauv huab cua kub ntawm 400 degree rau 110 feeb, lub elongation ntawm cov roj hmab uas muaj cov pa roj carbon dub, kub cracking carbon dub los yog carbon fiber nce li ntawm 1 / 2 ~ 1 / 3, thiab lub zog txo los ntawm 1/2, uas tseem tuav zoo elasticity. 23-11 hom fluorine kua nplaum tuaj yeem siv tau ntev ntawm 200 degree thiab luv luv ntawm 250 degree .

Kev laus tsis kam

Fluoroelastomer muaj huab cua aging kuj thiab ozone kuj. Nws tau tshaj tawm tias qhov kev ua tau zoo ntawm Viton A tsim los ntawm DuPont tseem yog qhov txaus siab tom qab kaum xyoo ntawm kev khaws cia, thiab tsis muaj qhov pom tseeb tawg tom qab 45 hnub hauv huab cua nrog 0.01 feem pua ​​​​ozone concentration. 23 hom fluororubber muaj huab cua zoo tiv thaiv kev laus thiab kev tiv thaiv ozone.

Lub tshuab nqus tsev ua haujlwm

Hom 26 fluororubber muaj lub tshuab nqus tsev zoo heev. Lub tshuab nqus tsev tawm tus nqi ntawm vulcanizate ntawm 246 fluororubber yooj yim formula tsuas yog 37 × 10-6 ml / (sec * cm ^ 2). Hom 246 fluororubber tau ua tiav tiav raws li lub tshuab nqus tsev ntawm 10-9 Torr.

Mechanical zog

Fluoroelastomer muaj lub cev zoo thiab txhua yam khoom. Lub zog ntawm hom 26 fluororubber feem ntau yog 10 ~ 20MPa, qhov elongation ntawm tawg yog 150 ~ 350 feem pua, thiab lub kua muag tsis kam yog 3 ~ 4KN / m. Lub zog ntawm 23 hom fluororubber yog 15.0 ~ 25MPa, lub elongation yog 200 feem pua ​​~ 600 feem pua, thiab lub kua muag kuj yog 2 ~ 7MPa. Feem ntau, compression mus tas li deformation ntawm fluororubber ntawm qhov kub thiab txias yog qhov loj. Txawm li cas los xij, yog tias piv rau tib lub sijhawm, xws li compression mus tas li deformation ntawm 150 degree rau tib lub sijhawm, compression ruaj khov deformation ntawm neoprene thiab neoprene roj hmab yog loj dua li hom 26 fluororubber, thiab hom 26 fluororubber yog 200 degree. × Lub compression deformation nyob rau hauv 24 teev yog sib npaug rau cov roj hmab polybutadiene ntawm 150 degree × 24 teev compression deformation.

Kev ua haujlwm hluav taws xob

Hom 23 fluororubber muaj cov khoom siv hluav taws xob zoo dua thiab kev nqus dej tsawg dua li lwm cov elastomers, yog li nws tuaj yeem siv los ua cov khoom siv hluav taws xob zoo dua. Hom 26 roj hmab tuaj yeem siv nyob rau hauv qis zaus thiab tsis tshua muaj siab.

TSIS TXAUS SIAB

Tsawg permeability

Cov roj hmab fluorine muaj cov roj solubility loj heev, tab sis nws qhov nrawm nrawm yog me me, yog li nws cov permeability tag nrho kuj me me. Nws tau tshaj tawm tias qhov permeability ntawm hom 26 fluororubber rau oxygen, nitrogen, helium thiab carbon dioxide ntawm 30 degree yog sib npaug rau cov roj hmab butyl thiab polybutadiene roj hmab, thiab zoo dua li cov roj hmab chloroprene thiab roj hmab ntuj.

Tsawg kub ua haujlwm

The low temperature performance of fluororubber is poor, which is due to its own chemical structure, such as the Tg of 23-11 type>0 degree. Qhov ntsuas kub qis ntawm qhov tseeb fluororubber feem ntau qhia los ntawm qhov kub thiab txias compression coefficient. Cov mis ntawm cov roj hmab sib xyaw thiab cov duab ntawm cov khoom (xws li thickness) muaj kev cuam tshuam zoo rau lub brittleness kub. Yog hais tias tus nqi ntawm cov muab tub lim nyob rau hauv cov mis nce, lub brittleness kub yuav rhiab heev rau deterioration, thiab yog hais tias lub thickness ntawm cov khoom nce, lub brittleness mixing degree kuj yuav rhiab heev rau deterioration.

Kev tiv thaiv hluav taws xob

Cov hluav taws xob tiv thaiv ntawm fluororubber yog ib qho ntawm cov elastomers phem dua. Hom 26 roj hmab qhia pom qhov sib txuas txuas tom qab hluav taws xob, thiab hom 23 fluororubber qhia cov nyhuv tawg. Cov hluav taws xob ntawm 246 fluororubber nyob rau hauv huab cua ntawm chav tsev kub yog 5 × Qhov kev ua tau zoo hloov pauv ntawm qhov koob tshuaj 107R ntawm 1 × Lub hardness nce los ntawm 1 ~ 3 degrees, lub zog txo qis dua 20 feem pua, thiab elongation txo los ntawm 30 feem pua. ~ 50 feem pua ​​​​hauv qhov xwm txheej ntawm 107 degree . Yog li, nws feem ntau ntseeg tias 246 fluororubber tuaj yeem tiv taus 1 × 107R, txwv yog 5 × 107R.

Cim npe nrov: fkm lus