NR Roj Hmab Ntuj
Cov Roj Hmab Ntuj yog cov polymer ntawm isoprene, ua los ntawm cov roj hmab sau los ntawm cov ntoo roj hmab. Nws muaj zoo hnav tsis kam, siab elasticity, tawg lub zog thiab elongation. Nws yog qhov yooj yim rau kev laus hauv huab cua, khov hauv tshav kub, yooj yim nthuav thiab yaj hauv roj ntxhia lossis roj av, alkali-resistant tab sis tsis muaj zog acid-resistant. Qhov zoo: zoo elasticity, acid thiab alkali tsis kam. Qhov tsis zoo: Cov huab cua-resistant, roj-resistant (zaub roj) yog cov khoom siv raw ua cov ntaub nplaum roj hmab, hose, khau roj hmab, thiab nws tsim nyog rau ua rau cov khoom nqus poob siab, cov khoom siv hauv tsheb nres cov roj, ethanol thiab lwm yam kua nrog hydroxyl radicals. Cov.
SBR
Styrene Butadiene Copolymer yog tus kws luam ntawv ntawm butadiene thiab styrene. Piv nrog cov roj hmab ntuj, cov copolymer muaj cov tsoos tsis zoo, tsawg dua lub cev txawv teb chaws, hnav zoo dua qub thiab kev laus tiv taus, tab sis nws lub zog ua haujlwm tsis muaj zog thiab tuaj yeem xyaw nrog roj hmab ntuj. Cov txiaj ntsig zoo: Cov nqi hluav taws xob tsis zoo ntawm cov khoom siv roj-resistant, zoo dej tsis kam, zoo elasticity nyob hauv 70 hardness, tsis yooj yim ntawm qhov hardness. Kev tsis zoo: cov roj acids, lub ozone, roj, esters, cov rog thiab cov roj hydrocarbons feem ntau tsis pom zoo. Nws yog dav siv hauv kev lag luam log tsheb, khau kev lag luam, kev lag luam ntaub thiab kev lag luam siv khoom siv conveyor.
IIR
Cov roj butyl yog cov polymer ntawm isobutene thiab isoprene me me. Vim tias qhov txav ntawm cov nplawm txheej txheem cov txheej txheem ntawm cov methyl yog tsawg dua li ntawm lwm cov polymers, nws muaj cov roj permeability tsawg dua, muaj peev xwm tiv taus ntau dua thaum tshav kub kub, tshav ntuj thiab huab cua, thiab zoo dua hluav taws xob rwb thaiv tsev. Nws muaj qhov zoo tsis kam mus rau qhov muaj zog polar, thiab nws qhov kub ntau yog - 54 - 110 C. Qhov Zoo: Nws yog qhov tsis yooj yim rau cov roj cua feem ntau, thiab muaj cov tsis kam tiv taus rau hnub ci thiab tsw. Nws tuaj yeem raug cov tsiaj lossis zaub roj lossis cov tshuaj lom neeg. Qhov tsis zoo: Nws tsis pom zoo siv lub raj sab hauv, hnab tawv, roj hmab muab ntawv, lub qhov rai roj hmab, chav hlev, cov khoom siv tiv thaiv thaum tshav kub kub nrog roj av roj, roj av thiab ntxhiab hydrogen.
NBR
NBR yog ib hom NBR uas tshem ib feem ntawm ob txoj hlua txuas ntxiv tom qab hydrogenation. Tom qab hydrogenation, nws qhov kub tsis kam thiab weatherability muaj ntau dua li cov ntawm NBR zoo tib yam, thiab nws cov roj tsis kam yog zoo li qhov zoo tib yam ntawm NBR. Feem ntau, qhov kub thiab txias yog - 25 ~ 150 C. Qhov Zoo: Sib piv nrog NBR, NBR tau zoo dua qub dua kev tiv thaiv, kev tiv thaiv zoo tiv thaiv corrosion, ua hauj tsis kam, kua muag tsis kam thiab cov khoom tawg.
Ozone thiab lwm yam huab cua muaj qhov zoo tiv thaiv, feem ntau haum rau ntxhua khaub ncaws lossis tshuab ntxuav tais diav. Qhov tsis zoo: Nws tsis pom zoo siv hauv lub tshuab cua txias thiab tub yees hauv kev lag luam cawv, esters lossis cov tshuaj tsw qab. Nws yog dav siv nyob rau hauv qhov chaw sib khi ntawm ib puag ncig refrigerant R134a system. Cov ntsaws ruaj ruaj rau cov cav tsheb cav.
EPDM
Ethylene propylene Roj Hmab (EPDM) yog copolymerization ntawm ethylene thiab propylene, yog li nws cov cua sov tsis kam, kev laus tiv taus, ozone tsis kam thiab kev ruaj khov yog qhov zoo heev, tab sis leej faj tsis tuaj yeem ntxiv. Txhawm rau daws qhov teeb meem no, qhov me me ntawm ntu thib peb nrog ob txoj sia txuas tau qhia rau hauv EP txoj saw tseem ceeb, thiab EPDM tuaj yeem ua tau los ntawm kev ntxiv leej faj. Feem ntau, qhov kub thiab txias yog - 50 - 150 C. Zoo heev tiv taus cov ncov qaumteb qabteb xws li dej cawv thiab ketone: huab cua tsis kam thiab huab cua tsis kam, zoo heev dej tsis kam thiab tshuaj tiv thaiv, cawv thiab ketone siv tau, siab kub vapor kuj, roj zoo impermeability. Qhov tsis zoo: Tsis pom zoo rau kev siv zaub mov lossis raug rau cov tshuaj tsw qab hydrogen. Cov ntsaws ruaj ruaj rau qhov chaw muaj dej kub vapor ib puag ncig. Cov ntsaws ruaj ruaj lossis cov khoom siv rau chav dej. Roj hmab ntu hauv qhov system nres. Cov ntsaws ruaj ruaj hauv lub tshuab hluav taws xob (tsheb tso tsheb hlau luam).
NBR
Nitrile Roj Hmab yog cov tshuaj los ntawm cov copolymerization ntawm acrylonitrile thiab butadiene. Cov ntsiab lus acrylonitrile nyob ntawm 18% txog 50%. Qhov siab dua ntawm acrylonitrile cov ntsiab lus, qhov zoo dua cov kev cuam tshuam rau petrochemical hydrocarbon roj roj, tab sis qis dua qis kub ua haujlwm. Feem ntau, qhov kub thiab txias yog - 25 ~ 100 C. Butadiene roj hmab yog ib qho siv roj hmab feem ntau siv rau roj foob thiab O-ntiv nplhaib tam sim no. Nws muaj cov khoom zoo ntawm cov roj tsis kam, tiv thaiv dej, tiv thaiv hnyav thiab lub siab cov roj siab tsis kam. muaj zoo txaus, hnav tsis kam thiab elongation.
Qhov tsis zoo: Tsis haum rau cov kuab tshuaj polar, xws li ketones, ozone, nitrohydrocarbons, MEK thiab chloroform. Nws yog siv rau kev ua cov roj tank, Lubricating Tank thiab roj hmab qhov chaw, tshwj xeeb tshaj yog qhov chaw sib khi, siv nyob rau hauv cov xov xwm tso kua roj xws li roj roj, roj av, dej, silicone roj thiab diester lubricating roj ntawm roj av system. Nws tuaj yeem hais tau tias cov roj hmab ntsaws ruaj ruaj yog qhov siv dav tshaj plaws thiab tus nqi qis tshaj tam sim no.
CR
Neoprene thiab Polychloroprene tsim kho los ntawm polymerization ntawm chloroprene monomers. Cov roj hmab vulcanized muaj qhov zoo elasticity, hnav tsis kam, tsis muaj kev ntshai ntawm lub hnub ncaj qha, huab cua tsis kam tiv thaiv zoo, tsis muaj kev ntshai ntawm lub nraub qaum, tsis muaj kev ntshai ntawm cov tub yees, dilute acid, silicone ester roj nplua nyeem, tab sis tsis phosphate ester hydraulic roj. Nws yog qhov yooj yim rau crystallize thiab tawv ntawm qhov kub tsawg, thiab muaj cov khoom ntim tsis zoo. Nws muaj qhov nthuav dav loj hauv cov roj ntxhia nrog cov roj tsis muaj lub zog. Feem ntau, qhov kub thiab txias yog - 50 ~ 150 C. Cov txiaj ntsig zoo: Zoo elasticity thiab zoo compression deformation, cov mis tsis muaj leej faj, yog li nws yooj yim los ua. Nrog rau cov khoom siv los tiv thaiv cov tsiaj thiab roj, tsis yog vim muaj cov tshuaj nruab nrab, cov rog, roj, muaj roj ntau yam, cov kuab tshuaj thiab cuam tshuam rau lub cev, nrog cov nplaim hluav taws.
Qhov tsis zoo: Nws tsis pom zoo kom siv cov khoom sib khi uas tiv taus R12 tub yees nyob rau hauv cov kua qaub muaj zog, nitrohydrocarbons, esters, chloroform thiab ketones, roj hmab ntu lossis ntim ntawm cov khoom siv hauv tsev. Haum rau kev ua txhua yam ntawm cov ntu uas cuam tshuam ncaj qha nrog cov huab cua, tshav ntuj thiab dej hiav txwv. Nws yog qhov tsim nyog rau txhua hom khoom siv hluav taws kub thiab tsis muaj tshuaj lom neeg.