Cov khoom ntawm cov khoom siv roj hmab yog raws li nram no. Cov yam ntxwv ntawm cov khoom siv roj hmab:
1, nrog siab elastic roj hmab elastic modulus yog me me, feem ntau nyob rau hauv 1-9.8mpa. Loj elongation deformation, elongation tuaj yeem ncav cuag 100 feem pua, tseem muaj cov yam ntxwv ntawm kev rov qab los, thiab tuaj yeem tuav elasticity nyob rau hauv ntau qhov kub thiab txias (-50- ntxiv rau 150 degree ).
2. Viscoelastic roj hmab yog lub cev viscoelastic. Vim muaj qhov sib txawv ntawm cov quab yuam, cov roj hmab yog raug rau sab nraud quab yuam, thiab deformation cuam tshuam los ntawm lub sij hawm, kub thiab lwm yam kev mob, qhia pom tseeb kev nyuaj siab so thiab creep phenomenon.
3, nrog rau cov nyhuv damping ntawm cov roj hmab ntawm kev sib kis ntawm lub suab thiab kev co muaj kev cuam tshuam zoo, tuaj yeem siv cov yam ntxwv no los tiv thaiv lub suab nrov thiab kev co.
4, nrog hluav taws xob rwb thaiv tsev roj hmab thiab yas yog cov khoom siv hluav taws xob rwb thaiv tsev. Piv txwv li, cov roj hmab ntuj thiab butyl roj hmab thiab ntim kuj tuaj yeem ncav cuag 10
5, qhov kub thiab txias nyob ntawm cov ntaub ntawv polymer feem ntau cuam tshuam los ntawm qhov kub thiab txias, roj hmab ntawm qhov kub tsis tshua muaj nyob rau hauv lub iav ntawm lub zog thiab nkig, thaum kub kub yog softening, melting, thermal oxidation, thermal decomposition thiab combustion.
6, nrog rau kev laus tshwm sim, xws li hlau corrosion, ntoo lwj, pob zeb huab cua, roj hmab kuj yuav laus vim kev hloov nyob rau hauv ib puag ncig tej yam kev mob, thiaj li hais tias cov kev ua tau zoo deteriorates thiab cov kev pab cuam lub neej yog luv luv.
7, yuav tsum tau vulcanized roj hmab yuav tsum tau ntxiv sulfur los yog lwm yam muaj peev xwm vulcanize roj hmab (los yog crosslinked) tshuaj, kom cov roj hmab macromolecules crosslinked rau hauv qhov chaw network qauv, thiaj li yuav muaj nqi ntawm cov khoom siv roj hmab, tab sis cov roj hmab thermoplastic tsis tuaj yeem vulcanized.
1, Cov roj hmab ntuj (NR) feem ntau yog roj hmab hydrocarbon (polyisoprene), uas muaj me me ntawm cov protein, dej, resin acid, qab zib thiab inorganic ntsev, yog ib yam khoom uas tsis yog-polar, nws yog yaj nyob rau hauv non-polar solvents thiab roj. Siab elasticity, siab tensile zog, zoo tsim kua muag kuj thiab hluav taws xob rwb thaiv tsev, zoo hnav tsis kam thiab drought kuj, zoo workability, yooj yim rau kev sib raug zoo nrog lwm cov ntaub ntawv, zoo dua li feem ntau hluavtaws roj hmab hauv kev ua tau zoo. Qhov tsis zoo yog tias cov pa oxygen tsis kam thiab ozone kuj tsis zoo, yooj yim rau kev laus metamorphism; Roj kuj thiab hnyav kuj tsis zoo, nyob rau hauv cyclohexane, roj av, tuab, ua ntej curing yaj, tom qab kho o. Kev tiv thaiv rau cov kua qaub thiab alkali corrosion muaj peev xwm tsawg, tsis kam mus rau 10 feem pua hydrofluoric acid, 20 feem pua hydrochloric acid, 30 feem pua sulfuric acid, 50 feem pua sodium hydroxide; Lub tshav kub kuj tsis siab. Kev khiav hauj lwm kub: txog -60 degree ~ ntxiv rau 80 degree . Kev tsim cov log tsheb, khau roj hmab, roj hmab hose, daim kab xev, xaim thiab cable rwb thaiv tsev thiab sheathing thiab lwm yam khoom siv dav dav. Tshwj xeeb tshaj yog tsim rau kev tsim khoom ntawm torsional vibration eliminator, engine shock absorber, machine support, rubber - hlau ncua kev kawm ntawv Cheebtsam, diaphragm, molded khoom.
2, styrene butadiene roj hmab (SBR) thiab styrene copolymer. Qhov kev ua tau zoo yog ze rau cov roj hmab ntuj, yog cov khoom siv loj tshaj plaws ntawm cov roj hmab hluavtaws, nws cov yam ntxwv muaj ntau dua hnav tsis kam, kev laus ua haujlwm thiab kub ua haujlwm dua li cov roj hmab ntuj, thiab kev ntxhib los mos yog ntau dua li cov roj hmab ntuj. Qhov tsis zoo yog: tsis tshua muaj elasticity, tsis zoo rau flexure thiab tsim kua muag, loj thaum tshav kub kub tsim nyob rau hauv ntau yam deformation, tsis zoo ntawm cov roj kuj, tshav kub kuj thiab tshwj xeeb hom nruab nrab; Cov cuab yeej ua haujlwm tsis zoo, tshwj xeeb tshaj yog tus kheej-viscosity yog qhov tsis zoo, cov roj hmab nyoos muaj zog tsawg. Ua haujlwm kub ntau: txog -50 degree ~ ntxiv rau 100 degree . Nws yog tsuas yog siv los ua cov log tsheb, roj hmab daim hlau, roj hmab hose, khau roj hmab thiab lwm yam khoom siv tsis siv roj hmab ntuj.
3, butadiene roj hmab (BR) yog ua los ntawm butadiene polymerization ntawm cis-structure roj hmab, tsis muaj plasticizing, belongs rau polar tshuaj. Qhov zoo yog: zoo elasticity thiab hnav tsis kam, zoo aging kuj, zoo heev uas tsis muaj kub tsis kam, tsis tshua muaj kub nyob rau hauv dynamic load, yooj yim hlau bonding, zoo tshuaj stability, muaj peev xwm tiv taus corrosion ntawm cov tshuaj feem ntau tsuas yog muaj zog acid. Qhov tsis zoo yog lub zog tsis muaj zog, ua kua muag tsis zoo, kev ua haujlwm tsis zoo thiab nws tus kheej viscosity. Kev khiav hauj lwm kub: txog -60 degree ~ ntxiv rau 100 degree . Feem ntau thiab ntuj roj hmab los yog styrene butadiene roj hmab thiab cov khoom tseem ceeb ntawm cov log tsheb tread, thauj siv thiab cov khoom txias tshwj xeeb.
4. Isoprene roj hmab (IR) yog ib qho cis-structured rubber synthesized los ntawm isoprene monomer. Cov tshuaj muaj pes tsawg leeg thiab cov qauv peb-seem zoo ib yam li cov roj hmab ntuj, thiab qhov kev ua tau zoo kuj tseem nyob ze rau cov roj hmab ntuj, yog li nws yog hu ua hluavtaws roj hmab. Nws muaj feem ntau ntawm qhov zoo ntawm cov roj hmab ntuj, kev laus ua haujlwm vim tias cov roj hmab ntuj, elasticity thiab lub zog yog me ntsis qis dua cov roj hmab ntuj, kev ua haujlwm tsis zoo, tus nqi siab. Siv qhov kub thiab txias: li ntawm -50 degree ~ ntxiv rau 100 degree tuaj yeem hloov cov roj hmab ntuj los ua cov log tsheb, khau roj hmab, roj hmab hose, daim kab xev thiab lwm yam khoom siv dav dav.
5, chloroprene roj hmab (CR) yog tsim los ntawm chloroprene ua monomer emulsion polymerization ntawm polymerization. Cov roj hmab molecule no muaj cov tshuaj chlorine atoms, yog li muab piv nrog rau lwm cov roj hmab universal: nws muaj cov pa oxygen zoo heev, ozone tsis kam, tsis-flammable, nws tus kheej tua tom qab hluav taws, roj tsis kam, hnyav tsis kam, acid thiab alkali tsis kam, aging kuj, zoo huab cua nruj. thiab lwm yam zoo; Nws lub cev thiab cov khoom siv kho tshuab zoo dua li cov roj hmab ntuj, yog li nws tuaj yeem siv los ua cov roj hmab dav dav, kuj tuaj yeem siv los ua cov roj hmab tshwj xeeb. Lub ntsiab qhov tsis zoo yog qhov tsis zoo ntawm qhov txias txias, kev faib ua feem loj, tus nqi txheeb ze, hluav taws xob rwb thaiv tsev tsis zoo, yooj yim rau lo dov, yooj yim rau hlawv thiab yooj yim rau lo pwm ua. Tsis tas li ntawd, cov roj hmab nyoos ruaj khov tsis zoo, tsis yooj yim rau khaws cia. Kev khiav hauj lwm kub: txog -45 degree ~ ntxiv rau 100 degree . Nws yog tsuas yog siv rau kev tsim cov cable sheathing nrog siab ozone kuj thiab kev laus tsis kam thiab ntau yam kev tiv thaiv sheaths thiab tiv thaiv npog. Roj thiab tshuaj resistant hose, daim kab xev thiab tshuaj hauv ob sab phlu; Inflammable underground mining roj hmab cov khoom, nrog rau ntau yam molded khoom, sealing rings, pads, adhesives, xws li: tsev waterproof ntawv, tsev sealing sawb, txoj kev loj caulking cov ntaub ntawv, choj txhawb gaskets, hlau wrapping, thiab lwm yam.
