Tsanangudzo yakadzama yehunhu hwe nitrile rubber
Nitrile rabha icopolymer yebutadiene uye acrylonitrile, uye yakasanganiswa acrylonitrile yemukati ine mhedzisiro yakakosha pamichina yayo, inonamira zvimiro, uye kupisa kupisa.Maererano nehunhu hwebutadiene uye acrylonitrile monomers, butadiene ine polarity isina simba, nepo acrylonitrile ine polarity yakasimba.Naizvozvo, iyo yakawanda acrylonitrile yemukati pane iyo huru cheni yenitrile rubber, yakaipisisa kuchinjika kweketani huru.Iyo yakakwirira iyo yakaderera-tembiricha brittleness tembiricha, yakaipisisa yakaderera-tembiricha kuramba kuita;Kune rimwe divi, acrylonitrile ine yakanaka kupisa kupisa nekuti panguva yekudziya, acrylonitrile mu nitrile rabha inogona kuburitsa doro soluble zvinhu kuti inhibit thermal oxidative degradation.Nokudaro, kupisa kwekupisa kwe nitrile rubber kunowedzera nekuwedzera kwe acrylonitrile content;Zvichakadaro, nekuda kweiyo polarity factor yeacrylonitrile, kuwedzera zvirimo zveacrylonitrile zvinogona kuvandudza simba rekunamatira re nitrile rubber.Nokudaro, zvakakosha zvikuru kuedza zvinyorwa zvakasungwa acrylonitrile mu nitrile rubber.
Zvinyorwa zve acrylonitrile zvine simba guru pakuita kweNBR.The acrylonitrile content of general acrylonitrile nitrile rubber iri pakati pe15% ne50%.Kana iyo acrylonitrile ikawedzera kusvika pamusoro pe60%, ichaomesa, yakafanana neganda, uye haichazove nerubber properties.
1. Kuramba kwemafuta uye kushomeka kwemunyungudika: Nitrile rabha ine mafuta anopikisa murabha yakajairika.Nitrile rubber inoshingirira kumafuta epetroleum, benzene, nezvimwe zvinonyungudutsa zvisina polar pane natural rabha, styrene butadiene rubber, butyl rabha, nemamwe manon-polar rubber, asi zvakare iri nani pane polar chlorinated rabha.Zvisinei, rubha renitrile harina kumira zvakanaka kumafuta emu polar uye zvinonyungudutsa (senge ethanol), asi kusamira zvakanaka kune non-polar rabha.
2. Unhu hwekuita kwemuviri: Nitrile rubber inongova chimiro che nitrile copolymers iyo isinganyanyisi pasi pekutambudzika.Naizvozvo, izvo zvemuviri uye zvemagetsi zvimiro zve pure nitrile rabha vulcanized rabha zvakafanana neaya e styrene nitrile rabha, yakadzikira zvakanyanya pane yakasikwa rabha.Mushure mekuwedzera ekusimbisa mafirita senge kabhoni nhema uye phenolic resin, iyo inosimba simba re nitrile vulcanized rabha inogona kusvika padanho rerabha rechisikigo, kazhinji kutenderera 24.50mpa.Sezvo iyo polarity yemukati yeNBR inowedzera, kuchinjika kweiyo macromolecular chain inoderera, simba reatomu pakati pemamorekuru rinowedzera, kaviri zvisungo zvinodzikira, uye macromolecular chain is unsaturated, zvichikonzera kutevedzana kwekuita shanduko.Kana iyo ACN yemukati iri pakati pe35% ne40%, ndiyo yakakosha poindi yekumanikidza deformation, elasticity, uye kuoma pa75 ℃.Kana mafuta anopikisa achisangana nezvinodiwa, marudzi ane ACN asingasviki 40% anofanira kushandiswa zvakanyanya sezvinobvira.Iyo elasticity ye nitrile rabha idiki pane iyo yakasikwa rabha uye styrene butadiene rabha.Iyo elasticity yeNBR inowirirana zvakanyanya nekupisa.Kuenzaniswa neNBR, mukana wekushisa uye kuwedzera kwekuwedzera kwakakura.Naizvozvo, nitrile rubber yakanyatsokodzera kugadzira mashock absorbers ane high oil resistance.Hunhu hwehunyoro hwe nitrile rubber kuchinja nekusungwa kweacrylonitrile
3. Breathability: Nitrile rubber ine mhepo iri nani kupfuura yakasikwa rubber uye styrene butadiene rubber, asi haina kunaka se polysulfide rubber, iyo yakafanana nebutyl rubber.
4. Kuderera kwekushisa kwekushanda: Nitrile rubber ine urombo husina kusimba hunoita muhuwandu hwerabha.Iko kuderera-kupisa kwekushanda kunoenderana nemukati we acrylonitrile, uye girasi rekuchinja kwegirazi rinowedzera nekuwedzera kwe acrylonitrile content.Inogona kuderedza girazi rekushandura tembiricha ye nitrile rabha uye kuvandudza yayo yakaderera-tembiricha kuita.
5. Kupisa kupisa: Nitrile rubber ine nani kupisa kupisa kudarika rabha yepanyama uye styrene butadiene rubber.Nekusarudza fomura yakakodzera, zvigadzirwa zverubha zve nitrile zvinogona kushandiswa kuenderera pa120 ℃;Inogona kumira mafuta anopisa pa150 ℃;Mushure mekunyura mumafuta pa191 ℃ kwemaawa makumi manomwe, ichiri kugona kukotama.6. Ozone kuramba: Nitrile rabha ine urombo ozone resistance uye inowanzovandudzwa nekuwedzera ozone resistant agents.Zvisinei, zvigadzirwa zvinosangana nemafuta panguva yekushandiswa zvinowanzoita kubvisa ozone resistant agent uye kurasikirwa neozone yayo.Yakasanganiswa nePVC, mhedzisiro yacho yakakosha.
7. Kuramba kwemvura: Nitrile rubber ine mvura inodzivirira zviri nani.Iyo yakakwirira yezvinyorwa zveacrylonitrile, zviri nani kudzivirira kwayo kwemvura.
8. Electrical insulation performance: Nitrile rubber ine urombo husina kunaka hwemagetsi ekushanda nekuda kwe polarity yayo.Iyo ndeye semiconductor rubber uye haifanirwe kushandiswa sechinhu chekudzivirira.
9. Kuramba kuchembera: NBR isina anti-aging agents ine hurombo hwakanyanya hwekuchembera, nepo NBR ine anti-aging agents ine kuchembera kuri nani uye kupisa kupisa kupfuura rabha rechisikigo.Mushure mekuchembera kwemafuta oxidative, simba rekusimba rerabha rechisikigo rinodzikira zvakanyanya, asi kudzikira kwenitrile rabha kudiki kwazvo.
Kupisa kwekupisa kwe nitrile rubber kwakafanana nekuramba kwayo kuchembera.Kana L0000H zera pa100 ℃, kureba kwayo kunogona kuramba kuchipfuura 100%.Zvigadzirwa zverabha zveNitrile zvinogona kushandiswa kwenguva pfupi pa130 ° C uye zvinogona kushandiswa pakupisa kwepamusoro pasina oxygen.Naizvozvo, nitrile rabha ine zvirinani kupisa kupisa kupfuura yakasikwa rabha uye styrene butadiene rabha.Kunyanya kupfuura chloroprene rubber.Nitrile rabha ine mamiriro ekunze akafanana uye ozone kuramba serabha yechisikigo, asi yakaderera zvishoma pane yakasikwa rabha.Kuwedzera polyvinyl chloride kune nitrile rabha inogona kuvandudza mamiriro ekunze uye kuramba kwe ozone.
10. Radiation resistance:
Nitrile rabha inogonawo kukuvadzwa pasi pemwaranzi yenyukireya, zvichikonzera kuwedzera kwekuoma uye kudzikira kwekurebesa.Zvisineyi, zvichienzaniswa nemamwe marabha ekugadzira, NBR hainyanyi kukanganiswa nemwaranzi, uye NBR ine acrylonitrile ye33% -38% ine yakanaka yeradiation resistance.Mushure memagetsi enyukireya, simba rekusimba reNBR ine yakakwira acrylonitrile yemukati inogona kuwedzerwa ne140%.Izvi zvinodaro nekuti NBR ine yakaderera acrylonitrile yemukati inodzikisira pasi pemwaranzi, nepo NBR ine yakakwira acrylonitrile yemukati ichaita crosslinking reaction pasi pemwaranzi yenyukireya.
Kuita Tafura yeNitrile Rubber
| pfupiso | hunhu | chinangwa |
| Iyo copolymer inowanikwa ne lotion polymerization yebutadiene uye acrylonitrile inonzi butadiene acrylonitrile rubber, kana nitrile rabha kwenguva pfupi.Zviri mukati mayo chiratidzo chakakosha chinokanganisa zvinhu zve nitrile rubber.Uye inozivikanwa nekunaka kwayo mafuta kuramba. | Kupikiswa kwemafuta ndiko kwakanakisisa, uye haaputi mumafuta asina-polar uye asina simba epolar.Kupisa uye kukwegura kweokisijeni kuri nani kudarika kweanowanzo rubbers akadai sechisikigo uye butadiene styrene. Iyo ine yakanaka kupfeka kuramba, nekupfeka kuramba 30% -45% yakakwirira kupfuura yakasikwa rabha. Chemical corrosion resistance iri nani pane rabha yechisikigo, asi kuramba kwayo kune yakasimba oxidizing acids haina kunaka. Yakashata elasticity, kutonhora kuramba, flexural flexibility, kubvarura kuramba, uye yakanyanya kupisa chizvarwa nekuda kwedeformation. Kusashanda zvakanaka kwemagetsi ekudzivirira, ndeye semiconductor rabha, haina kukodzera kushandiswa semagetsi ekudzivirira zvinhu. Kusagadzikana kwe ozone. Kuita kwakashata kwekugadzirisa. | Anoshandiswa kugadzira hose dzerabha, ma roller erabha, ekuvharisa gaskets, matangi emagetsi, marambi emafuta emafuta endege, uye homwe huru dzemafuta dzinosangana neoiri.Inogona kugadzira mabhandi ekutakurisa zvinhu zvinopisa. |
Material properties yeanowanzo shandiswa synthetic rubber
| Rubber zita | Madimburiko | Hardness range (HA) | Kushanda tembiricha (℃) |
| Nitrile rubber | NBR | 40-95 | -55~135 |
| Hydrogenated nitrile rubber | HNBR | 50-90 | -55~150 |
| Fluororubber | FKM | 50-95 | -40~250 |
| Ethylene propylene rubber | EPDM | 40-90 | -55~150 |
| silicon rubber | VMQ | 30-90 | -100~275 |
| Fluorosilicone rubber | FVMQ | 45-80 | -60~232 |
| Chloroprene rubber | CR | 35-90 | -40~125 |
| Polyacrylate rubber | ACM | 45-80 | -25~175 |
| polyurethane | AU/EU | 65-95 | -80~100 |
| Perfluoroether rubber | FFKM | 75-90 | -25~320 |
Nguva yekutumira: Kubvumbi-07-2024
