Kukwidziridzwa kweHNBR rabha komisheni kune yakakwirira-tembiricha ine simba maapplication

Hydrogenated nitrile rubber (HNBR) inonyanya kushandiswa mumashandisirwo anoda yakakwirira uye yakaderera tembiricha inoshanduka uye yakanaka kuramba kuchembera, mushure mekuzvimba mumafuta uye mvura Mushure mekuputika mumafuta uye mvura, HNBR inonyanya kushandiswa mumashandisirwo anoda yakakwirira dynamic properties pane yakakwirira uye yakaderera tembiricha uye yakanaka kuramba kuchembera. Mashandisirwo akajairika anoda zvivakwa izvi mabhandi enguva, mahosi ekumanikidza uye mapepa emapepa. Zvigadzirwa zverabha zvinoshandiswa zvinoiswa pasi pemamiriro ekuchinja zvakanyanya uye anowanzo kubatwa nekukatyamadzwa pamusoro peakasiyana tembiricha uye ma frequency. Mayedzo akajairwa anoshandiswa kuratidza masimba anochinja emidziyo anowanzo kuitiswa pakamuri tembiricha.

Kunyange bvunzo idzi dzichigona kuratidza zvinhu zvisina kuzadzwa zvakanaka, kuyerwa patembiricha yakadzikama hakuratidzi mhedzisiro yetembiricha pane yekuzadza-monomer kusangana. filler uye filler-polymer kupindirana uye mhedzisiro yavo pazvinhu zvenyama pane yakanyanya tembiricha. Kune mapolymers akagadzirirwa kunyanya kupisa tembiricha yekushandisa, kunzwisisa kwemhedzisiro yetembiricha pane tekinoroji zvimiro zvezvinhu zvinodikanwa pakuita kwakaringana optimization.

Mubepa rino, mhedzisiro yetembiricha pane tekinoroji zvimiro zvemarabha akazadzwa inoongororwa, ichitarisa pamhando yekuzadza, muyero wayo, uye kupindirana kweiyo filler neHNBR uye hydrogenated carboxylated nitrile butadiene rubber (HXNBR) polymers.

Nechinangwa ichi, pepa iri rinofananidza kusimbisa (N330) uye kusasimbisa (N990) kabhoni dema ne silica (VulcasilN). Iyo pamusoro pesilica inogona kugadziridzwa ese ari maviri passive (filler surface hydrophobic) uye nekushingaira (filler surface hydrophobic uye yakasungirirwa kune polymer). Huwandu huri kuwedzera hwemakomponi anoshandisawo monomeric mafirita, senge zinc diacrylate (ZAD), inogona kuve polymerized in situ panguva yevulcanization kuvandudza zvinhu zvenyama. Aya 'mafirita' matsva uye kudyidzana kwawo nepolymer matrix haisati yadzidzwa maererano netembiricha uye frequency inotsamira zvivakwa. Iwo 'mafirita' matsva uye kudyidzana kwawo nepolymer matrix hakuna kudzidzwa maererano netembiricha uye frequency inotsamira zvivakwa.

Zvichienderana nemechini uye dhizaini zvimiro zveyakasvibiswa uye isina kuvhurika HNBR makomisheni, akasiyana mafirita (carbon dema, silica uye ZDA) akaongororwa kuzadza. uye ZDA) yakazadza yakajairwa HNBR neHXNBR marabha akaongororwa maererano nekutsamira kwetembiricha yezvivakwa zvekusimbisa.

Kudzikira kwemodulus nekuwedzera tembiricha kune ese asina kuvhurika rubha (kunze kweiyo silica-yakazadzwa system) mhedzisiro yekutsamira kwetembiricha yeviscosity yepolymer matrix. Rudzi uye huwandu hwekuzadza mubhainda inongotarisa dhigirii rekusimbisa uye haina mhedzisiro pakudzikira kwetembiricha mubinder modulus.

Kune anonamira-akazadzwa nesilika, kubatana kwe silica particles kunotemesa tembiricha-inotsamira maitiro. Kana iyo silica pamusoro inobatwa ne silica alkane kurapwa kuti iwane hydrophobicity, iyo coalescence ye silica particles inodzivirirwa. Pane yakakura deformation amplitudes, iyo kusimbiswa kwese kabhoni dema uye silica-yakazadzwa makomisheni inogona kurondedzerwa se hydrodynamic kusimbisa chete.

Kana ZDA ichishandiswa sekuzadza, hapana inosimbisa mhedzisiro inoonekwa mumakomisheni erabha asina kuvhurika nekuti ZDA haisati yave polymerized uye inoshanda senge yakaderera mamorekuru mass plasticizer. Iyo ZDA-ine makomisheni yaive yakaderera viscosities pamhando dzese, zvichiratidza zvakanaka zvekugadzirisa zvinhu.

Kufananidzwa kweiyo dynamic mechanical properties uye stress-on-strain properties ye vulcanized rubber yakaratidza kuti ZDA-yakazadzwa HXNBR rubber compound yaiva nepamusoro-soro inopindirana Simba uye yepamusoro-soro yekupedzisira mechanical properties (kushungurudzika uye elongation panguva yekuzorora) yakaderera nekuwedzera kwekushisa kune vose vanosunga. Kudyidzana kwakasimba pakati penzvimbo yekuzadza uye iyo polymer matrix inosimudzira mhedzisiro yekushisa pane inosimbisa zvivakwa. Kunyangwe kudyidzana kweionic pakati peZDA neHXNBR carboxyl mapoka kwakawedzera kushushikana kwekutyoka, uku kupindirana kweionic kwaisave nemhedzisiro pakutsamira kwetembiricha yekutyoka kushushikana. Izvi zvinoratidza kuti mechanically stable ionic interactions between ZDA and the functionalized polymer matrix (HXNBR) chinhu chinodiwa kuti ive yakanakisa mechanical uye dynamic mechanical properties yerubber material ine yakaderera hysteresis kurasikirwa pasi pe dynamic deformation mamiriro.