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 pakakwirira 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 hazviratidzi 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 maapplication, kunzwisisa kwekuita kwekushisa pane tekinoroji zvimiro zvechinyorwa kunodiwa pakuita kwakaringana komputa optimization.

Mubepa rino, mhedzisiro yetembiricha pane tekinoroji zvimiro zverabha akazadzwa inoongororwa, ichitarisa pamhando yekuzadza, muyero wayo, uye kupindirana kwekuzadza 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 yepamusoro yesilica inogona kugadziridzwa zvese zvingoitika (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 yekuvandudza zvinhu zvezvinhu. Aya 'mafirita' matsva uye kudyidzana kwawo nepolymer matrix haisati yadzidzwa maererano netembiricha uye frequency inotsamira zvivakwa. Iwo 'mafiller' matsva uye kudyidzana kwawo nepolymer matrix hakuna kudzidzwa maererano netembiricha uye frequency inotsamira zvivakwa.

Zvichienderana nemechini uye dhizaini yemagetsi zvimiro zve vulcanized uye isina kuvhurika HNBR makomisheni, akasiyana mafirita (carbon dema, silica uye ZDA) akaongororwa kuti azadzwe. 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 yekusimbisa uye haina mhedzisiro pakudzikira kwetembiricha mubhainda 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 mune isina kuvhurika rabha makomisheni nekuti ZDA haisati yave polymerized uye inoshanda chete seyakaderera hama molecular 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 yakanga ine yakakura 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, kupindirana kweionic uku hakuna kukanganisa kutsamira kwetembiricha yekutyoka kushushikana. Izvi zvinoratidza kuti mechanically stable ionic interactions between ZDA and the functionalized polymer matrix (HXNBR) chinhu chinodiwa kuti ive yakanakisa mechanical and dynamic mechanical properties of the rubber material with low hysteresis loss under dynamic deformation conditions.