Makomputa erabha zvinhu zvinoshandiswa zvakasiyana-siyana izvo zvava kukosha muindasitiri yemazuva ano. Nekusanganisa mapolymer epasi nezvinozadza, mapurasitiki, zvinogadzirisa, nezvimwe zvinowedzera, vagadziri vanogona kugadzira hunhu hwemakanika, hwekupisa, uye hwemakemikari kuti huenderane nezvinodiwa chaizvo. Makomputa erabha akakamurwa zvakanyanya muzvikamu zviviri zvikuru: rabha yechisikigo (NR) uye rabha yekugadzira. Marabha ekugadzira akakamurwazve mumhando dzebasa rakajairika uye dzakasiyana. Kirasi yega yega inoratidza hunhu hwakasiyana hunosarudza kukodzera kwayo kumaindasitiri akasiyana.
1. Rabha Yechisikigo (NR)
Rabha yechisikigo inotorwa kubva ku latex yemuti weHevea brasiliensis, inokosheswa nekuda kwesimba rayo guru rekudhonza, kuramba kubvaruka, uye kusimba kwayo. Iinewo simba rakanaka rekudzivirira kuneta uye kupisa kushoma kana ichishandiswa. Zvisinei, NR haina simba rekudzivirira mafuta, zvinonyungudutsa, ozone, uye mwaranzi yeUV, uye mashandiro ayo anoderera kana tembiricha yakakwira.
Mashandisirwo: Rabha yechisikigo inoshandiswa zvakanyanya mumatayi emota dzinotakura vanhu, marori, uye ndege, kunyanya mumadziro emativi uye matread uko kuchinjika uye kugona kushanda kwakakosha. Mamwe mashandisirwo anosanganisira mabhande ekufambisa, madhibhi ekudzora simba, maspring erabha, manamati, magirovhosi elatex, mabharumu, uye tsoka dzeshangu.
2. Rubha rekugadzira - Mhando dzeRubha dzezvinangwa zvakajairika
Marabha ekugadzira anoshandiswa pakugadzira akagadzirwa kuti atsive kana kuti awedzere rabha yechisikigo mukushandiswa kwakawanda, zvichipa simba riri nani pakukwegura, kukwesha, kana kupisa.
· Rubha reStyrene-Butadiene (SBR): Rabha rekugadzira rakagadzirwa zvakanyanya, SBR inopa simba rakanaka rekudzivirira kukwesha, kugadzikana kwekukwegura, uye kubata kwakanyorova, kunyangwe iine simba shoma rekukwesha uye kusimba kupfuura NR. Inonyanya kushandiswa muindasitiri yematayi (treads), pamwe nemabhande ekufambisa, mapombi, magasket, mataira epasi, uye tsoka dzeshangu.
· Polybutadiene Rabha (BR): Iine resistance yakanyanya yekukwesha, hysteresis shoma (kurasikirwa nesimba kwakaderera), uye kusimba kwakanyanya kunyangwe patembiricha yakaderera, BR inowanzo sanganiswa neNR kana SBR kuti ivandudze resistance yekukwesha. Mashandisirwo ayo anosanganisira matayi ematairi nemadziro emativi, mabhora egorofu, ma conveyor roller covers, uye impact modifiers epurasitiki.
· Butyl Rabber (IIR): Inozivikanwa nekusapinda kwayo mumhepo nemagasi, pamwe chete nehunyanzvi hwayo hwekunyorovesa mvura uye kuramba ozone. IIR inokosha mumachubhu emukati, mavhiri emukati, madundira anoporesa, ma pharmaceutical stoppers, uye zvikamu zve gas mask.
3. Rabha rekugadzira - Mhando dzemhando yepamusoro
Marabha emhando yepamusoro akagadzirwa kuti ashandiswe munzvimbo dzine kupisa kwakanyanya, makemikari anopisa, mafuta, kana mamiriro ekunze asina kunaka. Ane mitengo yakakwira asi anobvumira kushandiswa kwakakosha.
· Nitrile Rubber (NBR): Inodzivirira mafuta, mafuta, uye zvinonyungudutsa zvinobva mupetroleum, pamwe chete nehunyanzvi hwakanaka hwemakanika pakupisa kwakasiyana-siyana (–35°C kusvika +120°C). NBR ndiyo yakajairika yemapombi emafuta, zvisimbiso zvemafuta, maO-rings, magaskets, mahombi ehydraulic, magirovhosi ekubata makemikari, uye maroller ekudhinda.
· Chloroprene Rabha (CR – Neoprene): Elastomer ine mwero inopa simba rekudzivirira mafuta, simba remamiriro ekunze akanaka uye ozone, simba remoto rinoramba richibvira, uye simba remakanika rakagadzikana. CR inoshandiswa zvakanyanya mumabhande emotokari (nguva uye mabhandi enyoka), majaketi etambo, machira emvura, maforoma ekunamatira, mabheringi ebhiriji, uye kupatsanura mamiriro ekunze.
· Ethylene-Propylene Rabber (EPM/EPDM): Inodzivirira kupisa zvakanyanya (kusvika 150°C), ozone, UV, steam, uye polar fluids, asi haienderane nemafuta nemafuta. EPDM inonyanya kushandisa mapombi emota ekutonhodza, zvisimbiso zvemamiriro ekunze, denga remba, insulation yemagetsi, pond liner, uye zvikamu zvebrake system.
· Rabha reSilicone (Q): Rine basa rinobvira pa-60°C kusvika +230°C (kana kupfuura pamagiredhi ehunyanzvi), rabha resilicone rinopa kuchinjika kwakanaka, kudzivirira magetsi, kuenderana nehupenyu, uye kuramba kubuda kwe corona. Rinoshandiswa mumachubhu ekurapa, ma implants, ma nipples emabhodhoro evana, mabaking mat, ma insulators ane voltage yakawanda, zvisimbiso zvemuchadenga, uye ma keypad contacts.
· Fluoroelastomers (FKM, Viton®): Sarudzo yepamusoro yekudzivirira zvakanyanya makemikari nekupisa. FKMs dzinotsungirira kusvika 250°C nguva dzose uye dzinodzivirira mafuta, mafuta, acids, uye solvents. Mashandisirwo anosanganisira zvisimbiso zveinjini dzendege, maO-rings emafuta emotokari, magaskets emakemikari, michina yekugadzira semiconductor, uye zvikamu zvekuboorera mafuta.
4. Thermoplastic Elastomers (TPEs)
Kunyangwe zvisiri marabha e thermoset akajairika, ma TPE anosanganisa kuchinjika kwakaita serabha nekugona kugadzirwa kwakafanana nepurasitiki. Ma TPE anogona kushandiswazve uye haadi kugayiwa. Mhando dzakajairika dzinosanganisira styrenic block copolymers (SBS, SEBS) uye thermoplastic polyurethanes (TPU). Anoshandiswa mukubata zvinyoro-nyoro, muganda remukati memotokari, mukugadzira michina yekurapa, muzvigadziko zveshangu, uye mukudzivirira waya.
Pfupiso yeIndasitiri
· Mota neKutakura: Ndiwo anonyanya kushandisa rabha. Matayi (NR, SBR, BR, IIR), mapombi (NBR, EPDM), zvisimbiso (FKM, NBR), mabhandi (CR, EPDM), uye zvinosungirirwa zvinobatidza (NR) zvese zvinoshandisa rabha kuti zvive nechokwadi chekuti rabha yakachengeteka, inoshanda zvakanaka, uye inogara kwenguva refu.
· Kugadzira Maindasitiri: Mabhandi eConveyor (NR, SBR), maroller (NBR, PU), magasket (akasiyana-siyana), mahydraulic seal (TPU, NBR), uye ma vibration isolation pads (NR) zvinoita kuti mafekitori nemichina ishande.
· Ndege neDziviriro: Marabha anoshanda zvakanyanya akadai seFKM nesilicone anoshandiswa pakuisa mafuta, maO-rings ehydraulic, magumbeze ekupisa, uye zvisimbiso zvemhepo zvinodzivirira kuputika, uko kukundikana kusiri sarudzo.
· Zvekurapa Nezvehutano: Rabha reSilicone nerabha rebutyl ndizvo zvinonyanya kushandiswa pakugadzira masirinji, mavharivha, machubhu, uye tambo dzemidziyo inopfekwa nekuda kwekushanda kwadzo pamwe chete uye kugona kuvhiyiwa.
· Kuvaka uye Zvivakwa: EPDM denga remba, CR window gaskets, NR bridge bearing pads, uye silicone sealants zvinodzivirira mamiriro ekunze, zvinopa nzvimbo yekuwedzera, uye zvinogara kwenguva refu muzvivakwa nemapurojekiti einjiniya.
· Zvinhu Zvinoshandiswa Nevatengi: Zvigadziko zvetsoka (SBR, BR, TPE), zvinhu zvemitambo (mabhora egorofu, zvigunwe zvekunyura - NR/CR), magirovhosi epamba (NR, NBR), uye mabhokisi emidziyo yemagetsi (TPE) zvinoratidza kugona kwerabha muhupenyu hwezuva nezuva.
Mhedziso
Kurongwa kwemakemikari erabha kuita elastomers dzechisikigo, dzechivanhu, dzechivanhu, uye dzethermoplastic kunoratidza huwandu hwakakura hwezvinodiwa pakushanda mumaindasitiri. Kubva kuSBR isingadhuri mumatayi emotokari kusvika kuFKM inodhura mumainjini ejet, rabha yega yega yakagadzirwa zvakanaka inobatsira pakuchengetedza, kushanda zvakanaka, uye hunyanzvi. Sezvo mashandisirwo matsva achibuda mumotokari dzemagetsi, simba rinogona kudzokororwa, uye tekinoroji inopfekwa, kugadzirwa kwemakemikari erabha epamusoro kucharamba kuchiita basa rakakosha musainzi yezvinhu neinjiniya.
Nguva yekutumira: Chivabvu-14-2026
