Polyurethane rubber, elastomer leyi tirhisiwaka hi tindlela to hambana hambana leyi hlanganisaka xivandla exikarhi ka rhaba na plastiki, yi hundzuke ribye ra xisekelo eka ti indasitiri to hambana hambana hikokwalaho ka swivumbeko swa yona swo hlawuleka. Yi tiveka hi matimba ya yona yale henhla, ku olova, naku lwisana na ku onhaka, rhaba ya polyurethane yitirhisiwa ngopfu eka swiyenge swofana na timovha, ku aka na vumaki. Vuswikoti bya yona byo pfumelelana ni switirhisiwa swo hambana-hambana byi endla leswaku yi va nhlawulo lowu rhandzekaka eka vanjhiniyara vo tala ni vaendli va swifaniso. Hi xikombiso, ku tiya ka yona lokukulu ka ku rhurhumela, loku nga ha vaka ku tlula swilo swin’wana hilaha ku phindhiweke ka khume, swi endle leswaku yi nga ha pfuni nchumu eka tindhawu leti nga ni ntshikilelo lowukulu. Ku lavisisa matirhiselo yo anama na mbuyelo wa rhaba ya polyurethane, unga languta eka vutivi bya vuxokoxoko lebyi nyikiweke ehansi ka nhlokomhaka Raba ya Polyurethane.
Swihlawulekisi swa Raba ya Polyurethane
Ku Tiyisela na Ku tiya
Xin’wana xa swilo leswi xiyekaka swa rhaba ya polyurethane i ku tiya ka yona loku hlamarisaka. Yinyika swiyimo swohambana hambana swa ku tiya, kusuka ehansi kuya fika eka 20 Shore A kuya e henhla ka 80 Shore A, leswi endlaka leswaku yifaneleka eka switirhisiwa swohambana hambana. Ku cinca cinca loku eka ku tiya swifikeleriwa hiku tirhisa swivumbeko swohambana hambana, leswi pfumelelaka vaendli kuva va lulamisa switirhisiwa kuya hi swilaveko swokarhi. Xikombiso, swivumbeko swo olova swikahle swinene eka switirhisiwa swa cushioning, kasi tinxaka to tiya titirhisiwa eka ti rollers ta ti indasitiri na ti seals.
Ku Lwisana na Abrasion
Raba ya polyurethane yi humelela swinene eka ku lwisana na ku rhurhumela, yi tlula switirhisiwa swo tala swa ndhavuko. Ku tiya ka yona ka ku onhaka swile henhla minkarhi ya 5 kuya eka 10 kutlula ya rhaba ya ntumbuluko kumbe rhaba yin’wana yo endliwa. Nhundzu leyi yi endla leswaku yiva nhlawulo wa kahle swinene eka switirhisiwa swofana na conveyor belts, gaskets, na mavhilwa, laha ku tshamela ku hlangana na ku onhaka swinga papalatekiki.
Matimba ya le Henhla ya Tensile
Matimba ya tensile ya polyurethane rubber yanga fika eka 600 kgf/cm2, leswinga e henhla swinene kutlula swa ti elastomers tin’wana totala. Matimba lawa yale henhla ya tiyisisa leswaku nchumu lowu wunga tiyisela ndzhwalo wo tika na ntshikelelo handle ko onhaka kumbe ku tshoveka, leswi endlaka leswaku wuva kahle eka switirhisiwa leswi lavaka swa ti indasitiri.
Elasticity na Low Residual Deformation
Polyurethane rubber yikombisa elasticity ya kahle swinene, laha kungana ku leha loku ringanaka kuya fika eka 600%. Hambi kuri ehansi ka elongation yale henhla swonghasi, residual deformation yitsongo, hi ntolovelo yisuka eka 2% kuya eka 4%. Nhundzu leyi yina nkoka swinene eka switirhisiwa leswi lavaka ku olovisiwa naku tshikileriwa hiku phindha-phindha, kufana na ti seals nati diaphragms.
Ku Lwisana na Oyili na Tikhemikhali
Vuyelo byin’wana lebyikulu bya rhaba ya polyurethane i ku tiya ka yona lokukulu eka mafurha ni tikhemikhali. Yitlula nitrile rubber hiku tiya eka mafurha ya minerali naswona yitirha 5 kuya eka 6 times kutlula rhaba ya ntumbuluko. Leswi swi endla leswaku yi va nchumu lowu rhandzekaka ku tirhisiwa etindhawini leti nga ni mafurha, mafurha ni tikhemikhali tin’wana to tika.
Ku tirhisiwa ka Raba ya Polyurethane
Vumaki bya Mimovha
Eka xiyenge xa timovha, rhaba ya polyurethane yi tirhisiwa ngopfu ku endla ti bushings leti yimisiweke, ti seals na ti gaskets. Vuswikoti bya yona byale henhla byo rhwala ndzhwalo xikan’we naku tiya eka ku onhaka swiendla leswaku yiva kahle eka switirhisiwa leswi. Ku engetela kwalano, vuswikoti bya yona byo tiyisela mahiselo yotala swinene byi tiyisisa matirhelo yo tshembheka eka maxelo yo hisa na yo titimela.
Vumaki na Switirhisiwa swa le Matini
Raba ya polyurethane yitirhisiwa ngopfu eka ku aka eka switirhisiwa swofana na vibration dampers, flooring, na coatings. Ku tiya ka yona na ku lwisana na ku rhurhumela na tikhemikhali swi endla leswaku yiva nhlawulo lowu tshembekaka eka tindzhawu to tika to aka. Ku tlula kwalaho, ku olova ka yona ku yi pfumelela ku tswonga switshuketa ni ku rhurhumela hi ndlela leyinene, leswi endlaka leswaku swivumbeko swi hanya nkarhi wo leha.
Switirhisiwa swa Vumaki na swa Vumaki
Eka vumaki, rhaba ya polyurethane yi tirhisiwa eka mabandhi yo fambisa, swirhendzevutani na swiphemu swa muchini. Matimba ya yona yale henhla xikan’we naku tiya ka ku onhaka switiyisisa leswaku swiphemu leswi swikota ku khoma ndzhwalo wo tika xikan’we naku tirha loku yaka emahlweni handle ko cinciwa nkarhi na nkarhi. Leswi a swi hunguti ntsena nkarhi wo yima kambe swi tlhela swi hunguta mali yo hlayisa.
Nhundzu ya Vatirhisi
Raba ya polyurethane yi tlhela yi kumeka eka swilo swo hambana-hambana leswi tirhisiwaka, ku katsa ni swiambalo swa milenge, switirhisiwa swa mintlango ni swilo swa le kaya. Ntumbuluko wa yona wo vevuka, swin’we na ku tiya ka yona na ku cinca-cinca, swi endla leswaku yi va nhlawulo lowu dumeke eka switirhisiwa leswi. Hi xikombiso, yi tirhisiwa eka swirhendzevutana swa swiambalo swa mintlangu leswi tirhaka kahle leswaku yi nyika ku rhunga ni ku seketela.
Mahetelelo
Raba ya polyurethane yi humelela tani hi nchumu lowu tirhisiwaka hi tindlela to hambana hambana na ku tshembheka lowu fikelelaka swilaveko swa tiindasitiri to hambana hambana. Ku hlanganisiwa ka yona ko hlawuleka ka swivumbeko, kukatsa na matimba yale henhla, ku olova, na ku lwisana na ku onhaka na tikhemikhali, swiendla leswaku yiva nhlawulo lowu tsakeriwaka eka switirhisiwa kusuka eka switirhisiwa kusuka eka swa timovha kuya eka switirhisiwa swa vatirhisi. Ku kuma ku twisisa loku dzikeke ka matirhiselo ya yona na mimpfuno ya yona, u nga lavisisa swo tala hi Raba ya Polyurethane.
