Iityhubhu zePolyurethane ziphezulu-zokusebenza kwemibhobho yoshishino eyenziwe ikakhulu ngentlaka yepolyurethane. Ngenxa yeepropathi zabo ezigqwesileyo zoomatshini, ukuxhathisa ukubola kweekhemikhali, kunye nokuguquguquka kokusingqongileyo, zisetyenziswa kakhulu kwiinkalo ezahlukeneyo. Eli nqaku liza kwazisa ngokucwangcisiweyo iimpawu zobugcisa kunye nexabiso elisebenzayo leetyhubhu ze-polyurethane ukusuka kwimiba yezinto eziphathekayo, iinkqubo zokuvelisa, izicelo eziphambili, kunye neendlela zophuhliso.
I. Iimpawu zeMathiriyeli kunye neeNzuzo zokuSebenza
Izinto ezingundoqo zetyhubhu ze-polyurethane yi-polyurethane (PU), i-high-ikhompawundi yemolekyuli eveliswa yi-polymerization reaction ye-polyols kunye ne-isocyanates, ukudibanisa ukuqina kwerabha kunye namandla eplastiki. Iimpawu zayo eziphambili ziquka:
1. Ukuchasana kwe-Abrasion High: Ukuxhatshazwa kwe-abrasion yeetyhubhu ze-polyurethane ngama-3-5 amaxesha e-rubber yendalo, okwenza kube lula kwiimeko zokuthutha ulwelo kunye nokuphazamiseka okuphezulu kunye nefuthe eliphezulu, njengemibhobho ye-hydraulic kwimigodi kunye noomatshini bobunjineli.
2. Ukuxhathisa kwi-Chemical Corrosion Resistance: Ziyakwazi ukuxhathisa kakuhle kwiiasidi ezininzi, iialkali, iityuwa, kunye nezinyibilikisi eziphilayo, kwaye zizinzile ngakumbi kwindawo{1}}ezingamandla oxidizing.
3. Ukuguquguquka kunye nokumelana neMozulu: Igcina ukuguquguquka nakwiqondo lokushisa eliphantsi (ngokuqhelekileyo ukumelana ne-40℃ukuya kwi-80 degree), kwaye ibonisa ukuxhathisa ukuguga kwe-UV xa kuthelekiswa nemibhobho yerabha eqhelekileyo.
4. Ukukhanya kunye namandla aphezulu: Ngobuninzi be-1/8 kuphela yeepayipi zensimbi, inokumelana nokunyanzeliswa kokuqhuma kwe-20{4}}30 MPa, okwenza ukuba ifanelekele izicelo ezinobunzima.
II. Inkqubo yeMveliso kunye noHlelo lweTekhnoloji Imibhobho yePolyurethane iveliswa ikakhulu kusetyenziswa ukubumba i-extrusion, kunye nenkqubo ethile ebandakanya i-prepolymerization yemathiriyeli ekrwada, ukuxuba kunye neplastikhi, ukubumba umngundo, kunye-nokulungiswa kweposi. Ngokusekelwe kumahluko wesakhiwo, zinokwahlulwa zibe ziindidi ezimbini ezilandelayo:
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. Iqhele ukusetyenziswa kwiinkqubo eziphezulu-zoxinzelelo lwehydraulic.
Ukongeza, ezinye{0}}iinjongo zemibhobho yepolyurethane zilungiswa ngeento zokunqanda amadangatye, ii-antistatic agents, kunye nezinye izongezo ukuze zihlangabezane nemigangatho yokhuseleko kumashishini afana nepetrochemicals kunye nemigodi yamalahle.
III. IiNdawo zokuSebenza eziQhelekileyo Ityhubhu yePolyurethane, enezibonelelo zayo zokusebenza ezibanzi, idlala indima ephambili kwezi ndawo zilandelayo:
1. I-Industrial Hydraulic Systems: Isetyenziswa njengemibhobho ye-oyile yoxinzelelo oluphezulu{1} okanye imigca ye-pneumatic koomatshini bobunjineli, izixhobo zesinyithi, kunye nemigca yokuvelisa ezenzekelayo, ithatha indawo yemibhobho yerabha yesintu ukwandisa ubomi benkonzo.
2. Uthutho lolwelo: Isetyenziswa kwimichiza, ukutya, kunye namashishini axuba amayeza ukuthutha ulwelo oludlekayo okanye{1}} olucocekileyo. Ityhubhu yayo yococeko-yenqanaba le-polyurethane idibana nemigangatho ye-FDA kwaye ingasetyenziselwa isiselo nemibhobho yemveliso yobisi.
3. Izithuthi kunye noThutho lukaLoliwe: Isetyenziswe njengemigca yepetroli, imigca yokupholisa, okanye ukudibanisa i-shock absorber; iimpawu zayo ezilula zinceda ukunciphisa ukusetyenziswa kwamandla.
4. Ubunjineli baseLwandle: I-Hydrolysis{1}}i-resistant polyurethane tubing ilungele ukudityaniswa kwezixhobo zangaphantsi kwamanzi kwiinqanawa kunye namaqonga angaphandle konxweme, ukumelana nokudleka kwamanzi olwandle.
IV. Iindlela zoPhuhliso kunye neMingeni Ngokuphuculwa kobugcisa bemizi-mveliso, iityhubhu ye-polyurethane iphuhla isiya ekusebenzeni okuphezulu kunye nokusebenza okuninzi:
• Ukuphuculwa kokusiNgqongileyo: Ukuphuhliswa kwemathiriyeli ekrwada ye-bio{0}esekelwe kwi-polyurethane ukunciphisa ukukhutshwa kwekhabhoni; ukwandisa iinkqubo zokurisayikilisha ukunciphisa ungcoliseko lwenkunkuma.
• Integrated Intelligent: Ukufakela izivamvo ukuze kuzuzwe lokwenyani -loxinzelelo lwexesha kunye nokujongwa kobushushu, kusetyenziswa kwinkalo yokwenziwa ngobukrelekrele.
• Extreme Environment Adaptability: For ultra-high temperature (>I-120℃) okanye i-media oxidizing kakhulu, iteknoloji ye-nanocomposite iphakamisa umda wokunyamezela.
Nangona kunjalo, iipayipi ze-polyurethane nazo zinemida. Umzekelo, ukuba sesichengeni se-UV{1}ixesha elide kunokubangela ukuqina komphezulu, kufuneke izaleko ezikhuselayo; eminye imixube elungisiweyo inokunyusa iindleko, ifuna ulungelelwano phakathi komsebenzi noqoqosho.
Njengesebe elibalulekileyo lemibhobho yemizi-mveliso yanamhlanje, imibhobho ye-polyurethane, enokumelana nokunxiba okugqwesileyo, ukuxhathisa umhlwa, kunye nokuguquguquka, iye yaba lukhetho oluyimfuneko kwiinkalo ezininzi. Kwixesha elizayo, kunye nokuqhubela phambili kwisayensi yezinto kunye neteknoloji yokuvelisa, umda wokusetyenziswa kwemibhobho ye-polyurethane iya kwandiswa ngakumbi, ngelixa ukuphuhliswa okuqhubekayo kozinzo kunye nobukrelekrele kuya kubonelela ngezisombululo ezingcono zokusebenza ngokufanelekileyo kweenkqubo zemizi-mveliso.
