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Saddex siyaabood oo kaaliyayaasha amin-ka ee saddexaad ay u kordhiyaan xawaaraha dahaarka
MOFAN TMR-2, oo loo yaqaan lambarka 62314-25-4, ayaa ka soo horjeeda kicinta amine-ka saddexaad kaas oo dedejiya dahaarka tuubooyinka iyada oo loo marayo saddex ficil oo waaweyn: bilawga falcelinta degdegga ah, ballaarinta xumbo oo la hagaajiyay, iyo bogsashada degdegga ah. Kaaliyayaashani waxay la falgalaan kooxaha isocyanate, iyagoo kordhinaya falcelintooda waxayna sameeyaan ...Akhriso wax dheeraad ah -
Habka wax soo saarka maqaarka is-maqaarka ee polyurethane
Saamiga Polyol iyo isocyanate: Polyol wuxuu leeyahay qiimo sare oo hydroxyl ah iyo miisaan molecular oo weyn, kaas oo kordhin doona cufnaanta isku xidhka iyo ka caawin doona hagaajinta cufnaanta xumbada. Hagaajinta tusmada isocyanate, taas oo ah, saamiga molar ee isocyanate iyo hydrogen firfircoon ee po...Akhriso wax dheeraad ah -
Daraasad ku saabsan dhejiska polyurethane ee loogu talagalay baakadaha dabacsan iyada oo aan lahayn daaweyn heerkul sare leh
Nooc cusub oo ah dhejis polyurethane ah ayaa la diyaariyey iyadoo la adeegsanayo polyacids-ka molecule-ka yar yar iyo polyols-ka molecule-ka yar yar oo ah agabka aasaasiga ah ee ceeriin si loogu diyaariyo prepolymers. Inta lagu guda jiro habka fidinta silsiladda, polymers-ka isku-dhafan ee la isku-xidhay iyo kuwa la jarjaray ee HDI ayaa lagu soo bandhigay polyuretha...Akhriso wax dheeraad ah -
Naqshadeyn heer sare ah oo ah polyurethane elastomers iyo codsigooda wax soo saarka heerka sare ah
Elastomers-ka Polyurethane waa fasal muhiim ah oo ka mid ah walxaha polymer-ka ee waxqabadka sare leh. Iyagoo leh sifooyinkooda gaarka ah ee jireed iyo kiimikadeed iyo waxqabad dhammaystiran oo heer sare ah, waxay ku jiraan boos muhiim ah warshadaha casriga ah. Agabkan waxaa si weyn loogu isticmaalaa...Akhriso wax dheeraad ah -
Polyurethane-ka aan biyaha ku salaysnayn oo leh iftiin wanaagsan oo loogu talagalay dhammaystirka maqaarka
Alaabada dahaarka polyurethane waxay u nugul yihiin inay huruud noqdaan waqti ka dib sababtoo ah soo-gaadhista iftiinka ultraviolet-ka ama kulaylka, taasoo saameynaysa muuqaalkooda iyo cimrigooda adeegga. Iyadoo lagu soo bandhigayo UV-320 iyo 2-hydroxyethyl thiophosphate silsiladda fidinta polyurethane, wax aan...Akhriso wax dheeraad ah -
Ma walxaha polyurethane ma muujiyaan iska caabin heerkulka sare?
1 Ma walxaha polyurethane-ka ah ayaa u adkaysta heerkulka sare? Guud ahaan, polyurethane-ku ma u adkaysta heerkulka sare, xitaa iyadoo la adeegsanayo nidaamka PPDI-ga caadiga ah, xadka ugu badan ee heerkulkiisu wuxuu noqon karaa oo keliya qiyaastii 150°. Noocyada polyester-ka caadiga ah ama polyether-ka ayaa laga yaabaa inaysan awoodin inay...Akhriso wax dheeraad ah -
Khubarada Caalamiga ah ee Polyurethane ayaa isugu imaanaya Atlanta si ay uga qayb galaan Shirka Farsamada ee Polyurethanes 2024
Atlanta, GA – Laga bilaabo Sebtembar 30 ilaa Oktoobar 2, Hudheelka Omni ee ku yaal Centennial Park wuxuu martigelin doonaa Shirka Farsamada Polyurethanes ee 2024, kaas oo isugu keenaya xirfadlayaal iyo khubaro hormuud ka ah warshadaha polyurethane ee adduunka oo dhan. Waxaa soo qabanqaabiyay Golaha Kimistariga Mareykanka...Akhriso wax dheeraad ah -
Horumarka Cilmi-baarista ee Polyurethanes-ka Aan Isocyanate ahayn
Tan iyo markii la soo bandhigay 1937, agabka polyurethane (PU) wuxuu helay codsiyo ballaaran oo ku baahsan qaybaha kala duwan oo ay ku jiraan gaadiidka, dhismaha, kiimikada batroolka, dharka, injineernimada farsamada iyo korontada, hawada sare, daryeelka caafimaadka, iyo beeraha.Akhriso wax dheeraad ah -
Diyaarinta iyo astaamaha xumbo polyurethane semi-adag oo loogu talagalay gacan-qabashada baabuurta ee waxqabadka sare leh.
Gacanta ku jirta gudaha gaariga waa qayb muhiim ah oo ka mid ah gaariga, kaas oo door ka ciyaara riixista iyo jiidista albaabka iyo dhigista gacanta qofka gaariga. Haddii ay dhacdo xaalad degdeg ah, marka gaariga iyo gaariga ay isku dhacaan, gacan-qabsi jilicsan oo polyurethane ah iyo...Akhriso wax dheeraad ah -
Dhinacyada Farsamada ee Buufinta Goobta Polyurethane ee Xumbo Adag
Maaddada dahaarka adag ee polyurethane (PU) waa polymer leh cutub qaab-dhismeed soo noqnoqda oo ah qaybta carbamate, oo ay samaysay falgalka isocyanate iyo polyol. Sababtoo ah dahaarka kulaylka ee aadka u fiican iyo waxqabadka biyaha celinaya, waxay ka heshaa codsiyo ballaaran oo dibadda ah...Akhriso wax dheeraad ah -
Soo bandhigida wakiilka xumbo ee xumbo adag oo polyurethane ah oo loo isticmaalo goobta dhismaha
Iyadoo ay sii kordhayaan baahiyaha dhismayaasha casriga ah ee loogu talagalay keydinta tamarta iyo ilaalinta deegaanka, waxqabadka dahaarka kulaylka ee agabka dhismaha ayaa sii kordhaya oo muhiim ah. Kuwaas waxaa ka mid ah, xumbo adag oo polyurethane ah waa agab dahaar kuleyl oo aad u fiican,...Akhriso wax dheeraad ah -
Farqiga u dhexeeya Polyurethane ku salaysan biyaha iyo Polyurethane ku salaysan saliidda
Dahaarka biyaha ka ilaaliya polyurethane ee ku salaysan biyaha waa walax biyo celineed oo polymer ah oo leh molecular sare leh oo deegaanka u fiican oo leh dhegdheg wanaagsan iyo biyo celin. Waxay leedahay dhegdheg wanaagsan oo ku salaysan sibidhka sida alaabta sibidhka iyo dhagaxa iyo birta. Badeecada...Akhriso wax dheeraad ah
