Ukulungiselela kanye nezici ze-polyurethane semi-gridid foam yezindawo ezisebenza ngezimoto eziphakeme.
I-Armrest engaphakathi kwemoto iyingxenye ebalulekile ye-cab, edlala indima yokucindezela nokudonsa umnyango futhi ibeke ingalo yomuntu emotweni. Uma kwenzeka kunesimo esiphuthumayo, lapho imoto eshayisana ne-handrail, i-polyurethane ethambile ye-PP (polypropylene), i-abs (polypropylele), i-absrene - i-hard pastrail, inganikeza ukulimala okuhle kweplastiki kanye ne-buffer, ngaleyo ndlela kunciphisa ukulimala. I-Polyurethane Soft Foam Handrails inganikeza ngezandla ezinhle uzizwe futhi uthole ukuthungwa okuhle komhlaba, ngaleyo ndlela kuthuthukise induduzo nobuhle be-cockpit. Ngakho-ke, ngokuthuthukiswa komkhakha wezimoto kanye nokwenza ngcono izidingo zabantu zezinto zokwakha ezingaphakathi, izinzuzo ze-polyurethane foroft foam kuma-handrails ezithunzini ziya ngokuya zisobala.
Kunezinhlobo ezintathu ze-polyurethane ethambile ngesandla: Ukuqina okuphezulu kwe-Foam, igwebu elizimele ne-semi-rigid. Ingaphandle le-Outer le-HOSTING RESERLIECEETS limbozwe nge-PVC (polyvinyl chloride) isikhumba, kanye nengaphakathi yi-polyurethane ephezulu yokuqina igwebu. Ukuxhaswa kwegwebu kubuthakathaka, amandla aphansi, futhi ukunamathela phakathi kwegwebu nesikhumba kunganele. I-handrail enesikhumba esisezingeni eliphezulu inesendlalelo esiyisisekelo se-foam yesikhumba, izindleko eziphansi, iziqu zokuhlanganisa eziphakeme, futhi isetshenziswa kabanzi ezimotweni zezentengiso, kodwa kunzima ukubheka amandla ebusweni kanye nenduduzo yonke. I-Semi-rigid Armrest ihlanganiswa nesikhumba se-PVC, isikhumba sinikeza ukuthinta okumnandi nokubukeka okuhle, futhi i-semi-rigid foam yangaphakathi inomuzwa omuhle kakhulu, ukumelana nomthelela, ukumuncwa kwamandla nokumelana nokuguga, ngakho-ke kusetshenziswa kabanzi ekusebenziseni indawo yabagibeli.
Kuleli phepha, ifomula eyisisekelo ye-polyurethane semi-groam ye-polyrails ye-handrails yenzelwe, futhi ukuthuthukiswa kwawo kufundwa ngalesi sisekelo.
Isigaba Sokuhlola
Izinto eziphambili ezingavuthiwe
I-Polytheate Pollol A (I-Hydroxyl value 30 ~ 40 mg / g), i-polymer polyol b (i-hydroxyl value 25 ~ 30 mg / g): I-Wanhua Chemical Group Co, Ltd. I-Modified MDI [DIPHENLMETANE Diisocyanate, W (NCO) ingu-25% ~ 30%], i-composite catalyst, i-antioxidant a: I-Antioxidant A: I-Wanhua Chemical (Maitou, njll.; I-Wetting Dispperant (Agent 1), i-Wetting Dispperant (Agent 2): Byke Chemical. Izinto zokusetshenziswa ezingenhla zibanga lezimboni. Isikhumba se-PvC Sinting Isikhumba: Changshu Ruihua.
Imishini emikhulu nezinsimbi
I-SDF-400 Thayipha i-High-Speed Mixer, i-Ar3202CN Uhlobo lwebhalansi kagesi, i-aluminium mold (10cm × 10cm × 10cm, 10cm, 10cm y-Obercm Oven, 501-1065 TYPE EVERERIC MANDER MICE MICE MACH, 501A TYPE SUPER MANJE WERMOSTAT.
Ukulungiselela ifomula eyisisekelo nesampula
Ukwakhiwa okuyisisekelo kwe-semi-rigid polyurethane foam kukhonjiswa etafuleni 1.
Ukulungiswa kwesampula yokuhlola izakhiwo zemishini: Inhlanganisela ye-polyther (okubonakalayo) yalungiswa ngokuya ngefomula yokuqamba, ixutshwe ne-mold eguquguqukayo (3000r / min) ye-foam, yavuselela isibumba esisheshayo se-Foam, yavuselela isibumba esithile se-polyurethane Foam ebunjiwe.
Ukulungiselela isampula yokuhlolwa kokusebenza kweBonding: Isendlalelo sesikhumba se-PVC sibekwe phansi ngokufa kwesikhunta, futhi ama-MDI ahlanganisiwe we-polythelekile futhi avalwe, futhi i-polyurethane Foam ngesikhumba ibunjiwe ngesikhathi esithile.
Ukuhlolwa kokusebenza
Izakhiwo zemishini: 40% CLD (Ubulukhuni obucindezelayo) ngokuya ngovivinyo olujwayelekile lwe-ISO-3386; Amandla ashukumisayo kanye nokubumbana ekhefu kuhlolwa ngokuya nge-ISO-1798 standard; Amandla ezinyathelani ahlolwa ngokuya nge-ISO-8067 Standard. Ukusebenza Ngezibopho: Kusetshenziselwa umshini we-elekthronikhi we-elekthronikhi ukupela isikhumba negwebu 180 ° ngokwezinga le-OEM.
Ukusebenza kokuguga: Hlola ukulahleka kwezakhiwo zemishini kanye nezakhiwo ezibophayo ngemuva kwamahora angama-24 wokuguga ku-120 ℃ ngokuya ngokushisa okujwayelekile kwe-OEM.
Imiphumela nengxoxo
Impahla yemishini
Ngokushintsha isilinganiso se-polytheare polylol a ne-polymer polyol b kwifomula eyisisekelo, umtholo wemithambo ye-polyneatic yempahla emishini yezakhiwo zemishini ye-polyurethane Foam yahlolwa, njengoba kukhonjisiwe kuThebula 2.
Kungabonakala emiphumeleni etafuleni 2 ukuthi isilinganiso se-polytheas pollol a to polymer polyol b sinomthelela omkhulu ezingxenyeni zemishini ze-polyurethane Foam. Lapho isilinganiso se-polytheas pollol a to polymer polyol b sakhuphuka, ukugcwala lapho kwephuka khona kuyanda, ubulukhuni obucindezelayo buyancipha ngezinga elithile, futhi amandla ashubile kanye namandla okuxakanisa nokudabula amandla ashintsha okuncane. Uchungechunge lwama-molecular lwe-polyurethane ikakhulukazi luqukethe ingxenye ethambile nengxenye enzima, ingxenye ethambile evela ku-polyol nengxenye enzima kusuka ku-carbamate Bond. Ngakolunye uhlangothi, isisindo se-molecular esilinganiselwe kanye nenani le-hydroxyl lama-polyols amabili lihlukile, ngakolunye uhlangothi, i-polymer polyol b iyi-polyther pollol eguqulwe ngenxa ye-acrlonitritrile ne-stymer, kanye ne-polymer polyol B iqukethe izinto ezincane zamangqamuzana, ezandisa ubucwebe obuncane be-molecular, obukhulisa ubuhlakani be igwebu. Lapho ama-polytheare pollol a izingxenye ezingama-80 ne-polymer polyol b yizingxenye eziyi-10, izakhiwo eziphelele zemishini zegwebu zingcono.
Impahla ebophayo
Njengomkhiqizo onama-afression aphezulu we-Press, i-handrail izonciphisa kakhulu induduzo yezingxenye uma igwebu ne-isikhumba se-polyurethane Foam nesikhumba kuyadingeka. Ngokwesisekelo socwaningo olungenhla, kwengezwa abantu abahlukanisene namanzi ahlukahlukene ukuhlola izakhiwo zokunamathela kwegwebu nesikhumba. Imiphumela ikhonjiswa kuThebula 3.
Kungabonakala kusuka etafuleni 3 Ngemuva kokusetshenziswa kwezengezo 1 no-3, amandla okuhlunga wesampula angenalutho anokukhuphuka okuthile, futhi amandla okuxineka kwesampula elingu-17 acishe abe ngu-17% aphezulu wesampula elingama-3 acishe abe ngu-25% aphezulu kunesampula elingenalutho. Umehluko phakathi kwezengezo 1 nezengezo ezi-3 zibangelwa ikakhulukazi umehluko ekulweni kwezinto ezihlanganisiwe ebusweni. Ngokuvamile, ukuhlola ukukhuphuka koketshezi ku-solid, i-angle yokuxhumana yipharamitha ebalulekile yokukala ukukhula komhlaba. Ngakho-ke, i-angle yokuxhumana phakathi kwezinto ezihlanganisiwe kanye nesikhumba ngemuva kokungezwa kwalezi zinto ezinamanzi ezingenhla kwahlolwa, futhi imiphumela yaboniswa kuMfanekiso 1.
Kungabonakala kusuka kuMdwebo 1 ukuthi i-angle yokuxhumana yesampula engenalutho yiyona enkulu kunazo zonke, okuyi-27 °, kanye ne-angle yokuxhumana ye-ejenti elisizayo 3 yincane kakhulu, okungu-12 ° kuphela. Lokhu kukhombisa ukuthi ukusetshenziswa kwesengezo 3 kungathuthukisa ukungasebenzi kwezinto ezihlanganisiwe kanye nesikhumba ngezinga elikhulu, futhi kulula ukusakaza ebusweni besikhumba, ngakho-ke ukusetshenziswa kwesengezo 3 kunobutho obukhulu kunabo bonke.
Impahla yokuguga
Imikhiqizo yezandla icindezelwe emotweni, imvamisa yokuvezwa kwelanga kuphezulu, kanti ukusebenza kokuguga kungenye indlela ebalulekile yokusebenza kwe-polyurethane ye-polyurethane. Ngakho-ke, ukusebenza kwefomula eyisisekelo kwahlolwa futhi kwenziwa ucwaningo lwentuthuko, futhi imiphumela yaboniswa kuThebula 4.
Ngokuqhathanisa imininingwane etafuleni 4, kungatholakala ukuthi izakhiwo zemishini kanye nezindawo ezibophayo zefomula eyisisekelo zincipha kakhulu ngemuva kokuguga kwefomula elingu-120 Ukulahleka kokusebenza kokuguga kwe-24h kungama-23% ~ 26%. Kukhonjiswa ukuthi impahla yokuguga kokushisa kwefomula eyisisekelo ayilungile, futhi impahla yokuguga kokushisa ifomula yoqobo ingathuthukiswa ngokungeza isigaba se-antioxidant a kwifomula. Ngaphansi kwezimo ezifanayo zokuhlola ngemuva kokufakwa kwe-antioxidant a, ukulahleka kwezindawo ezahlukahlukene ngemuva kwe-12h kwakungu-7% ~ 8%, kanye nokulahlekelwa yizakhiwo ezahlukahlukene ngemuva kwe-24h ~ 16%. Ukwehla kwezakhiwo zemishini kungenxa yochungechunge lokuphendula kwe-chain okubangelwa ukuqhekeka kwebhondi yamakhemikhali kanye nama-radicals wamahhala asebenzayo ngesikhathi senqubo yokuguga okusebenzayo, okuholela ekushintsheni kwesisekelo ekwakhiweni noma kwezakhiwo zento yangempela. Ngakolunye uhlangothi, ukwehla kokusebenza kwe-bonding kungenxa yokwehla kwezindawo zemishini ye-foam uqobo, ngakolunye uhlangothi, ngoba isikhumba se-PVC sinenombolo enkulu yokuguga kwepulasitiki, futhi ipulasitiki isuka phezulu ngesikhathi sokuguga kwe-anrmal asebekhulile. Ukungezwa kwama-antioxidants kungathuthukisa izakhiwo zayo zokuguga okushisayo, ikakhulukazi ngoba ama-antioxidants angasusa ama-radicals asanda kukhiqizwa, ukubambezeleka noma avimbele inqubo ye-oxidation ye-polymer, ukuze alondoloze izakhiwo zokuqala ze-polymer.
Ukusebenza okuphelele
Ngokusekelwe kwimiphumela engenhla, ifomula efanelekile yenzelwe futhi kwahlolwa izakhiwo ezahlukahlukene. Ukusebenza kwefomula kuqhathaniswa ne kwe-General Polyurethane ephezulu ye-Foam. Imiphumela ikhonjiswa kuThebula 5.
Njengoba kungabonakala kusuka kuThebula 5, ukusebenza kwefomula ephezulu ye-polyurethane Foam formula enezindlela ezithile zezinzuzo ezingezona amafomula ayisisekelo nejwayelekile, futhi kuyasebenza kakhulu, futhi kufanelekile ukusetshenziswa kwezimali eziphezulu zokusebenza.
Ukugcina
Ukulungisa inani le-polythelekile kanye nokukhetha ukuhlakazwa okumanzi okuqeqeshiwe kanye ne-antioxidant kunganikeza i-polyurethane ye-polyurethane foom kahle yemishini, izakhiwo zokuguga ezinhle kakhulu nokunye. Ngokusekelwe ekusebenzeni okuhle kwe-foam, lo mkhiqizo we-polyurethane onamandla we-polyurethane oqinile ungafakwa ezintweni zezimoto ezifana nezinhlaka zezandla namatafula asetshenziswayo.
Isikhathi Seposi: Jul-25-2024