Intshayelelo: Imeko yophuhliso lwetekhnoloji yefoam yokutshiza i-polyurethane
Kwimeko yokugcinwa kwamandla okwakha kwihlabathi liphela kunye neemfuno zokukhusela okusingqongileyo ezingqongqo, i-polyurethane spray foam njengesixhobo sokukhusela ubushushu esisebenzayo, uluhlu lokusetyenziswa kwayo luyanda rhoqo. Okwangoku, kukho iindlela ezimbini eziphambili zobugcisa ezithengiswayo: iinkqubo zendabuko zokufutha amanzi kunye neenkqubo zokufutha ze-HFO(hydrofluoroolefin) ezisakhulayo. Njengomvelisi ochwephesha wee-polyurethane catalysts, siza kuhlalutya ngokupheleleyo iimpawu zobugcisa zeenkqubo ezimbini, umahluko wokusebenza, kunye nendlela yokukhetha i-catalyst efanelekileyo yokuphucula ukusebenza kwenkqubo.
Iinkcukacha zenkqubo yefoam ye-polyurethane spray foam yamanzi
Imigaqo esisiseko kunye neempendulo zeekhemikhali
Inkqubo Yokuvuthuza Amanzi (i-WBA) yenye yezona teknoloji zendabuko nezivuthiweyo zokwenza amagwebu kwishishini le-polyurethane. Umgaqo osisiseko kukusebenzisa amanzi ukuze aphendule nge-isocyanate (-NCO) ukuvelisa i-carbon dioxide (CO₂) njengegesi evuthuzayo:
R-NCO + H₂O → R-NH₂ + CO₂↑
Le mpendulo ngaxeshanye idala isakhiwo se-polyurea esibonelela ngokuqina okuncinci kwi-foam. Iingenelo zenkqubo yokufutha amanzi ziquka:
- Inzuzo yexabiso: Amanzi yeyona nto ifuthayo kakhulu
- Ukhuseleko lokusingqongileyo: Akukho ODP (amandla okuphelelwa yi-ozone), i-GWP ephantsi (amandla okufudumala kwehlabathi)
- Inkqubo evuthiweyo: amashumi eminyaka yembali yesicelo, iiparameter zenkqubo ezigqibeleleyo
Intsimi yesicelo eqhelekileyo
1. Ukuthintela ubushushu besakhiwo: ukuthintela ubushushu beendonga nophahla kwindawo yokutshiza
2. Izinto ezisetyenziswa kwi-cold chain: ubushushu obuphantsi kweelori ezifrijiweyo kunye nendawo yokugcina izinto ezibandayo
3. Iipayipi zemizi-mveliso: ezichasene nokugqwala kunye nokuthintela ukugquma kweepayipi zepetrochemical
Iimpawu zokusebenza
- Uluhlu loxinano: ngesiqhelo yi-30-50kg/m³
- Ukuqhuba kobushushu: 0.022-0.028W/(m·K)
- Izinga lokubanjwa kwe-Obturator: 90-95%
- Uzinzo lobukhulu: ≤1.5% (70℃, 48h)
Uhlalutyo lwenkqubo yefoam ye-polyurethane efuthayo ye-HFO
Isizukulwana esitsha setekhnoloji ye-arhente yokuvuthela ebonakalayo
I-arhente yokuvuthela ye-HFO(hydrofluoroolefin) yiarhente yokuvuthela ebonakalayo yesizukulwana sesine eyenziwe kwiminyaka yakutshanje, emele iimveliso ezifana ne-HFO-1233ZD (E) kunye ne-HFO-1336MZZ (Z). Xa ithelekiswa nee-arhente zokuvuthela ze-HCFCs zemveli kunye ne-HFC, i-HFO ine:
- I-GWP ephantsi kakhulu: idla ngokuba yi-<10, iphantsi kakhulu kunee-agents zokuvuthela zohlobo lwe-HFC
- I-ODP engenamsebenzi: ayonakalisi umaleko we-ozone
- Ubushushu obugqwesileyo: ukuhanjiswa kobushushu besigaba segesi kuphantsi kune-CO₂
Iimpawu zokusabela kweekhemikhali
Njenge-arhente yokuvuthela ngokwasemzimbeni, i-HFO ixhomekeke kakhulu ekwandiseni kwayo umphunga ukuze ivelise ulwakhiwo lwe-foam, kodwa isafuna amanzi ukuze athathe inxaxheba kwinxalenye yempendulo yeekhemikhali ukuze inike amandla ongezelelweyo okuvuthela:
Impendulo ephambili: Ukwandiswa komphunga we-HFO
Impendulo yecala: H₂O + -NCO → CO₂ + polyurea
Iimeko eziphambili zesicelo
1. Ubushushu besakhiwo obuphezulu: Iiprojekthi zesakhiwo eziluhlaza ezineemfuno ezingqongqo zokhuseleko lokusingqongileyo
2. Ukufakwa kombane: ifriji, isifudumezi samanzi kunye nezinye izixhobo zasekhaya zokufakwa kombane
3. Inqwelo-moya: Izicelo ezikhethekileyo ezineemfuno zobunzima obufunekayo kunye nokusebenza okufunekayo
Iimpawu zokusebenza
- Uluhlu loxinano: 28-45kg/m³
- Ukuqhuba kobushushu: 0.018-0.022W/(m·K)
- Izinga lokubanjwa kwe-Obturator: 92-97%
- Uzinzo lobukhulu: ≤1.2% (70℃, 48h)
Indima ephambili yee-catalysts kwiinkqubo zombini
Iimpawu zeIsincedisi seMXC-70
I-MXC-70 sisincedisi se-amine esisebenza kakuhle kakhulu nesingenavumba liphantsi esenzelwe ngokukodwa i-polyurethane spray foam eneempawu ezilandelayo:
- Ivumba eliphantsi: Phucula indawo yokusebenza kwaye uhlangabezane nemigangatho engqongqo yomsebenzi
- Igophe elithambileyo le-foam: libonelela ngejeli elungeleleneyo kunye nokulinganisela kwe-foam ukunciphisa iziphene zomphezulu
- Ukunamathela okuphuculweyo: Kwenzelwe ngokukodwa ukunamathela kwezinto ezahlukeneyo (isinyithi, umthi, ikhonkrithi, njl.njl.)
- Ukusetyenziswa ngokubanzi: Iyahambelana neenkqubo zokufutha amanzi kunye neenkqubo zokufutha i-HFO
Iiparameter zobugcisa:
- Uhlobo lweekhemikhali: i-tertiary amine complex
- Umsebenzi: Umgangatho ophakathi
- Ukusetyenziswa okucetyiswayo: 0.3-1.2php
- Uluhlu lwe-pH olusebenzayo: 7-10
Indlela yokwenza i-catalytic kwinkqubo yokwenza i-water foam
I-MXC-70 ivuselela ezi mpendulo zilandelayo kwiinkqubo zokufutha amanzi:
1. Impembelelo yamanzi kunye ne-isocyanate (impembelelo ephuma kwigwebu)
2. Impembelelo ye-polyols kunye ne-isocyanates (impendulo yejeli)
3. Impendulo yokudibanisa (ukwandisa amandla egwebu)
Ulwakhiwo lwayo olukhethekileyo lweemolekyuli lunokugcina umsebenzi ophakathi kwinqanaba lokuqala lokukhupha igwebu, kwaye lunike amandla aneleyo ejeli kwinqanaba lokugqibela lokukhupha igwebu, ukuze kufunyanwe igwebu elifanayo elinomphezulu othe tyaba.
Indima yokwenza ngcono kwinkqubo ye-HFO
Iinkqubo ze-HFO zihlala zijongene nemingeni elandelayo ngenxa yokwahluka kweempawu zomzimba zee-blowing agents:
- Ukulinganisela kwefoam kunye nejeli kunzima ukulawula
- Ukucotha komphezulu
- Ukubopha kwe-substrate akuzinzanga
I-MXC-70 iphucula ukusebenza kwenkqubo ye-HFO ngokuthi:
1. Lungisa ijika lokunyuka kwe-foam ukuze lihambelane neempawu zokufuma ze-HFO
2. Ukuphucula umgangatho womphezulu emva kokulungiswa
3. Phucula umsebenzi wojongano kwaye uphucule ukufuma kwe-substrate
Iingcebiso zokukhetha inkqubo kunye namatyala esicelo
Indlela yokukhetha inkqubo efanelekileyo yokufutha
1. Cinga ngeemfuno zomthetho wokusingqongileyo
- Imarike engqongqo yaseYurophu naseMelika: inkqubo ye-HFO ephambili
- Amazwe asaphuhlayo: Iinkqubo zokufaka amagwebu emanzini zihlala zikhuphisana
2. Vavanya iimfuno zokusebenza
- Ukuqhuba kobushushu obuphantsi kakhulu: Khetha inkqubo ye-HFO
- Iimfuno zamandla aphezulu: Iinkqubo zokufaka amagwebu ngamanzi zingcono
3. Iingqwalasela zeendleko
- Iprojekthi enohlahlo-lwabiwo mali olulinganiselweyo: Inkqubo yokufutha amanzi
- Iiprojekthi eziphezulu: Iindleko ezongezelelweyo zeenkqubo ze-HFO zingamkelwa
Ityala lesicelo eliphumeleleyo
Ityala 1: Iprojekthi yokwakha eluhlaza (Inkqubo yokufutha amanzi)
- Sebenzisa i-MXC-70 catalyst kwi-0.8php
- Ukufikelela kwi-thermal conductivity 0.025W/(m·K)
- Ukusebenza kakuhle kolwakhiwo kunyuke nge-15%
- Isiqinisekiso se-LEED
Ityala lesi-2: Umgca wokuvelisa iifriji eziphezulu (iNkqubo ye-HFO)
- I-MXC-70 ixutywe ne-catalyst ekhethekileyo
- Ukuqhuba kobushushu kuncitshiswe ukuya kwi-0.019W/(m·K)
- Uxinano lwefoam luncitshiswe nge-12%
- Ukonga iindleko zamandla ngonyaka malunga ne-$80,000
Imeko yophuhliso lwexesha elizayo kunye nembono yetekhnoloji
1. Ukuphucula okuqhubekayo kwenkqubo yokufutha amanzi
- Ukusebenza okuphuculweyo ngeekhatalysts ezintsha
- Nciphisa ukusetyenziswa kwamanzi ukuze unciphise ukuqhekeka
- Uphuhliso lweendlela ezithintela ilangatye kakhulu
2. Inkqubela phambili yetekhnoloji ye-HFO
- Uphuhliso lwee-HFO blowing agents ezingabizi kakhulu
- Ukuphucula ukulungelelaniswa kwenkqubo
- Phucula uzinzo lwenkqubo
3. Uphuhliso lweisikhuthaziubuchwepheshe
- I-catalyst esebenzayo (ukunciphisa i-VOC)
- Inkqubo yokukhangela ekrelekrele (ehambelana neemeko ezahlukeneyo)
- I-catalyst esebenza ngeendlela ezininzi (i-catalytic + i-flame retardant + izinzile)
Isiphelo kunye nengcebiso
Iinkqubo zokufaka igwebu emanzini kunye neenkqubo zokufaka igwebu ze-HFO nganye ineengenelo, kwaye ukhetho luxhomekeke kwiimfuno ezithile zesicelo, iimfuno zokusingqongileyo kunye nokuqwalaselwa kweendleko. Nokuba yeyiphi na inkqubo esetyenziswayo, ukukhetha i-catalyst efanelekileyo kubalulekile ekuqinisekiseni umgangatho wemveliso kunye nokusebenza kakuhle kwemveliso.
I-MXC-70 sisikhuthazi esisebenza kakuhle kakhulu nesiqinisekisiweyo kwimarike esinezi zicelo zilandelayo:
- Ibonelela ngokulinganisela kwe-foam/gel kwiinkqubo zokufutha amanzi
- Sombulula imingeni yokunyanga umphezulu kunye nokubopha iinkqubo ze-HFO
- Iimpawu zevumba eliphantsi ziphucula indawo yokusebenza
- Ukuphucula ukusebenza kakuhle kwemveliso kunye nokuhambelana kwemveliso
Ixesha leposi: Epreli-15-2025