01. Intshayelelo: Indlela i-One Delaminated Panel eyakhokelela ngayo kwilahleko enkulu

Kwindawo yokusebenzela yokuvelisa yomenzi wezinto zokwakha omkhulu, iipaneli zesandwich ze-polyurethane ezisandula ukuveliswa ezenziwe ngesinyithi zabekwa kakuhle emva kokuphuma kumgca wokuvelisa oqhubekayo. Ngexesha lokuhlolwa komgangatho rhoqo, ingcali yaphakamisa ipaneli enye ngokungakhathali—kwaye intsimbi yahlukana nombindi wefoam ngokulula njengokuxobula istikha.

I-odolo exabisa amakhulu amawaka eedola yarhoxiswa ngoko nangoko.

Le yayingeyompazamo yenkqubo elula. Yayikukusilela kwenkqubo okubangelwe "ngumbulali ongabonakaliyo."

Njengoko ishishini le-polyurethane litshintsha ukusuka kwii-HCFC-141b blowing agents ukuya kwiinkqubo ezisekelwe kwi-pentane ezinobuhlobo nokusingqongileyo, abavelisi baye bahlangabezana neengxaki ezinjengokuncipha kwamandla okubopha, ukushwabana kwephaneli, kunye nokuqhekeka kwefoam. Iifomyula ezisebenze ngokungenasiphako kwiinkqubo ze-HCFC-141b zihlala zisiba nokusilela okungalindelekanga emva kokutshintshela kwi-pentane.

Kutheni oku kusenzeka? Yintoni unobangela wokungaphumeleli kwe-bonding kwiiphaneli ze-polyurethane eziqhubekayo eziqhumayo ze-pentane?

Eli nqaku libonelela ngohlalutyo olunzulu lwendlela izinto ezahlukeneyo ezisetyenziswa kwi-green material ezichaphazela ngayo ukusebenza kwe-bonding kwiinkqubo ze-polyurethane ezisekelwe kwi-pentane kwaye libonelela ngamaqhinga okuphucula asebenzayo. Ukuba ungumphathi wemveliso, umlawuli wezobugcisa, okanye injineli ye-formulation, esi sikhokelo senzelwe wena ngokukodwa.

Abavelisi abasebenzisa iinkqubo ze-polyurethane ezifakwe i-pentane badla ngokufuna iindlela ezenziwe ngokwezifiso ukulinganisela ukunamathela, ukuhamba kwamanzi, uzinzo olulinganayo, kunye nokusebenza komlilo.inkqubo ye-polyurethanesisiseko sokufezekisa ukubopha okuthembekileyo kwephaneli.

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 02. Ukuchongwa kwengxaki: Yintoni kanye kanye etshintshileyo kwiPentane?

2.1 Indlela Esisiseko Yokubopha

Ukusebenza kokubopha kweephaneli ze-polyurethane eziqhubekayo kuxhomekeke ekubunjweni kokunamathelana kweekhemikhali kunye nokudibanisa ngoomatshini phakathi kwe-foam kunye nezinto ezijongene nazo (amaphepha esinyithi, ii-facings ze-fiberglass, okanye ii-facings zephepha) ngexesha lenkqubo yokwenza i-foam.

Ngokufanelekileyo, umxube ophendulayo kufuneka umanzise kakuhle umphezulu wephaneli ngaphambi kokuba kwenzeke i-gelation. Njengoko ukudibana kuqhubeka, inethiwekhi enamandla yeebhondi zeekhemikhali kunye neendawo zokubambelela ziyakhiwa kwindawo yokuhlangana.

2.2 “Iziphumo Ezingalindelekanga” zePentane

Xa kuthelekiswa ne-HCFC-141b, iinkqubo ezisekelwe kwi-pentane zizisa imingeni emithathu emikhulu:

Umngeni	Inkcazo	Impembelelo kwiBond
Umahluko kwiParamitha yokunyibilika	I-Pentane ayihambelani kakhulu ne-polyether kunye ne-polyester polyols.	Ukuqina kwe-system ekuqaleni kuyanda, kunciphisa ukuhamba kwamanzi kwaye kuthintele ukumanzisa kakuhle komphezulu wephaneli.
Isiphumo Sokupholisa Esiphumayo	I-Pentane ifunxa ubushushu obukhulu ngexesha lokufuma.	Ubushushu bephaneli buyehla, nto leyo enciphisa ukuphiliswa kwezixhobo kwaye oku kukhokelela ekukhuleni okungonelanga komphezulu kunye nokunamathela okubuthathaka.
Utshintsho kwiSakhiwo seSeli yeFoam	Iinkqubo zePentane zihlala zivelisa iiseli ezincinci ezinomlinganiselo ophezulu weeseli ezivaliweyo.	Imiphezulu yefoam iba buthelezi, nto leyo enciphisa ukusebenza kakuhle kokunxibelelana ngoomatshini.

 

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 03. Uhlalutyo Lokwenziwa Kwezinto: Indlela Izinto Ezisixhenxe Eziphambili Ezichaphazela Ngayo Ukusebenza Kokudibanisa Izinto

Ngokusekelwe kwidatha yophando yamva nje evela kubavelisi abaphambili kushishino, ezi zinto zilandelayo zefomyula zinempembelelo enkulu ekusebenzeni kwebhondi.

3.1 I-Polyester kunye ne-Polyether Polyols: Isiseko sokudibanisa

Iipolyester polyols zezona zinto ziphambili ezibangela amandla okubopha ngenxa yamaqela azo e-polar ester, anokwenza unxibelelwano oluqinileyo lwe-hydrogen-bond kunye nomphezulu wesinyithi.

Nangona kunjalo, iintlobo ezahlukeneyo zepolyester zinokuchaphazela kakhulu indlela yokucubungula kunye neempawu zokugqibela zephaneli.

Iipolyols zepolyester ezinokusabela okuphezulu

• · Ukusebenza kakuhle kokubopha
• · Ukungakwazi ukuhamba kakuhle kwamanzi
• · Umngcipheko okhulayo weziphene zomphezulu

Iipolyester polyols ezingasebenzi kakuhle

• · Ukuphucuka kokuhamba kwamanzi
• · Uxinano olunciphileyo lwe-crosslink
• · Amandla aphantsi okubopha

Ingcebiso yokuphucula

Sebenzisa inkqubo yepolyol exutywe yipolyester/polyether. Iipolyol zepolyether zinokuphucula kakhulu ukuhamba kwamanzi, zivumele ifoam ukuba isasazeke kwaye imanzise umphezulu wephaneli ngokufanelekileyo ngaphambi kokuba i-gel ifikelele kwi-gel.

3.2 Amanzi: Ikrele Elinohlangothi Olubini Elingalinganiswanga Kakhulu

Amanzi aphendula nge-isocyanate ukuze avelise i-carbon dioxide kunye ne-polyurea. Kwiinkqubo ze-pentane, umxholo wamanzi uba ngowona ubalulekileyo.

Iingozi Zamanzi Agqithisileyo

• · Iimpendulo ezinamandla ze-exothermic zikhawulezisa ukuphiliswa komphezulu.
• · Ukuqina komphezulu ngaphambi kwexesha kudala isiphumo "sokunyanga okungeyonyani".
• · Amanqanaba okusabela phakathi komphezulu nombindi aya engafani.
• · Uxinzelelo lwangaphakathi luyaqokelelana, nto leyo eyandisa amathuba okungaphumeleli kokubopha.

Iziphumo zoPhando

Ukunciphisa umthamo wamanzi kunokuphucula kakhulu uzinzo lobukhulu bepaneli, amandla okubopha, kunye namandla efoam kwicala lokunyuka.

3.3 IiCatalysts: Abalawuli beWindows Processing

Imigca yemveliso yeephaneli eziqhubekayo isebenza ngesantya esiphezulu kakhulu, ngesiqhelo i-6-12 yeemitha ngomzuzu. Ukukhethwa kweCatalyst kumisela ngokuthe ngqo ibhalansi phakathi kwexesha lokucubungula kunye nokusebenza kokunciphisa.

Umsebenzi weGel Catalyst ogqithisileyo

• · Ukuqina kuyanda ngaphambi kokuba umxube ufikelele kumphezulu wephaneli.
• · Amandla okumanzisa ayancipha.

Umsebenzi ogqithisileyo wokulungisa i-PIR

• · Ukuqhekeka kwegwebu kuyanda.
• · Ukusilela kojongano kudla ngokubonakala njengokusilela kokudibanisa kunokuba kukusilela kokuncamathelisa.

Ukufunyanwa Okubalulekileyo

Ukukhetha ii-catalysts ze-PIR ezithambileyo kunokuphucula ukuhamba kwamanzi kunye nobukhulu be-foam core ngelixa kugcinwa amandla e-foam iyonke. Funda ngakumbi malungaiikhatalyst ze-polyurethaneusetyenziso lwephaneli oluqhubekayo.

3.4 Izinto Ezithintela Ilangatye: Ingozi Efihlakeleyo Yokubumbana

Izinto ezithintela ilangatye ezingamanzi ezifana ne-TCPP kunye ne-TCEP zisetyenziswa kakhulu ukuhlangabezana neemfuno zokusebenza komlilo. Nangona kunjalo, zikwasebenza njengezinto zokupholisa umlilo, zinciphisa amandla okuhlangana kwefoam.

Iziphumo zoPhando

• · Umthwalo ophantsi othintela ilangatye unokuphucula ngokuthe ngqo ukusebenza kokubopha.

Indlela Ecetyiswayo

• · Nciphisa idosi yokuthintela umlilo ngelixa ugcina iimfuno zokuhlelwa komlilo we-B2 (Isalathisi se-Oxygen ≥ 26%).
• · Cinga ngezinto ezithintela umlilo ezisabelayo njengenye indlela.

3.5 Isalathisi se-Isocyanate (Isalathisi se-NCO)

Isalathisi esiphantsi (<1.05)

• · Ukungadibani kakuhle
• · Amandla efoam anciphileyo
• · Ukusebenza okubuthathaka kokubopha

Isalathisi Esiphezulu (1.10–1.15)

• · Ukuqina kwegwebu okwandileyo
• · Uzinzo oluphuculweyo lobukhulu
• · Ukuba igwebu liphezulu kakhulu, linokuqhekeka.

Amava Asebenzayo

Ukunyusa i-NCO index ngokulinganiselayo kunokunceda ukuthintela ukushwabana kwephaneli, ukuba nje iimeko ezifanelekileyo emva kokuphiliswa ziyagcinwa.

3.6 Ii-Surfactants zeSilicone

Ii-surfactants ze-silicone ezisetyenziswa kwiinkqubo ze-pentane kufuneka zibonelele ngolawulo olusebenzayo kwifestile yokuvula iiseli.

• · Izakhiwo zeeseli ezivalekileyo kakhulu zinokubangela ukushwabana.
• · Izakhiwo zeeseli ezivulekileyo kakhulu zinokunciphisa amandla oomatshini.

I-silicone surfactant ekhethwe ngokufanelekileyo inokudala umphezulu we-foam orhabaxa, nto leyo ephucula ukudibana koomatshini nezinto ezijongene nazo.

3.7 Unyango lwangaphambi koMphezulu wePhaneli

Xa ukwenziwa ngcono kwefomyula kufikelela kwimida yayo kwaye iingxaki zokubopha ziqhubeka, unobangela usenokuba semxholweni ojongene nayo.

Izinto Ezingcolisayo Eziqhelekileyo Ezingaphezulu

• · Iioyile zokuqengqeleka
• · Iileya ze-oxide
• · Iintsalela zomphezulu

Ezi zinto zingcolisayo zinokunciphisa kakhulu ukunamathela.

Izisombululo ezicetyiswayo

Isicelo sePrimerUkusetyenziswa kwi-intanethi kwe-isocyanate eguquliweyo okanye ii-primers ezinamathelayo ezinyibilikayo kudala umaleko osebenzayo wokutshintsha phakathi kwe-foam kunye nezinto ezijongene nayo.

Ukuncamathelisa ngoomatshiniUkusebenzisa iirola zokugqobhoza ukwenza iimbobo ezincinci kumphezulu wephaneli kunokunyusa indawo yokuncamathelisa kunye nokuphucula amandla okubopha.

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 04. Isikhokelo Sokulungisa Iingxaki Esisebenzayo: Izinto Eziphambili Zokulungisa

Xa kuvela iingxaki zokubopha, kucetyiswa ulandelelwano olulandelayo lokuphucula:

 

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 05. Isiphelo

Iingxaki zokubopha kwiiphaneli ze-polyurethane eziqhubekayo eziqhumayo ze-pentane ngokusisiseko ziphakathi kwesantya sokuphendula kunye nexesha lokuhamba.

Ukususela kuyilo lwe-polarity lwee-polyols kunye nolawulo lwamanzi oluchanekileyo ukuya ekukhetheni i-catalyst kunye nolawulo lwexesha lokuphendula, yonke inkcukacha yefomyula ichaphazela ukuba iphaneli iya kugcina ukuthembeka kwayo—okanye inciphe kancinci iinyanga emva kokufakwa.

Njengoko imithetho yokusingqongileyo iqhubeka iqina, kuquka nokuhlaziywa kwemithetho ye-F-gas kwihlabathi liphela, ukwamkelwa kweenkqubo zokuvuthela ezixutyiweyo ze-pentane kunye ne-cyclopentane/isopentane kuya kuqhubeka nokukhula.

Ukuziqhelanisa nezi ndlela zokwenziwa kunye nokucubungula namhlanje kuya kunceda abavelisi bafumane ithuba lokukhuphisana kwimarike ekhula ngokukhawuleza yeepaneli zokukhusela ezizinzileyo kwindalo.

Ngaba ujonge inkqubo yePolyurethane enokuthenjwa enePentane-Blown?

I-MOFAN ibonelela ngezisombululo zenkqubo ye-polyurethane ezenzelwe wena kwiiphaneli zesandwich eziqhubekayo, kuquka ii-polyols ezixutyiweyo ezisekelwe kwi-pentane, ii-catalysts, ii-flame retardants, kunye nenkxaso yobugcisa bokwenza.

Funda ngakumbi ngeNdlu yethu yeNkqubo yePolyurethane

Nxibelelana neqela lethu lobugcisa