Ishishini leepaneli zesandwich lixhomekeke kwizixhobo zokugcwalisa ezisebenza kakuhle ezibonelela ngobushushu, ukumelana nomlilo kunye nozinzo lwesakhiwo.I-MXC-5, MXC-8, MXC-41) zidlala indima ebalulekileyo ekuvelisweni kwezi zinto, zinceda ekufezekiseni iimpembelelo zamakhemikhali ezikhawulezayo nezisebenzayo kwinkqubo yokwenziwa kwefoam. Izinto ezisetyenziswa kakhulu kwi-sandwich core zizinto ezingaphiliyo ezifana ne-polyurethane (PUR), i-polyisocyanurate (PIR), i-polystyrene, i-phenolic foam (PF) kunye ne-rock wool. Eli phepha libonelela ngesishwankathelo sezi zinto kunye nendlela ii-polyurethane catalysts ezinokwenza lula ngayo uphuhliso lwazo kunye nokusetyenziswa kwazo kwiipaneli zesandwich.
Izinto zokuzalisa eziqhelekileyo kwiiphaneli zesandwich
Izinto ezisetyenziswa kwii-sandwich panel cores zinokwahlulwa zibe ziindidi ezimbini eziphambili: izinto ezisekelwe kwi-foam kunye nezinto ze-inorganic fiber. Uhlobo ngalunye lwezinto luneempawu ezizodwa ezenza ukuba zilungele ukusetyenziswa okuthile, kuxhomekeke kwiimfuno zobushushu, ulwakhiwo, kunye nokumelana nomlilo zephaneli.
Izixhobo zeFoam
1. I-Polyurethane (PUR) kunye ne-Polyisocyanurate (PIR):
I-Polyurethane (PUR) kunye ne-polyisocyanurate (PIR) zezona zinto zimbini zisetyenziswa kakhulu ekuveliseni iiphaneli zesandwich. Ezi zinto ziveliswa yi-reaction ye-polyols kunye ne-isocyanates ezikhuthazwa zizinto ezifana ne-MXC-5,I-MXC-8, kunye ne-MXC-41. Umsebenzi we-catalytic uqinisekisa ukuba i-foam iyakhula, iyaphilisa kwaye ibopha ngokufanelekileyo kwisakhiwo se-sandwich plate.
- Ukunamathela kunye noBume obuQinisekileyo:Esinye sezizathu eziphambili zokusebenzisa i-PUR/PIR kwiipaneli zesandwich ziimpawu zayo ezintle zokubopha. Ngexesha lenkqubo yokufaka igwebu, i-PUR kunye ne-PIR zinamathela kakuhle kwizinto eziphezulu ezifana nezikhumba zentsimbi okanye ze-aluminium, ngaloo ndlela ziphucula ukuqina kwesakhiwo sepaneli. Olu phawu lwenza ezi foam zibe lukhetho olubanzi kwiintambo zokugquma, njengoko ibhondi eqinileyo ibalulekile ekuzinzeni.
- Ukuphucula Ukumelana Nomlilo:Indlela yokwenza iikhemikhali ze-PUR/PIR foam iye yaphucuka ngokuhamba kweminyaka, njengoko kunjalo nangokuxhathisa kwayo umlilo, uphawu olubalulekileyo kwizicelo zezakhiwo apho kufuneka kuhlangatyezwane nemigaqo engqongqo yokhuseleko lomlilo. I-PIR, ngakumbi, inokumelana nomlilo okungcono kune-PUR, nto leyo eyenza ukuba ibe lukhetho olubanzi kwizicelo ezinomngcipheko ophezulu.
2. I-Polystyrene (EPS/XPS):
I-Polystyrene, kuquka i-expanded polystyrene (EPS) kunye ne-extruded polystyrene (XPS), yenye into esetyenziswa kwi-sandwich panels. Nangona ingasetyenziswa njenge-PUR/PIR, i-polystyrene ineempawu ezintle zokuthintela ubushushu. Nangona kunjalo, iimpawu zayo zokuncamathelisa azinamandla njenge-PUR/PIR, ngoko ke isenokungafaneleki kwizicelo ezifuna amandla aphezulu okwakha.
- Ubushushu obuphezulu:I-Polystyrene ibonelela ngobushushu obuhle kakhulu ngexabiso eliphantsi xa kuthelekiswa nezinye izinto, nto leyo eyenza ukuba ibe lukhetho oludumileyo kwiiprojekthi ezixabisa kakhulu. Nangona kunjalo, ayinayo ukumelana nomlilo kunye namandla okubopha anikezelwa yi-PUR kunye ne-PIR.
3. I-Phenolic Foam (PF):
I-foam ye-phenolic intsha xa ithelekiswa nezinye izinto ze-foam kwaye ayisetyenziswa rhoqo kwimveliso yeepaneli zesandwich. Nangona kunjalo, inika inzuzo enye ebalulekileyo: ukumelana nomlilo okuphezulu. I-foam ye-phenolic inokumelana nomlilo okungcono phakathi kwezinto ze-foam, okwenza ifaneleke ukusetyenziswa apho ukhuseleko lomlilo luphambili.
- Ukumelana nomlilo:Ulwakhiwo olukhethekileyo lwekhemikhali ye-phenolic foam luyivumela ukuba imelane namaqondo obushushu aphezulu ngaphandle kokuphazamisa ukuqina kwesakhiwo. Nangona isebenza kakuhle ekutshiseni, i-phenolic foam ayisetyenziswa kakhulu ngenxa yeendleko zayo eziphezulu kunye nokufumaneka kwayo okuncinci.
Izixhobo zeFayibha ezingaphiliyo
1. Uboya beRock:
I-Rockwool, into engeyoyamvelo enefayibha, isetyenziswa kwii-sandwich panel cores ngenxa yokumelana kwayo nomlilo kunye neempawu zayo zokuthintela isandi. Ngokungafaniyo nezinto ze-foam, i-rockwool ayitshi, nto leyo eyenza ukuba ibe lolona khetho lufanelekileyo kwiizicelo ezivavanywa ngumlilo.
- Ubushushu kunye noKhuseleko lweSandi:I-Rockwool inika ubushushu obusebenzayo, nangona ingekho phezulu njengezinto ezithile ze-foam. Ukongeza, ulwakhiwo lwayo olune-fiber lunceda ekunciphiseni isandi, nto leyo eyenza ukuba ifaneleke ukusetyenziswa okufuna ukunciphisa ingxolo.
- Ukumelana nomlilo:Eyona nzuzo iphambili yeRockwool kukuba ayitshi. Iyakwazi ukumelana namaqondo obushushu aphezulu kakhulu, nto leyo eyenza ukuba ibe lolona khetho lukhethwayo kwizakhiwo ezifuna ukhuseleko oluphuculweyo lomlilo.
Indima yeePolyurethane Catalysts kwiMveliso yeeSandwich Panel
Ii-catalysts ze-polyurethane ezifana ne-MXC-5, i-MXC-8, kunye ne-MXC-41 zibalulekile kwimveliso efanelekileyo yezinto ze-foam ezisetyenziswa kwiipaneli zesandwich. Ezi catalysts zikhawulezisa ii-chemical reactions phakathi kwe-polyols kunye ne-isocyanates, ziqinisekisa ukuba i-foam iyanda ngokulinganayo kwaye iphiliswa ngokufanelekileyo. Ngaphandle kwee-catalysts, i-reaction iya kuba yicotha kwaye ingaphelelanga, nto leyo ekhokelela kwi-foam ekumgangatho ophantsi eneempawu zokubophelela kunye nokugquma ezinganeleyo.
- Ulawulo lokuphendula:IiCatalysts zilawula izinga lokwakheka kwefoam, ziqinisekisa ukuba ifoam iyakhula ukuze izalise wonke umbindi wepaneli yesandwich. Zikwachaphazela ibhalansi phakathi kokuvuthela kunye neempendulo ze-gelation, ziphucula uxinano lwefoam kunye nolwakhiwo lweseli.
- Izinto eziqwalaselwayo kwiNdalo:Ii-catalysts ezininzi ze-polyurethane zanamhlanje zenzelwe ukunciphisa ukukhutshwa kwe-volatile organic compound (VOC) kunye nokuphucula ukhuseleko lokusingqongileyo. Ii-catalysts ezingenavumba liphantsi, ezingenayo i-emission, ezifana ne-MXC-41, zinegalelo ekuvelisweni kweepaneli zesandwich ezinobuhlobo nokusingqongileyo.
Isiphelo
Kwimveliso yeepaneli zesandwich, ukukhetha izinto zokuzalisa ezifanelekileyo kubalulekile ekuhlangabezaneni neemfuno zobushushu, zesakhiwo, nezokhuseleko lomlilo. Izinto ezisekelwe kwifoam ezifana ne-PUR, i-PIR, i-polystyrene, kunye ne-phenolic foam, kunye nezinto ezingaphiliyo ezifana ne-rockwool, nganye ineenzuzo ezikhethekileyo. Ii-catalysts ze-polyurethane ezifana ne-MXC-5, i-MXC-8, kunye ne-MXC-41 zidlala indima ebalulekileyo ekuqinisekiseni ukuveliswa ngokufanelekileyo kwezinto zefoam ezisebenza kakuhle. Ezi catalysts zikhawulezisa ii-chemical reactions ezidala ifoam, zibonelela ngokudibanisa okuphuculweyo, ukufudumala kobushushu, kunye nokumelana nomlilo okubalulekileyo kwizicelo zokwakha zanamhlanje.
Ixesha leposi: Oktobha-24-2024