Yintoni i-Closed-Cell Polyurethane Foam?
I-polyurethane foam yeseli evaliweyo luhlobo lwezinto zokukhusela ubushushu ezisebenza kakuhle, ezonga amandla kunye nokumelana nokufuma okunamandla, ngoko ke isetyenziswa kakhulu kumashishini ahlukeneyo. Le foam inemingxuma yebhamuza exineneyo egcwele iigesi zokukhusela (ezibizwa ngokuba zii-blowing agents) ezinceda ukugcina ubushushu ngaphakathi kwimingxuma. Ulwakhiwo lweseli evaliweyo luphucula ukusebenza kobushushu kwaye lukhetho oluhle kakhulu kwizicelo zokukhusela ubushushu ezonga amandla.
Enye yezona nzuzo ziphambili ze-closed cell polyurethane foam kukuxinana kwayo okuphezulu, okuyenza ikwazi ukumelana namanzi kakuhle. Oluxinano luyenza ibe ngumqobo osebenzayo wokufuma, obalulekileyo kwiindawo ezimanzi ezifana nee-attics, ii-crawl Spaces, kunye nee-basement. Ngenxa yokuba i-closed-cell foam yenza isitywina esingangeni moya, inciphisa umngcipheko wokungena komswakama, ngaloo ndlela inciphisa ukukhula kwesikhunta, nto leyo ephucula umgangatho womoya wangaphakathi kwaye inegalelo kwindawo yokuhlala enempilo.
Iindawo Zokusetyenziswa KweeCatalysts ZePolyurethane KwiFoam Yeseli Evaliweyo
Ii-catalysts ze-polyurethane zidlala indima ebalulekileyo ekuvelisweni kwee-foams ze-closed-cell ngokulawula ii-chemical reactions ezivelisa iipropati ezikhethekileyo zee-foams. Ii-catalysts ezifana ne-MXC-C15 kunye ne-MXC-37 zinceda ekufezekiseni iimpawu ezithile zokusebenza ezivumela ii-foams ze-closed-cell ukuba zisetyenziswe ekwakheni nasekugqumeni.
I-MXC-C15(3,3′ -iminobis (N, n-dimethylpropylamine), inombolo ye-CAS 6711-48-4, sisincedisi se-amine esingenavumba liphantsi, esingenawo ukukhupha umoya esikwaziyo ukukhetha kancinci kwiimpendulo ze-urea (isocyanate-water). Esi sincedisi sixhasa ukuguguleka okuthambileyo kwiinkqubo ze-polyurethane eziqinileyo, nto leyo eyenza ukuba sibe lukhetho olubanzi kwizicelo ezifuna iipropati zokuguguleka ezizinzileyo neziqhubekekayo. Iipropati zaso ziluncedo ekusetyenzisweni kwiifoam zeseli ezivaliweyo zokugquma uphahla, iinkqubo zodonga kunye nezinye iindawo apho ukuqina kunye nokumelana nokufuma kubalulekile.
I-MXC-37(2-(2-(dimethylamino)ethoxy)ethanol, CAS No. 1704-62-7), eyaziwa ngokuba yi-DMAEE, sisikhuthazi se-amine esiguquguqukayo, esikhupha ukungcola okuncinci esinomsebenzi ophezulu wokufutha. Ngenxa yokusebenza kwayo kwiifomyula ezinomthamo wamanzi aphezulu, i-MXC-37 ifanelekile ngokukodwa ekudaleni amagwebu okutshiza aphantsi, avuthelwa ngamanzi. Esi sikhuthazi sinciphisa ivumba eliqhelekileyo le-amine elifumaneka kumagwebu kwaye siphucula ukuqina kwesakhiwo segwebu, okwenza libe luncedo kwizicelo ezingenavumba liphantsi. Ukusetyenziswa kwayo ngokubanzi kubandakanya amagwebu athambileyo, ii-elastomers, kunye negwebu eliqinileyo lokupakisha, ukunceda ukufikelela kungqinelwano kunye namandla kwiimveliso ezifuna ukwandiswa ngokuchanekileyo kunye nokuzinza.
Iingenelo zeFoam eValiweyo kunye neeCatalysts zePolyurethane
Ifoam ye-polyurethane yeeseli ezivaliweyo inokumelana okuhle nobushushu nokufuma, kwaye ii-catalysts ezifana ne-MXC-C15 kunye ne-MXC-37 zixhasa imveliso yayo esebenzayo kunye nokusebenza kwayo okuzinzileyo. Xa zizonke, ezi zinto zenza ifoam yeeseli ezivaliweyo ibe lukhetho kwiindawo apho kufuneka ukusebenza okuthembekileyo kobushushu kunye nokuqina kwexesha elide.
Ixesha lokuthumela: Novemba-05-2024