I-polyurethane foam isetyenziswa kakhulu kumashishini ahlukeneyo ngenxa yokuguquguquka kwayo, iimpawu zokukhusela kunye neempawu zesakhiwo. Iimpawu ze-foams zingahluka kakhulu ngokuxhomekeke kwisakhiwo seeseli zazo, ezinokwahlulwa zibe yi-open cell foams okanye i-closed cell foams. Ukukhethwa kwee-catalysts ezisetyenziswa ekuveliseni i-polyurethane foam kudlala indima ebalulekileyo ekumiseleni iimpawu ze-foam, kubandakanya ubuninzi bayo, ukuguquguquka kwayo, kunye nevumba layo. Kweli nqaku, siza kuphonononga umahluko phakathi kwe-open-cell foams kunye ne-closed-cell foams kwaye sihlolisise indlela ii-polyurethane catalysts ezikhethekileyo ezifana ne-MXC-T kunye ne-MXC-37 ezinokusetyenziswa ngayo kwimveliso.
Ukuqonda iiFoam zeSeli eziVulekileyo kunye neeSeli eziValiweyo
Ifoam yeSeli evulekileyo
Ifoam yeseli evulekileyo ibonakaliswa ziiseli zefoam ezidibanayo ukuze zenze ubume obufana nesponji. Le foam ilula kakhulu, iguquguquka ngakumbi, kwaye inemingxuma emininzi, nto leyo ebangela ukuba isandi sifunxwe kakuhle kwaye igqunywe ziimpawu zokuthintela isandi. Ifoam yeseli evulekileyo isetyenziswa kakhulu kwiindawo ezifuna ukugqunywa, njengefenitshala, izihlalo zeemoto, kunye nokuthintela isandi. Iimpawu zayo eziphambili kuxinano oluphantsi, ukuguquguquka okuphezulu, ukusebenza kakuhle kwesandi kunye nokuthintela ubushushu, ukungena kakuhle komoya.
Igwebu leSeli eliValiweyo
Ngokwahlukileyo koko, ulwakhiwo lwefoam evaliweyo luqinile kwaye luvalwe, nto leyo ethintela ukuhamba komoya okanye amanzi. Ifoam ixinene, iqinile kwaye igqunywe ngcono kumswakama. Ifoam evaliweyo ifanelekile kwizicelo ezifuna ukuqina kunye nokumelana namanzi, ezifana nokuthintela izakhiwo, ifoam yokutshiza kwizakhiwo ezisebenzisa amandla aphantsi, kunye needeshibhodi zeemoto. Iimpawu zayo eziphambili kukuxinana okuphezulu, ukuqina okuphezulu, iimpawu ezibalaseleyo zokuthintela (ukuthintela ubushushu, ukumelana nokufuma), ukumelana namanzi kunye nokuqina.
Indima yeeCatalysts zePolyurethane kwiMveliso yeFoam
Ii-catalysts ze-polyurethane zidlala indima ebalulekileyo kwimveliso ye-foam ngokuncedisa ukusabela kweekhemikhali phakathi kwee-polyols (ngesiqhelo ezivela kwizityalo okanye kwimithombo ye-petroleum) kunye nee-isocyanates ukwenza ii-polyurethanes. Ngokuxhomekeke kwiimpawu ze-foam ezifunekayo, ezinje ngobuninzi, ukuguquguquka, kunye nevumba, kusetyenziswa ii-catalysts ezahlukeneyo.
IiCatalysts ezifana neMXC-T kunye neMXC-37 zinezibonelelo ezithile kwimveliso yefoam evulekileyo kunye neye-closed-cell foam. Makhe sijonge ngokusondeleyo iindawo zokusetyenziswa kunye neenzuzo zezi catalysts zimbini.
I-MXC-T (CAS 2212-32-0)kwiMveliso yeFoam
I-MXC-T, ekwaziwa ngokuba yi-TMAEA, sisincedisi se-amine esisebenzayo nesingenazo izikhuseli esibonelela nge-reaction curve egudileyo kwaye siyindlela ebanzi yokuvelisa uluhlu olubanzi lwee-polyurethane foams. I-reaction curve egudileyo ivumela ukwanda kwe-foam okulawulwa ngakumbi, okubalulekileyo ukuqinisekisa ukuhambelana komgangatho we-foam kunye nokusebenza kwayo.
Ukusetyenziswa kwiFoams zeSeli eziVulekileyo kunye nezeSeli eziValiweyo
I-MXC-T isebenza kakuhle kakhulu kwiindawo ezifuna amavumba angaphantsi aseleyo kunye nesenzo esisebenzayo sokutsala. Umsebenzi wayo wokutsala ukhuthaza impendulo phakathi kwe-urea (water-isocyanate), edla ngokuphendula kwi-polymer matrix ngenxa yeqela layo elisebenzayo le-hydroxyl. Yingakho i-MXC-T isetyenziswa rhoqo kwi:
- Ukufakwa kweFoam yokutshiza: I-MXC-T iqinisekisa ukuba i-insulation foam inesakhiwo esifanayo nesinevumba elincinci, nto leyo eyenza ukuba ifaneleke kakhulu kwiindawo zokuhlala nakwiindawo zorhwebo.
- Iideshibhodi zeemoto: Ivumba eliphantsi kunye ne-response curve egudileyo ye-MXC-T yenza ukuba ibe lukhetho olukhethwayo kwii-foam zemoto, ezifana needeshibhodi kunye nezinye izinto zangaphakathi.
I-MXC-37 (CAS 1704-62-7)kwiMveliso yeFoam
I-MXC-37, okanye i-DMAEE, yenye i-catalyst ye-amine engenawo ukukhupha umoya, enevumba eliphantsi elinomsebenzi ophezulu wokufutha. Ifanelekile ngokukodwa kwiifomyula ezifuna umthamo wamanzi ophezulu kwaye idla ngokusetyenziswa ekuveliseni iifoam ze-polyurethane ezifutha amanzi (SPF) ezinoxinano oluphantsi. Le catalyst ifanelekile ekwenzeni iifoam ezinemingxuma emininzi kwaye zinesakhiwo seseli esifanayo, nto leyo eyenza ukuba ibe luncedo kwiindlela ezahlukeneyo apho iimpawu ezinjalo zifunekayo.
Ukusetyenziswa kwiFoams zeSeli eziVulekileyo kunye nezeSeli eziValiweyo
I-MXC-37 yaziwa ngokukwazi kwayo ukunciphisa ivumba eliqhelekileyo le-amine kwi-polyurethane foams, nto leyo eyenza ukuba ibe lukhetho olubanzi kwiindawo ezinobuthathaka ezifana nezi:
- Ifoam yeSpray eNcinci (SPF): I-MXC-37 isetyenziswa kakhulu kwiindawo zokufaka ifoam yokutshiza enoxinano oluphantsi apho amanzi aphezulu, kwaye ivumba elincinci libalulekile. Oku kuquka ukusetyenziswa kwiindawo zokufaka izinto ezikhusela ubushushu, uphahla, kunye neenkqubo zodonga.
- I-Microcellular Foam: I-MXC-37 ingasetyenziselwa ukuvelisa amagwebu e-microcellular, asetyenziswa rhoqo ekupakisheni, kwiindawo zeemoto nakwezinye izinto ezifuna amagwebu alula, aguquguqukayo, kunye namagwebu athambileyo kunye nee-elastomers apho ukuguquguquka nokuqina kuyimfuno ephambili.
- Ukupakishwa kweFoam eQondisiweyo: Kwiinkqubo zokupakisha, ingakumbi apho kufuneka khona iimpawu zokukhanya kunye nobushushu, i-MXC-37 iyasebenza ekulawuleni uxinano lwefoam kunye nokuphucula ulwakhiwo lwefoam.
I-MXC-37 ingasetyenziswa nokuba yi-catalyst ephambili okanye njenge-co-catalyst, ngakumbi xa idityaniswe nezinye ii-catalysts ezifana ne-BDMAEE, ukuphucula umgangatho we-foam kunye nokunciphisa imfuneko yee-catalysts ezininzi.
Isiphelo
Iikhatalyst zePolyurethaneEzifana ne-MXC-T kunye ne-MXC-37 zibalulekile ekuveliseni amagwebu avulekileyo navaliweyo, zinceda abavelisi ukuba bafikelele kwiimpawu zegwebu ezifunekayo ngelixa benciphisa iimveliso ezinobungozi ezifana nevumba kunye nokukhutshwa komoya. Ngokukhetha isikhuthazi esifanelekileyo sohlobo oluthile lwegwebu, abavelisi banokuphucula ukusebenza kunye nozinzo lweemveliso zabo.
Ixesha leposi: Disemba-10-2024