Ukwaziswa kwe-arhente ye-wading ye-Polyurrethane rigid i-foam esetyenziswa kwicandelo lokwakha
Ngokwanda kokukhula kwezakhiwo zanamhlanje zokugcinwa kwamandla kunye nokukhuselwa kwendalo, intsebenziso yokufakelwa kwe-irmal yentsebenzo yezinto zokwakha izakha ngakumbi kwaye ibaluleke ngakumbi. Phakathi kwazo, i-Polyurethane i-figid igwebu yindawo efanelekileyo yokufakelwa kwempahla, eneempawu ezilungileyo zoomatshini, ukuqhutywa komhlaba okuphantsi, ukwenziwa okuphantsi kokukhona kunye nezinye izibonelelo, ngoko ke kusetyenziswa ngokubanzi kwicandelo lokufakwa kwezokwakha.
Iarhente ye-wading yenye yezona zinto zibalulekileyo kwimveliso ye-polyurrethane inzima. Ngokwendlela yayo yesenzo, inokwahlulwa yangamacandelo amabini: iarhente yokwakhiwa kwamachiza kunye nearhente yokwakhiwa komzimba.
Ukwahlulahlulahlulahlulahlulahlulahlulahlula iiarhente ze-foam
Iarhente yefilimi yefinyiso yintshatsheli evelisa irhasi kunye neefihlo zePolyreurthane ngaphandle kokusabela kwi-casols kunye neePools. Amanzi ngummeli we-arhente yefilimi yekhemikhali, ephendula necandelo le-schoan ukwenza igesi ye-carbon diokbon diokside, ukuze igobe i-polyarethane yezinto zepoliyo. Iarhente yokwakhiwa komzimba iyinto eyongeziweyo kwinkqubo yemveliso ye-Polyurethane ye-Poureurthane, ezona zithanga zePolyurethane zisebenzisa izinto ezibonakalayo zerhasi. Iiarhente ze-film ze-film zenziwe ikakhulu ezinamabala aphantsi kakhulu, ezifana ne-hydrofluorocarbons (HFC) okanye i-Alkane (HC) imichiza.
Inkqubo yophuhliso yeiarhente ye-foamyaqala ngasekupheleni kweminyaka yee-1950, inkampani ye-DUPON isebenzisa iTrinkloro-Fluoromethane (CFC-11) njenge-Polyurethane i-Polythane Arhente Arhente ye-Poam Foint, yafumana i-CFC-11 isetyenziswe ngokubanzi kwi-Poam yePolyturethane. Njengoko i-CFC-11 ingqineke yonakalisa ungqimba lwe-ozone, amazwe aseNtshona YE-Europhus ayeka ukusebenzisa i-CFC-11 ngasekupheleni kwe-CFC-11 ngo-2007. Njengoko ukunyuswa kokusingqongileyo, amazwe aqala ukukhula nokusebenzisa ezinye iindlela ezinobushushu behlabathi (GWP).
I-HFC-Pay Agents ye-FFEC yayikukubanjwa kwe-CFC-11 kunye ne-HCFC-141b, kodwa ixabiso le-GWP le-HFC lohlobo lwe-HFC lisephezulu, elilungelelene nokukhusela kwendalo. Ke ngoko, kwiminyaka yakutshanje, ukugxila kuphuhliso lweearhente ze-foam kwicandelo lezokwakha zitshintshe ezinye iindlela ze-GWP ezisezantsi.
I-Pros kunye ne-Agents ye-foam
Njengohlobo lwezinto zokufakwa, i-Polyurethane Figid ineenjongo ezininzi, ezinje ngentsebenzo ebalaseleyo yokusebenza, amandla omatshini, ukusebenza kakuhle, inkonzo yexesha elide ubomi kunye nokuzimisela.
Njengomncedisi obalulekileyo kumalungiselelo e-Polyurrethane enzima, iarhente ye-wiming inefuthe elibalulekileyo kwintsebenzo, iindleko kunye nokukhusela isisingqongileyo kwezinto zokufakwa kwengqolowa. Izibonelelo zearhente yokwakhiwa kweekhemikhali zesantya esikhawulezayo, iyunifomu, inokusetyenziswa kuluhlu olubanzi lobushushu kunye nokufuma, unokufumana ireyimu ephezulu yokusebenza, ukuze ilungiselele i-Polyurethane ye-Polyurethane.
Nangona kunjalo, iiarhente ze-ficcoms zinokuvelisa iigesi eziyingozi, ezinje ngekharbon diokside, ikharbon monoxide kunye ne-nitrogen oxiden, ebangela ungcoliseko kwindalo. Inzuzo yommeli we-foam obonakalayo kukuba ayivelisi iigesi eziyingozi, inamachaphaza amancinci kwindalo esingqongileyo, kwaye inokufumana ubungakanani obuncinci obuncinci kunye nokusebenza okungcono. Nangona kunjalo, iiarhente zasemzimbeni zinezinga elicothayo kwaye zifuna ubushushu obuphezulu kunye nokufuma ukuba zenze okona kulungileyo.
Njengohlobo lwezinto zokufakwa, i-Polyurethane Figid ineenjongo ezininzi, ezinje ngentsebenzo ebalaseleyo yokusebenza, amandla omatshini, ukusebenza kakuhle, inkonzo yexesha elide ubomi kunye nokuzimisela.
Njengomncedisi obalulekileyo kumalungiseleloI-Polyurethane Fom, iarhente yokwakhiwa ineempembelelo ezibalulekileyo kwintsebenzo, iindleko kunye nokukhusela isisingqongileyo kwezinto zokuthenga. Izibonelelo zearhente yokwakhiwa kweekhemikhali zesantya esikhawulezayo, iyunifomu, inokusetyenziswa kuluhlu olubanzi lobushushu kunye nokufuma, unokufumana ireyimu ephezulu yokusebenza, ukuze ilungiselele i-Polyurethane ye-Polyurethane.
Nangona kunjalo, iiarhente ze-ficcoms zinokuvelisa iigesi eziyingozi, ezinje ngekharbon diokside, ikharbon monoxide kunye ne-nitrogen oxiden, ebangela ungcoliseko kwindalo. Inzuzo yommeli we-foam obonakalayo kukuba ayivelisi iigesi eziyingozi, inamachaphaza amancinci kwindalo esingqongileyo, kwaye inokufumana ubungakanani obuncinci obuncinci kunye nokusebenza okungcono. Nangona kunjalo, iiarhente zasemzimbeni zinezinga elicothayo kwaye zifuna ubushushu obuphezulu kunye nokufuma ukuba zenze okona kulungileyo.
Imeko yophuhliso lwexesha elizayo
Imeko yearhente yearhente kwimveliso yokwakha yexesha elizayo iphambili kuphuhliso lwe-GWP ephantsi. Umzekelo, i-CO2, i-HFO, kunye nezinye iindlela zamanzi, ezine-GWP ephantsi, zero ODP, kunye nokunyeliswa kokusingqongileyo, ziye zasetyenziswa ngokubanzi kwimveliso yePolyturethane rigid. Ukongeza, njengoko itefa yeTekhnoloji yokwakha iqhubeka liphuhlisa, iarhente ebilayo iya kuphuhlisa ngakumbi ukusebenza ngakumbi, njengokusebenza okungcono kokusebenza, izinga lokutyibilika okuphezulu, kunye nobungakanani obuncinci.
Kwiminyaka yakutshanje, i-OrganofluoFluine yeKhemikhali ePhezulu ifuna kwaye iphuhlise i-fluorine enee-agents zomzimba, kubandakanya iiarhente ze-olefins ezitshatileyo, ezibizwa ngokuba yiarhente ye-Olefin yeSizukulwana yeSigaba seRussity kunye nezibonelelo zendalo.
IXESHA LOKUQALA: Jun-21 ukuya kwi-2024