I-polystyrene eyandisiweyo (EPS), i-polystyrene eyongeziweyo (i-XPS) kunye ne-polyurethane (PU) okwangoku zizinto ezintathu eziphilayo ezisetyenziswa kakhulu kwi-insulation yangaphandle eludongeni.Phakathi kwazo, i-PU okwangoku yamkelwa njengeyona nto intle yokugquma emhlabeni, eneyona mveliso isezantsi ye-thermal phakathi kwazo zonke izinto zokugquma.Xa ubuninzi be-PU eqinile yi-35 ~ 40 kg / m3, i-thermal conductivity yayo yi-0.018 ~ 0.023W / (mK kuphela).Isiphumo sokugquma se-25mm-thick-rigid PU foam silingana ne-40mm-thick EPS, i-45mm-thick mineral wool, i-concrete ye-380mm okanye i-860mm-yezitena eziqhelekileyo.Ukufezekisa umphumo ofanayo wokugquma, ubukhulu bayo bumalunga nesiqingatha se-EPS kuphela.

Ingxelo yakutshanje ibonise ukuba esinye sezizathu zokusasazeka ngokukhawuleza komlilo kwi-Hangzhou Ice kunye ne-Snow World kukuba izinto zokugquma i-PU kunye nezityalo ezifaniswayo zeplastiki eziluhlaza ezifakwe kwizakhiwo azizange zihlangabezane neemfuno zokungatsha kunye nokutshatyalaliswa komlilo, watsha umsi ngokukhawuleza emva komlilo.Isizathu sesibini kukuba imilinganiselo yokwahlula umlilo kunye namanyathelo okuthintela umsi phakathi kwe-Hangzhou Ice kunye ne-Snow World kunye nezinye iindawo kwisakhiwo zazingekho.Udonga lwangaphakathi lwenziwe ngephaneli ye-sandwich ye-PU, kwaye iingcango zokuphuma ziyiminyango ye-thermal insulated endaweni yeengcango ezinomlilo, ezibangele ukuba umlilo usasazeke ngokukhawuleza kuwo wonke umgangatho wesibini emva kokuba umlilo uqhume.

Esinye sezizathu zokulimala kukuba emva kokuba kuqhambuke umlilo, izinto ezifana nePU kunye nezityalo zeplastiki zitshiswe kwindawo enkulu, zivelisa umsi onobushushu obushushu obuphezulu, kwaye umsi ovuthayo okhutshweyo wawugcina uqokelela kwaye ekugqibeleni ubangele ukuchithwa, okukhokelela kwiingxwelerha.

Ngequbuliso, izinto zokufakelwa kwe-PU zaba yinto ekujoliswe kuyo yokugxekwa kwaye yawela kwisaqhwithi sombono woluntu!

Ukuphonononga kwesi sicatshulwa, i-rhetoric ijonge kwicala elinye, kwaye kukho izinto ezimbini ezingafanelekanga.

Okokuqala: Izixhobo zokugquma i-PU kunye nezityalo zeplastiki ezifanisiweyo ezifakwe kwizakhiwo azizange zihlangabezane neemfuno zokungatsha kunye nokutshatyalaliswa komlilo.

Ngokutsho koHlelo lwe-GB8624-1997 yokuTshisa ukuPhatha kweMveliso yeZakhiwo, i-polyurethane ye-B2-level inokuphuculwa kwinqanaba le-B1 emva kokongeza i-flame retardants ekhethekileyo.Nangona iibhodi ze-PU ze-insulation zineempawu zezinto eziphilayo, zinokufikelela kuphela kwibanga le-flame retardant ye-B1 phantsi kweemeko zobugcisa zangoku.Ngapha koko, kusekho imiqobo yobugcisa kunye nobunzima kuphuhliso kunye nokuveliswa kweebhodi zokugquma ze-PU zenqanaba le-B1.Iibhodi zePU eziveliswe ngamashishini amancinci amancinci naphakathi aseTshayina anokufikelela kuphela kwinqanaba leB2 okanye leB3.Nangona kunjalo, abavelisi abaninzi abakhulu eTshayina basenokuyifumana.Iibhodi ze-PU zokugquma zenziwe nge-polyether edibeneyo kunye ne-PMDI (i-Polymethylene polyphenyl polyisocyanate) ukwenzela ukusabela okugwebu kwaye ihlelwe njenge-B1 i-flame-retardant ngomgangatho we-GB8624-2012.Esi sigqubuthelo sezinto eziphilayo sisetyenziswa ikakhulu kwimimandla yezakhiwo ezigcina umbane, ugcino olukhulu olubandayo kunye nokugqunywa kwekhonkco elibandayo.Ingasetyenziselwa ukuthintela umlilo kunye nokufakelwa kwe-thermal kwizityalo zoshishino, iinqanawa, izithuthi, ukwakhiwa kokugcinwa kwamanzi kunye namanye amacandelo amaninzi.

Okwesibini: Umsi usasazeka ngokukhawuleza emva kokuba umlilo kunye ne-PU insulation material inetyhefu.

Kwakukho ingxoxo eninzi malunga netyhefu ye-polyurethane, ngakumbi xa iingozi ezifana nokutshiswa kwezinto ze-PU kwenzeka.Okwangoku, i-polyurethane enyangisiweyo yamkelwa ngokubanzi njengezinto ezingenayo ityhefu, kwaye ezinye izixhobo zonyango ze-PU ziye zasetyenziswa kwizixhobo zonyango ezifakelweyo kunye namalungu.Kodwa i-polyurethane enganyangwanga isenokuba yingozi.Engqongqo PU amagwebu luhlobo lwemathiriyeli thermosetting.Xa itshiswa, i-carbonized layer yenziwe phezu kwayo, kwaye i-carbonized layer inokuthintela ilangatye ukuba lisasazeke.I-EPS kunye ne-XPS zizinto ze-thermoplastic eziya kunyibilika kwaye zithontsize xa zibekwe emlilweni, kwaye ezi zithontsi zinokutsha.

Imililo ayibangelwa kuphela zizinto zokugquma.Izakhiwo kufuneka zithathwe njengenkqubo.Ukusebenza komlilo kwenkqubo yonke kuhambelana nezinto ezahlukeneyo ezifana nolawulo lolwakhiwo kunye nokugcinwa kwemihla ngemihla.Kungabalulekanga kancinci ukugxininisa ngokumfamekileyo ibakala le-flame retardant yezinto zokwakha.“Enyanisweni, umbandela ngokwawo ulungile.Undoqo kukusebenzisa ngokuchanekileyo nangokufanelekileyo. ”Kwangoko kwiminyaka emininzi eyadlulayo, u-Li Jianbo, usekela-sosiba-jikelele we-China Polyurethane Industry Association, wayesoloko egxininisa imiba efanayo kwiiforam neesemina ezahlukeneyo.Isiphithiphithi solawulo lwesiza solwakhiwo kunye nokubekwa kweliso okulambathayo kweemveliso ezingachanekanga nezingahambelaniyo zezona zinto zibangela imililo, kwaye akufuneki sikhombane ngomnwe kwizinto ezisetyenziswayo xa kukho ingxaki.Ngoko nangoku, ingxaki isekho.Ichongiwe ngobumfama njengengxaki yezixhobo zePU, isiphelo sinokuba sicala elinye kakhulu.

Isibhengezo:Inqaku licatshulwe ku-https://mp.weixin.qq.com/s/8_kg6ImpgwKm3y31QN9k2w (ikhonkco eliqhotyoshelweyo).Kuphela ukunxibelelana kunye nokufunda, ungenzi ezinye iinjongo zorhwebo, ayimeli iimbono kunye nezimvo zenkampani, ukuba ufuna ukuphinda uprinte, nceda uqhagamshelane nombhali wokuqala, ukuba kukho ukuphulwa, nceda uqhagamshelane nathi ngokukhawuleza ukwenza ukucima ukusetyenzwa.