I-polystyrene enwetshiwe (EPS), i-polystyrene enwetshiwe (XPS) kanye ne-polyurethane (PU) okwamanje ziyizinto ezintathu eziphilayo ezisetshenziswa kakhulu ekufakweni kodonga lwangaphandle.Phakathi kwazo, i-PU okwamanje ibhekwa njengento engcono kakhulu yokweqa emhlabeni, ene-conductivity ephansi kakhulu yokushisa phakathi kwazo zonke izinto zokufakelwa.Uma ukuminyana kwe-PU eqinile kungu-35~40 kg/m3, ukuqhutshwa kwayo okushisayo kungu-0.018~0.023W/(mK kuphela).Umthelela wokufakelwa kwegwebu le-PU eliqinile elingu-25mm ulingana nalowo we-EPS engu-40mm ugqinsi, uvolo owugqinsi obungu-45mm, ukhonkolo owugqinsi ongu-380mm noma isitini esijwayelekile esingu-860mm.Ukuze kuzuzwe umphumela ofanayo wokufakelwa, ukujiya kwawo cishe kuyingxenye ye-EPS kuphela.

Umbiko wakamuva uveze ukuthi esinye sezizathu zokusabalala komlilo ngokushesha e-Hangzhou Ice kanye ne-Snow World ukuthi izinto zokufakelwa kwe-PU kanye nezitshalo eziluhlaza ezilingisayo zepulasitiki ezifakwe ezakhiweni azihlangabezani nezidingo zokungashi kanye nokuncipha komlilo, umusi wenyuka masinyane emva komlilo.Isizathu sesibili ukuthi izinyathelo zokuhlukanisa umlilo nezinyathelo zokuvimbela intuthu phakathi kwe-Hangzhou Ice ne-Snow World nezinye izindawo esakhiweni bezingekho.Udonga lwangaphakathi lwenziwe ngephaneli yesangweji le-PU, futhi iminyango yokuphuma iyiminyango efakwe ezishisayo esikhundleni seminyango elinganiswe nomlilo, okubangele ukuthi umlilo usakaze ngokushesha esitezi sonke sesibili ngemva kokugqashuka komlilo.

Enye yezimbangela zokulimala ukuthi ngemva kokuqubuka komlilo, izinto ezifana nePU kanye nezitshalo zepulasitiki zasha endaweni enkulu, zakhiqiza intuthu enobuthi eshisa kakhulu, futhi intuthu evuthayo ephumile yayilokhu ibuthana futhi ekugcineni yabangela ukuwohloka komlilo, okuholela ekulimaleni.

Kuthe kusenjalo, izinto zokufakelwa kwe-PU zaba into ehloswe ngayo ukugxekwa futhi zawela esivunguvungwini sombono womphakathi!

Uma uzindla ngalesi siqephu, inkulumo-nkulumo ibheke ohlangothini olulodwa, futhi kukhona okubili okunganele.

Okokuqala: Izinto zokufakelwa kwe-PU kanye nezitshalo eziluhlaza zepulasitiki ezilingisayo ezisetshenziswe ezakhiweni azizange zihlangabezane nezidingo zokungashi kanye nokuncipha komlilo.

Ngokuvumelana ne-GB8624-1997 Classification for Burning Behaviour of Building Products, i-polyurethane yeleveli ye-B2 ingathuthukiswa ibe ileveli ye-B1 ngemva kokwengeza izinqamuleli zomlilo ezikhethekile.Yize amabhodi okufakwa kwe-PU enezici zezinto eziphilayo, angafinyelela kuphela ebangeni le-B1 elincisha ilangabi ngaphansi kwezimo zamanje zobuchwepheshe.Ngaphezu kwalokho, kusenezingqinamba zobuchwepheshe nobunzima ekuthuthukisweni nasekukhiqizweni kwamabhodi okufakwa kwe-PU esezingeni le-B1.Amabhodi e-PU akhiqizwa amabhizinisi amaningi amaShayina amancane naphakathi angafinyelela izinga le-B2 noma le-B3 kuphela.Kodwa-ke, abakhiqizi abaningana abakhulu eChina basengakwazi ukukufeza.Amabhodi okufakwa kwe-PU enziwe nge-polyether ehlanganisiwe kanye ne-PMDI (i-Polymethylene polyphenyl polyisocyanate) ukuze kuphendule amagwebu futhi ahlukaniswa njenge-B1-retardant nge-GB8624-2012 evamile.Le nto ye-organic insulation isetshenziswa kakhulu emikhakheni yezakhiwo ezonga amandla, indawo yokugcina amakhaza amakhulu kanye nokufakwa kwamaketanga abandayo.Ingase futhi isetshenziselwe ukuvimbela umlilo kanye nokufakwa kwe-thermal ezitshalweni zezimboni, imikhumbi, izimoto, ukwakhiwa kokugcinwa kwamanzi kanye neminye imikhakha eminingi.

Okwesibili: Intuthu isakazeka ngokushesha ngemva kokuba umlilo kanye nezinto zokufakwa kwe-PU zinobuthi.

Kube nenkulumompikiswano enkulu mayelana nobuthi be-polyurethane, ikakhulukazi lapho kwenzeka izingozi ezifana nokushiswa kwezinto ze-PU.Njengamanje, i-polyurethane eselashiwe yaziwa kabanzi njengezinto ezingenabo ubuthi, futhi ezinye izinto ze-PU yezokwelapha zisetshenziswe kumishini yezokwelapha efakelwayo kanye nezingxenye.Kodwa i-polyurethane engelashiwe isengaba yingozi.Igwebu le-PU eliqinile liwuhlobo lwezinto zokusetha ukushisa.Lapho lishiswa, kwakheka ungqimba lwe-carbonized ebusweni balo, futhi ungqimba lwe-carbonized lungavimbela ilangabi ukuthi lingabhebhetheki.I-EPS ne-XPS yizinto ezisetshenziswayo ze-thermoplastic ezizoncibilika futhi ziconse lapho zivezwe emlilweni, futhi lawa madriphu angasha.

Imililo ayibangelwa kuphela izinto zokufakelwa.Izakhiwo kufanele zithathwe njengohlelo.Ukusebenza komlilo kwesistimu yonke kuhlobene nezinto ezihlukahlukene ezifana nokuphathwa kokwakhiwa nokugcinwa kwansuku zonke.Akubalulekanga kangako ukugcizelela ngobumpumputhe izinga lezinto zokwakha.“Eqinisweni, indaba ngokwayo ilungile.Okubalulekile wukusebenzisa ngendlela efanele nangendlela efanele.”Eminyakeni eminingi edlule, uLi Jianbo, iphini likanobhala-jikelele we-China Polyurethane Industry Association, wayegcizelele ngokuphindaphindiwe izindaba ezifanayo ezinkundleni nasezifundweni ezihlukahlukene.Ukuphathwa kwesizinda esinesiphithiphithi nokungaqondi kahle kwemikhiqizo engafanelekile nengathobeli imithetho yizici eziyinhloko ezibangela imililo, futhi akufanele sikhombe umunwe ezintweni ezisetshenziswayo uma kwenzeka inkinga.Ngakho namanje, inkinga isekhona.Ikhonjwe ngobumpumputhe njengenkinga yezinto ze-PU, isiphetho singase sibe sohlangothi olulodwa kakhulu.

Isimemezelo:Isihloko sicashunwe ku-https://mp.weixin.qq.com/s/8_kg6ImpgwKm3y31QN9k2w (isixhumanisi sinamathiselwe).Ukuxhumana nokufunda kuphela, ungenzi ezinye izinjongo zezohwebo, akumele imibono nemibono yenkampani, uma udinga ukuphrinta kabusha, sicela uxhumane nomlobi wokuqala, uma kukhona ukwephulwa, sicela usithinte ngokushesha ukuze wenze ukucubungula ukususa.