I-agent ye-polyurethane enegwebu
I-polyurethane foaming agent iwumkhiqizo wenhlanganisela enqamulayo yobuchwepheshe be-aerosol kanye nobuchwepheshe begwebu le-polyurethane.Kunezinhlobo ezimbili zezimo zesiponji ohlotsheni lweshubhu kanye nohlobo lwesibhamu.I-Styrofoam isetshenziswa njenge-ejenti ephuphumayo ekukhiqizeni amagwebu amancane. Ngokuvamile ingahlukaniswa ngezinhlobo ezimbili: uhlobo olungokwenyama kanye nohlobo lwamakhemikhali. Lokhu kusekelwe ekutheni ukukhiqizwa kwegesi kuyinqubo engokoqobo (I-Volatilization noma i-sublimation) noma inqubo yamakhemikhali(Ukubhujiswa kwesakhiwo samakhemikhali noma okunye ukusabela kwamakhemikhali)
Igama lesiNgisi
I-PU Foam
Ubuchwepheshe
Ubuchwepheshe be-aerosol kanye nobuchwepheshe be-polyurethane foam
Izinhlobo
Uhlobo lwe-tube kanye nohlobo lwesibhamu
Isingeniso
I-ejenti enegwebu le-polyurethane igama eligcwele ingxenye eyodwa ye-polyurethane foam sealant. Amanye amagama: i-ejenti enegwebu, i-styrofoam, i-PU sealant. I-PU FOAM yesiNgisi ingumkhiqizo wokuhlanganiswa okuphambanayo kobuchwepheshe be-aerosol kanye nobuchwepheshe begwebu le-polyurethane. Kungumkhiqizo okhethekile we-polyurethane lapho izingxenye ezifana ne-polyurethane prepolymer, i-ejenti efuthayo, kanye ne-catalyst zigcwaliswa ethini le-aerosol elikwazi ukumelana nokucindezela. Uma impahla ifuthwa ethangini le-aerosol, into efana negwebu ye-polyurethane izokhula ngokushesha futhi izoqina futhi isabele ngomoya noma umswakama ku-substrate ukuze yenze igwebu.Uhlu olubanzi lwezinhlelo zokusebenza. Inezinzuzo ze-foaming yangaphambili, ukunwetshwa okuphezulu, ukuncipha okuncane, njll.Futhi igwebu linamandla amahle nokunamathela okuphezulu. Igwebu elilashiwe linemithelela ehlukahlukene efana ne-caulking, i-bonding, i-sealing, ukushisa ukushisa, ukumuncwa komsindo, njll.Iyinto yokwakha enobungani bemvelo, ewonga amandla futhi kulula ukuyisebenzisa. Ingasetshenziselwa ukufaka uphawu nokuxhuma, ukugcwalisa izikhala, ukulungisa nokubopha, ukugcinwa kokushisa kanye nokufakwa komsindo, futhi kulungele ngokukhethekile ukufakwa uphawu nokuvimbela amanzi phakathi kwensimbi yepulasitiki noma i-aluminium alloy iminyango namafasitela nezindonga.
Incazelo yokusebenza
Ngokuvamile, isikhathi sokoma esingaphezulu singaba yimizuzu eyi-10 (ngaphansi kwezinga lokushisa lekamelo elingu-20°C).Isikhathi esomile esiphelele siyahlukahluka ngezinga lokushisa elizungezile kanye nomswakama. Ngaphansi kwezimo ezijwayelekile, isikhathi esomile esiphelele ehlobo singamahora angama-4-6, futhi kuthatha amahora angama-24 noma ngaphezulu ukomisa cishe kuqanda ebusika. kulinganiselwa ukuthi impilo yayo yokusebenza ngeke ibe ngaphansi kweminyaka eyishumi. Igwebu elilashiwe ligcina ukunwebeka okuhle nokunamathela ebangeni lokushisa elingu--10℃～80℃. Igwebu elilashiwe linemisebenzi yokuhlanganisa, ukubopha, ukuvala, njll.Ngaphezu kwalokho, i-ejenti eyenza amagwebu e-polyurethane evimbela ilangabi ingafinyelela esikhumbeni se-flame retardant sebanga lika-B no-C.
Ububi
1. I-agent ye-polyurethane foam caulking, izinga lokushisa liphezulu, lizogeleza, futhi ukuzinza kumpofu. Ayizinzile njengegwebu eliqinile le-polyurethane.
2. I-Polyurethane foam sealant, isivinini esinegwebu sihamba kancane, ukwakhiwa kwendawo enkulu akukwazi ukwenziwa, flatness ayikwazi ukulawulwa, futhi ikhwalithi yegwebu impofu kakhulu.
3. I-polyurethane foam sealant, iyabiza
Isicelo
1. Ukufakwa komnyango namafasitela: Ukuvala, ukulungisa nokubopha phakathi kweminyango namafasitela nezindonga.
2. Imodeli yokukhangisa: Imodeli, ukukhiqizwa kwetafula lesihlabathi, ukulungiswa kwebhodi lombukiso
3. Ukuvimbela umsindo: Ukugcwalisa izikhala ekuhlobiseni kwamagumbi okukhuluma kanye namagumbi okusakaza, okungadlala ukuvaleka komsindo nomphumela wokuthulisa.
4. Ukulima:Ukuhlelwa kwezimbali, ukutshala ingadi nokwakheka kwezwe, ukukhanya nokuhle
5. Ukunakekelwa kwansuku zonke: Ukulungiswa kwemigodi, izikhala, amathayela odongeni, amathayela aphansi, kanye naphansi
6. Ukuxhunywa okungangeni manzi: Lungisa futhi uxhume ukuvuza kwamapayipi amanzi, indle, njll.
7. Ukupakisha nokuthumela: Ingakwazi ukugoqa izinto ezibalulekile nezintekenteke, ukonga isikhathi nesivinini, i-shockproof kanye nokumelana nengcindezi.
Iziyalezo
1. Ngaphambi kokwakhiwa, amabala amafutha kanye nothuli oluntantayo endaweni yokwakha kufanele kususwe, futhi inani elincane lamanzi kufanele lifafazwe endaweni yokwakha.
2. Ngaphambi kokusebenzisa, nyakazisa ithangi le-polyurethane eligwebuzelayo okungenani imizuzwana engama-60 ukuze uqinisekise ukuthi okuqukethwe ethangini kufana.
3. Uma kusetshenziswa i-agent ekhipha amagwebu yohlobo lwesibhamu i-polyurethane, phendulela ithangi libheke phansi ukuze uxhume nentambo yesibhamu sokufutha, vula i-valve yokugeleza, bese ulungisa ukugeleza ngaphambi kokufutha. Uma kusetshenziswa i-agent ye-polyurethane eyenza amagwebu yohlobo lweshubhu, screw ipulasitiki entanjeni yevalvu, qondanisa ipayipi lepulasitiki nesikhala, bese ucindezela umlomo wombhobho ukuze ufafaze.
4. Naka ijubane lokuhamba lapho ufutha, imvamisa umthamo womjovo ungaba uhhafu wevolumu yokugcwalisa edingekayo. Gcwalisa izikhala eziqondile ukusuka phansi kuye phezulu.
5. Uma ugcwalisa izikhala ezifana nophahla, igwebu elingalapheki lingase liwe ngenxa yamandla adonsela phansi. Kunconywa ukuthi unikeze ukwesekwa okufanele ngokushesha ngemva kokugcwalisa, bese uhoxisa ukusekelwa ngemuva kokuthi i-foam iphulukiswe futhi iboshwe odongeni lwegebe.
6. Igwebu lizokhishwa cishe imizuzu eyi-10, futhi lingasikwa ngemva kwemizuzu engama-60.
7. Sebenzisa ummese ukuze unqume igwebu elidlulele, bese ugcoba indawo engaphezulu ngodaka lukasimende, upende noma ijeli ye-silica.
8. Kala i-ejenti enegwebu ngokwezidingo zobuchwepheshe, engeza izikhathi ezingu-80 zamanzi acwebile ukuze uhlanjululwe ukuze wenze uketshezi olugwebu; bese usebenzisa umshini okhipha amagwebu ukuze ugwebe uketshezi olunegwebu, bese ufaka igwebu ku-slurry kasimende we-magnesite oxubene ngokulinganayo ngokwenani elinqunywe kusengaphambili Govuza ngokulinganayo, futhi ekugcineni uthumele i-slurry ye-magnesite enegwebu emshinini wokwenza noma isikhunta ukuze wenze.
Amanothi Okwakha:
Izinga lokushisa elijwayelekile lokusetshenziswa kwethangi le-polyurethane eligwebulile lingu-+5℃+40℃, izinga lokushisa elingcono kakhulu lokusebenzisa +18+25℃. Endabeni yokushisa okuphansi, kunconywa ukuthi ubeke lo mkhiqizo ezingeni lokushisa elingaguquki elingu-+25°+30℃ imizuzu engu-30 ngaphambi kokuwusebenzisa ukuze uqinisekise ukusebenza kwawo okuhle kakhulu.Ibanga lokumelana nezinga lokushisa legwebu elilashiwe lingu -35℃～ +80℃.
I-Polyurethane Foaming agent iyigwebu eliphulukisa umswakama. Kufanele ifuthwe endaweni emanzi uma isetshenziswa. Uma umswakama uphezulu, kuyashesha ukuphulukiswa.Igwebu elinganqanyuliwe lingahlanzwa nge-ejenti yokuhlanza, kuyilapho igwebu elilashiwe kufanele lisuswe ngezindlela zemishini (i-sanding noma ukusika). Igwebu elilashiwe lizoba phuzi ngemva kokukhanyiswa ukukhanya kwe-ultraviolet. Kunconywa ukugqoka ubuso be-foam obuphulukisiwe nezinye izinto (udaka lukasimende, upende, njll.). Ngemuva kokusebenzisa isibhamu se-spray, sicela usihlanze nge-ejenti yokuhlanza ekhethekile ngokushesha.
Lapho ushintsha ithangi, nyakazisa ithangi elisha kahle (ukunyakazisa okungenani izikhathi ezingu-20), khipha ithangi elingenalutho, bese ushintsha ngokushesha ithangi elisha ukuze uvimbele imbobo yokuxhuma isibhamu sokufutha ukuthi singaqini.
I-valve yokulawula ukugeleza kanye ne-trigger yesibhamu se-spray ingakwazi ukulawula ubukhulu bokugeleza kwegwebu. Uma umjovo uyeka, vala ngokushesha i-valve yokugeleza ngendlela yewashi.
Izinyathelo Zokuphepha
Igwebu elingelapheki linamathela esikhunjeni nasezimpahleni. Ungathinti isikhumba sakho nezingubo ngesikhathi sokusebenzisa. Ithangi le-polyurethane elinegwebu elinogwebu linomfutho ongu-5-6kg/cm2 (25℃) , futhi izinga lokushisa akufanele lidlule ku-50℃ phakathi nokugcinwa nokuthuthwa ukuze kuvinjelwe ukuqhuma kwethangi.
Amathangi e-polyurethane foaming ejenti kufanele avikelwe elangeni eliqondile futhi izingane zivinjelwe ngokuqinile. Amathangi angenalutho ngemva kokusetshenziswa, ikakhulukazi amathangi afakwe amagwebu e-polyurethane angasetshenziswanga, akufanele alahlwe. Akuvunyelwe ukushisa noma ukubhoboza amathangi angenalutho.
Gwema amalangabi avulekile futhi ungaxhumani nezinto ezivuthayo neziqhuma.
Indawo yokwakha kufanele ibe nomoya omuhle, futhi izisebenzi zokwakha kufanele zigqoke amagilavu okusebenza, amaovaroli kanye nezibuko lapho kwakhiwa, futhi zingabhemi.
Uma kwenzeka igwebu lithinta amehlo, sicela ugeze ngamanzi ngaphambi kokuya esibhedlela uyokwelashwa; uma ithinta isikhumba, hlambulula ngamanzi nangensipho
Inqubo yokwenza amagwebu
1. Indlela ye-Prepolymer
Inqubo ye-pre-polymer yokwenza amagwebu iwukwenza (impahla emhlophe) kanye (impahla emnyama) ibe yi-pre-polymer kuqala, bese wengeza amanzi, i-catalyst, i-surfactant, ezinye izithasiselo ku-pre-polymer, bese uxuba ngaphansi kokunyakaziswa kwesivinini esikhulu. Gcoba, ngemva kokuphulukiswa, ingelapheka ekushiseni okuthile
2. Indlela ye-semi-prepolymer
Inqubo yokwenza amagwebu yendlela ye-semi-prepolymer ukwenza ingxenye ye-polyether polyol (impahla emhlophe) ne-disocyanate (impahla emnyama) ibe yi-prepolymer, bese uhlanganisa enye ingxenye ye-polyether noma i-polyester polyol ne-disocyanate, amanzi , Ama-Catalysts, ama-surfactants, ezinye izithasiselo, njll. ziyengezwa futhi zixutshwe ngaphansi kokuvuselela ngesivinini esikhulu ukuze kukhihlize amagwebu.
3. Isinyathelo esisodwa sokukhihliza amagwebu
Faka i-polyether noma i-polyester polyol (impahla emhlophe) kanye ne-polyisocyanate (impahla emnyama), amanzi, i-catalyst, i-surfactant, i-ejenti efuthayo, ezinye izithasiselo nezinye izinto zokusetshenziswa esinyathelweni esisodwa, bese uxuba ngaphansi kokugqugquzela ngesivinini esikhulu bese kuba yigwebu.
Isinyathelo esisodwa sokwenza amagwebu inqubo evame ukusetshenziswa. Kukhona nendlela yokwenza amagwebu ngesandla, okuyindlela elula kakhulu. Ngemva kokuba zonke izinto ezisetshenziswayo zikalwe ngokunembile, zifakwa esitsheni, bese lezi zinto zokusetshenziswa zixutshwa ngokufanayo futhi zijovelwe esikhunjeni noma isikhala esidinga ukugcwaliswa ngegwebu. Qaphela: Uma ukala, i-polyisocyanate (impahla emnyama) kufanele ikalwe ekugcineni.
Igwebu le-polyurethane eliqinile ngokuvamile lifakwe amagwebu ekamelweni lokushisa, futhi inqubo yokubumba ilula. Ngokwezinga lemishini yokwakha, ingahlukaniswa ibe amagwebu okwenziwa ngesandla kanye ne-mechanical foaming. Ngokusho kwengcindezi ngesikhathi sokugwebulwa, ingahlukaniswa ibe amagwebu anomfutho ophezulu kanye namagwebu anomfutho ophansi. Ngokwendlela yokubumba, ingahlukaniswa ngokuthulula amagwebu kanye nokufutha igwebu.
Inqubomgomo
I-ejenti yokukhipha amagwebu ye-polyurethane yafakwa ohlwini Umnyango Wezokwakha njengomkhiqizo ozothuthukiswa futhi usetshenziswe phakathi nesikhathi “soHlelo Lweminyaka Emihlanu”.
Ukulindelwe kwemakethe
Kusukela ngo-2000 imikhiqizo yathuthukiswa futhi yasetshenziswa eChina, isidingo semakethe sikhule ngokushesha. Ngo-2009, ukusetshenziswa konyaka kwemakethe yezokwakha kazwelonke kudlule amathini ayizigidi ezingu-80. Ngokuthuthukiswa kwezidingo zekhwalithi yokwakha kanye nokukhuthazwa kwezakhiwo ezonga amandla, imikhiqizo enjalo Inani le-glutathione lizokhula kancane kancane esikhathini esizayo.
Ngaphakathi, ukwakhiwa nobuchwepheshe bokukhiqiza balolu hlobo lomkhiqizo sebuchwepheshile ngokugcwele, ama-agent akhipha amagwebu angenayo i-fluorine angabhubhisi ungqimba lwe-ozone ngokuvamile asetshenziswa, futhi imikhiqizo enegwebu langaphambili (1) iye yathuthukiswa. Ngaphandle kokuthi abanye abakhiqizi basasebenzisa izingxenye zamavalvu ezingenisiwe, ezinye izinto ezingavuthiwe ezisekelayo zenziwe ekhaya.
Incwadi yeziqondiso
(1)Lokhu okubizwa ngokuthi i-pre-foaming kusho ukuthi u-80% we-polyurethane ekhipha amagwebu akhihlizwe amagwebu ngemva kokufafaza, futhi ukugwebulwa okulandelayo kuncane kakhulu.
Lokhu kuvumela izisebenzi ukuba zibambe amandla ezandla zazo lapho zisebenzisa isibhamu esinamagwebu, esilula futhi esikahle futhi esingachithi iglue. Ngemva kokuba igwebu selifuthwe, ingcina kancane kancane iba mkhulu kunalapho idutshulwa.
Ngale ndlela, kunzima kubasebenzi ukubamba amandla okudonsa i-trigger ezandleni zabo, futhi kulula ukuchitha i-glue, okungenani i-1/3 yemfucuza. Ngaphezu kwalokho, iglue ekwandisiwe ngemva kokunwetshwa kulula ukucindezela iminyango namafasitela ngemva kokuphulukisa, njengeglue evamile embonini yemakethe.
Isikhathi sokuthumela: May-25-2021