Mushonga wePolyurethane unoburitsa furo
Mushonga wePolyurethane unobva mukusanganiswa kwetekinoroji yeaerosol netekinoroji yepolyurethane foam. Kune mhando mbiri dzema spongy states pamhando yechubhu nerudzi rwepfuti. Styrofoam inoshandiswa semushonga wefuro mukugadzira furo re microcellular. Inogona kukamurwa kuita mhando mbiri: mhando yepanyama nerudzi rwemakemikari. Izvi zvinoenderana nekuti kugadzirwa kwegasi iri chiito chepanyama (Volatilization kana sublimation) kana kuti chiito chemakemikari (Kuparadzwa kwechimiro chemakemikari kana mamwe maitiro emakemikari)
Zita rechiRungu
PU Foam
Tekinoroji
Tekinoroji yeaerosol uye tekinoroji yefuro repolyurethane
Mhando
Rudzi rwechubhu uye rudzi rwepfuti
Nhanganyaya
Mushonga wePolyurethane une zita rakazara unoti chinhu chimwe chete chinonzi polyurethane foam sealant. Mamwe mazita: mushonga weFoam, styrofoam, PU sealant. PU FOAM chigadzirwa chemusanganiswa wetekinoroji yeaerosol netekinoroji yepolyurethane foam. Ichi chigadzirwa chakakosha chepolyurethane umo zvinhu zvakaita sepolyurethane prepolymer, mushonga wekuputira, uye catalyst zvinozadzwa mugaba reaerosol rinodzivirira kumanikidzwa. Kana chinhu chacho chikapfapfaidzwa kubva mutangi reaerosol, chinhu chakaita sepolyurethane chinokura nekukurumidza uye chinosimba uye chinoita semhepo kana hunyoro huri mu substrate kuti chigadzire furo. Mashandisirwo akasiyana-siyana. Chine zvakanakira zvekufuridzira furo pamberi, kuwedzera kwakanyanya, kuderera kudiki, nezvimwewo. Uye furo rine simba rakanaka uye rinonamira zvakanyanya. Furo rakagadziriswa rine mhedzisiro dzakasiyana-siyana dzakadai sekubata, kusunga, kuvhara, kupisa, kunyudza ruzha, nezvimwewo. Chinhu chekuvaka chine hushamwari kune nharaunda, chinochengetedza simba uye chiri nyore kushandisa. Inogona kushandiswa pakusunga nekubatanidza, kuzadza mipata, kugadzirisa nekubatanidza, kuchengetedza kupisa uye kudzivirira ruzha, uye inonyanya kukodzera pakusunga nekudzivirira mvura pakati pemasuo epurasitiki kana aruminiyamu, mahwindo nemadziro.
Tsananguro yekushanda
Kazhinji, nguva yekuomesa pamusoro inenge maminetsi gumi (pasi pekupisa kwemukamuri 20°C). Nguva yekuomesa yese inosiyana zvichienderana nekupisa kwemunzvimbo uye hunyoro. Mumamiriro ezvinhu akajairwa, nguva yekuomesa yese muzhizha inenge maawa mana kusvika matanhatu, uye zvinotora maawa makumi maviri nemana kana kupfuura kuti aome paanenge zero muchando. Mumamiriro ezvinhu akajairwa ekushandiswa (uye nechikamu chekufukidza pamusoro), zvinofungidzirwa kuti hupenyu hwayo hwekushanda hahuzove pasi pemakore gumi. Furo rakaomesa rinochengetedza kutwasuka kwakanaka uye kunamira mukupisa kwe -10℃ ~ 80℃. Furo rakaomesa rine mabasa ekubatanidza, kusungira, kuvhara, nezvimwewo. Pamusoro pezvo, mushonga wepolyurethane unodzivirira moto unogona kusvika paB neC grade flame retardant.
Kusagadzikana
1. Mushonga wekubvisa furo wepolyurethane, tembiricha yakakwira, inoyerera, uye kugadzikana kwayo hakuna kunaka. Haina kugadzikana sefuro repolyurethane.
2. Polyurethane foam sealant, kumhanya kwefuro kunononoka, kuvaka nzvimbo yakakura hakugone kuitwa, kusatsetseka hakugone kudzorwa, uye mhando yefuro haina kunaka.
3. Polyurethane furo sealant, inodhura
Kushandiswa
1. Kuisa gonhi nemahwindo: Kuvhara, kugadzirisa nekubatanidza magonhi nemahwindo nemadziro.
2. Muenzaniso wekushambadzira: Muenzaniso, kugadzirwa kwetafura yejecha, kugadziriswa kwebhodhi rekuratidzira
3. Kudzivirira ruzha: Kuzadza mipata iri mukushongedza makamuri ekutaura nemakamuri ekuparadzira, izvo zvinogona kudzivirira ruzha uye kunyaradza ruzha.
4. Kurima: Kuronga maruva, kurima nekugadzika maruva, kwakajeka uye kwakanaka
5. Kugadzirisa zuva nezuva: Kugadzirisa makomba, mipata, mataira emadziro, mataira epasi, uye pasi
6. Kuvhara mvura: Kugadzirisa nekuvharira maburi ari mumapombi emvura, mapaipi etsvina, nezvimwewo.
7. Kurongedza nekutumira: Inogona kuputira zvinhu zvinokosha uye zvisina kusimba zviri nyore, ichichengetedza nguva nekumhanya, inodzivirira kuvhunduka uye inodzivirira kumanikidzwa
Mirayiridzo
1. Pamberi pekuvaka, mavara emafuta neguruva rinoyangarara pamusoro pekuvaka zvinofanira kubviswa, uye mvura shoma inofanira kupfapfaidzwa pamusoro pekuvaka.
2. Usati washandisa, zunza tangi repolyurethane foaming agent kwemasekondi makumi matanhatu kuti uve nechokwadi chekuti zviri mukati metangi zvakaenzana.
3. Kana muchina wekugadzira furo wemhando yepfuti unoshandiswa, tendeudza tangi kuti ibatanidzwe neshinda yepfuti inopfapfaidza, vhura vharuvhu inoyerera, uye gadzirisa kuyerera kwemvura usati wapfapfaidza. Kana muchina wekugadzira furo wemhando yechubhu unoshandiswa, vhara muromo wepurasitiki pashinda yevharuvhu, gadzirisa pombi yepurasitiki nepakati, uye dzvanya muromo kuti ufapfaidze.
4. Cherechedza kumhanya kwekufamba paunenge uchipfapfaidza, kazhinji huwandu hwejekiseni hunogona kuva hafu yehuwandu hunodiwa hwekuzadza. Zadza mipata yakamira kubva pasi kusvika kumusoro.
5. Pakuzadza mipata yakaita sedenga, furo risina kucheneswa rinogona kudonha nekuda kwesimba rinokwevera pasi. Zvinokurudzirwa kupa rutsigiro rwakakodzera nekukurumidza mushure mekuzadzwa, wobva wabvisa rutsigiro mushure mekunge furo racheneswa uye rabatanidzwa pamadziro emupata.
6. Furo rinobviswa mubonde mukati memaminitsi angangoita gumi, uye rinogona kuchekwa mushure memaminitsi makumi matanhatu.
7. Shandisa banga kucheka furo rakawandisa, wozora pamusoro nesimbi yesimbi, pendi kana silica gel.
8. Yera mushonga wekupa furo zvichienderana nezvinodiwa zvehunyanzvi, wedzera mvura yakachena ka80 kuti unyungudike kuti ugadzire furo; wobva washandisa muchina wekupa furo kuti upe furo mumvura yekupa furo, wobva wawedzera furo mu slurry ye simende ye magnesite yakasanganiswa zvakaenzana zvichienderana nehuwandu hwakatarwa. Kurunga zvakaenzana, wozopedzisira watumira furo ye magnesite kumuchina wekugadzira kana mold kuti iumbwe.
Zvinyorwa zvekuvaka:
Tembiricha yekushandiswa kwetangi repolyurethane foaming agent i +5～+40℃, Tembiricha yekushandiswa yakanyanya kunaka i +18～+25℃. Kana tembiricha yakaderera, zvinokurudzirwa kuisa chigadzirwa ichi patembiricha yakaenzana ye +25～+30℃ kwemaminitsi makumi matatu usati wachishandisa kuti uve nechokwadi chekuti chinoshanda zvakanaka. Huremu hwekudzivirira tembiricha yefuro rakacheneswa i -35℃～+80℃.
Foam inobvisa hunyoro inonzi polyurethane ifuro rinobvisa hunyoro. Inofanira kupfapfaidzwa pamusoro pemvura kana ikashandiswa. Kana hunyoro hwacho hwakakwira, ndipo painokurumidza kupfapfaidzwa. Foam isina kucheneswa inogona kucheneswa nechinhu chinochenesa, nepo furo rakacheneswa rinofanira kubviswa nekushandisa michina (kupwanya kana kucheka). Furo rakacheneswa richashanduka kuita yero mushure mekupiswa nechiedza che ultraviolet. Zvinokurudzirwa kuputira pamusoro pefuro rakacheneswa nezvimwe zvinhu (simende, pendi, nezvimwewo). Mushure mekushandisa spray gun, ndapota ichenesei nechinhu chinochenesa chakakosha nekukasika.
Pakutsiva tangi, zunza tangi idzva zvakanaka (uchizunza kanenge ka20), bvisa tangi risina chinhu, uye dzorera tangi idzva nekukurumidza kudzivirira kuti pombi yekubatanidza pfuti yekupfapfaidza isaome.
Vharuvhu yekudzora kuyerera kwemvura pamwe nechinhu chinobaya pfuti yekupfapfaidza zvinogona kudzora kukura kwekuyerera kwefuro. Kana jekiseni ramira, vhara vharuvhu yekuyerera kwemvura nekukurumidza nenzira yewachi.
Kudzivirira Kuchengetedzeka
Furo risina kucheneswa rinonamira paganda nezvipfeko. Usabata ganda rako nezvipfeko paunenge uchishandisa. Tangi rePolyurethane rine kumanikidzwa kwe5-6kg/cm2 (25℃), uye tembiricha haifanirwe kudarika 50℃ panguva yekuchengetera nekutakura kudzivirira kuputika kwetangi.
Matangi ePolyurethane anodzivirira furo anofanira kudzivirirwa kubva kuzuva rakananga uye vana vanorambidzwa zvachose. Bvisa matangi mushure mekushandisa, kunyanya matangi epolyurethane anoshandiswa zvishoma asina kushandiswa, haafanirwe kuraswa marara. Zvinorambidzwa kupisa kana kuboora matangi asina chinhu.
Chengeta kure nemoto wakavhurika uye usabata zvinhu zvinobvira moto kana zvinoputika.
Nzvimbo yekuvaka inofanira kunge iine mhepo inofefetera zvakanaka, uye vashandi vekuvaka vanofanira kupfeka magirovhosi ebasa, maovharosi nemagirazi panguva yekuvaka, uye havafaniri kusvuta.
Kana furo rikabata maziso, ndapota sukurudzai nemvura musati maenda kuchipatara kunorapwa; kana rikabata ganda, sukurudzai nemvura nesipo.
Maitiro ekufuridza furo
1. Nzira yePrepolymer
Nzira yekuisa furo muchimiro che pre-polymer ndeyekugadzira (zvinhu zvichena) uye (zvinhu zvitema) kuita pre-polymer, wobva wawedzera mvura, catalyst, surfactant, nezvimwe zvinowedzera mu pre-polymer, wosanganisa uchishandisa high-speed stir. Nyika, mushure mekuoma, inogona kurapwa patembiricha yakati.
2. Nzira ye semi-prepolymer
Maitiro ekugadzira furo nenzira ye semi-prepolymer ndeyekugadzira chikamu che polyether polyol (chinhu chichena) uye diisocyanate (chinhu chitema) kuita prepolymer, wozobatanidza chimwe chikamu che polyether kana polyester polyol ne diisocyanate, mvura, Catalysts, surfactants, zvimwe zvinowedzera, nezvimwewo zvinowedzerwa uye zvinosanganiswa nekukurunga nekukurumidza kuti zviite furo.
3. Maitiro ekubudisa furo ane nhanho imwe chete
Wedzera polyether kana polyester polyol (zvinhu zvichena) uye polyisocyanate (zvinhu zvitema), mvura, catalyst, surfactant, blowing agent, zvimwe zvinowedzera nezvimwe zvinhu zvisina kugadzirwa nedanho rimwe chete, wosanganisa uchishandisa high speed stir wobva waita furo.
Maitiro ekubvisa furo nedanho rimwe chete inzira inoshandiswa zvakanyanya. Kunewo nzira yekubvisa furo nemaoko, inova ndiyo nzira iri nyore. Mushure mekunge zvinhu zvese zvayerwa nemazvo, zvinoiswa mumudziyo, uye zvinhu izvi zvinosanganiswa zvakaenzana uye zvinopinzwa muchiumbwa kana munzvimbo inoda kuzadzwa nefuro. Cherechedza: Pakuyera, polyisocyanate (zvinhu zvitema) inofanira kuyerwa pakupedzisira.
Foromu repolyurethane rakasimba rinowanzo furwa nefuro patembiricha yemumba, uye maitiro ekuumba ari nyore. Zvichienderana nehuwandu hwemichina yekuvaka, rinogona kupatsanurwa kuita furo rinopfurwa nemaoko uye furo rinopfurwa nemagetsi. Zvichienderana nekumanikidzwa panguva yekupupura furo, rinogona kupatsanurwa kuita furo rinopfurwa nemhepo ine simba uye furo rinopfurwa nemhepo ine simba shoma. Zvichienderana nenzira yekuumba, rinogona kupatsanurwa kuita kupupura nekupfapfaidza furo.
Mutemo
Mushonga wePolyurethane wakanyorwa neBazi reKuvaka sechigadzirwa chaifanira kusimudzirwa uye kushandiswa munguva ye "Gumi nerimwe reMakore Mashanu".
Tarisiro yemusika
Kubva pakatanga kushambadzwa nekushandiswa kwezvinhu zvinosvika 2000 muChina, kudiwa kwemusika kwakawedzera nekukurumidza. Muna 2009, kushandiswa kwegore negore kwemusika wekuvaka wenyika kwakapfuura magaba emamiriyoni makumi masere. Nekuvandudzwa kwezvinodiwa zvemhando yepamusoro yezvivakwa uye kusimudzirwa kwezvivakwa zvinochengetedza simba, zvigadzirwa zvakadaro huwandu hweglutathione huchawedzera zvishoma nezvishoma mune ramangwana.
Munyika, kugadzira nekugadzira tekinoroji yemhando iyi yechigadzirwa zvanyatso shandiswa, zvinhu zvinofema zvisina fluorine zvisingaparadze ozone layer zvinowanzo shandiswa, uye zvigadzirwa zvine pre-foaming (1) zvakagadzirwa. Kunze kwekuti vamwe vagadziri vachiri kushandisa zvikamu zvevharuvhu zvinotengeswa kunze kwenyika, zvimwe zvinhu zvinotsigira zvakagadzirwa munyika.
Bhuku remirayiridzo
(1) Zvinonzi pre-foaming zvinoreva kuti 80% ye polyurethane foaming agent yakaputirwa furo mushure mekupfapfaidza, uye furo rinotevera rinenge riri diki kwazvo.
Izvi zvinoita kuti vashandi vakwanise kubata simba remaoko avo pavanenge vachishandisa pfuti ine furo, iri nyore uye iri nyore kushandisa uye isingarasi guruu. Mushure mekunge furo rapfapfaidzwa, guruu rinova gobvu zvishoma nezvishoma kupfuura parinopfurwa.
Nenzira iyi, zvinonetsa vashandi kunzwisisa simba rekudhonza chigubhu mumaoko avo, uye zviri nyore kutambisa guruu, kanenge chikamu chimwe muzvitatu chemarara. Pamusoro pezvo, guruu rakaiswa mushure mekuwedzerwa rinoreruka kudzvanya magonhi nemahwindo mushure mekuoma, senge guruu rinowanzo shandiswa mufekitori yemusika.
Nguva yekutumira: Chivabvu-25-2021