Tsananguro yeChigadzirwa
Polyurea imusanganiswa unoshandiswa zvakanyanya uyo wakashandiswa zvinobudirira mukudzivirira ngura pamusoro pematangi ekuchengetera zvinhu, kudzivirira mvura pazvivakwa zvekongiri zvakaita senzvimbo dzekupaka mota, matangi emvura, nematunnel, uye sezvisungo zvekubatanidza kana kuti zvinovhara majoini.
- Rondedzero refu yezvinhu zvinogona kunyorwa sezvinoshandiswa semachira asingapindi mvura. Kwemazana emakore akati wandei, sarudzo chete yaivepo yaive zvigadzirwa zvakagadzirwa neasphalt. Muzana remakore rechi20, zvimwe zvinhu zvakawanda zvakagadzirwa, kusanganisira epoxy nevinyl ester.
- Polyurea ndiyo tekinoroji yemazuva ano yekuputira. Chinhu ichi, chakagadzirwa indasitiri yemotokari kuma1980 ekupedzisira, ikozvino chinoshandiswa zvakanyanya muminda yakasiyana-siyana. Nekuda kwekupora kwayo nekukurumidza, kuramba ngura, uye kuramba kupfeka, yafambira mberi zvakanyanya mukugadzira kudzivirira mvura mumakore gumi apfuura.
- Pakagadzirwa polyurea, zvaitarisirwa kuti polyurea ichava nechinhu chisinganyanyi kubatwa nemvura. Nekutsiva mapoka ecarboxyl mu polyurethane nemapoka eamino, chigadzirwa chatinodaidza kuti polyurea chakawanikwa. Chigadzirwa ichi hachina kunyanya kubatwa nemvura kupfuura mamwe machira akagadzirwa ne polyurethane.
- Polyurea ine mhando mbiri dzakajairika. Aromatic polyurea inoshandiswa kakawanda. Kushanda kwemuviri kwechigadzirwa ichi kunogona kusiyana zvakanyanya, nokudaro iine mashandisirwo akasiyana-siyana. Kutaura zvazviri, dambudziko rega rekupenda uku kushaya simba kweUV. Rumwe rudzi i aliphatic polyurea. Nekushandisa nzira dzakasiyana dzemakemikari kuti ive neUV yakagadzikana zviri nani, mutongo wemutengo unobhadharwa. Mutengo we polyurea iyi unowanzo kuve wakapetwa kaviri pane aromatic polyurea.
Zvimiro zvechigadzirwa
Kupfeka kwePolyurea, semhando itsva yekupfeka kwepamusoro-soro, kune hunhu hwakawanda hunoshamisa.
- Inozvirumbidza nehunyanzvi hwayo hwemuviri, hwakadai sekudzivirira kupfeka zvakanaka, izvo zvinoita kuti chifukidziro chirambe chakasimba uye chinodzivirira kwenguva yakareba kunyangwe munzvimbo dzine kukweshana nekupfekwa kakawanda;
- Panguva imwe chete, ine simba guru rekudzivirira kukanganiswa, ichidzivirira zvinobudirira masimba ekukanganiswa ekunze uye ichidzivirira pamusoro pechinhu chakafukidzwa kubva mukukuvadzwa.
- Panyaya yehunhu hwemakemikari, machira epolyurea anodzivirira ngura zvakanyanya. Angave akatarisana nekuora kwemaacid, alkali, kana munzvimbo dzakaoma dzemakemikari dzakadai sehunyoro hwakawanda uye munyu wakawanda, anogona kuramba akasimba kwenguva yakareba uye haawanzoitiki nemakemikari anokonzera kukuvara kwejira.
- Uyezve, ine simba rakanaka rekudzivirira mamiriro ekunze, ichichengetedza kushanda kwayo kwakasimba mumamiriro ekunze akasiyana-siyana, akadai sekupisa kwakanyanya, kupisa kwakaderera, uye mwaranzi ye ultraviolet, isina kusangana nematambudziko akadai sehupfu, kuchinja ruvara, kana kusvuuka nekuda kwekuchinja kwemamiriro ekunze. Kukurumidza kupora kwepolyurea coatings kunokurumidza zvikuru, izvo zvinovandudza zvakanyanya kushanda kwekuvaka uye zvinoita kuti coatings ipedzwe uye ishandiswe mukati menguva pfupi.
- Uyezve, ine kubatana kwakanaka kune zvinhu zvakasiyana-siyana, ichikwanisa kunamatira zvakasimba pamusoro pesimbi, kongiri, huni, nezvimwewo, zvichiita kuti ive chigadziko chekudzivirira chakasimba uye chakasimba.
ZVAKANAKA ZVECHIGADZIRWA
- Chimwe chezvikonzero nei machira epolyurea akakurumidza kufarirwa ndechekuti anoratidzwa nehukuru hwakasiyana-siyana hwakanaka. Webhusaiti yePolyurea.com inotaura pachena kuti maererano nehunhu hwemuviri huripo, hapana imwe machira pasi rose inogona kuenzana nepolyurea. Nekugadzirisa fomura, zvigadzirwa zvepolyurea zvinogona kuva nehunhu hwakasiyana-siyana, kubva pakureba kwakanyanya kusvika pakusimba kwakanyanya kwekumanikidza, asi izvi zvine chekuita nefomura yezvinhu uye kushandiswa kwayo nemazvo. Polyurea inonamatira zvakanaka kune akasiyana ma substrates anosanganisira kongiri, simbi, nehuni, kunyangwe isina primer, uye inogona kushandiswa munzvimbo dzine tembiricha yakakura uye hunyoro hwakasiyana. Pamwe mukana unoshamisa wepolyurea ndewekukurumidza kwayo kupora. Kana yangoiswa, polyurea inogona kusvika pakukora kunodiwa mujasi rimwe chete, iro rinokurumidza kakawanda kupfuura kushandisa machira echinyakare, zvichibvumira muridzi kuti atangezve kushandisa nzvimbo yacho uye kuderedza kurasikirwa nekuda kwekusashanda.
- Ukobvu hwekushandiswa kamwe chete kwepolyurea coatings hunogona kubva pa0.5mm kusvika 12.7mm, uye nguva yekupora inobva ipapo kusvika pamaminitsi maviri, izvo zvinoita kuti ikwanise kushandiswa nekukurumidza.
- Sechipfeko chepurasitiki chakakora chinoporesa nekukurumidza, kana paine chinodiwa chekudzivirira mvura kwenguva refu uye isina musono, polyurea isarudzo yakanaka. Zvimwe zvinhu, zvakaita sekuda kuti chisatsvedzerere uye chisatsvedzerere pamusoro, zvinogonawo kuwanikwa nenzira dzakasiyana. Chipfeko ichi chinogona kupendwa uye chinogona kutoshandiswa munzvimbo dzinosangana nezvinodiwa nemvura yekunwa.
- Nekuda kwehunhu hwayo hwakasiyana-siyana hwekushanda, polyurea ine mashandisirwo akasiyana-siyana. Rutivi rwemukati rwematangi ekuchengetera, zvidimbu zvekudzivirira zvechipiri, uye dziviriro pamusoro pemabhiriji ndizvo zvinonyanya kushandiswa pamhando iyi yezvinhu. Kutaura zvazviri, mikana yekushandisa polyurea haina muganho.
- Matangi emiti yekuchenesa mvura yakasviba anowanzo tambura nemhepo inoputika, kukwesha, uye huwandu hwakawanda hwegasi rehydrogen sulfide panguva yekusefa, kusanganisa, uye kushaya mvura mumuviri. Kushandisa polyurea kunogona kupa simba rinodiwa rekudzivirira kupera, rekudzivirira makemikari, uye rekudzivirira kukuvadzwa, uye kunogona kukurumidza kudzorera fekitori kukushanda, izvo zvinokurumidza kupfuura dzimwe nzira dzakawanda.
- Kana ikashandiswa pamabhiriji nedzimwe nzvimbo dzinogona kudedera kana kusuduruka, kuchinjika kwepolyurea ndeimwe mukana pamusoro pemachira matete uye asingachinjiki akadai se epoxy.
Kushaikwa kweChigadzirwa
- Ehe, polyurea ine zvimwe zvayakaipira. Midziyo inodiwa pakushandisa polyurea coatings inodhura zvishoma, kubva pamadhora zviuru gumi nemashanu kusvika zviuru makumi mashanu kana kupfuura. Puratifomu yekuvaka inofambiswa yakakwana inogona kudhura kusvika pamadhora zviuru zana.
- Mutengo wezvinhu zvepolyurea wakakwirawo kupfuura wezvimwe zvipfeko. Mutengo wekutanga wakakwira kupfuura we epoxy. Zvisinei, sezvo hupenyu hwekushanda kwepolyurea coatings hwakapetwa katatu kusvika kashanu pane hwezvimwe zvigadzirwa, kushanda kwemutengo mukati menguva yebasa kuchiri nezvakanaka.
- Kufanana nezvimwe zvinhu zvinodzivirira mvura, kuvaka kusina kunaka kunogonawo kukonzera kutadza kushanda. Zvisinei, zvinodiwa pakuvaka nepolyurea coatings zvakanyanya. Kugadziriswa kwepamusoro kwakadai se sandblasting kana priming kwakakosha zvikuru kune polyurea. Mapurojekiti mazhinji e polyurea coatings akakundikana haana chekuita nepolyurea pachayo, asi anokonzerwa nekushandiswa kusina kunaka kana kusashanda zvakanaka kwepamusoro.
Kuvaka
- Mazhinji epolyurea anoshandiswa kudzivirira mvura anogadzirwa achishandisa michina yekupfapfaidza ine zvikamu zvakawanda. Kazhinji, sisitimu ine zvikamu zviviri inoshandiswa, musanganiswa weamino resin nezvinhu zveisocyanate zviri mumidziyo ye50-gallon. Panguva yekuvaka panzvimbo yebasa, zviri mukati memidziyo ye50-gallon zvinotamiswa kuenda kutangi remidziyo yekupfapfaidza uye zvinodziiswa kusvika patembiricha yakakodzera (60-71°C). Zvadaro, isocyanate nepolyol resin zvinotumirwa nepaipi inodziya kuenda kupfuti yekupfapfaidza.
- Chiyero chezvinhu zviviri izvi chinodzorwa zvakasimba, kazhinji pachiyero che1:1.
- Nguva yekupora kwepolyurea inoyerwa mumasekonzi, saka makemikari aya anogona kusanganiswa chete panguva chaiyo yaanobuda mupfuti yekupfapfaidza; zvikasadaro, anopora uye anooma mupfuti yekupfapfaidza.
- Vamwe vagadziri vanotengesa mayuniti ekupfapfaidza anofamba-famba, kusanganisira maturusi ese nemidziyo, ayo akaiswa pamatrailer kana pamibhedha yemarori.
Nguva yekutumira: Nyamavhuvhu-13-2025
