Labarai

Jirgin da aka lullube launi shine kayan gini na kore da muhalli.Yadda za a zaɓe shi daidai, amfani da shi da kyau, da inganta rayuwar sabis shine batun da ya fi damuwa ga masu shi da masu ginin injiniya.Baosteel, a matsayin cikakken tsari na shuka karfe, yana da kwarewa mai yawa a cikin samarwa da amfani da faranti mai launi.Tsarin "Zaɓin Kayan Kimiyya" yana ba da taƙaitaccen shawarwari da gabatarwa ga masu amfani akan zaɓi da amfani da faranti masu launi.
Zaɓin daidaitaccen nau'in nau'in launi mai launi ya kamata yayi la'akari da yanayin yanayi, yanayin amfani, rayuwar ƙira, da halayen tsarin ginin, don zaɓar nau'in karfe, ƙayyadaddun ƙayyadaddun, sutura, da suturar da suka dace da shi.Masu gine-gine, masu injiniya, da masu sarrafawa suna la'akari da aikin aminci (juriya mai tasiri, juriya na girgizar kasa, juriya na wuta, juriya na iska, juriya na dusar ƙanƙara), aikin zama (mai hana ruwa, rufin sauti, rufi), dorewa (juriya gurɓata, dorewa, riƙewar bayyanar) , da tattalin arziki (ƙananan farashi, sauƙin sarrafawa, sauƙi mai sauƙi, da sauƙin sauyawa) na gine-gine.Ga masu samar da faranti na ƙarfe mai launi, waɗannan kaddarorin yakamata a canza su zuwa kaddarorin farantin karfe mai launi ta injinan ƙarfe da garanti.Abubuwan da ake buƙata na faranti mai rufi na launi galibi sun haɗa da kaddarorin injiniyoyi na kayan (ƙarfin ƙarfi, ƙarfin yawan amfanin ƙasa, elongation), aikin shafi (nau'in sutura, kauri mai kauri, da mannewa shafi), da aikin shafi (nau'in sutura, launi, mai sheki). , karko, aiwatarwa, da dai sauransu).Daga cikin su, juriya na iska, juriya mai tasiri, juriya na dusar ƙanƙara, juriya na girgizar ƙasa, da dai sauransu duk suna da alaƙa da kaddarorin injiniyoyi na kayan, kuma ba shakka, suna da alaƙa da siginar igiyar ruwa, kauri, tazara, da tazara na faranti na ƙarfe masu launi. .Idan an zaɓi faranti mai launi masu launi masu dacewa kuma an haɗa su tare da ƙirar ƙirar ƙarfe mai dacewa, ba zai iya saduwa da yanayin aminci na gine-gine ba amma kuma ya rage farashin injiniya.Ƙarfafawa, aikin sarrafawa, da kuma bayyanar da kayan aiki an ƙaddara su ne ta hanyar ƙarfin sutura da sutura.

Rufi iri-iri

A halin yanzu, nau'ikan nau'ikan nau'ikan da aka yi amfani da su don faranti na ƙarfe mai launi sun haɗa da murfin polyester (PE), murfin fluorocarbon (PVDF), murfin silicon da aka canza (SMP), murfin juriya mai ƙarfi (HDP), murfin acrylic acid, murfin polyurethane (PU) , Filastik sol shafi (PVC), da dai sauransu.

Polyester na al'ada (PE, Polyester)
Rufin PE yana da mannewa mai kyau ga kayan aiki, kuma farantin karfe mai launi mai launi yana da sauƙin sarrafawa da tsari, farashi mai tsada, kuma yana da samfuran samfuran da yawa.Akwai zaɓuɓɓuka masu yawa don launi da sheki.Karkashin bayyanar kai tsaye ga mahalli na gabaɗaya, rayuwarsa ta anti-lalata na iya kaiwa shekaru 7-8.Koyaya, a cikin mahallin masana'antu ko wuraren da aka gurbata sosai, rayuwar sabis ɗin za ta ragu sosai.Duk da haka, suturar polyester ba su dace da juriya na UV da juriya na fim ba.Sabili da haka, amfani da suturar PE har yanzu yana buƙatar iyakancewa, kuma ana amfani da su gabaɗaya a wuraren da ke da ƙarancin gurɓataccen iska ko samfuran da ke buƙatar gyare-gyare da sarrafawa da yawa.

Silicone Modified Polyester (SMP)
Saboda kasancewar ƙungiyoyi masu amsawa - OH/- COOH a cikin polyester, yana da sauƙi don amsawa tare da sauran polymers da abubuwa.Don inganta juriya na hasken rana da juriya na PE, ana amfani da resin silicone tare da kyakkyawar riƙewar launi da juriya mai zafi don amsawar denaturation.Matsakaicin denaturation tare da PE na iya zama tsakanin 5% da 50%.SMP yana ba da mafi kyawun karko don faranti na ƙarfe, tare da rayuwar juriya na lalata har zuwa shekaru 10-12.Tabbas, farashinsa kuma ya fi na PE, Duk da haka, saboda rashin gamsuwa da mannewa da sarrafa tsari na guduro Silicone ga kayan, faranti mai rufi na SMP launi ba su dace da yanayin da ke buƙatar matakan gyare-gyaren da yawa ba, kuma galibi ana amfani dasu don rufin gini da bangon waje.

Babban polyester mai jure yanayin yanayi (HDP, Polyester mai ɗorewa)
Dangane da gazawar PE da SMP, kamfanin Burtaniya HYDRA (wanda yanzu ya samu ta BASF) da kamfanin Sweden na BECKER sun haɓaka suturar polyester HDP a farkon 2000 wanda zai iya kaiwa 60-80% jure yanayin yanayin PVDF. .Juriyar yanayin su na waje ya kai shekaru 15.An haɗa resin polyester mai tsayin yanayi ta amfani da monomers wanda ke ɗauke da tsarin cyclohexane don cimma daidaito tsakanin sassauci, juriya na yanayi, da farashi.Ana amfani da polyols da acid kyauta na aromatic don rage ɗaukar hasken UV ta guduro, cimma babban juriya na rufin.Bugu da kari na ultraviolet absorbers da steric hindrance amines (HALS) a cikin dabarar shafi inganta yanayin juriya na fenti.Kasuwa a ƙasashen waje sun san abin da ke jure yanayin yanayin polyester coil, kuma ingancin sa yana da fice sosai.
PVC Plastisol
PVC guduro yana da kyau ruwa juriya da kuma sinadaran juriya, kuma kullum mai rufi da high m abun ciki, tare da shafi kauri na 100-300 μ Tsakanin m, zai iya samar da m PVC shafi ko haske embossing magani kamar embossing shafi;Saboda gaskiyar cewa murfin PVC shine resin thermoplastic tare da babban kauri na fim, zai iya ba da kariya mai kyau ga faranti na karfe.Amma PVC yana da raunin juriya na zafi.A zamanin farko, ana amfani da shi sosai a Turai, amma saboda ƙarancin yanayin muhallinsa, a halin yanzu ana ƙara yin amfani da shi.

PVDF fluorocarbon
Saboda ƙarfin haɗin gwiwa mai ƙarfi tsakanin haɗin sinadarai na PVDF, rufin yana da kyakkyawan juriya na lalata da riƙe launi.Shi ne mafi ci gaba da samfur a cikin ginin masana'anta launi mai rufi farantin karfe, tare da babban kwayoyin nauyi da madaidaiciyar tsarin bond.Sabili da haka, ban da juriya na sinadarai, kaddarorin injina, juriya na UV, da juriya na zafi kuma suna da mahimmanci

Don zaɓin na farko, akwai abubuwa biyu mafi mahimmanci.Ɗaya shine la'akari da mannewa tsakanin farar fata da topcoat, da kuma substrate.Sauran shi ne cewa na farko yana samar da mafi yawan juriya na lalata na rufi.Daga wannan hangen nesa, resin epoxy shine mafi kyawun zaɓi.Idan aka yi la'akari da sassauci da juriya na UV, ana iya zaɓar firam na polyurethane.
Don murfin baya, zaɓin da ya fi dacewa shi ne zaɓi tsarin Layer guda biyu, wato Layer na farko na baya da kuma Layer na topcoat na baya, idan farantin karfe mai launi yana cikin yanayin allo guda.Fure-fure da na gaba iri ɗaya ne, kuma saman ya kamata ya zama launin haske (kamar farin) polyester.Idan farantin karfe mai launin launi yana cikin yanayin hadawa ko sanwici, ya isa a yi amfani da wani Layer na resin epoxy tare da kyakkyawan mannewa da juriya na lalata a baya.
A halin yanzu, akwai da yawa aikin launi mai rufi faranti karfe faranti, irin su antibacterial launi shafi, anti-a tsaye launi shafi, thermal rufi launi shafi, kai-tsaftacewa launi shafi, da dai sauransu Ci gaban wadannan kayayyakin ne da nufin saduwa da musamman bukatun. masu amfani, amma wani lokacin ba zai yiwu a daidaita sauran ayyukan samfuran masu launi ba.Don haka, lokacin da masu amfani suka zaɓi faranti na ƙarfe mai launi na aiki, dole ne su bayyana sarai game da ainihin bukatunsu.