Iindaba

Xa abantu abaninzi bethenga iibhodi ezigqunywe ngombala, abawazi umahluko phakathi kweebhodi ezigqunywe ngombala ofanelekileyo kunye neebhodi ezigqunywe ngombala ombi, kuba imiphezulu iyafana, kwaye akuyi kubakho ngxaki ukuba ayisetyenziswanga. ixesha lexesha. Kukho izinto ezininzi ekufuneka ziqwalaselwe xa ukhetha ukutyabeka, okubandakanya ubukhulu becala uhlobo lokwaleka, ubukhulu bokwambatha, umbala wokugquma kunye neglosi yokugquma. Ukongezelela, ngamanye amaxesha iimfuno ze-primer kunye ne-back back of the coating kufuneka ziqwalaselwe. Iindidi zokwaleka okwangoku ezisetyenziselwa iipleyiti zentsimbi ezigqunywe ngombala ziquka i-polyester (PE), i-fluorocarbon coating (PVDF), i-silicon modified coating (SMP), i-high weather resistance (HDP), i-acrylic coating, i-Polyurethane coating (PU), iplastisol. ukutyabeka (PVC), njl.

Ipolyester (PE, iPolyester)

Iingubo ze-PE zinokunamathela kakuhle kwizinto eziphathekayo. Iipleyiti zetsimbi ezifakwe ngombala zilula ukwenza kunye nokumila. Amaxabiso aphantsi kwaye aneemveliso ezininzi. Kukho ukhetho olubanzi lwemibala kunye neglosi. Iingubo ze-polyester azifanelekanga ukuchasana nokukhanya kwe-ultraviolet kunye nokumelana nomgubo wefilimu yokugubungela. Ke ngoko, ukusetyenziswa kweengubo ze-PE kusafuneka kuxhomekeke kwezinye izithintelo. Ngokuqhelekileyo isetyenziswa kwiindawo apho ungcoliseko lomoya lungekho nzulu okanye kwiimveliso ezifuna iinkqubo ezininzi zokubumba.

▲ Amashishini asebenzayo

Izityalo zoshishino eziqhelekileyo kunye neendawo zokugcina iimpahla kunye nezixhobo zempahla azibangeli ukubola kwiiplate zombala ngokwazo, kwaye azikho iimfuno eziphezulu zokumelana nokubola kunye nokuchasana nokuguga kwamacwecwe ombala. Kuqwalaselwe ngakumbi ukuba luncedo kunye nokusebenza kakuhle kweendleko zokwakha umzi-mveliso.

I-Silicone Modified Polyester (SMP, Silicone Mobified Polyester)

Ekubeni i-polyester iqulethe amaqela asebenzayo -OH / -COOH, kulula ukusabela kunye namanye ama-polymer compounds. Ukuze kuphuculwe ukumelana nokukhanya kwelanga kunye neepropathi zomgubo ze-PE, i-silicone resin enokugcina umbala obalaseleyo kunye nokumelana nobushushu isetyenziselwa ukusabela kwe-denaturation. , kunye ne-denaturation ratio ye-PE ingaba phakathi kwe-5% kunye ne-50%. I-SMP inika ukuqina okungcono kwamacwecwe ensimbi, kwaye ubomi bayo bokukhusela i-corrosion bunokuba bubude be-10-12 iminyaka. Ngokuqinisekileyo, ixabiso layo liphezulu kune-PE, kodwa ngenxa ye-silicone resin Ukunamathela kunye nokwakheka kwezinto eziphathekayo akufanelekile, ngoko ke iipleyiti zensimbi ezinombala we-SMP azifanelekanga kwiimeko ezifuna iinkqubo ezininzi zokwenza, kwaye kakhulu esetyenziselwa ukwakha uphahla kunye neendonga zangaphandle.

Ipolyester ephezulu enganyangekiyo kwimozulu (i-HDP, iPolyster ephezulu ehlala ixesha elide)

Ngokumalunga nokungaphumeleli kwe-PE kunye ne-SMP, i-HYDRO yaseBrithani (ngoku efunyenwe yi-BASF), i-BECKER yaseSweden kunye nabanye baphuhlise iingubo ze-polyester ze-HDP ezinokufikelela kwi-60-80% yokuchasana kwemozulu ye-PVDF ekuqaleni kwe-2000, kwaye ingcono kune-silicon eqhelekileyo eguqulwayo. Ukwaleka kwePolyester, ukumelana nemozulu yangaphandle kufikelela kwiminyaka eyi-15. I-resin ye-polyester echasene nemozulu ephezulu isebenzisa i-monomers equkethe isakhiwo se-cyclohexane ngexesha lokudibanisa ukufezekisa ukulingana phakathi kokuguquguquka, ukuchasana kwemozulu kunye neendleko ze-resin. Iipolyols ezingenavumba kunye ne-polybasic acids zisetyenziselwa ukunciphisa ukukhanya kwe-UV nge-resin. , ukufezekisa ukuchasana kwemozulu ephezulu yengubo.

I-Absorbers ye-UV kunye ne-amine ethintekileyo (HALS) yongezwa kwifomula yepeyinti yokuphucula ukuchasana kwemozulu yefilimu yepeyinti. Iingubo ze-coil ze-polyester ezinokumelana nemozulu ephezulu ziye zaqatshelwa yimarike phesheya, kwaye iingubo zibiza kakhulu.

▲ Amashishini asebenzayo

Izinyibilikisi zetsimbi ezingenayo i-ferrous (ithusi, i-zinc, i-aluminium, i-lead, njl.) kwi-metallurgy kunye namashishini amandla ombane yizona zinzima kakhulu kwinkonzo yobomi bamacwecwe ombala. Izityalo zentsimbi, izityalo zamandla, njl.

Iplastisol yePVC (PVC Plastisol)

I-resin ye-PVC inokuxhathisa okulungileyo kwamanzi kunye nokuxhathisa imichiza. Idla ngokupeyintwa ngomxholo oqinileyo ophezulu. Ubunzima bokugquma buphakathi kwe-100-300μm. Inokubonelela ngengubo yePVC egudileyo okanye unyango olulula lokuhombisa ukugquma. ; Ekubeni ifilimu yokugqoka i-PVC i-resin ye-thermoplastic kwaye inomlinganiselo ophezulu wefilimu, inokubonelela ngokhuseleko olufanelekileyo kwipleyiti yensimbi. Nangona kunjalo, i-PVC inokumelana nobushushu obubuthathaka. Yayisetyenziswa kakhulu eYurophu ngeentsuku zokuqala, kodwa ngenxa yeempawu zayo zokusingqongileyo, ngoku isetyenziswa kancinci nangaphantsi.

Fluorocarbon PVDF

Ngenxa yamandla ebhondi eyomeleleyo phakathi kweebhondi zekhemikhali zePVDF, i-coating inokumelana nokugqwesa okuhle kakhulu kunye nokugcina umbala. Phakathi kweengubo zentsimbi ezipeyintiweyo ezisetyenziswa kwishishini lokwakha, yeyona mveliso iphambili kwaye inobunzima obukhulu bemolekyuli. Inokwakheka kwebhondi ethe ngqo, ngoko ke ngaphezu kokuchasana kweekhemikhali, nayo ineempawu ezibalaseleyo zomatshini, ukuchasana kwe-UV kunye nokumelana nobushushu. Kwiimeko eziqhelekileyo, ubomi bayo bokukhusela ukubola bunokufikelela kwi-20-25 iminyaka. Kwiminyaka yakutshanje, ii-resin ezine-fluorine ezifakwe kwi-chlorotrifluoroethylene kunye ne-vinyl ester monomers ziye zaziwa e-China kwaye zisetyenziswa ngokubanzi ekwakheni iindonga zangaphandle kunye neepaneli zetsimbi. Ngenxa yokusetyenziswa kwe-hydrolyzable vinyl ester monomers kunye nomxholo we-fluorine, i-30% ingaphantsi kune-PVDF. Malunga ne-%, ngoko ke kukho umsantsa othile phakathi kokumelana nemozulu kunye ne-PVDF. Umxholo we-PVDF wengubo ye-fluorocarbon eveliswa yi-Baosteel ayikho ngaphantsi kwe-70% (enye i-acrylic resin).

▲ Amashishini asebenzayo

Iimveliso ezikwishishini lemichiza ziyaguquguquka kwaye ziqhele ukuvelisa izinto ezinokonakala ezifana neeasidi okanye iialkali. Xa evezwe emanzini, amathontsi ombethe anokwenza lula kwaye abambelele kumphezulu wepleyiti yombala, onakalise ipleyiti yombala kwaye mhlawumbi ayigrulise ngakumbi. kwi-zinc layer okanye nakwi-steel plate.

02Itheyibhile yokuthelekisa ukusebenza kweengubo ezahlukeneyo

Kukho izinto ezimbini ezibalulekileyo ekukhethweni kwee-primers. Enye kukuqwalasela ukunamathela kwe-primer, i-topcoat kunye ne-substrate, kwaye enye kukuba i-primer inika ubuninzi bokuchasana kwe-corrosion ye-coating. Ukusuka kulo mbono, i-epoxy resin lolona khetho lungcono. Ukuba ucinga ngokuguquguquka kunye nokuchasana kwe-UV, unokukhetha kwakhona i-polyurethane primer. Kwi-back back, ukhetho oluchanekileyo kukukhetha isakhiwo esine-two-layer ukuba i-plate yensimbi efakwe umbala isetyenziswe njengeplate enye, oko kukuthi, uluhlu olulodwa lwe-back primer kunye nolunye uluhlu lwe-back topcoat. Ipeyinti yesiseko ifana nepeyinti yangaphambili, kwaye isambatho esiphezulu sinombala okhanyayo (njengomhlophe) i-polyester. Ukuba ipleyiti yensimbi efakwe umbala isetyenziswe njengephaneli edibeneyo okanye isandwich, kwanele ukusebenzisa umaleko we-epoxy resin ngasemva ngokunamathela ngokugqwesileyo kunye nokuxhathisa ukubola.

03Ukhetho lweglosi yokugquma

❖Ukubengezela ayisosalathisi sokusebenza. Njengombala, luphawu nje. Enyanisweni, ipeyinti (i-coating) ilula kakhulu ukufikelela kwi-gloss ephezulu. Nangona kunjalo, umgangatho ophakamileyo wegloss uyamenyezela kwaye ukukhanya okuphezulu kokukhanya kwelanga emini kunokubangela ungcoliseko lokukhanya (abantu abaninzi abasebenzisi iindonga zekhethini zeglasi ngoku ngenxa yongcoliseko lokukhanya). Ukongezelela, i-high-gloss surface ine-coefficient encinci ye-friction kwaye kulula ukutshitshisa, enokubangela ukuba kube lula ubungozi bokhuseleko ngexesha lokwakhiwa kwephahla. ; Uphawu lokuqala lokuguga kwamacwecwe ensimbi afakwe umbala xa esetyenziswa ngaphandle kukulahlekelwa yigloss. Ukuba ukulungiswa kuyadingeka, kulula ukwahlula phakathi kwamacwecwe ensimbi endala kunye namatsha, okubangela ukubonakala kakubi; ukuba ipeyinti yangasemva i-high-gloss, i-halo iya kwenzeka ngokulula xa kukho ukukhanya ngaphakathi. Ukudinwa okubonakalayo kwabasebenzi. Ngoko ke, phantsi kweemeko eziqhelekileyo, iipleyiti zetsimbi ezifakwe umbala wokwakhiwa zisebenzisa i-gloss ephakathi kunye nezantsi (30-40 degrees).

04 Ukukhetha ubukhulu bokugquma

I-Microscopically, isambatho sisakhiwo se-porous. Amanzi kunye nemidiya ephazamisayo (i-chlorine ion, njl.) emoyeni iya kuhlasela kwiindawo ezibuthathaka zokugquma, ezibangela ukubola phantsi kwefilimu, kwaye emva koko i-coating iya kukhupha kwaye ikhuphe. Ukongeza, kunye nobukhulu obufanayo bokugquma, i-coating yesibini ixinene kuneyokuqala. Ngokweengxelo zangaphandle kunye neziphumo zovavanyo olufanelekileyo lwe-corrosion, i-coating yangaphambili ye-20 μm okanye ngaphezulu inokuthintela ngokufanelekileyo ukungeniswa kweendaba ezitshabalalisayo. Kuba iindlela zokunqanda ukubola zeprimer kunye ne topcoat zahlukile, ayikuphela nje ubungqingqwa befilimu bubonke ekufuneka buxelwe, kodwa neeprimers kufuneka zifuneke ngokwahlukeneyo (》 5μm) kunye netopcoat (》15μm). Ngaloo ndlela kuphela ukuxhatshazwa kwe-corrosion yeendawo ezahlukeneyo zeplate yensimbi efakwe umbala kuqinisekiswe ukuba ilungelelene.

Iimveliso zePVDF zifuna iingubo ezityebileyo. Ngenxa yokuba idinga ukubonelela ngesiqinisekiso sobomi obude benkonzo. Iimfuno zokugquma ngasemva zixhomekeke kwisicelo, kunye neepaneli zesandwich ezifuna kuphela i-primer eboshiweyo. Ipleyiti yentsimbi eyenziweyo nayo ifuna iileya ezimbini zokugquma ngenxa yemeko egqubayo yangaphakathi. Ubunzima buyi-10μm ubuncinane.

Ukukhetha umbala wokugquma (ugxininiso longeziwe!)

Ukhetho lombala lusekelwe ikakhulu ekufaniseni indawo engqongileyo kunye nezinto ezithandwayo zomnini. Nangona kunjalo, ukusuka kumbono wezobugcisa, iipeyinti ezinombala okhanyayo zinokhetho olukhulu lwee-pigments. Iipeyinti ezingaphiliyo ezinokuqina okuphezulu zingakhethwa (ezifana ne-titanium dioxide, njl. njl.), kunye nepeyinti Ubuchule bokubonakalisa ubushushu bunamandla (i-reflection coefficient iphindwe kabini kunepeyinti emnyama). Ukushisa kwengubo ngokwayo kuphantsi kakhulu ehlotyeni, okunenzuzo ekwandiseni ubomi bokugquma. Ukongezelela, nangona ukutshintshwa kwengubo yokutshintsha umbala okanye iipowders, umehluko phakathi kombala okhanyayo kunye nombala wokuqala uya kuba mncinci, kwaye impembelelo kwimbonakalo ayiyi kubaluleka. Imibala emnyama (ingakumbi imibala eqaqambileyo) ubukhulu becala yimibala ephilayo, ekulula ukuyicima xa ibekwe kwimitha ye-ultraviolet, kwaye inokutshintsha umbala kwisithuba nje seenyanga ezi-3. Ngokweenkcukacha zovavanyo ezifanelekileyo, xa iqondo lobushushu langaphandle liphezulu emini emaqanda ehlotyeni, umphezulu omhlophe upholile nge-10 degrees kunomhlaba oluhlaza kunye ne-19 degrees epholileyo kunomphezulu omnyama. Imibala eyahlukeneyo inobuchule obahlukeneyo bokubonisa ukukhanya kwelanga.

05 isiphumo sokubonisa umbala

Kwiipleyiti zetsimbi ezifakwe umbala, ngokuqhelekileyo amazinga okwandisa i-thermal yokwaleka kunye nentsimbi yentsimbi iyahluka, ngokukodwa i-coefficients yokwandiswa kwe-linear ye-substrate yensimbi kunye ne-organic coating yahluke kakhulu. Xa ubushushu be-ambient buguquka, i-interface yokudibanisa phakathi kwe-substrate kunye ne-coating iya kutshintsha. Ukwandiswa okanye ukunyanzeliswa koxinzelelo lwenzeka, kwaye ukuba alukhululekanga ngokufanelekileyo, ukuqhekeka kweengubo kuya kwenzeka. I-Baosteel yenze uvavanyo lweminyaka esi-8 yokuvezwa eHainan yohlobo olufanayo lwepeyinti, umthengisi wepeyinti ofanayo, kunye nemibala eyahlukeneyo. Iziphumo zikwaqinisekise ukuba iipeyinti ezinombala okhanyayo azinabala kangako.

06 umehluko wombala weglosi ubukhulu boqobo ngoku ubukhulu

Ukongeza, apha singathanda ukucacisa ukungaqondi kakuhle ezimbini malunga nokukhetha kwimarike yasekhaya yangoku:

Okokuqala, ngoku kukho inani elikhulu lee-primers ezimhlophe e-China. Injongo yokusebenzisa i-primer emhlophe kukunciphisa ubukhulu be-topcoat, kuba i-primer ye-corrosion-resistant yokwakhiwa i-yellow-green (kungoko i-strontium chromate pigment), kwaye kufuneka kubekho ukutyeba okwaneleyo kwe-topcoat ukuze ube namandla amahle okufihla. Oku kuyingozi kakhulu kwi-corrosion resistance. Okokuqala, i-primer ine-corrosion resistance resistance, kwaye okwesibini, i-topcoat iyancipha kakhulu, ingaphantsi kwe-10 microns. Iiplati zetsimbi ezinombala onjalo zibukeka ziqaqambile, kodwa ziya kugqwala kwiindawo ezahlukeneyo (ukusikwa, ukugoba, phantsi kwefilimu, njl. njl.) ngaphantsi kweminyaka emibini.

Okwesibini ziipleyiti zentsimbi eziqatywe ngombala ezisetyenziswa kumsebenzi wokwakha. Iprojekthi efanayo isebenzisa iipleyiti zetsimbi ezinombala ezivela kubakhiqizi abahlukeneyo kunye neebhetshi ezahlukeneyo. Imibala ibonakala ihambelana ngexesha lokwakhiwa, kodwa emva kweminyaka emininzi yokukhanya kwelanga, imibala yeengubo ezahlukeneyo kunye nabavelisi bayatshintsha. Mininzi kakhulu imizekelo yeentsingiselo ezahlukeneyo ezikhokelela kumahluko amakhulu wemibala. Nokuba iimveliso zivela kumboneleli ofanayo, kucetyiswa ngamandla ukuba ubeke iodolo yeprojekthi enye kwangoko, kuba amanani eebhetshi ahlukeneyo angasebenzisa iimveliso ezivela kubaboneleli abahlukeneyo bokwambathisa, okonyusa amathuba okuba umehluko wombala.

Ukukhethwa kwezinto ezifanelekileyo akunakukwandisa kuphela ubomi benkonzo yesakhiwo, kodwa nokunciphisa iindleko, ngaloo ndlela kube nobungane bokusingqongileyo kunye nokugcina izixhobo.

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Taishan Industrial Development Group Co., Ltd.
Siya kuhlala sibambelela kwinkonzo yomgangatho wokuqala kunye nomthengi kuqala, sinikeze abathengi ngezona mveliso zibalaseleyo, kwaye senze konke okusemandleni ethu ukonga iindleko kubathengi. Ngokuxhomekeke kwindawo yokusetyenziswa kwezinto kunye neendleko zokuyilwa kwezakhiwo, sincoma ukusetyenziswa kombala we-Taishan Inc ongabizi kakhulu, i-Maanshan Iron kunye ne-Steel color coating kunye nombala we-Shougang. Iimveliso ze-PE eziqhelekileyo zinokusetyenziswa ubuncinane iminyaka eyi-10, kwaye iimveliso ze-PVDF zingahlala iminyaka engama-20 ukuya kuma-25. Intle kwaye yomelele, yenza umzi-mveliso wakho ube mhle ngakumbi. Inkampani yethu ibonelela ngemveliso, ukusetyenzwa, kunye neenkonzo zokuthengisa, ibonelela abathengi kuyo yonke inkqubo ukusuka kumbuzo wabathengi ukuya kwisicelo samva.