Codsiga Khadka Ilaalinta Deegaanka ee Ku-salaysan Biyaha ee Baakadaha Cuntada ee Sawirka leh

Codsiga Khadka Ilaalinta Deegaanka ee Biyo-ku-salaysan ee Baakadaha Cuntada

Sharaxaad Gaaban:

Nooca cusub ee baakadaha iyo alaabta daabacaadda, faa'iidada ugu weyn ee khad-biyoodka ku salaysan ayaa ah in aanay ku jirin dareerayaasha dabiiciga ah ee kacsan.Adeegsigeedu waxa uu yareeyaa xadiga iskudhisyada organic kacsan (VOCs), ma dhaawacayso caafimaadka soosaarayaasha khadka iyo hawl-wadeenada daabacaadda, waxaanay wanaajisaa tayada deegaanka.Sidaa darteed, waxaa loogu yeeri karaa khad deegaanka u wanaagsan.Sifooyinka ugu waaweyn ee khad biyaha ku salaysani waa wax wasakh ah oo deegaanka ah, wax saamayn ah kuma laha caafimaadka dadka, gubasho la'aan, iyo badbaado wanaagsan.Kaliya ma yarayn karto sunta hadhaaga ah ee dusha sare ee alaabada daabacan, waxay ka dhigaysaa mid ku habboon in la nadiifiyo qalabka daabacaadda, laakiin sidoo kale waxay yaraynaysaa khatarta dabka ee ay keento korantada taagan iyo dareerayaasha guban kara.Marka lagu daro ilaalinta deegaanka, sifooyinka daabacaadda ee khadadka biyaha ku salaysan ayaa sidoo kale wanaagsan.Khadka biyaha ku salaysan wuxuu leeyahay waxqabad xasiloon, ma dumin saxanka, hawlgalka fudud, qiimaha hooseeya, dhejinta wanaagsan ka dib daabacaadda, caabbinta biyaha xooggan iyo qallajinta degdega ah.Khadadka biyaha ku salaysan looma isticmaalo oo keliya daabacaadda flexographic iyo daabacaadda shaashadda oo leh awood horumarineed oo weyn.

Email noogu soo dir

Faahfaahinta Alaabta

Tags Product

Rajada Horumarka iyo Isbeddelka Khadka Biyaha Biyaha

Khadka biyaha ku salaysan waxa loo yaqaan khad biyaha ku salaysan oo kooban.Khadka biyaha ku salaysan ee flexographic waxa kale oo loo yaqaan khad dareere ah.Waxa inta badan laga sameeyaa xabagta biyaha ku milma, midabka organic, dareeraha iyo waxyaabaha la xidhiidha iyada oo la shiidi karo.Xabagta aqueous waa nooc cusub oo nidaamka resinka ah kaas oo isticmaala biyaha halkii uu ka isticmaali lahaa dareeraha organic sida dhexdhexaadinta kala firidhsan.Waxaa lagu qasaa biyo si xal loo helo.Ka dib markii biyuhu is bedbeddelaan, waxaa la sameeyaa maadada filimka resin.Biyo-ku-salaysan-ku-salaysan ma aha resin-ka-biyo-ku-salaysan laftiisa, balse waa walxo filim oo la helay ka dib is-bedbeddelka biyaha.Polyurethane-biyoodka, wakiil ahaan, ayaa si ballaaran loogu isticmaali karaa daboolka, dhejiska, dhejiska dharka iyo walxaha dhamaystirka, wakiilada dhamaystirka maqaarka, wakiilada daaweynta dusha waraaqaha iyo wakiilada daaweynta dusha fiber.Khadka biyaha ku salaysan wuxuu si gaar ah ugu habboon yahay cuntada, cabitaanka, daawada, tubaakada, khamriga, alaabta carruurtu ku ciyaarto iyo baakadaha iyo alaabada kale ee daabacaadda oo leh shuruudo nadaafadeed oo adag, beddelidda alaabooyinka dareeraha ah ee dhinacyada kala duwan.Sida mid ka mid ah shanta walxood ee daabacaadda, khad biyaha ku salaysan ayaa door muhiim ah ka ciyaara habka daabacaadda iyo tayada daabacaadda.Qoondaynta macquulka ah ee khadku waa isku xirka muhiimka ah si loo hubiyo tayada alaabta daabacan.Khadka biyaha ku salaysan ayaa qayb wayn ka qaatay daabacaadda flexographic sababtoo ah faa'iidooyinka ilaalinta deegaanka iyo dhaqaalaha.
Horumarinta xooggan ee warshadaha daabacaadda baakadaha cagaaran waxay si lama huraan ah u xoojin doontaa tartanka suuqa khad daabacaadda.Hadda kuwa soo saarayaasha khadku waxay soo direen calaamad muujinaysa in qiimaha alaabta ceeriin ee khadku aad kor ugu kacday, taas oo kordhin doonta kharashka wax soo saarka iyo habaynta ku habboonaanta.Tani waxay inta badan sabab u tahay yaraanta caalamiga ah ee taxane kiimiko ah, kuwaas oo ah alaabta ceeriin ee muhiimka ah ee soo saarista khad.Ilaa hadda, kor u kaca qiimaha saliidda cayriin iyo waxyaabaha laga soo saaro batroolka ayaa ah sababta ugu weyn ee kor u kaca qiimaha khadku.Si kastaba ha noqotee, xitaa haddii qiimaha saliidda uu hoos u dhaco, sababtoo ah warshadaha khadku waxaa ku dhacay yaraanta alaabta ceeriin ee kiimikada, gaar ahaan alaabta ceeriin sida nitrocellulose, acrylic acid, acetic acid iyo titanium dioxide, qiimaha khadku weli wuu kici doonaa.Waqtigan xaadirka ah, dalalka horumaray iyo gobollada waxay isku dayayaan inay horumariyaan oo isticmaalaan khad si ay si tartiib tartiib ah u beddelaan khad ku salaysan dareeraha.Baakadaha daabacaadda khad ku salaysan biyaha sida shayga ugu muhiimsan ee horumarinta ayaa sameeyay isbeddelka adduunka.

Astaamaha Dhismaha Khadka Biyaha Ku Salaysan: Farqiga u dhexeeya Wakiilada iyo Khadka Saliida ku Salaysan

Tayada poliurethane ee khad inta badan waxay isticmaashaa polyester aliphatic iyo aliphatic isocyanate oo ah alaabta ugu muhiimsan ee habka diyaarinta.Marka la barbardhigo polyurethane caraf udgoon, kii hore wuxuu leeyahay xasillooni indhaha oo aad u wanaagsan iyo filimka ka dib sameynta filimku wuxuu leeyahay iska caabin jaale ah oo wanaagsan.Waxaa jira kooxo polar ah sida carbamate, urethane, ester bond iyo ether bond ee qaybta silsiladda molecular polyurethane ee khad, kuwaas oo sameeya bonds hydrogen oo leh kooxaha polar ee dusha sare ee substrates kala duwan ee polar sida xayawaanka iyo PA, sidaas darteed samaynta wadajir ah xoogga isku xirka qaarkood.Ka dib markii suufka poliurethane ee la bedelay laga dhigo khad, waxaa lagu daabici karaa dusha sare ee balaastiig balaastiig ah oo leh xajin wanaagsan.Xabagta poliurethane ee khad guud ahaan waxaa laga soo diyaariyey polyester ama polyeter polyol, giraanta ester diisocyanate iyo fidiyaha silsiladda diamine.Sababo la xiriira soo gelinta curaarta urea ee xuubka poliurethane, xadhkaha urea polyurethane (PUU) ayaa la sameeyay, kaas oo leh qoyn wanaagsan iyo sifooyin kala firdhiya midabka midabka.
Xabagta poliurethane ee khadku waxay si fiican ula jaanqaadi kartaa aldehyde ketone resin, resin chloroacetic, iwm. si habboon ayaa loogu dari karaa habka habka iyadoo loo eegayo xaaladda dhabta ah si loo hagaajiyo waxqabadka dhammaystiran ee qalinka.Xabagta poliurethane ee khad ayaa lagu diyaariyaa iyada oo la soo bandhigayo kooxda urea ee qaybta molecular polyurethane ee dhaqameed, taas oo si weyn u wanaajisa xoogga isku xirnaanta iyo sameynta filimka sameynta hantida resinka laftiisa.Xabagta poliurethane ee dhaqameedku waxay leedahay kala duwanaansho ballaaran oo qallafsan oo leh dareerayaasha organic.Si kastaba ha ahaatee, in habka diyaarinta khad, si loo hagaajiyo dareeraha iyo viscosity ee khad, waxaa lagama maarmaan ah in lagu daro dareeraha organic khamriga, taas oo si weyn u yaraynaysaa xasiloonida nidaamka resin iyo keeni turbidity, roobab flocculent iyo ifafaale kale ee dhaqanka. suufka poliurethane.Qaybta silsiladda molecular ee resin polyurethane ee daabacaadda khad, sababtoo ah joogitaanka kooxda urea, xadhkaha poliurethane iyo khamriga waa la milmi karaa.Si kastaba ha ahaatee, waa in la ogaadaa in dareeraha khamriga uu weli yahay dareere been abuur ah.Xaaladda microscopic, dareeraha aalkolada ayaa kaliya koobaya molecule resin polyurethane, halkii ay ka geli lahaayeen polarity molecular ee molecule sida dareeraha dhabta ah, si khad lagu diyaariyo poliurethane uu leeyahay dheecaan wanaagsan.
Farqiga ugu weyn ee u dhexeeya khad-biyo-ku-salaysan iyo khad-saliid ku salaysan waa dareeraha.Khadka biyaha ku salaysan wuxuu isticmaalaa biyaha (45% - 50%) sida dareeraha, oo leh maaddada VOC oo aad u yar iyo wasakhowga deegaanka oo yar;Khadka saliidda leh wuxuu u isticmaalaa dareeraha organic (toluene, xylene, alkolada warshadaha, iwm.) sida dareeraha.Khadka biyaha ku salaysan ayaa isticmaala biyaha iyo dareeraha biyaha ku milma sida qaybaha ugu muhiimsan ee saldhigga midabka kala diri;Waxa kale oo jira khad dheeha iyo midabka midabka ah oo ku jira khad biyaha ku salaysan, iyo pH guud ahaan waa dhexdhexaad;Saliiddu waxa kale oo ay leedahay khad dheeh iyo midab, iyo pH guud ahaan waa acidic.Khadka biyaha ku salaysan iyo khad saliid ku salaysan laguma qasi karo isla madaxa daabacaadda.
Khadka biyaha ku salaysan, xabagta biyaha ku salaysan waa qayb muhiim ah oo ka mid ah khad biyaha ku salaysan.Walxaha isku xidha khadku waxay si toos ah u saameeyaan waxqabadka adhesion-ka, xawaaraha qalajinta, waxqabadka ka-hortagga wasakhda iyo caabbinta kulaylka ee khad, iyo sidoo kale waxay saameeyaan gloss iyo waxqabadka wareejinta khad.Sidaa darteed, xulashada qalabka ku habboon ee biyaha ku salaysan ayaa fure u ah diyaarinta khad biyaha ku salaysan.Waa inay lahaataa xiriir wanaagsan oo leh midabyo, xajin sare ka dib daabacaadda iyo sameynta filimka, xirto caabbinta, caabbinta xoqan, caabbinta kulaylka wanaagsan, iskutallaab sahlan iyo sameynta filimka.Beeyada biyaha sida caadiga ah loo isticmaalo waxaa ka mid ah xabagta poliurethane ee biyaha ka dhasha, xabagta akril, alkolada polyvinyl iyo resin epoxy.
Xabagta poliurethane-ka ee biyaha ka dhasha ayaa lagu kala firdhiyaa biyaha isaga oo soo bandhigaya kooxaha hydrophilic silsiladda molecular polyurethane.Biyo-baxa polyurethane-ku wuxuu leeyahay faa'iidooyinka isticmaalka fudud, waxqabadka xasilloon, dhejinta xooggan, dhalaalka sare iyo caabbinta kulaylka wanaagsan.Waxay ku habboonaan kartaa hababka daabacaadda ee kala duwan, gaar ahaan daabacaadda shaashadda, sanduuqyada baakadaha balaastiga ah iyo filimada isku dhafan.