Za a iya shirya suturar ruwa (VOC & HAPs) kyauta daga ruwa aliphatic epoxy da kunkuntar polymerized capropone polyols kuma za'a iya amfani dashi tare da kayan aiki na al'ada kuma yana da damar maye gurbin foda. aliphatic epoxy liquid coatings?Kwararren masana'antun masana'antar epoxy resin masana'antu sun gabatar da gabatarwa ta musamman kwanaki da suka gabata.
Za a iya kauce wa saka hannun jari na kayan aiki na asali don sabon layin launi na foda ta amfani da kayan aikin feshin ruwa na gargajiya.Ana iya gyare-gyaren waɗannan suturar ta hanyar tsoma su da ruwa ko kuma ta hanyar yin kauri na tushen ruwa tare da kauri na cellulose.Tare da diglycidyl ether na bisphenol A (bpa) resin na al'ada, alicyclic epoxy yana da abubuwa masu zuwa: bambanci tsakanin A a matsayin babban sarkar. aliphatic, dauki tare da acid da sauri, amma tare da amine / amides epoxy curing agents da aka saba amfani da su ba su amsa ba, ba su ƙunshi chlorine, danko na 350 centipoise da diglycidyl ether na bisphenol A (bpa) resin kamar 11000 centipoise, a lokaci guda. Har ila yau, yana da kyakkyawan juriya na yanayi. Aikace-aikacen ƙananan danko aliphatic epoxy a cikin cationic UV coatings an ƙara muhimmanci.Akwai rahotanni da yawa game da shirye-shiryen da kaddarorin irin wannan nau'in 100% m coatings ba tare da "VA", amma akwai 'yan cikakken wallafe-wallafe a kan ta aikace-aikace a thermal curing coatings.In ka'ida, cationic UV shafi dabara fasaha sani-yadda iya kuma za a yi amfani da thermal curing tsarin, amma biyu kuma suna da daban-daban kamar UV shafi ne kullum ba spraying yi, don haka gina danko ne mafi girma fiye da spraying thermal curing shafi, a cikin yin burodi irin cationic shafi ruwa za a iya amfani da matsayin VOC diluent.
An yi amfani da polyols na Cepolactone azaman ingantattun diluents don suturar tushen ƙarfi kuma suna iya hanzarta warkar da suturar UV na cationic.Ƙungiyoyin hydroxyl na waɗannan polyols a cikin cationic UV coatings ba za su iya kawai hanzarta curing ba, amma kuma suna haifar da wani nau'i mai mahimmanci ga zafi. na polyols ƙara haƙuri da ruwa, don haka da cewa ruwa za a iya amfani da matsayin VOC-free thinner a Paint formulations hada da aliphatic epoxies da polyols, wanda a zahiri high m Organic coatings diluted da water.Water dilution yana da biyu abũbuwan amfãni: low danko a rashin VOC, da kuma amfani da na kowa da sanannun matakan fenti na ruwa don hana ratayewa da kuma kula da rheological. Tun da kowane bangare a cikin tsari ba shi da wani ɓangare kawai tare da ruwa, yawan ruwan da za a iya sha yana iyakance.Ya kamata a kula don guje wa ƙara yawan ruwa don haifar da rabuwar lokaci.
Cellulosic thickeners ne tasiri a cikin ruwa na tushen coatings, amma ba a bayyana ko suna da tasiri a cikin 100% m, ruwa-diluted aliphatic epoxy coatings. Aikin farko ya nuna cewa ruwa-diluted 100% m epoxides sun kasance thixotropic lokacin da aka auna tare da Brookfield viscometer. .Bincike na daban-daban thickeners ya nuna cewa cellulose thickeners suna da mafi kyau m Properties.Lokacin da mai tsanani zuwa 40 ~ 60 ℃, mafi kyau bayyanar da fim za a iya samu ta yin amfani da fesa gun.The low yi zafin jiki sa da warke film samar da karin orange peel.China epoxy guduro masana'antu kungiyar masana sun ce babban amfani da foda shafi ne mai rufi da high yadda ya dace, high yadda ya dace shi ne yafi ta hanyar dawo da foda don cimma, to foda shafi daidai da. Irin wannan rufin ruwa yana buƙatar wata hanya don dawo da fenti na tashi.Tun da tsarin fenti da aka kwatanta a nan ya ƙunshi wani nau'i na kwayoyin halitta don sauƙi mai sauƙi, ruwan da aka rasa a cikin tsarin farfadowa za a iya daidaita shi cikin sauƙi ta hanyar auna ƙarfin lantarki lokacin da ya cancanta, ceton makamashi ta hanyar. buƙatar ƙananan yanayin yin burodi idan aka kwatanta da yanayin zafi mafi girma na yin burodi da ake bukata don gyaran foda. Wani zaɓin da ake kimantawa shine don fesa epoxies, polyols, da pigments tare da hanyar "Unicarb", wanda ya fi dacewa fiye da foda shafi.Idan ba a buƙatar shafi na kyauta na VOC, kawai ƙara kaushi a cikin dabara.
Game da dabara bayanin kula, kasar Sin epoxy guduro masana'antu masana masana sun ce, domin cationic curing saboda alkali zai daina curing, don haka duk Additives da rheological kula jamiái dole ba dauke da alkaline, alkaline pigments da amines bi pigments zai hana curing.Alkalescent idan damine pigments zai. Har ila yau, hana cationic curing, alkaline pigments da additives a cikin cationic curing coatings ba za a iya amfani da, curing ya dogara da mai kara kuzari FC-520 a cikin wani karamin adadin amine sealant volatilization, idan fim din yana da yawa ko kuma tanda ba ta da iska, amine ba za a iya gaba daya cire daga fim da kuma hana curing.Viscosity ya karu tare da karuwa da polyols branched digiri karuwa: dibasic barasa fiye da uku ko hudu yuan samun kudin shiga ƙananan danko na Paint, barasa da glycol raba bukatar ƙara yawan adadin epoxy darajar ( R) za a iya samu ta wuya shafi, high sashi na epoxy lalata za a iya inganta, da karuwa mai kara kuzari sashi na iya hanzarta curing gudun amma kuma iya rage lalata, da molar rabo na epoxy da hydroxyl R yana da gagarumin tasiri a kan curing gudun. .
Ko ta yaya, alicyclic epoxy da caprolactone polyols ne low danko kuma ko da wani VOC shafi, da shafi za a iya diluted da ruwa zuwa fesa danko, cellulose thickener iya ba da ruwa tsarma na 100% m epoxy da polyols shafi yadda ya kamata hana sagging, tsarin na curing gudun. An yanke shawarar da waɗannan masu canji: molar rabo na epoxy da hydroxyl, multivariate barasa da kuma aikin epoxy, da sashi na mai kara kuzari da kuma curing zafin jiki, da dabara za a iya sauƙi amfani a cikin shirye-shiryen na Paint, saboda irin wannan shafi na cationic. curing asali fenti da substrate na iya hana curing.
Lokacin aikawa: Afrilu-06-2021