Mai kauri don fenti na latex dole ne ya kasance yana da kyakkyawan jituwa da mahaɗin polymer na emulsion, in ba haka ba fim ɗin rufewa zai sami ƙaramin adadin reticulate, kuma zai samar da haɗakar barbashi mara canzawa, wanda zai rage ɗanko kuma ya rage girman barbashi. Mai kauri zai canza cajin emulsion. Misali, mai kauri cationic zai yi tasiri mara canzawa akan emulsifier anionic don karya emulsion. Mafi kyawun mai kauri don fenti na latex dole ne ya sami halaye masu zuwa:
1. Ƙarancin allurai da kuma kyakkyawan ɗanko
2. Kyakkyawan kwanciyar hankali a ajiya, babu raguwar danko saboda aikin enzymes, kuma babu raguwar danko saboda canje-canje a yanayin zafi da ƙimar PH
3, riƙe ruwa mai kyau, babu wani abu da ke bayyana a fili na kumfa
4. Babu wata illa ga halayen fim kamar juriyar gogewa, sheƙi, ƙarfin ɓoyewa da juriyar ruwa
5. Babu sinadarin launin ruwan kasa
Fasahar kauri ta fenti mai latex muhimmin ma'auni ne don inganta ingancin latex da rage farashi. Hydroxyethyl cellulose wani abu ne mai kauri da ya dace, wanda ke da tasiri mai yawa akan kauri, daidaito da daidaitawar fenti mai latex.
A tsarin samar da fenti na latex,hydroxyethyl cellulose (HEC)Ana amfani da shi azaman mai wartsakewa, mai kauri da kuma wakili mai ɗaure launi don daidaita ɗanɗanon samfurin, rage haɗuwa, sanya fim ɗin fenti ya yi santsi da santsi, da kuma sa fenti na latex ya fi ɗorewa. Kyakkyawan rheology, yana iya jure ƙarfin yankewa mai yawa, kuma yana iya samar da kyakkyawan matakin daidaitawa, juriya ga karce da daidaiton launi. A lokaci guda, HEC yana da kyakkyawan aiki, kuma fenti na latex da aka kauri da HEC yana da pseudoplasticity, don haka hanyoyin gini kamar gogewa, birgima, cikawa, da fesawa suna da fa'idodin adana aiki, ba su da sauƙin tsaftacewa da sag, da ƙarancin fesawa. HEC yana da kyakkyawan ci gaban launi. Yana da kyakkyawan daidaito tare da yawancin masu launi da mahaɗa, yana ba da damar ƙirƙirar fenti na latex tare da kyakkyawan daidaiton launi da kwanciyar hankali. Amfanin da aka yi amfani da shi a cikin tsarin, shine ether mara ionic. Saboda haka, ana iya amfani da shi a cikin kewayon pH mai faɗi (2~12), kuma ana iya haɗa shi da abubuwan da ke cikin fenti na latex gabaɗaya kamar launuka masu amsawa, ƙari, gishiri mai narkewa ko electrolytes.
Babu wani mummunan tasiri ga fim ɗin rufewa. Saboda ruwan HEC yana da alamun tashin hankali a saman ruwa, ba shi da sauƙin kumfa yayin samarwa da gini, kuma yanayin ramukan aman wuta da ramukan filaye ba su da yawa.
Kyakkyawan kwanciyar hankali na ajiya. A cikin tsarin ajiya na dogon lokaci, ana iya kiyaye wargajewa da dakatar da launin, kuma babu matsalar launin shawagi da fure. Idan babu ƙaramin Layer na ruwa a saman fenti kuma zafin ajiyar yana canzawa sosai. Dankonsa har yanzu yana da daidaito.
HEC na iya ƙara ƙimar PVC (ƙarfin yawan fenti) har zuwa 50-60%. Bugu da ƙari, mai kauri fenti mai ruwa zai iya amfani da HEC.
A halin yanzu, masu kauri da ake amfani da su a fenti mai inganci na latex na cikin gida ana shigo da su ne daga ƙasashen waje, waɗanda suka haɗa da polyacrylates, homopolymer ko copolymer emulsion thickeners na acrylic acid da methacrylic acid.
Ana iya amfani da hydroxyethyl cellulose don
1. A matsayin mai wargazawa ko manne mai kariya
Gabaɗaya, ana amfani da HEC mai ɗanko daga 10 zuwa 30 mPaS. Ana iya amfani da HEC na har zuwa 300mPa·S tare da anionic ko cationic surfactants, kuma tasirin watsawa ya fi kyau. Adadin da aka ambata gabaɗaya shine 0.05% na nauyin monomer.
2, kamar mai kauri
Yi amfani da 15000mPa. Matsakaicin ma'aunin HEC mai ƙarfi da ke sama da s shine 0.5 zuwa 1% na jimlar nauyin murfin latex, kuma ƙimar PVC na iya kaiwa kusan 60%. A cikin fenti na latex, ana amfani da HEC na kimanin 20Pa, kuma halaye daban-daban na fenti na latex sune mafi kyau. Kudin amfani da HEC sama da 30O00Pa.s ya yi ƙasa. Duk da haka, daidaita da sauran halaye na fenti na latex ba su da kyau. Daga hangen nesa na buƙatun inganci da rage farashi, ya fi kyau a yi amfani da HEC matsakaici da babban ɗanko tare.
3. Hanyar haɗa fenti da latex
Ana iya ƙara HEC da aka yi wa magani a saman foda ko sinadari. Ana ƙara busasshen foda kai tsaye zuwa niƙa launin. Ya kamata pH na wurin ƙarawa ya zama 7 ko ƙasa da haka. Ana iya ƙara abubuwan alkaline kamar masu rarrabawa bayan an gamaHECan jika shi kuma an wargaza shi gaba ɗaya. Ya kamata a haɗa ruwan da aka yi da HEC a cikin ruwan kafin HEC ta sami isasshen lokaci don ta danshi kuma ta yi kauri zuwa yanayin da ba za a iya amfani da shi ba. Haka kuma ana iya shirya ruwan da aka yi da glycol ta hanyar amfani da sinadaran hadawa.
4. Maganin fenin latex
Bazuwar HEC mai narkewa cikin ruwa idan aka fallasa shi ga molds waɗanda suka keɓance musamman ga cellulose da abubuwan da suka samo asali. Ƙara abubuwan kiyayewa a fenti kawai bai isa ba, dole ne dukkan abubuwan da ke cikin fenti su kasance ba su da enzyme. Dole ne a kiyaye hanyoyin samar da fenti na latex da tsabta, kuma dole ne a riƙa tsaftace duk kayan aiki akai-akai da tururi 0.5% formalin ko 0.1% maganin mercury.
Lokacin Saƙo: Afrilu-25-2024