A yau za mu mayar da hankali kan yadda za a ƙara takamaiman nau'in thickeners.
Nau'in kauri da aka saba amfani da su sune inorganic, cellulose, acrylic, da polyurethane.
Inorganic
Inorganic kayan ne yafi bentonite, fumed silicon, da dai sauransu, wanda aka kullum kara wa slurry ga nika, domin yana da wuya a tarwatsa su gaba daya saboda na al'ada fenti hadawa ƙarfi.
Akwai kuma wani ɗan ƙaramin sashi wanda za a riga an tarwatsa kuma a shirya shi cikin gel don amfani.
Ana iya ƙara su zuwa fenti ta hanyar niƙa don yin wani adadin pre-gel. Hakanan akwai wasu waɗanda suke da sauƙin tarwatsewa kuma ana iya sanya su su zama gel ta hanyar motsawa mai sauri. A lokacin shirye-shiryen shirye-shiryen, yin amfani da ruwan dumi zai iya inganta wannan tsari.
Cellulose
Mafi yawan amfani da samfurin cellulosic shinehydroxyethyl cellulose (HEC). Rashin ƙarancin ruwa da daidaitawa, ƙarancin juriya na ruwa, anti-mold da sauran kaddarorin, ana amfani da shi da wuya a cikin fenti na masana'antu.
Idan aka yi amfani da shi, ana iya ƙara shi kai tsaye ko a narkar da shi a cikin ruwa a gaba.
Kafin ƙarawa, ya kamata a ba da hankali ga daidaita pH na tsarin zuwa yanayin alkaline, wanda ya dace da saurin ci gaba.
Acrylic
Acrylic thickeners suna da wasu aikace-aikace a masana'antu Paint. An fi amfani da shi a cikin ingantattun sutura na al'ada irin su sashi guda ɗaya da babban rabo-zuwa-tushe, kamar sifofin ƙarfe da abubuwan kariya.
A cikin sutura (musamman maɗaɗɗen rigar saman), sassa biyu, fenti mai yin burodi, fenti mai haske da sauran tsarin, yana da wasu lahani kuma ba zai iya zama cikakke ba.
The thickening ka'idar na acrylic thickener ne: da carboxyl kungiyar a kan polymer sarkar da aka tuba zuwa wani ionized carboxylate karkashin alkaline yanayi, da thickening sakamako ana samun ta hanyar electrostatic repulsion.
Sabili da haka, ya kamata a daidaita pH na tsarin zuwa alkaline kafin amfani da shi, kuma ya kamata a kiyaye pH a> 7 a lokacin ajiya na gaba.
Ana iya ƙara shi kai tsaye ko a diluted da ruwa.
Ana iya narkar da shi don amfani a wasu tsarin da ke buƙatar kwanciyar hankali mai girma. Wato: da farko a tsoma acrylic thickener da ruwa, sa'an nan kuma ƙara pH adapter yayin motsawa. A wannan lokacin, maganin yana yin kauri a fili, daga farar madara zuwa manna na gaskiya, kuma ana iya barin shi don tsayawa don amfani daga baya.
Yin amfani da wannan hanyar yana sadaukar da ƙimar girma, amma yana iya haɓaka haɓaka mai girma a farkon matakin, wanda zai dace da kwanciyar hankali na danko bayan an yi fenti.
A cikin tsari da kuma samar da tsari na H1260 mai tushen ruwa guda ɗaya na foda foda foda, ana amfani da thickener ta wannan hanya.
Polyurethane
Ana amfani da kauri na polyurethane a cikin masana'antar masana'antu tare da kyakkyawan aiki kuma suna dacewa da amfani a cikin tsarin daban-daban.
A cikin aikace-aikacen, babu wani buƙatu akan pH na tsarin, ana iya ƙara shi kai tsaye ko bayan dilution, ko dai tare da ruwa ko sauran ƙarfi. Wasu masu kauri ba su da ƙarancin ruwa kuma ba za a iya shafe su da ruwa ba, amma za a iya shafe su da kaushi kawai.
emulsion tsarin
Tsarin emulsion (ciki har da emulsion na acrylic da emulsion hydroxypropyl) ba su ƙunshi kaushi ba kuma suna da sauƙin kauri. Zai fi kyau a ƙara su bayan dilution. Lokacin diluting, bisa ga kauri yadda ya dace na thickener, tsarma wani rabo.
Idan kauri yadda ya dace ya yi ƙasa, da dilution rabo ya zama ƙasa ko ba diluted; idan thickening yadda ya dace ne high, dilution rabo ya kamata ya zama mafi girma.
Alal misali, SV-1540 na tushen ruwa na polyurethane associative thickener yana da babban kauri yadda ya dace. Lokacin amfani da emulsion tsarin, shi ne kullum diluted sau 10 ko 20 (10% ko 5%) don amfani.
Hydroxypropyl Watsawa
Hydroxypropyl dispersion resin kanta yana ƙunshe da wani adadin ƙarfi, kuma ba shi da sauƙi a yi kauri yayin aikin fenti. Sabili da haka, ana ƙara polyurethane gabaɗaya a cikin ƙarancin dilution rabo ko ƙara ba tare da dilution a cikin irin wannan tsarin ba.
Ya kamata a lura da cewa saboda tasirin babban adadin kaushi, tasirin daɗaɗɗa na yawancin polyurethane thickeners a cikin wannan nau'in tsarin ba a bayyane yake ba, kuma dole ne a zabi mai dacewa mai dacewa a cikin hanyar da aka yi niyya. Anan, Ina so in ba da shawarar SV-1140 na tushen ruwa na polyurethane associative thickener, wanda ke da inganci mai girma sosai kuma yana da kyakkyawan aiki a cikin tsarin ƙarfi mai ƙarfi.
Lokacin aikawa: Afrilu-25-2024