Babban darajar HEC

Matsayin fentiHEC Hydroxyethyl cellulose wani nau'i ne na nau'in polymer mai narkewa wanda ba na ionic ba, fari ko foda mai launin rawaya, mai sauƙi don gudana, maras ban sha'awa da rashin jin daɗi, na iya narke a cikin ruwan sanyi da ruwan zafi, kuma yawan rushewar yana ƙaruwa da zafin jiki, gabaɗaya insoluble a mafi yawan kwayoyin halitta. abubuwan narkewa. Yana da kyakkyawan kwanciyar hankali na PH da ɗan ƙaramin ɗanƙoƙi a cikin kewayon ph2-12. HEC yana da babban juriya na gishiri da ƙarfin hygroscopic, kuma yana da ƙarfin riƙe ruwa mai ƙarfi. Its ruwa bayani yana da surface aiki da high danko kayayyakin da high pseudoplasticity. Za a iya sanya shi a cikin fim mai haske mai haske tare da matsakaicin ƙarfi, ba a sauƙaƙe gurbataccen mai ba, haske ba ya shafa, har yanzu yana da fim ɗin HEC mai narkewa. Bayan jiyya na sama, HEC ya watse kuma baya haɗuwa cikin ruwa, amma yana narkewa a hankali. Ana iya daidaita PH zuwa 8-10 kuma da sauri ya narke.

Babban kaddarorin

Hydroxyethyl cellulose(HEC)shine cewa ana iya narkar da shi a cikin ruwan sanyi da ruwan zafi, kuma ba shi da halayen gel. Yana da fadi da kewayon maye, solubility da danko. Yana da kwanciyar hankali mai kyau na thermal (kasa da 140 ° C) kuma baya samarwa a ƙarƙashin yanayin acidic. hazo. Maganin hydroxyethyl cellulose (HEC) zai iya samar da fim mai haske, wanda ba shi da siffofi na ionic wanda ba sa hulɗa tare da ions kuma yana da kyakkyawar dacewa.

A matsayin colloid mai karewa, ana iya amfani da darajar Paint HEC don vinyl acetate emulsion polymerization don inganta zaman lafiyar tsarin polymerization a cikin kewayon PH mai fadi. A cikin yi na ƙãre kayayyakin yin pigment, filler da sauran Additives a ko'ina tarwatsa, barga da kuma samar da thickening sakamako. Hakanan za'a iya amfani da shi don styrene, acrylic, acrylic da sauran polymers da aka dakatar da su azaman masu rarrabawa, waɗanda aka yi amfani da su a cikin fenti na latex na iya inganta haɓakar kauri, haɓaka aikin haɓaka.

Ƙimar Kemikal

Kayayyaki Maki 

Hanyar aikace-aikacen hydroxyethyl cellulose HEC a cikin ruwafenti

1. Ƙara kai tsaye lokacin da ake niƙa pigment: wannan hanya ita ce mafi sauƙi, kuma lokacin da aka yi amfani da shi yana da gajeren lokaci. Cikakken matakan sune kamar haka:

(1) Ƙara ruwa mai tsabta da ya dace a cikin VAT na babban abin tayar da hankali (gaba ɗaya, ethylene glycol, wakili na wetting da wakilin fim ana ƙara a wannan lokacin)

(2) Fara motsawa a ƙananan gudu kuma a hankali ƙara hydroxyethyl cellulose

(3) Ci gaba da motsawa har sai dukkanin kwayoyin halitta sun jike

(4) ƙara mai hana mildew, mai sarrafa PH, da sauransu

(5) Dama har sai duk hydroxyethyl cellulose ya narke gaba daya (dankowar maganin yana ƙaruwa sosai) kafin ƙara wasu abubuwan da ke cikin dabarar, kuma a niƙa har sai ya zama fenti.

2. sanye take da uwa ruwa jira: wannan hanya da aka farko sanye take da mafi girma taro na uwa ruwa, sa'an nan kuma ƙara latex Paint, da amfani da wannan hanya ne mafi girma sassauci, za a iya kai tsaye ƙara zuwa fenti gama kayayyakin, amma dole ne dace ajiya. . Matakai da hanyoyin sun yi kama da matakai (1) - (4) a cikin Hanyar 1, sai dai cewa ba a buƙatar babban mai tayar da hankali ba kuma kawai wasu masu tayar da hankali tare da isasshen iko don kiyaye filayen hydroxyethyl a ko'ina a cikin bayani ya isa. Ci gaba da motsawa har sai ya narke gaba daya cikin bayani mai kauri. Lura cewa dole ne a ƙara mai hana mildew zuwa uwar barasa da wuri-wuri.

3. Porridge kamar phenology: Tun da kwayoyin kaushi ne mummunan kaushi ga hydroxyethyl cellulose, wadannan kwayoyin kaushi za a iya sanye take da porridge. Abubuwan da aka fi amfani da su kamar su ethylene glycol, propylene glycol, da masu samar da fina-finai (kamar hexadecanol ko diethylene glycol butyl acetate), ruwan kankara ma rashin ƙarfi ne, don haka ana amfani da ruwan kankara tare da ruwa mai laushi a cikin porridge. Gruel - kamar hydroxyethyl cellulose za a iya ƙara kai tsaye zuwa fenti. Hydroxyethyl cellulose an cika shi a cikin nau'in porridge. Bayan ƙara lacquer, narke nan da nan kuma sami sakamako mai kauri. Bayan ƙarawa, ci gaba da motsawa har sai hydroxyethyl cellulose ya narkar da shi kuma ya narke. Ana yin porridge na yau da kullun ta hanyar haɗa sassa shida na kaushi na halitta ko ruwan kankara tare da wani ɓangare na hydroxyethyl cellulose. Bayan kimanin minti 5-30, an cire PaintHEChydrolyzes kuma a bayyane ya tashi. A lokacin rani, zafi na ruwa yana da yawa don amfani da poridge.

4 .Abubuwan da ke buƙatar kulawa lokacin da ake ba da giya hydroxyethyl cellulose uwar barasa:

Pgargadi

1 Kafin da bayan ƙara darajar fentiHEC, dole ne a ci gaba da motsawa har sai bayani ya zama cikakke kuma bayyananne.

2. Sai ki kwashe hydroxyethyl cellulose a cikin tankin hadawa sannu a hankali. Kada a ƙara shi a cikin tanki mai yawa ko kai tsaye cikin ma'aunin fenti mai girma ko mai siffar zobe.HEC.

Zazzabi na ruwa 3 da ƙimar pH na ruwa suna da alaƙa a bayyane ga rushewar darajar FentiHEChydroxyethyl cellulose, don haka ya kamata a biya kulawa ta musamman.

Kada a ƙara wani abu na asali a cikin cakuda kafin darajar FentiHEChydroxyethyl cellulose foda an jika shi da ruwa. Tada pH bayan jiƙa yana taimakawa narkewa.

5 .Kamar yadda zai yiwu, farkon ƙari na mai hana mildew.

6 Lokacin amfani da babban makin fentiHEC, Matsakaicin adadin giya na uwa bai kamata ya zama sama da 2.5-3% (ta nauyi ba), in ba haka ba mahaifiyar giya yana da wahalar aiki.

Abubuwan da ke shafar dankowar fenti na latex

1.The more saura iska kumfa a cikin Paint, da mafi girma da danko.

2.Shin adadin mai kunnawa da ruwa a cikin dabarar fenti daidai ne?

3 a cikin kira na latex, ragowar mai kara kuzari oxide abun ciki na adadin.

4. The sashi na sauran na halitta thickeners a cikin fenti dabara da sashi rabo tare da Paint saHEC.)

5.a cikin aiwatar da fenti, tsari na matakai don ƙara thickener ya dace.

6.Sakamakon tashin hankali da yawa da zafi yayin watsawa.

7.Microbial yashwar thickener.

Marufi: 

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