Putty foda ne yafi hada da fim-forming abubuwa (bonding kayan), fillers, ruwa-retaining jamiái, thickeners, defoamers, da dai sauransu Common Organic sinadaran albarkatun kasa a putty foda yafi hada da: cellulose, pregelatinized sitaci, sitaci ether, polyvinyl barasa. dispersible latex foda, da dai sauransu A yi da kuma amfani da daban-daban sinadaran albarkatun kasa Ana nazarin daya bayan daya a kasa.
1: Ma'anar da bambancin fiber, cellulose da cellulose ether
Fiber (US: Fiber; Turanci: Fiber) yana nufin wani abu da ya ƙunshi filaye masu ci gaba ko katsewa. Kamar su fiber na shuka, gashin dabba, fiber siliki, fiber na roba, da dai sauransu.
Cellulose shine polysaccharide macromolecular wanda ya ƙunshi glucose kuma shine babban tsarin tsarin ganuwar tantanin halitta. A cikin zafin jiki, cellulose ba ya narkewa a cikin ruwa ko a cikin abubuwan kaushi na gama gari. Abun da ke cikin cellulose na auduga yana kusa da 100%, yana mai da shi mafi kyawun asalin halitta na cellulose. A cikin itace gabaɗaya, cellulose yana da 40-50%, kuma akwai 10-30% hemicellulose da 20-30% lignin. Bambanci tsakanin cellulose (dama) da sitaci (hagu):
Gabaɗaya magana, duka sitaci da cellulose su ne macromolecular polysaccharides, kuma ana iya bayyana ma'anar kwayoyin kamar (C6H10O5) n. Nauyin kwayoyin halitta na cellulose ya fi na sitaci girma, kuma cellulose na iya bazuwa don samar da sitaci. Cellulose shine D-glucose da β-1,4 glycoside macromolecular polysaccharides wanda ya ƙunshi shaidu, yayin da sitaci ya kasance ta hanyar α-1,4 glycosidic bonds. Cellulose gabaɗaya baya reshe, amma sitaci yana reshe ta 1,6 glycosidic bonds. Cellulose baya narkewa a cikin ruwa, yayin da sitaci ke narkewa a cikin ruwan zafi. Cellulose ba shi da hankali ga amylase kuma baya juya shuɗi lokacin da aka fallasa shi da aidin.
Sunan Ingilishi na cellulose ether shine cellulose ether, wanda shine fili na polymer tare da tsarin ether da aka yi da cellulose. Yana da samfurin sinadarai na cellulose (shuka) tare da wakili na etherification. Dangane da tsarin tsarin sinadarai na maye gurbin bayan etherification, ana iya raba shi zuwa anionic, cationic da nonionic ethers. Dangane da etherification wakili amfani, akwai methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose cellulose, cyanoethyl cellulose, benzyl cyanoethyl cellulose, carboxy. masana'antar gine-gine, cellulose ether kuma ana kiransa cellulose, wanda shine sunan da ba daidai ba, kuma ana kiransa cellulose (ko ether) daidai. Tsarin kauri na cellulose ether thickener Cellulose ether thickener wani kauri ne wanda ba na ionic ba, wanda ke yin kauri musamman ta hanyar hydration da cuɗewa tsakanin kwayoyin halitta. Sarkar polymer na cellulose ether yana da sauƙi don samar da haɗin hydrogen tare da ruwa a cikin ruwa, kuma haɗin gwiwar hydrogen ya sa ya sami babban hydration da haɗuwa tsakanin kwayoyin halitta.
Lokacin da aka kara daɗaɗɗen ether cellulose a cikin fenti na latex, yana sha ruwa mai yawa, yana haifar da girman kansa don fadadawa sosai, yana rage sararin samaniya don pigments, fillers da latex particles; A lokaci guda kuma, sarƙoƙi na ether cellulose suna haɗaka don samar da tsarin hanyar sadarwa mai girma uku, kuma ana rufe Fillers masu launi da abubuwan latex a tsakiyar raga kuma ba za su iya gudana cikin yardar kaina ba. A ƙarƙashin waɗannan tasirin guda biyu, an inganta danko na tsarin! Cimma tasirin thickening da muke bukata!
Cellulose gama gari (ether): Gabaɗaya magana, cellulose a kasuwa yana nufin hydroxypropyl, hydroxyethyl galibi ana amfani dashi don fenti, fenti na latex, kuma ana amfani da hydroxypropyl methylcellulose don turmi, putty da sauran samfuran. Carboxymethyl cellulose ana amfani da talakawa putty foda ga ciki ganuwar. Carboxymethyl cellulose, kuma aka sani da sodium carboxymethyl cellulose, ake magana a kai a matsayin (CMC): Carboxymethyl cellulose (CMC) ne mara guba, wari fari flocculent foda tare da barga yi kuma shi ne sauƙin narkewa a cikin ruwa. Alkaline ko alkaline m ruwa mai danko, mai narkewa a cikin sauran manne da resins masu narkewa da ruwa, wanda ba zai iya narkewa a cikin kaushi na kwayoyin halitta kamar ethanol. CMC za a iya amfani da a matsayin mai ɗaure, thickener, suspending wakili, emulsifier, dispersant, stabilizer, sizing wakili, da dai sauransu Carboxymethyl cellulose (CMC) ne samfurin tare da most fitarwa, da widest kewayon amfani, da kuma mafi m amfani tsakanin cellulose ethers. , wanda aka fi sani da "monosodium glutamate masana'antu". Carboxymethyl cellulose yana da ayyuka na ɗaure, kauri, ƙarfafawa, emulsifying, riƙe ruwa da dakatarwa. 1. Aikace-aikacen sodium carboxymethyl cellulose a cikin masana'antar abinci: sodium carboxymethyl cellulose ba kawai mai kyau emulsification stabilizer da thickener a abinci aikace-aikace, amma kuma yana da kyau kwarai daskarewa da narkewa da kwanciyar hankali, kuma zai iya inganta The dandano na samfurin tsawanta lokacin ajiya. 2. Yin amfani da sodium carboxymethyl cellulose a cikin masana'antar harhada magunguna: ana iya amfani dashi azaman stabilizer emulsion don allura, ɗaure da wakili na fim don allunan a cikin masana'antar harhada magunguna. 3. CMC za a iya amfani da a matsayin anti-setling wakili, emulsifier, dispersant, leveling wakili, da m for coatings. Zai iya yin m abun ciki na rufi a ko'ina rarraba a cikin sauran ƙarfi, sabõda haka, da shafi ba delaminate na dogon lokaci. Hakanan ana amfani dashi sosai a cikin fenti. 4. Sodium carboxymethyl cellulose za a iya amfani da matsayin flocculant, chelating wakili, emulsifier, thickener, ruwa retaining wakili, sizing wakili, film-forming abu, da dai sauransu Har ila yau, an yi amfani da ko'ina a cikin Electronics, magungunan kashe qwari, fata, robobi, bugu, tukwane. Masana'antar sinadarai da ake amfani da su yau da kullun da sauran fagage, kuma saboda kyakkyawan aikin sa da fa'idodin amfani, koyaushe yana haɓaka sabbin filayen aikace-aikacen, kuma hasashen kasuwa yana da matuƙar girma. m. Misalai na aikace-aikacen: bangon waje na waje foda dabarar ciki bango putty foda dabara 1 Shuangfei foda: 600-650kg 1 Shuangfei foda: 1000kg 2 Farin ciminti: 400-350kg 2 Pregelatinized sitaci: 5-6kg 3 Pregelatinized sitaci: 05-6k - 15 kg ko HPMC2.5-3kg4 CMC: 10-15kg ko HPMC2.5-3kg Putty foda kara da cewa carboxymethyl cellulose CMC, pregelatinized sitaci yi: ① Yana da kyau azumi Thickening ikon; aikin haɗin gwiwa, da wasu riƙewar ruwa; ② Haɓaka ikon hana zamiya (sagging) na kayan, inganta aikin kayan aiki, da kuma sa aikin ya fi sauƙi; tsawaita lokacin bude kayan. ③ Bayan bushewa, saman yana da santsi, baya fadowa foda, yana da kyawawan abubuwan ƙirƙirar fim kuma babu tarkace. ④ Mafi mahimmanci, sashi yana da ƙananan, kuma ƙananan ƙwayar cuta zai iya cimma babban sakamako; a lokaci guda, ana rage farashin samarwa da kusan 10-20%. A cikin masana'antar gine-gine, ana amfani da CMC wajen samar da simintin siminti, wanda zai iya rage asarar ruwa kuma yana aiki azaman mai ragewa. Ko da don babban gini, yana iya inganta ƙarfin siminti kuma yana sauƙaƙe abubuwan da suka riga sun faɗi daga membrane. Wata babbar manufar ita ce goge bangon fari da foda mai ɗorewa, ƙwanƙwasa ƙwanƙwasa, wanda zai iya adana yawancin kayan gini da haɓaka ƙirar kariya da haske na bango. Hydroxyethyl methylcellulose, wanda ake kira (HEC): dabarar sinadarai:
1. Gabatarwa zuwa hydroxyethyl cellulose: Hydroxyethyl cellulose (HEC) ne mara-ionic cellulose ether sanya daga halitta polymer abu cellulose ta jerin sinadaran tafiyar matakai. Yana da wani wari, maras ɗanɗano, farin foda ko granule mara guba, wanda za'a iya narkar da shi cikin ruwan sanyi don samar da ingantaccen bayani mai ma'ana, kuma ƙimar pH ba ta shafar rushewar. Yana da thickening, dauri, dispersing, emulsifying, film-forming, suspending, adsorbing, surface aiki, danshi-retaining da gishiri-resistant Properties.
2. Ma'anonin fasaha Ma'auni na aikin bayyanar Fari ko rawaya foda Molar maye gurbin (MS) 1.8-2.8 Ruwan da ba zai iya narkewa ba (%) ≤ 0.5 Asarar bushewa (WT%) ≤ 5.0 Rago kan ƙonewa (WT%) ≤ 5.0 PH darajar 6.0- 8.5. Dankowa (mPa.s) 2%, 30000, 60000, 100000 ruwa bayani a 20 ° C Uku, da abũbuwan amfãni daga hydroxyethyl cellulose High thickening sakamako.
● Hydroxyethyl cellulose yana ba da kyawawan kaddarorin kayan kwalliya don suturar latex, musamman maɗaurin PVA mai girma. Babu flocculation faruwa lokacin da fenti ne mai kauri gini.
● Hydroxyethyl cellulose yana da sakamako mafi girma. Zai iya rage sashi, inganta tattalin arzikin dabarar, da inganta juriya na gogewa.
Kyakkyawan kaddarorin rheological
Maganin ruwa mai ruwa na hydroxyethyl cellulose tsarin ne wanda ba Newtonian ba, kuma dukiyar maganinta ana kiranta thixotropy.
● A cikin matsayi na tsaye, bayan samfurin ya narkar da shi gaba daya, tsarin sutura yana kula da mafi kyawun lokacin girma da budewa.
● A cikin yanayin zubarwa, tsarin yana kula da danko mai tsaka-tsaki, don haka samfurin yana da kyakkyawan ruwa kuma ba zai fantsama ba.
● Lokacin amfani da goga da abin nadi, samfurin yana yaduwa cikin sauƙi akan ma'auni. Ya dace don ginawa. A lokaci guda, yana da juriya mai kyau.
● A ƙarshe, bayan an gama rufewa, danko na tsarin ya dawo nan da nan, kuma murfin nan da nan ya ɓace.
Watsewa da Solubility
● Hydroxyethyl cellulose ana bi da shi tare da jinkirin rushewa, wanda zai iya hana agglomeration yadda ya kamata lokacin da aka ƙara busassun foda. Bayan tabbatar da cewa HEC foda yana da kyau tarwatsa, fara hydration.
● Hydroxyethyl cellulose tare da dace surface jiyya iya da kyau daidaita rushe kudi da danko karuwa kudi na samfurin.
kwanciyar hankali ajiya
● Hydroxyethyl cellulose yana da kyawawan kaddarorin anti-mildew kuma yana ba da isasshen lokacin ajiyar fenti. Yadda ya kamata ya hana pigments da fillers daga daidaitawa. 4. Yadda ake amfani da: (1) Ƙara kai tsaye yayin samarwa Wannan hanyar ita ce mafi sauƙi kuma tana ɗaukar mafi ƙarancin lokaci. Matakan sune kamar haka: 1. Sanya ruwa mai tsabta a cikin babban guga wanda aka sanye da babban mai tayar da hankali. 2. Fara motsawa akai-akai a cikin ƙananan gudu kuma a hankali a hankali zazzage hydroxyethyl cellulose a cikin bayani daidai. 3. Ci gaba da motsawa har sai dukkanin kwayoyin halitta sun jike. 4. Sa'an nan kuma ƙara antifungal wakili da daban-daban Additives. Irin su pigments, dispersing aids, ammoniya ruwa, da dai sauransu. 5. Dama har sai duk hydroxyethyl cellulose ne gaba daya narkar da (danko na bayani ƙara muhimmanci) kafin ƙara wasu aka gyara a cikin dabara domin dauki. (2) Shirya barasa don amfani: Wannan hanyar ita ce a fara shirya barasa mai yawa tare da maida hankali sosai, sannan a saka shi a cikin samfurin. Amfanin wannan hanyar shine yana da mafi girman sassauci kuma ana iya ƙara shi kai tsaye zuwa samfurin da aka gama, amma dole ne a adana shi da kyau. Matakan sun yi kama da matakai (1-4) a cikin hanya (1): Bambanci shine cewa ba a buƙatar mai tayar da hankali mai karfi, kawai wasu masu tayar da hankali da isasshen iko don kiyaye hydroxyethyl cellulose daidai tarwatsa a cikin bayani, ci gaba da motsawa har sai an narkar da shi gaba daya. a cikin wani viscous bayani. Ya kamata a lura cewa dole ne a ƙara wakili na antifungal a cikin mahaifiyar giya da wuri-wuri. V. Aikace-aikacen 1. An yi amfani da shi a cikin launi na latex na ruwa: HEC, a matsayin colloid mai kariya, za a iya amfani da shi a cikin vinyl acetate emulsion polymerization don inganta kwanciyar hankali na tsarin polymerization a cikin nau'i mai yawa na pH. A cikin kera samfuran da aka gama, ana amfani da abubuwan ƙari kamar su pigments da filler don tarwatsawa iri ɗaya, daidaitawa da samar da tasirin kauri. Hakanan za'a iya amfani dashi azaman mai watsawa don abubuwan dakatarwa kamar su styrene, acrylate, da propylene. Yin amfani da fenti na latex na iya haɓaka aikin kauri da haɓaka sosai. 2. Dangane da hakar mai: Ana amfani da HEC a matsayin mai kauri a cikin laka daban-daban da ake buƙata don hakowa, gyara rijiyoyi, aikin rijiyar siminti da fashewar laka, ta yadda laka za ta sami ruwa mai kyau da kwanciyar hankali. Haɓaka ƙarfin ɗaukar laka yayin hakowa, da hana ruwa mai yawa daga shiga cikin layin mai daga laka, tabbatar da ƙarfin samar da layin mai. 3. An yi amfani da shi wajen ginin gine-gine da kayan gini: Saboda ƙarfin riƙe ruwa mai ƙarfi, HEC yana da tasiri mai mahimmanci da kuma ɗaure don siminti da turmi. Ana iya haɗa shi cikin turmi don inganta haɓakar ruwa da aikin gini, da kuma tsawaita lokacin ƙafewar ruwa , Inganta ƙarfin farko na siminti kuma kauce wa fasa. Yana iya inganta riƙon ruwa da ƙarfin haɗin gwiwa sosai lokacin da aka yi amfani da shi don filastar filasta, haɗin haɗin gwiwa, da filasta. 4. Ana amfani da man goge baki: saboda tsananin juriya ga gishiri da acid, HEC na iya tabbatar da kwanciyar hankali na man goge baki. Bugu da ƙari, man goge baki ba shi da sauƙi don bushewa saboda ƙarfin riƙewar ruwa da ikon emulsifying. 5. Lokacin amfani da tawada na tushen ruwa, HEC na iya sa tawada ya bushe da sauri kuma ba zai iya jurewa ba. Bugu da kari, ana amfani da HEC sosai wajen bugu da rini, yin takarda, sinadarai na yau da kullun da sauransu. 6. Kariya don amfani da HEC: a. Hygroscopicity: Duk nau'ikan hydroxyethyl cellulose HEC sune hygroscopic. Abubuwan da ke cikin ruwa gabaɗaya suna ƙasa da kashi 5% yayin barin masana'anta, amma saboda yanayin sufuri da ma'adana daban-daban, abubuwan da ke cikin ruwa za su fi lokacin barin masana'anta. Lokacin amfani da shi, kawai auna abun ciki na ruwa kuma cire nauyin ruwan lokacin ƙididdigewa. Kada ku bijirar da shi ga yanayi. b. Dust foda yana da fashewa: idan duk foda na kwayoyin halitta da hydroxyethyl cellulose foda foda suna cikin iska a wani nau'i, kuma za su fashe lokacin da suka hadu da wuta. Ya kamata a yi aiki mai kyau don kauce wa ƙurar foda a cikin yanayi kamar yadda zai yiwu. 7. Ƙididdigar marufi: An yi samfurin da takarda-roba mai haɗaɗɗiyar jakar da aka yi da jakar ciki ta polyethylene, tare da nauyin net na 25 kg. Ajiye a cikin busasshiyar wuri a cikin gida lokacin adanawa, kuma kula da danshi. Kula da ruwan sama da kariya ta rana yayin sufuri. Hydroxypropyl methyl cellulose, ana kiranta da (HPMC): hydroxypropyl methyl cellulose (HPMC) wani wari ne, maras ɗanɗano, farin foda mara guba, akwai nau'i biyu na nan take kuma ba nan take ba, nan take, Lokacin saduwa da ruwan sanyi, yana sauri. ya watse ya bace cikin ruwa. A wannan lokacin, ruwa ba shi da danko. Bayan kamar minti 2, dankon ruwan yana ƙaruwa, yana samar da colloid mai haske. Nau'in da ba na nan take: Ana iya amfani da shi kawai a busassun kayayyakin foda kamar su busassun foda da turmi siminti. Ba za a iya amfani da shi a cikin manne ruwa da fenti ba, kuma za a sami ƙugiya.
Lokacin aikawa: Dec-26-2022