Jakar HPMC mai laushi

Dankowar Hydroxypropyl methyl cellulose (HPMC) don Skim coat?

– amsa: Skim coat yana da kyau yawanci HPMC 100000cps, wasu sun fi tsayi fiye da abin da ake buƙata a turmi, suna son ikon amfani da 150000cps. Bugu da ƙari, HPMC shine mafi mahimmancin aikin riƙe ruwa, sai kuma kauri. A cikin Skim coat, matuƙar riƙe ruwa yana da kyau, ɗanko yana da ƙasa (7-80000), yana yiwuwa kuma, ba shakka, ɗanko ya fi girma, riƙe ruwa mai alaƙa ya fi kyau, lokacin da ɗanko ya fi 100, ɗanko na riƙe ruwa ba shi da yawa.

Menene manyan alamun fasaha na hydroxypropyl methyl cellulose (HPMC)?

Amsa: Yawan sinadarin Hydroxypropyl da danko, yawancin masu amfani suna damuwa da waɗannan alamomi guda biyu. Yawan sinadarin Hydroxypropyl yana da yawa, riƙon ruwa gabaɗaya ya fi kyau. Danko, riƙon ruwa, dangi (amma ba cikakke ba) shi ma ya fi kyau, kuma danko, turmi na siminti ya fi kyau a yi amfani da wasu.

Menene manyan kayan da ake amfani da su wajen samar da sinadarin Hydroxypropyl methyl cellulose (HPMC)?

Amsa: hydroxypropyl methyl cellulose (HPMC) manyan kayan masarufi: auduga mai ladabi, chloromethane, propylene oxide, sauran kayan masarufi, alkali na kwamfutar hannu, acid, toluene, isopropyl alcohol da sauransu.

HPMC a cikin Skim gashi a cikin aikace-aikacen, babban rawar, ko sinadarai?

Amsa: HPMC a cikin Skim coat, kauri, ruwa da gina ayyuka uku. Kauri: ana iya ƙara cellulose zuwa dakatarwa, don haka maganin ya kasance iri ɗaya sama da ƙasa rawar da hana kwarara ke ratayewa. Rike ruwa: sa Skim coat ya bushe a hankali, ƙarin launin toka a cikin aikin amsawar ruwa. Ginawa: man shafawa na cellulose, zai iya sa Skim coat yana da kyakkyawan tsari. HPMC ba ya shiga cikin duk wani martanin sinadarai, amma yana taka rawa kawai. Skim coat da ruwa, a bango, amsawar sinadarai ne, saboda samar da sabbin abubuwa, bangon Skim ya rufe daga bango, ya niƙa ya zama foda, sannan a yi amfani da shi, ba shi da kyau, saboda ya samar da sabon abu (calcium carbonate). Babban abubuwan da ke cikin foda mai launin toka sune: Ca(OH)2, CaO da ƙaramin adadin cakuda CaCO3, CaO+H2O=Ca(OH)2 – Ca(OH)2+CO2=CaCO3↓+H2O sinadarin calcium mai launin toka a cikin ruwa da iska ƙarƙashin aikin CO2, samuwar calcium carbonate, da kuma HPMC kawai ruwa, sinadarin calcium mai launin toka mafi kyau, nasa bai shiga cikin wani martani ba.

HPMC cellulose ether ne wanda ba ionic ba, don haka menene ba ionic ba?

A: Gabaɗaya, abubuwan da ba ion ba sune abubuwan da ba sa yin ion a cikin ruwa. Ionization shine rabuwar electrolyte zuwa ion masu caji masu motsi a cikin wani takamaiman sinadarin sinadarai, kamar ruwa ko barasa. Misali, gishirin da muke ci kowace rana - sodium chloride (NaCl) yana narkewa a cikin ruwa kuma yana yin ionizes don samar da ions masu motsi masu motsi (Na+) tare da caji mai kyau da ions masu chloride (Cl) tare da cajin mara kyau. Wato, HPMC a cikin ruwa baya rabuwa zuwa ions masu caji, amma yana wanzuwa azaman ƙwayoyin halitta.

Menene alaƙar zafin gelation na hydroxypropyl methyl cellulose?

Amsa: Zafin gel na HPMC yana da alaƙa da abun da ke cikin methoxyl. Mafi ƙarancin abun da ke cikin methoxyl, haka nan zafin gel ɗin yake.

Foda mai laushi da HPMC babu wata alaƙa?

Amsa: Foda mai laushi da ingancin sinadarin calcium ash suna da alaƙa mai girma, kuma HPMC ba ta da alaƙa mai girma. Ƙarancin sinadarin calcium a cikin sinadarin calcium mai launin toka da kuma rashin daidaiton CaO da Ca(OH)2 a cikin sinadarin calcium mai launin toka zai haifar da faɗuwar foda. Idan akwai alaƙa da HPMC, to rashin isasshen riƙe ruwa na HPMC shi ma zai haifar da asarar foda.

Menene bambanci tsakanin cellulose mai narkewa cikin ruwan sanyi da kuma hydroxypropyl methyl cellulose mai narkewa cikin ruwan zafi a tsarin samarwa?

– Amsa: Nau'in maganin ruwan sanyi na HPMC ana yin sa ne bayan an yi maganin glyoxal surface, a saka a cikin ruwan sanyi da sauri, amma ba a narke sosai ba, sai ya narke, sannan ya narke. Ba a yi wa nau'in da ke narkewa da zafi magani da glyoxal ba. Adadin glyoxal yana da yawa, watsawa yana da sauri, amma danko yana da jinkiri, adadin yana da ƙarami, akasin haka.

Me ke kawo ƙamshi game da hydroxypropyl methyl cellulose (HPMC)?

– Amsa: Ana yin HPMC ta hanyar amfani da hanyar narkewar abinci daga toluene da isopropyl barasa. Idan wankewar ba ta da kyau sosai, za a sami ɗanɗanon da ya rage.

Amfani daban-daban, ta yaya za a zaɓi hydroxypropyl methyl cellulose (HPMC) da ya dace?

– amsa: a gaji da shafa foda na yara: buƙatar ta yi ƙasa, danko 100000, to, yana da mahimmanci a kare ruwa don ya kasance kusa. Aiwatar da turmi: buƙatu mafi girma, buƙatun danko mai yawa, 150000 don ya fi kyau. Aiwatar da manne: buƙatar samfuran nan take, danko mai yawa.

Menene wani suna da ake kira hydroxypropyl methyl cellulose?

– AMSA: Hydroxypropyl MethylCellulose, An taƙaita shi azaman HPMC ko MHPC, ko Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether.

HPMC wajen amfani da Skim coat, me yasa Skim coat kumfa?

Amsa: HPMC a cikin skim coat, kauri, ruwa da gina ayyuka uku. Rashin shiga cikin wani abu. Dalilan kumfa: 1, ruwa da yawa. 2, ƙasan ba ta bushe ba, a saman scraping layer, kuma tana da sauƙin kumbura.

Tsarin gashi mai laushi?

– amsa: bangon ciki: Bakin ciki: Calcium 800KG launin toka calcium 150KG (sitaci ether, kore mai kyau, peng runtu, citric acid, polyacrylamide za a iya ƙara shi yadda ya kamata)

Bango na waje: siminti 350KG calcium 500KG quartz yashi 150KG foda latex 8-12kg cellulose ether 3KG sitaci ether 0.5kg zare na itace 2KG

Menene bambanci tsakanin HPMC da MC?

– Amsa: MC methyl cellulose ne, wanda aka yi shi da cellulose ether ta hanyar jerin halayen da methane chloride a matsayin wakili mai tsarkakewa bayan an yi wa auduga mai tsafta magani da alkali. Gabaɗaya, matakin maye gurbin shine 1.6~2.0, kuma narkewar ya bambanta dangane da matakin maye gurbin. Ya kasance na cellulose ether nonionic.

(1) Rike ruwa na methyl cellulose ya dogara da adadin ƙarinsa, danko, danko na barbashi da kuma yawan narkewar sa. Gabaɗaya ƙara yawansa, ƙaramin danko, danko, da kuma yawan riƙe ruwa yana da yawa. Daga cikinsu, adadin ƙarin yana da babban tasiri akan riƙe ruwa, kuma danko ba ya daidai da riƙe ruwa. Yawan narkewar ya dogara ne akan matakin gyaran saman da kuma ɗanko na barbashi na barbashi na cellulose. A cikin wasu ƙwayoyin cellulose da ke sama, adadin riƙe ruwa na methyl cellulose da hydroxypropyl methyl cellulose ya fi girma.

(2) Methyl cellulose yana narkewa a cikin ruwan sanyi, wanda yake da wuya a narke a cikin ruwan zafi. Maganin ruwansa yana da ƙarfi sosai a cikin pH = 3 ~ 12. Yana da kyakkyawan jituwa da sitaci, guanidine danko da kuma yawancin surfactants. Gelation yana faruwa ne lokacin da zafin jiki ya kai zafin gelation.

(3) Sauyin zafin jiki zai yi tasiri sosai ga yawan riƙe ruwa na methyl cellulose. Gabaɗaya, mafi girman zafin jiki, haka nan riƙon ruwa ke ƙara muni. Idan zafin turmi ya wuce 40℃, riƙon ruwa na methyl cellulose zai yi muni sosai, wanda hakan ke shafar yadda turmi ke aiki sosai.

(4) Methyl cellulose yana da tasiri a fili akan iya ginawa da mannewa na turmi. "Mannewa" a nan yana nufin mannewa da ma'aikacin ke ji tsakanin kayan aiki da abin da ke kan bango, wato juriyar yanke turmi. Mannewa yana da girma, juriyar yanke turmi yana da girma, ƙarfin da ma'aikata ke buƙata yayin amfani shi ma yana da girma, kuma gina turmi ba shi da kyau. A cikin samfuran cellulose ether, mannewar methyl cellulose yana da matsakaicin matsayi.

Ana tace sinadarin HPMC hydroxypropyl methyl cellulose, ta hanyar auduga bayan an yi maganin alkali, tare da propylene oxide da chloromethane a matsayin wakili mai hana etherifying, ta hanyar jerin martani kuma an yi su da gaurayen ether cellulose marasa ionic. Matsakaicin maye gurbinsa gabaɗaya shine 1.2~2.0. Halayensa sun bambanta dangane da rabon methoxy da hydroxypropyl.

(1) Hydroxypropyl methyl cellulose yana narkewa cikin sauƙi a cikin ruwan sanyi, wanda yake da wahalar narkewa a cikin ruwan zafi. Duk da haka, zafin gelation ɗinsa a cikin ruwan zafi a bayyane yake ya fi na methyl cellulose. An kuma inganta narkewar methyl cellulose a cikin ruwan sanyi sosai.

(2) Dankowar hydroxypropyl methyl cellulose yana da alaƙa da nauyin kwayoyin halittarsa, kuma mafi girman nauyin kwayoyin halittar, haka nan dankowar take. Zafin jiki kuma yana shafar dankowar. Dankowar yana raguwa yayin da zafin jiki ke ƙaruwa. Amma tasirin dankowar sa mai zafi ya yi ƙasa da na methyl cellulose. Maganin yana da ƙarfi idan aka adana shi a zafin jiki na ɗaki.

(3) Hydroxypropyl methyl cellulose yana da daidaito ga acid da tushe, kuma ruwan da ke cikinsa yana da daidaito sosai a cikin kewayon pH = 2 ~ 12. Soda mai kauri da ruwan lemun tsami ba su da tasiri sosai a kan halayensa, amma alkali na iya hanzarta saurin narkewarsa da inganta danko. Hydroxypropyl methyl cellulose yana da daidaito ga gishirin gabaɗaya, amma idan yawan ruwan gishiri ya yi yawa, danko na ruwan hydroxypropyl methyl cellulose yana ƙaruwa.

(4) Rikewar ruwa na hydroxypropyl methyl cellulose ya dogara da yawansa da kuma dankonsa, kuma yawan riƙewar ruwa na hydroxypropyl methyl cellulose ya fi na methyl cellulose a daidai wannan adadin.

(5) Ana iya haɗa sinadarin Hydroxypropyl methyl cellulose da sinadaran polymer masu narkewa cikin ruwa don su zama ruwan da ya dace, mai ƙarfi. Kamar polyvinyl alcohol, sitaci ether, manne na kayan lambu da sauransu.

(6) Mannewar hydroxypropyl methyl cellulose ga ginin turmi ya fi na methyl cellulose girma.

(7) Hydroxypropyl methyl cellulose yana da juriya ga enzyme fiye da methyl cellulose, kuma yiwuwar lalacewar enzyme na mafita yana ƙasa da na methyl cellulose.

Me ya kamata a kula da shi a aikace game da alaƙar da ke tsakanin danko da zafin jiki na HPMC?

Amsa: Danko na HPMC yana da daidaiton da ya dace da zafin jiki, wato, danko yana ƙaruwa tare da raguwar zafin jiki. Idan muka yi magana game da danko na wani samfuri, muna magana ne game da danko na kashi 2% na samfurin a cikin ruwa a digiri 20 na Celsius.

A aikace, a yankunan da ke da babban bambancin zafin jiki tsakanin lokacin rani da hunturu, ya kamata a lura cewa ana ba da shawarar a yi amfani da ƙarancin ɗanko a lokacin hunturu, wanda ya fi dacewa da gini. In ba haka ba, idan zafin ya yi ƙasa, ɗanko na cellulose zai ƙaru, kuma lokacin da ake gogewa, jin zai yi nauyi.

Matsakaicin danko: 75000-100000 galibi ana amfani da shi don putty

Dalili: Kyakkyawan riƙe ruwa

Babban danko: HPMC 150000-200000 ana amfani da shi ne musamman don rufin barbashi na polystyrene da kuma turmi mai rufi.

Dalili: yawan danko, turmi ba shi da sauƙin faɗuwa, yana rataye da ruwa, yana inganta ginin.

Amma gabaɗaya, yayin da yawan danko yake ƙaruwa, haka nan kuma yawan riƙe ruwa yake ƙaruwa, masana'antun turmi da yawa, idan aka yi la'akari da farashinsa, suna amfani da matsakaicin danko na HPMC cellulose (75000-100000) don maye gurbin matsakaicin danko na HPMC cellulose (20000-40000) don rage yawan ƙarin.