Focus on Cellulose ethers

Babban danko CMC

Babban dankoCMCfari ne ko madara fari fibrous foda ko granules, tare da yawa na 0.5-0.7 g/cm3, kusan mara wari, mara daɗi, da hygroscopic. A sauƙaƙe tarwatsa cikin ruwa don samar da maganin colloidal na gaskiya, wanda ba zai iya narkewa a cikin kaushi mai ƙarfi kamar ethanol. Matsakaicin pH na 1% mai ruwa shine 6.5 zuwa 8.5. Lokacin da pH ya kasance> 10 ko <5, za a rage danko na mannewa sosai, kuma aikin zai zama mafi kyau lokacin da pH ya kasance 7. Matsayin CMC maye gurbin kai tsaye yana rinjayar solubility, emulsification, da haɓakawa na CMC. Daidaitawa, kwanciyar hankali, juriya na acid da juriya na gishiri da sauran kaddarorin.

An yi imani da cewa lokacin da digiri na maye gurbin ya kasance a kusa da 0.6-0.7, aikin emulsifying ya fi kyau, kuma tare da karuwar darajar maye gurbin, wasu kaddarorin suna inganta daidai. Lokacin da matakin maye gurbin ya fi 0.8, juriya na acid da juriya na gishiri suna haɓaka sosai. .

Babban alamun don auna ingancin CMC sune digiri na maye gurbin (DS) da tsabta. Gabaɗaya, kaddarorin CMC sun bambanta idan DS ya bambanta; mafi girman matakin maye gurbin, mafi ƙarfi da ƙarfi, kuma mafi kyawun nuna gaskiya da kwanciyar hankali na mafita. A cewar rahotanni, nuna gaskiya na CMC ya fi kyau lokacin da matakin maye gurbin shine 0.7-1.2, kuma danko na maganin ruwa shine mafi girma lokacin da darajar pH ta kasance 6-9.

Ingancin samfuran ƙãre CMC ya dogara ne akan maganin samfurin. Idan bayani na samfurin ya bayyana a fili, akwai 'yan gel barbashi, free zaruruwa, da kuma baki spots na ƙazanta, shi ne m tabbatar da cewa ingancin CMC ne mai kyau. Idan an bar maganin na ƴan kwanaki, maganin ba zai bayyana ba. Fari ko turbid, amma har yanzu a bayyane yake, wannan shine mafi kyawun samfur!

1. Taƙaitaccen gabatarwar babban darajar fasaha na CMC da ƙarancin ƙwaƙƙwaran fasaha na CMC don haƙon mai

1. CMC laka na iya sa bangon rijiyar ya zama siriri mai tsauri kuma mai tsauri tare da ƙarancin ƙarfi, yana rage asarar ruwa.

2. Bayan an ƙara CMC a cikin laka, na'urar hakowa na iya samun ƙaramin ƙarfi na farko na farko, ta yadda laka za ta iya sakin iskar gas ɗin da aka nannade a cikinta cikin sauƙi, kuma a lokaci guda, za a iya watsar da tarkace a cikin ramin laka.

3. Haƙa laka, kamar sauran abubuwan dakatarwa da tarwatsewa, yana da takamaiman rayuwa. Ƙara CMC na iya sanya shi kwanciyar hankali da tsawaita rayuwar shiryayye.

4. Laka da ke dauke da CMC yana da wuyar kamuwa da mold, don haka ba lallai ba ne don kula da ƙimar pH mai girma da amfani da masu kiyayewa.

5. Ya ƙunshi CMC a matsayin wakili na jiyya don hako ruwan laka, wanda zai iya tsayayya da gurɓataccen gishiri daban-daban.

6. Laka mai ɗauke da CMC yana da kwanciyar hankali mai kyau kuma yana iya rage asarar ruwa koda kuwa zafin jiki ya wuce 150 ° C.

Mahimmanci: CMC tare da babban danko da babban matsayi na maye gurbin ya dace da laka tare da ƙananan yawa, kuma CMC tare da ƙananan danko da babban matsayi na maye gurbin ya dace da laka tare da babban yawa. Ya kamata a ƙayyade zaɓi na CMC bisa ga yanayi daban-daban kamar nau'in laka, yanki, da zurfin rijiyar.

Babban aikace-aikacen: MB-CMC3 yana taka rawa na ɗagawa da rage asarar ruwa da haɓaka danko a cikin hakowa, ruwan siminti da fashewar ruwa, don cimma ayyukan kare bango, ɗaukar yankan, kare haƙora, hana asarar laka da haɓaka. gudun hakowa. Ƙara shi kai tsaye ko sanya shi a cikin manne kuma ƙara shi a cikin laka, ƙara 0.1-0.3% zuwa slurry ruwa mai dadi, kuma ƙara 0.5-0.8% zuwa slurry ruwan gishiri.

2. Aikace-aikacen CMC a cikin masana'antar shafa

Babban manufar:

A matsayin stabilizer, zai iya hana sutura daga rabuwa saboda canje-canje mai tsanani a cikin zafin jiki.

A matsayin tackifier, zai iya sa yanayin suturar ta zama uniform, cimma madaidaicin ajiya da dankowar gini, da kuma guje wa lalata mai tsanani yayin lokacin ajiya.

Yana ba da kariya daga drips da sags yayin amfani.

ST, SR jerin nan take CMC za a iya narkar da gaba daya a cikin 30 minutes, forming a fili, m, uniform colloidal bayani, ba tare da dogon lokaci soaking da kuma m stirring.

Alamun fasaha na CMC mai rufi:

3. Aikace-aikacen CMC a masana'antar yumbu

Babban aikace-aikacen: Ana amfani da MB-CMC3 a cikin tukwane azaman retarder, wakili mai riƙe ruwa, mai kauri da stabilizer. A cikin tsarin samar da yumbu, ana amfani da shi a cikin jikin yumbura, slurry glaze da bugu don inganta ƙarfin flexural na jiki da inganta kwanciyar hankali na glaze slurry.

4. Aikace-aikacen CMC a masana'antar wanki

Detergent grade MB-CMC3: Ana amfani dashi a cikin wanki don hana datti daga sake sanyawa. Ka'idar ita ce, akwai juzu'i na electrostatic tsakanin juna tsakanin datti da aka caje mara kyau da kuma cajin kwayoyin CMC da aka tallata akan masana'anta. Bugu da kari, CMC kuma na iya kauri yadda yakamata da wanke slurry ko maganin sabulu da daidaita tsarin abun da ke ciki.

5. Aikace-aikacen CMC a cikin masana'antar man goge baki na yau da kullun

Babban aikace-aikacen: MB-CMC3 an dakatar da shi a cikin sinadarai na yau da kullun, yana hana ƙazanta daga sake yin hazo, kiyaye danshi, daidaitawa, da kauri. Yana da abũbuwan amfãni na saurin rushewa da amfani mai dacewa. Adadin kari shine 0.3% -1.0%. Man goge baki yana taka rawa na siffatawa da haɗin kai. Ta hanyar dacewa mai kyau, man goge baki ya kasance barga kuma baya raba ruwa. Gabaɗaya, shawarar da aka ba da shawarar shine 0.5-1.5%.

Shida, kwanciyar hankali na CMC manne danko akan lokaci, umarnin don amfani

1. Saboda girman nauyin kwayoyin wannan samfurin, lokacin shirya manne MB-CMC3, lokacin rushewa yana da kusan rabin sa'a fiye da na CMC na yau da kullum;

2. Saboda babban danko na manne sama da 1.2%, bai dace ba don amfani da maida hankali fiye da 1.2% lokacin da aka manne CMC. Gabaɗaya, ya fi dacewa don zaɓar manne tare da maida hankali kusan 1.0%;

3. A cikin zaɓin ƙarin rabo na CMC, ya kamata a ƙayyade bisa ga nau'in graphite, ƙayyadaddun yanki na musamman da adadin baƙar fata na carbon (wakilin gudanarwa) da aka ƙaddamar da shi, kuma babban adadin ƙarawa shine 0.5% ^ 1.0%;

4. Ana sarrafa danko na slurry a kusan 2500mPa.s, ƙaddamarwa da daidaitawa na slurry zai zama mafi kyau, wanda ya dace da daidaituwa na sutura.

Bakwai, fasali na samfur da fa'idodi

1. Yana da babban nauyin kwayoyin halitta, wanda zai iya rage yawan adadin CMC da aka kara, kuma a lokaci guda tabbatar da danko da kwanciyar hankali na slurry;

2. Adadin CMC da aka kara a cikin dabara yana raguwa da kusan 1%, wanda zai iya ƙara yawan abun ciki na abubuwa masu aiki da kuma ƙara yawan ƙimar ƙimar samfurin;


Lokacin aikawa: Janairu-05-2023
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