Menene bambanci tsakanin aikin methyl cellulose ether da lignin fiber

Menene bambanci tsakanin aikin methyl cellulose ether da lignin fiber

Amsa: Ana nuna kwatancen aikin tsakanin methyl cellulose ether da lignin fiber a cikin tebur

 Kwatancen aiki tsakanin methyl cellulose ether da lignin fiber

Menene ya kamata a kula da lokacin amfani da methyl cellulose da carboxymethyl cellulose?

Amsa: (1) Lokacin amfani da ruwan zafi don narkar da cellulose, dole ne a sanyaya sosai kafin amfani. Yanayin zafin jiki da ake buƙata don cikakken rushewa da madaidaicin bayyananniyar ya dogara da nau'in cellulose.

(2) Zazzabi da ake buƙata don samun isasshen danko

Carboxymethylcellulose≤25℃, methylcellulose≤20℃

(3)A hankali azuba ruwan cellulose a hankali sannan a jujjuya har sai an jika dukkan barbashi, sannan a jujjuya har sai duk maganin cellulose ya fito fili kuma ya bayyana. Kada a zuba ruwa kai tsaye a cikin cellulose, kuma kada kai tsaye ƙara adadin cellulose mai yawa wanda aka damp kuma ya zama dunƙule ko ƙwallo a cikin akwati.

(4) Kafin a jika foda cellulose tare da ruwa, kada ku ƙara abubuwan alkaline a cikin cakuda, amma bayan tarwatsawa da jiƙa, za a iya ƙara ƙaramin adadin alkaline mai ruwa mai ruwa (pH8 ~ 10) don hanzarta rushewa. Wadanda za a iya amfani da su sune: sodium hydroxide aqueous solution, sodium carbonate aqueous solution, sodium bicarbonate aqueous solution, ruwan lemun tsami, ruwan ammonia da kwayoyin ammonia, da dai sauransu.

(5) The surface-bi da cellulose ether yana da mafi kyau dispersibility a cikin ruwan sanyi. Idan an ƙara shi kai tsaye zuwa maganin alkaline, maganin saman zai kasa kuma ya haifar da kumburi, don haka ya kamata a kara kulawa.

Menene kaddarorin methylcellulose?

Amsa: (1) Idan aka yi zafi sama da digiri 200, sai ya narke ya rube. Abun cikin ash yana kusan 0.5% lokacin ƙonewa, kuma yana da tsaka tsaki lokacin da aka yi shi da ruwa. Amma ga danko, ya dogara da matakin polymerization.

(2) Solubility a cikin ruwa ya bambanta da yanayin zafi, babban zafin jiki yana da ƙananan solubility, ƙananan zafin jiki yana da babban solubility.

(3) Ana iya narkar da shi a cikin cakuda ruwa da abubuwan kaushi, irin su methanol, ethanol, ethylene glycol, glycerin da acetone.

(4) Lokacin da akwai gishirin ƙarfe ko Organic electrolytes a cikin maganin ruwa mai ruwa, har yanzu maganin zai iya zama barga. Lokacin da aka ƙara electrolyte a cikin adadi mai yawa, gel ko hazo zai faru.

(5)Yana da aikin saman. Saboda kasancewar kungiyoyin hydrophilic da hydrophobic a cikin kwayoyinsa, yana da ayyuka na emulsification, colloid mai kariya da kwanciyar hankali na lokaci.

(6)Zafi mai zafi. Lokacin da maganin ruwa ya tashi zuwa wani zafin jiki (sama da zazzabi na gel), zai zama turbid har sai ya zama gels ko hazo, yana sa maganin ya rasa danko, amma zai iya komawa yanayin asali bayan sanyaya. Yanayin zafin jiki wanda gelation da hazo ke faruwa ya dogara da nau'in samfurin, ƙaddamar da bayani, da kuma yawan dumama.

(7) pH yana da ƙarfi. Dankowar ruwa mai ruwa ba shi da sauƙin shafar acid da alkali. Bayan ƙara alkali mai yawa, ba tare da la'akari da yawan zafin jiki ko ƙananan zafin jiki ba, ba zai haifar da bazuwa ko rarraba sarkar ba.

(8) Bayan da bayani ya bushe a kan surface, zai iya samar da wani m, m da kuma na roba fim, wanda shi ne resistant zuwa kwayoyin kaushi, mai da daban-daban mai. Ba ya juya rawaya ko mai laushi lokacin da aka fallasa shi ga haske, kuma ana iya sake narkar da shi cikin ruwa. Idan an ƙara formaldehyde a cikin maganin ko bayan an yi masa magani tare da formaldehyde, fim ɗin ba zai iya narkewa a cikin ruwa ba, amma har yanzu yana iya fadada wani yanki.

(9)Kauri. Yana iya kauri ruwa da tsarin marasa ruwa, kuma yana da kyakkyawan aikin rigakafin sag.

(10) Dankowa. Maganin sa na ruwa yana da haɗin kai mai ƙarfi, wanda zai iya inganta haɗin gwiwar siminti, gypsum, fenti, pigment, fuskar bangon waya, da dai sauransu.

(11)Dakatarwa. Ana iya amfani da shi don sarrafa coagulation da hazo na m barbashi.

(12)Kare colloid kuma inganta kwanciyar hankali. Yana iya hana tarawa da coagulation na droplets da pigments, da kuma yadda ya kamata hana hazo.

(13)Tsarin ruwa. Maganin ruwa mai ruwa yana da babban danko. Lokacin da aka ƙara zuwa turmi, zai iya kula da babban abun ciki na ruwa, wanda zai iya hana yawan sha ruwa ta hanyar substrate (kamar tubali, kankare, da dai sauransu) kuma yana rage yawan fitar ruwa.

(14) Kamar sauran maganin colloidal, an ƙarfafa ta tannins, furotin precipitants, silicates, carbonates, da dai sauransu.

(15) Ana iya haxa shi da carboxymethyl cellulose a kowane rabo don samun sakamako na musamman.

(16) Ayyukan ajiya na maganin yana da kyau. Idan ana iya kiyaye shi da tsabta yayin shirye-shiryen da adanawa, ana iya adana shi har tsawon makonni da yawa ba tare da lalacewa ba.

NOTE: Methylcellulose ba shine matsakaicin girma ga ƙananan ƙwayoyin cuta ba, amma idan ya zama gurɓata da ƙananan ƙwayoyin cuta, ba zai hana su haɓaka ba. kuma danko zai ragu a wannan lokacin. Hakanan zai iya haifar da rarrabuwa a cikin ma'aikatan oxidizing, musamman a cikin maganin alkaline.

Menene babban tasirin carboxymethyl cellulose (CMC) akan gypsum?

Amsa: Carboxymethyl cellulose (CMC) yafi taka rawa wajen kauri da kuma m, kuma tasirin riƙe ruwa ba a bayyane yake ba. Idan aka yi amfani da shi a hade tare da ruwa mai kula da ruwa, zai iya yin kauri da kuma kauri gypsum slurry da kuma inganta aikin yi, amma carboxymethyl cellulose The tushe cellulose zai jinkirta saitin na gypsum, ko ma ba ya karfafa, da kuma ƙarfi zai ragu sosai. , don haka adadin amfani ya kamata a kula sosai.