Usoro mmepụta na usoro ojiji nke sodium carboxymethyl cellulose (CMC)

Sodium carboxymethyl cellulose (CMC) bụ anionic, agbụ ígwè kwụ ọtọ, cellulose ether na-agbaze mmiri, ihe sitere na cellulose eke na chloroacetic acid site na mgbanwe kemịkalụ. Mmiri mmiri ya nwere ọrụ nke ịka nká, ịmepụta ihe nkiri, ijikọ, idobe mmiri, nchekwa colloidal, emulsification na nkwụsịtụ, a pụkwara iji ya dị ka flocculant, chelating agent, emulsifier, thickener, ihe na-ejide mmiri, ihe na-emepụta nha, ihe na-emepụta fim, wdg, nke a na-ejikarị eme ihe na nri, ọgwụ, ngwa eletrọnịkị, ọgwụ ahụhụ, akpụkpọ anụ, plastik, mbipụta, seramiiki, ụlọ ọrụ kemịkalụ kwa ụbọchị na ubi ndị ọzọ.

Sodium carboxymethyl cellulose bụ ihe siri ike, nke na-abụkarị ihe na-acha ntụ ntụ ma ọ bụ nke nwere eriri, nke na-acha ọcha ma ọ bụ nke na-acha odo odo, enweghị isi pụrụ iche, ọ bụ ihe kemịkalụ macromolecular, nwere ike ịgbaze mmiri nke ọma, ọ nwere ike ịgbaze na mmiri, na mmiri iji mepụta ihe ngwọta viscous nke nwere nnukwu nghọta. Enweghị ike ịgbaze na ihe ngwọta organic n'ozuzu, dị ka ethanol, ether, chloroform na benzene, mana enwere ike ịgbaze na mmiri, a na-agbaze ozugbo na mmiri na-adị nwayọ, mana ihe ngwọta mmiri ka buru ibu, ihe ngwọta mmiri ahụ nwekwara viscosity ụfọdụ. Ihe siri ike na gburugburu ebe obibi na-adịgide adịgide karịa, n'ihi na ọ nwere ụfọdụ mmịpụta mmiri na iru mmiri, na gburugburu ebe obibi kpọrọ nkụ, enwere ike ịchekwa ya ruo ogologo oge.

① Usoro mmepụta

1. Usoro mmiri

Usoro mmepụta mmiri-kọl bụ usoro mmepụta mbụ n'oge nkwadebe ụlọ ọrụ mmepụta ihe nke sodium carboxymethyl cellulose. N'ime usoro a, alkali cellulose na ihe na-eme ka etherifying na-emeghachi omume na mmiri mmiri nwere ion oxygen oxide efu, a na-ejikwa mmiri dị ka ihe na-eme mmeghachi omume na usoro mmeghachi omume, na-enweghị ihe mgbaze organic.

2. Usoro ihe mgbaze

Usoro ihe mgbaze bụ usoro ihe mgbaze organic, nke bụ usoro mmepụta nke e mepụtara site na usoro mmiri iji dochie mmiri na ihe mgbaze organic dị ka ihe mgbaze organic. Usoro nke alkali cellulose na monochloroacetic acid na ihe mgbaze organic. Dịka ọnụọgụ nke ihe mgbaze reaction si dị, enwere ike kewaa ya n'ụzọ ịgwakọta na usoro igwu mmiri slurry. Ọnụọgụ ihe mgbaze organic eji na usoro ịgwakọta dị ukwuu karịa nke usoro ịgwakọta, ọnụọgụ nke ihe mgbaze organic eji na usoro ịgwakọta bụ oke nke oke olu nke ọnụọgụ cellulose, ebe ọnụọgụ nke ihe mgbaze organic eji na usoro ịgwakọta bụ oke nke oke olu nke ọnụọgụ cellulose. Mgbe a na-akwadebe sodium carboxymethyl cellulose site na usoro igwu mmiri slurry, mmeghachi omume siri ike dị na steeti slurry ma ọ bụ nkwụsịtụ na sistemụ ahụ, yabụ a na-akpọkwa usoro igwu mmiri slurry usoro nkwụsịtụ.

3. Usoro slurry

Usoro Slurry bụ teknụzụ kachasị ọhụrụ iji mepụta sodium carboxymethyl cellulose. Usoro Slurry enweghị ike imepụta sodium carboxymethyl cellulose dị ọcha nke ukwuu, kamakwa ọ na-emepụta sodium carboxymethyl cellulose nwere ogo nnọchi dị elu na nnọchi otu. Usoro mmepụta nke usoro slurry dị ka ndị a: a na-eziga mkpụrụ owu nke e gwere ka ọ bụrụ ntụ na igwe alkali kwụ ọtọ nke nwere isopropyl alcohol, a na-etinyekwa ngwọta sodium hydroxide mgbe a na-agwakọta ya, okpomọkụ alkali dịkwa ihe dị ka 20℃. Mgbe alkalichara gasịrị, a na-etinye ihe ahụ na igwe etherifying kwụ ọtọ, a na-agbakwunye ngwọta mmanya isopropyl nke chloroacetic acid, okpomọkụ etherifying dịkwa ihe dị ka 65℃. Dịka ojiji ngwaahịa na ihe achọrọ maka ịdị mma si dị, enwere ike ịgbanwe ntinye alkali, oge alkali, ọnụọgụ nke ihe nnọchi etherifying na oge etherification na paramita usoro ndị ọzọ.

② Ngwa ngwa

1. CMC abụghị naanị ezigbo ihe na-eme ka ihe na-eme ka ihe sie ike ma na-eme ka ọ sie ike n'ihe oriri, kamakwa ọ nwere ezigbo nkwụsi ike na ịgbaze mmiri, ọ nwekwara ike ime ka ụtọ ngwaahịa ka mma ma gbasaa oge nchekwa.

2. N'ime ihe nhicha ahụ, enwere ike iji CMC mee ihe dị ka ihe na-egbochi mmebi, ọkachasị maka mmetụta hydrophobic nke ákwà eriri sịntetik na-egbochi mmebi, nke ka mma karịa eriri carboxymethyl.

3. N'ime olulu mmanụ, enwere ike iji ya chebe mmanụ. Olulu dị ka ihe na-eme ka apịtị sie ike, ihe na-ejide mmiri, ọnụọgụ nke olulu mmanụ ọ bụla bụ olulu mmiri dị omimi nke 2 ~ 3t, olulu mmiri dị omimi nke 5 ~ 6t.

4. A na-eji ya eme ihe n'ụlọ ọrụ ákwà dịka ihe e ji ekpebi nha, ihe e ji ebi akwụkwọ na ihe e ji agba agba agba, ihe e ji ebi akwụkwọ na ihe e ji eme ka ọ sie ike.

5. A na-eji ya dị ka ihe mkpuchi na-egbochi mgbanwe, ihe na-eme ka ihe na-agbaze, ihe na-agbasa, ihe na-eme ka ihe na-agbanwe agbanwe, ihe na-arapara, nwere ike ime ka akụkụ siri ike nke agba ahụ kesaa nke ọma na ihe mgbaze ahụ, ka agba ahụ ghara ịchacha ruo ogologo oge, kama ọ na-ejikwa ya na putty.

6. Dịka ihe na-eme ka calcium ion karịa sodium gluconate dị irè karịa, dịka mgbanwe cation, ikike mgbanwe ruru 1.6ml/g.

7. N'ime ụlọ ọrụ akwụkwọ eji eme nha akwụkwọ, ọ nwere ike ime ka ike akọrọ na ike mmiri nke iguzogide akwụkwọ na mmanụ, nnabata ink na iguzogide mmiri dịkwuo mma nke ukwuu.

8. Dịka hydrosol na ihe ịchọ mma, nke a na-eji dị ka ihe na-eme ka ihe sie ike na ezé ezé, usoro ọgwụgwọ ya dị ihe dị ka 5%.

Onye Mmepụta na Onye Na-ebunye Carboxymethyl Cellulose n'ogbe (CMC) | EVERBRIGHT (cnchemist.com)