Hydroxypropyl methylcellulose dị ka ihe nrapado ụlọ

Ọkwa nke gluu ihe owuwu bụ ihe na-ewute ndị ahịa.

1. Ogo nke nrapado ihe owuwu kwesịrị iburu n'uche akụrụngwa. Isi ihe mere e ji guzobe oyi akwa njikọ bụ enweghị ndakọrịta n'etiti emulsion acrylic na hydroxypropyl methylcellulose (HPMC).

2. N'ihi oge agwakọta ezughị ezu; ihe nrapado ihe na-ewu na-enwekwa nsogbu nke ihe ndị na-eme ka ọkpụkpụ na-adịghị mma. N'ime ihe mgbakwunye ihe owuwu, ọ dị mkpa iji kọfị ngwa ngwa hydroxypropyl methylcellulose (HPMC) n'ihi na HPMC na-agbasasị na mmiri ma ọ naghị agbaze n'ezie. Mgbe ihe dị ka nkeji 2 gachara, viscosity nke mmiri mmiri na-eji nwayọọ nwayọọ na-abawanye, na-emepụta ngwọta viscous colloidal na-apụta ìhè kpamkpam. Ngwaahịa na-ekpo ọkụ na-agbaze nwere ike ịgbasa ngwa ngwa n'ime mmiri esi mmiri ma pụọ ​​​​na mmiri esi mmiri mgbe ị na-ezute mmiri oyi. Mgbe ọnọdụ okpomọkụ na-adaba n'otu ọnọdụ okpomọkụ, viscosity retardation na-apụta ruo mgbe a na-emepụta ihe ngwọta viscous colloidal na-apụtachaghị ìhè. A na-atụ aro nke ukwuu iji 2-4 kg nke hydroxypropyl methylcellulose (HPMC) na nrapado ihe owuwu.

3. Ngwongwo anụ ahụ nke hydroxypropyl methylcellulose (HPMC) na ihe ndị na-ewu ụlọ na-akwụsi ike, mmetụta mgbochi mildew dị mma nke ukwuu, ọ gaghịkwa emebi ya site na mgbanwe nke pH uru. Enwere ike itinye viscosity n'etiti 100,000 s na 200,000 s, mana na mmepụta Mgbe a na-emepụta ihe, ka viscosity dị elu, ka mma. Viscosity na-agbanwe agbanwe na ike mkpakọ nke nrapado. Nke dị elu nke viscosity, na-ebelata ike mkpakọ. N'ozuzu, viscosity bụ 100,000s.

Ugbu a na ụlọ ọrụ ịchọ mma, ngwa hydroxypropyl methylcellulose na-akawanye njọ.

Kedu ka esi emegharị ọnụọgụ a? Were gị na:

Ngwa ngwa gwakọta CMC na mmiri iji mee ihe nrapado dị ka tapawa ma wepụta ya. Mgbe ị na-etinye mado CMC, jiri igwekota tinye ntakịrị mmiri oyi na ite ihe. Mgbe a malitere igwekota, jiri nwayọọ nwayọọ na ọbụna fesa carboxymethylcellulose n'ime tank nke mgwa ihe, ma nọgide na-akpali akpali iji jikọta carboxymethylcellulose na mmiri ma gbazee kpamkpam carboxymethylcellulose. Mgbe ị na-agbaze osisi tube, ọ na-adịkarị mkpa ịgbasa ya nke ọma ma nọgide na-akpali akpali ka mma "na-egbochi nhazi na nhazi nke tube tube mgbe ọ na-ezute mmiri, belata nsogbu nke mgbasa tube tube" ma melite solubility nke tube tube. . Ọnụego mgbasa kọmitii nchịkwa.

Oge ngwakọta dị iche na oge ọ na-ewe maka CMC kpamkpam. Ndị a bụ nkọwa abụọ. N'ozuzu, oge ngwakọta dị mkpụmkpụ karịa oge maka mgbasa nke CMC zuru ezu, dabere na ọnọdụ ahụ akọwapụtara. A na-ekpebi oge ngwakọta ahụ dabere na ụkpụrụ data static. Mgbe CMC na-agbasasị n'otu n'otu na mmiri na-enweghị ihe mgbagwoju anya doro anya, a na-akwụsị ịgwakọta ka CMC na mmiri banye n'ime ibe ha.

Enwere ọtụtụ ihe kpatara oge achọrọ iji gbazee CMC kpamkpam:

(1) CMC na mmiri na-ejikọta kpamkpam, ọ dịghịkwa ihe nkewa nke mmiri siri ike n'etiti ha;

(2) Ngwakọta ahụ bụ otu ma dị nro, na elu dị nro na mmiri;

(3) Mgbe agwakọtachara, tapawa ahụ enweghị agba na nke doro anya, ọ nweghịkwa ihe dị na tapawa ahụ. Ọ na-ewe awa 10 ruo 20 site na mgbe a na-etinye CMC n'ime ngwakọta nke tankị na mmiri ruo mgbe agbazere ya kpamkpam.