Okwu Mmalite: Cellulose ether (CelluloseEther) bụ nke cellulose mere site na etherification mmeghachi omume nke otu ma ọ bụ ọtụtụ etherification agents na akọrọ egweri.Dị ka usoro kemịkalụ dị iche iche nke ether nọchiri anya, ethers cellulose nwere ike kewaa n'ime anionic, cationic na nonionic ethers.Ionic cellulose ethers tumadi gụnyere carboxymethyl cellulose ether (CMC);Ethers cellulose na-abụghị ionic gụnyere methyl cellulose ether (MC), hydroxypropyl methyl cellulose ether (HPMC) na hydroxyethyl cellulose ether.Chlorine ether (HC) na ndị ọzọ.A na-ekewa ethers na-abụghị ionic n'ime ethers nke mmiri na-agbaze na mmanụ na-edozi mmanụ, na ethers na-abụghị nke ionic na-ejikarị eme ihe na ngwa ngwa.N'ebe ọnụnọ nke calcium ion, ionic cellulose ether adịghị eguzosi ike, n'ihi ya, a na-ejikarị ya eme ihe na ngwa ngwa agwakọta akọrọ nke na-eji ciment, lime slaked, wdg dị ka ihe simenti.Nonionic mmiri-soluble cellulose ethers na-eji ọtụtụ ebe na ụlọ ọrụ ụlọ ọrụ n'ihi na ha nkwusioru nkwụsi ike na njide mmiri.
Dị ka ihe dị iche iche etherification na-eji na etherification usoro, cellulose ether ngwaahịa gụnyere methyl cellulose, hydroxyethyl cellulose, hydroxyethyl methyl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, Ethyl cellulose, benzyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxypropyl, benzyl cellulose na benzyl cellulose. phenyl cellulose.
Cellulose ethers eji na ngwa agha n'ozuzu gụnyere methyl cellulose ether (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose ether (HEMC) na hydroxyethyl cellulose ether (HEMC) N'ime ha, HPMC na HEMC bụ ndị kasị eji.
1. Chemical Njirimara nke cellulose ethers
Eter cellulose nke ọ bụla nwere ntọala bụ isi nke cellulose - usoro anhydroglucose.N'ime usoro nke ịmepụta cellulose ether, a na-ebu ụzọ kpoo eriri cellulose na ngwọta alkaline, wee mesoo ya na onye na-emepụta ihe.A na-asachapụ ngwaahịa mmeghachi omume fibrous ma kporie ya ka ọ bụrụ ntụ ntụ nke nwere ezigbo mma.
N'ime usoro mmepụta nke MC, naanị methyl chloride na-eji dị ka onye na-ahụ maka etherification;na mgbakwunye na methyl chloride, a na-ejikwa propylene oxide nweta otu ndị nnọchi anya hydroxypropyl na mmepụta nke HPMC.Dị iche iche cellulose ethers nwere dị iche iche methyl na hydroxypropyl nnọchi ratios, nke na-emetụta organic ndakọrịta na thermal gelation okpomọkụ nke cellulose ether ngwọta.
Enwere ike igosipụta ọnụọgụ ndị nọchiri anya otu anhydroglucose structural unit nke cellulose site na pasentị uka ma ọ bụ nkezi ọnụ ọgụgụ nke ndị nọchiri anya otu (ya bụ, ogo nke nnọchi DS—Degree of Substitution).Ọnụ ọgụgụ nke ndị nnọchi anya na-ekpebi njirimara nke ngwaahịa ether cellulose.Mmetụta nke nkezi ogo nke nnọchi na solubility nke etherified ngwaahịa bụ ndị a:
(1) Ngwaahịa etherification na obere ọkwa nke nnọchi na-adị mfe soluble na lye;
(2) Etherification ngwaahịa na a ubé elu ogo nke nnọchi na-adị mfe soluble na mmiri;
(3) Etherification ngwaahịa na a elu ogo nke nnọchi na-adị mfe soluble na pola organic solvents;
(4) Ngwaahịa etherification nwere ogo dị elu nke nnọchi na-adị mfe soluble na ihe mgbaze organic na-abụghị polar.
2. Ngwa ndapụta nke Cellulose Ether
Cellulose ether bụ polymer na-abụghị ionic semi-synthetic polymer, nke bụ mmiri-soluble na ihe mgbaze-soluble.Ọ nwere mmetụta dị iche iche na ụlọ ọrụ dị iche iche.Dịka ọmụmaatụ, n'ihe eji arụ ụlọ kemịkalụ, ọ nwere mmetụta ndị a jikọtara ọnụ:
① Onye na-ejigide mmiri
②Ọkpụrụkpụ
③Ịkwalite ọkwa
④ Nhazi ihe nkiri
⑤ Ihe nkpuchi
Na ụlọ ọrụ polyvinyl chloride, ọ bụ emulsifier na onye na-ekesa;na ụlọ ọrụ na-emepụta ọgwụ, ọ bụ ihe nkedo na ngwa ngwa na-achịkwa ihe ntọhapụ, wdg N'ihi na cellulose nwere mmetụta dị iche iche nke mgbagwoju anya, ngwa ya Akụ ahụ bụkwa nke kachasị ukwuu.Ihe na-esonụ na-elekwasị anya na ojiji na ọrụ nke cellulose ether dị iche iche ihe ụlọ.
(1) Na agba latex:
N'ime ụlọ ọrụ agba latex, ịhọrọ hydroxyethyl cellulose, nkọwapụta n'ozuzu nke viscosity nhata bụ RT30000-50000cps, nke kwekọrọ na nkọwapụta nke HBR250, na ntinye ntụaka bụ n'ozuzu banyere 1.5‰-2‰.Isi ọrụ nke hydroxyethyl na agba latex bụ ịgbatị, gbochie gelation nke pigmenti, nyere aka mgbasa nke pigmenti, nkwụsi ike nke latex, na ịbawanye viscosity nke ihe ndị ahụ, nke na-enye aka n'ịkwalite arụmọrụ nke ihe owuwu ahụ: Hydroxyethyl cellulose dị mfe iji.Enwere ike ịgbaze ya na mmiri oyi na mmiri ọkụ, yana uru pH adịghị emetụta ya.Enwere ike iji ya na udo nke obi mgbe uru PI dị n'etiti 2 na 12. Ụzọ ndị a na-esi eme ihe bụ ndị a: I. Na-agbakwụnye ozugbo na mmepụta: Maka usoro a, a ga-ahọrọ ụdị oge a na-egbu oge hydroxyethyl cellulose, na hydroxyethyl cellulose na. a na-eji oge mgbasa nke ihe karịrị nkeji iri atọ.Usoro ndị a dị ka ndị a: ① Tinye ya n'ime akpa nke nwere ihe mkpali dị elu.Quantitative pure water ② Malite na-akpali akpali na-aga n'ihu na obere ọsọ, ma n'otu oge ahụ jiri nwayọọ nwayọọ tinye hydroxyethyl n'ime ngwọta nke ọma ③ Gaa n'ihu na-akpali ruo mgbe a na-agbanye ihe niile granular ④ Tinye mgbakwunye ndị ọzọ na ihe mgbakwunye alkaline, wdg. , wee tinye ihe ndị ọzọ na usoro ahụ, na-egweri ruo mgbe ngwaahịa agwụla.ⅡEjiri nne mmanya na-aba n'anya mee ihe mgbe e mesịrị: Usoro a nwere ike ịhọrọ cellulose ozugbo, nke nwere mmetụta mgbochi mildew.Uru nke usoro a bụ na ọ nwere mgbanwe dị ukwuu ma nwee ike itinye ya ozugbo na agba latex.Usoro nkwadebe bụ otu usoro ①-④.Ⅲ.Kwadebe porridge maka ojiji ọzọ: Ebe ọ bụ na ihe ndị na-emepụta ihe na-emepụta ihe na-adịghị mma bụ ihe ngwọta na-adịghị mma (na-adịghị edozi) maka hydroxyethyl, ihe mgbaze ndị a nwere ike iji dozie porridge.Ihe mgbaze ndị a na-ejikarị eme ihe bụ mmiri mmiri organic n'ụdị agba agba, dị ka ethylene glycol, propylene glycol, na ndị na-emepụta ihe nkiri (dị ka diethylene glycol butyl acetate).Enwere ike ịgbakwunye porridge hydroxyethyl cellulose na agba.Gaa n'ihu na-akpali akpali ruo mgbe agbazere kpamkpam.
(2) Na mgbidi scraping putty:
Ka ọ dị ugbu a, n'ọtụtụ obodo dị na mba m, putty na-egbochi mmiri na nke na-eguzogide gburugburu ebe obibi enyi na enyi ejirila ndị mmadụ kpọrọ ihe.A na-emepụta ya site na mmeghachi omume acetal nke mmanya vinyl na formaldehyde.Ya mere, ndị mmadụ na-eji nwayọọ nwayọọ kpochapụ ihe a, a na-eji ngwaahịa cellulose ether eme ihe iji dochie ihe a.Nke ahụ bụ, maka mmepe nke ihe eji ewu ụlọ na gburugburu ebe obibi, cellulose bụ naanị ihe ugbu a.N'ime mmiri na-eguzogide mmiri, a na-ekewa ya n'ime ụdị abụọ: akọrọ ntụ ntụ na ntụ ntụ.N'ime ụdị putty abụọ a, methyl cellulose gbanwere na hydroxypropyl methyl kwesịrị ịhọrọ.Nkọwapụta viscosity bụ n'ozuzu n'etiti 30000-60000cps.Ọrụ bụ isi nke cellulose na putty bụ njide mmiri, njikọta na mmanu mmanu.Ebe ọ bụ na putty usoro nke dị iche iche na-emepụta dị iche iche, ụfọdụ ndị isi awọ calcium, ìhè calcium, ọcha ciment, wdg, na ụfọdụ bụ gypsum ntụ ntụ, isi awọ calcium, ìhè calcium, wdg, otú nkọwa, viscosity na penetration nke cellulose na. usoro abụọ dịkwa iche iche.Ọnụ ego agbakwunyere bụ ihe dịka 2‰-3‰.Na-ewu mgbidi scraping putty, ebe ọ bụ na isi elu nke mgbidi nwere ụfọdụ ogo nke mmiri absorption (ọnụego mmịpụta mmiri nke brik mgbidi bụ 13%, na mmiri absorption ọnụego nke ihe bụ 3-5%). jikọtara ya na evaporation nke n'èzí, ma ọ bụrụ na putty na-efunahụ mmiri ngwa ngwa , Ọ ga-eduga na mgbawa ma ọ bụ wepụ ntụ ntụ, nke ga-ebelata ike nke putty.Ya mere, ịgbakwunye cellulose ether ga-edozi nsogbu a.Ma àgwà nke ndochi, karịsịa àgwà calcium ash dịkwa oke mkpa.N'ihi nnukwu viscosity nke cellulose, a na-eme ka ihe na-egbuke egbuke nke putty dịkwuo mma, a na-ezerekwa ihe na-eme ka ọ dị njọ n'oge a na-ewu ụlọ, ọ na-adịkwa mma ma na-azọpụta ọrụ mgbe a kpochapụrụ ya.Ọ ka mma ịgbakwunye cellulose ether na ntụ ntụ ntụ.Mmepụta ya na ojiji ya na-adaba adaba.Enwere ike ịgwakọta ihe ndochi na ihe mgbakwunye na ntụ ntụ akọrọ.
(3) Ngwa agha ihe eji eme ihe:
N'ime ngwa agha siri ike, iji nweta ike kachasị, ciment ga-abụ mmiri zuru oke.Karịsịa n'oge okpomọkụ na-ewu ụlọ, ihe mgbochi mmiri na-atụfu mmiri ngwa ngwa, a na-eji usoro nke hydration zuru ezu na-echekwa ma fesa mmiri.Akwụsị ihe onwunwe na arụ ọrụ na-adịghị mma, isi ihe bụ na mmiri dị naanị n'elu, na hydration dị n'ime ya ka na-ezughị ezu, ya mere ihe ngwọta maka nsogbu a bụ ịgbakwunye ihe asatọ na-ejigide mmiri na mmiri mmiri, n'ozuzu họrọ hydroxypropyl methyl. ma ọ bụ methyl Cellulose, nkọwapụta viscosity dị n'etiti 20000-60000cps, na mgbakwunye ego bụ 2%-3%.Enwere ike ịbawanye ọnụego njide mmiri karịa 85%.Usoro eji eme ihe na ngwa ngwa bụ ịgwakọta ntụ ntụ akọrọ nke ọma ma wụsa ya na mmiri.
(4) Na plasta gypsum, gypsum jikọtara, gypsum caulking:
Site na mmepe ngwa ngwa nke ụlọ ọrụ ihe owuwu, ọchịchọ ndị mmadụ maka ihe owuwu ụlọ ọhụrụ na-abawanye kwa ụbọchị.N'ihi mmụba nke ndị mmadụ na-amata na nchekwa gburugburu ebe obibi na ọganihu na-aga n'ihu nke ịrụ ọrụ nke ọma, ngwaahịa gypsum cimentity etolitela ngwa ngwa.Ka ọ dị ugbu a, ngwaahịa gypsum a na-ahụkarị bụ plasta gypsum, gypsum bonded, gypsum inlaid, na nrapado tile.Plastering gypsum bụ ihe nkedo dị elu maka mgbidi dị n'ime na ụlọ elu.N'elu mgbidi e ji plasta na ya dị mma ma dị nro.Ihe nkwụnye ọkụ ọhụrụ nke ụlọ ọhụrụ bụ ihe na-egbuke egbuke nke gypsum dị ka ihe ndabere na ihe mgbakwunye dị iche iche.Ọ dị mma maka njikọta n'etiti ihe mgbidi ụlọ inorganic dị iche iche.Ọ bụ ihe na-adịghị egbu egbu, Odorless, ike mmalite na ngwa ngwa ngwa ngwa, njikọ siri ike na njirimara ndị ọzọ, ọ bụ ihe na-akwado maka ụlọ mbadamba na ngọngọ mgbidi;gypsum caulking agent bụ ihe nkpuchi dị n'etiti mbadamba gypsum na ihe ndozi maka mgbidi na mgbawa.Ngwaahịa gypsum ndị a nwere usoro ọrụ dị iche iche.Na mgbakwunye na ọrụ gypsum na ihe ndị yiri ya, isi okwu bụ na ihe mgbakwunye cellulose ether agbakwunyere na-arụ ọrụ na-eduga.Ebe ọ bụ na gypsum na-ekewa n'ime gypsum anhydrous na hemihydrate gypsum, gypsum dị iche iche nwere mmetụta dị iche iche na-arụ ọrụ nke ngwaahịa ahụ, ya mere mgbochi, njide mmiri na retardation na-ekpebi àgwà nke ihe owuwu ụlọ gypsum.Nsogbu nkịtị nke ihe ndị a bụ oghere na mgbawa, na ike mbụ enweghị ike iru.Iji dozie nsogbu a, ọ bụ ịhọrọ ụdị cellulose na usoro eji eme ihe nke retarder.N'akụkụ a, a na-ahọrọkarị methyl ma ọ bụ hydroxypropyl methyl 30000.-60000cps, ego mgbakwunye bụ 1.5% -2%.N'ime ha, cellulose na-elekwasị anya na njide mmiri na nkwụsị mmanụ.Otú ọ dị, ọ gaghị ekwe omume ịdabere na cellulose ether dị ka onye na-azụ azụ, ọ dịkwa mkpa ịgbakwunye citric acid retarder iji jikọta ma jiri ya mee ihe na-enweghị emetụta ike mbụ.Njide mmiri n'ozuzu na-ezo aka na mmiri ole a ga-efunahụ n'onwe ya na-enweghị mmịnye mmiri dị na mpụga.Ọ bụrụ na mgbidi ahụ dị oke nkụ, mmịpụta mmiri na ikuku ikuku dị n'elu ala ga-eme ka ihe ahụ na-efunahụ mmiri ngwa ngwa, oghere na mgbawa ga-emekwa.A na-ejikọta usoro eji eme ihe na ntụ ntụ.Ọ bụrụ na ị kwadebere ngwọta, biko rụtụ aka na usoro nkwadebe nke ngwọta.
(5) Igwe mkpuchi ọkụ
Mgbochi mkpuchi bụ ụdị ọhụrụ nke ihe mkpuchi mgbidi dị n'ime ime na mpaghara ugwu.Ọ bụ ihe mgbidi na-emepụta site na ihe mkpuchi, ngwa agha na ihe nkedo.N'ime ihe a, cellulose na-arụ ọrụ dị mkpa n'ịkọwa na ịba ụba ike.N'ozuzu, họrọ methyl cellulose na elu viscosity (banyere 10000eps), usoro onunu ogwu bụ n'ozuzu n'etiti 2 ‰-3‰), na usoro ojiji bụ akọrọ ntụ ntụ ịgwakọta.
(6) onye ọrụ interface
Họrọ HPNC 20000cps dị ka onye na-ahụ maka interface, họrọ 60000cps ma ọ bụ karịa dị ka nrapado tile, ma jiri thickener dị ka onye na-ahụ maka interface, nke nwere ike imeziwanye ike nkwụsị na ike mgbochi akụ.A na-eji ya dị ka ihe na-ejigide mmiri na njikọ nke taịlị iji gbochie taịl nile ịza mmiri ngwa ngwa ma daa.
3. Industry yinye ọnọdụ
(1) Ụlọ ọrụ dị elu
Ihe ndị bụ isi achọrọ maka mmepụta cellulose ether gụnyere owu a nụchara anụcha (ma ọ bụ pulp osisi) na ụfọdụ ihe mgbaze kemịkalụ, dị ka propylene oxide, methyl chloride, mmiri mmiri caustic soda, caustic soda, ethylene oxide, toluene na ihe enyemaka ndị ọzọ.Ụlọ ọrụ ụlọ ọrụ dị elu nke ụlọ ọrụ a gụnyere owu a nụchara anụcha, ụlọ ọrụ mmepụta osisi pulp na ụfọdụ ụlọ ọrụ kemịkal.Mgbanwe ọnụahịa nke isi ihe ndị a kpọtụrụ aha n'elu ga-enwe mmetụta dị iche iche na ọnụ ahịa mmepụta na ọnụahịa ire ere nke cellulose ether.
Ọnụ nke owu a nụchara anụcha dị oke elu.N'iji ihe eji eme ụlọ cellulose ether dị ka ihe atụ, n'oge akụkọ, ọnụ ahịa owu a nụchara anụcha ruru 31.74%, 28.50%, 26.59% na 26.90% nke ọnụ ahịa ihe eji ewu ụlọ ọkwa cellulose ether n'otu n'otu.Mgbanwe ọnụahịa nke owu a nụchara anụcha ga-emetụta ọnụ ahịa mmepụta nke ether cellulose.Isi akụrụngwa maka imepụta owu a nụchara anụcha bụ akwa akwa.Nkịta owu bụ otu n'ime ihe ndị a na-emepụta n'usoro mmepụta owu, nke a na-ejikarị emepụta pulp owu, owu a nụchara anụcha, nitrocellulose na ngwaahịa ndị ọzọ.Uru ojiji na ojiji nke litter owu na owu dị nnọọ iche, na ọnụ ahịa ya doro anya na ọ dị ala karịa nke owu, mana ọ nwere njikọ ụfọdụ na mgbanwe ọnụahịa nke owu.Mgbanwe dị na ọnụ ahịa akwa owu na-emetụta ọnụ ahịa owu a nụchara anụcha.
Mgbanwe dị nkọ na ọnụahịa nke owu a nụchara anụcha ga-enwe mmetụta dị iche iche na njikwa ego mmepụta, ọnụahịa ngwaahịa na uru nke ụlọ ọrụ na ụlọ ọrụ a.Mgbe ọnụ ahịa owu a nụchara anụcha dị elu ma ọnụ ahịa osisi pulp dị ọnụ ala, iji belata ọnụ ahịa, a pụrụ iji ihe mgbakwunye osisi dochie anya na mgbakwunye maka owu a nụchara anụcha, tumadi maka mmepụta cellulose ethers nwere obere viscosity dị ka. ọgwụ na nri ọkwa cellulose ethers.Dị ka data sitere na webụsaịtị nke National Bureau of Statistics si kwuo, na 2013, ebe a na-akụ owu nke obodo m bụ hectare 4.35, na mmepụta owu nke mba ahụ bụ nde tọn 6.31.Dị ka ọnụ ọgụgụ si na China Cellulose Industry Association si kwuo, na 2014, ngụkọta mmepụta nke owu a nụchara anụcha nke ndị isi ụlọ na-emepụta owu a nụchara anụcha bụ tọn 332,000, na-ebubata ngwa ngwa dị ukwuu.
Isi akụrụngwa maka imepụta akụrụngwa kemịkalụ graphite bụ ígwè na graphite carbon.Ọnụ ego nke ígwè na graphite carbon na-akwụ ụgwọ maka oke dị elu nke ọnụ ahịa mmepụta nke akụrụngwa kemịkalụ graphite.Mgbanwe ọnụahịa nke akụrụngwa ndị a ga-enwe mmetụta ụfọdụ na ọnụ ahịa mmepụta na ọnụahịa ire nke akụrụngwa kemịkalụ graphite.
(2) Ụlọ ọrụ mgbada nke cellulose ether
Dị ka "ụlọ ọrụ monosodium glutamate", cellulose ether nwere ọnụ ọgụgụ dị ala nke cellulose ether ma nwee ọtụtụ ngwa ngwa.Ụlọ ọrụ ndị dị n'okpuru ala na-agbasasị n'ụdị ndụ niile na akụ na ụba mba.
Dị ka ọ na-adịkarị, ụlọ ọrụ ihe owuwu nke ala na ụlọ ọrụ ụlọ ga-enwe mmetụta ụfọdụ na ọnụ ọgụgụ uto nke ihe a na-achọ maka ụlọ ọkwa cellulose ether.Mgbe ụlọ ọrụ ihe owuwu ụlọ na ụlọ ọrụ ụlọ na-eto ngwa ngwa, ahịa ụlọ na-achọ ụlọ maka ihe eji arụ ụlọ cellulose ether na-eto ngwa ngwa.Mgbe mmụba nke ụlọ ọrụ ihe owuwu ụlọ na ụlọ ọrụ ụlọ na-ebelata, ọnụ ọgụgụ uto nke ihe eji arụ ụlọ cellulose ether n'ahịa ụlọ ga-akwụsịlata, nke ga-eme ka asọmpi na ụlọ ọrụ a dịkwuo elu ma mee ka usoro ndụ nke ndụ dịkwuo elu. kacha mma n'etiti ụlọ ọrụ na ụlọ ọrụ a.
Ebe ọ bụ na 2012, n'ọnọdụ nke nkwụsị nke ụlọ ọrụ ihe owuwu ụlọ na ụlọ ọrụ ụlọ, ọchịchọ maka ịmepụta ihe ụlọ cellulose ether na ụlọ ahịa adịghị agbanwe agbanwe.Isi ihe kpatara ya bụ: 1. Ngụkọta ọnụ ọgụgụ nke ụlọ ọrụ ihe owuwu ụlọ na ụlọ ọrụ ụlọ buru ibu, na mkpokọta ahịa ahịa dị oke ibu;isi n'ji ahịa nke ụlọ ihe ọkwa cellulose ether na-eji nwayọọ nwayọọ na-agbasa site na akụ na ụba mepere emepe mpaghara na mbụ na nke abụọ-tier obodo na Central na Western mpaghara na nke atọ n'obodo ukwu, anụ ụlọ na-achọ ibu ohere na ohere mgbasa;2. Ọnụ ego nke cellulose ether agbakwunyere na-eme ka ọnụ ọgụgụ dị ala nke ọnụ ahịa ụlọ.Ọnụ ego nke otu onye na-azụ ahịa na-eji dị ntakịrị, ndị ahịa na-agbasasịkwa, nke na-enwekarị ọchịchọ siri ike.Ọnụ ego a na-achọ n'ahịa dị n'okpuru ala bụ ihe kwụsiri ike;3. Mgbanwe nke ọnụ ahịa ahịa bụ ihe dị mkpa na-emetụta mgbanwe nhazi nke ihe eji arụ ụlọ cellulose ether.Ebe ọ bụ na 2012, ndị na-ere ahịa nke ụlọ ihe onwunwe ọkwa cellulose ether adalata nke ukwuu, nke mere ka a nnukwu dobe na price nke n'etiti-na-elu-ọgwụgwụ ngwaahịa ma dọtakwuo ndị ahịa ịzụta na họrọ , na-amụba ọchịchọ nke etiti-to. -elu-ọgwụgwụ ngwaahịa, na squeezing ahịa ina na price ohere maka nkịtị ụdị.
Ogo nke mmepe nke ụlọ ọrụ na-emepụta ọgwụ na ọnụ ọgụgụ na-eto eto nke ụlọ ọrụ na-emepụta ọgwụ ga-emetụta ọchịchọ maka cellulose ether ọkwa ọgwụ.Ọganihu nke ụkpụrụ ibi ndụ ndị mmadụ na ụlọ ọrụ nri mepere emepe na-eme ka ahịa ahịa chọrọ cellulose ether ọkwa nri.
Oge nzipu: Jan-31-2023