Intshayelelo: I-Cellulose ether (i-CelluloseEther) yenziwe nge-cellulose ngokusebenzisa i-etherification reaction ye-etherification enye okanye ezininzi kunye nokugaya okomileyo. Ngokweendlela ezahlukeneyo zeekhemikhali ze-ether substituents, i-cellulose ethers inokwahlulwa ibe yi-anionic, cationic kunye ne-nonionic ethers. Ionic cellulose ethers ikakhulu ibandakanya carboxymethyl cellulose ether (CMC); i-non-ionic cellulose ethers ikakhulu ibandakanya i-methyl cellulose ether (MC), i-hydroxypropyl methyl cellulose ether (HPMC) kunye ne-hydroxyethyl cellulose ether. I-chlorine ether (HC) kunye nokunye. Ii-ethers ezingenayo i-ionic zahlulwe zibe zii-ethers ezinyibilikayo emanzini kunye ne-oyile-ethers e-soluble, kunye ne-non-ionic e-soluble ethers zisetyenziswa kakhulu kwiimveliso zodaka. Xa kukho i-calcium ions, i-ionic cellulose ether ayizinzile, ngoko ke ayifane isetyenziswe kwiimveliso zodaka ezixubeneyo ezisebenzisa i-samente, i-lime ye-slaked, njl. njengezinto zokumisa. I-ethers ye-cellulose e-soluble e-nonionic yamanzi isetyenziswa ngokubanzi kwishishini lezinto zokwakha ngenxa yokuzinza kwazo kunye nokugcinwa kwamanzi.
Ngokweearhente ezahlukeneyo ze-etherification ezisetyenziswa kwinkqubo ye-etherification, iimveliso ze-cellulose ether ziquka i-methyl cellulose, i-hydroxyethyl cellulose, i-hydroxyethyl methyl cellulose, i-cyanoethyl cellulose, i-carboxymethyl cellulose, i-cellulose ye-Ethyl, i-benzyl cellulose, i-carboxymethyl hydroxyethyl cellulose, i-hydroxyethyl cellulose phenyl cellulose.
I-cellulose ethers esetyenziswa kumdaka ngokubanzi ibandakanya i-methyl cellulose ether (MC), i-hydroxypropyl methyl cellulose (HPMC), i-hydroxyethyl methyl cellulose ether (HEMC) kunye ne-hydroxyethyl cellulose ether (HEMC) Phakathi kwabo, i-HPMC kunye ne-HEMC zezona zisetyenziswa kakhulu.
1. Iimpawu zekhemikhali ze-cellulose ethers
I-cellulose ether nganye inesiseko se-cellulose—isakhiwo se-anhydroglucose. Kwinkqubo yokuvelisa i-cellulose ether, i-fiber cellulose iqala ukufudumeza kwisisombululo se-alkali, kwaye iphathwa nge-etherifying agent. Imveliso ye-fibrous reaction ihlanjululwa kwaye icolile ukwenza umgubo ofanayo kunye nokucolwa okuthile.
Kwinkqubo yokuvelisa i-MC, kuphela i-methyl chloride isetyenziswa njenge-etherification agent; ukongeza kwi-methyl chloride, ipropylene oxide ikwasetyenziselwa ukufumana amaqela abambeleyo e-hydroxypropyl kwimveliso ye-HPMC. Iintlobo ezahlukeneyo ze-cellulose ethers zinee-methyl kunye ne-hydroxypropyl substitution ratios ezahlukeneyo, ezichaphazela ukuhambelana kwezinto eziphilayo kunye nobushushu be-thermal gelation yezisombululo ze-cellulose ether.
Inani lamaqela abambeleyo kwiyunithi yolwakhiwo lwe-anhydroglucose yeseli lunokubonakaliswa ngepesenti yobunzima okanye umndilili yenani lamaqela abambeleyo (okt, iqondo lokutshintshwa kwe-DS—iDigri yokuTshintsha). Inani lamaqela abambeleyo limisela iimpawu zeemveliso ze-cellulose ether. Iimpembelelo zomndilili weqondo lokutshintshela ekunyibilikeni kweemveliso ze-etherified zilandelayo:
(1) Iimveliso ze-etherification ezinomgangatho ophantsi wokutshintshwa zinyibilika ngokulula kwilye;
(2) Iimveliso ze-etherification ezineqondo eliphezulu kancinane lokutshintshwa zinyibilika ngokulula emanzini;
(3) Iimveliso ze-Etherification ezinomgangatho ophezulu wokutshintshwa zinyibilika ngokulula kwizinyibilikisi ze-polar organic;
(4) Iimveliso ze-Etherification ezinezinga eliphezulu lokutshintshwa zinyibilika ngokulula kwizinyibilikisi zendalo ezingezizo ipolar.
2. Iimeko zokusetyenziswa kwe-Cellulose Ether
I-Cellulose ether yi-polymer engeyiyo i-ionic semi-synthetic, e-soluble emanzini kunye ne-solvent-soluble. Ineempembelelo ezahlukeneyo kumashishini ahlukeneyo. Umzekelo, kwizinto zokwakha iikhemikhali, zineempembelelo ezidibeneyo zilandelayo:
①Iarhente yokugcina amanzi
②I-Thickener
③Umgangatho
④Ukwenziwa kwefilimu
⑤ Isibophelelo
Kwishishini le-polyvinyl chloride, i-emulsifier kunye ne-dispersant; kwishishini lamachiza, liyi-binder kunye nesikhokelo sokukhululwa esicothayo nesilawulwayo, njl. Ngenxa yokuba i-cellulose ineempembelelo ezahlukeneyo ezidibeneyo, ukusetyenziswa kwayo Intsimi nayo ininzi kakhulu. Oku kulandelayo kugxininise ekusebenziseni kunye nomsebenzi we-cellulose ether kwizinto ezahlukeneyo zokwakha.
(1) Kwipeyinti yelatex:
Kwishishini lepeyinti ye-latex, ukukhetha i-cellulose ye-hydroxyethyl, ukucaciswa ngokubanzi kwe-viscosity elinganayo yi-RT30000-50000cps, ehambelana nokucaciswa kwe-HBR250, kunye ne-reference dosage ngokubanzi malunga ne-1.5 ‰-2‰. Umsebenzi ophambili we-hydroxyethyl kwipeyinti ye-latex kukujiya, ukuthintela i-gelation ye-pigment, ukunceda ukusasazwa kwe-pigment, ukuzinza kwe-latex, kunye nokwandisa i-viscosity yamacandelo, okunegalelo ekusebenzeni komgangatho wokwakha: Iselulosi yeHydroxyethyl kulula kakhulu ukuyisebenzisa. Inokuchithwa emanzini abandayo kunye namanzi ashushu, kwaye ayichaphazeli ixabiso le-pH. Ingasetyenziselwa uxolo lwengqondo xa ixabiso le-PI liphakathi kwe-2 kunye ne-12. Iindlela zokusetyenziswa zezi zilandelayo: I. Ukongezwa ngokuthe ngqo kwimveliso: Kule ndlela, i-hydroxyethyl cellulose uhlobo olulibazisiweyo kufuneka lukhethwe, kunye ne-hydroxyethyl cellulose ixesha lokuchithwa elingaphezu kwemizuzu engama-30 lisetyenziswa. La manyathelo alandelayo: ① Yibeke kwisikhongozeli esinesixhobo sokucheba esiphakamileyo. Ubungakanani bamanzi acocekileyo ②Qala ukuvuselela rhoqo ngesantya esiphantsi, kwaye kwangaxeshanye kancinane wongeza ihydroxyethyl kwisisombululo ngokulinganayo ③Qhubeka ushukumisa de zonke izinto zegranular zifakwe emanzini ④Yongeza ezinye izongezo kunye nezongezo zealkaline, njl. njl. , uze ungeze amanye amacandelo kwifomula, kwaye ugaye de kube yimveliso egqityiweyo. Ⅱ. Ixhotyiswe ngotywala boomama ukuze isetyenziswe kamva: Le ndlela inokukhetha i-cellulose ekhawulezileyo, enefuthe lokulwa nokungunda. Inzuzo yale ndlela kukuba inokuguquguquka okukhulu kwaye inokongezwa ngokuthe ngqo kwipeyinti ye-latex. Indlela yokulungiselela iyafana namanyathelo ①-④. Ⅲ. Lungiselela isidudu ukuze sisetyenziswe kamva: Ekubeni izinyibilikisi zendalo zizinyibilikisi ezinganyibilikiyo (ezingenakunyibilika) kwi-hydroxyethyl, ezi zinyibilikisi zinokusetyenziselwa ukulungisa isidudu. Ezona zinyibiliki zisetyenziswa ngokuqhelekileyo zilulwelo lwendalo kwimixube yepeyinti ye-latex, efana ne-ethylene glycol, ipropylene glycol, kunye ne-film-forming agents (ezifana nediethylene glycol butyl acetate). I-porridge hydroxyethyl cellulose inokongezwa ngokuthe ngqo kwipeyinti. Qhubeka uvuselela de unyibilike ngokupheleleyo.
(2) Kudonga lokukrala iputty:
Okwangoku, kwizixeko ezininzi kwilizwe lam, i-putty enganyangekiyo yamanzi kunye ne-scrub-resistant-friendly-friendly putty ixatyiswe kakhulu ngabantu. Iveliswa yi-acetal reaction ye-vinyl alcohol kunye ne-formaldehyde. Ngoko ke, esi sixhobo sipheliswa ngokuthe ngcembe ngabantu, kwaye iimveliso ze-cellulose ether series zisetyenziselwa ukubuyisela le nto. Oko kukuthi, ukuphuhliswa kwezinto zokwakha ezihambelana nokusingqongileyo, i-cellulose okwangoku iyona nto kuphela. Kwi-putty enganyangekiyo emanzini, ihlulwe ibe ziindidi ezimbini: iputty eyomileyo kunye ne-putty paste. Phakathi kwezi ntlobo zimbini ze-putty, i-methyl cellulose ehlaziyiweyo kunye ne-hydroxypropyl methyl kufuneka ikhethwe. Ukucaciswa kwe-viscosity ngokubanzi phakathi kwe-30000-60000cps. Imisebenzi ephambili ye-cellulose kwi-putty kukugcina amanzi, ukudibanisa kunye nokuthambisa. Kuba iifomyula ze-putty zabavelisi abahlukeneyo zahlukile, ezinye ziyi-calcium egrey, i-calcium ekhanyayo, i-samente emhlophe, njl., kwaye ezinye ziyi-gypsum powder, i-calcium egrey, i-calcium ekhanyayo, njl. iifomula ezimbini nazo zahlukile. Imali eyongeziweyo imalunga ne-2 ‰-3 ‰. Kulwakhiwo lwe-putty eludongeni, ekubeni umgangatho wesiseko sodonga unomlinganiselo othile wokufunxa amanzi (izinga lokufunxa amanzi eludongeni lwezitena li-13%, kunye nesantya sokufunxa amanzi kwikhonkrithi yi-3-5%), idityaniswe ne-evaporation yelizwe langaphandle, ukuba i-putty ilahlekelwa ngamanzi ngokukhawuleza , Kuya kukhokelela ekuqhekekeni okanye ekususweni komgubo, okuya kwenza buthathaka amandla e-putty. Ngoko ke, ukongeza i-cellulose ether kuya kusombulula le ngxaki. Kodwa umgangatho we-filler, ngakumbi umgangatho we-ash calcium nayo ibaluleke kakhulu. Ngenxa ye-viscosity ephezulu ye-cellulose, i-buoyancy ye-putty nayo iphuculwe, kwaye into ephazamisayo ngexesha lokwakha nayo iyathintelwa, kwaye ikhululekile kwaye igcina umsebenzi emva kokukhuhla. Kukulungele ngakumbi ukongeza i-cellulose ether kwi-powder putty. Imveliso kunye nokusetyenziswa kwayo kulula ngakumbi. I-filler kunye nezongezo zinokuxutywa ngokulinganayo kwipowder eyomileyo.
(3) Udaka lwekhonkrithi:
Kwi-concrete mortar, ukufezekisa amandla okugqibela, i-samente kufuneka ifakwe ngokupheleleyo. Ngokukodwa ekwakhiweni kwehlobo, udaka lwekhonkrithi lulahlekelwa ngamanzi ngokukhawuleza, kwaye imilinganiselo ye-hydration epheleleyo isetyenziselwa ukugcina nokufefa amanzi. Inkunkuma yemithombo kunye nokusebenza okungahambi kakuhle, isitshixo kukuba amanzi aphezu komhlaba kuphela, kwaye i-hydration yangaphakathi ayiphelelanga, ngoko isisombululo kule ngxaki kukongeza ii-agent ezisibhozo zokugcina amanzi kwikhonkrithi yodaka, ngokuqhelekileyo khetha i-hydroxypropyl methyl. okanye i-methyl Cellulose, inkcazo ye-viscosity iphakathi kwe-20000-60000cps, kwaye isixa esongezelelweyo yi-2% -3%. Izinga logcino lwamanzi linokunyuswa libe ngaphezu kwama-85%. Indlela yokusetyenziswa kwikhonkrithi yodaka kukuxuba umgubo owomileyo ngokulinganayo kwaye uwuthulule emanzini.
(4) Ekutyatyekeni kwegypsum, igypsum edityanisiweyo, igypsum ephothiweyo:
Ngophuhliso olukhawulezayo lweshishini lokwakha, imfuno yabantu yezinto ezintsha zokwakha nayo iyanda imihla ngemihla. Ngenxa yokwanda kokuqonda kwabantu ngokukhuselwa kwendalo kunye nokuphuculwa okuqhubekayo kobuchule bokwakha, iimveliso ze-gypsum ze-cementitious ziye zaphuhliswa ngokukhawuleza. Okwangoku, ezona mveliso zixhaphakileyo zegypsum kukutyabeka igypsum, igypsum edityanisiweyo, igypsum eyakhiweyo, kunye neadhesive tile. I-gypsum ye-plastering yinto ephezulu yokutyabeka kwiindonga zangaphakathi kunye neesilingi. Udonga olutyatyekwe ngayo lulungile kwaye lugudileyo. Ibhodi entsha yokuncamathela yebhodi yokukhanya yinto encangathi eyenziwe ngegypsum njengesiseko sezinto kunye nezongezo ezahlukeneyo. Ilungele ukudityaniswa phakathi kwezinto ezahlukeneyo zodonga lwezakhiwo ezingaphiliyo. Ayinatyhefu, i-Odorless, amandla okuqala kunye nokumisela ngokukhawuleza, ukudibanisa okuqinileyo kunye nezinye iimpawu, yinto exhasayo kwiibhodi zokwakha kunye nokwakhiwa kweebhloko; i-agent ye-gypsum caulking yi-gap filler phakathi kweebhodi ze-gypsum kunye ne-filler yokulungisa iindonga kunye nokuqhekeka. Ezi mveliso zegypsum zinemisebenzi eyahlukeneyo. Ukongeza kwindima ye-gypsum kunye neefayili ezihambelanayo, umba ophambili kukuba izongezo ze-cellulose ether ezongeziweyo zidlala indima ephambili. Ekubeni i-gypsum ihlulwe ibe yi-gypsum ye-anhydrous kunye ne-hemihydrate gypsum, i-gypsum eyahlukileyo ineempembelelo ezahlukeneyo ekusebenzeni kwemveliso, ngoko ke ukuqina, ukugcinwa kwamanzi kunye nokunciphisa umgangatho wezinto zokwakha ze-gypsum. Ingxaki eqhelekileyo yezi zixhobo i-hollowing kunye nokuqhekeka, kwaye amandla okuqala awanakufikelelwa. Ukusombulula le ngxaki, kukukhetha uhlobo lwe-cellulose kunye nendlela yokusetyenziswa kwekhompawundi ye-retarder. Kulo mba, i-methyl okanye i-hydroxypropyl methyl 30000 ikhethwa ngokubanzi. -60000cps, imali eyongeziweyo yi-1.5% -2%. Phakathi kwazo, i-cellulose igxile ekugcinweni kwamanzi kunye nokunciphisa i-lubrication. Nangona kunjalo, akunakwenzeka ukuthembela kwi-cellulose ether njenge-retarder, kwaye kuyimfuneko yokongeza i-citric acid retarder ukuxuba nokusebenzisa ngaphandle kokuchaphazela amandla okuqala. Ugcino lwamanzi lubhekisa kubungakanani bamanzi aya kulahleka ngokwendalo ngaphandle kokufunxwa kwamanzi ngaphandle. Ukuba udonga lome kakhulu, ukufunxwa kwamanzi kunye nokunyuka kwemvelo kwisiseko somhlaba kuya kwenza ukuba izinto zilahlekelwe ngamanzi ngokukhawuleza, kunye nokuqhekeka kunye nokuqhekeka kuya kwenzeka. Le ndlela yokusetyenziswa ixutywe nomgubo owomileyo. Ukuba ulungiselela isisombululo, nceda ubhekisele kwindlela yokulungiselela isisombululo.
(5) Udaka lwe-thermal insulation
Udaka lwe-insulation luhlobo olutsha lwezixhobo zokugquma eludongeni lwangaphakathi kummandla osemantla. Yinto eludongeni eyenziwe ngezinto zokugquma, udaka kunye ne-binder. Kule nto, i-cellulose idlala indima ephambili ekudibaniseni nasekunyuseni amandla. Ngokuqhelekileyo khetha i-methyl cellulose ene-viscosity ephezulu (malunga ne-10000eps), i-dosage iphakathi kwe-2 ‰-3 ‰), kwaye indlela yokusetyenziswa i-powder eyomileyo yokuxuba.
(6) i-arhente yojongano
Khetha i-HPNC 20000cps njenge-agent ye-interface, khetha i-60000cps okanye ngaphezulu njenge-adhesive tile, kwaye usebenzise i-thickener njenge-agent ye-interface, enokuphucula amandla okuqina kunye namandla okuchasa utolo. Isetyenziswa njenge-arhente yokugcina amanzi ekudibaneni kweethayile ukunqanda iithayile ekuphelelweni kwamanzi ngokukhawuleza kwaye ziwe.
3. Imeko yekhonkco loshishino
(1) Ushishino oluphezulu
Izinto eziphambili ezifunekayo kwimveliso ye-cellulose ether ziquka umqhaphu osulungekileyo (okanye i-pulp yeplanga) kunye nezinye izinyibilikisi zeekhemikhali eziqhelekileyo, ezifana nepropylene oxide, i-methyl chloride, i-caustic soda, i-caustic soda, i-ethylene oxide, i-toluene kunye nezinye izinto ezincedisayo. Amashishini oshishino oluphezulu kolu shishino abandakanya umqhaphu osulungekileyo, amashishini okuvelisa iinkuni zomthi kunye namanye amashishini emichiza. Ukuguquguquka kwexabiso kwezinto eziphambili ezichazwe ngasentla ziya kuba neempembelelo ezahlukeneyo kwiindleko zemveliso kunye nexabiso lokuthengisa i-cellulose ether.
Iindleko zekotoni esulungekileyo ziphezulu. Ukuthatha i-ether yezinto zokwakha zebakala le-cellulose ether njengomzekelo, ngexesha lokunika ingxelo, iindleko zekotoni esulungekileyo zibalelwa kwi-31.74%, 28.50%, 26.59% kunye ne-26.90% yeendleko zentengiso yezinto zokwakha ibakala le-cellulose ether ngokulandelanayo. Ukuguquguquka kwexabiso lekotoni ecocekileyo kuya kuchaphazela iindleko zokuvelisa i-cellulose ether. Eyona nto iphambili kwimveliso yekotoni ecocekileyo yi-cotton linters. Iilitha zomqhaphu zezinye zeemveliso eziphuma kwinkqubo yokuvelisa umqhaphu, ikakhulu ezisetyenziselwa ukuvelisa i-cotton pulp, umqhaphu ococekileyo, i-nitrocellulose kunye nezinye iimveliso. Ixabiso lokusetyenziswa kunye nokusetyenziswa kwe-cotton linters kunye ne-cotton yahluke kakhulu, kwaye ixabiso layo lingaphantsi kunelomqhaphu, kodwa linokuhambelana okuthile kunye nokuguquguquka kwexabiso lomqhaphu. Ukuguquguquka kwexabiso le-cotton linters kuchaphazela ixabiso lekotoni ecocekileyo.
Ukuguquguquka okubukhali kwixabiso lekotoni ecocekileyo kuya kuba namaqondo ahlukeneyo empembelelo ekulawuleni iindleko zokuvelisa, ixabiso lemveliso kunye nenzuzo yamashishini kule shishini. Xa ixabiso lomqhaphu osulungekisiweyo liphezulu kwaye ixabiso le-pulp yeplanga lincinci, ukuze kuncitshiswe iindleko, i-pulp yomthi ingasetyenziselwa indawo kunye nokongeza umqhaphu osulungekisiweyo, ngakumbi ukuveliswa kwe-cellulose ethers kunye ne-viscosity ephantsi njenge amayeza kunye nebakala lokutya cellulose ethers. Ngokwedatha evela kwiwebhusayithi ye-National Bureau of Statistics, ngo-2013, indawo yokutyala umqhaphu yelizwe lam yayiziihektare eziyi-4.35 yezigidi, kwaye imveliso yomqhaphu yelizwe yayiziitoni ezizigidi ezi-6.31. Ngokwezibalo ezivela kwi-China Cellulose Industry Association, kwi-2014, isiphumo esipheleleyo somqhaphu ococekileyo oveliswe ngabavelisi abakhulu basekhaya abacociweyo be-cotton yayiyi-332,000 yeetoni, kwaye ukunikezelwa kwezinto eziluhlaza kuninzi.
Izinto eziphambili zokwenziwa kwezixhobo zemichiza yegraphite yintsimbi kunye nekhabhoni yegraphite. Ixabiso lentsimbi kunye nekhabhoni yegraphite libalelwa kumlinganiselo ophezulu wexabiso lemveliso yezixhobo zemichiza yegraphite. Ukuguquguquka kwexabiso kwezi zixhobo zekrwada kuya kuba neempembelelo ezithile kwiindleko zemveliso kunye nexabiso lokuthengisa lezixhobo zemichiza yegraphite.
(2) Ishishini elisezantsi le-cellulose ether
Njenge "industrial monosodium glutamate", i-cellulose ether inomlinganiselo ophantsi we-cellulose ether kwaye inoluhlu olubanzi lwezicelo. Amashishini asezantsi athe saa kuzo zonke iinkalo zobomi kuqoqosho lwesizwe.
Ngokuqhelekileyo, ishishini lokwakha elisezantsi kunye ne-real estate industry liya kuba nefuthe elithile kwizinga lokukhula kwemfuno yezinto zokwakha ibakala le-cellulose ether. Xa ishishini lokwakha lasekhaya kunye neshishini lezindlu nomhlaba likhula ngokukhawuleza, imfuno yemarike yasekhaya yezinto zokwakha ibakala le-cellulose ether ikhula ngokukhawuleza. Xa isantya sokukhula koshishino lokwakha lwasekhaya kunye noshishino lwezindlu nezindlu lucotha, isantya sokukhula kwemfuno yokwakha ibakala le-cellulose ether kwimarike yasekhaya liya kucotha, nto leyo eya kuqinisa ukhuphiswano kolu shishino kwaye ikhawulezise inkqubo yokusinda. awona afanelekileyo phakathi kwamashishini kolu shishino.
Ukususela ngo-2012, kwimeko yokucotha kwishishini lokwakha lasekhaya kunye ne-real estate industry, imfuno yezinto zokwakha ibakala le-cellulose ether kwimarike yasekhaya ayizange iguquke kakhulu. Ezona zizathu ziphambili zezi: 1. Isikali esipheleleyo soshishino lolwakhiwo lwasekhaya kunye neshishini lezindlu nomhlaba likhulu, kwaye imfuno yemalike iyonke inkulu kakhulu; Imakethi ephambili yabathengi yezinto zokwakha ibakala le-cellulose ether ikhula ngokuthe ngcembe ukusuka kwiindawo eziphuhliswe ngokwezoqoqosho kunye nezixeko ezikwinqanaba lokuqala nelesibini ukuya kwimimandla esembindini nakwintshona kunye nezixeko ezikumgangatho wesithathu, amandla okukhula kwemfuno yasekhaya kunye nokwandiswa kwendawo; 2. Isixa se-cellulose ether eyongeziweyo akhawunti umlinganiselo ophantsi weendleko zezinto zokwakha. Isixa esisetyenziswa ngumthengi omnye sincinci, kwaye abathengi basasazekile, abathambekele kwimfuno engqongqo. Iimfuno ezipheleleyo kwimarike esezantsi zizinzile; 3. Ukutshintsha kwexabiso lemarike yinto ebalulekileyo echaphazela utshintsho lwesakhiwo semfuno yezinto zokwakha grade cellulose ether. Ukususela ngo-2012, ixabiso lokuthengisa lezinto zokwakha i-ether cellulose grade liye lehla kakhulu, eliye labangela ukuhla okukhulu kwexabiso leemveliso eziphakathi ukuya phezulu kunye nokutsala abathengi abaninzi ukuba bathenge kwaye bakhethe, ukwandisa imfuno ye-mid-to. -imveliso ephezulu, kunye nokucinezela imfuno yemarike kunye nendawo yexabiso kwiimodeli eziqhelekileyo.
Iqondo lophuhliso lweshishini lamachiza kunye nesantya sokukhula kweshishini lamayeza liya kuchaphazela imfuno ye-ether ye-pharmaceutical grade cellulose. Ukuphuculwa komgangatho wokuphila kwabantu kunye neshishini lokutya eliphuhlisiweyo lilungele ukuqhuba imfuno yemarike ye-ether ye-cellulose ether.
Ixesha lokuposa: Jan-31-2023