Synthesis na Njirimara nke mmiri-soluble cellulose ether superplasticizer

Na mgbakwunye, a kwadebere cellulose owu ka ọ bụrụ ọkwa Ling-off nke polymerization wee mee ya na sodium hydroxide, 1,4 monobutylsulfonolate (1,4, butanesultone). E nwetara sulfobutylated cellulose ether (SBC) nwere ezigbo mmiri solubility. A mụrụ mmetụta nke okpomọkụ mmeghachi omume, oge mmeghachi omume na oke akụrụngwa na butyl sulfonate cellulose ether. Enwetara ọnọdụ mmeghachi omume kachasị mma, na nhazi nke ngwaahịa ahụ bụ FTIR. Site n'ịmụ mmetụta nke SBC na njirimara nke ciment tapawa na ngwa agha, a chọpụtara na ngwaahịa ahụ nwere mmetụta mmiri na-ebelata naphthalene usoro mmiri na-ebelata mmiri, na njigide mmiri dị mma karịa usoro naphthalene.onye na-ebelata mmiri. SBC nwere njirimara viscosity dị iche iche yana ọdịnaya sọlfọ nwere ogo dị iche iche nke azụ azụ maka tapawa ciment. Ya mere, a na-atụ anya na SBC ga-abụ onye na-eme ka mmiri na-ebelata mmiri, na-eme ka mmiri na-eme ka mmiri dị elu na-eme ka mmiri dị elu, ọbụna na-eme ka mmiri dị elu dị elu. Ngwongwo ya na-ekpebi nke ọma site n'usoro ihe omimi ya.

Isi okwu:cellulose; Nha nhata nke polymerization; butyl sulfonate cellulose ether; Onye na-ebelata mmiri

Mmepe na ntinye nke ihe na-arụ ọrụ dị elu nwere njikọ chiri anya na nyocha na mmepe nke ihe na-ebelata mmiri mmiri. Ọ bụ n'ihi ọdịdị nke onye na-eme ka mmiri na-ebelata mmiri na ihe ahụ nwere ike hụ na arụ ọrụ dị elu, ịdịte aka dị mma na ọbụna ike dị elu. Ka ọ dị ugbu a, enwere ụdị ndị na-esonụ nke na-ebelata mmiri dị irè nke ukwuu: naphthalene usoro mmiri na-ebelata mmiri (SNF), sulfonated amine resin series water mbenate agent (SMF), amino sulfonate series water mben agent (ASP), modified lignosulfonate. usoro mmiri na-ebelata mmiri (ML), na polycarboxylic acid series water mben agent (PC), nke na-arụsi ọrụ ike na nyocha ugbu a. Polycarboxylic acid superplasticizer nwere uru nke obere oge na-efunahụ, obere usoro onunu ogwu na mmiri mmiri dị elu nke ihe. Otú ọ dị, n'ihi ọnụ ahịa dị elu, ọ na-esiri ike ịmalite na China. Ya mere, naphthalene superplasticizer ka bụ isi ngwa na China. Ọtụtụ n'ime ihe ndị na-ebelata mmiri na-eme ka mmiri na-ekpo ọkụ na-eji formaldehyde na ihe ndị ọzọ na-agbanwe agbanwe nwere ịdị arọ molekul dị ala, nke nwere ike imerụ gburugburu ebe obibi na nhazi na iji usoro.

Mmepe nke ihe mgbakwunye ihe n'ụlọ na mba ọzọ na-eche ụkọ akụrụngwa akụrụngwa ihu, ịrị elu ọnụahịa na nsogbu ndị ọzọ. Olee otú iji ọnụ ala na ukwuu eke mmeghari ego dị ka akụrụngwa ịzụlite ọhụrụ elu arụmọrụ concrete admixtures ga-aghọ ihe dị mkpa isiokwu nke ihe admixtures nnyocha. Starch na cellulose bụ isi ihe nnọchianya nke ụdị ihe onwunwe a. N'ihi nnukwu isi iyi nke akụrụngwa, mmeghari ohuru, dị mfe iji ụfọdụ reagents mee ihe, a na-eji ihe nrụpụta ha mee ihe n'ọtụtụ ebe. Ka ọ dị ugbu a, nyocha nke starch sulfonated dị ka ihe na-ebelata mmiri enweela ọganihu. N'afọ ndị na-adịbeghị anya, nchọpụta e mere maka ihe ndị na-emepụta cellulose na-agbaze mmiri dị ka ihe na-ebelata mmiri adọtawokwa ndị mmadụ anya. Liu Weizhe et al. eji owu ajị eriri dị ka akụrụngwa synthesize cellulose sulfate na dị iche iche ikwu molekụla arọ na ogo nke nnọchi. Mgbe ogo ngbanwe ya dị n'ụdị ụfọdụ, ọ nwere ike imeziwanye mmiri nke cement slurry yana ike nke ahụ na-eme ka ciment dịkwuo mma. The patent na-ekwu na ụfọdụ polysaccharide ewepụtara site chemical mmeghachi omume ewebata ike hydrophilic iche iche, nwere ike nweta na ciment na ezi dispersion nke mmiri-soluble polysaccharide mmepụta, dị ka sodium carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, carboxymethyl sulfonate cellulose na na. Agbanyeghị, Knaus et al. chọpụtara na CMHEC adịghị mma maka ojiji dị ka ihe na-ebelata mmiri mmiri. Naanị mgbe ewebatara otu sulfonic acid n'ime ụmụ irighiri CMC na CMHEC, yana ịdị arọ ya dị 1.0 × 105 ~ 1.5 × 105 g / mol, ọ nwere ike ịnwe ọrụ nke onye na-ebelata mmiri mmiri. E nwere echiche dị iche iche ma ụfọdụ ihe ndị na-emepụta mmiri na-eme ka mmiri dị na cellulose dị mma maka iji ya mee ihe dị ka ndị na-ebelata mmiri, na e nwere ọtụtụ ụdị nke mmiri na-edozi mmiri, n'ihi ya, ọ dị mkpa iji mee nchọpụta miri emi na nhazi nhazi na nhazi na nhazi. ngwa nke ọhụrụ cellulose mmepụta.

N'ime akwụkwọ a, a na-eji cellulose owu mee ihe dị ka ihe mmalite iji kwadebe polymerization degrees cellulose, na mgbe ahụ site na sodium hydroxide alkalization, họrọ okpomọkụ mmeghachi omume kwesịrị ekwesị, oge mmeghachi omume na 1,4 monobutyl sulfonolactone mmeghachi omume, mmeghe nke sulfonic acid otu na cellulose. molecules, nke enwetara mmiri-soluble butyl sulfonic acid cellulose ether (SBC) nhazi usoro nyocha na nnwale ngwa. A tụlere ohere iji ya dị ka onye na-ebelata mmiri.

1. Nnwale

1.1 Akụrụngwa na akụrụngwa

owu na-amị amị; sodium hydroxide (analytical dị ọcha); Hydrochloric acid (36% ~ 37% ngwọta mmiri, nyocha nke dị ọcha); isopropyl mmanya (nyocha nke ọma); 1,4 monobutyl sulfonolactone (ọkwa ụlọ ọrụ, nke Siping Fine Chemical Plant nyere); 32.5R nkịtị Portland ciment (Ụlọ ọrụ ciment Dalian Onoda); Naphthalene usoro superplasticizer (SNF, Dalian Sicca).

Spectrum One-B Fourier Transform infrared spectrometer, nke Perkin Elmer mepụtara.

Uru IRIS Inductively jikọtara Plasma Emission Spectrometer (IcP-AEs), nke Thermo Jarrell Ash Co.

Ejiri ZETAPUS nwere ike nyocha (Brookhaven Instruments, USA) iji tụọ ike nke cement slurry gwakọtara na SBC.

1.2 Usoro nkwadebe nke SBC

Nke mbụ, a kwadebere cellulose ogo polymerization ziri ezi dịka usoro akọwara n'akwụkwọ. A tụrụ obere cellulose owu ma tinye ya n'ime ite nwere ụzọ atọ. N'okpuru nchebe nke nitrogen, a na-agbakwunye acid hydrochloric acid na ntinye nke 6%, na ngwakọta na-akpali akpali. Mgbe ahụ, a kwụsịrị ya na mmanya isopropyl n'ime flask ọnụ atọ, alkalid ruo oge ụfọdụ na 30% sodium hydroxide aqueous solution, tụọ ntakịrị 1,4 monobutyl sulfanolactone, wee tụba n'ime efere ọnụ atọ, kpalie ya. N'otu oge ahụ, ma debe okpomọkụ nke mmiri ịsa mmiri na-ekpo ọkụ mgbe niile. Mgbe mmeghachi omume ahụ gasịrị ruo oge ụfọdụ, a na-eme ka ngwaahịa ahụ dị jụụ na ụlọ okpomọkụ, na-agbanye ya na mmanya isopropyl, na-agbapụta ma na-edozi ya, na-enwetakwa ngwaahịa ahụ. Mgbe itucha na methanol aqueous ngwọta ọtụtụ ugboro, pumped na nzacha, ngwaahịa e mesịrị agụụ akpọnwụwo na 60 ℃ maka ojiji.

1.3 SBC nha arụmọrụ

A gbazere ngwaahịa SBC na 0.1 mol/L NaNO3 aqueous solution, na viscosity nke ebe dilution ọ bụla nke ihe nlele ahụ bụ Ustner viscometer tụrụ iji gbakọọ viscosity njirimara ya. Achọpụtara ọdịnaya sọlfọ nke ngwaahịa ahụ site na ngwaọrụ ICP - AES. A na-ewepụta ihe nlele SBC site na acetone, ikuku akpọnwụwo, wee were ihe dị ka ihe dịka 5 mg gwerie ya na KBr maka nkwadebe nlele. A na-eme ule spectrum infrared na ihe nlele SBC na cellulose. A kwadebere nkwusioru ciment site na oke ciment nke 400 yana ọdịnaya na-ebelata mmiri nke 1% nke oke ciment. A nwalere ike ya n'ime nkeji 3.

A na-atụ mmiri mmiri simenti slurry na ciment ụrọ mmiri mbelata ọnụ ọgụgụ dị ka GB/T 8077-2000 “Ule ule maka ịdị n'otu nke ihe admixture”, mw/me= 0.35. A na-eme nyocha oge nhazi nke cement ciment dị ka GB / T 1346-2001 "Ule ule maka oriri mmiri, oge nhazi na nkwụsi ike nke Cement Standard Consistency". Simenti ngwa agha compressive ike dị ka GB/T 17671-1999 "cement ụrọ ike ule Method (IS0 usoro)" usoro nke mkpebi siri ike.

2. Nsonaazụ na mkparịta ụka

2.1 IR nyocha nke SBC

Ụdị infrared nke cellulose raw na ngwaahịa SBC. N'ihi na ọnụ ọgụgụ kachasị elu nke S - C na S - H adịghị ike nke ukwuu, ọ dịghị mma maka njirimara, ebe s=o nwere oke mmịpụta siri ike. Ya mere, enwere ike ikpebi ịdị adị nke otu sulfonic acid n'ime usoro ihe omimi site n'ịchọpụta ịdị adị nke S = O elu. Dị ka infrared spectra nke cellulose akụrụngwa na ngwaahịa SBC, na cellulose spectra, e nwere ike absorption elu nso nso ebili mmiri nọmba 3350 cm-1, nke a na nkewa dị ka hydroxyl na-agbatị vibration elu na cellulose. Ọnụ kasị elu nke mmịpụta siri ike dị nso na nọmba ebili mmiri 2 900 cm-1 bụ methylene (CH2 1) na-agbatị elu ịma jijiji. Usoro nke bandwit nke nwere 1060, 1170, 1120 na 1010 cm-1 na-egosipụta ọnụ ọgụgụ kasị elu nke mmịpụta ịma jijiji nke ìgwè hydroxyl na mkpirisi mmịpụta nke mmịpụta ether (C - o - C). Nọmba ebili mmiri dị gburugburu 1650 cm-1 na-egosipụta njikọ mmịnye hydrogen nke otu hydroxyl na mmiri efu hibere. The band 1440 ~ 1340 cm-1 na-egosi crystalline Ọdịdị nke cellulose. Na ụdịdị IR nke SBC, ike nke band 1440 ~ 1340 cm-1 na-ebelata. Ike nke ọnụ ọgụgụ kachasị elu nke dị nso 1650 cm-1 mụbara, na-egosi na ike ịmepụta njikọ hydrogen siri ike. Mkpịsị aka siri ike pụtara na 1180,628 cm-1, nke na-apụtaghị na infrared spectroscopy nke cellulose. Nke mbụ bụ njirimara mmịpụta kacha elu nke s=o bond, ebe nke ikpeazụ bụ njirimara mmịpụta kacha elu nke s=o bond. Dịka nyocha a dị n'elu, otu sulfonic acid dị na agbụ molekul nke cellulose mgbe mmeghachi omume etherification gasịrị.

2.2 Mmetụta nke ọnọdụ mmeghachi omume na arụmọrụ SBC

Enwere ike ịhụ site na mmekọrịta dị n'etiti ọnọdụ mmeghachi omume na ihe onwunwe nke SBC na okpomọkụ, oge mmeghachi omume na ihe onwunwe na-emetụta njirimara nke ngwaahịa ndị a na-emepụta. A na-ekpebi solubility nke ngwaahịa SBC site na ogologo oge achọrọ maka ngwaahịa 1g kpamkpam na 100mL deionized mmiri na ụlọ okpomọkụ; N'ime ule mbelata mmiri nke ngwa agha, ọdịnaya SBC bụ 1.0% nke oke ciment. Tụkwasị na nke ahụ, ebe ọ bụ na cellulose bụ ihe mejupụtara ya bụ anhydroglucose unit (AGU), a na-agbakọ ọnụ ọgụgụ cellulose dị ka AGU mgbe a na-agbakọ nha nke reactant. E jiri ya tụnyere SBCl ~ SBC5, SBC6 nwere viscosity dị ala na ọdịnaya sọlfọ dị elu, na ọnụego mbelata mmiri nke ngwa agha bụ 11.2%. Njirimara viscosity nke SBC nwere ike igosipụta oke molekul ya. Nnukwu njirimara viscosity na-egosi na oke molekụla ikwu ya buru ibu. Otú ọ dị, n'oge a, viscosity nke aqueous ngwọta na otu ntinye uche ga-apụghị izere ezere na-abawanye, na free ije nke macromolecules ga-ejedebeghị, nke na-adịghị mma na ya adsorption n'elu nke ciment irighiri, si otú na-emetụta egwuregwu nke mmiri. ibelata ọrụ mgbasa ozi nke SBC. Ọdịnaya sọlfọ nke SBC dị elu, na-egosi na ogo nnọchi anya butyl sulfonate dị elu, yinye molekụla SBC na-ebu ọnụ ọgụgụ chaja karịa, na akụkụ ciment dị n'elu mmetụta siri ike, yabụ mgbasa ya nke cementi siri ike dịkwa ike.

Na etherification nke cellulose, iji meziwanye ogo etherification na àgwà ngwaahịa, a na-ejikarị usoro nke otutu alkalization etherification eme ihe. SBC7 na SBC8 bụ ngwaahịa enwetara site na etherification alkalization ugboro ugboro maka oge 1 na 2, n'otu n'otu. N'ụzọ doro anya, viscosity ha njirimara dị ala na sọlfọ ọdịnaya dị elu, mmiri ikpeazụ solubility dị mma, ọnụ ọgụgụ mbelata mmiri nke ngwa ngwa ciment nwere ike iru 14.8% na 16.5%, n'otu n'otu. Ya mere, n'ime ule ndị a, a na-eji SBC6, SBC7 na SBC8 mee ihe dị ka ihe nyocha iji kwurịta mmetụta ngwa ha na paste ciment na ngwa agha.

2.3 Mmetụta nke SBC na akụrụngwa ciment

2.3.1 Mmetụta nke SBC na mmiri mmiri nke tapawa ciment

Mmetụta usoro mmiri na-ebelata ọdịnaya ihe nnọchite n'ime mmiri nke tapawa ciment. SNF bụ usoro naphthalene superplasticizer. Enwere ike ịhụ ya site na ntụgharị mmetụta nke ọdịnaya nke onye na-ebelata mmiri na mmiri mmiri nke ciment tapawa, mgbe ọdịnaya nke SBC8 na-erughị 1.0%, mmiri nke ciment mado ji nwayọọ nwayọọ na-abawanye na mmụba nke ọdịnaya, na mmetụta. dị ka nke SNF. Mgbe ọdịnaya gafere 1.0%, uto nke fluidity nke slurry ji nwayọọ nwayọọ na-ebelata, usoro ahụ na-abanyekwa na mpaghara ikpo okwu. Enwere ike ịtụle na ọdịnaya juru eju nke SBC8 bụ ihe dịka 1.0%. SBC6 na SBC7 nwekwara usoro yiri nke ahụ na SBC8, mana ọdịnaya saturation ha dị elu nke ukwuu karịa SBC8, na ogo nkwalite nke slurry fluidity dị ọcha adịghị elu ka SBC8. Agbanyeghị, ọdịnaya SNF juru eju bụ ihe dịka 0.7% ~ 0.8%. Mgbe ọdịnaya nke SNF na-aga n'ihu na-abawanye, mmiri mmiri nke slurry na-agakwa n'ihu na-abawanye, ma dị ka mgbanaka na-agba ọbara si dị, enwere ike ikwubi na mmụba n'oge a bụ akụkụ nke nkewa nke mmiri na-agba ọbara site na ciment slurry. N'ikpeazụ, ọ bụ ezie na ọdịnaya juru eju nke SBC dị elu karịa nke SNF, a ka nwebeghị ihe ngosi ọbara ọgbụgba mgbe ọdịnaya nke SBC karịrị ọdịnaya ya juputara site n'ọtụtụ. Ya mere, enwere ike ikpebi na SBC nwere mmetụta nke ibelata mmiri ma nwee ụfọdụ njigide mmiri, nke dị iche na SNF. Ọ dị mkpa ka a mụọkwu ọrụ a.

Enwere ike ịhụ ya site na njikọ njikọ dị n'etiti mmiri nke ciment tapawa na 1.0% mmiri na-ebelata ọdịnaya onye ọrụ na oge na mfu mmiri nke cementi ciment jikọtara ya na SBC dị ntakịrị n'ime 120min, karịsịa SBC6, onye mbido mbụ ya bụ naanị ihe dịka 200mm. , na mfu nke mmiri mmiri na-erughị 20%. Mfu nke slurry fluidity dị n'usoro nke SNF>SBC8>SBC7>SBC6. Nnyocha e mere egosiwo na naphthalene superplasticizer na-etinyekarị aka n'elu akụkụ ciment site na ike na-asọ oyi. Site na ọganihu nke hydration, ihe fọdụrụ na mmiri na-ebelata ihe n'ụlọnga na slurry na-ebelata, nke mere na adsorbed mmiri na-ebelata ihe n'ụlọnga n'elu nke ciment ahụ na-eji nwayọọ nwayọọ belata. Akwụsị nke dị n'etiti ụmụ irighiri ihe na-esighi ike, na simenti irighiri na-emepụta condensation anụ ahụ, nke na-egosi mbelata nke mmiri mmiri nke net slurry. Ya mere, mfu nke ciment slurry gwakọtara na naphthalene superplasticizer ka ukwuu. Agbanyeghị, ọtụtụ ihe na-ebelata mmiri naphthalene ejiri na injinia agwakọtawo nke ọma iji meziwanye ntụpọ a. Ya mere, n'ihe gbasara njide ego, SBC dị elu karịa SNF.

2.3.2 Mmetụta nke ikike na ịtọ oge nke tapawa ciment

Mgbe ịgbakwunye mmiri na-ebelata ihe n'ụlọnga na ciment mix, na ciment irighiri adsorbed mmiri mbenata n'ụlọnga ụmụ irighiri ihe, otú ike eletriki Njirimara nke ciment irighiri nwere ike gbanwee si nti na-adịghị mma, na zuru oke uru na-abawanye doro anya. Uru zuru oke nke ike simenti agwakọta na SNF dị elu karịa nke SBC. N'otu oge ahụ, a na-agbatị oge nhazi nke cement ciment gwakọtara na SBC ruo ogo dị iche iche ma e jiri ya tụnyere ihe nlele efu, na oge nhazi oge dị na SBC6>SBC7>SBC8 site na ogologo ruo mkpụmkpụ. Enwere ike ịhụ na site na mbelata nke viscosity njirimara SBC na mmụba nke ọdịnaya sọlfọ, a na-eji nwayọọ nwayọọ na-ebelata oge nhazi nke tapawa ciment. Nke a bụ n'ihi na SBC bụ nke polypolysaccharide, na e nwere ọtụtụ hydroxyl dị iche iche na molekul yinye, nke nwere dị iche iche ogo retarding mmetụta na hydration mmeghachi omume nke Portland ciment. E nwere ihe dị ka anọ dị iche iche nke retarding n'ụlọnga usoro, na retarding usoro nke SBC bụ Olee ihe enyemaka dị ka ndị a: N'ime alkaline ọkara nke ciment hydration, hydroxyl otu na free Ca2 + na-etolite mgbagwoju anya, nke mere na ịta nke Ca2 10 na mmiri mmiri na-adọ. mbelata, ma nwekwara ike adsorbed n'elu ciment ahụ na hydration ngwaahịa n'elu nke 02- na-etolite hydrogen agbụ, na ndị ọzọ hydroxyl dị iche iche na mmiri molekul site hydrogen bond mkpakọrịta, nke mere na elu nke ciment ahụ kpụrụ a oyi akwa nke. ihe nkiri mmiri siri ike. Ya mere, a na-egbochi usoro hydration nke ciment. Otú ọ dị, ọnụ ọgụgụ nke hydroxyl dị iche iche na agbụ nke SBC nwere ọdịnaya sọlfọ dị iche iche dị nnọọ iche, ya mere mmetụta ha na usoro hydration ciment ga-adị iche.

2.3.3 Ọnụego mbelata mmiri nke ngwa agha na ule ike

Dị ka arụmọrụ nke ngwa agha nwere ike igosipụta arụmọrụ nke kọnkịtị ruo n'ókè ụfọdụ, akwụkwọ a na-enyochakarị arụmọrụ nke ngwa agha gwakọtara na SBC. A na-edozi oriri mmiri nke ngwa agha dị ka ọkọlọtọ nyocha nke ọnụ ọgụgụ mbelata mmiri nke ngwa agha, nke mere na mgbasawanye ngwa ngwa ruru (180± 5) mm, na 40 mm × 40 mlTl × 160 igwe ihe atụ dị njikere iji nwalee mkpakọ. ike nke afọ ọ bụla. N'iji ya tụnyere ụdị oghere na-enweghị onye na-eme ka mmiri na-ebelata, ike nke ngwa ngwa nwere ihe na-ebelata mmiri na afọ ọ bụla ka emelitere na ogo dị iche iche. Ike mkpakọ nke ụdịdị ejiri 1.0% SNF mụbara site na 46%, 35% na 20% n'otu n'otu na ụbọchị 3, 7 na 28. Mmetụta nke SBC6, SBC7 na SBC8 na ike mkpakọ nke ngwa agha abụghị otu. Ike nke ngwa agha agwakọta na SBC6 na-abawanye ntakịrị n'afọ ọ bụla, na ike nke ngwa agha na 3 d, 7 d na 28d na-abawanye site na 15%, 3% na 2% n'otu n'otu. Ike mkpakọ nke ngwa agha gwakọtara na SBC8 mụbara nke ukwuu, na ike ya na 3, 7 na 28 ụbọchị mụbara site na 61%, 45% na 18%, n'otu n'otu, na-egosi na SBC8 nwere mmetụta siri ike na-ebelata mmiri na-ewusi ike na ciment mortar.

2.3.4 Mmetụta nke ihe nhazi ihe omimi nke SBC

Ejikọtara ya na nyocha nke dị n'elu na mmetụta SBC na ciment tapawa na ngwa agha, ọ gaghị esiri ike ịchọta na usoro ihe omimi nke SBC, dị ka njirimara viscosity (nke metụtara ịdị arọ ya, viscosity n'ozuzu ya dị elu, onye ikwu ya). molekụla arọ dị elu), sọlfọ ọdịnaya (metụtara ogo nnọchi nke ike hydrophilic otu na molekụla yinye, elu sọlfọ ọdịnaya bụ elu ogo nke nnọchi, Na vice versa) na-ekpebi ngwa arụmọrụ nke SBC. Mgbe ọdịnaya nke SBC8 nwere viscosity dị ala na ọdịnaya sọlfọ dị elu dị ala, ọ nwere ike ịnwe ike ịgbasa simenti, yana ọdịnaya saturation dịkwa ala, ihe dịka 1.0%. Mgbatị oge nhazi nke ciment mado dị mkpụmkpụ. Ike mkpakọ nke ngwa agha nwere otu mmiri mmiri na-abawanye n'ụzọ doro anya na afọ ọ bụla. Agbanyeghị, SBC6 nwere viscosity dị elu yana ọdịnaya sọlfọ dị ala nwere obere mmiri mmiri mgbe ọdịnaya ya dị ntakịrị. Otú ọ dị, mgbe ọdịnaya ya na-abawanye ruo ihe dịka 1.5%, ikike nkesa ya na irighiri ciment dịkwa oke mkpa. Otú ọ dị, oge nhazi nke slurry dị ọcha na-agbatịkwu, nke na-egosi njirimara nke nhazi ngwa ngwa. Mmelite nke ike mkpakọ ngwa agha n'okpuru afọ dị iche iche nwere oke. N'ozuzu, SBC dị mma karịa SNF na njigide mmiri mmiri nke ngwa agha.

3. Nkwubi okwu

1. A na-akwadebe cellulose na ogo polymerization ziri ezi site na cellulose, nke etherized na 1,4 monobutyl sulfanolactone mgbe NaOH alkalization gasịrị, mgbe ahụ, a kwadebere butyl sulfonolactone na-edozi mmiri. Ọnọdụ mmeghachi omume kachasị mma nke ngwaahịa bụ ndị a: ahịrị (Na0H); Site na (AGU); n (BS) -2.5: 1.0: 1.7, oge mmeghachi omume bụ 4.5h, okpomọkụ mmeghachi omume bụ 75 ℃. Alkalization ugboro ugboro na etherification nwere ike ibelata viscosity njirimara ma mee ka ọdịnaya sọlfọ dị na ngwaahịa ahụ dịkwuo elu.

2. SBC nwere njirimara viscosity kwesịrị ekwesị na ọdịnaya sọlfọ nwere ike imeziwanye mmiri nke ciment slurry ma melite mfu mmiri. Mgbe ọnụego mbelata mmiri nke ngwa agha ruru 16.5%, ike mkpakọ nke ngwa ngwa n'afọ ọ bụla na-abawanye n'ụzọ doro anya.

3. Ngwa nke SBC dị ka onye na-ebelata mmiri na-egosi ụfọdụ nkwụsịtụ. N'okpuru ọnọdụ nke viscosity njirimara kwesịrị ekwesị, ọ ga-ekwe omume ịnweta onye na-ebelata mmiri na-arụ ọrụ nke ọma site n'ịba ụba ọdịnaya sulfur na ibelata ogo retarding. N'ịtụ aka na ụkpụrụ mba dị mkpa nke ihe mgbakwunye ihe, a na-atụ anya na SBC ga-abụ onye na-ebelata mmiri nke nwere uru ngwa bara uru, onye na-ebelata mmiri na-ebelata mmiri, na-eme ka onye na-ebelata mmiri na-arụ ọrụ dị elu, na ọbụna onye na-ebelata mmiri dị elu.