Isishwankathelo
I-Cellulose yipolymer yendalo eyenziwe ngeeyunithi ze-β-glucose ezingenahydrous, kwaye inamaqela amathathu e-hydroxyl kwiringi yesiseko nganye.Ngokuguqulwa kweekhemikhali ze-cellulose, iindidi ze-cellulose derivatives zinokuveliswa, kwaye enye yazo i-cellulose ether.I-cellulose ether yi-polymer compound ene-ether structure ephuma kwi-cellulose, kuquka i-methyl cellulose, i-ethyl cellulose, i-hydroxyethyl cellulose, i-hydroxypropyl cellulose, i-carboxymethyl cellulose, kunye nabanye.Ezi ziphuma zidla ngokuveliswa ngokusabela i-alkali cellulose kunye ne-monochloroalkane, i-ethylene oxide, i-propylene oxide, okanye i-monochloroacetic acid.Isiphumo se-cellulose ether sinokunyibilika okugqwesileyo kwamanzi, amandla okuqina, kunye neempawu zokwenza ifilim, kwaye isetyenziswa kakhulu kumashishini afana nokwakha, amayeza, ukutya, kunye nezithambiso.I-Cellulose ether yinto ehlaziyekayo, enokubola, kunye ne-non-toxic, iyenza ibe yinto edumileyo kwiipolima zokwenziwa.
Ukusebenza kunye neempawu
1. Iimpawu zenkangeleko
I-Cellulose ether ngumgubo omhlophe, ongenavumba, onama-fibrous ofunxa lula ukufuma kwaye wenze i-colloid ezinzileyo, ebonakalayo, ecacileyo xa inyibilikiswa emanzini.
2. Ukuqulunqwa kwefilimu kunye nokunamathela
Ukuguqulwa kweekhemikhali zeselulosi ukuvelisa i-cellulose ether kuchaphazela kakhulu iimpawu zayo, kubandakanywa ukunyibilika kwayo, ukukwazi ukwenza ifilimu, amandla okudibanisa kunye nokuxhathisa ityuwa.Ezi mpawu zenza i-ether ye-cellulose ibe yipolima enqwenelekayo kakhulu enamandla omatshini abalaseleyo, ukuguquguquka, ukuxhathisa ubushushu, kunye nokumelana nokubanda.Ukongeza, ibonakalisa ukuhambelana okuhle kunye neentlaka ezahlukeneyo kunye neeplasticizers, iyenza ilungele ukusetyenziswa kwimveliso yeeplastiki, iifilimu, ivanishi, izinto zokuncamathelisa, i-latex, kunye nezixhobo zokugquma iziyobisi.Ngenxa yeempawu zayo eziguquguqukayo, i-cellulose ether ibe yinto ebalulekileyo kwishishini lokuvelisa, ukubonelela ngokusebenza okuphuculweyo, ukuzinza, kunye nokuqina kwiimveliso ezininzi.Ngenxa yoko, inoluhlu olubanzi lwezicelo kwiinkalo ezahlukeneyo, kubandakanya amayeza, iingubo, amalaphu, ulwakhiwo, kunye namashishini okutya, phakathi kwabanye.
3. Ukunyibilika
I-solubility ye-cellulose ethers efana ne-methylcellulose, i-methyl hydroxyethyl cellulose, i-hydroxyethyl cellulose, kunye ne-sodium carboxymethyl hydroxyethyl cellulose iyahluka ngokuxhomekeka kwiqondo lokushisa kunye ne-solvent esetyenzisiweyo.I-Methylcellulose kunye ne-methyl hydroxyethyl cellulose zinyibilika kumanzi abandayo kunye nezinye izinyibilikisi eziphilayo kodwa ziyancipha xa zishushu, kunye ne-methylcellulose precipitating kwi-45-60 ° C kunye ne-etherified etherified methyl hydroxyethyl cellulose kwi-65-80 ° C.Nangona kunjalo, imvula inokuphinda inyibilike xa ubushushu buthotyiwe.Kwelinye icala, i-hydroxyethyl cellulose kunye ne-sodium carboxymethyl hydroxyethyl cellulose zinyibilika emanzini nakweliphi na iqondo lobushushu kodwa azinyibiliki kwizinyibilikisi zendalo.Ezi cellulose ethers zineepropathi ezahlukeneyo zokunyibilika kunye nemvula ezenza zilungele usetyenziso olwahlukeneyo kumashishini afana neeplastiki, iifilimu, iingubo kunye nokuncamathelisa.
4. Ukutyeba
Xa i-cellulose ether inyibilika emanzini, yenza isisombululo se-colloidal esine-viscosity yayo iphenjelelwa yi-degree of polymerization ye-cellulose ether.Isisombululo siqulethe i-hydrated macromolecules ebonisa ukuziphatha okungeyo-Newtonian, oko kukuthi, ukuziphatha okuhambayo kuyatshintsha kunye ne-shear force esetyenziswayo.Ngenxa yesakhiwo se-macromolecular, i-viscosity yesisombululo ikhula ngokukhawuleza ngokugxininiswa, kodwa iyancipha ngokukhawuleza ngokunyuka kweqondo lokushisa.I-viscosity yezisombululo ze-cellulose ether nazo ziphenjelelwa yi-pH, amandla e-ionic, kunye nobukho bezinye iikhemikhali.Ezi mpawu zikhethekileyo ze-ether cellulose zenza ukuba zibe luncedo kwizicelo ezahlukeneyo ezifana ne-adhesives, i-coatings, izinto zokuthambisa, kunye neemveliso zokutya.
Isicelo
1. Ishishini lePetroleum
I-sodium carboxymethyl cellulose (i-NaCMC) yi-ether ye-cellulose enoluhlu olubanzi lwezicelo kwinkqubo yokukhutshwa kweoli.I-viscosity yayo egqwesileyo-yokwandisa kunye nelahleko yelahleko yokunciphisa iipropathi iyenza ibe lukhetho oludumileyo kulwelo lokomba, ulwelo lwesamente, kunye nolwelo oluqhekezayo.Ngokukodwa, ibonise iziphumo ezithembisayo ekuphuculeni ukubuyiswa kweoli.I-NaCMC inokuxhathisa ukungcoliseka kwetyuwa okunyibilikayo okwahlukeneyo kwaye yonyuse ukubuyiswa kwe-oyile ngokunciphisa ilahleko yamanzi, kunye nokunganyangeki kwayo kwetyuwa kunye nokwanda kwe-viscosity-ukwazi ukwenza ukuba ilungele ukulungiselela ulwelo lokomba lwamanzi amatsha, amanzi olwandle, kunye namanzi anetyuwa agcweleyo.
I-sodium carboxymethyl hydroxypropyl cellulose (NaCMHPC) kunye ne-sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC) zimbini ze-cellulose ether eziphuma kwizinga eliphezulu lokuludaka, ukusebenza kakuhle kwe-anti-calcium, kunye nobuchule obuhle bokwandisa i-viscosity, zibenza ukhetho olugqwesileyo njengee-arhente zokwemba udaka kunye nezixhobo. ukulungiselela ulwelo lokugqibezela.Babonisa i-viscosity ephezulu yokwandisa amandla kunye nelahleko yokunciphisa iipropathi zokunciphisa xa kuthelekiswa ne-hydroxyethyl cellulose, kunye nokukwazi kwabo ukuqulunqwa kwi-drilling fluids yobunzima obahlukeneyo phantsi kobunzima be-calcium chloride ibenza ibe yinto edibanisayo yokwandisa imveliso yeoli.
I-Hydroxyethyl cellulose (HEC) yenye i-cellulose ephuma kwi-cellulose esetyenziswa njenge-agent yodaka kunye nokuzinzisa kwinkqubo yokomba, ukugqiba, kunye ne-samente.Xa kuthelekiswa ne-sodium carboxymethyl cellulose kunye ne-guar gum, i-HEC inokumiswa kwesanti eyomeleleyo, umthamo wetyuwa ephezulu, ukumelana nobushushu obulungileyo, ukumelana nokuxubana okuphantsi, ukulahleka okuncinci kolwelo, kunye nebhloko yokuqhekeka kwejeli.I-HEC isetyenziswe ngokubanzi ngenxa yesiphumo sayo esihle sokuqina, intsalela ephantsi, kunye nezinye iipropathi.Ngokubanzi, i-cellulose ethers efana ne-NaCMC, i-NaCMHPC, i-NaCMHEC, kunye ne-HEC idlala indima ebalulekileyo kwinkqubo yokukhutshwa kweoli kwaye ibonise amandla amakhulu ekuphuculeni ukubuyiswa kweoli.
2. Ishishini loKwakha kunye nePeyinti
I-sodium carboxymethyl cellulose sisongezelelo semathiriyeli yokwakha enokusetyenziswa ngeendlela ezininzi njenge-retarder, i-arhente yokugcina amanzi, i-thickener kunye ne-binder yokwakha i-masonry kunye nokutyabeka udaka.Isenokusetyenziswa njenge-dispersant, i-agent egcina amanzi kunye ne-thickener yodaka, udaka kunye nezixhobo zokulinganisa umhlaba.I-masonry ekhethekileyo kunye ne-plastering mortar admixture eyenziwe nge-carboxymethyl cellulose inokuphucula ukusebenza, ukugcinwa kwamanzi kunye nokumelana nokuqhekeka, ukuphepha ukuqhekeka kunye ne-voids kudonga lwebhloko.Ukongeza, i-methyl cellulose ingasetyenziselwa ukwenza izinto zokuhombisa umgangatho womgangatho wesakhiwo somgangatho ophezulu wodonga kunye nemigangatho yamatye, kunye nokuhombisa umphezulu weentsika kunye nezikhumbuzo.
3. Ishishini leMichiza yemihla ngemihla
I-sodium carboxymethyl cellulose yi-viscosifier yozinzo eguquguqukayo enokusetyenziswa kwiimveliso ezahlukeneyo.Kwiimveliso zokuncamathelisa ezinemathiriyeli eyomeleleyo yomgubo, idlala indima ebalulekileyo ekusasazeni nasekumisweni kokumiswa.Kwizinto zokuthambisa zolwelo okanye ze-emulsion, isebenza njengokujiya, ukusasaza, kunye ne-homogenizing agent.Le cellulose iphuma kwi-cellulose inokusebenza njenge-emulsion stabilizer, i-ointment kunye ne-shampoo thickener kunye ne-stabilizer, i-toothpaste adhesive stabilizer, kunye ne-detergent thickener kunye ne-anti-stain agent.I-sodium carboxymethyl hydroxypropyl cellulose, uhlobo lwe-cellulose ether, lusetyenziswa ngokubanzi njenge-stabilizer ye-toothpaste ngenxa yeempawu zayo ze-thixotropic, ezinceda ukugcina ukubunjwa kwe-toothpaste kunye nokuhambelana.Le derivative iyakwazi ukumelana netyuwa kunye ne-asidi, iyenza ibe yi-thickener esebenzayo kwi-detergents kunye ne-anti-stain agents.I-sodium carboxymethyl cellulose isetyenziswa ngokuqhelekileyo njenge-dirt dispersant, i-thickener, kunye ne-disperant ekuveliseni umgubo wokuhlamba kunye ne-liquid detergents.
4. Amayeza kunye neshishini lokutya
Kumashishini axuba amayeza, i-Ibang hydroxypropyl carboxymethylcellulose (HPMC) isetyenziswa kakhulu njengendawo ephuma kwichiza lokukhutshwa elilawulwa ngomlomo kunye namalungiselelo okukhulula azinzileyo.Isebenza njengento yokubuyisela ukukhululwa ukulawula ukukhutshwa kwamachiza, kwaye njengento yokugquma ukulibazisa ukukhululwa kweefomyula.I-Methyl carboxymethyl cellulose kunye ne-ethyl carboxymethyl cellulose zidla ngokusetyenziswa ukwenza iipilisi kunye ne-capsules, okanye ukugquma iipilisi ezifakwe iswekile.Kumzi-mveliso wokutya, i-premium grade cellulose ethers zi-thickeners ezisebenzayo, izizinzi, izincedisi, iiarhente zokugcina amanzi kunye neearhente zokugaya amagwebu ekutyeni okwahlukeneyo.I-Methylcellulose kunye ne-hydroxypropylmethylcellulose zithathwa njenge-inert ye-metabolically inert kwaye zikhuselekile ukuba zisetyenziswe.I-carboxymethylcellulose ecocekileyo inokongezwa kwiimveliso zokutya, kubandakanywa ubisi kunye ne-cream, i-condiments, i-jams, i-jelly, ukutya okusemathinini, isiraphu yetafile kunye neziselo.Ukongeza, i-carboxymethyl cellulose ingasetyenziselwa ukuthutha kunye nokugcinwa kweziqhamo ezitsha njengengubo yeplastiki, enika umphumo ococekileyo wokugcina, ungcoliseko oluncinci, akukho monakalo, kunye nokuveliswa okulula komatshini.
5. Izinto eziSebenzayo zoMbane kunye nezoMbane
I-high-purity cellulose ether ene-asidi elungileyo kunye nokuxhathisa ityuwa isebenza njenge-electrolyte thickening stabilizer, ibonelela ngeempawu ze-colloidal ezizinzileyo kwiibhetri ze-alkaline kunye ne-zinc-manganese.Ezinye i-cellulose ethers zibonisa ulwelo lwe-thermotropic crystallinity, efana ne-hydroxypropyl cellulose acetate, eyenza iikristale zolwelo lwe-cholesteric ngaphantsi kwe-164°C.
Isalathiso esiPhambili
● Isichazi-magama seMichiza.
● Iimpawu, ukulungiswa kunye nokusetyenziswa kwefektri ye-cellulose ether.
● Ubume be-Quo kunye neNdlela yoPhuhliso ye-Cellulose Ether Market.
