1. Chidule:
Ma cellulose ether ndi chilengedwe cha polima pawiri, kapangidwe kake ka mankhwala ndi polysaccharide macromolecule yochokera ku anhydrous β-glucose, ndipo pali gulu limodzi loyambirira la hydroxyl ndi magulu awiri achiwiri a hydroxyl pa mphete iliyonse. Kupyolera mu kusintha kwa mankhwala, mndandanda wa zotumphukira za cellulose zitha kupezeka, ndipo cellulose ether ndi amodzi mwa iwo. Cellulose ether ndi polima pawiri ndi efa dongosolo zopangidwa mapaipi, monga methyl cellulose, ethyl mapadi, hydroxyethyl mapadi, hydroxypropyl mapadi, carboxymethyl mapadi, etc. Nthawi zambiri, akhoza analandira ndi zochita za alkali mapadi ndi monochloroalkane, ethylene okusayidi. , propylene oxide kapena monochloroacetic acid.
2. Magwiridwe ndi mawonekedwe:
(1) Maonekedwe
Cellulose ether nthawi zambiri imakhala yoyera kapena yoyera ngati yamkaka, yopanda fungo, yopanda poizoni, ufa wamadzimadzi wonyezimira, wosavuta kuyamwa chinyezi, ndipo umasungunuka kukhala colloid yowoneka bwino ya viscous khola m'madzi.
(2) Kupanga mafilimu ndi kumamatira
The etherification wa mapadi ether ali ndi chikoka chachikulu pa makhalidwe ake ndi ntchito, monga solubility, filimu kupanga luso, chomangira mphamvu ndi kukana mchere. Ma cellulose ether ali ndi mphamvu zamakina apamwamba, kusinthasintha, kukana kutentha ndi kukana kuzizira, ndipo amagwirizana bwino ndi ma resin osiyanasiyana ndi mapulasitiki, ndipo angagwiritsidwe ntchito kupanga mapulasitiki, mafilimu, ma varnish, zomatira, latex ndi Zida zokutira mankhwala, etc.
(3) Kusungunuka
Methylcellulose amasungunuka m'madzi ozizira, osasungunuka m'madzi otentha, komanso amasungunuka m'madzi ena osungunulira organic; methyl hydroxyethyl cellulose imasungunuka m'madzi ozizira, osasungunuka m'madzi otentha ndi zosungunulira za organic. Komabe, njira yamadzimadzi ya methylcellulose ndi methylhydroxyethylcellulose ikatenthedwa, methylcellulose ndi methylhydroxyethylcellulose zidzayamba. Methylcellulose imatsika pa 45-60 ° C, pamene kutentha kwa mpweya wa etherified methyl hydroxyethyl cellulose kumawonjezeka kufika 65-80 ° C. Kutenthako kukatsitsidwa, mpweyawo umasungunukanso. Hydroxyethyl mapadi ndi sodium carboxymethyl hydroxyethyl mapadi amasungunuka m'madzi pa kutentha kulikonse ndi insoluble mu organic solvents.
(4) kukhuthala
Ma cellulose ether amasungunuka m'madzi mu mawonekedwe a colloidal, ndipo kukhuthala kwake kumadalira kuchuluka kwa polymerization ya cellulose ether. The yankho lili hydrated macromolecules. Chifukwa cha kulowetsedwa kwa ma macromolecules, machitidwe otaya mayankho amasiyana ndi a Newtonian fluids, koma amasonyeza khalidwe lomwe limasintha ndi kusintha kwa mphamvu yometa ubweya. Chifukwa cha mawonekedwe a macromolecular a cellulose ether, kukhuthala kwa yankho kumawonjezeka kwambiri ndikuwonjezeka kwa ndende ndikucheperako mwachangu ndi kuwonjezeka kwa kutentha.
Kugwiritsa ntchito
(1) Makampani amafuta
Sodium carboxymethyl cellulose imagwiritsidwa ntchito kwambiri pochotsa mafuta, ndipo imagwiritsidwa ntchito popanga matope kuti awonjezere kukhuthala komanso kuchepetsa kutayika kwa madzi. Ikhoza kukana kuipitsidwa kwa mchere wambiri wosungunuka ndikuwonjezera kuchira kwa mafuta. Sodium carboxymethyl hydroxypropyl cellulose (NaCMHPC) ndi sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC) ndi zabwino kubowola matope mankhwala wothandizira ndi zipangizo pokonzekera madzi amamaliza, ndi mkulu slurrying mlingo ndi kukana mchere, Good odana ndi kashiamu ntchito, zabwino mamasukidwe akayendedwe-kuchuluka mphamvu, kutentha kukana. (160 ℃) katundu. Ndizoyenera kukonzekera madzi obowola madzi abwino, madzi a m'nyanja ndi madzi amchere odzaza. Itha kupangidwa kukhala madzi akubowola osiyanasiyana kachulukidwe (103-127g/cm3) polemera kashiamu kolorayidi, ndipo imakhala ndi kukhuthala kwina ndi kutayika kwamadzimadzi otsika, kuthekera kwake kowonjezera kukhuthala komanso kuchepa kwamadzimadzi ndikosavuta kuposa hydroxyethyl cellulose. , ndipo ndi chowonjezera chabwino chowonjezera kupanga mafuta.
Sodium carboxymethyl cellulose ndi chochokera ku cellulose chomwe chimagwiritsidwa ntchito kwambiri pochotsa mafuta. Amagwiritsidwa ntchito pobowola madzimadzi, cementing fluid, fracturing fluid komanso kukonzanso mafuta, makamaka pobowola madzimadzi. Imagwira makamaka kuchepetsa kutayika kwamadzimadzi ndikuwonjezera kukhuthala. Hydroxyethyl cellulose (HEC) imagwiritsidwa ntchito ngati matope okhuthala komanso okhazikika pobowola, kumaliza bwino komanso kuyika simenti. Poyerekeza ndi sodium carboxymethyl cellulose ndi guar chingamu, hydroxyethyl cellulose imakhala yabwino kukhuthala, kuyimitsa mchenga wamphamvu, kuchuluka kwa mchere, kukana kutentha, kukana kusakanikirana pang'ono, kutaya madzi pang'ono, komanso kusweka kwa gel. Block, zotsalira zochepa ndi zina, zakhala zikugwiritsidwa ntchito kwambiri.
(2) Makampani omanga ndi utoto
Sodium carboxymethyl cellulose angagwiritsidwe ntchito ngati retarder, madzi posungira wothandizila, thickener ndi binder pomanga zomangamanga ndi pulasitala matope admixtures, ndipo angagwiritsidwe ntchito ngati pulasitala, matope ndi nthaka mokweza zipangizo gypsum m'munsi ndi m'munsi simenti Amagwiritsidwa ntchito ngati dispersant, madzi. kusunga wothandizira ndi thickener. Kuphatikizika kwapadera kwamiyala ndi pulasitala yopangidwa ndi carboxymethyl cellulose, yomwe imatha kupititsa patsogolo magwiridwe antchito, kusunga madzi komanso kukana kwamatope, ndikupewa kusweka ndi kuphulika pakhoma. ng'oma. Zipangizo zodzikongoletsera pamwamba pa nyumba Cao Mingqian ndi ena adapanga zokometsera zokhala ndi chilengedwe kuchokera ku methyl cellulose. Njira yopanga ndi yosavuta komanso yoyera. Itha kugwiritsidwa ntchito pamakoma apamwamba komanso pamiyala yamwala, komanso ingagwiritsidwe ntchito kukongoletsa pamwamba pazipilala ndi zipilala.
(3) Makampani opanga mankhwala tsiku ndi tsiku
The stabilizing viscosifier sodium carboxymethyl cellulose amatenga gawo lobalalitsa ndi kuyimitsidwa kukhazikika muzinthu zopangira phala zamafuta olimba a ufa, ndipo amatenga gawo lokulitsa, kubalalitsa ndi homogenizing muzodzola zamadzimadzi kapena emulsion. Itha kugwiritsidwa ntchito ngati stabilizer ndi tackifier. Emulsion stabilizers amagwiritsidwa ntchito ngati emulsifiers, thickeners ndi stabilizer kwa mafuta odzola ndi shampoos.Sodium carboxymethyl hydroxypropyl mapadiangagwiritsidwe ntchito ngati stabilizer kwa zomatira otsukira mano. Ili ndi katundu wabwino wa thixotropic, womwe umapangitsa kuti mankhwala azitsamba aziwoneka bwino, kusungidwa kwanthawi yayitali popanda kupindika, komanso kukoma kofananira komanso kosakhwima. Sodium carboxymethyl hydroxypropyl cellulose imakhala ndi kukana kwa mchere wapamwamba komanso kukana kwa asidi, ndipo zotsatira zake zimakhala zapamwamba kwambiri kuposa za carboxymethyl cellulose. Itha kugwiritsidwa ntchito ngati thickener mu zotsukira komanso anti-stain agent. Dispersion thickener popanga zotsukira, sodium carboxymethylcellulose nthawi zambiri amagwiritsidwa ntchito ngati dispersant dothi pochapa ufa, thickener ndi dispersant kwa zotsukira madzi.
(4) Makampani opanga mankhwala ndi zakudya
M'makampani opanga mankhwala, hydroxypropyl carboxymethylcellulose (HPMC) ingagwiritsidwe ntchito ngati chothandizira mankhwala, chomwe chimagwiritsidwa ntchito kwambiri pakamwa pakamwa mankhwala osokoneza bongo kumasulidwa ndi kukonzekera kumasulidwa kosalekeza, monga kutulutsidwa kwa zinthu zomwe zimalepheretsa kutulutsidwa kwa mankhwala, monga zophimba kuti achedwetse Kutulutsidwa. ma formulations, ma pellets otulutsa nthawi yayitali, makapisozi otulutsa nthawi yayitali. Zomwe zimagwiritsidwa ntchito kwambiri ndi methyl carboxymethyl cellulose ndi ethyl carboxymethyl cellulose, monga MC, zomwe nthawi zambiri zimagwiritsidwa ntchito popanga mapiritsi ndi makapisozi, kapena kupaka mapiritsi okhala ndi shuga. Ma ethers a cellulose a premium atha kugwiritsidwa ntchito m'makampani azakudya, ndipo ndi zolimbitsa thupi, zolimbitsa thupi, zowonjezera, zosungira madzi ndi mawotchi otulutsa thovu muzakudya zosiyanasiyana. Methyl cellulose ndi hydroxypropyl methyl cellulose zadziwika ngati zinthu zopanda vuto za metabolic inert. Kuyera kwambiri (pamwamba pa 99.5%) carboxymethylcellulose (CMC) ikhoza kuwonjezeredwa ku chakudya, monga mkaka ndi zonona zonona, zokometsera, jamu, odzola, zakudya zamzitini, madzi a tebulo ndi zakumwa. Carboxymethyl cellulose yokhala ndi chiyero chopitilira 90% imatha kugwiritsidwa ntchito pazinthu zokhudzana ndi chakudya, monga kunyamula ndi kusunga zipatso zatsopano. Kukulunga kwa pulasitiki kotereku kuli ndi ubwino wosunga bwino mwatsopano, kuwononga pang'ono, kusawonongeka, komanso kupanga makina osavuta.
(5) Optical ndi magetsi ntchito zipangizo
Electrolyte thickening stabilizer ali mkulu chiyero cha mapadi efa, zabwino asidi kukana ndi mchere kukana, makamaka otsika chitsulo ndi heavy metal okhutira, kotero colloid ndi khola kwambiri, oyenera mabatire zamchere, nthaka-manganese mabatire Electrolyte thickening stabilizer. Ma cellulose ethers ambiri amawonetsa thermotropic liquid crystallinity. Hydroxypropyl cellulose acetate imapanga thermotropic cholesteric liquid makhiristo pansi pa 164°C.
Nthawi yotumiza: Jan-12-2023