Putty phofo e entsoe haholo ka lintho tse etsang filimi (lisebelisoa tsa bonding), li-filler, li-agent tse bolokang metsi, li-thickeners, defoamers, joalo-joalo. Lisebelisoa tse tloaelehileng tsa lik'hemik'hale tse entsoeng ka phofo ea putty haholo-holo li kenyelletsa: cellulose, starch pregelatinized, starch ether, polyvinyl alcohol, dispersible latex powder, joalo-joalo Ts'ebetso le ts'ebeliso ea lisebelisoa tse fapaneng tsa lik'hemik'hale tse tala li hlahlojoa ka bonngoe ka tlase.
1: Tlhaloso le phapang ea fiber, cellulose le cellulose ether
Fiber (US: Fiber; English: Fiber) e bolela ntho e entsoeng ka likhoele tse sa khaotseng kapa tse sa khaotseng. Joalo ka fiber ea semela, moriri oa liphoofolo, fiber ea silika, fiber ea maiketsetso, jj.
Cellulose ke macromolecular polysaccharide e entsoeng ka tsoekere 'me ke karolo ea mantlha ea sebopeho sa marako a lisele tsa semela. Mochesong oa kamore, selulose ha e qhibilihe ka metsing kapa ka har'a lihlapolli tse tloaelehileng. Likahare tsa cellulose tsa k'hothone li haufi le 100%, e leng se etsang hore e be mohloli o hloekileng oa tlhaho oa cellulose. Ka kakaretso lehong, selulose e etsa 40-50%, 'me ho na le 10-30% ea hemicellulose le 20-30% lignin. Phapang pakeng tsa cellulose (ka ho le letona) le starch (ka ho le letšehali):
Ka kakaretso, starch le cellulose ke macromolecular polysaccharides, 'me foromo ea molek'hule e ka hlalosoa e le (C6H10O5) n. Boima ba limolek'hule ba selulose bo boholo ho feta ba starch, 'me cellulose e ka bola ho hlahisa starch. Cellulose ke D-glucose le β-1,4 glycoside Macromolecular polysaccharides e entsoeng ka litlamo, ha starch e thehoa ke α-1,4 glycosidic bonds. Cellulose ka kakaretso ha e na makala, empa starch e na le makala a 1,6 a glycosidic. Cellulose ha e qhibilihe hantle ka metsing, athe starch eona e qhibiliha metsing a chesang. Cellulose ha e utloe ho amylase 'me ha e fetohe putsoa ha e pepesehetse iodine.
Lebitso la Senyesemane la cellulose ether ke cellulose ether, e leng motsoako oa polymer o nang le sebopeho sa ether se entsoeng ka selulose. Ke sehlahisoa sa karabelo ea lik'hemik'hale ea cellulose (semela) e nang le etherification agent. Ho ea ka sebopeho sa lik'hemik'hale tsa motsoako ka mor'a etherification, e ka aroloa ka anionic, cationic le nonionic ethers. Ho itšetlehile ka etherification agent e sebelisitsoeng, ho na le methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose cellulose, cyanoethyl cellulose, benzyl cyanoethyl carulose, benzyl cyanoethyl carulose cellulose, joalo-joalo indastering ea kaho, cellulose ether e boetse e bitsoa cellulose, e leng lebitso le sa tloaelehang, 'me le bitsoa cellulose (kapa ether) ka nepo. Thickening mechanism of cellulose ether thickener Polymer chain ea cellulose ether e bonolo ho theha bond ea hydrogen le metsi ka metsing, 'me bond ea haedrojene e etsa hore e be le hydration e phahameng le ho kenella ha limolek'hule.
Ha cellulose ether thickener e kenngoa penteng ea latex, e nka metsi a mangata, e etsa hore molumo oa eona o atolohe haholo, o fokotsa sebaka sa mahala sa li-pigments, li-fillers le likaroloana tsa latex; ka nako e ts'oanang, liketane tsa limolek'hule tsa cellulose ether li kopantsoe ho etsa sebopeho sa marang-rang a mararo, 'me li-Fillers tsa mebala le likaroloana tsa latex li koaletsoe bohareng ba letlooeng' me li ke ke tsa phalla ka bolokolohi. Tlas'a liphello tsena tse peli, viscosity ea tsamaiso e ntlafatsoa! E fihletse phello e teteaneng eo re e hlokang!
Selulose e tloaelehileng (ether): Ka kakaretso, cellulose 'marakeng e bua ka hydroxypropyl, hydroxyethyl e sebelisoa haholo bakeng sa pente, pente ea latex,' me hydroxypropyl methylcellulose e sebelisoa bakeng sa seretse, putty le lihlahisoa tse ling. Carboxymethyl cellulose e sebelisoa bakeng sa phofo e tloaelehileng ea putty bakeng sa marako a ka hare. Carboxymethyl cellulose, eo hape e tsejoang e le sodium carboxymethyl cellulose, eo ho thoeng ke (CMC): Carboxymethyl cellulose (CMC) ke phofshoana e tšoeu e se nang chefo, e se nang monko e nang le ts'ebetso e tsitsitseng 'me e qhibiliha habonolo metsing. Mokelikeli o bonaletsang oa alkaline kapa oa alkaline, o qhibilihang ka har'a likhomaretsi tse ling tse qhibilihang metsing le lirekeni, tse sa qhibiliheng linthong tse hlapollang tse kang ethanol. CMC e ka sebelisoa e le binder, thickener, suspending agent, emulsifier, dispersant, stabilizer, sizing agent, joalo-joalo Carboxymethyl cellulose (CMC) ke sehlahisoa se nang le tlhahiso e kholo ka ho fetisisa, mefuta e mengata ka ho fetisisa ea tšebeliso, le tšebeliso e bonolo ka ho fetisisa har'a cellulose ethers. , eo ka tloaelo e tsejoang e le “industrial monosodium glutamate”. Carboxymethyl cellulose e na le mesebetsi ea ho tlama, ho tiisa, ho matlafatsa, ho etsa emulsifying, ho boloka metsi le ho emisa. 1. Kopo ea sodium carboxymethyl cellulose indastering ea lijo: sodium carboxymethyl cellulose hase feela emulsification e ntle ea stabilizer le thickener ha ho sebelisoa lijo, empa e boetse e na le serame se babatsehang le botsitso ba ho qhibiliha, 'me e ka ntlafatsa Tatso ea sehlahisoa e lelefatsa nako ea polokelo. 2. Tšebeliso ea sodium carboxymethyl cellulose indastering ea meriana: e ka sebelisoa e le emulsion stabilizer bakeng sa liente, binder le moemeli oa ho etsa filimi bakeng sa matlapa a indasteri ea meriana. 3. CMC e ka sebelisoa e le moemeli ea khahlanong le ho rarolla, emulsifier, dispersant, agent, le sekhomaretsi bakeng sa liphahlo. E ka etsa hore litaba tse tiileng tsa ho roala li arotsoe ka mokhoa o ts'oanang ho solvent, e le hore seaparo se se ke sa senya nako e telele. E boetse e sebelisoa haholo ka pente. 4. Sodium carboxymethyl cellulose e ka sebelisoa e le flocculant, chelating agent, emulsifier, thickener, waterretaining agent, sizing agent, filimi-forming material, joalo-joalo E boetse e sebelisoa haholo ho lisebelisoa tsa elektronike, chefo e bolaeang likokoanyana, letlalo, polasetiki, khatiso, ceramics, Indasteri ea lik'hemik'hale e sebelisoang letsatsi le letsatsi le likarolo tse ling, 'me ka lebaka la ts'ebetso ea eona e ntle haholo le mefuta e mengata ea ts'ebeliso, e lula e nts'etsapele ts'ebeliso e ncha. masimong, 'me tebello ea 'maraka e pharaletseng haholo. Mehlala ea kopo: bokantle ba lebota putty phofo foromo ka hare leboteng putty phofo foromo 1 Shuangfei phofo: 600-650kg 1 Shuangfei phofo: 1000kg 2 White samente: 400-350kg 2 Pregelatinized starch: 5-6kg 3 Pregelatinized starch: 5 -6kg 103 CMC: -15kg kapa HPMC2.5-3kg4 CMC: 10-15kg kapa HPMC2.5-3kg Putty powder e kentse carboxymethyl cellulose CMC, ts'ebetso ea starch ea pregelatinized: ① E na le bokhoni bo botle ba ho Tiea kapele; ts'ebetso ea bonding, le ho boloka metsi ho itseng; ② Ntlafatsa bokhoni bo khahlanong le ho thella (sagging) ea thepa, ho ntlafatsa ts'ebetso ea lisebelisoa, le ho etsa hore ts'ebetso e be bonolo; lelefatsa nako ya ho buloa hoa taba. ③ Ka mor'a ho omisa, bokaholimo bo boreleli, ha bo theohe phofo, bo na le thepa e ntle ea ho etsa filimi 'me ha ho na likhopo. ④ Habohlokoa le ho feta, litekanyetso li nyane, 'me tekanyo e tlase haholo e ka ba le phello e phahameng; ka nako e ts'oanang, litšenyehelo tsa tlhahiso li fokotsehile ka hoo e ka bang 10-20%. Ka indasteri ea kaho, CMC e sebelisoa tlhahisong ea li-preforms tsa konkreite, tse ka fokotsang tahlehelo ea metsi le ho sebetsa joalo ka tšitiso. Esita le bakeng sa kaho e kholo, e ka boela ea ntlafatsa matla a konkreite le ho thusa li-preforms ho oa ho tloha lera. Sepheo se seng se seholo ke ho senya lerako le lesoeu le phofo ea putty, peista ea putty, e ka bolokang thepa e ngata ea mohaho le ho ntlafatsa lera le sireletsang le ho khanya ha lebota. Hydroxyethyl methylcellulose, e bitsoang (HEC): foromo ea lik'hemik'hale:
1. Kenyelletso ea hydroxyethyl cellulose: Hydroxyethyl cellulose (HEC) ke ether ea cellulose e seng ea ionic e entsoeng ka selulose ea tlhaho ea polymer ka letoto la mekhoa ea lik'hemik'hale. Ke phofo e tšoeu e sa nkheng, e sa latsoeheng, e se nang chefo kapa granule, e ka qhibilihang metsing a batang ho etsa tharollo e hlakileng ea viscous, 'me ho qhibiliha ha ho amehe ke boleng ba pH. E na le ho tenya, ho tlama, ho qhalakanya, emulsifying, ho etsa filimi, ho emisa, ho bapatsa, ho sebetsa ka holim'a metsi, ho boloka mongobo le ho thibela letsoai.
2. Litsupa tsa tekheniki Tekanyetso ea Ponahalo Ponahalo ea phofo e tšoeu kapa e mosehla Molar substitution (MS) 1.8-2.8 Metsi a sa tsitsang (%) ≤ 0.5 Tahlehelo ha o omisa (WT%) ≤ 5.0 Masala ka ho khantša (WT%) ≤ 5.0 PH bohlokoa 6.0- 8. Viscosity (mPa.s) 2%, 30000, 60000, 100000 tharollo ea metsi ka 20 ° C Tse tharo, melemo ea hydroxyethyl cellulose Matla a matla a phahameng
● Hydroxyethyl cellulose e fana ka thepa e babatsehang ea ho roala liaparo tsa latex, haholo-holo liaparo tse phahameng tsa PVA. Ha ho flocculation e etsahalang ha pente e le mohaho o teteaneng.
● Hydroxyethyl cellulose e na le phello e phahameng ea ho tiea. E ka fokotsa litekanyetso, ea ntlafatsa moruo oa foromo, 'me ea ntlafatsa khanyetso ea scrub ea ho roala.
Lintho tse ntle tsa rheological
● Tharollo ea metsi ea hydroxyethyl cellulose ke tsamaiso e seng ea Newtonian, 'me thepa ea tharollo ea eona e bitsoa thixotropy.
● Boemong bo tsitsitseng, ka mor'a hore sehlahisoa se qhibilihe ka ho feletseng, mokhoa oa ho roala o boloka boemo bo botle ka ho fetisisa ba ho tiisa le ho bula.
● Boemong ba ho tšela, tsamaiso e boloka viscosity e itekanetseng, e le hore sehlahisoa se be le metsi a mangata haholo 'me se se ke sa phatloha.
● Ha e sebelisoa ka borashe le rolara, sehlahisoa se ata habonolo holim'a substrate. E loketse kaho. Ka nako e ts'oanang, e na le khanyetso e ntle ea splash.
● Qetellong, ka mor'a hore seaparo se phethoe, viscosity ea tsamaiso e hlaphoheloa hang-hang, 'me ho roala hang-hang ho fokotseha.
Dispersibility le Solubility
● Hydroxyethyl cellulose e phekoloa ka ho lieha ho qhibiliha, e ka thibelang ka katleho ho kopanya ha phofo e omileng e kenngoa. Ka mor'a ho netefatsa hore phofo ea HEC e hasane hantle, qala ho nosetsa.
● Hydroxyethyl cellulose e nang le phekolo e nepahetseng ea holim'a metsi e ka khona ho fetola sekhahla sa ho qhibiliha le sekhahla sa ho eketseha ha viscosity ea sehlahisoa.
botsitso ba polokelo
● Hydroxyethyl cellulose e na le thepa e ntle ea ho thibela hlobo 'me e fana ka nako e lekaneng ea ho boloka pente. E thibela ka katleho li-pigments le li-filler ho rarolla. 4. Mokhoa oa ho sebelisa: (1) Eketsa ka ho toba nakong ea tlhahiso Mokhoa ona o bonolo ka ho fetisisa ebile o nka nako e khutšoanyane. Mehato ke e latelang: 1. Kenya metsi a hloekileng ka har'a bakete e kholo e nang le sehloekisi se phahameng sa ho kuta. 2. Qala ho sisinyeha ka ho tsoelang pele ka lebelo le tlaase 'me butle-butle u sefa hydroxyethyl cellulose ka tharollo e lekanang. 3. Tsoela pele ho sisinya ho fihlela likaroloana tsohle li kolobile. 4. Ebe u eketsa moemeli oa antifungal le li-additives tse sa tšoaneng. Tse kang li-pigments, lithuso tsa ho qhala, metsi a ammonia, joalo-joalo 5. Hlohlelletsa ho fihlela cellulose eohle ea hydroxyethyl e qhibiliha ka ho feletseng (viscosity ea tharollo e eketseha haholo) pele o eketsa likarolo tse ling ka mokhoa oa ho itšoara. (2) Lokisetsa joala ba 'm'e bakeng sa ho sebelisoa: Mokhoa ona ke ho lokisa joala ba 'm'e ka tekanyo e phahameng pele, ebe oe eketsa sehlahisoa. Molemo oa mokhoa ona ke hore o na le phetoho e kholoanyane 'me e ka kenyelletsoa ka ho toba sehlahisoa se phethiloeng, empa se tlameha ho bolokoa hantle. Mehato e tšoana le mehato (1-4) ka mokhoa (1): phapang ke hore ha ho na moferefere o phahameng oa ho kuta o hlokahalang, ke li-agitator tse ling feela tse nang le matla a lekaneng ho boloka hydroxyethyl cellulose ka mokhoa o ts'oanang e qhalakantsoeng ka tharollo, tsoela pele ho hlohlelletsa ho fihlela e qhibiliha ka ho feletseng. ho kena tharollong ea viscous. Ho lokela ho hlokomeloa hore moemeli oa antifungal o tlameha ho eketsoa ho 'mè oa joala kapele kamoo ho ka khonehang. V. Kopo ea 1. E sebelisoa ka pente ea latex e thehiloeng metsing: HEC, e le colloid e sireletsang, e ka sebelisoa ka vinyl acetate emulsion polymerization ho ntlafatsa botsitso ba tsamaiso ea polymerization ka mefuta e mengata ea pH ea boleng. Ha ho etsoa lihlahisoa tse feliloeng, li-additives tse kang li-pigment le li-fillers li sebelisetsoa ho hasanya ka mokhoa o ts'oanang, ho tsitsisa le ho fana ka liphello tse teteaneng. E ka boela ea sebelisoa e le dispersant bakeng sa ho fanyeha polymers tse kang styrene, acrylate, le propylene. E sebelisitsoeng ka pente ea latex e ka ntlafatsa haholo ts'ebetso ea ho tiea le ho lekanya. 2. Mabapi le ho cheka oli: HEC e sebelisoa e le motenya ka har'a seretse se sa tšoaneng se hlokahalang bakeng sa ho cheka, ho lokisa seliba, ts'ebetso ea samente le ea fracturing, e le hore seretse se ka fumana metsi a mangata le botsitso. Ntlafatsa bokhoni ba ho jara seretse nakong ea ho cheka, le ho thibela metsi a mangata ho kena lera la oli ho tloha seretseng, ho tsitsisa bokhoni ba tlhahiso ea lera la oli. 3. E sebelisoa mohahong oa mohaho le thepa ea mohaho: Ka lebaka la matla a eona a matla a ho boloka metsi, HEC e sebetsa ka katleho le ho kopanya seretse sa samente le seretse. E ka kopanngoa le seretse ho ntlafatsa ts'ebetso ea metsi le ts'ebetso ea kaho, le ho lelefatsa nako ea mouoane oa metsi , Ntlafatsa matla a pele a konkreite le ho qoba mapetsong. E ka ntlafatsa haholo ho boloka metsi le matla a tlamahano ha e sebelisetsoa ho lila samente, samente e kopanyang le samente putty. 4. E sebelisoa ka sesepa sa meno: ka lebaka la ho hanyetsa ka matla letsoai le asiti, HEC e ka netefatsa botsitso ba sesepa sa meno. Ho phaella moo, sesepa sa meno ha se bonolo ho omella ka lebaka la ho boloka metsi a matla le bokhoni ba emulsifying. 5. Ha e sebelisoa ka enke e thehiloeng metsing, HEC e ka etsa hore enke e ome ka potlako le e sa keneleng. Ho feta moo, HEC e boetse e sebelisoa haholo ho hatisa masela le ho daea, ho etsa pampiri, lik'hemik'hale tsa letsatsi le letsatsi joalo-joalo. 6. Litlhokomelo tsa ho sebelisa HEC: a. Hygroscopicity: Mefuta eohle ea hydroxyethyl cellulose HEC ke hygroscopic. Ka kakaretso metsi a ka tlase ho 5% ha a tloha fekthering, empa ka lebaka la libaka tse fapaneng tsa lipalangoang le polokelo, metsi a tla ba holimo ho feta ha a tloha fekthering. Ha u e sebelisa, leka feela hore na metsi ke afe 'me u tlose boima ba metsi ha u bala. Se ke oa E pepesetsa sepakapakeng. b. Phofo ea lerōle e phatloha: haeba phofo eohle ea organic le phofshoana ea lerōle ea hydroxyethyl cellulose e le moeeng ka tekanyo e itseng, e tla boela e phatlohe ha e kopana le ntlha ea mollo. Ts'ebetso e nepahetseng e lokela ho etsoa ho qoba phofo ea lerole sepakapakeng ka hohle kamoo ho ka khonehang. 7. Litlhaloso tsa ho paka: Sehlahisoa se entsoe ka mokotla o entsoeng ka pampiri-polasetiki o kentsoeng ka mokotla o ka hare oa polyethylene, o nang le boima ba 25 kg. Boloka sebakeng se nang le moea oa moea le o omileng ka tlung ha u boloka, 'me u ele hloko mongobo. Ela hloko tšireletso ea pula le letsatsi nakong ea lipalangoang. Hydroxypropyl methyl cellulose, e bitsoang (HPMC): hydroxypropyl methyl cellulose (HPMC) ke phofo e tšoeu e sa nkheng, e sa latsoeheng, e se nang chefo, ho na le mefuta e 'meli ea hang-hang le e sa potlakang, hang-hang, Ha e kopana le metsi a batang, e potlakile. e qhalakana ebe e nyamella ka metsing. Ka nako ena, mokelikeli ha o na viscosity. Ka mor'a metsotso e ka bang 2, viscosity ea mokelikeli e eketseha, e etsa "viscous colloid" e hlakileng. Mofuta o seng oa hang-hang: E ka sebelisoa feela lihlahisoa tsa phofo tse omeletseng tse kang putty powder le seretse sa samente. E ke ke ea sebelisoa ka sekhomaretsi sa metsi le pente, 'me ho tla ba le clumping.
Nako ea poso: Dec-26-2022