Impushana ye-putty yakhiwa ikakhulukazi izinto zokwakha ifilimu (izinto ezibophayo), izigcwalisi, ama-ejenti agcina amanzi, ama-thickeners, ama-defoamers, njll. Izinto ezisetshenziswayo ezivamile zamakhemikhali emvelo ku-putty powder zihlanganisa ikakhulukazi: i-cellulose, isitashi esandulela i-pregelatinized, isitashi ether, i-polyvinyl alcohol, Impushana ye-latex ehlakazekayo, njll. Ukusebenza nokusetshenziswa kwamakhemikhali ezinhlobonhlobo zezinto ezingavuthiwe kuhlaziywa ngayinye ngayinye ngezansi.
1: Incazelo kanye nomehluko we-fiber, i-cellulose ne-cellulose ether
I-Fiber (US: Fiber; English: Fiber) ibhekisela entweni eyakhiwe imicu eqhubekayo noma engaqhubeki. Okufana ne-plant fiber, izinwele zezilwane, i-silika fiber, i-synthetic fiber, njll.
I-Cellulose iyi-macromolecular polysaccharide eyakhiwe nge-glucose futhi iyisakhi esiyinhloko sezindonga zamaseli ezitshalo. Ezingeni lokushisa lasekamelweni, i-cellulose ayincibiliki emanzini noma kuzincibilikisi ezivamile. Okuqukethwe kwe-cellulose kukotini kusondele ku-100%, okwenza kube umthombo wemvelo omsulwa we-cellulose. Ngokhuni jikelele, i-cellulose i-akhawunti ye-40-50%, futhi kukhona i-10-30% ye-hemicellulose kanye ne-20-30% ye-lignin. Umehluko phakathi kwe-cellulose (kwesokudla) nesitashi (kwesokunxele):
Ngokuvamile, kokubili isitashi kanye ne-cellulose ama-macromolecular polysaccharides, futhi ifomula ye-molecular ingavezwa ngokuthi (C6H10O5) n. Isisindo samangqamuzana e-cellulose sikhulu kunesitashi, futhi i-cellulose ingabola ukuze ikhiqize isitashi. I-cellulose i-D-glucose kanye ne-β-1,4 glycoside Macromolecular polysaccharides eyakhiwe ngamabhondi, kuyilapho isitashi sakhiwe ngamabhondi e-α-1,4 glycosidic. I-Cellulose ngokuvamile ayinawo amagatsha, kodwa isitashi sihlanganiswa ngamabhondi angu-1,6 e-glycosidic. I-Cellulose ayincibiliki kahle emanzini, kuyilapho isitashi sincibilika emanzini ashisayo. I-Cellulose ayizweli ku-amylase futhi ayijiki ibe luhlaza okwesibhakabhaka lapho ichayeke ku-iodine.
Igama lesiNgisi le-cellulose ether yi-cellulose ether, okuyinhlanganisela ye-polymer enesakhiwo se-ether esenziwe nge-cellulose. Kungumkhiqizo wokusabela kwamakhemikhali we-cellulose (isitshalo) nge-ejenti ye-etherification. Ngokuya ngesigaba sesakhiwo samakhemikhali se-substitute ngemva kokufakwa kwe-etherification, ingahlukaniswa ibe ama-anionic, cationic kanye nama-nonionic ether. Ngokuya nge-ejenti ye-etherification esetshenzisiwe, kukhona i-methyl cellulose, i-hydroxyethyl methyl cellulose, i-carboxymethyl cellulose, i-ethyl cellulose, i-benzyl cellulose, i-hydroxyethyl cellulose, i-hydroxypropyl methyl cellulose cellulose, i-cyanoethyl cellulose, i-benzyl cyanoethyl carulose cellulose i-cellulose, njll. Embonini yokwakha, i-cellulose ether ibizwa nangokuthi i-cellulose, okuyigama elingavamile, futhi ibizwa ngokuthi i-cellulose (noma i-ether) ngendlela efanele. Indlela yokujiya ye-cellulose ether thickener I-cellulose ether thickener iyisigqinsi esingeyona i-ionic, esijiya kakhulu ngokufakwa kwamanzi kanye nokugoqana phakathi kwama-molecule. Iketango le-polymer le-cellulose ether kulula ukwakha isibopho se-hydrogen emanzini emanzini, futhi isibopho se-hydrogen siyenza ibe nokugeleza okuphezulu kwe-hydration kanye ne-inter-molecular entanglement.
Lapho i-cellulose ether thickener yengezwa kupende lwe-latex, idonsa amanzi amaningi, okwenza ivolumu yayo ikhule kakhulu, inciphisa isikhala samahhala se-pigments, fillers kanye nezinhlayiya ze-latex; ngesikhathi esifanayo, amaketanga e-cellulose ether yamangqamuzana ahlanganiswe ukuze enze isakhiwo senethiwekhi esinezinhlangothi ezintathu, futhi ama-Fillers ombala kanye nezinhlayiya ze-latex zivalelwe phakathi kwe-mesh futhi azikwazi ukugeleza ngokukhululekile. Ngaphansi kwale miphumela emibili, i-viscosity yesistimu iyathuthukiswa! Kuzuzwe umphumela wokujiya ebesiwudinga!
I-cellulose evamile (i-ether): Ngokuvamile, i-cellulose emakethe ibhekisela ku-hydroxypropyl, i-hydroxyethyl isetshenziselwa kakhulu upende, upende we-latex, kanti i-hydroxypropyl methylcellulose isetshenziselwa udaka, i-putty neminye imikhiqizo. I-Carboxymethyl cellulose isetshenziselwa i-putty powder evamile ezindongeni zangaphakathi. I-Carboxymethyl cellulose, eyaziwa nangokuthi i-sodium carboxymethyl cellulose, ebizwa ngokuthi (i-CMC): I-Carboxymethyl cellulose (CMC) iyimpushana entantayo engenabuthi, engenaphunga esebenza ngokuzinzile futhi inyibilika kalula emanzini. I-alkaline noma i-alkaline transparent viscous liquid, encibilika kwezinye iglue nama-resin ancibilika emanzini, ayincibiliki kuzincibilikisi zemvelo njenge-ethanol. I-CMC ingasetshenziswa njenge-binder, i-thickener, i-ejenti emisayo, i-emulsifier, i-disperant, i-stabilizer, i-ejenti yokulinganisa, njll. I-Carboxymethyl cellulose (CMC) iwumkhiqizo onokukhipha okukhulu kakhulu, uhla olubanzi kakhulu lokusetshenziswa, kanye nokusetshenziswa okulula kakhulu phakathi kwama-cellulose ethers. , ngokuvamile eyaziwa ngokuthi “industrial monosodium glutamate”. I-Carboxymethyl cellulose inemisebenzi yokubopha, ukuqina, ukuqinisa, ukufaka i-emulsifying, ukugcinwa kwamanzi nokumiswa. 1. Ukusetshenziswa kwe-sodium carboxymethyl cellulose embonini yokudla: i-sodium carboxymethyl cellulose ayiyona nje i-emulsification stabilizer enhle kanye ne-thickener ezinhlelweni zokudla, kodwa futhi inokuqina okuhle kakhulu kweqhwa nokuncibilika, futhi ingathuthukisa Ukunambitheka komkhiqizo kwandisa isikhathi sokugcina. 2. Ukusetshenziswa kwe-sodium carboxymethyl cellulose embonini yezemithi: ingasetshenziswa njenge-emulsion stabilizer yemijovo, i-binder kanye ne-ejenti eyenza ifilimu yamaphilisi embonini yezemithi. 3. I-CMC ingasetshenziswa njenge-ejenti ephikisana nokuxazulula, i-emulsifier, i-dispersant, i-ejenti yokulinganisa, kanye ne-adhesive for coatings. Ingenza okuqukethwe okuqinile kwe-coating kusatshalaliswe ngokulinganayo ku-solvent, ukuze ukugqoka kungagcini isikhathi eside. Ibuye isetshenziswe kabanzi kupende. 4. I-sodium carboxymethyl cellulose ingasetshenziswa njenge-flocculant, i-chelating agent, i-emulsifier, i-thickener, i-ejenti yokugcina amanzi, i-ejenti yokulinganisa, ifilimu yokwakha ifilimu, njll. Ibuye isetshenziswe kabanzi kuma-electronics, izibulala-zinambuzane, isikhumba, amapulasitiki, ukuphrinta, izitsha zobumba, Imboni yamakhemikhali esetshenziswa nsuku zonke kanye neminye imikhakha, futhi ngenxa yokusebenza kwayo okuhle kakhulu nobubanzi bokusetshenziswa kwayo, ihlale ithuthukisa uhlelo olusha lokusebenza. amasimu, futhi ithemba lemakethe libanzi kakhulu. Izibonelo zohlelo lokusebenza: ifomula yangaphandle ye-putty powder ifomula yangaphakathi yodonga lwe-putty powder formula 1 I-Shuangfei powder: 600-650kg 1 Shuangfei powder: 1000kg 2 usimende omhlophe: 400-350kg 2 isitashi esakhiwe ngaphambili: 5-6kg 3 isitashi se-Pregelatinized: 5 -6kg 103 CMC: -15kg noma HPMC2.5-3kg4 I-CMC: 10-15kg noma HPMC2.5-3kg Putty powder yengezwe i-carboxymethyl cellulose CMC, ukusebenza kwesitashi esenziwe ngaphambili: ① Inekhono elihle lokujiya ngokushesha; ukusebenza kwebhondi, nokugcinwa kwamanzi okuthile; ② Thuthukisa amandla okumelana nokushelela (ukuhlehla) kwento, uthuthukise ukusebenza kwento, futhi wenze umsebenzi ube bushelelezi; andise isikhathi sokuvula sento. ③ Ngemuva kokoma, ingaphezulu libushelelezi, aliweli ku-powder, linezici ezinhle zokwenza ifilimu futhi akukho mihuzuko. ④ Okubaluleke nakakhulu, umthamo mncane, futhi umthamo ophansi kakhulu ungafinyelela umphumela ophezulu; ngesikhathi esifanayo, izindleko zokukhiqiza ziyancipha cishe ngo-10-20%. Embonini yezokwakha, i-CMC isetshenziswa ekukhiqizeni ama-preforms aphathekayo, anganciphisa ukulahleka kwamanzi futhi asebenze njengesinciphisi. Ngisho nokwakhiwa okukhulu, kungase futhi kuthuthukise amandla kakhonkolo futhi kube lula ukuthi ama-preforms awele kulwelwesi. Enye inhloso eyinhloko ukukhuhla udonga olumhlophe kanye ne-putty powder, i-putty paste, engasindisa izinto eziningi zokwakha futhi ithuthukise isendlalelo sokuzivikela nokukhanya kodonga. IHydroxyethyl methylcellulose, ebizwa ngokuthi (HEC): ifomula yamakhemikhali:
1. Isingeniso se-hydroxyethyl cellulose: I-Hydroxyethyl cellulose (HEC) iyi-ether ye-cellulose engeyona i-ionic eyenziwe nge-cellulose yezinto ze-polymer yemvelo ngochungechunge lwezinqubo zamakhemikhali. Kuyimpushana emhlophe engenaphunga, enganambitheki, engenabuthi noma imbudumbudu, engancibilika emanzini abandayo ukuze kwakheke isixazululo se-viscous esisobala, futhi ukuncibilika akuthintwa inani le-pH. Inokuqina, ukubopha, ukuhlakaza, ukufaka i-emulsifying, ukwenza ifilimu, ukumisa okwesikhashana, i-adsorbing, indawo esebenzayo, egcina umswakama kanye nezindawo ezivimbela usawoti.
2. Izinkomba zobuchwepheshe Ukubukeka okujwayelekile kwephrojekthi Ukubukeka kwempushana emhlophe noma ephuzi Ukushintsha i-Molar (MS) 1.8-2.8 Into engancibiliki emanzini (%) ≤ 0.5 Ukulahlekelwa lapho omiswe (WT%) ≤ 5.0 Insalela ekushiseni (WT%) ≤ 5.0 PH value 6.0-8. I-Viscosity (mPa.s) 2%, 30000, 60000, 100000 isixazululo samanzi ku-20°C Ezintathu, izinzuzo ze-hydroxyethyl cellulose Umphumela wokujiya ophezulu
● I-Hydroxyethyl cellulose inikeza izici ezinhle kakhulu zokugqoka ze-latex, ikakhulukazi i-PVA ephezulu. Akukho flocculation okwenzekayo lapho upende kuyinto isakhiwo obukhulu.
● I-Hydroxyethyl cellulose inomphumela wokujiya ophezulu. Inganciphisa umthamo, ithuthukise umnotho wefomula, futhi ithuthukise ukumelana nokukhuhla kokunamathela.
Izici ezinhle kakhulu ze-rheological
● Isixazululo esinamanzi se-hydroxyethyl cellulose siwuhlelo okungelona olwase-Newton, futhi indawo yesixazululo salo ibizwa ngokuthi i-thixotropy.
● Esimeni esimile, ngemva kokuba umkhiqizo usuhlakazwe ngokuphelele, uhlelo lokumboza lugcina isimo esihle kakhulu sokuqina nokuvula.
● Esimeni sokuthulula, isistimu igcina i-viscosity emaphakathi, ukuze umkhiqizo ube ne-fluidity enhle kakhulu futhi ngeke uchithe.
● Uma isetshenziswa ngebhulashi nerola, umkhiqizo usakazeka kalula ku-substrate. Ilungele ukwakhiwa. Ngesikhathi esifanayo, inokumelana okuhle kwe-splash.
● Ekugcineni, ngemva kokuqedwa koqweqwe, i-viscosity yesistimu ilulama ngokushesha, futhi ukugqoka ngokushesha kuyancibilika.
I-Dispersibility kanye ne-Solubility
● I-Hydroxyethyl cellulose iphathwa ngokuqedwa ukubambezeleka, okungavimbela ngempumelelo i-agglomeration lapho i-powder eyomile yengezwa. Ngemuva kokuqinisekisa ukuthi i-HEC powder ihlakazeke kahle, qala ukugeleza kwamanzi.
● I-Hydroxyethyl cellulose ngokwelashwa okufanelekile kwendawo ingalungisa izinga lokuncibilika kanye nezinga lokwenyuka kwe-viscosity lomkhiqizo.
ukuzinza kwesitoreji
● I-Hydroxyethyl cellulose inezici ezinhle zokunqanda isikhutha futhi inikeza isikhathi esanele sokulondoloza upende. Ivimbela ngokuphumelelayo ama-pigments nama-filler ukuthi angahlali. 4. Isetshenziswa kanjani: (1) Engeza ngokuqondile ngesikhathi sokukhiqiza Le ndlela ilula kakhulu futhi ithatha isikhathi esifushane kakhulu. Izinyathelo zimi kanje: 1. Faka amanzi ahlanzekile ebhakedeni elikhulu elifakwe i-shear agitator ephezulu. 2. Qala ukunyakazisa ngokuqhubekayo ngesivinini esiphansi bese uhlunga kancane kancane i-hydroxyethyl cellulose esixazululweni ngokulinganayo. 3. Qhubeka ugqugquzela kuze kube yilapho zonke izinhlayiya sezicwile. 4. Bese wengeza i-ejenti ye-antifungal kanye nezithasiselo ezihlukahlukene. Okufana nezingulube, izinsiza zokusabalalisa, amanzi e-ammonia, njll. 5. Gcoba kuze kube yilapho yonke i-hydroxyethyl cellulose ichitheka ngokuphelele (i-viscosity yesisombululo ikhula kakhulu) ngaphambi kokwengeza ezinye izingxenye kufomula yokusabela. (2) Lungiselela uphuzo lukamama oluzosetshenziswa: Le ndlela iwukulungisa ugologo kamama ngobungako obuningi kuqala, bese ubufaka emkhiqizweni. Inzuzo yale ndlela yukuthi inokuguquguquka okukhulu futhi ingafakwa ngokuqondile kumkhiqizo ophelile, kodwa kufanele igcinwe kahle. Izinyathelo ziyefana nezinyathelo (1–4) ngendlela (1): umehluko wukuthi asikho isikhwezeli-shear esiphezulu esidingekayo, ama-agitator athile kuphela anamandla anele okugcina i-hydroxyethyl cellulose ihlakazeke ngokufanayo esixazululweni, qhubeka nokunyakazisa kuze kuqedwe ngokuphelele. ibe isixazululo viscous. Kumele kuqashelwe ukuthi i-ejenti ye-antifungal kufanele yengezwe kugologo kamama ngokushesha ngangokunokwenzeka. V. Isicelo 1. Isetshenziselwa upende we-latex osekelwe emanzini: I-HEC, njenge-colloid evikelayo, ingasetshenziswa ku-vinyl acetate emulsion polymerization ukuze kuthuthukiswe ukuzinza kwesistimu ye-polymerization kumanani amaningi we-pH. Ekwenziweni kwemikhiqizo eqediwe, izithasiselo ezinjengama-pigments nama-filler zisetshenziselwa ukuhlakazeka ngokufanayo, ukuzinza nokuhlinzeka ngemiphumela yokuqina. Ingasetshenziswa futhi njenge-disperant yama-polymers amisiwe njenge-styrene, i-acrylate, ne-propylene. Kusetshenziswa ngopende we-latex kungathuthukisa kakhulu ukuqina nokusebenza kwezinga. 2. Mayelana nokumba uwoyela: I-HEC isetshenziswa njenge-thickener odakeni oluhlukahlukene oludingekayo ukuze kubhojwe, ukulungisa kahle, ukusebenza kahle kukasimende nokuqhekeka, ukuze udaka lukwazi ukuthola uketshezi oluhle nokuzinza. Thuthukisa umthamo wokuthwala udaka ngesikhathi sokumba, futhi uvimbele inani elikhulu lamanzi ukuthi lingangeni ungqimba lwamafutha odakeni, uzinzise amandla okukhiqiza ungqimba lwamafutha. 3. Isetshenziselwa ukwakhiwa kwezakhiwo nezinto zokwakha: Ngenxa yomthamo wayo oqinile wokugcina amanzi, i-HEC iwugqinsi olusebenzayo kanye nesibopho sodaka lukasimende nodaka. Ingaxutshwa nodaka ukuze kuthuthukiswe uketshezi nokusebenza kokwakhiwa, nokwandisa isikhathi sokuhwamuka kwamanzi , Thuthukisa amandla okuqala kakhonkolo futhi ugweme imifantu. Ingathuthukisa ngokuphawulekayo ukugcinwa kwayo kwamanzi namandla okubopha lapho isetshenziselwa ukupulasitela, ukhonkolo oluhlanganisayo, ne-plaster putty. 4. Isetshenziswe ku-toothpaste: ngenxa yokumelana kwayo okuqinile nosawoti kanye ne-asidi, i-HEC ingaqinisekisa ukuzinza kwe-toothpaste. Ngaphezu kwalokho, umuthi wokuxubha akulula ukomisa ngenxa yokugcinwa kwawo okuqinile kwamanzi kanye nekhono lokufaka i-emulsifying. 5. Uma isetshenziswa kuyinki osekelwe emanzini, i-HEC ingenza uyinki wome ngokushesha futhi ungangeni. Ngaphezu kwalokho, i-HEC iphinde isetshenziswe kabanzi ekunyatheliseni izindwangu nokudaya, ukwenza amaphepha, amakhemikhali ansuku zonke nokunye. 6. Izinyathelo zokuqapha ngokusebenzisa i-HEC: a. I-Hygroscopicity: Zonke izinhlobo ze-hydroxyethyl cellulose HEC ziyi-hygroscopic. Amanzi ngokuvamile angaphansi kuka-5% lapho ephuma efekthri, kodwa ngenxa yezindawo zokuthutha ezihlukene nezindawo zokulondoloza, okuqukethwe kwamanzi kuzoba phezulu kunalapho uphuma efekthri. Uma uyisebenzisa, vele ulinganise okuqukethwe kwamanzi futhi ukhiphe isisindo samanzi lapho ubala. Ungakuvezi emkhathini. b. Impushana yothuli iyaqhuma: uma zonke izimpushana eziphilayo kanye ne-hydroxyethyl cellulose powder powder zisemoyeni ngesilinganiso esithile, zizoqhuma futhi lapho zihlangana nendawo yomlilo. Ukusebenza kahle kufanele kwenziwe ukugwema uthuli oluyimpushana emkhathini ngangokunokwenzeka. 7. Imininingwane yokupakisha: Umkhiqizo wenziwe ngesikhwama esiyinhlanganisela yephepha-yepulasitiki esifakwe isikhwama sangaphakathi se-polyethylene, esinesisindo esinetha esingama-25 kg. Gcina endaweni engenawo umoya neyomile endlini lapho ugcina, futhi unake umswakama. Naka ukuvikelwa kwemvula nelanga ngesikhathi sokuthutha. IHydroxypropyl methyl cellulose, ebizwa nge-(HPMC): i-hydroxypropyl methyl cellulose (HPMC) iyimpushana emhlophe engenaphunga, enganambitheki, engenabuthi, kunezinhlobo ezimbili zempushana esheshayo nengasheshi, esheshayo, Uma ihlangana namanzi abandayo, isheshe. ahlakazeke anyamalale emanzini. Ngalesi sikhathi, uketshezi alunayo i-viscosity. Ngemuva kwemizuzu emi-2, i-viscosity ye-liquid iyanda, yakha i-viscous colloid ebonakalayo. Uhlobo olungasheshi: Lungasetshenziswa kuphela emikhiqizweni yempushana eyomile njengempushana ephutshayo kanye nodaka lukasimende. Ngeke isetshenziswe ku-glue ewuketshezi nopende, futhi kuzoba ne-clumping.
Isikhathi sokuthumela: Dec-26-2022