I-putty powder iqulunqwe ikakhulu ngezinto ezenza ifilimu (izinto ezidibanisayo), izihluzi, ii-agent ezigcina amanzi, i-thickeners, i-defoamers, njl njl. Izinto eziqhelekileyo ze-organic organic raw ekrwada kwi-putty powder ziquka: i-cellulose, isitashi se-pregelatinized, isitashi se-ether, i-polyvinyl alcohol, i-disperible latex powder, njl njl. Ukusebenza kunye nokusetyenziswa kweekhemikhali ezahlukeneyo zemathiriyeli ekrwada zicazululwa nganye nganye ngezantsi.
I-1: Inkcazo kunye nokwahlukana kwefiber, i-cellulose kunye ne-cellulose ether
IFayibha (US: Ifayibha; IsiNgesi: Ifayibha) ibhekisa kwinto eyenziwe yimicu eqhubekayo okanye engaqhubekiyo. Njengefayibha yezityalo, iinwele zezilwanyana, ifayibha yesilika, ifayibha yokwenziwa, njl.
I-Cellulose yi-macromolecular polysaccharide eyenziwe yi-glucose kwaye iyona nxalenye yesakhiwo seendonga zeeseli zesityalo. Kwiqondo lobushushu begumbi, iselulosi ayinyibiliki emanzini okanye kwizinyibilikisi eziqhelekileyo eziphilayo. Umxholo we-cellulose wekotoni usondele kwi-100%, okwenza kube ngumthombo wendalo ococekileyo we-cellulose. Ngomthi jikelele, i-cellulose i-akhawunti ye-40-50%, kwaye kukho i-10-30% ye-hemicellulose kunye ne-20-30% ye-lignin. Umahluko phakathi kweselulosi (ekunene) kunye nesitatshi (ekhohlo):
Ngokuqhelekileyo, zombini isitashi kunye ne-cellulose yi-macromolecular polysaccharides, kwaye i-molecular formula ingabonakaliswa njenge (C6H10O5) n. Ubunzima bemolekyuli ye-cellulose bukhulu kunobo besitatshi, kwaye i-cellulose inokubola ukuze ivelise isitashi. I-cellulose yi-D-glucose kunye ne-β-1,4 glycoside I-polysaccharides ye-Macromolecular eyakhiwe ngamabhondi, ngelixa isitashi senziwa yi-α-1,4 glycosidic bonds. I-Cellulose ngokuqhelekileyo ayinayo i-branched, kodwa isitashi sifakwe kwi-1,6 glycosidic bonds. I-cellulose ayinyibiliki kakuhle emanzini, ngelixa isitashi sinyibilika emanzini ashushu. I-Cellulose ayinamvakalelo kwi-amylase kwaye ayijiki luhlaza okwesibhakabhaka xa isesichengeni se-iodine.
Igama lesiNgesi le-cellulose ether yi-cellulose ether, eyikhompawundi ye-polymer enesakhiwo se-ether esenziwe nge-cellulose. Yimveliso yokusabela kweekhemikhali zeselulosi (isityalo) kunye ne-etherification agent. Ngokutsho kokuhlelwa kweekhemikhali ze-substituent emva kwe-etherification, inokwahlulwa ibe yi-anionic, i-cationic kunye ne-nonionic ethers. Ngokuxhomekeke kwi-etherification agent esetyenzisiweyo, kukho 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, njl. Kwishishini lokwakha, i-cellulose ether ikwabizwa ngokuba yi-cellulose, igama elingaqhelekanga, kwaye libizwa ngokuba yi-cellulose (okanye i-ether) ngokuchanekileyo. Indlela yokujiya ye-cellulose ether thickener I-Cellulose ether thickener yinto engeyiyo i-ionic thickener, ethi ijiye ngakumbi ngokufakwa kwamanzi kunye nokubhijela phakathi kweeathom. Ikhonkco le-polymer ye-cellulose ether kulula ukwenza ibhondi ye-hydrogen ngamanzi emanzini, kwaye ibhondi ye-hydrogen yenza ukuba ibe ne-hydration ephezulu kunye ne-inter-molecular entanglement.
Xa i-cellulose ether thickener yongezwa kwipeyinti ye-latex, ithatha inani elikhulu lamanzi, ibangela ukuba umthamo wayo ukhule kakhulu, unciphisa indawo yamahhala yee-pigments, iifayili kunye neengqungquthela ze-latex; ngelo xesha, i-cellulose ether i-molecular chain chain idibene ukuze yenze i-network network structure, kunye nombala we-Fillers kunye ne-latex particles zifakwe phakathi kwe-mesh kwaye azikwazi ukuhamba ngokukhululekile. Ngaphantsi kwezi ziphumo zimbini, i-viscosity yenkqubo iphuculwe! Siphumelele isiphumo sokutyeba ebesifuna!
Iselulosi eqhelekileyo (ether): Ngokubanzi, iselulosi kwimarike ibhekisa kwihydroxypropyl, ihydroxyethyl isetyenziselwa ipeyinti, ipeyinti yelatex, kunye nehydroxypropyl methylcellulose isetyenziselwa udaka, putty kunye nezinye iimveliso. I-Carboxymethyl cellulose isetyenziselwa i-putty powder eqhelekileyo kwiindonga zangaphakathi. I-Carboxymethyl cellulose, ekwaziwa njenge-sodium carboxymethyl cellulose, ekubhekiselwa kuyo njenge-(CMC): ICarboxymethyl cellulose (CMC) yi-non-toxic, i-flocculent powder emhlophe engenavumba kunye nokusebenza okuzinzileyo kwaye inyibilika lula emanzini. Ialkaline okanye ialkaline transparent viscous liquid, enyibilikayo kwezinye iiglues ezinyibilikayo emanzini kunye neeresini, ezinganyibilikiyo kwizinyibilikisi zezinto eziphilayo ezifana ne-ethanol. I-CMC ingasetyenziswa njenge-binder, i-thickener, i-agent exhomayo, i-emulsifier, i-dispersant, i-stabilizer, i-agent yokulinganisa, njl njl. , eyaziwa njenge "industrial monosodium glutamate". I-Carboxymethyl cellulose inemisebenzi yokubopha, ukuqina, ukuqinisa, ukufakwa kwe-emulsifying, ukugcinwa kwamanzi kunye nokumiswa. 1. Ukusetyenziswa kwe-sodium carboxymethyl cellulose kwishishini lokutya: i-sodium carboxymethyl cellulose ayikho kuphela i-emulsification stabilizer efanelekileyo kunye ne-thickener kwizicelo zokutya, kodwa iphinde ibe neqhwa elihle kakhulu kunye nokuzinza kokunyibilika, kwaye inokuphucula I-flavour yemveliso yandisa ixesha lokugcina. 2. Ukusetyenziswa kwe-sodium carboxymethyl cellulose kumashishini amayeza: ingasetyenziselwa njenge-emulsion stabilizer ye-injection, i-binder kunye ne-agent-forming agent yeepilisi kwi-shishini lamachiza. 3. I-CMC ingasetyenziswa njenge-anti-setting agent, i-emulsifier, i-dispersant, i-agent yokulinganisa, kunye ne-adhesive for coatings. Inokwenza umxholo oqinileyo wokugquma usasazwe ngokulinganayo kwi-solvent, ukwenzela ukuba i-coating ingabikho ixesha elide. Ikwasetyenziswa ngokubanzi kwipeyinti. 4. I-sodium carboxymethyl cellulose ingasetyenziswa njenge-flocculant, i-agent ye-chelating, i-emulsifier, i-thickener, i-ejenti yokugcina amanzi, i-ejenti yokulinganisa, ifilimu yokwenza ifilimu, njl. Ishishini lemichiza yokusetyenziswa mihla le kunye nezinye iindawo, kwaye ngenxa yokusebenza kwayo okugqwesileyo kunye noluhlu olubanzi losetyenziso, ihlala iphuhlisa usetyenziso olutsha. amasimi, kwaye ithemba lemarike libanzi kakhulu. Imizekelo yesicelo: udonga lwangaphandle lwe-putty powder formula yangaphakathi eludongeni lwe-putty powder formula 1 Shuangfei powder: 600-650kg 1 Shuangfei powder: 1000kg 2 Isamente emhlophe: 400-350kg 2 isitashi se-Pregelatinized: 5-6kg 3 isitashi se-Pregelatinized: 5 -6kg 103 CMC: -15kg okanye HPMC2.5-3kg4 I-CMC: 10-15kg okanye HPMC2.5-3kg I-Putty powder yongeze i-carboxymethyl cellulose CMC, ukusebenza kwestatshi esele iselenziwe ngaphambili: ① Inokwazi ukutyeba ngokukhawuleza; ukusebenza kwebhondi, kunye nokugcinwa kwamanzi athile; ② Ukuphucula ikhono lokuchasa ukutyibilika (i-sagging) yezinto eziphathekayo, ukuphucula ukusebenza kwezinto eziphathekayo, kunye nokwenza umsebenzi ube lula; ukwandisa ixesha lokuvulwa kwezinto. ③ Emva kokumisa, umphezulu ugudile, awuweli kumgubo, uneempawu ezintle zokwenza ifilimu kwaye akukho mikrwelo. ④ Okubaluleke ngakumbi, idosi encinci, kwaye idosi ephantsi kakhulu inokufezekisa umphumo ophezulu; ngelo xesha, iindleko zokuvelisa ziyancipha malunga ne-10-20%. Kushishino lokwakha, i-CMC isetyenziswa ekuveliseni iipreforms zekhonkrithi, ezinokuthi zinciphise ilahleko yamanzi kwaye zisebenze njenge-retarder. Nangona ukwakhiwa okukhulu, kunokuphucula amandla ekhonkrithi kwaye kuququzelele i-preforms ukuba ziwe kwi-membrane. Enye injongo ephambili kukukrazula udonga olumhlophe kunye ne-putty powder, i-putty paste, enokugcina izinto ezininzi zokwakha kunye nokuphucula umgangatho wokukhusela kunye nokukhanya kodonga. IHydroxyethyl methylcellulose, ekubhekiselwa kuyo njenge (HEC): ifomula yemichiza:
1. Intshayelelo kwi-cellulose ye-hydroxyethyl: I-Hydroxyethyl cellulose (HEC) yi-ether ye-cellulose engekho i-ionic eyenziwe kwi-cellulose yezinto ze-polymer yendalo ngokusebenzisa uchungechunge lweenkqubo zemichiza. Ayinavumba, ingenancasa, i-powder emhlophe engenatyhefu okanye i-granule, enokuthi inyibilike emanzini abandayo ukwenza isisombululo se-viscous esicacileyo, kwaye ukuchithwa akuchaphazeli ixabiso le-pH. Inokuqina, ukubopha, ukusabalalisa, i-emulsifying, ifilimu-ifom, ukumisa, i-adsorbing, i-surface esebenzayo, igcina ukufuma kunye neempawu zetyuwa.
2. Iimpawu zobuchwephesha Umgangatho weprojekthi Imbonakalo emhlophe okanye engumgubo otyheli Ukutshintshwa kweMolar (MS) 1.8-2.8 Umbandela onganyibilikiyo wamanzi (%) ≤ 0.5 Ilahleko ekomisweni (WT%) ≤ 5.0 Intsalela ekutshisweni (WT%) ≤ 5.0 PH ixabiso 6.0-8. Viscosity (mPa.s) 2%, 30000, 60000, 100000 isisombululo se-aqueous kwi-20 ° C Ezintathu, iingenelo ze-hydroxyethyl cellulose Isiphumo esiphezulu sokuqina
● I-cellulose ye-Hydroxyethyl ibonelela ngeempawu ezigqwesileyo zokugquma kwiingubo ze-latex, ngokukodwa iingubo eziphezulu ze-PVA. Akukho flocculation eyenzekayo xa ipeyinti iyisakhiwo esityebileyo.
● Iselulosi yeHydroxyethyl inefuthe eliphezulu lokujiya. Inokunciphisa umthamo, iphucule uqoqosho lwefomula, kwaye iphucule ukuxhathisa ukukhuhla kwengubo.
Iimpawu ezigqwesileyo ze-rheological
● Isisombululo samanzi se-hydroxyethyl cellulose yinkqubo engeyiyo ye-Newtonian, kwaye ipropati yesisombululo sayo ibizwa ngokuba yi-thixotropy.
● Kwimeko ye-static, emva kokuba imveliso ichithwe ngokupheleleyo, inkqubo yokwambathisa igcina eyona nto ibhetele yokuqina kunye nokuvula.
● Kwimeko yokuthulula, inkqubo igcina i-viscosity ephakathi, ukwenzela ukuba imveliso ibe ne-fluidity egqwesileyo kwaye ayiyi kutshiza.
● Xa isetyenziswe ngebrashi kunye ne-roller, imveliso isasazeka ngokulula kwi-substrate. Ikulungele ukwakhiwa. Kwangaxeshanye, inokumelana kakuhle nokuchaphaza.
● Ekugqibeleni, emva kokuba i-coating igqityiwe, i-viscosity yenkqubo iphinda ibuyele ngokukhawuleza, kwaye i-coating iyancipha ngokukhawuleza.
I-Dispersibility kunye nokunyibilika
● I-Hydroxyethyl cellulose iphathwa ngokuchithwa kokulibaziseka, okunokuthintela ngokufanelekileyo i-agglomeration xa umgubo owomileyo wongezwa. Emva kokuqinisekisa ukuba i-HEC powder ihlakazeke kakuhle, qalisa i-hydration.
● I-cellulose ye-Hydroxyethyl ngonyango olufanelekileyo lomphezulu inokulungelelanisa izinga lokuchithwa kunye nesantya sokwandisa i-viscosity yemveliso.
uzinzo lokugcina
● I-Hydroxyethyl cellulose ineempawu ezilungileyo zokulwa nokukhunda kwaye inika ixesha elaneleyo lokugcina ipeyinti. Ikhusela ngokufanelekileyo ii-pigments kunye nezihluzi ekuzinziseni. 4. Indlela yokusebenzisa: (1) Yongeza ngokuthe ngqo ngexesha lemveliso Le ndlela yeyona ilula kwaye ithatha ixesha elifutshane. La manyathelo alandelayo: 1. Yongeza amanzi acocekileyo kwi-emele enkulu enesixhobo sokucheba esiphakamileyo. 2. Qala ukuvuselela ngokuqhubekayo ngesantya esiphantsi kwaye usihluze ngokukhawuleza i-hydroxyethyl cellulose kwisisombululo ngokulinganayo. 3. Qhubeka uvuselela de onke amaqhekeza afakwe emanzini. 4. Emva koko yongeza i-agent ye-antifungal kunye nezongezo ezahlukeneyo. Ezifana nee-pigments, ii-aids zokusabalalisa, amanzi e-ammonia, njl. 5. Gxuma de yonke i-cellulose ye-hydroxyethyl ichithwe ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokuba ungeze amanye amacandelo kwifomula yokusabela. (2) Lungisa utywala bukamama ukuze busetyenziswe: Le ndlela kukulungisa utywala bukamama obunomlinganiselo ophakamileyo kuqala, uze ubongeze kwimveliso. Inzuzo yale ndlela kukuba inokuguquguquka okukhulu kwaye inokongezwa ngokuthe ngqo kwimveliso egqityiweyo, kodwa kufuneka igcinwe ngokufanelekileyo. Amanyathelo afana namanyathelo (1-4) kwindlela (1): umehluko kukuba akukho-high-shear agitator efunekayo, kuphela ezinye ii-agitators ezinamandla ngokwaneleyo ukugcina i-hydroxyethyl cellulose ihlakazeke ngokufanayo kwisisombululo, qhubeka uvuselela de uchithe ngokupheleleyo. kwisisombululo se-viscous. Kufuneka kuqatshelwe ukuba i-agent ye-antifungal kufuneka yongezwe kumama otywala ngokukhawuleza. V. Isicelo 1. Isetyenziswe kwipeyinti ye-latex yamanzi: i-HEC, njenge-colloid ekhuselayo, ingasetyenziselwa kwi-vinyl acetate emulsion polymerization ukuphucula ukuzinza kwenkqubo ye-polymerization kwiindidi ezininzi ze-pH. Ekwenziweni kweemveliso ezigqityiweyo, izongezo ezinje ngebala kunye nezihluzi zisetyenziselwa ukusabalalisa ngokufanayo, ukuzinzisa kunye nokubonelela ngeziphumo zokuqina. Isenokusetyenziswa njenge-dispersant kwiipolymers ezimisiweyo ezifana ne-styrene, i-acrylate, kunye ne-propylene. Ukusetyenziswa kwipeyinti ye-latex kunokuphucula kakhulu ukutyeba kunye nokusebenza komgangatho. 2. Ngokubhekiselele kwi-oyile yokugaya: i-HEC isetyenziswe njenge-thickener kwiidaka ezahlukeneyo ezifunekayo ekubhobhozeni, ukulungiswa kakuhle, ukusebenza kwe-cementing kunye ne-fracturing, ukwenzela ukuba udaka lukwazi ukufumana i-fluidity enhle kunye nokuzinza. Ukuphucula umthamo wokuthwala udaka ngexesha lokugaya, kwaye uthintele umthamo omkhulu wamanzi ukuba ungangeni kwi-oyile ye-oyile ukusuka eludakeni, uzinzise amandla okuvelisa i-oyile. 3. Isetyenziselwa ukwakhiwa kwezakhiwo kunye nezixhobo zokwakha: Ngenxa yokugcinwa kwamanzi okunamandla, i-HEC i-thickener esebenzayo kunye ne-binder ye-samente slurry kunye nodaka. Inokuxutywa kwidaka ukuphucula ulwelo kunye nokusebenza kokwakhiwa, kunye nokwandisa ixesha lokunyuka kwamanzi , Ukuphucula amandla okuqala ekhonkrithi kwaye ugweme ukuqhekeka. Inokuphucula ngokubonakalayo ugcino lwamanzi kunye namandla okudibanisa xa isetyenziselwa ukutyabeka, udaka oludibanisayo, kunye ne-plaster putty. 4. Isetyenziswe kwi-toothpaste: ngenxa yokumelana kwayo netyuwa kunye ne-asidi, i-HEC inokuqinisekisa ukuzinza kwe-toothpaste. Ukongezelela, i-toothpaste ayilula ukomisa ngenxa yokugcinwa kwamanzi okunamandla kunye nokukwazi ukumisa. 5. Xa isetyenziswe kwi-inki esekelwe emanzini, i-HEC inokwenza i-inki yome ngokukhawuleza kwaye ingabonakali. Ukongeza, i-HEC isetyenziswa ngokubanzi kushicilelo lwelaphu kunye nokudaya, ukwenza iphepha, iikhemikhali zemihla ngemihla njalo njalo. 6. Izilumkiso zokusebenzisa i-HEC: a. Hygroscopicity: Zonke iintlobo ze-hydroxyethyl cellulose HEC ziyi-hygroscopic. Isiqulatho samanzi ngokuqhelekileyo singaphantsi kwe-5% xa ushiya umzi-mveliso, kodwa ngenxa yeendawo ezahlukeneyo zokuhamba kunye nokugcinwa, umthamo wamanzi uya kuba phezulu kunaxa ushiya umzi-mveliso. Xa uyisebenzisa, vele ulinganise umxholo wamanzi kwaye ukhuphe ubunzima bamanzi xa ubala. Musa ukuyibonisa emoyeni. b. I-powder yothuli iyaqhuma: ukuba zonke ii powders eziphilayo kunye ne-hydroxyethyl cellulose powder powder zisemoyeni kwinqanaba elithile, ziya kuqhushumba xa zidibana nendawo yomlilo. Ukusebenza ngokufanelekileyo kufuneka kwenziwe ukuphepha umgubo wothuli emoyeni kangangoko kunokwenzeka. 7. Iimpawu zokupakisha: Imveliso yenziwe ngengxowa yeplastiki yeplastiki ehlanganiswe ne-polyethylene yangaphakathi, kunye nobunzima be-25 kg. Gcina kwindawo enomoya kunye neyomileyo ngaphakathi kwindlu xa ugcina, kwaye ubeke ingqalelo kumswakama. Nika ingqalelo kwimvula kunye nokukhuselwa kwelanga ngexesha lokuthutha. IHydroxypropyl methyl cellulose, ekubhekiselwa kuyo njenge (HPMC): i-hydroxypropyl methyl cellulose (HPMC) yimpuphu emhlophe engenavumba, engenancasa, engenatyhefu, kukho iindidi ezimbini zomgubo okhawulezayo nongaphazamisiyo, ngoko nangoko, Xa udityaniswa namanzi abandayo, ukhawuleza. iyahlakazeka kwaye iphele emanzini. Ngeli xesha, i-liquid ayinayo i-viscosity. Emva kwemizuzu emi-2, i-viscosity ye-liquid iyanda, yenza i-colloid ebonakalayo ebonakalayo. Uhlobo olungekho ngoko nangoko: Inokusetyenziswa kuphela kwiimveliso zomgubo owomileyo ezifana nomgubo weputty kunye nodaka lwesamente. Ayinakusetyenziswa kwiglue yolwelo kunye nepeyinti, kwaye kuya kubakho i-clumping.
Ixesha lokuposa: Dec-26-2022