Ifu ya putty igizwe ahanini nibintu bikora firime (ibikoresho byo guhuza), ibyuzuza, ibikoresho bigumana amazi, kubyimbye, defoamers, nibindi. ifu ya latx ikwirakwizwa, nibindi. Imikorere nogukoresha ibikoresho fatizo bitandukanye bya chimique birasesengurwa umwe umwe hepfo.
1: Ibisobanuro n'itandukaniro rya fibre, selile na selile ether
Fibre (US: Fibre; Icyongereza: Fibre) bivuga ikintu kigizwe na filime ikomeza cyangwa idahagarara. Nka fibre yibimera, umusatsi winyamanswa, fibre ya silike, fibre synthique, nibindi.
Cellulose ni macromolecular polysaccharide igizwe na glucose kandi nikintu nyamukuru cyubaka urukuta rwibimera. Ku bushyuhe bwicyumba, selile ntishobora gushonga mumazi cyangwa mumashanyarazi asanzwe. Cellulose yibigize ipamba igera hafi 100%, bigatuma iba isoko nziza ya selile. Muri rusange ibiti, selile ifite 40-50%, kandi hariho 10-30% hemicellulose na 20-30% lignine. Itandukaniro riri hagati ya selile (iburyo) na krahisi (ibumoso):
Muri rusange, ibinyamisogwe na selile ni macromolecular polysaccharide, kandi formula ya molekile irashobora kugaragazwa nka (C6H10O5) n. Uburemere bwa molekuline ya selile nini kuruta iy'ibinyamisogwe, kandi selile irashobora kubora kugirango ikore ibinyamisogwe. Cellulose ni D-glucose na β-1,4 glycoside Macromolecular polysaccharide igizwe na bonds, mugihe ibinyamisogwe bigizwe na α-1,4 glycosidic. Cellulose muri rusange ntabwo ishami, ariko ibinyamisogwe byashamiwe na 1,6 glycosidic. Cellulose ntishobora gushonga mumazi, mugihe ibinyamisogwe bishonga mumazi ashyushye. Cellulose ntiyumva amylase kandi ntabwo ihinduka ubururu iyo ihuye na iyode.
Izina ry'icyongereza rya selulose ether ni selulose ether, ikaba polymer igizwe na ether imiterere ikozwe muri selile. Nibicuruzwa byimiti ya selile (igihingwa) hamwe na etherification agent. Ukurikije imiterere yimiti itondekanya ibyasimbuwe nyuma ya etherification, irashobora kugabanywamo anionic, cationic na nonionic ethers. Ukurikije imiti ya etherification yakoreshejwe, hariho methyl selulose, hydroxyethyl methyl selulose, carboxymethyl selulose, Ethyl selulose, benzyl selulose, hydroxyethyl selulose, hydroxypropyl methyl selulose selulose, cyanoethyl selulose, benzyl cyanoethyl selulose, carboxymethyl selile kubaka inganda, selile ether nayo yitwa selile, nizina ridasanzwe, kandi ryitwa selile (cyangwa ether) neza. Uburyo bwo kubyimba bwa selulose ether umubyimba wa Cellulose ether umubyimba ni umubyimba utari ionic, ubyimbye cyane bitewe na hydrata no guhuzagurika hagati ya molekile. Urunigi rwa polymer rwa selulose ether biroroshye gukora hydrogène hamwe namazi mumazi, kandi hydrogène ya hydrogène ituma igira hydrated nyinshi hamwe no guhuza molekile.
Iyo selile ya ether yibyibushye yongewe kumarangi ya latex, ikurura amazi menshi, bigatuma ubwinshi bwayo bwaguka cyane, bikagabanya umwanya wubusa kuri pigment, kuzuza nuduce twa latex; icyarimwe, urunigi rwa selile ya ether ya molekuline irahujwe kugirango ikore urwego rwibice bitatu, kandi ibara ryuzuza hamwe nuduce twa latex bifunze hagati ya mesh kandi ntibishobora gutembera mubwisanzure. Munsi yizi ngaruka zombi, viscosity ya sisitemu iratera imbere! Yageze ku ngaruka zo kubyimba twari dukeneye!
Cellulose isanzwe (ether): Muri rusange, selile mu isoko bivuga hydroxypropyl, hydroxyethyl ikoreshwa cyane cyane mu gusiga irangi, irangi rya latex, na hydroxypropyl methylcellulose ikoreshwa kuri minisiteri, putty nibindi bicuruzwa. Carboxymethyl selulose ikoreshwa kumashanyarazi asanzwe kurukuta rwimbere. Carboxymethyl selulose, izwi kandi nka sodium carboxymethyl selulose, bita (CMC): Carboxymethyl selulose (CMC) ni ifu idafite uburozi, impumuro nziza yera ya flocculent ifite imikorere ihamye kandi byoroshye gushonga mumazi. Amazi ya alkaline cyangwa alkaline ibonerana neza ya viscous fluid, gushonga mubindi bikoresho bifata amazi hamwe na resin, bidashonga mumashanyarazi kama nka Ethanol. CMC irashobora gukoreshwa nka binder, kubyimbye, guhagarika agent, emulsifier, dispersant, stabilisateur, sizing agent, nibindi. Carboxymethyl selulose (CMC) nigicuruzwa gifite umusaruro mwinshi, uburyo bwagutse bwo gukoresha, hamwe no gukoresha byoroshye muri ethers ya selile. , bakunze kwita “inganda monosodium glutamate”. Carboxymethyl selulose ifite imirimo yo guhuza, kubyimba, gushimangira, kwigana, gufata amazi no guhagarika. . . 3. Irashobora gukora ibintu bihamye byigitambaro bikwirakwijwe neza, kugirango igipfundikizo kidasiba igihe kirekire. Irakoreshwa kandi cyane mu gusiga irangi. 4. Buri munsi-ukoresha inganda zikora imiti nizindi nzego, kandi kubera imikorere yayo myiza nuburyo butandukanye bwo gukoresha, ihora itezimbere imirima mishya ikoreshwa, kandi ibyifuzo byisoko ni binini cyane. Ingero zokurikizwa: urukuta rwinyuma rwamavuta yifu yimbere Urukuta rwamavuta yifu 1 Ifu ya Shuangfei: 600-650kg 1 Ifu ya Shuangfei: 1000kg 2 sima yera: 400-350kg 2 Ibinyamisogwe byateganijwe: 5-6kg 3 Ibinyamisogwe byateguwe: 5 -6kg 3 CMC: 10 -15kg cyangwa HPMC2.5-3kg4 CMC: 10-15kg cyangwa HPMC2.5-3kg Ifu ya Putty yongeyeho carboxymethyl selulose CMC, progaramu ya krahisi ikora: ① Ifite ubushobozi bwihuse bwo kubyimba; imikorere ihuza, hamwe no kubika amazi; Kunoza ubushobozi bwo kurwanya kunyerera (sagging) bwibikoresho, kunoza imikorere yimikorere yibikoresho, no gukora neza; ongera igihe cyo gufungura ibikoresho. ③ Nyuma yo gukama, hejuru iroroshye, ntigwa ifu, ifite imiterere myiza yo gukora firime kandi nta gushushanya. Icy'ingenzi cyane, dosiye ni nto, kandi igipimo gito cyane gishobora kugera ku ngaruka ndende; icyarimwe, igiciro cy'umusaruro kigabanukaho hafi 10-20%. Mu nganda zubaka, CMC ikoreshwa mugukora ibicuruzwa bifatika, bishobora kugabanya igihombo cyamazi kandi ikora nkicyadindiza. Ndetse kubwubatsi bunini, burashobora kandi kunoza imbaraga za beto no koroshya preforms kugwa muri membrane. Indi ntego nyamukuru ni ugukuraho urukuta rwera nifu ya putty, paste paste, ishobora kubika ibikoresho byinshi byubwubatsi no kuzamura urwego rukingira nubucyo bwurukuta. Hydroxyethyl methylcellulose, bita (HEC): amata yimiti:
. Ni impumuro nziza, idafite uburyohe, ifu yera cyangwa granule idafite uburozi, ishobora gushonga mumazi akonje kugirango ibe igisubizo kibonerana kibonerana, kandi iseswa ntirigerwaho nigiciro cya pH. Ifite umubyimba, guhambira, gutatanya, kwigana, gukora firime, guhagarika, kwamamaza, gukora cyane, kugumana ubushuhe no kwihanganira umunyu.
2. Viscosity (mPa.s) 2%, 30000, 60000, 100000 igisubizo cyamazi kuri 20 ° C Bitatu, ibyiza bya hydroxyethyl selulose Kwiyongera cyane Ingaruka
Hydroxyethyl selulose itanga ibikoresho byiza byo gutwikira latx, cyane cyane PVA. Nta flocculation ibaho mugihe irangi ryubatswe cyane.
Hydroxyethyl selulose ifite ingaruka zo kubyimba cyane. Irashobora kugabanya ibipimo, kuzamura ubukungu bwa formula, no kunoza scrub irwanya igifuniko.
Imiterere myiza ya rheologiya
Solution Amazi yo mumazi ya hydroxyethyl selulose ni sisitemu itari Newtonian, kandi umutungo wibisubizo byayo witwa thixotropy.
● Muburyo buhagaze, ibicuruzwa bimaze guseswa burundu, sisitemu yo gutwikira ikomeza kubyimba neza no gufungura.
● Mugihe cyo gusuka, sisitemu igumana ubukonje buciriritse, kugirango ibicuruzwa bigire amazi meza kandi ntibishobora kumeneka.
● Iyo ushyizwemo na brush na roller, ibicuruzwa bikwirakwira byoroshye kuri substrate. Nibyoroshye kubaka. Mugihe kimwe, ifite guhangana neza.
● Hanyuma, nyuma yo gutwikira birangiye, ubwiza bwa sisitemu burahita bukira, kandi igipfunsi gihita kigabanuka.
Gutandukana no gukemura
Od Hydroxyethyl selulose ivurwa hamwe no gutinda gutinda, bishobora gukumira neza agglomeration mugihe hongewemo ifu yumye. Nyuma yo kwemeza ko ifu ya HEC yatatanye neza, tangira hydration.
Hydroxyethyl selulose hamwe nubuvuzi bukwiye burashobora guhindura neza igipimo cyo gushonga hamwe nubwiyongere bwibicuruzwa.
ububiko buhamye
Od Hydroxyethyl selulose ifite ibyiza birwanya anti-mildew kandi itanga igihe gihagije cyo kubika amarangi. Kurinda neza pigment nuwuzuza gutura. 4. Uburyo bwo gukoresha: (1) Ongeraho mugihe cyumusaruro Ubu buryo nuburyo bworoshye kandi bufata igihe gito. Intambwe nizi zikurikira: 1. Ongeramo amazi meza mu ndobo nini ifite ibikoresho byo hejuru byogosha. 2. Tangira kubyutsa ubudahwema kumuvuduko muke hanyuma ushungure buhoro hydroxyethyl selulose mubisubizo neza. 3. Komeza kubyutsa kugeza ibice byose byashizwemo. 4. Noneho ongeramo imiti igabanya ubukana ninyongera zitandukanye. Nka pigment, imfashanyo ikwirakwiza, amazi ya amoniya, nibindi 5. Kangura kugeza hydroxyethyl selulose yose imaze gushonga burundu (viscosity yumuti wiyongera cyane) mbere yo kongeramo ibindi bice muburyo bwo kubyitwaramo. . Ibyiza byubu buryo nuko bifite ihinduka ryinshi kandi birashobora kwongerwaho kubicuruzwa byarangiye, ariko bigomba kubikwa neza. Intambwe zisa nintambwe (1-4) muburyo (1): itandukaniro nuko ntamashanyarazi ukenewe cyane, gusa bamwe mubakangurambaga bafite imbaraga zihagije zo gutuma hydroxyethyl selulose ikwirakwizwa kimwe mubisubizo, komeza kubyutsa kugeza bishonge burundu mu gisubizo kiboneye. Twabibutsa ko imiti igabanya ubukana igomba kongerwamo inzoga za nyina vuba bishoboka. V. Gushyira mu bikorwa 1. Byakoreshejwe mumazi ashingiye kumazi ya latx: HEC, nka colloid ikingira, irashobora gukoreshwa muri vinyl acetate emulsion polymerisation kugirango iteze imbere sisitemu ya polymerisation muburyo butandukanye bwagaciro ka pH. Mu gukora ibicuruzwa byarangiye, inyongeramusaruro nka pigment hamwe nuzuza zikoreshwa mugukwirakwiza kimwe, gutuza no gutanga ingaruka zibyibushye. Irashobora kandi gukoreshwa nkikwirakwiza kuri polymer zihagarikwa nka styrene, acrylate, na propylene. Gukoresha irangi rya latex birashobora kunoza cyane kubyimbye no kuringaniza imikorere. 2. Kubijyanye no gucukura peteroli: HEC ikoreshwa nkibyimbye mubyondo bitandukanye bisabwa mu gucukura, gutunganya neza, gutunganya neza no kuvunika, kugirango icyondo kibone amazi meza kandi gihamye. Kunoza ubushobozi bwo gutwara ibyondo mugihe cyo gucukura, kandi wirinde amazi menshi kwinjira murwego rwamavuta avuye mucyondo, bigahindura ubushobozi bwumusaruro wamavuta. 3. Ikoreshwa mu kubaka no kubaka ibikoresho: Kubera ubushobozi bukomeye bwo gufata amazi, HEC ni umubyimba mwiza kandi uhuza sima ya sima na minisiteri. Irashobora kuvangwa muri minisiteri kugirango iteze imbere kandi ikore neza, kandi yongere igihe cyo guhumeka amazi, Kongera imbaraga zambere za beto kandi wirinde gucika. Irashobora kunoza cyane kubika amazi no guhuza imbaraga mugihe ikoreshwa muguhomesha plaster, guhuza plaster, hamwe na plaster. 4. Ikoreshwa mu menyo yinyo: kubera kurwanya imbaraga zumunyu na aside, HEC irashobora kwemeza iryinyo ryinyo. Byongeye kandi, umuti wamenyo ntabwo byoroshye gukama kubera gufata amazi akomeye hamwe nubushobozi bwa emulisitiya. 5. Iyo ikoreshejwe muri wino ishingiye kumazi, HEC irashobora gutuma wino yumishwa vuba kandi idashoboka. Byongeye kandi, HEC ikoreshwa cyane mugucapa imyenda no gusiga irangi, gukora impapuro, imiti ya buri munsi nibindi. 6. Kwirinda gukoresha HEC: a. Hygroscopicity: Ubwoko bwose bwa hydroxyethyl selulose HEC ni hygroscopique. Ubusanzwe amazi ari munsi ya 5% mugihe avuye muruganda, ariko kubera ubwikorezi butandukanye hamwe nububiko butandukanye, amazi azaba menshi kuruta iyo avuye muruganda. Mugihe uyikoresha, bapima gusa amazi hanyuma ugabanye uburemere bwamazi mugihe ubara. Ntugashyire ahagaragara ikirere. b. Ifu yumukungugu iraturika: niba ifu kama nifu ya hydroxyethyl selulose ivumbi iri mukirere ku kigero runaka, bizanaturika iyo bahuye n’umuriro. Igikorwa gikwiye gukorwa kugirango wirinde ifu yumukungugu mwikirere bishoboka. . Bika ahantu hafite umwuka kandi wumye mu nzu mugihe ubitse, kandi witondere ubushuhe. Witondere imvura nizuba mugihe cyo gutwara. Hydroxypropyl methyl selulose, yitwa (HPMC): hydroxypropyl methyl selulose (HPMC) ni ifu yera itagira impumuro nziza, itaryoshye, idafite uburozi, hariho ubwoko bubiri bwihuse kandi butahita, ako kanya, Iyo buhuye namazi akonje, bwihuse ikwirakwira ikabura mu mazi. Muri iki gihe, amazi ntagira ubwiza. Nyuma yiminota igera kuri 2, ubwiza bwamazi bwiyongera, bugakora colloid ibonerana. Ubwoko butari ako kanya: Irashobora gukoreshwa gusa mubicuruzwa byifu byumye nka puderi ya pome na sima ya sima. Ntishobora gukoreshwa mumazi ya kole no gusiga irangi, kandi hazabaho guhuzagurika.
Igihe cyo kohereza: Ukuboza-26-2022