Kunoza ingaruka za hydroxypropyl methylcellulose (HPMC) kubikoresho bishingiye kuri sima

Mu myaka yashize, hamwe niterambere ryiterambere ryiterambere rya tekinoroji yo hanze, iterambere ryikomeza ryikoranabuhanga rya selile, hamwe nibyiza biranga HPMC ubwayo, HPMC yakoreshejwe cyane mubikorwa byubwubatsi.

Mu rwego rwo kurushaho gucukumbura uburyo bwibikorwa hagati ya hydroxypropyl methylcellulose (HPMC) n’ibikoresho bishingiye kuri sima, iyi nyandiko yibanze ku ngaruka nziza za Jinshuiqiao hydroxypropyl methylcellulose (HPMC) ku miterere ihuriweho n’ibikoresho bishingiye kuri sima.

igihe cyo kwambara

Igihe cyo gushiraho beto gifitanye isano cyane cyane nigihe cyo gushiraho sima, kandi igiteranyo ntigifite uruhare runini, bityo igihe cyo gushiraho minisiteri gishobora gukoreshwa aho kwiga ingaruka za HPMC mugihe cyagenwe cyamazi yo munsi y’amazi adatatanye, kuberako igihe cyo gushiraho minisiteri kigira ingaruka kumazi Kubwibyo, kugirango dusuzume ingaruka za HPMC mugihe cyagenwe cya minisiteri, birakenewe gukosora igipimo cyamazi-sima nigipimo cya minisiteri.

Nk’uko ubushakashatsi bwabigaragaje, iyongerwaho rya HPMC rifite ingaruka zikomeye zo kudindiza imvange ya minisiteri, kandi igihe cyo gushyiraho minisiteri kiraramba hamwe no kwiyongera kwa HPMC. Mubintu bimwe bya HPMC, minisiteri yubatswe mumazi yihuta kuruta minisiteri ikorwa mukirere. Igenamiterere ryigihe cyo kugereranya ni kirekire. Iyo upimye mumazi, ugereranije nicyitegererezo cyambaye ubusa, igihe cyo gushiraho minisiteri ivanze na HPMC gitinda kumasaha 6-18 yo gutangira kwambere namasaha 6-22 yo gushiraho bwa nyuma. Kubwibyo, HPMC igomba gukoreshwa ifatanije nihuta.

HPMC ni polymer nyinshi cyane ifite imiterere yumurongo wa macromolecular hamwe nitsinda rya hydroxyl kumurwi ukora, rishobora gukora imigozi ya hydrogène hamwe na molekile zivanze no kongera ubwiza bwamazi avanze. Iminyururu miremire ya HPMC izakurura, itume molekile ya HPMC ifatana hamwe kugirango ibe imiterere y'urusobekerane, gupfunyika sima no kuvanga amazi. Kubera ko HPMC ikora imiterere y'urusobekerane rusa na firime kandi igapfunyika sima, bizarinda neza ihindagurika ry’amazi muri minisiteri, kandi bibangamire cyangwa bidindiza umuvuduko w’amazi wa sima.

Amaraso

Ikintu cyo kuva amaraso ya minisiteri isa nkiya beto, bizatera gutuza gukomeye, bikavamo kwiyongera k'umubare w'amazi-sima w'igice cyo hejuru cya slurry, bigatuma igabanuka rya plastike nini yo hejuru ya slurry hakiri kare icyiciro, ndetse no guturika, n'imbaraga z'ubuso bwa layer ya slurry Ugereranije ufite intege nke.

Iyo igipimo kiri hejuru ya 0.5%, mubyukuri nta kintu cyo kuva amaraso. Ibi ni ukubera ko iyo HPMC ivanze muri minisiteri, HPMC ifite firime ikora imiterere nuburyo bwurusobe, kandi adsorption yitsinda rya hydroxyl kumurongo muremure wa macromolecules ituma sima no kuvanga amazi mumabuye bigira flokculasiyo, bigatuma imiterere ihamye. ya minisiteri. Nyuma yo kongeramo HPMC kuri minisiteri, ibyuka byinshi byigenga bito bizashyirwaho. Ibibyuka byo mu kirere bizagabanywa neza muri minisiteri kandi bibangamire gushira hamwe. Imikorere ya tekiniki ya HPMC igira uruhare runini kubikoresho bishingiye kuri sima, kandi ikoreshwa kenshi mugutegura ibikoresho bishya bishingiye kuri sima nkibikoresho byumye byumye na polymer mortar, kuburyo bifite amazi meza no kubika plastike.

Amazi ya Mortar

Iyo ingano ya HPMC ari nto, igira uruhare runini kubisabwa n'amazi ya minisiteri. Kubijyanye no gukomeza kwaguka kurwego rwa minisiteri nshyashya ahanini ni kimwe, ibirimo HPMC hamwe n’amazi y’amazi ya minisiteri ihinduka mumibanire yumurongo mugihe runaka, kandi amazi ya minisiteri yabanje kugabanuka hanyuma ariyongera. biragaragara. Iyo umubare wa HPMC uri munsi ya 0.025%, hamwe no kwiyongera kwinshi, amazi ya minisiteri agabanuka kurwego rumwe rwo kwaguka, ibyo bikaba byerekana ko iyo umubare wa HPMC ari muto, bigira ingaruka zo kugabanya amazi kuri minisiteri, na HPMC ifite ingaruka zo guhumeka ikirere. Hano hari umubare munini wimyuka mito yigenga yigenga muri minisiteri, kandi ibyo byuka byo mu kirere bikora nk'amavuta yo kunoza amazi ya minisiteri. Iyo dosiye irenze 0.025%, amazi ya minisiteri yiyongera hamwe no kwiyongera kwa dosiye. Ni ukubera ko imiyoboro y'urusobe rwa HPMC iruzuye, kandi ikinyuranyo hagati ya floc kumurongo muremure wa molekile kigufi, kikaba gifite ingaruka zo gukurura no guhuriza hamwe, kandi bikagabanya umuvuduko wa minisiteri. Kubwibyo, hashingiwe ko urwego rwo kwaguka rusa cyane, ubunebwe bwerekana ubwiyongere bwamazi akenewe.

01. Ikizamini cyo kurwanya ikwirakwizwa:

Kurwanya-gutatanya nigipimo cyingenzi cya tekiniki yo gupima ubuziranenge bwibikorwa byo kurwanya. HPMC ni amazi ya elegitoronike ya polymer, azwi kandi nka resin-soluble resin cyangwa polymer-soluble polymer. Yongera ubudahangarwa bwuruvange mukongera ubwiza bwamazi avanze. Nibikoresho bya hydrophilique polymer bishobora gushonga mumazi kugirango bibe igisubizo. cyangwa gutatanya.

Ubushakashatsi bwerekana ko iyo ubwinshi bwa naphthalene bushingiye ku buhanga buhanitse bwa superplasticizer bwiyongereye, hiyongereyeho superplasticizer bizagabanya kurwanya ikwirakwizwa rya sima ivanze. Ni ukubera ko naphthalene ishingiye ku kugabanya amazi meza cyane igabanya amazi. Iyo kugabanya amazi byongewe kuri minisiteri, kugabanya amazi bizaba byerekejwe hejuru yubutaka bwa sima kugirango ubuso bwa sima bugire umushahara umwe. Uku kwanga amashanyarazi gutuma uduce twa sima dukora Imiterere ya flocculation ya sima irasenywa, hanyuma amazi apfunyitse muri iyo miterere ararekurwa, bizatera igihombo cya sima. Muri icyo gihe, usanga hamwe no kwiyongera kwa HPMC, kurwanya ikwirakwizwa rya sima ya sima nshya bigenda byiyongera kandi byiza.

02. Imbaraga ziranga ibintu bifatika:

Mu mushinga wicyitegererezo, HPMC mumazi yo mumazi adashobora gukwirakwizwa hifashishijwe beto, kandi igipimo cyimbaraga cyari C25. Ukurikije ikizamini cyibanze, ingano ya sima ni 400 kg, umwotsi wa silika wuzuye ni 25kg / m3, urugero rwiza rwa HPMC ni 0,6% byamafaranga ya sima, igipimo cyamazi-sima ni 0.42, umusenyi ni 40%, kandi umusaruro wa naphthalene ushingiye ku kugabanya amazi meza ni urugero rwa sima ni 8%, impuzandengo ya 28d yingero za beto mu kirere ni 42.6MPa, imbaraga za 28d zingana na beto yo mumazi ifite uburebure bwa 60mm mumazi ni 36.4MPa, naho igipimo cyingufu za beto yakozwe namazi na beto ikozwe mwuka ni 84.8%, ingaruka ni nyinshi.

33. Ubushakashatsi bwerekana:

(1) Kwiyongera kwa HPMC bifite ingaruka zigaragara zo kudindiza imvange ya minisiteri. Hamwe no kwiyongera kwa HPMC, igihe cyo gushiraho minisiteri cyongerewe uko bikurikirana. Mubintu bimwe bya HPMC, minisiteri ikozwe mumazi irihuta kuruta iyakozwe mwikirere. Igenamiterere ryigihe cyo kugereranya ni kirekire. Iyi mikorere ni ingirakamaro mu kuvoma beto yo mumazi.

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(3) Ingano ya HPMC hamwe n’amazi ya minisiteri yagabanutse mbere hanyuma yiyongera ku buryo bugaragara.

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. Icyitegererezo cyakozwe munsi yamazi muminsi 28 ni gito. Impamvu nyamukuru nuko iyongerwaho rya HPMC rigabanya cyane gutakaza no gutatanya sima mugihe usutse mumazi, ariko mugihe kimwe bigabanya ubukana bwa sima. Mu mushinga, hashingiwe ku kwemeza ingaruka zo kudatatanya munsi y’amazi, dosiye ya HPMC igomba kugabanuka bishoboka.

. Umushinga w'icyitegererezo urerekana ko igipimo cy'imbaraga za beto zakozwe n'amazi na beto ikozwe mu kirere ari 84.8%, kandi ingaruka ni nini cyane.