Ingaruka ya Cellulose Ether kubintu bya Mortar

Ingaruka zubwoko bubiri bwa selile ethers kumikorere ya minisiteri yarizwe. Ibisubizo byerekanaga ko ubwoko bwombi bwa selile ya selile bushobora kunoza cyane gufata amazi ya minisiteri no kugabanya ubudahangarwa bwa minisiteri; Imbaraga zo guhonyora zigabanuka mubyiciro bitandukanye, ariko igipimo cyo kugwiza hamwe nimbaraga zo guhuza za minisiteri ziyongera mubyiciro bitandukanye, bityo bitezimbere ubwubatsi bwa minisiteri.

Amagambo y'ingenzi:selile ether; umukozi ushinzwe kubika amazi; imbaraga zo guhuza

Cellulose ether (MC)ni inkomoko y'ibintu bisanzwe selile. Ether ya selile irashobora gukoreshwa nkigikoresho cyo gufata amazi, kubyimbye, guhuza, gutatanya, stabilisateur, guhagarika ibikorwa, emulisiferi no gufasha gukora firime, nibindi. ya minisiteri, so selulose ether niyo ikoreshwa cyane mumazi ashonga polymer muri minisiteri.

1. Ibikoresho byo kwipimisha nuburyo bwo kwipimisha

1.1 Ibikoresho bibisi

Isima: Isima isanzwe ya Portland yakozwe na Jiaozuo Jianjian Cement Co., Ltd., ifite imbaraga zingana na 42.5. Umusenyi: Nanyang umucanga wumuhondo, modulus nziza 2.75, umucanga wo hagati. Cellulose ether (MC): C9101 yakozwe na Beijing Luojian Company na HPMC yakozwe na Shanghai Huiguang Company.

1.2 Uburyo bwo kugerageza

Muri ubu bushakashatsi, igipimo cya lime-umucanga cyari 1: 2, naho amazi-sima yari 0.45; ether ya selulose yabanje kuvangwa na sima mbere, hanyuma umucanga wongewemo kandi ubyutsa neza. Igipimo cya selulose ether kibarwa ukurikije ijanisha rya sima.

Ikizamini cyo gukomeretsa imbaraga hamwe nikizamini gihoraho bikorwa hifashishijwe JGJ 70-90 “Uburyo bwo Kwipimisha kubintu Byibanze Byubaka Mortar”. Ikizamini cyingufu zikorwa gikozwe ukurikije GB / T 17671–1999 “Ikizamini cya Cement Mortar”.

Ikizamini cyo gufata amazi cyakozwe hakurikijwe uburyo bwo kuyungurura impapuro zikoreshwa mu nganda zikora beto zikoreshwa mu Bufaransa. Inzira yihariye niyi ikurikira: (1) shyira ibice 5 byimpapuro ziyungurura gahoro ku isahani izengurutswe, hanyuma upime uburemere bwayo; . (3) Suka minisiteri muri silinderi; . (5) Kubara ubwinshi bwamazi yakiriwe nimpapuro ziyungurura gahoro kuri metero kare, nicyo gipimo cyo kwinjiza amazi; (6) Igipimo cyo kwinjiza amazi nuburyo bwo kubara ibisubizo byibizamini byombi. Niba itandukaniro riri hagati yikigereranyo kirenze 10%, ikizamini kigomba gusubirwamo; (7) Kugumana amazi ya minisiteri bigaragazwa nigipimo cyo gufata amazi.

Ikizamini cyingufu zububiko cyakozwe hifashishijwe uburyo bwasabwe na societe yubuyapani ishinzwe ubumenyi bwibikoresho, kandi imbaraga zubusabane zaranzwe nimbaraga zidasanzwe. Ikizamini gifata prism sample ifite ubunini bwa 160mm×40mm×40mm. Icyitegererezo cya minisiteri isanzwe yakozwe mbere yakize kugeza kuri 28 d, hanyuma igabanywamo kabiri. Ibice bibiri by'icyitegererezo byakozwe mu byitegererezo hamwe na minisiteri isanzwe cyangwa minisiteri isanzwe, hanyuma bisanzwe bikira mu ngo kugeza ku myaka runaka, hanyuma bipimishwa hakurikijwe uburyo bwo gupima imbaraga zoroshye za sima.

2. Ibisubizo by'ibizamini n'isesengura

2.1 Guhoraho

Uhereye ku ngaruka za selulose ether ku guhuza kwa minisiteri, birashobora kugaragara ko hamwe niyongerekana ryibintu bya selile ya selile, ihame rya minisiteri ahanini ryerekana inzira yo kumanuka, kandi kugabanuka kwa minisiteri ivanze na HPMC birihuta kurenza iya minisiteri ivanze na C9101. Ni ukubera ko ubwiza bwa selulose ether bubuza urujya n'uruza rwa minisiteri, kandi ubwiza bwa HPMC buri hejuru ya C9101.

2.2 Kubika amazi

Muri minisiteri, ibikoresho bya sima nka sima na gypsumu bigomba kuyoborwa namazi kugirango bishyireho. Umubare wuzuye wa selulose ether urashobora kugumana ubuhehere muri minisiteri igihe kinini gihagije, kugirango igenamigambi no gukomera birashobora gukomeza.

Uhereye ku ngaruka za selile ya etherulose ku kugumana amazi ya minisiteri, urashobora kubona ko: (1) Hamwe no kwiyongera kwa C9101 cyangwa HPMC selulose ether, igipimo cyo kwinjiza amazi ya minisiteri cyaragabanutse cyane, ni ukuvuga kubika amazi mortar yatejwe imbere cyane, cyane iyo ivanze na Mortar ya HPMC. Kubika amazi birashobora kunozwa kurushaho; (2) Iyo umubare wa HPMC ari 0,05% kugeza 0.10%, minisiteri yujuje byuzuye ibisabwa byo gufata amazi mubikorwa byo kubaka.

Ether zombi za selile ni polimeri itari ionic. Amatsinda ya hydroxyl kumurongo wa selile ya selile na atome ya ogisijeni kumurongo wa ether irashobora gukora hydrogène hamwe na molekile zamazi, bigatuma amazi yubusa mumazi aboshye, bityo bikagira uruhare runini mukubungabunga amazi.

Kugumana amazi ya selile ya selile ahanini biterwa nubwiza bwayo, ingano yingingo, igipimo cyo gushonga hamwe nubwinshi bwiyongereye. Muri rusange, uko umubare wongeyeho, niko ubwiza bwiyongera, kandi nibyiza, niko amazi agumana. Byombi C9101 na HPMC selulose ether bifite methoxy na hydroxypropoxy mumatsinda ya molekile, ariko ibikubiye muri mikorobe muri HPMC selulose ether birenze ibya C9101, kandi ubwiza bwa HPMC burenze ubwa C9101, bityo kubika amazi ya minisiteri ivanze na HPMC irarenze iya minisiteri ivanze na HPMC C9101 minisiteri nini. Ariko, niba ubukonje hamwe nuburemere bwa molekuline ya selile ya selile iri hejuru cyane, imbaraga zayo zizagabanuka uko bikwiye, bizagira ingaruka mbi kumbaraga no mumikorere ya minisiteri. Imbaraga zubaka kugirango tugere ku ngaruka nziza zo guhuza.

2.3 Imbaraga zoroshye nimbaraga zo kwikuramo

Uhereye ku ngaruka za selulose ether ku mbaraga zihindagurika no kwikomeretsa za minisiteri, birashobora kugaragara ko hamwe no kwiyongera kwibintu bya selile ya selile, imbaraga zihindagurika no kwikomeretsa za minisiteri muminsi 7 na 28 byerekanaga ko byamanutse. Ibi biterwa cyane cyane nuko: (1) Iyo selile ya selile yongewe kuri minisiteri, polymers zihindagurika mumyenge ya minisiteri ziyongera, kandi izo polimeri zoroshye ntizishobora gutanga ubufasha bukomeye mugihe matrike yibumbiye hamwe. Nkigisubizo, imbaraga za flexural na compressive imbaraga za minisiteri ziragabanuka; . ; . minisiteri.

Ikigereranyo cyikubye

Ihinduka rya minisiteri iha minisiteri ubumuga bwiza, bukayifasha guhuza nihungabana riterwa no kugabanuka no guhindura imiterere ya substrate, bityo bikazamura cyane imbaraga zubusabane nigihe kirekire cya minisiteri.

Duhereye ku ngaruka ziterwa na selile ya ether ku kigero cyo kugwiza minisiteri (ff / fo), urashobora kubona ko hamwe no kwiyongera kwa selile ether C9101 hamwe na HPMC, igipimo cyo kuzimya minisiteri ahanini cyerekanaga icyerekezo cyiyongera, byerekana ko ubworoherane bwa minisiteri bwari byateye imbere.

Iyo ether ya selulose ishonga muri minisiteri, kubera ko methoxyl na hydroxypropoxyl kumurongo wa molekile bizitwara hamwe na Ca2 + na Al3 + mubitotsi, hakozwe geli ya viscous ikuzuzwa icyuho cya sima, bityo ikagira uruhare mukuzuza byoroshye no gushimangira imbaraga, kunoza ubwinshi bwa minisiteri, kandi byerekana ko ihinduka ryimiterere ya minisiteri yahinduwe itezimbere macroscopically.

2.5 Imbaraga zinguzanyo

Uhereye ku ngaruka za selulose ether yibintu byimbaraga za minisiteri, birashobora kugaragara ko imbaraga za minisiteri ziyongera hamwe no kwiyongera kwa selile.

Kwiyongera kwa selile ya selile irashobora gukora urwego ruto rwa firime idafite amazi ya polymer hagati ya selile ya selile na hydrata ya sima. Iyi firime ifite kashe kandi itezimbere "hejuru yumye" ya minisiteri. Bitewe no gufata neza amazi ya selile ya selile, amazi ahagije abikwa imbere muri minisiteri, bityo bigatuma hydrata ikomera ya sima hamwe niterambere ryuzuye ryimbaraga zayo, kandi bikazamura imbaraga zububiko bwa paste ya sima. Byongeye kandi, kongeramo ether ya selile itezimbere ubumwe bwa minisiteri, kandi bigatuma minisiteri ifite plastike nziza kandi ihindagurika, ibyo bigatuma na minisiteri ibasha guhuza neza no kugabanuka kwimiterere ya substrate, bityo bikazamura imbaraga zubucuti bwa minisiteri. .

2.6 Kugabanuka

Irashobora kugaragara uhereye ku ngaruka ziterwa na selile ya ether ku kugabanuka kwa minisiteri: (1) Kugabanuka kwagaciro ka selulose ether mortar iri hasi cyane ugereranije na minisiteri yubusa. . Ni ukubera ko umubare munini wa selile ya selile, niko ubwinshi bwayo, butera kwiyongera kwamazi. . Ni ukubera ko viscosity ya HPMC iruta iya C9101. Hejuru ya viscosity ya selile ether. Nibyiza kubika amazi, nibirimo umwuka mwinshi, mugihe ikirere kigeze kurwego runaka, kugabanuka kwagaciro ka minisiteri biziyongera. Kubwibyo, kubijyanye no kugabanuka agaciro, dosiye nziza ya C9101 ni 0.05% ~ 0,20%. Igipimo cyiza cya HPMC ni 0.05% ~ 0,10%.

3. Umwanzuro

1. Cellulose ether irashobora kunoza uburyo bwo gufata amazi ya minisiteri no kugabanya ubudahangarwa bwa minisiteri. Guhindura ingano ya selulose ether irashobora guhaza ibikenewe bya minisiteri ikoreshwa mumishinga itandukanye.

2. Kwiyongera kwa selulose ether bigabanya imbaraga zihindagurika nimbaraga zo gukomeretsa za minisiteri, ariko byongera igipimo cyikubitiro hamwe nimbaraga zihuza kurwego runaka, bityo bikazamura uburebure bwa minisiteri.

3. Kwiyongera kwa selulose ether birashobora kunoza imikorere yo kugabanuka kwa minisiteri, kandi hamwe niyongera ryibirimo, kugabanuka kwagaciro ka minisiteri biba bito kandi bito. Ariko iyo ingano ya selile ya selile igeze kurwego runaka, igabanuka ryagaciro rya minisiteri ryiyongera kurwego runaka bitewe nubwiyongere bwamafaranga yinjira mu kirere.