Ko mheremalose ether ether ane pa coment-based zvigadzirwa?

1. Kupisa kwe hydration

Maererano neiyo yekuburitswa yekupisa kwehydration nekufamba kwenguva, iyo nzira yekunyora inowanzo kupatsanurwa kuita matanho mashanu, ~ ~

Mhedzisiro yeyedzo inoratidza kuti mune yekutanga nhanho yekunyengerera (kureva kuti nguva yekutanga hydration), kana huwandu hwe hydration nguva yeiyo 0,1 Kana huwandu hweHemcInowedzera kusvika painenge iri pamusoro 0.3%, yekutanga Exothermic Peak yeiyo slurry inononoka, uye kukosha kwepamusoro kunoderera zvishoma nezvishoma nekuwedzera kweHemc. Hemc ichanonoka induction nguva uye nguva yekuwedzera yeiyo simende slurry, uye yakakura zvirimo, iyo nguva yekushambadzira, iyo yakanyanya kudzokera kumashure nguva, uye diki iyo Exothermic Peak; Shanduko yeCellulose ether yezvinyorwa haina kujeka kwenguva yekunyepedzera uye iyo yekushomeka kweiyo Cellulose. 3 (b).

Fig.

2. MEchanical Properties:

Nekufunda marudzi maviri emasangano ana ana ana maViscoulose e60000PA Simba rinorema reiyo yakagadziridzwa motsi yakasanganiswa ne 100000pa viscosity hydroxpropyl methyl methyl cellyl cellyl cellows Zvinoratidza kuti kubatanidzwa kwe methyl cellelose ether kuchanyanya kuderedza simba rekumanikidza rekumanikidza. Iyo yakawanda mari, idiki simba richava; Iyo diki iyo viscosity, iyo yakanyanya kunaka pakurasikirwa kwemutyairi wekumanikidza; Hydroxypropyl methyl cellel cellulose ether kana doosi iri pasi pe 0,1%, simba rekumanikidza rejaya rinogona kuwedzerwa nenzira kwayo. Kana dosage ichidarika 0,1%, simba rekumanikidza reiyo dhiri rinoderera nekuwedzera kweiyo dosage, saka dosage inofanira kudzorwa pa1,1%.

Fig.

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3. Cnguva yakawanda:

Nekuyera nguva yekurongedza yehydroxyprusyl methylcellose ether neiyo visikopo ye100000PA STONS YEMAHARA, yakawanikwa kuti nguva yekutanga yeHPMC, iyo nguva yekutanga uye yekupedzisira nguva yekamendi yakawedzerwa. Kana iko kusungwa kuri 1%, nguva yekutanga yekusvika shure kwemaminitsi makumi mashanu, uye nguva yekupedzisira inosvika pamaminitsi mazana masere nemakumi mashanu. Kuenzaniswa neiyo sampuli isina chinhu, nguva yekutanga inowedzerwa nemaminitsi makumi maviri nemasere, uye yekupedzisira nguva yekugara inotambanudzwa nemaminitsi mana (sezvakaratidzwa mumufananidzo 5). Kunyangwe iri hpmc ine viscosity ye 50000pa s, 100000pa s, 100000pa s, 200000pa s, 200000pa s, inogona kufananidza nekumisikidzwa kwemutatu, nguva yekutanga nguva uye yekupedzisira nguva yekuwedzera kwekuwedzera, sezvakaratidzwa mumufananidzo 6 zvakaratidzwa. Izvi zvinodaro nekuti cellulose ether inodhindwa pamusoro pechisimba chechikamu, chinodzivirira mvura kubva pakubata nekisimusi zvikamu, zvobva zvanonoka hydration ye siment. Iyo yakakura iyo viscosity ye cellulose ether, iyo yakakwenenzverwa iyo adsorption layer pamusoro peiyo simenti zvikamu, uye zvakanyanya kukosha kudzoreredzwa.

Fig.5 Mhedzisiro ye cellulose etth iltement pane kugara nguva yemota

Fig.6 Mhedzisiro yeVakasiyana visikopa yeHPMC pane iyo nguva yekuisa yeiyo coment paste

(MC-5 (50000pa ·), MC-10 (100000pa)) uye MC-20 (200000pa s)

Methyl Cellulose ether uye hydroxyprupyl methyl Cellel dambudziko rekupaza.

4 Kuchengeta mvura:

Mhedzisiro ye cellulose ether zvirimo mukuchengetwa kwemvura zvakadzidzwa. Zvinowanikwa kuti kuwedzera kwezvinyorwa zvemasero e cellulose erthese, iyo mwero wemvura inowedzera, uye kana zvirimo zveCellulose ether zvakakura kupfuura Nekudaro, paunenge uchienzanisa mhando nhatu dzemasero (HPMC ine viscosity ye50000pa s (mc-5), 100000pa s (mc-20)), pesvedzero ye viscosity pakuchengetwa kwemvura zvakasiyana. Ukama pakati pemvura yekuchengetwa kwemvura ndeiyi: MC-5.