Katundu wa Hydroxypropyl Methyl Cellulose Ether mu Mortar

Monga chimodzi mwa zinthu zofunika kwambiri zosakaniza za cellulose ether mu matope ouma, hydroxypropyl methylcellulose imagwira ntchito zambiri mu matope. Ntchito yofunika kwambiri ya hydroxypropyl methylcellulose mu matope a simenti ndi kusunga madzi ndi kukhuthala. Kuphatikiza apo, chifukwa cha kuyanjana kwake ndi dongosolo la simenti, ingathandizenso popereka mpweya, kuchedwetsa kukhazikitsa, komanso kukonza mphamvu ya ma tensile bond.

Ntchito yofunika kwambiri ya hydroxypropyl methylcellulose mu matope ndi kusunga madzi. Monga kusakaniza kwa cellulose ether mu matope, hydroxypropyl methylcellulose ingagwiritsidwe ntchito pafupifupi muzinthu zonse za matope, makamaka chifukwa cha kusunga madzi kwake. Kawirikawiri, kusunga madzi kwa hydroxypropyl methylcellulose kumakhudzana ndi kukhuthala kwake, kuchuluka kwa kusintha kwake, ndi kukula kwa tinthu.

Hydroxypropyl methylcellulose imagwiritsidwa ntchito ngati chokhuthala, ndipo mphamvu yake yokhuthala imakhudzana ndi kuchuluka kwa kusintha, kukula kwa tinthu tating'onoting'ono, kukhuthala ndi kuchuluka kwa kusintha kwa hydroxypropyl methylcellulose. Kawirikawiri, kuchuluka kwa kusintha ndi kukhuthala kwa ether ya cellulose kukakhala kwakukulu, ndipo tinthu tating'onoting'ono tikakhala tating'ono, mphamvu yake yokhuthala imaonekera kwambiri.

Mu hydroxypropyl methylcellulose, kuyambitsidwa kwa magulu a methoxy kumachepetsa mphamvu ya pamwamba pa yankho lamadzi lomwe lili ndi hydroxypropyl methylcellulose, kotero kuti hydroxypropyl methylcellulose imakhala ndi mphamvu yolowetsa mpweya pa matope a simenti. Ikani thovu loyenera la mpweya mu matope, chifukwa cha "mphamvu ya mpira" ya thovu la mpweya,

Kapangidwe ka matope a matope kamakula, ndipo nthawi yomweyo, kuyambika kwa thovu la mpweya kumawonjezera kuchuluka kwa kutulutsa kwa matope. Zachidziwikire, kuchuluka kwa mpweya wolowa m'madzi kuyenera kulamulidwa. Kuchuluka kwa mpweya wolowa m'madzi kungayambitse vuto lalikulu pa mphamvu ya matope.

Hydroxypropyl methylcellulose imachedwetsa njira yokhazikitsira simenti, motero imachepetsa nthawi yokhazikitsira ndi kulimbitsa simenti, ndikuwonjezera nthawi yotsegulira simenti moyenerera, koma izi sizothandiza pa simenti m'madera ozizira.

Monga chinthu cha polima chaunyolo wautali, hydroxypropyl methylcellulose imatha kukonza magwiridwe antchito ogwirizana ndi substrate pambuyo poti yawonjezedwa ku simenti pansi pa maziko osungira chinyezi mu slurry.

Mwachidule, magwiridwe antchito aHPMCMu matope makamaka mumaphatikizapo: kusunga madzi, kukhuthala, kutalikitsa nthawi yoyika, kulowetsa mpweya ndikuwongolera mphamvu ya ma tensile bond, ndi zina zotero.