Zinthu Zingapo Zomwe Zimakhudza Kukhuthala kwa Hydroxypropyl Methyl Cellulose

Mukawonjezera hydroxypropyl methylcellulose ku zinthu zopangidwa ndi simenti, imatha kukhuthala. Kuchuluka kwa hydroxypropyl methylcellulose kumatsimikizira kufunikira kwa madzi kwa zinthu zopangidwa ndi simenti, kotero zimakhudza kutulutsa kwa matope.

Zinthu zingapo zimakhudza kukhuthala kwa hydroxypropyl methylcellulose:

1. Kuchuluka kwa polymerization ya cellulose ether, kulemera kwake kwa mamolekyulu kumakulirakulira, ndipo kukhuthala kwa yankho lamadzi kumakulirakulira;

2. Pamene etha ya cellulose ilowa kwambiri (kapena kuchuluka kwake), kukhuthala kwa madzi ake kumawonjezeka. Komabe, ndikofunikira kusamala posankha njira yoyenera yogwiritsira ntchito kuti mupewe kumwa mopitirira muyeso, zomwe zingakhudze ntchito ya matope ndi konkire.

3. Monga zakumwa zambiri, kukhuthala kwa yankho la ether ya cellulose kumachepa ndi kuwonjezeka kwa kutentha, ndipo kuchuluka kwa ether ya cellulose kukakhala kwakukulu, kutentha kumakhudza kwambiri;

4. Mankhwala a Hydroxypropyl methylcellulose nthawi zambiri amakhala a pseudoplastic, omwe ali ndi mphamvu yochepetsera kudulidwa kwa shear. Kuchuluka kwa kudulidwa kwa shear panthawi yoyesedwa, kukhuthala kwa scarcity kumachepa.

Chifukwa chake, mgwirizano wa matope udzachepa chifukwa cha mphamvu yakunja, zomwe zimathandiza pakupanga matope osweka, zomwe zimapangitsa kuti matope azigwira ntchito bwino komanso azigwirizana nthawi imodzi.

Njira yothetsera hydroxypropyl methylcellulose idzawonetsa makhalidwe a madzi a Newtonian pamene kuchuluka kwake kuli kochepa kwambiri ndipo kukhuthala kwake kuli kochepa. Pamene kuchuluka kwake kukuwonjezeka, njirayo idzawonetsa pang'onopang'ono makhalidwe a madzi a pseudoplastic, ndipo kuchuluka kwake kukakwera, kumawonekera bwino kwambiri.