Zotsatira za Hydroxypropyl Methyl Cellulose HPMC pa Kukhazikitsa Nthawi ya Konkire

Kuyika nthawi ya konkire kumakhudzana makamaka ndi nthawi yoyika simenti, ndipo chikoka cha aggregate si chachikulu. Chifukwa chake, zotsatira za hydroxypropyl methylcellulose HPMC pakuyika nthawi ya konkire yosabalalika pansi pamadzi imatha kuphunziridwa kudzera mu nthawi yoyika matope. Popeza nthawi yoyika matope imakhudzidwa ndi madzi, pofuna kuyesa zotsatira za HPMC pa nthawi yoyika matope, chiŵerengero cha simenti ya madzi ndi chiŵerengero cha matope cha matope chiyenera kukhazikitsidwa.

Zotsatira zoyesera zikuwonetsa kuti kuwonjezeredwa kwa hydroxypropyl methylcellulose HPMC kumakhala ndi vuto lalikulu pakusakaniza kwamatope, ndipo nthawi yoyika matope imatalika ndi kuwonjezeka kwa kuchuluka kwa hydroxypropyl methylcellulose. Pankhani yofanana ya HPMC, matope opangidwa pansi pa madzi ndi abwino kuposa matope opangidwa mumlengalenga. Kuumba kwapakatikati kumatenga nthawi yayitali kuti kukhazikike. Poyesedwa m'madzi, poyerekeza ndi chitsanzo chopanda kanthu, nthawi yoyamba yoyika matope osakanizidwa ndi hydroxypropyl methylcellulose inachedwa ndi maola 6-18, ndipo nthawi yomaliza yokonzekera inachedwa ndi maola 6-22. Chifukwa chake, HPMC iyenera kugwiritsidwa ntchito limodzi ndi othandizira mphamvu zoyambirira.

HPMC ndi mkulu maselo polima ndi macromolecular liniya dongosolo. Gulu lake logwira ntchito lili ndi magulu a hydroxyl, omwe amatha kupanga zomangira za haidrojeni ndi mamolekyu amadzi osakanikirana ndikuwonjezera kukhuthala kwamadzi osakanikirana. The unyolo yaitali maselo a HPMC adzakopa wina ndi mzake, kupanga mamolekyu HPMC zopiringizika kupanga dongosolo maukonde, kukulunga simenti ndi kusakaniza madzi. Popeza HPMC imapanga mawonekedwe a netiweki ngati filimu kuti amangire simenti, imatha kuteteza kusungunuka kwamadzi mumtondo, ndikulepheretsa kapena kuchepetsa kuchuluka kwa simenti.