Hydroxypropyl methyl cellulose mu simenti ndi pulasitala yochokera ku gypsum

HPMC Hydroxypropyl methyl celluloseMu matope a simenti ndi gypsum slurry, makamaka amatenga gawo losunga madzi ndi kukhuthala, amatha bwino kulimbitsa kukana kwa slurry ndi kukana kutsika.

Kutentha kwa mpweya, kutentha ndi kuthamanga kwa mphepo zimatha kukhudza kuchuluka kwa madzi omwe amatuluka mu simenti ndi zinthu zopangidwa ndi gypsum. Chifukwa chake, m'nyengo zosiyanasiyana, kuwonjezera hydroxypropyl methyl cellulose kuchuluka komweko kwa madzi omwe amasungidwa kumakhala ndi kusiyana. Pakupanga konkriti, mphamvu yosungira madzi ya slurry ikhoza kusinthidwa powonjezera kapena kuchepetsa kuchuluka kwa HPMC. Kusunga madzi kwa methyl cellulose ether pa kutentha kwakukulu ndi chizindikiro chofunikira chosiyanitsa mtundu wa methyl cellulose ether.

Zabwino kwambirihydroxypropyl methyl celluloseZinthu zotsatizana zimatha kuthetsa vuto la kusunga madzi pansi pa kutentha kwambiri. Mu nyengo yotentha kwambiri, makamaka m'malo otentha ndi ouma komanso kapangidwe kowonda kumbali ya dzuwa, kufunikira kwa HPMC yapamwamba kwambiri kuti iwonjezere kusunga madzi; hydroxypropyl methyl cellulose (HPMC), kufanana kwake ndi kwabwino kwambiri, ndi gulu la hydroxypropyl la okosijeni ndi okosijeni lomwe limagawidwa mofanana mu unyolo wa cellulose, limatha kusintha mpweya wa hydroxyl ndi ether ndi madzi pa kiyi yolumikizira mphamvu ya hydrogen, kupanga madzi opanda madzi, kuti azitha kuwongolera bwino nyengo yotentha yomwe imayamba chifukwa cha chinyezi, kukwaniritsa kusunga madzi ambiri.

Ubwino waukulu wa hydroxypropyl methyl cellulose ukhoza kufalikira mofanana komanso moyenera mu simenti ndi zinthu za pulasitala, ndikuyika tinthu tonse tolimba, ndikupanga filimu yonyowetsa, chinyezi chomwe chili pansi pake chimatulutsidwa pang'onopang'ono, komanso zinthu zopanda organic zomwe zimathandizira kuti zinthuzo zikhale zolimba komanso zolimba.

Pa ntchito yomanga, kuti tikwaniritse zotsatira za kusunga madzi, tifunika kuwonjezera khalidwe lapamwamba.HPMCzinthu mogwirizana ndi njira yogwiritsira ntchito, apo ayi, padzakhala kuumitsa mofulumira kwambiri chifukwa cha kusakwanira kwa madzi, kuchepetsa mphamvu, ming'alu, mavuto a ng'oma yopanda kanthu komanso kutayika kwa zinthu, komanso kumawonjezera zovuta za ntchito yomanga. Pamene kutentha kukuchepa, kuchuluka kwa madzi a HPMC kungachepe pang'onopang'ono, ndipo zotsatira zomwezo zosungira madzi zitha kupezeka.