Njira yoyesera yosungira madzi a HPMC (hydroxypropyl methylcellulose)

dziwitsani

Hydroxypropyl methylcellulose (HPMC) ndi ether yosungunuka m'madzi yomwe imagwiritsidwa ntchito popanga zinthu zosiyanasiyana monga zomangamanga, chakudya, mankhwala ndi zodzoladzola chifukwa cha mawonekedwe ake apadera monga kusunga madzi, kukhuthala komanso kupanga mafilimu. Makhalidwe osungira madzi a HPMC ndi ofunikira kwambiri pomanga chifukwa amathandizira kukonza magwiridwe antchito, kuchepetsa kusweka ndi kupititsa patsogolo magwiridwe antchito a simenti. Chifukwa chake, kuyeza molondola kuchuluka kwa kusunga madzi kwa HPMC ndikofunikira kuti mutsimikizire mtundu wa chinthu chomaliza. M'nkhaniyi, tikambirana za njira yoyezera kusungirako madzi ya HPMC komanso kufunikira kwake pantchito yomanga.

Njira yoyesera yosungira madzi

Mphamvu yosungira madzi ya HPMC imayesedwa ndi kuchuluka kwa madzi omwe HPMC ingasunge mu nthawi yeniyeni. Pali njira zambiri zoyesera kusungirako madzi kwa HPMC, njira yomwe imagwiritsidwa ntchito kwambiri ndi njira ya centrifugation. Njirayi ili ndi njira zitatu zazikulu:

Gawo 1: Kukonzekera Zitsanzo

Gawo loyamba ndikukonzekera chitsanzo cha HPMC. Yesani kuchuluka kwa ufa wa HPMC pasadakhale ndikuwonjezera madzi enaake kuti mupange slurry. Chiŵerengero cha HPMC ndi madzi chimasiyana malinga ndi zofunikira za ntchito ndi kuyesa. Komabe, chiŵerengero wamba ndi 0.5% HPMC madzi ndi kulemera. Dothi lotayirira liyenera kugwedezeka kwa mphindi zingapo kuonetsetsa kuti HPMC imamwazikana m'madzi. Kenaka, lolani kuti slurry ikhale kwa maola 12 kuti muwonetsetse kuti ili ndi madzi okwanira.

Gawo 2: Centrifuge

Pambuyo pa maola 12, chotsani slurry ndikuyika kulemera kodziwika kwa slurry mu chubu cha centrifuge. Kenaka chubucho chimayikidwa mu centrifuge ndi kupota pa liwiro lapadera kwa nthawi yokhazikika. Liwiro ndi nthawi ya centrifugation zingasiyane malinga ndi njira anasankha. Nthawi zambiri, liwiro la centrifuge ndi 3000rpm ndipo nthawi yoyeserera ndi mphindi 30. Komabe, miyezo yosiyana ingafune kuthamanga ndi nthawi yosiyana.

Gawo 3: Kuwerengera mtengo wosunga madzi

Pambuyo pa centrifugation, chotsani chubu ndikulekanitsa madzi ku HPMC. Mtengo wosungira madzi ukhoza kuwerengedwa motere:

Mtengo wosungira madzi = [(HPMC + kulemera kwa madzi pamaso centrifugation) - (HPMC + kulemera kwa madzi pambuyo centrifugation)] / (HPMC + kulemera kwa madzi pamaso centrifugation) x 100

Mtengo wosungira madzi umasonyeza kuchuluka kwa madzi omwe amasungidwa ndi HPMC pambuyo pa centrifugation.

Kufunika koyesa kusunga madzi pomanga

Kuyesa kusunga madzi ndikofunikira kwambiri pantchito yomanga chifukwa kumathandizira kuwonetsetsa kuti chomaliza chimakhala chokhazikika komanso chimakwaniritsa zofunikira. HPMC imagwiritsidwa ntchito kwambiri muzinthu zopangira simenti monga matope, grout ndi konkriti kuti zithandizire kugwira ntchito kwawo, kuchepetsa kuchepa komanso kukulitsa kulimba kwawo. Makhalidwe osungira madzi a HPMC amatenga gawo lofunikira kuti akwaniritse izi.

Mtengo wosungira madzi wa HPMC umatsimikizira kuchuluka kwa madzi omwe angasungidwe muzinthu zopangira simenti, zomwe zimathandiza kuti zitheke. Zida za simenti zokhala ndi madzi osungiramo madzi ambiri ndizotheka ndipo ndizosavuta kusakaniza ndikugwiritsa ntchito. Kuonjezera apo, zipangizo zomwe zimakhala ndi madzi osungira madzi zimakhala ndi matumba ochepa a mpweya, zomwe zimachepetsa mwayi wosweka ndikuwonjezera kukhazikika kwazinthuzo.

Kuonjezera apo, mtengo wosungira madzi wa HPMC ndi chizindikiro cha khalidwe la HPMC lomwe limagwiritsidwa ntchito pazinthuzo. HPMC yokhala ndi malo osungira madzi ofunikira imatsimikizira kugwira ntchito kwanthawi yayitali kwa zomangira. Mosiyana ndi izi, HPMC yokhala ndi mitengo yotsika yosungira madzi imatha kupangitsa kuti pakhale nyumba zosakwanira zomanga, kulumikizana kosakwanira komanso kuchepera, zomwe zimapangitsa kuti zinthu zomanga zikhale zolephera.

Pomaliza

Kuyesa kusunga madzi ndi chinthu chofunikira kwambiri pakuzindikira mtundu wa HPMC womwe umagwiritsidwa ntchito pantchito yomanga. Kuyesaku kumathandizira kuyeza moyenera momwe HPMC imasungira madzi kuti iwonetsetse kuti ikukwaniritsa zofunikira pakugwiritsa ntchito. HPMC ili ndi kusungirako kwamadzi kwakukulu, kumapereka magwiridwe antchito opitilira muyeso, kulumikizana bwino, kung'ung'udza ndikuwonjezera kulimba kwa zida za simenti. Chifukwa chake, pantchito yomanga, ndikofunikira kuchita mayeso osunga madzi pa HPMC kuti muwonetsetse kuti chomaliza chomaliza.