Ufa wa ufa wa putty nthawi zambiri umatanthawuza chodabwitsa kuti pamwamba pa zokutira za putty zimakhala za ufa ndipo zimagwa pambuyo pomanga, zomwe zidzakhudza mphamvu yomangira ya putty ndi kulimba kwa zokutira. Chodabwitsa ichi cha ufa chikugwirizana ndi zinthu zambiri, chimodzi mwa izo ndi ntchito ndi khalidwe la hydroxypropyl methylcellulose (HPMC) mu putty powder.
1. Udindo wa HPMC mu putty powder
HPMC, monga chowonjezera chomwe chimagwiritsidwa ntchito kwambiri, chimagwiritsidwa ntchito kwambiri pomanga, kuphatikiza ufa wa putty, matope, guluu, ndi zina. Ntchito zake zazikulu ndi izi:
Kulimbitsa mphamvu: HPMC ikhoza kuonjezera kusasinthasintha kwa ufa wa putty, kupangitsa kuti zomangamanga zikhale zosavuta komanso kupewa kutsetsereka kapena kutuluka kwa ufa wa putty panthawi yomanga.
Kusungirako madzi: HPMC imakhala ndi madzi abwino osungira madzi, omwe amatha kupititsa patsogolo ntchito ya ufa wa putty ndikuletsa putty kutaya madzi mofulumira panthawi yowumitsa, zomwe zimapangitsa kuti pakhale kusweka kapena kuchepa.
Kumamatira bwino: HPMC ikhoza kuonjezera kuphatikizika kwa ufa wa putty, kuti athe kumamatira bwino khoma kapena gawo lina laling'ono, kuchepetsa zochitika za mavuto monga kugwetsa ndi kugwa.
Kupititsa patsogolo ntchito yomanga: Kuwonjezera HPMC ku putty powder kumatha kupititsa patsogolo madzi ndi pulasitiki ya zomangamanga, kupanga ntchito yomanga bwino, ndi kuchepetsa zinyalala.
2. Zifukwa za putty powder pulverization
Putty pulverization ndi vuto lodziwika bwino ndi zifukwa zovuta, zomwe zitha kukhala zokhudzana ndi izi:
Vuto la gawo lapansi: Mayamwidwe amadzi a gawo lapansili ndi amphamvu kwambiri, zomwe zimapangitsa kuti putty kutaya chinyontho mwachangu ndikulimba mosakwanira, zomwe zimapangitsa kuti pulveration.
Vuto la formula ya putty: Njira yolakwika ya ufa wa putty, monga kuchuluka kwa zinthu za simenti (monga simenti, gypsum, etc.), kukhudza mphamvu ndi kulimba kwa putty.
Vuto la njira yomanga: Kumanga kosakhazikika, kutentha kwakukulu kozungulira kapena chinyezi chochepa kungayambitsenso ufa wa putty kuti uphwanye panthawi yowumitsa.
Kusamalira molakwika: Kulephera kusunga putty mu nthawi mutatha kumanga kapena kupita patsogolo pa njira ina kungayambitse ufa wonyezimira popanda kuumitsa.
3. Ubale pakati pa HPMC ndi kupukutira
Monga chowonjezera komanso chosungira madzi, ntchito ya HPMC mu putty powder imakhudza mwachindunji ubwino wa putty. Mphamvu ya HPMC pa ufa imawonekera makamaka muzinthu izi:
(1) Mphamvu ya kusunga madzi
Ufa wa ufa wa putty nthawi zambiri umagwirizana ndi kutuluka kwamadzi mwachangu mu putty. Ngati kuchuluka kwa HPMC kuwonjezeredwa sikukwanira, ufa wa putty umataya madzi mofulumira panthawi yowumitsa ndipo umalephera kulimbitsa bwino, zomwe zimapangitsa kuti pakhale ufa. Malo osungira madzi a HPMC amathandiza putty kusunga chinyezi choyenera panthawi yowumitsa, kulola kuti putty ikhale yolimba pang'onopang'ono ndikupewa ufa chifukwa cha kutaya madzi mofulumira. Choncho, kusunga madzi kwa HPMC n'kofunika kwambiri kuti muchepetse ufa.
(2) Mphamvu ya kukhuthala
HPMC ikhoza kuonjezera kusasinthasintha kwa ufa wa putty, kuti putty ikhale yogwirizana kwambiri ndi gawo lapansi. Ngati khalidwe la HPMC ndi losauka kapena likugwiritsidwa ntchito molakwika, lidzakhudza kusasinthasintha kwa ufa wa putty, kupangitsa kuti madzi ake awonongeke kwambiri, zomwe zimapangitsa kuti pakhale kusamvana ndi makulidwe osagwirizana panthawi yomanga, zomwe zingapangitse kuti ufa wa putty uume mofulumira kwambiri m'deralo, potero. kuyambitsa ufa. Kuonjezera apo, kugwiritsa ntchito mopitirira muyeso kwa HPMC kudzachititsanso kuti pamwamba pa ufa wa putty ukhale wosalala kwambiri pambuyo pomanga, zomwe zimakhudza kumamatira ndi zokutira ndikuyambitsa ufa.
(3) Synergy ndi zipangizo zina
Mu putty powder, HPMC nthawi zambiri amagwiritsidwa ntchito limodzi ndi zinthu zina za simenti (monga simenti, gypsum) ndi zodzaza (monga heavy calcium powder, talcum powder). Kuchuluka kwa HPMC yogwiritsidwa ntchito komanso kulumikizana kwake ndi zida zina kumakhudza kwambiri magwiridwe antchito onse a putty. Kukonzekera kosayenera kungayambitse mphamvu yosakwanira ya ufa wa putty ndipo pamapeto pake kumayambitsa ufa. Kugwiritsa ntchito moyenera kwa HPMC kumatha kuthandizira kukonza magwiridwe antchito ndi mphamvu ya putty ndikuchepetsa vuto la ufa lomwe limayambitsidwa ndi zinthu zosakwanira kapena zosagwirizana ndi simenti.
4. Mavuto a HPMC amatsogolera ku ufa
Kuwonjezera pa kuchuluka kwa HPMC yogwiritsidwa ntchito, khalidwe la HPMC palokha lingakhudzenso ntchito ya putty powder. Ngati khalidwe la HPMC silinagwirizane, monga chiyero chochepa cha cellulose komanso kusagwira bwino ntchito yosungira madzi, zidzakhudza mwachindunji kusungirako madzi, ntchito yomangamanga ndi mphamvu ya putty powder, ndikuwonjezera chiopsezo cha ufa. Otsika HPMC sikovuta kokha kupereka madzi okhazikika kusunga madzi ndi thickening zotsatira, koma zingayambitse pamwamba akulimbana, ufa ndi mavuto ena pa kuyanika ndondomeko putty. Chifukwa chake, kusankha HPMC yapamwamba ndikofunikira kuti mupewe zovuta za ufa.
5. Zotsatira za zinthu zina pa ufa
Ngakhale kuti HPMC imagwira ntchito yofunika kwambiri pa ufa wa putty, ufa nthawi zambiri umakhala chifukwa cha kuphatikizika kwa zinthu zambiri. Zinthu zotsatirazi zingayambitsenso ufa:
Chikhalidwe cha chilengedwe: Ngati kutentha ndi chinyezi cha malo omanga ndi okwera kwambiri kapena otsika kwambiri, zidzakhudza kuthamanga kwa kuyanika ndi kuchiritsa komaliza kwa ufa wa putty.
Chithandizo chosayenera cha gawo lapansi: Ngati gawo lapansi silili loyera kapena pamwamba pa gawo lapansi limatenga madzi ochulukirapo, zimakhudza kumamatira kwa ufa wa putty ndikuyambitsa ufa.
Fomula ya ufa wa Irrational putty: HPMC yochuluka kapena yochepa kwambiri imagwiritsidwa ntchito, ndipo gawo la zipangizo za simenti ndizosayenera, zomwe zidzachititsa kuti pakhale kusamata kokwanira ndi mphamvu ya putty powder, potero kumayambitsa ufa.
Chochitika cha ufa cha putty powder chikugwirizana kwambiri ndi kugwiritsa ntchito HPMC. Ntchito yaikulu ya HPMC mu putty powder ndi kusunga madzi ndi kukhuthala. Kugwiritsa ntchito moyenera kungalepheretse kuchitika kwa ufa. Komabe, kupezeka kwa ufa kumadalira osati pa HPMC, komanso pazinthu monga mawonekedwe a putty powder, mankhwala a gawo lapansi, ndi malo omangamanga. Pofuna kupewa vuto la ufa, ndikofunikiranso kusankha HPMC yapamwamba kwambiri, kapangidwe kake koyenera, luso la zomangamanga la sayansi komanso malo abwino omangira.
Nthawi yotumiza: Oct-15-2024