Putty ndi pulasitala ndi zida zodziwika zomwe zimagwiritsidwa ntchito kwambiri pantchito yomanga. Ndizofunikira pokonzekera makoma ndi denga lopaka utoto, kuphimba ming'alu, kukonzanso malo owonongeka, ndikupanga malo osalala, ofanana. Amapangidwa ndi zinthu zosiyanasiyana kuphatikiza simenti, mchenga, laimu ndi zina zowonjezera kuti apereke magwiridwe antchito ndi mawonekedwe ofunikira. Methylhydroxyethylcellulose (MHEC) ndi imodzi mwazowonjezera zomwe zimagwiritsidwa ntchito popanga putty ndi pulasitala ufa. Amagwiritsidwa ntchito kupititsa patsogolo mawonekedwe a ufa, kupititsa patsogolo ntchito zawo ndikuwonjezera ntchito zawo.
Ubwino wogwiritsa ntchito MHEC kupanga putty ndi gypsum powder
MHEC imachokera ku cellulose ndipo imapangidwa kudzera mu njira yosinthira mankhwala. Ndi madzi osungunuka omwe amagwiritsidwa ntchito kwambiri ngati thickener, stabilizer ndi emulsifier muzomangamanga. Mukawonjezeredwa ku putty ndi gypsum powders, MHEC imavala tinthu tating'onoting'ono, timapereka chitetezo chomwe chimawalepheretsa kuti asagwere ndi kukhazikika. Izi zimapanga kusakaniza kowonjezereka, kosasinthasintha komwe kumakhala kosavuta kugwira ntchito ndikupereka mapeto abwino.
Ubwino umodzi wogwiritsa ntchito MHEC mu putty ndi pulasitala ndikuti imakulitsa zomwe zimasunga madzi. MHEC imatenga ndikusunga chinyezi, kuonetsetsa kuti kusakaniza kumakhalabe kogwiritsidwa ntchito ndipo sikuuma mwachangu. Izi ndizofunikira makamaka m'malo otentha komanso owuma kumene kusakaniza kumakhala kosagwiritsidwa ntchito, zomwe zimapangitsa kuti mapeto ake awonongeke.
MHEC imapangitsanso ntchito komanso nthawi yogwirira ntchito ya putties ndi pulasitala. MHEC imapangitsa kusakaniza ndi kugwiritsa ntchito kusakaniza kukhala kosavuta posunga chinyezi ndikuletsa kusakaniza kuti zisaume. Kuonjezera apo, mawonekedwe osalala a MHEC, a buttery amalola kuti putty ndi stucco zifalikire mofanana pamwamba pa nthaka popanda kusiya zotupa kapena ming'oma, kuonetsetsa kuti palibe cholakwika, chokongola.
Kuphatikiza pa kukulitsa mawonekedwe ndi magwiridwe antchito a putty ndi pulasitala, MHEC imathanso kuwongolera mawonekedwe awo omangira. Popanga chitetezo chozungulira tinthu ting'onoting'ono, MHEC imawonetsetsa kuti amalumikizana bwino pamwamba pomwe akuchiza. Izi zimapangitsa kuti pakhale malo olimba, olimba kwambiri omwe sangathe kusweka, kupukuta kapena kusenda pakapita nthawi.
Ubwino winanso wofunikira wogwiritsa ntchito MHEC mu putty ndi pulasitala ndikuti kumawonjezera kukana kwawo mpweya ndi chinyezi. Izi zikutanthauza kuti putty kapena stucco ikagwiritsidwa ntchito, imalimbana ndi kuwonongeka kwa mpweya ndi chinyezi, kuonetsetsa kuti pamwamba pake imakhala yolimba komanso yokongola kwa nthawi yayitali.
Kukhathamiritsa Kuchita kwa Putty ndi Gypsum Pogwiritsa Ntchito MHEC
Kuti muwongolere magwiridwe antchito a putty ndi pulasitala ufa, ndikofunikira kuwonetsetsa kuti MHEC ikugwiritsidwa ntchito moyenera. Izi zikutanthauza kuti kugwiritsa ntchito kuchuluka koyenera kwa MHEC kumatha kukwaniritsa zomwe mukufuna komanso mawonekedwe a putty kapena stucco yomwe imapangidwa.
Zinthu zachilengedwe zomwe zingakhudze ntchito ya putty ndi gypsum powder ziyenera kuganiziridwa. Mwachitsanzo, m'madera otentha ndi owuma, MHEC yambiri ingafunike kuwonjezeredwa kuti zitsimikizire kuti kusakaniza kumakhalabe koyenera komanso kosasinthasintha.
Ndikofunikira kuwonetsetsa kuti putty kapena stucco imagwiritsidwa ntchito moyenera kuti ikwaniritse ntchito yake. Izi zikutanthauza kutsatira malangizo a wopanga mosamala ndikuwonetsetsa kuti osakaniza asakanizidwa bwino musanagwiritse ntchito. Kuonjezera apo, zida zapadera zingafunikire kuonetsetsa kuti putty kapena stucco ikugwiritsidwa ntchito mofanana komanso mosasinthasintha pamtunda womwe ukuchitiridwa.
MHEC ndi chowonjezera chofunikira chomwe chimagwiritsidwa ntchito popanga putty ndi pulasitala ufa. Iwo timapitiriza katundu ndi katundu wa zipangizozi, kusintha awo processability, madzi posungira, adhesion ndi kukana mpweya ndi chinyezi. Izi zimabweretsa kutha kokhazikika, kokhazikika komanso kowoneka bwino komwe sikungathe kusweka, kupukuta kapena kusenda pakapita nthawi. Pofuna kupititsa patsogolo ntchito ya putty ndi gypsum powder, ndikofunika kuonetsetsa kuti mlingo woyenera wa MHEC umagwiritsidwa ntchito, poganizira zachilengedwe zomwe zingakhudze ntchito yawo. Kuphatikiza apo, ndikofunikira kuyika putty kapena stucco moyenera kuti muwonjezere magwiridwe antchito ake ndikukwaniritsa zomwe mukufuna.
HEMC imagwiritsidwa ntchito popanga simenti kuti ipititse patsogolo katundu wake Hydroxyethyl methylcellulose (HEMC) ndi mankhwala omwe amagwiritsidwa ntchito kwambiri pantchito yomanga. Ndilo kugwirizana pakati pa workability, madzi posungira, thixotropy, etc. Masiku ano, mtundu watsopano wa mapadi ether akulandira chidwi kwambiri. Zomwe zakopa chidwi kwambiri ndi hydroxyethyl methylcellulose (MHEC).
Chimodzi mwa zinthu zofunika kwambiri zomwe zimatsimikizira ubwino wa zinthu za simenti ndi ntchito yosakaniza. Umu ndi momwe simenti ilili yosavuta kusakaniza, kupanga ndi kuika. Kuti izi zitheke, kusakaniza kwa simenti kumayenera kukhala madzimadzi okwanira kuti kuthira ndi kuyenda mosavuta, komanso kukhale kowoneka bwino kuti agwire mawonekedwe ake. MHEC ikhoza kukwaniritsa malowa powonjezera kukhuthala kwa simenti, motero kumapangitsa kuti ntchito yake ikhale yabwino.
MHEC imathanso kufulumizitsa hydration ya simenti ndikuwonjezera mphamvu zake. Mphamvu yomaliza ya simenti imadalira kuchuluka kwa madzi omwe amagwiritsidwa ntchito posakaniza. Madzi ochuluka amachepetsa mphamvu ya simenti, pamene madzi ochepa amachititsa kuti zikhale zovuta kugwira ntchito. MHEC imathandiza kusunga madzi enaake, motero kuonetsetsa kuti simenti imayenda bwino komanso imalimbikitsa mapangidwe amphamvu pakati pa tinthu ta simenti.
MHEC imathandizira kuchepetsa kuchuluka kwa ming'alu ya simenti. Pamene simenti ikuchiritsa, kusakaniza kumachepa, zomwe zingayambitse kupanga ming'alu ngati shrinkage sichiyendetsedwa. MHEC imalepheretsa kuchepa uku mwa kusunga madzi okwanira mu kusakaniza, potero kulepheretsa simenti kuti iwonongeke.
MHEC imagwiranso ntchito ngati filimu yoteteza pamwamba pa simenti, kuteteza madzi kuti asachoke pamwamba. Filimuyi imathandizanso kuti simenti ikhale ndi chinyezi choyambirira, ndikuchepetsanso mwayi wosweka.
MHEC ndiwothandizanso zachilengedwe. Choyamba, ndi biodegradable, kutanthauza kuti sikhala mu chilengedwe kwa nthawi yaitali. Chachiwiri, zingathandize kuchepetsa kuchuluka kwa simenti yofunika pa ntchito yomanga. Izi zili choncho chifukwa MHEC imawonjezera kugwirira ntchito ndi kukhuthala kwa simenti, kuchepetsa kufunikira kwa madzi owonjezera omwe amangowonjezera kusakaniza kwa simenti.
Kugwiritsa ntchito MHEC mu simenti kumapereka maubwino angapo ndipo kungathandize kwambiri pantchito yomanga. Imawonjezera kugwira ntchito kwa simenti yosakaniza, imachepetsa kuchuluka kwa ming'alu yomwe imapangidwa panthawi yochiritsa, imalimbikitsa simenti ya hydration ndi mphamvu, ndipo imakhala ngati filimu yoteteza pamwamba pa simenti. Kuphatikiza apo, MHEC ndiyabwino kwa chilengedwe. Choncho, MHEC ndi chinthu chofunika kwambiri pa ntchito yomangamanga chifukwa imapangitsa kuti simenti ikhale yabwino komanso imapereka phindu kwa ogwira ntchito komanso chilengedwe.
Nthawi yotumiza: Oct-18-2023