Chimodzi mwa kusiyana kwakukulu pakati pa matope owuma ndi matope achikhalidwe ndikuti matope owuma amasinthidwa ndi zochepa zowonjezera mankhwala. Kuonjezera mtundu umodzi wowonjezera ku matope owuma kumatchedwa primary modification, kuwonjezera zowonjezera ziwiri kapena zingapo ndikusintha kwachiwiri. Ubwino wa matope owuma umadalira kusankha kolondola kwa zigawo ndi kugwirizanitsa ndi kugwirizanitsa zigawo zosiyanasiyana. Zowonjezera zamankhwala ndizokwera mtengo ndipo zimakhudza kwambiri zinthu zamatope owuma. Choncho, posankha zowonjezera, kuchuluka kwa zowonjezera ziyenera kukhala poyamba. Zotsatirazi ndizofotokozera mwachidule za kusankha kwa mankhwala owonjezera a cellulose ether.
Ma cellulose ether, omwe amadziwikanso kuti rheological modifier, mtundu wa admixture omwe amagwiritsidwa ntchito kuti asinthe mawonekedwe a rheological wa matope atsopano osakanikirana, pafupifupi amagwiritsidwa ntchito mumtundu uliwonse wamatope. Zinthu zotsatirazi ziyenera kuganiziridwa posankha mitundu yosiyanasiyana komanso kuchuluka kwake:
(1) Kusunga madzi pa kutentha kosiyana;
(2) kukhuthala, kukhuthala;
(3) Ubale pakati pa kusasinthasintha ndi kutentha, ndi chikoka pa kusasinthasintha pamaso pa electrolyte;
(4) mawonekedwe ndi digiri ya etherification;
(5) kusintha kwa thixotropy ndi udindo luso la matope (chomwe chili chofunika matope TACHIMATA pa ofukula pamwamba);
(6) Kuwonongeka kwa chiwerengero, chikhalidwe ndi kusungunuka kwathunthu.
Kuwonjezera pa kuwonjezera pa cellulose ether mu matope owuma (monga methyl cellulose ether), akhoza kuwonjezera vinyl polyvinyl acid ester, ndiko kuti, kusinthidwa kwachiwiri. The inorganic binder mu matope (simenti, gypsum) imatha kutsimikizira mphamvu zopondereza, koma imakhala ndi mphamvu zochepa pakulimba kwamphamvu ndi mphamvu yopindika. Vinyl polyvinyl ester imapanga filimu yotanuka mu dzenje la miyala ya simenti, kupanga matope amatha kunyamula katundu wambiri, kupititsa patsogolo kukana. Zatsimikiziridwa ndi chizolowezi kuti powonjezera milingo yosiyanasiyana ya methyl cellulose etha ndi vinyl polyvinyl ester mu matope owuma, matope owonda opaka mbale, matope opaka, matope okongoletsera, matope a konkriti wonyezimira ndi matope odzipangira okha. akhoza kukonzekera. Kusakaniza ziwirizi sikungowonjezera ubwino wa matope, komanso kumapangitsanso bwino ntchito yomanga.
M'malo mogwiritsa ntchito, kuti muwonjezere magwiridwe antchito, ndikofunikira kugwiritsa ntchito ma admixtures angapo. Machesi abwino pakati pa gawo lowonjezera, mlingo woyenera wa mlingo, chiwerengero, akhoza kuchokera kuzinthu zosiyanasiyana kukhala ndi zotsatira zina kuti apititse patsogolo ntchito ya matope, koma zotsatira zake zosinthidwa za matope pamene zikugwiritsidwa ntchito payekha ndizochepa, nthawi zina zimakhala ndi zotsatira zoipa, monga monga ulusi umodzi wa doped, kuwonjezera kumamatira kwa matope, kuchepetsa kuchuluka kwa stratification nthawi yomweyo, Komabe, kumwa madzi amatope kumawonjezeka kwambiri ndikusungidwa mu slurry, zomwe zimabweretsa kuchepa kwa mphamvu yopondereza. Pamene mpweya wolowetsa mpweya umawonjezeredwa, digiri ya matope ya delamination ndi kumwa madzi kumatha kuchepetsedwa kwambiri, koma mphamvu yopondereza yamatope idzachepa chifukwa cha thovu zambiri. Kupititsa patsogolo zomangamanga matope ntchito pazipita, pamene kupewa kuvulaza katundu wina, mphamvu ya zomangamanga matope kusasinthasintha, digiri ya stratification ndi kukwaniritsa zofunika uinjiniya ndi malamulo pa specifications luso, pa nthawi yomweyo, musagwiritse ntchito laimu putty, kupulumutsa simenti. , kuteteza chilengedwe, etc., kuchokera kuchepetsa madzi, mamasukidwe akayendedwe, madzi thickening ndi mpweya-entraining plasticizing kaonedwe, M'pofunika kuchita zinthu zonse kukhala ndi gwiritsani ntchito zosakaniza.
Nthawi yotumiza: Apr-29-2022