Mphamvu ya Cellulose Ether (HPMC/MHEC) pa Air Content of Mortar

Tondo ndi chisakanizo cha simenti, mchenga ndi madzi omwe amagwiritsidwa ntchito pomanga zinthu zosiyanasiyana monga kumanga, kupaka pulasitala ndi kukonza matailosi. Ubwino wa matope ndi wofunika kwambiri kuti nyumbayo ikhale yolimba komanso yolimba. Mpweya wa matopewo umagwira ntchito yaikulu pakugwira ntchito kwa matope. Kukhalapo kwa thovu la mpweya mumatope kumapangitsa kuti ntchito yake ikhale yabwino, imachepetsa kuchepa ndi kusweka, komanso imawonjezera mphamvu zake zotetezera kutentha. Ma cellulose ethers, monga hydroxypropylmethylcellulose (HPMC) ndi methylhydroxyethylcellulose (MHEC), amagwiritsidwa ntchito kwambiri pantchito yomanga monga zowonjezera kuti apititse patsogolo ubwino ndi ntchito ya matope. Nkhaniyi ikufotokoza momwe ma cellulose ethers amakhudzira mpweya wamatope.

Zotsatira za cellulose ether pamlengalenga wamatope:

Mpweya wa matopewo umadalira zinthu zosiyanasiyana monga chiŵerengero cha simenti ya madzi, chiŵerengero cha mchenga ndi simenti, nthawi yosakaniza, ndi njira yosakaniza. Kuphatikizika kwa ma cellulose ethers kumatope kumatha kukhudza kwambiri mpweya wake. HPMC ndi MHEC ndi ma polima a hydrophilic omwe amatha kuyamwa madzi ndikumwazikana molingana ndi kusakaniza kwamatope. Amakhala ngati ochepetsera madzi ndikuwongolera magwiridwe antchito a matope. Kuonjezera ma cellulose ethers ku kusakaniza kwamatope kumachepetsa kuchuluka kwa madzi ofunikira kuti akwaniritse kugwirizana komwe kukufunikira, motero kuchepetsa mpweya wa matope.

Komabe, zotsatira za ma cellulose ethers pa mpweya wa matope si nthawi zonse zoipa. Izi zimatengera mlingo ndi mtundu wa cellulose ether yomwe imagwiritsidwa ntchito. Akagwiritsidwa ntchito moyenera, ma cellulose ethers amatha kuonjezera mpweya wa matope mwa kuwonjezera kukhazikika kwawo ndikuchepetsa kusiyana. Cellulose ether imagwira ntchito ngati stabilizer, yomwe ingateteze bwino kugwa kwa pores panthawi yokonza ndi kuumitsa kwa matope. Izi zimawonjezera kulimba ndi mphamvu ya matope.

Chinthu china chomwe chimakhudza mpweya wa matope ndi njira yoyenera yosakaniza. youma kusanganikirana mapadi efa munali matope ali osavomerezeka chifukwa zidzachititsa agglomeration wa mapadi etere particles ndi mapangidwe apezeka mu mtondo. Kusakaniza konyowa kumalimbikitsidwa chifukwa kumatsimikizira kubalalitsidwa kofanana kwa cellulose ether mu osakaniza amatope ndikuwongolera magwiridwe antchito ake.

Ubwino wogwiritsa ntchito cellulose ether mumatope:

Ma cellulose ethers monga HPMC ndi MHEC amapereka maubwino angapo akagwiritsidwa ntchito mumatope. Amathandizira kuti matope azitha kugwira ntchito komanso kumamatira kwamatope, amachepetsa kuchuluka kwa simenti yamadzi ndikuwonjezera kusasinthika kwamatope. Iwo kumapangitsa durability, mphamvu ndi elasticity wa matope. Ma cellulose ethers amagwira ntchito ngati zokhuthala ndi zolimbitsa thupi ndikuletsa kugwa kwa thovu la mpweya pakuyika ndi kuuma kwa matope. Izi zimawonjezera kukana kwa kuzizira, kumachepetsa kuchepa komanso kumawonjezera kukana kwa ming'alu. Ma cellulose ether alinso ndi mphamvu zosunga madzi bwino, potero amawongolera kuchiritsa ndi kuthirira kwamatope.

Pomaliza, HPMC, MHEC ndi ma cellulose ethers amagwiritsidwa ntchito kwambiri ngati zowonjezera mumakampani omanga kuti apititse patsogolo luso ndi magwiridwe antchito amatope. Mpweya wamatope ndi chinthu chofunika kwambiri chomwe chimakhudza ntchito yake, ndipo kuwonjezera kwa cellulose ether kungakhudze kwambiri mpweya wamatope. Komabe, zotsatira za ma cellulose ethers pa mpweya wa matope si nthawi zonse zoipa. Ma cellulose ethers amatha kuwonjezera mpweya wamatope ndikuwongolera magwiridwe ake ngati agwiritsidwa ntchito moyenera komanso ndi njira zosakanikirana bwino. Ubwino wogwiritsa ntchito ma cellulose ethers mumtondo umaphatikizapo kugwirira ntchito bwino, kumamatira, kusasunthika, kulimba, kulimba komanso kukhazikika kwa matope, komanso kuchepetsa kuchepa komanso kuwongolera kukana kwa ming'alu.