Kuchepetsa ufa wa polmer ndi zomata zina zofanana (monga sime, staket, dongo, ndi zina zowonjezera, etc.] Pamene matope a ufa amawonjezeredwa ku madzi ndikulimbikitsidwa, pansi pa zochita za hydrophilic molimbika, zomwe zimakhala zokwanira kupanga filimu yotsitsiridwa bwino. Kupanga kwa mphira wa mphira ndi kosiyana, komwe kumakhudza chizolowezi cha matope ndi matope omwe ali ndi ufa wa atrate komanso zowonjezera zomwe zimapangitsa thixotropy, ndikuwonjezera mamasukidwe.
Nthawi zambiri amakhulupirira kuti makina omwe amasinthidwa ndi ufa wa matope mwatsopano ndikuti ufa wa mated
Pambuyo pa matope atsopano omwe ali ndi mwayi wobalalitsa wa latex upangiri umapangidwa, ndikuyamwa madzi pamtunda, madzi pang'onopang'ono amatsika pang'ono, ndipo madziwo amachepetsa pang'onopang'ono. pamapeto pake mufilimu. Njira ya mafayilo a polymer imagawidwa magawo atatu. Mu gawo loyamba, tinthu tating'onoting'ono timasunthira momasuka mu mawonekedwe a brownian kuyenda koyambirira. Madzi amatuluka, kusuntha kwa tinthuko kumakhala kokha komanso kokhazikika, komanso zovuta zam'madzi pakati pa madzi ndipo mpweya zimawapangitsa kuti azitsatira pang'onopang'ono. Mu gawo lachiwiri, tinthu tating'onoting'ono titayamba kulumikizana, madzi omwe ali pawiya amatuluka pamtunda wa zigawo za mapepalawo amasulidwa pamlingo woti apangitse kuti awonongeke, ndipo madzi otsalawo amadzaza ma pores, ndipo filimuyo imapangidwa movomerezeka. Gawo lachitatu ndi lomaliza limapangitsa kusiyanasiyana (nthawi zina kumatchedwa kuti kudzitsatira) kwa mamolekyulu a polymer kuti apange filimu yopitilira. Mukamapanga makanema, tinthu tating'onoting'ono tating'ono tinthu tating'onoting'ono tomwe timaphatikizidwa ndi gawo latsopano lowonda lili ndi nkhawa kwambiri. Mwachidziwikire, kuti amwambo omwazikulu kuti athe kupanga kanema mu matope, filimu yotsika yopanga kutentha (Mft) iyenera kutsimikiziridwa kukhala yotsika kuposa kutentha kwa matope.
Ma Colloids - mowa wa polyvinyl uyenera kulekanitsidwa ndi dongosolo la ma polimane. Ili si vuto mu matope a alkaline a alkaline, chifukwa mowa wa polyvinel udzawonongedwa ndi simenti, ndipo adsorpption wa zinthu za quartz zimalekanitsa mowa, popanda kuteteza a Hydrophilic Colloid. , Kanemayo adapanga chifukwa chofalitsa ufa wokwezedwa wa latx, womwe ndi wopanda madzi, sungathe kugwira ntchito mu nyengo zowuma, komanso m'madzi nthawi yayitali. Zachidziwikire, m'magulu omwe si alkalinine, monga gypsum kapena machitidwe omwe amakhala ndi mafilimu okwanira
Ndi mapangidwe omaliza a filimu ya Polymer, dongosolo lopangidwa ndi avoric ndi okhazikika limapangidwa m'matope, kuti, mafupa owoneka bwino ndi duwa lopangidwa ndi ufa wopangidwa mu kusiyana komanso malo olimba. network yosinthika. Mphamvu yamphamvu ndi coutheon of the Polymer Remen yopangidwa ndi ufa wa latx imakulitsidwa. Chifukwa cha kusinthasintha kwa polymer, kuthekera kwapamwamba kwambiri kuposa kukhwima kwa mwala wa simenti, kusintha kwa matope kumayendetsedwa bwino, ndipo zotsatira zake zofalitsa kupsinjika kumayenda bwino, potengera kukana kwa matope.
Ndi kuwonjezeka kwa zomwe zimapezeka pakumwa polima, dongosolo lonse limayamba kulowera pulasitiki. Pankhani yokhudza ufa wa latedx, gawo la polymer mu matonthozo limapitilira gawo lazomwe limayamba limaposa gawo lazomwe limapangitsa kuti lizikhalapo ndikusintha kwa matope, komanso kusintha kwa matope a polimati. Kuphatikiza kwa ufa wofatsa polima kumapereka filimu ya polymer (filimu ya latedx) kuti mupange mawonekedwe a matope omwe amagwiritsidwa ntchito ndi matope. Kudzera mu matope azomwezi, potengera mphamvu ya matongu. Kupezeka kwamphamvu kwambiri Kusintha kwamphamvu komanso kwamphamvu kwambiri kumathandizira kusintha matope ndi kutukwana kwa matope. Njira yowonjezereka kwamphamvu ndi motere: Kuphatikiza apo, madera omwe aphatikizidwa a polymon amalepheretsanso kuphatikiza ma microcracks omwe akudutsa. Chifukwa chake, kufalikira kwa polima polima kumawonjezera nkhawa komanso kulephera kwa zinthuzo.
Kanema wa Polymer mu matope osinthika ali ndi chofunikira kwambiri pakulimbana kwa matope. Ufa wokwezeka polimaga wogawika pamlingowo umagwiranso ntchito inayake atamwazidwa ndikupangidwa mu filimu, yomwe ikuwonjezera chotsatsa ku zida zokhudzana ndi zomwe akumana nazo. Mu micrestructuction malo omwe ali pakati pa ufa wa ufa wolumikizidwa ndi matope ndi matanthwe, filimuyo imapanga matope a ceramited matrix. Malo omwe ali pakati pa zinthu ziwiri zopanda chinyengo ndi malo apadera omwe amakhala pachiwopsezo chomwe ming'alu yovuta imakhala ndikutsogolera kuwonongeka. Chifukwa chake, kuthekera kwa mafilimu a Latx kuti muchiritse miseche yovuta kumathandiza gawo lofunikira m'masamba a tiles.
Nthawi yomweyo, kufalikira kwa polima polima komwe kuli ndi ethylene kuli ndi zotsatsa zambiri kwa orthec magawo, makamaka zinthu zofananira, monga polyvinyl chloride ndi polystyrene. Chitsanzo chabwino cha
Post Nthawi: Oct-31-2022