Ufa wa latex wosinthika umagwiritsidwa ntchito mu chophimba chosalowa madzi cha JS cha gawo limodzi, matope omangira a polystyrene board, matope oteteza pamwamba, matope oteteza kutentha kwa tinthu ta polystyrene, matope omatira, matope odziyimira pawokha, matope osakanikirana ndi madzi, putty, ndi zina zotero. Ntchito yosintha zinthu zopangira gelling yakhala ikugwiritsidwa ntchito kwambiri.
Kuonjezera ufa wa latex wosungunukanso mu ufa wa putty kungathandize kulimbitsa mphamvu zake, kukhala ndi mphamvu zolimba komanso zogwirira ntchito, komanso kuthandiza kulimbitsa kuuma kwake. Uli ndi kukana madzi bwino, kulowa m'madzi bwino, komanso umakhala wolimba kwambiri. Alkaline, sutha kutha, ndipo ukhoza kulimbitsa kusunga madzi, kuwonjezera nthawi yotseguka, komanso kulimbitsa kulimba.
Pamene ufa wa latex wosungunukanso ukasakanizidwa mofanana mu ufa wa putty ndikusakanikirana ndi madzi, umafalikira kukhala tinthu tating'onoting'ono ta polima; simenti ya simenti imapangidwa pang'onopang'ono kudzera mu madzi oyamba a simenti, ndipo gawo lamadzimadzi limapangidwa ndi Ca(OH)2 mu njira yothira madzi. Yokhuta, pomwe ufa wa latex umapanga tinthu ta polima ndikuyika pamwamba pa simenti ya simenti/tinthu ta simenti tosasungunuka; pamene simenti imawonjezeredwa madzi, madzi omwe ali mu capillaries amachepa, ndipo tinthu ta polima timachepetsedwa pang'onopang'ono mu capillaries. Kusakaniza kwa tinthu ta simenti tomatira/tosasungunuka ndi pamwamba pa filler kumapanga gawo loyandikana; pansi pa mphamvu ya hydration reaction, base layer absorption ndi surface evaporation, madzi amachepetsedwanso, ndipo gawo lopangidwa losakanizidwa limasonkhana mu filimu, yomwe imalumikiza hydration reaction product mu Pamodzi amapanga mawonekedwe athunthu a netiweki. Dongosolo lophatikizika lopangidwa ndi simenti ya hydration ndi latex powder film formation likhoza kukonza kukana kwa dynamic cracking kwa putty kudzera mu joint action.
Putty yomwe imagwiritsidwa ntchito ngati gawo losinthira pakati pa kutchinjiriza khoma lakunja ndi utoto siyenera kukhala yolimba kuposa matope opaka pulasitala, apo ayi ming'alu imachitika mosavuta. Mu dongosolo lonse lotchinjiriza, kusinthasintha kwa putty kuyenera kukhala kwakukulu kuposa kwa zinthu zoyambira. Mwanjira imeneyi, putty imatha kusintha bwino kusintha kwa substrate ndikusunga kusintha kwake pogwiritsa ntchito zinthu zakunja, kuchepetsa kupsinjika, ndikuchepetsa kuthekera kwa ming'alu ndi kuchotsedwa kwa chophimbacho.
Nthawi yotumizira: Marichi-06-2023