I-Gypsum sisixhobo sokwakha esiqhelekileyo esisetyenziselwa ukuhombisa udonga lwangaphakathi nolwangaphandle. Ithandwa ngenxa yokuqina kwayo, ubuhle bayo, kunye nokumelana nomlilo. Nangona kunjalo, nangona ezi zibonelelo, i-plaster inokuba nemingxunya ngokuhamba kwexesha, nto leyo enokuphazamisa ukuthembeka kwayo kwaye ichaphazele inkangeleko yayo. Ukuqhekeka kwe-plaster kunokwenzeka ngezizathu ezahlukeneyo, kubandakanya izinto ezingqongileyo, ukwakhiwa okungafanelekanga, kunye nezixhobo ezikumgangatho ophantsi. Kwiminyaka yakutshanje, izongezo ze-hydroxypropyl methylcellulose (HPMC) ziye zavela njengesisombululo sokuthintela ukuqhekeka kwe-plaster. Eli nqaku ligxininisa ukubaluleka kwezongezo ze-HPMC ekuthinteleni imingxunya ye-plaster kunye nendlela ezisebenza ngayo.
Zithini izongezo ze-HPMC kwaye zisebenza njani?
Izongezo ze-HPMC zisetyenziswa kakhulu kwishishini lokwakha njengezinto zokugquma kunye neziguquli ze-viscosity kwizicelo ezininzi, kuquka ukuplasta. Zivela kwi-cellulose, ziyanyibilika emanzini abandayo nashushu kwaye ngenxa yoko zingasetyenziswa kwiindlela ezahlukeneyo zokwakha. Xa zixutywe namanzi, umgubo we-HPMC wenza into efana nejeli enokongezwa kwimixube ye-stucco okanye isetyenziswe njengengubo kumphezulu weendonga eziplasta. Ubume obufana nejeli be-HPMC buyivumela ukuba isasazeke ngokulinganayo, ithintele ukufuma okugqithisileyo komswakama kwaye inciphise umngcipheko wokuqhekeka.
Inzuzo ebalulekileyo yezongezo ze-HPMC kukukwazi ukulawula izinga lokufuma kwe-gypsum, okuvumela amaxesha afanelekileyo okubeka. Ezi zongezo zenza umqobo ocothisa ukukhutshwa kwamanzi, ngaloo ndlela kunciphisa amathuba okoma ngaphambi kwexesha kunye nokuqhekeka okulandelayo. Ukongeza, i-HPMC inokusasaza amaqamza omoya kumxube we-gypsum, nto leyo enceda ukuphucula ukusebenza kwayo kwaye yenze kube lula ukuyisebenzisa.
Nqanda imifantu yeplasta ngokusebenzisa izongezo zeHPMC
Ukomisa ukuncipha
Esinye sezizathu eziphambili zokuqhekeka kweplasta kukuqhekeka komphezulu weplasta okomisayo. Oku kwenzeka xa i-stucco yomile kwaye incipha, nto leyo ebangela ukuqhekeka. Izongezo ze-HPMC zinokunceda ekunciphiseni ukuqhekeka kokomisayo ngokunciphisa isantya apho amanzi aphuma khona kumxube we-gypsum, nto leyo ekhokelela ekusasazweni kwamanzi okulinganayo. Xa umxube weplasta unomlinganiselo wokufuma ohambelanayo, isantya sokomisa siyalingana, nto leyo enciphisa umngcipheko wokuqhekeka nokuqhekeka.
Ukuxuba okungafanelekanga
Kwiimeko ezininzi, iplasta engaxutywanga kakuhle iya kubangela iindawo ezibuthathaka ezinokuqhekeka ngokulula. Ukusebenzisa izongezo ze-HPMC kwimixube ye-gypsum kunokunceda ukuphucula iimpawu zokwakha nokwenza inkqubo yokwakha ibe lula. Ezi zongezo zisasaza amanzi ngokulinganayo kuyo yonke iplasta, zivumela amandla angaguqukiyo kwaye zinciphise umngcipheko wokuqhekeka.
ukuguquguquka kobushushu
Ukutshintshatshintsha kobushushu obugqithisileyo kunokubangela ukuba i-stucco yande kwaye inciphe, nto leyo ebangela ukuxinana okunokubangela ukuqhekeka. Ukusetyenziswa kwezongezo ze-HPMC kunciphisa izinga lokuphuma kwamanzi emkhenkceni, ngaloo ndlela kucothisa inkqubo yokunyibilika kwaye kunciphise umngcipheko wokwanda ngokukhawuleza kobushushu. Xa i-plaster yoma ngokulinganayo, inciphisa amathuba okuba iindawo ezikufutshane zome kakhulu, nto leyo ebangela ukuxinana okunokubangela ukuqhekeka.
Ixesha lokunyanga elaneleyo
Mhlawumbi eyona nto ibalulekileyo ekuqhekekeni kweplasta kukungafumani ixesha elaneleyo lokunyibilika. Izongezo zeHPMC zicothisa ukukhululwa kwamanzi kumxube wegypsum, ngaloo ndlela zandisa ixesha lokuseta. Amaxesha okunyibilika amade aphucula ukuqina kwestucco kwaye anciphise ukubonakala kwamabala abuthathaka anokuqhekeka. Ukongeza, izongezo zeHPMC zinceda ekudaleni umqobo kwiimeko zemozulu ezimbi kakhulu ezinokubangela ukuqhekeka kwiindawo ezivezwe.
ukuququmbela
Ukuqhekeka kwe-stucco kuqhelekile kushishino lokwakha kwaye kunokukhokelela ekulungisweni okubizayo kunye namabala angathandekiyo. Nangona kukho izinto ezininzi ezinokubangela ukuqhekeka kwi-plaster, ukusebenzisa izongezo ze-HPMC sisisombululo esisebenzayo sokuthintela ukuqhekeka. Umsebenzi wezongezo ze-HPMC kukwenza umqobo othintela ukufuma okugqithisileyo komswakama kwaye unciphise ukushwabana kokoma kunye nokwanda kobushushu. Ezi zongezo zikwaphucula ukusebenza, nto leyo ekhokelela ekubeni namandla angaguquguqukiyo kunye nomgangatho ongcono we-plaster. Ngokongeza izongezo ze-HPMC kwimixube ye-plaster, abakhi banokuqinisekisa ukuba umphezulu uhlala ixesha elide, ubukeka unomtsalane.
Ixesha lokuthumela: Septemba-26-2023