I-HPMC (i-Hydroxypropyl Methyl Cellulose) yimathiriyeli ye-polymer esetyenziswa ngokuqhelekileyo kwizinto zokwakha, ngakumbi kwizinto ezisekelwe kwi-samente kunye ne-gypsum-based based materials. Inonyibiliko oluhle lwamanzi, ukunamathela, ukugcinwa kwamanzi kunye neempawu ezityebileyo, ngoko ke isetyenziswa kakhulu kudaka, iputty powder, i-tile adhesive kunye nezinye izinto.
1. Izizathu zokunciphisa kunye nokuqhekeka kwezinto zokwakha
Ngethuba lenkqubo yokuqina, izinto zokwakha zihlala zinciphisa umthamo ngenxa yokunyuka kwamanzi, ukuphendulwa kweekhemikhali kunye nokutshintsha kwezinto zangaphandle zokusingqongileyo, okukhokelela ekugxininiseni uxinzelelo kunye nokwakheka kokuqhekeka. Iindidi eziphambili zokucutheka ziquka:
I-Plastiki ye-shrinkage: Xa izinto ezisekelwe kwi-samente zingakaqini, umthamo uyancipha ngenxa yokuphuma kwamanzi ngokukhawuleza.
I-Dry shrinkage: Emva kokuba i-material iqina, ibonakaliswe emoyeni ixesha elide, kwaye amanzi aphuphuma kancinci, okukhokelela ekunciphiseni umthamo.
Ukuncipha kobushushu: Ukutshintsha komthamo obangelwa kukutshintsha kobushushu, ngakumbi kwindawo enomahluko omkhulu wobushushu phakathi kwemini nobusuku.
I-Autogenous shrinkage: Ngethuba lenkqubo ye-cement hydration, umthamo wangaphakathi uyancipha ngenxa yokusetyenziswa kwamanzi ngokuphendula kwe-hydration.
Ezi ngqungquthela zihlala zikhokelela ekuqokeleleni uxinzelelo ngaphakathi kwezinto eziphathekayo, ekugqibeleni kubangele i-microcracks okanye i-cracks, echaphazela ukuqina kunye ne-aesthetics yesakhiwo sokwakha. Ukuze ugweme le nto, izongezo zidla ngokufuneka ukuphucula ukusebenza kwezinto, kwaye i-HPMC yenye yazo.
2. Indlela yokusebenza ye-HPMC
I-HPMC idlala indima ebalulekileyo ekunciphiseni ukushwabana nokuqhekeka kwezinto zokwakha, ephunyezwa ikakhulu ngezi ndlela zilandelayo:
Ukugcinwa kwamanzi: I-HPMC inomthamo oqinileyo wokugcina amanzi kwaye inokwenza ifilimu yokugcina amanzi kwidaka okanye iputty powder ukucothisa izinga lokuphuma kwamanzi. Ekubeni ukuguquka kwamanzi ngokukhawuleza ngaphakathi kwezinto kuya kubangela ukuncipha kweplastiki, umphumo wokugcina amanzi we-HPMC unokunciphisa ngokufanelekileyo i-shrinkage phenomenon yokuqala, ugcine amanzi kwizinto ezaneleyo, ngaloo ndlela ukhuthaza ukuphendula okupheleleyo kwe-hydration yesamente kunye nokunciphisa ukuqhekeka kwe-shrinkage. ukulahleka kwamanzi ngexesha lokumisa. Ukongeza, i-HPMC inokuphucula ukusebenza kwezinto phantsi kweemeko ezimanzi nezomileyo kunye nokunciphisa ukuqhekeka okubangelwa ukulahleka kwamanzi.
Ukuqina nokomeleza isiphumo: I-HPMC sisityebi esinokwandisa ngokufanelekileyo ukuhambelana kunye ne-viscosity yodaka kunye nokuphucula ukunamathela ngokubanzi kwezinto. Ngexesha lenkqubo yokwakha, ukuba izinto eziphathekayo zincinci kakhulu, kulula ukuchithwa okanye ukugoba, okubangelwa ukungalingani komhlaba okanye ukuqhekeka. Ngokusebenzisa i-HPMC, udaka lunokugcina i-viscosity efanelekileyo, ukwandisa amandla kunye nokuxinana komphezulu wezinto emva kokwakhiwa, kunye nokunciphisa amathuba okuqhekeka. Ukongeza, i-HPMC inokuphucula ukuxhathisa kwe-chear kwesixhobo kunye nokuphucula ukuxhathisa kwayo kokuqhekeka.
Ukuphucula ukuguquguquka kwezinto: Iimolekyuli ze-HPMC zinokudlala indima ethile ekuphuculeni ukuguquguquka kwezinto ezisekelwe kwisamente okanye izinto ezisekelwe kwi-gypsum, ukwenzela ukuba izinto zibe ne-tensile engcono kunye nokugoba ukugoba emva kokunyanga. Ekubeni izinto zokwakha zihlala ziphantsi koxinzelelo okanye ukugoba phantsi kokutshintsha kobushushu kunye nemithwalo, emva kokongeza i-HPMC, ukuguquguquka kwezinto ezibonakalayo kuyanda, okunokuthi kufake ngcono uxinzelelo lwangaphandle kwaye kuphephe ukuqhekeka kwe-brittle.
Lawula umlinganiselo we-cement hydration reaction: Kwizinto ezisekelwe kwi-samente, isantya sesantya sokuphendula i-hydration sichaphazela ngokuthe ngqo ukusebenza kwezinto. Ukuba impendulo ye-hydration ikhawuleza kakhulu, uxinzelelo ngaphakathi kwezinto alukwazi ukukhutshwa ngexesha, okubangelwa ukuqhekeka. I-HPMC inokunciphisa ngokufanelekileyo isantya sokuphendula kwe-hydration ngokusebenzisa ukugcinwa kwamanzi kunye nokubunjwa kwefilimu ekhuselayo, ukukhusela i-samente ekulahlekelweni kwamanzi ngokukhawuleza kwinqanaba lokuqala, kwaye ngaloo ndlela ugweme into yokunciphisa ngokukhawuleza kunye nokuqhekeka ngexesha lenkqubo yokuqina kwezinto.
Ukuphucula ukusebenza kolwakhiwo: I-HPMC inokuphucula ukusebenza kolwakhiwo lwezixhobo zokwakha, ikakhulu ibonakaliswe kwi-fluidity yayo elungileyo, ukugcinwa kwamanzi kunye nokuthambisa, ukwandisa ukufana kwezinto, kunye nokunciphisa iintanda ezibangelwa kukwakhiwa okungafanelekanga. Inokwenza i-mortar, i-putty powder, njl njl. lula ukusabalalisa kunye nenqanaba ngexesha lokwakha, ukunciphisa umlinganiselo we-void wezinto eziphathekayo, ukuphucula ukuxinwa ngokubanzi kunye namandla ezinto eziphathekayo, kunye nokunciphisa umngcipheko wokuqhekeka kwendawo okubangelwa ukwakhiwa kokungalingani.
3. Ukusetyenziswa kwe-HPMC kwizinto ezithile zokwakha
I-adhesive ye-tile: I-HPMC inokuphucula kakhulu ukusebenza kwe-anti-slip ye-adhesive tile, iqinisekisa ukuba iileyile zinokudibaniswa ngokulinganayo kwi-substrate ngexesha lofakelo, kwaye unciphise ukuchithwa okanye ukuqhekeka okubangelwa uxinzelelo olungalinganiyo okanye ukuncipha. Ukongeza, iziphumo ezityebileyo kunye nokugcinwa kwamanzi kwe-HPMC zenza ukuba i-tile yokunamathela igcine ixesha elide elivulekileyo emva kokwakhiwa, ukuphucula ukusebenza kakuhle kolwakhiwo, kunye nokunciphisa iintanda ezibangelwa kukunganyangeki.
I-Putty powder: Kwi-putty powder, ipropati yokugcina amanzi ye-HPMC inokuthintela i-putty ekulahlekelweni kwamanzi ngokukhawuleza ngexesha lenkqubo yokomisa, kunye nokunciphisa i-shrinkage kunye nokuqhekeka okubangelwa ukulahlekelwa kwamanzi. Kwangaxeshanye, isiphumo ukutyeba HPMC kunokuphucula ukusebenza ukwakhiwa putty, ukwenza kube lula ukusebenzisa ngokulinganayo eludongeni, kunye nokunciphisa iintanda kumphezulu ezibangelwa isicelo engalinganiyo.
Umdaka: Ukongeza i-HPMC kwidaka kunokuphucula ngokufanelekileyo ukusebenza kwayo, ukwenza udaka lube lula ngexesha lokwakha, ukunciphisa ulwahlulo kunye ne-stratification, kwaye ngaloo ndlela kuphuculwe ukufana kunye nokunamathela kodaka. Kwangaxeshanye, isiphumo sokugcina amanzi se-HPMC sinokwenza amanzi aphuke kancinci kancinci ngexesha lenkqubo yokuqina yodaka, ukuthintela ukuncipha kunye nokuqhekeka okubangelwa kukulahleka kwamanzi kwangoko.
4. Imiqathango yokusetyenziswa kwe-HPMC
Ulawulo lwedosi: Isixa se-HPMC esongeziweyo sinefuthe elithe ngqo kwisiphumo salo, kwaye ngokuqhelekileyo kufuneka sihlengahlengiswe ngokomlinganiselo wezinto eziphathekayo kunye neemeko ezithile zesicelo. I-HPMC egqithisileyo iya kubangela ukuba izinto eziphathekayo zibe nokuhambelana okuphezulu, okuchaphazela ukusebenza kolwakhiwo; ngelixa i-HPMC engonelanga ayinakukwazi ukudlala indima yogcino lwamanzi kunye nokujiya njengoko kufanele.
Ukusetyenziswa kunye nezinye izongezo: I-HPMC idla ngokusetyenziswa ngokudibeneyo kunye nezinye izongezo zekhemikhali (ezifana nezinciphisi zamanzi, ii-agent zokungenisa umoya, iiplastiki, njl.njl.) ukufumana iziphumo ezingcono. Xa usebenzisa, kuyimfuneko ukuqwalasela intsebenziswano yezongezo ezahlukeneyo ukuphepha impembelelo efanayo ekusebenzeni kwezixhobo.
Njengesongezo esibalulekileyo sokwakha, i-HPMC inempembelelo ebalulekileyo ekunciphiseni ukucutheka kunye nokuqhekeka kwezinto zokwakha. Inciphisa ngokufanelekileyo iintanda ezibangelwa ukulahlekelwa kwamanzi kunye nokugxininiswa koxinzelelo ngokuphucula ukugcinwa kwamanzi, ukuqina, ukuguquguquka kwezinto kunye nokuphucula izinga lokuphendula i-sement hydration. Ukusetyenziswa okunengqiqo kwe-HPMC akunakuphucula kuphela ukusebenza kokwakhiwa kwezinto, kodwa nokwandisa ubomi benkonzo yesakhiwo sokwakha kunye nokunciphisa iindleko zokugcinwa kamva. Ngokuqhubela phambili okuqhubekayo kobuchwepheshe bezinto zokwakha, ukusetyenziswa kwe-HPMC kwintsimi yokwakha kuya kuba banzi kwaye kunzulu.
Ixesha lokuposa: Sep-21-2024