I-HPMC (i-Hydroxypropyl Methylcellulose) sisongezo sekhemikhali esibalulekileyo esisetyenziswa ngokubanzi ekwakheni iimbumba. I-ether ye-cellulose engeyiyo i-ionic, eyona nto ifunyenwe ngokuguqulwa kweekhemikhali ze-cellulose yendalo.
1. Ukugcinwa kwamanzi
Umsebenzi ophambili we-HPMC kukuphucula ukugcinwa kwamanzi odaka. Oku kuthetha ukuba ngexesha lenkqubo yokuqina komdaka, amanzi akayi kulahleka ngokukhawuleza, kodwa aya kuvalwa kwi-mortar, ngaloo ndlela ukwandisa ixesha lokuphendula i-hydration ye-samente kunye nokuphucula amandla e-samente. Oku kubaluleke kakhulu kwiindawo ezomileyo, ezishushu, apho ukulahleka kwamanzi ngokukhawuleza kunokubangela ukuba udaka luqhekeke kwaye lulahlekelwe amandla. I-HPMC inokunciphisa i-evaporation yamanzi ngokwenza ifilimu eshinyeneyo, iqinisekisa ukuba i-samente ifakwe ngokupheleleyo kwaye iphucula ukusebenza ngokubanzi kodaka.
2. Ukuphucula ukwakheka
I-HPMC inokuphucula kakhulu ukusebenza kodaka. Inika udaka ukuthambisa okungcono, kuyenza igudiswe kwaye kube lula ukuyisasaza xa isetyenziswa, inciphisa umthambo wabasebenzi ngexesha lokwakha. Kwangaxeshanye, i-HPMC inokuphucula ukuxhathisa i-sag yodaka, oko kukuthi, udaka aluyi kutyibilika lula xa lusetyenziswa ezindongeni okanye kwezinye iindawo ezithe nkqo, eziyimfuneko ekuqinisekiseni umgangatho wokwakha.
3. Ukuncamathela
Kudaka, i-HPMC ikwadlala indima ekwandiseni ukubambelela. Inokuphucula amandla okudibanisa phakathi kodaka kunye nesiseko sezinto (ezifana nezitena, ilitye okanye ikhonkrithi), ngaloo ndlela kuncitshiswe ukuvela kweengxaki ezifana nokugoba kunye nokuwa. I-HPMC iqinisekisa ukuba i-mortar inokubambelela ngokuqinileyo kwizinto ezisisiseko emva kokwakhiwa ngokuphucula ukudibanisa kunye nokubambelela kodaka.
4. Ukuxhathisa i-crack
I-HPMC inokuphucula kakhulu ukuxhathisa kokuqhekeka kodaka. Ngethuba lenkqubo yokuqina komdaka, uxinzelelo lwe-shrinkage luya kwenzeka ngenxa yokusabela kwe-hydration ye-samente. Ngokukodwa xa ukulahleka kwamanzi kukhawuleza, olu xinzelelo lunokubangela ukuba udaka luqhekeke. I-HPMC icotha ukushwabana kwesamente ngokugcina umlinganiselo ofanelekileyo wokufuma, ngaloo ndlela inciphisa ukubakho kweentanda. Ukongezelela, iphucula ukuguquguquka kodaka, ukunciphisa ngakumbi umngcipheko wokuqhekeka.
5. Libazise ixesha lokuseta
I-HPMC inokulibazisa ixesha lokumisela udaka, oluluncedo kakhulu kwiimeko ezithile zokwakha ezikhethekileyo. Ngokomzekelo, kwimozulu eshushu okanye eyomileyo, udaka luseta ngokukhawuleza, nto leyo enokubangela ukuba kuthintelwe inkqubela yolwakhiwo okanye umgangatho wokwakha uwohloke. Ngokulungelelanisa ixesha lokumisela, i-HPMC inika abasebenzi bokwakha ixesha elingakumbi lohlengahlengiso kunye nokusebenza, ukuphucula ukuguquguquka kunye nokulawula ukwakhiwa.
6. Ukuphucula ukuxhathisa kwiqabaka
I-HPMC inokuphucula ukumelana neqabaka yodaka. Kwiindawo ezibandayo, udaka olungaqini ngokupheleleyo luya kuba ngumkhenkce xa luvezwe kumaqondo obushushu aphantsi, luchaphazela amandla kunye nokuqina kwalo. I-HPMC iphucula ukuxhathisa ukunyibilika komkhenkce ngokuphucula i-microstructure yodaka kunye nokunciphisa ukufuduka kunye nomkhenkce wokufuma kwangaphakathi.
7. Ukhuseleko lokusingqongileyo kunye nokhuseleko
I-HPMC yinto ehambelana nokusingqongileyo kwaye isongezo esikhuselekileyo. Ekubeni ikhutshwe kwi-cellulose yendalo kunye nokuguqulwa kweekhemikhali, ayinayo ityhefu, ayinabungozi kwaye ihambelana nokusingqongileyo. Oku kwenza i-HPMC ibe sisongezo esithandwa kakhulu kushishino lokwakha, ngakumbi kwiiprojekthi ezifuna ukuhlangabezana nemigangatho yokusingqongileyo.
8. Ukusetyenziswa kwiindidi ezahlukeneyo zodaka
Ngokweentlobo ezahlukeneyo zodaka (ezifana nodaka lwe-tile bonding, udaka lokutyabeka, i-self-leveling mortar, njl.), umthamo kunye neemfuno zokusebenza ze-HPMC ziya kwahluka. Ngokomzekelo, kwi-ceramic tile bonding mortars, i-HPMC isetyenziselwa kakhulu ukuqinisekisa ukuzinza kweetayile ze-ceramic ngokuphucula ukubambelela kunye nokuxhatshazwa kwe-slip; kwiifama zokuzilinganisa, i-HPMC isetyenziselwa ukuhlengahlengisa ubumanzi kunye nokugcinwa kwamanzi ukuqinisekisa ukuba udaka lunokuSasaza ngokulinganayo nangokulinganayo.
Ukusetyenziswa kweHPMC kudaka lolwakhiwo lunamacala amaninzi. Ayinakuphucula kuphela ukwakhiwa kodaka, kodwa ikwaphucula ukuqina kunye nokusetyenziswa kwesiphumo sodaka. Ngenxa yeempawu zayo ezizodwa kunye neekhemikhali, i-HPMC iye yaba yinto eyimfuneko nebalulekileyo kwizinto zokwakha zanamhlanje.
Ixesha lokuposa: Aug-22-2024