1. Overview uye zvivakwa HPMC
Hydroxypropyl Methylcellulose (HPMC)isiri-ionic cellulose ether. Iyo ine maitiro ekunyungudika kwemvura, kukora, kuchengetedza mvura, firimu-kuumba, dispersibility uye kugadzikana nekuunza hydroxypropyl uye methyl inoshanda mapoka mu cellulose molecular chimiro. HPMC inoshandiswa zvakanyanya musimende-based zvivakwa zvekuvaka zvakaita sedhaka rekuvaka, putty powder, self-leveling simende uye mataira anonamira. Muzvirongwa zvekuvaka zvemazuva ano, kuitira kuvandudza kushanda kwesamende dhaka, HPMC, sechinhu chinokosha chekuwedzera, inogona kuvandudza zvakanyanya kushanda kwekushanda uye kusimba kwezvinhu zvesimende.
2. Basa reHPMC mune simende-based building materials mortar
Kukora uye kusimbisa mhedzisiro
Seyakakora uye bhainda, HPMC inogona kuvandudza kuenderana, kusimba kwekubatanidza uye kushanda kwedhaka panguva yekuvaka. Kuburikidza nekudyidzana nesamende nejecha, HPMC inoumba yakagadzikana matatu-dimensional network dhizaini, iyo inopa dhaka simba rakasimba rakabatana, zvichiita kuti zviome kudonhedza uye kubuda ropa panguva yekuvaka, uku ichigadzira yakaomeswa yakavhara pamusoro kuti ive nechokwadi chekusimba uye kusimba.
Kuvandudza kushanda kwekuchengetedza mvura
Kuchengetwa kwemvura ndechimwe chezvinhu zvakakosha mudhaka-samende, iyo inokanganisa zvakananga kufambira mberi kwesamende hydration reaction. HPMC inogona kuvandudza zvakanyanya simba rekuchengetedza mvura yedhaka. Nzira yaro yekuchengetedza mvura ndeyekudzikisa kushanduka kwemvura nekugadzira firimu remvura yakakwirira-viscosity, kuitira kuti mvura igoverwe zvakaenzana mumatope kudzivirira kurasikirwa kwemvura nokukurumidza. Nenzira iyi, munzvimbo yakaoma kana yakakwirira-yekushisa, HPMC inogona kunyatso kudzivirira dhaka kubva pakuputika nekuvandudza kunaka kwekuvaka uye hupenyu hwebasa redhaka.
Kuvandudza kuvaka uye anti-sagging performance
Cement dhaka rinowanzo donha panguva yekuvaka, zvichikanganisa kunaka uye kugona kweprojekiti. Kuwedzerwa kweHPMC kunogona kupa dhaka rakanakisa anti-sagging kuita, kunatsiridza thixotropy yedhaka, uye kuita kuti zviome kutsvedza panguva yekuvaka facade. Panguva imwecheteyo, HPMC inogonawo kuita kuti dhaka rive nekushanda kwakanaka uye lubricity, kuwedzera kutsvedzerera kwekuvaka, kuderedza kuoma kwekuvaka, uye kugadzirisa kushanda kwekuvaka.
Wedzera shrinkage uye kuputika kusagadzikana kwedhaka
Cement-based mortar inowanzoita kutsemuka kwakatsemuka panguva yekuomeswa, zvichikonzera kuderera kwekusimba. HPMC inonyatso kudzikisa njodzi yekupwanya kwe shrinkage nekuvandudza kubatana uye elasticity yedhaka. Uye zvakare, HPMC inogona kurebesa iyo hydration yekuita nguva mudhaka, kuita simende hydration kuti ikwane, nekudaro ichidzikisa kuderera kwedhaka nekuvandudza kutsemuka kwedhaka.
3. Nzvimbo dzekushandisa dzeHPMC
Ordinary plaster mortar
Mune yakajairwa plaster dhaka, HPMC inogona kuvandudza mashandiro ekubatanidza uye kuchengetwa kwemvura kwedhaka, kuve nechokwadi chekuti nzvimbo yekuvaka yakafanana uye yakatsetseka, uye kuderedza kuitika kwekutsemuka. Iyo thixotropy yeHPMC inogona kuwedzera kushanduka kwekushanda panguva yekupurasita, kuitira kuti dhaka rikurumidze kuporeswa uye kuumbwa mushure mekushandisa, uye kuchengetedza chimiro chakanaka chepamusoro.
Tile adhesives
HPMCinoshandiswa zvakanyanya mumatairi ekunamatira, uye simba rayo rakanaka rekubatanidza uye anti-slip properties zvinogona kutsigira zvinobudirira kuiswa kwematiles. Panguva imwecheteyo, HPMC inogona kuwedzera ductility uye kuchengetwa kwemvura yekunamatira mataira, zvichiita kuti mhedzisiro yekuvaka ive yakasimba uye inogara. Kunyanya mukuvaka mataira makuru, HPMC inogona kubatsira vashandi vekuvaka kuti vagone kumira uye kugadzirisa.
Self-leveling sement mortar
Solf-leveling dhaka chinhu chinozvimisikidza, chinokurumidza kuumba zvinhu chinoshandiswa kuenzanisa pasi. HPMC inoita basa mukukora uye kuchengetedza mvura, zvichiita kuti iyo inodzika-leveling simende slurry igadzikane. HPMC inogona zvakare kukwidziridza kuyerera uye kupararira kwedhaka rekuzvimisa, nekudaro kudzivirira kuitika kwesedimentation.
Dry-mixed mortar uye putty powder
Mune yakaoma-yakasanganiswa dhaka uye putty poda, HPMC inovandudza flatness uye pamusoro pemhando yenzvimbo yekuvaka kuburikidza nekuchengetedza mvura uye kunamatira, nepo ichidzivirira kuomesa uye kuputika. Mune putty poda, HPMC haingoipa iyo yakatsetseka yekuvhara mhedzisiro, asi zvakare inovimbisa kuti iyo pamusoro mushure mekuvaka haisi nyore kutsemuka, kuvandudza kupedzisa kunaka uye hupenyu hwebasa.
4. Chengetedzo yekushandiswa kweHPMC mudhaka resimende-based kuvaka
Dosage control
Huwandu hweHPMC hwakawedzerwa hune mhedzisiro yakakosha pakuita kwedhaka. Kuwedzera kuwedzera kuchaita kuti dhaka riome zvakanyanya, kunetsa kushanda, uye kuburitsa kuchena kana kuderedzwa simba pamusoro mushure mekuoma. Naizvozvo, huwandu hweHPMC hunofanirwa kudzorwa zvakanyanya pakugadzira dhaka. Iyo inowanzokurudzirwa kuwedzera huwandu ndeye 0.1% -0.3% yehuremu hwesimende.
Kuenderana nemamwe masanganiswa
Mune simende-yakavakirwa zvinhu, HPMC inogona kudyidzana nezvimwe zvinowedzera senge zvinoderedza mvura, mhepo inopinza maajenti, uye anti-kupaza vamiririri. Iko kuenderana kweHPMC nezvimwe zvinosanganiswa zvinofanirwa kutariswa paunenge uchigadzira iyo fomula, uye iyo fomula inofanirwa kuvandudzwa kuburikidza nekuyedza kuti ive nechokwadi chekuita kwakanyanya.
Dispersion uye dissolution nzira
HPMC inofanirwa kuparadzirwa zvakaenzana kana ichishandiswa kudzivirira kuungana kunokanganisa kuita kwedhaka. HPMC inogona kazhinji kuwedzerwa panguva yekusanganisa nzira yekuinyungudutsa zvakaenzana mumvura, kuitira kuti ipe kutamba kwakazara kune basa rayo.
HPMC inoshandiswa zvakanyanya musimende-yakavakirwa semende yezvivakwa zvekuvaka, uye inoita basa risingadzokerike mukusimudzira kukora, kuchengetwa kwemvura uye anti-kutsemuka, nekuvandudza mashandiro ekuvaka. Nekuvandudza tekinoroji yezvivakwa zvekuvaka uye kuwedzera kuri kuda kwekuchengetedzwa kwezvakatipoteredza uye kuchengetedza simba, kushandiswa kweHPMC kuri kuwedzera nekuvandudza. Kuburikidza nekutonga kwesainzi kwenzira yekunyorera uye dosi yeHPMC, mhedzisiro yekuvaka uye kusimba kwesimende-yakavakirwa zvinhu zvinogona kuvandudzwa zvakanyanya, zvichisimudzira budiriro uye kufambira mberi kweindasitiri yekuvaka.
Nguva yekutumira: Nov-11-2024