Mataira anonamira ndiwo akakosha ekugadzira mukuvaka, achipa adhesion inochengetedza mataira kune akasiyana substrates.Nekudaro, zvipingaidzo zvakaita sekuratidzwa kwemafuta uye kutonhora-thaw kutenderera kunogona kukanganisa kutendeseka kweaya anonamira, zvichikonzera kukundikana uye zvimiro zvemamiriro.Hydroxypropyl methylcellulose (HPMC) yakabuda sechinhu chinovimbisa chekuwedzera kuvandudza kupisa kwekupisa uye kugadzika-kugadzikana kwematairi anonamira.Ichi chinyorwa chinoongorora maitiro ari kuseri kwezviwedzeredzo izvi, kukanganisa kweHPMC pakuita kwekunamira, uye pfungwa dzinoshanda dzekuibatanidza mukugadzira.
Mataira anonamira anoita basa rakakosha mukuvaka kwemazuva ano seanonamira anosungira mataira kune substrates senge kongiri, huni kana plasterboard.Aya anonamatira anofanira kunge achikwanisa kumira zvakasiyana-siyana zvezvakatipoteredza, kusanganisira kuchinja kwekushisa uye kuratidzwa kwehunyoro, kuve nechokwadi chekugara kwenguva refu kwetairi pamusoro.Nekudaro, zvinonamira zvechinyakare zvinogona kunetsa kuchengetedza kuita kwavo pasi pekupisa kwakanyanya kana kudzokororwa kutonhora-kutenderera kutenderera, zvichitungamira mukutadza kwebhondi uye kuvharwa kwematairi.Kuti vagadzirise matambudziko aya, vaongorori nevagadziri vari kuongorora mashandisirwo ezvekuwedzera senge hydroxypropyl methylcellulose (HPMC) kusimudzira kupisa kwekudzivirira uye kugadzika-kugadzikana kwekugadzika kwemataira anonamatira.
Tile adhesive overview
Usati wanyura mune basa reHPMC, zvinodikanwa kuti unzwisise kuumbwa uye mabasa eadhesive tile.Aya mabhanhire anowanzo kuve nemusanganiswa wePortland simende, yakanaka aggregate, mapolymers uye zvinowedzera.Portland simende inoshanda seyekutanga binder, nepo mapolymers anowedzera kushanduka, kunamatira, uye kuramba mvura.Kuwedzerwa kwezvinowedzera zvinogona kushandura chaiwo zvivakwa senge nguva yekurapa, yakavhurika nguva uye rheology.Kuitwa kwematairi adhesives kunoongororwa zvichienderana nezvinhu zvakadai sesimba rezvisungo, simba rekuveura, kushanduka uye kuramba kushushikana kwezvakatipoteredza.
Tile Adhesive Performance Matambudziko
Kunyangwe kufambira mberi muhunyanzvi hwekunamatira, kuisirwa mataira kuchiri kutarisana nemamwe matambudziko anogona kukanganisa kusimba kwayo.Zvinhu zviviri zvakakosha kuratidzwa kwekupisa uye kutonhora-kunyorova kutenderera.Tembiricha yakakwira inomhanyisa kurapa kwekunamira, zvichikonzera kuoma nguva isati yakwana uye kuderedza simba rebhondi.Sezvineiwo, kuratidzwa kune tembiricha yechando uyezve kunyunguduka kunogona kuita kuti hunyoro hupinde uye huwedzere mukati meiyo inonamira layer, zvichiita kuti tile idebond uye kutsemuka.Matambudziko aya anoda kugadzirwa kwezvinonamira zvine kukwirira kupikisa kupisa uye kutonhora-kunyungudika kutenderera.
Basa reHPMC mukusimudzira adhesive zvivakwa
HPMC inotorwa kubva kune cellulose uye inofarira kune yayo yakawanda-inoshanda zvivakwa mune zvekuvaka.Kana yawedzerwa kumatairi anonamira, HPMC inoita seye rheology modifier, thickener, inochengeta mvura mumiririri, uye inonamira.Iyo molecular chimiro cheHPMC inoigonesa kuumba hydrogen zvisungo nemamorekuru emvura, ichigadzira viscous gel inosimudzira processability uye inowedzera yakavhurika nguva.Pamusoro pezvo, HPMC inonatsiridza kunamatira nekugadzira firimu rekudzivirira padenga receramic tile, kuderedza kunyura kwemvura, uye kuwedzera kupindirana pakati pekunamatira uye substrate.
Mechanism yekuvandudza kupisa kusagadzikana
Kuwedzerwa kweHPMC kumatairi anonamira kunonatsiridza kupisa kwavo kupisa kuburikidza nemaitiro akati wandei.Chekutanga, HPMC inoshanda sechidziviriro chekupisa, ichidzikisa kupisa kwekufambisa kuburikidza neadhesive layer uye kuderedza kushanduka kwekushisa.Chechipiri, HPMC inosimudzira hydration process ye simenti particles uye inosimudzira kuumbwa kwe hydrated calcium silicate (CSH) gel, nekudaro inovandudza ma mechanic properties yeadhesive pakupisa kwakanyanya.Pamusoro pezvo, HPMC inoderedza njodzi yekupwanya kwekupisa nekudzikisa shrinkage uye kushushikana kwemukati mukati meiyo inonamatira matrix.
Matanho ari kuseri kwekuvandudzwa kwechando-thaw kugadzikana
HPMC inoita basa rakakosha mukuvandudza kugadzika kwechando-kunyorova kweanonamira mataira nekudzikamisa mhedzisiro yehunyoro ingress uye kuwedzera.Pasi pemamiriro echando, HPMC inoumba chipingamupinyi chinodzivirira chinodzivisa kupinda kwemvura muchikamu chekunamatira.Pamusoro pezvo, iyo hydrophilic chimiro cheHPMC inogonesa kuchengetedza hunyoro mune inonamira matrix.ix, kudzivirira desiccation uye chengetedza kushanduka panguva yechando-thaw cycles.Pamusoro pezvo, HPMC inoita seyaimbova pore, ichigadzira network ye micropores inogonesa kuwedzera kwemvura pasina kuita kuti tile iderere kana kutsemuka.
Mhedzisiro yeHPMC pane adhesive zvivakwa
Kuwedzerwa kweHPMC kunokanganisa akasiyana siyana ematirai anonamira, anosanganisira viscosity, kushanda, simba rebhondi uye kusimba.Kukwirisa kwakanyanya kweHPMC kunowanzo konzera kuwedzera viscosity uye kunatsiridza sag kuramba, zvichibvumira yakatwasuka uye pamusoro pekushandisa pasina kudonha.Nekudaro, yakawandisa HPMC yemukati inogona kukonzera kudzikiswa kwesimba rebhondi uye kureba panguva yekuzorora, saka magadzirirwo anofanirwa kunyatsokwenenzverwa.Pamusoro pezvo, kusarudzwa kwegiredhi reHPMC uye huremu hwemamorekuru kunokanganisa kushanda kweanonamatira pasi pemamiriro akasiyana ezvakatipoteredza.
Mafungiro anoshanda ekubatanidza HPMC
Kana uchibatanidza HPMC mumatairi anonamira, akati wandei maitiro anofanirwa kutariswa kuti akwidzise mashandiro uye kuve nechokwadi chekuenderana nemagadzirirwo aripo.Kusarudzwa kwemagiredhi eHPMC kunofanirwa kufunga zvinhu zvakaita seviscosity, kuchengetwa kwemvura, uye kuenderana nezvimwe zvinowedzera.Kupararira kwakaringana kweHPMC zvimedu kwakakosha kuti uwane kufanana uye kudzivirira agglomeration mune inonamira matrix.Pamusoro pezvo, mamiriro ekurapa, kugadzirira substrate, uye matekiniki ekushandisa anofanirwa kuchinjirwa kuti awedzere mabhenefiti uye kuderedza zvingangove zvakashata zveHPMC.
Hydroxypropyl methylcellulose (HPMC) ine mukana mukuru wekusimudzira kupisa kwekupisa uye kugadzika-kunyorova kwematairi anonamira ematairi.HPMC's multifunctional properties se rheology modifier, mvura inochengetedza mumiririri uye inonamira inovandudza anamira processability, adhesion uye kusimba mumamiriro ezvinhu akaomarara.Nekunzwisisa maitiro ari kuseri kwekuwedzera kwekushanda kweHPMC uye kugadzirisa zvinobatika pakubatanidzwa kwayo, vaongorori nevagadziri vanogona kugadzira akasimba, akavimbika mataira anonamira ayo anovimbisa kutendeseka kwenguva refu kwenzvimbo dzemataira mumhando dzakasiyana dzekuvaka.
Nguva yekutumira: Feb-28-2024