HPMC muTile Adhesives

Tilezvinonamiravanhu vazhinji vanozivikanwawo seceramicmataira adhesives, avo vakabatana nekushandiswa kwekeramic tilezvinonamirakune yayo anti-isina chigubhu, inonamira, kuvaka, kuchembera kuramba uye zvimwe zvakanaka zvinonyatso zivikanwa.

Cellulose etherHPMCsechinhu chinonyanya kukosha chekuwedzera mumataira adhesives, mataira adhesiveskudhonza simba uye nguva yekuvhura ine simba rakasimba, uye zvinhu zviviri izvi zviratidzo zvakakosha zvekushanda kwepamusoromataira adhesives, kuburikidza nekuedza kwe cellulose ether effect pamataira adhesiveszvivakwa zvakapfupikiswa uye zvakaongororwa.

1, nhanganyaya

Cement-based ceramicmataira adhesivesParizvino ndiyo yakanyanya kushandiswa yeakakosha yakaoma kusanganisa dhaka, inova rudzi rwesimende sechinhu chikuru chekuisa simende uye inowedzerwa nekugadzika kweaggregate, mvura yekuchengetedza mvura, yekutanga simba mumiriri, latex poda uye zvimwe organic kana inorganic admixtures. Inowanzo shandiswa chete nekusanganiswa kwemvura, kana ichienzaniswa neyakajairika simende dhaka, inogona kuvandudza zvakanyanya simba rekubatanidza pakati pechinhu chekupedzisa uye chigadziko, ine yakanaka anti-kutsvedza uye ine yakanakisa kudzivirira kwemvura, kupisa kupisa uye kutonhora-kunyunguduka kutenderera kwakanakira, kunonyanya kushandiswa. yekunamira madziro emukati uye ekunze emadziro mataira, matanda epasi uye zvimwe zvekushongedza zvinhu, Inoshandiswa zvakanyanya mukushongedza kwemadziro, pasi, yekugezera, makicheni uye zvimwe zvivakwa. Ndiyo inonyanya kushandiswa ceramic tile bonding zvinhu.

Kazhinji kana isu tichitonga kuita kweceramicmataira adhesives, kunze kwekuteerera kushanda kwayo kwekushanda, anti-sliding kukwanisa, asiwo teerera kune simba rayo remagetsi uye nguva yekuvhura. Cellulose ether mu ceramicmataira adhesivesmukuwedzera kukanganisa rheological zvimiro zveporcelain glue, senge yakatsetseka mashandiro ekuita, tsvimbo yebanga mamiriro, asiwo pane mechaniki zvinhu zveceramic.mataira adhesivesine pesvedzero yakasimba.

2, pesvedzero yenguva yekuvhura yekeramicmataira adhesives

Kana rabha hupfu uye cellulose ether zviripo mudhaka rakanyorova, mamwe mamodheru edhata anoratidza kuti rabha hupfu ine simba rekinetic rakasimba rekuomerera kune simende hydration zvigadzirwa, uye cellulose ether inowanikwa zvakanyanya mugap fluid, iyo inokanganisa viscosity uye nguva yekumisa yedhaka. zvimwe. Kurwisana kwepamusoro kwe cellulose ether yakakura kudarika iyo yehupfu yerabha, uye kupfumiswa kweimwe cellulose ether pamatope interface kunobatsira pakuumbwa kwehydrogen bonds pakati pepasi plane uye cellulose ether.

Kubuda kwehunyoro kubva mudhaka rakanyorova, dhaka, cellulose ether mukupfumisa kwepamusoro, maminetsi mashanu anogona kugadzira membrane pamusoro pedhaka, inoderedza chiyero chekubuda kwekutevera, nemvura yakawanda kubva kune slurry gobvu chikamu chemvura. kufambisa kune dhaka layer itete, nzvimbo dzakavhurika dzakanyungudika zvishoma apo kuumbwa kwekutanga kwe membrane, kutama kwemvura kunogona kuunza kuwedzera kupfumisa kweselulosi ether mudhaka riri pamusoro.

Saka, selulosi ether firimu kuumbwa pamusoro pevhu kune simba guru pakuita kwedhaka, 1) firimu rinoumbwa rakanyanya kutetepa, richanyungudutswa kaviri, risingakwanisi kudzikamisa kubuda kwemvura, kuderedza simba. 2) firimu rakaumbwa rakanyanya kukora, kusanganiswa kwe cellulose ether mu slurry clearance liquid yakakwira, uye viscosity yakakura. Apo tile yekeramic yakanamatira, hazvisi nyore kuputsa firimu pamusoro. Zvinogona kuonekwa kuti firimu rinogadzira kushanda kwe cellulose ether ine simba guru panguva yekuvhura. Mhando ye cellulose ether (HPMC, HEMC, MC, etc.) uye dhigirii ye etherification (degree of substitution) inobata zvakananga firimu rinogadzira kushanda kwe cellulose ether, kune kuoma uye kuoma kwefirimu.

3, pesvedzero yekukwevera simba

Cellulose ether haingopei dhaka nezvose zviri pamusoro zvinobatsira, asiwo inonokesa iyo hydration kinetics ye simenti. Kudzoreredzwa uku kunonyanya kukonzerwa nekushambadza kwe cellulose ether mamorekuru pazvikamu zvakasiyana zvicherwa musimenti system iri hydrated, asi zvinotenderwa kuti cellulose ether mamorekuru anonyanya kushambadzirwa pane zvigadzirwa zve hydration seCSH uye calcium hydroxide, uye haawanzo kushambadzirwa pa. iyo yepakutanga mineral phase ye clinker. Mukuwedzera, cellulose ether inoderedza ions (Ca2+, SO42-, ...) nekuda kwekuwedzera viscosity ye pore solution. Chiitiko mu pore solution, iyo inowedzera kudzoreredza iyo hydration process.

Viscosity imwe inokosha parameter, iyo inomiririra makemikari e-cellulose ether. Sezvambotaurwa pamusoro apa, viscosity inonyanya kukanganisa simba rekuchengetedza mvura, uye inewo mhedzisiro yakakosha pakushanda kwedhaka nyowani. Zvisinei, chidzidzo chekuedza chakawana kuti viscosity ye cellulose ether yakanga isina simba pane hydration kinetics ye simenti. Huremu hwemamorekuru hune simba shoma pane hydration, uye mutsauko mukuru pakati pezviyereso zvakasiyana zvemamorekuru ndeye 10min chete. Naizvozvo, huremu hwemamorekuru haisi iyo yakakosha parameter yekudzora simende hydration.

Kunonoka kwe cellulose ether kunoenderana nechimiro chayo chemakemikari. Maitiro akajairika ndeokuti kune MHEC, iyo yakakwira dhigirii yemethylation, iyo idiki iyo inononoka mhedzisiro ye cellulose ether. Mukuwedzera, hydrophilic substitution (yakadai sekushandura HEC) ine simba rakasimba rekudzivisa kudarika hydrophobic substitution (yakadai sekushandura MH, MHEC uye MHPC). Iko kudzoreredza mhedzisiro ye cellulose ether inonyanya kukanganiswa nemaparamita maviri erudzi uye nhamba yemapoka akatsiviwa.

Yedu yakarongeka yekuyedza yakawanawo kuti zviri mukati mezvinotsiva zvinotora basa rakakosha musimba remakanika ye ceramic tile adhesive. Isu takaongorora mashandiro eHPMC neakasiyana madhigirii ekutsiva mune ceramic tile adhesive, uye takaedza pesvedzero ye cellulose ether ine mapoka akasiyana pasi pemamiriro akasiyana ekurapa pane mechanical ehupfumi ye ceramic tile adhesive.

Shanduko yesimba remagetsi pasi pemamiriro ekuvhura nguva inoenderana neyakajairwa tembiricha mamiriro, ayo anoenderanawo nekuoma kwe cellulose ether film yatakataura nezvayo muchikamu 2. HPMC ine yakakwira methoxy (DS) yemukati uye yakaderera hydroxypropoxy ( MS) zvemukati zvine kuoma kwakanaka, asi zvinokanganisa kunyorova kwedhaka rakanyorova rezvinhu zvepasi.

4, pfupiso

Cellulose ether, kunyanya methyl cellulose ether yakadai seHEMC neHPMC, chinhu chinokosha chekuwedzera mukushandiswa kwezvigadzirwa zvakawanda zvedhaka rakaoma. Chinhu chinonyanya kukosha che cellulose ether ndiko kuchengetedza kwayo mvura mune zvicherwa zvekuvaka. Kana cellulose ether isingawedzerwi, iyo yakaonda yedhaka nyowani ichaoma nekukurumidza, kuitira kuti simiti irege kunyoroveswa nenzira yakajairika, zvichiita kuti dhaka rirege kuoma uye harigone kuwana kunamatira kwakanaka kune hwaro. Pane zvinhu zvakawanda zvinokanganisa kuchengetwa kwemvura ye cellulose ether, seyero uye viscosity, uye kuumbwa kwayo kwemukati: Kutsiva dhigirii rekupedzisira kuita kwedhaka rine simba rakakura, kwenguva yakareba takakakavadzana kuti viscosity ye cellulose ether ye. Cement base material ine simba guru panguva yekubatanidza uye zvichingodaro, ongororo ichangobva kuitika yakawana kuti shanduko yeviscosity yesimende yekumisikidza nguva idiki, asi pachinzvimbo chemhando dzeboka uye kushandira pamwe ndicho chinhu chakakosha kukanganisa basa re cellulose ether.

Zvino zvakateerana kuti uone kuita uye basa rematairi anonamira makuru mambishi:

1, simende

Isu tese tinoziva kuti simende ndeyechokwadi isiri-chepfu kuchengetedzwa kwezvakatipoteredza, uye ine yakasimba kuchembera kuramba.

2, jecha rekuyera

Grading jecha ichokwadi rwizi jecha mushure mekugeza mushure mekuoma, uyezve kusefa imwe saizi yezviyo saizi yejecha, iyo isiri-chepfu uye kuchengetedzwa kwezvakatipoteredza, basa rayo guru nderekuzadza, kuitira kuderedza shrinkage yeadhesives solidification. .

Pamusoro pane marudzi maviri emunhu wese anoziva nezvezvinhu, iyo polymer yekuwedzera iyo veruzhinji isingazive zvakadzama pazasi, chii chiri kumagumo?

3, HPMC (hydroxypropyl methyl cellulose ether)

HPMC yakawedzerwa kune matani e ceramic adhesives mukati mebasa guru nderekuchengetedza mvura, kukora, chinangwa ndechekuvandudza marata e ceramic adhesives ekupedzisira kusimba kwesimba, kurebesa nguva yekuvhura uye kugadzirisa kuvaka, kwainotangira ikotoni mushure mekugadziriswa, ndiko taura, zvinobva kune zvakasikwa, hazvina kukuvadza kumuviri wemunhu, mhedziso yekuchengetedzwa kwezvakatipoteredza zvigadzirwa;

4, Redispersible polymer poda RDP

Basa rayo guru mumatairi e ceramic adhesives nderekuvandudza simba rekubatanidza, hazvizove nemigumisiro pakuvaka, kureva kuti, marudzi akasiyana-siyana emararamiro ematairi anonamatira mukati mekuwedzera kweRedispersible polymer powder RDP isu hatigoni kutonga kana kushandiswa. , chinhu chega chinogona kuratidzira isimba rekubatanidza remataira edhaka rinonamira mushure mekusimba kwezvidhinha, Kuita uku kunowanzo kuburikidza neceramic tile yekudhirowa chiridzwa chekutarisa kana ichigona kuzadzisa zviyero zvenyika, kune Redispersible polymer poda RDP haisi glue hapana glue zvinosanganisa, ndiyo emulsion iri pamucheto weshongwe yekuomesa nenzira yekupfapfaidza kuomesa mushure mekupedzwa kwehupfu, inogonawo kuitsanangura semulsion powder, kupora kana ikasangana nemvura inonyungudika zvakare mu emulsion, ndiko kuti, kunamatira. yedu ceramic mataira adhesives inotorwa kubva emulsion pane guruu, uye ipapo Redispersible polymer upfu RDP zvakare ndewezvakatipoteredza kuchengetedza zvigadzirwa, saka hapana chikonzero chekunetseka nezve ceramic mataira anonamira ane guruu zvakadaro zvinokuvadza zvinhu;

5, fiber yehuni

Basa guru rematairi e ceramic adhesives nderokudzivisa kuputika uye kuderedza simenti yeganda re ceramic tile. Inobvawo kubva kune zvakasikwa. Yakaputsika kuti iite flocc nemagetsi chiito chehuni, uye hunhu hwayo huni, saka inoshamwaridzana nenharaunda.

6, starch ether

Basa rayo guru mu ceramic tile adhesives ndeye anti-kuyerera, anti-kutsvedza uye synergistic HPMC yekuvandudza kuvaka, icho chigadzirwa chechisikigo chirimwa starch yakagadziridzwa ne etherification, asiwo kubva kune hunhu hwezvigadzirwa zvekuchengetedza nharaunda.

Unogona kuona pamusoro pemhando nhanhatu dzemidziyo yese haina kukuvadza, inodzivirira nharaunda, saka ceramic mataira anonamira haisi glue. Uye chikamu chinobva muchigadzirwa, chinofanira kushandisa nzira yakaonda yetsvimbo, kuchengetedza nguva kuchengetedza nzvimbo yatove zvakadaro. Mushure mekutsvagisa kwesainzi kwenyanzvi, pamwe nehumbowo hwenguva, zvakakosha kusimudzirwa.