HPMC na Tile Adhesives

Tileadhesivesọtụtụ ndị mmadụ makwaara dị ka seramiikitile adhesives, ndị kpọtụrụ iji seramiiki tileadhesivesya mgbochi-efu drum, nnyapade, ewu, ịka nká iguzogide na ndị ọzọ uru na-ghọtara kpamkpam.

Cellulose etherHPMCdị ka ihe kacha mkpa mgbakwunye natile adhesives, tile adhesivesịdọrọ ike na oge mmeghe nwere mmetụta siri ike, ihe abụọ a bụkwa ihe dị mkpa na-egosi arụmọrụ dị elutile adhesives, site na nnwale nke cellulose ether mmetụta natile adhesivesAchịkọtara ma nyochaa akụrụngwa.

1, okwu mmalite

seramiiki dabeere na cimenttile adhesivesugbu a bụ ngwa kachasị ngwa ngwa ngwa ngwa agwakọta akọrọ pụrụ iche, nke bụ ụdị ciment dị ka isi ihe na-eme ka ciment na-agbakwunye ya site na gradation nke mkpokọta, onye na-ejide mmiri, onye na-ahụ maka ike mmalite, ntụ ntụ latex na ihe ndị ọzọ organic ma ọ bụ inorganic admixtures. Na-eji naanị na mmiri ịgwakọta, jiri ya tụnyere nkịtị ciment ngwa agha, nwere ike dị ukwuu mma bonding ike n'etiti finishing ihe na isi ihe, nwere ezi mgbochi ileghara na nwere magburu onwe mmiri na-eguzogide, okpomọkụ na-eguzogide na kefriza-thawing okirikiri uru, tumadi eji. n'ihi na pasting ụlọ ime na mpụta mgbidi taịl nile, ala tile na ndị ọzọ na-achọ mma ihe, A na-eji ọtụtụ ebe na mma nke mgbidi, ala, ime ụlọ ịwụ, kichin na ụlọ ndị ọzọ. Ọ bụ ihe jikọrọ taịlị seramiiki nke a na-ejikarị eme ihe.

Na-emekarị mgbe anyị na-ekpe ikpe arụmọrụ nke seramiikitile adhesives, na mgbakwunye na ịṅa ntị na arụmọrụ ya na-arụ ọrụ, ikike mgbochi nkwụsị, ma ṅaa ntị na ike ọrụ ya na oge mmeghe. Cellulose ether na seramiikitile adhesivesna mgbakwunye na-emetụta rheological Njirimara nke poselin gluu, dị ka ezigbo ọrụ arụmọrụ, stick mma ọnọdụ, kamakwa na n'ibu Njirimara nke seramiiki.tile adhesivesnwere mmetụta siri ike.

2, mmetụta nke oge mmeghe nke seramiikitile adhesives

Mgbe roba ntụ ntụ na cellulose ether na-adị na mmiri mmiri mmiri, ụfọdụ data ụdị na-egosi na roba ntụ ntụ nwere ike kinetic ike na-arapara n'ahụ simenti hydration ngwaahịa, na cellulose ether adị ọzọ na oghere mmiri mmiri, nke na-emetụta viscosity na ịtọ oge nke ngwa agha. Ọzọ. Esemokwu dị n'elu nke cellulose ether dị ukwuu karịa nke ntụ ntụ rọba, na ịba ụba nke ether cellulose ọzọ na ngwa ngwa ngwa bara uru maka ịmepụta njikọ nke hydrogen n'etiti ọdụ ụgbọ elu na cellulose ether.

Mmiri evaporation si na mmiri mmiri ngwa agha, ngwa agha, cellulose ether na elu imeju, 5 nkeji nwere ike na-etolite a akpụkpọ anụ n'elu nke ngwa agha, ga-ebelata evaporation ọnụego nke nsochi, na ọzọ mmiri si slurry oké akụkụ nke. ịkwaga na ngwa agha oyi akwa bụ thinner, na-emeghe isi obere etisasịwo mgbe mbụ e guzobere akpụkpọ ahụ, Mbugharị nke mmiri nwere ike iweta ọzọ enrichment nke cellulose ether na ngwa agha n'elu.

Ya mere, cellulose ether film e guzobere n'elu ngwa agha nwere mmetụta dị ukwuu na arụmọrụ nke ngwa agha, 1) ihe nkiri a na-emepụta dị oke mkpa, a ga-agbaze ugboro abụọ, na-enweghị ike igbochi evaporation nke mmiri, belata ike. 2) ihe nkiri a kpụrụ dị oke oke, ntinye nke cellulose ether na mmiri na-ekpochapụ slurry dị elu, na viscosity dị ukwuu. Mgbe a na-agbanye taịlị seramiiki, ọ dịghị mfe imebi ihe nkiri ahụ n'elu. Enwere ike ịhụ na ihe nkiri na-emepụta ihe nkiri cellulose ether nwere mmetụta dị ukwuu na oge mmeghe. Ụdị cellulose ether (HPMC, HEMC, MC, wdg) na ogo nke etherification (ogo nke nnọchi) na-emetụta kpọmkwem ihe nkiri na-emepụta ọrụ cellulose ether, na ike na ike nke ihe nkiri ahụ.

3, mmetụta nke ịbịaru ike

Cellulose ether ọ bụghị naanị na-enye ngwa agha ihe niile bara uru dị n'elu, kamakwa ọ na-egbu oge hydration kinetics nke ciment. Mmetụta a na-eweghachi azụ bụ n'ihi mgbasa nke cellulose ether molecules na usoro ịnweta dị iche iche na simenti na-agba mmiri, ma a na-ekwenyekarị na cellulose ether molecules na-etinyekarị na ngwaahịa hydration dị ka CSH na calcium hydroxide, na-adịkarịghị adsorbed. mbụ ịnweta adọ nke clinker. Na mgbakwunye, cellulose ether na-ebelata ion (Ca2+, SO42-, ...) n'ihi ụbara viscosity nke ngwọta pore. Arụmọrụ na ngwọta pore, nke na-akwụsịkwu usoro hydration.

Viscosity bụ ihe ọzọ dị mkpa dị mkpa, nke na-anọchite anya chemical Njirimara nke cellulose ether. Dịka e kwuru n'elu, viscosity na-emetụtakarị ikike ijide mmiri, ma nwee mmetụta dị ukwuu na arụ ọrụ nke ngwa agha ọhụrụ. Otú ọ dị, nchọpụta nnwale ahụ chọpụtara na viscosity nke cellulose ether fọrọ nke nta ka ọ ghara inwe mmetụta na hydration kinetics nke ciment. Ibu molekụla enwechaghị mmetụta na hydration, na nnukwu ọdịiche dị n'etiti ịdị arọ molekụla dị iche iche bụ naanị 10min. Ya mere, ịdị arọ molekụla abụghị isi ihe iji chịkwaa hydration ciment.

Nkwụghachi azụ nke cellulose ether na-adabere n'ụdị kemịkal ya. Ihe na-emekarị bụ na maka MHEC, ọkwa dị elu nke methylation dị elu, obere mmetụta nkwụsị nke cellulose ether. Na mgbakwunye, nnọchi hydrophilic (dị ka nnọchi nke HEC) nwere mmetụta azụ azụ siri ike karịa nnọchi hydrophobic (dịka nnọchi nke MH, MHEC na MHPC). Mmetụta azụ azụ nke cellulose ether na-emetụta tumadi site na akụkụ abụọ nke ụdị na ọnụ ọgụgụ nke ndị nọchiri anya.

Nnwale usoro ihe omume anyị chọpụtakwara na ọdịnaya nke ihe ngbanwe na-arụ ọrụ dị mkpa n'ike igwe nke nrapado seramiiki. Anyị tụlere arụmọrụ nke HPMC na ọkwa dị iche iche nke nnọchi na nrapado seramiiki, wee nwalee mmetụta nke cellulose ether nwere otu dị iche iche n'okpuru ọnọdụ ọgwụgwọ dị iche iche na akụrụngwa nke nrapado seramiiki.

The mgbanwe omume nke n'ibu ike n'okpuru ọnọdụ nke oghere oge na-agbanwe agbanwe na nkịtị okpomọkụ ọnọdụ, nke bụkwa na-agbanwe agbanwe na siri ike nke cellulose ether film anyị kwuru banyere ya na ngalaba 2. HPMC na elu methoxy (DS) ọdịnaya na ala hydroxypropoxy ( MS) ọdịnaya nwere ezigbo isi ike, mana ọ ga-emetụta wettability nke mmiri mmiri maka ihe dị n'elu.

4, nchịkọta

Cellulose ether, karịsịa methyl cellulose ether dị ka HEMC na HPMC, bụ ihe mgbakwunye dị mkpa na ntinye nke ọtụtụ ngwa ngwa ngwa ngwa. Ihe kachasị mkpa nke cellulose ether bụ njide mmiri ya na ihe ndị e ji ewu ụlọ. Ọ bụrụ na agbakwunyeghị cellulose ether, akwa akwa akwa nke ọhụrụ ga-akpọnwụ ngwa ngwa, nke mere na ciment enweghị ike ịme ka mmiri dị n'ụzọ nkịtị, na-eme ka ngwa agha ahụ sie ike ma ghara inweta ezigbo nrapado na isi. Enwere ọtụtụ ihe na-emetụta njide mmiri nke cellulose ether, dị ka usoro onunu ogwu na viscosity, na ihe mejupụtara ya: Nleba anya maka ịrụ ọrụ kacha mma nke ngwa agha nwere mmetụta dị ukwuu, ruo ogologo oge anyị na-arụ ụka na viscosity nke cellulose ether maka. ciment isi ihe nwere mmetụta dị ukwuu na oge coagulation na ihe ndị ọzọ, nnyocha e mere n'oge na-adịbeghị anya chọpụtara na mgbanwe nke viscosity nke ciment ntọala mmetụta oge dị nnọọ obere, ma ọ bụ kama ụdị nke otu na imekọ ihe ọnụ bụ ihe kasị mkpa na-akpata. na-emetụta ọrụ nke cellulose ether.

Ugbu a ka ịhụ arụmọrụ na ọrụ nke tile adhesives isi akụrụngwa:

1, simenti

Anyị niile maara na ciment bụ n'ezie nchebe gburugburu ebe obibi na-adịghị egbu egbu, ma nwee nguzogide siri ike nke ịka nká.

2, grading aja

Grading ájá bụ n'ezie ájá ájá mgbe a sachara mgbe ihicha, wee sieving a ụfọdụ size nke ọka size nke ájá, nke bụkwa na-adịghị egbu egbu na gburugburu ebe obibi nchebe, ya isi ọrụ bụ mejupụta, iji belata shrinkage nke tile adhesives solidification. .

N'elu bụ ụdị abụọ nke onye ọ bụla maara ihe, ihe mgbakwunye polymer nke ọha na eze amachaghị nke ọma n'okpuru ebe a, kedu ihe na njedebe bụ?

3, HPMC (hydroxypropyl methyl cellulose ether)

HPMC gbakwunyere na seramiiki tile adhesives n'ime isi ọrụ bụ ịnọgide na-mmiri, ndim, nzube bụ ka mma na seramiiki tile adhesives ikpeazụ solidification ike, ogologo oge oghere ma melite ihe owuwu, isi iyi ya bụ owu mgbe mgbanwe, ya bụ. sịnụ, ọ na-abịa site n'okike, ọ dịghị ihe na-emerụ ahụ mmadụ, zuru oke gburugburu ebe obibi nchebe ngwaahịa;

4, Redispersible polymer ntụ ntụ RDP

Isi ọrụ ya na seramiiki tile adhesives bụ imeziwanye ike njikọta, ọ gaghị enwe mmetụta ọ bụla na ihe owuwu ahụ, ya bụ, ụdị dị iche iche nke ceramic tile adhesives n'ime mgbakwunye Redispersible polymer powder RDP anyị enweghị ike ikpe ikpe mgbe ngwa ahụ. , naanị ihe nwere ike na-egosipụta bụ bonding ike nke seramiiki tile adhesives mgbe brik solidification, Nke a na-arụ ọrụ bụ n'ozuzu site seramiiki tile ịbịaru ngwá iji lelee ma ike izute mba ụkpụrụ, ka Redispersible polymer powder RDP bụghị gluu dịghị gluu Efrata, ọ bụ emulsion na nsọtụ nke ihicha ụlọ elu site na ịgba ihicha mgbe ẹkụre ntụ ntụ, nwekwara ike na-akọwa ya dị ka emulsion ntụ ntụ, naghachi mgbe ọ na-ezute mmiri ga-agbari ọzọ n'ime emulsion, Ya bụ, nrapado. nke ceramic tile adhesives na-enweta site na emulsion kama gluu, mgbe ahụ Redispersible polymer powder RDP bụkwa nke ngwaahịa nchebe gburugburu ebe obibi, n'ihi ya, ọ dịghị mkpa ichegbu onwe gị banyere seramiiki tile adhesives nwere gluu dị otú ahụ na-emerụ ihe;

5, eriri osisi

Isi ọrụ nke seramiiki tile adhesives bụ iguzogide mgbawa ma belata akpụkpọ ciment nke tileti seramiiki. O sikwa n'okike pụta. A na-agbaji ya na flocc site na arụ ọrụ nke osisi, na isi ya bụ osisi, ya mere ọ na-eme ka ọ bụrụ enyi na gburugburu ebe obibi.

6, starch ether

Ya isi ọrụ na seramiiki tile adhesives bụ mgbochi eruba, mgbochi-slip na synergistic HPMC ka mma ewu, ọ bụ ngwaahịa nke eke osisi starch gbanwetụrụ site etherification, kamakwa site na ọdịdị nke gburugburu ebe obibi nchebe ngwaahịa.

Enwere ike ịhụ n'elu ụdị ngwaọrụ 6 niile adịghị njọ, ihe nchebe gburugburu ebe obibi, ya mere seramiiki tile adhesives abụghị gluu. Na akụrụngwa nke na-abịa site na ngwaahịa, ga-eji mkpa osisi usoro, na-azọpụta oge na-azọpụta ohere ugbua otú. Mgbe nyocha sayensị nke ndị ọkachamara, yana ihe akaebe nke oge, ọ bara uru ịkwalite.