Cellulose ethers (HEC, HPMC, MC, wdg) na redispersible polymer powders (nke dabere na VAE, acrylates, wdg)bụ ihe mgbakwunye abụọ dị oke mkpa n'ime ngwa agha, ọkachasị ngwa ngwa mix mix. Ha nke ọ bụla nwere ọrụ pụrụ iche, na site na mmetụta synergistic dị nkọ, ha na-eme ka arụ ọrụ nke ngwa agha dịkwuo elu. A na-egosipụtakarị mmekọrịta ha na akụkụ ndị a:
Cellulose ethers na-enye gburugburu ebe dị mkpa (njigide mmiri na ịgbara):
Njide mmiri: Nke a bụ otu n'ime isi ọrụ nke cellulose ether. Ọ nwere ike ịmepụta ihe nkiri hydration n'etiti ihe mgbochi ngwa ngwa na mmiri, na-ebelata ọnụ ọgụgụ nke evaporation mmiri na mkpụrụ (dị ka brik porous na ngọngọ) na ikuku.
Mmetụta na ntụ ntụ polymer na-emegharị emegharị: Njide mmiri a magburu onwe ya na-emepụta ọnọdụ dị oke mkpa maka uzuzu polymer redispersible ka ọ rụọ ọrụ:
Na-enye oge na-emepụta ihe nkiri: a ga-agbaze ihe ndị na-emepụta ihe na-emepụta ihe na polymer powders na mmiri ma gbasaa n'ime emulsion. Ntụ ntụ polymer na-abanye n'ime ihe nkiri polymer na-aga n'ihu, na-agbanwe agbanwe ka mmiri na-eji nwayọọ nwayọọ na-ekpochapụ n'oge usoro ihicha ngwa agha. Cellulose ether na-ebelata mmiri evaporation, na-enye polymer powder particles oge zuru oke (oge oghe) ka ọ gbasaa ma kwaga n'ime oghere ngwa agha na oghere, n'ikpeazụ na-emepụta ihe nkiri polymer zuru oke. Ọ bụrụ na mmiri na-efunahụ dị ngwa ngwa, ntụ ntụ polymer agaghị emepụta ihe nkiri n'ụzọ zuru ezu ma ọ bụ ihe nkiri ahụ ga-akwụsị, na-ebelata mmetụta ya ike.
N'ịkwado hydration ciment: hydration ciment chọrọ mmiri.Ihe njide mmirinke cellulose ether hụ na mgbe polymer ntụ ntụ na-emepụta ihe nkiri ahụ, ciment na-enwetakwa mmiri zuru ezu maka mmiri mmiri zuru ezu, si otú ahụ na-emepụta ntọala dị mma maka mmalite na ike oge. Ike sitere na ciment hydration jikọtara ya na mgbanwe nke ihe nkiri polymer bụ ntọala maka ịrụ ọrụ ka mma.
Cellulose ether na-eme ka arụ ọrụ dịkwuo mma (ịba ụba na ikuku ikuku):
Thickening / Thixotropy: Cellulose ethers budata na-abawanye nkwụsi ike na thixotropy nke ngwa agha (oke mgbe ọ ka dị, na-arị elu mgbe a kpalitere / etinyere). Nke a na-eme ka ngwa agha na-eguzogide sag (na-adaba n'elu elu kwụ ọtọ), na-eme ka ọ dị mfe ịgbasa na ọkwa, na-eme ka ọ dị mma.
Mmetụta ikuku ikuku: Cellulose ether nwere ụfọdụ ikike ikuku ikuku, na-ewebata obere, edo na afụ siri ike.
Mmetụta na polymer ntụ ntụ:
Mgbasawanye emeziwanye: viscosity kwesịrị ekwesị na-enyere aka irighiri uzuzu uzuzu latex gbasasịa karịa na sistemụ ngwa agha n'oge agwakọta ma belata agglomeration.
Kachasị mma workability: Ezi ihe owuwu ihe na thixotropy na-eme ka ngwa agha nwere latex ntụ ntụ dị mfe ijikwa, na-ahụ na a na-etinye ya n'otu n'otu na mkpụrụ, nke dị mkpa maka ịmepụta mmetụta nke njikọ nke latex ntụ ntụ na interface.
Mmanya mmanu na mmechi nke ikuku ikuku: Afụ ikuku ewepụtara na-arụ ọrụ dị ka ihe na-agba bọọlụ, na-eme ka mmanu na arụ ọrụ nke ngwa agha. N'otu oge, microbubbles ndị a na-echekwa nrụgide n'ime ngwa agha siri ike, na-emeju mmetụta siri ike nke ntụ ntụ latex (ọ bụ ezie na ikuku ikuku dị ukwuu nwere ike ibelata ike, ya mere nguzozi dị mkpa).
Polima ntụ ntụ redispersible na-enye mgbanwe mgbanwe na nkwado (mmepụta ihe nkiri na njikọ):
Ịmepụta ihe nkiri polymer: Dị ka e kwuru na mbụ, n'oge usoro ihicha nke ngwa agha ahụ, ihe ndị na-emepụta ihe na-eme ka ọkpụkpụ latex na-agbakọta n'ime ihe nkiri netwọk polymer na-aga n'ihu.
Mmetụta na motar matrix:
Nkwakọba agbakwunyere: Ihe nkiri polymer na-ekpuchi ma na-ejikọta ngwaahịa hydration ciment, irighiri simenti na-enweghị mmiri, ihe na-ejuputa na ihe nchịkọta, na-eme ka ike njikọ (njikọ) dị n'etiti ihe ndị dị n'ime ngwa agha ahụ.
Mgbanwe mgbanwe na mgbape mgbape: Ihe nkiri polymer na-agbanwe agbanwe na ductile, na-enye ngwa agha siri ike ka ukwuu nrụrụ. Nke a na-eme ka ngwa agha ahụ nweta nke ọma ma kesaa nrụgide sitere na mgbanwe okpomọkụ, mgbanwe iru mmiri, ma ọ bụ ngbanwe ntakịrị nke mkpụrụ ahụ, na-ebelata nke ọma ihe ize ndụ nke mgbawa (nkwụsị mgbawa).
Mmelite mmetụta na-eguzogide ma na-eyi nguzogide: Ihe nkiri polymer na-agbanwe agbanwe nwere ike ịmịnye ike mmetụta ma melite nguzogide mmetụta ma na-eyi nguzogide nke ngwa agha.
Iwetu modul ngbanwe: na-eme ka ngwa agha ahụ dị nro ma nwee ike ime mgbanwe maka nrụrụ nke mkpụrụ.
Uzuzu latex na-eme ka njikọta ihu (mmelite ihu):
Na-agbakwunye ebe a na-arụ ọrụ nke cellulose ethers: Mmetụta njide mmiri nke cellulose ethers na-ebelatakwa nsogbu nke "ụkọ mmiri dị n'etiti" nke na-ebute oke mmiri site na mkpụrụ. Nke kachasị mkpa, ihe ndị na-emepụta ihe / emulsions polymer nwere ọchịchọ ịkwaga na ngwa ngwa-substrate interface na ngwa ngwa-ume eriri (ma ọ bụrụ na ọ bụla) interface.
Akpụ a siri ike interface oyi akwa: The polymer film kpụrụ na interface ike penetrates na arịlịka n'ime mkpụrụ si micropores (anụ ahụ bonding). N'otu oge ahụ, polymer n'onwe ya na-egosiputa nrapara dị mma (kemịkalụ / adsorption anụ ahụ) na ihe dị iche iche (ihe, brik, osisi, EPS / XPS mkpuchi mkpuchi, wdg). Nke a na-abawanye ike nkekọ ngwa agha (nrapagide) na ihe dị iche iche, ma na mbido na mgbe imikpuchara n'ime mmiri na nhịahụ na-agbaze (mmiri na-eguzogide na ihu igwe).
Mmekọrịta mmekọrịta nke nhazi pore na ogologo oge:
Mmetụta nke cellulose ether: Njide mmiri na-eme ka hydration ciment dịkwuo mma ma na-ebelata pores rụrụ arụ nke ụkọ mmiri kpatara; mmetụta ikuku ikuku na-ewebata obere pores nwere ike ịchịkwa.
Mmetụta nke ntụ ntụ polymer: Akpụkpọ anụ polymer na-egbochi ma ọ bụ na-ejikọta pores capillary, na-eme ka ọkpụkpụ pore dị ntakịrị na obere njikọ.
Mmetụta Mmekọrịta: Mmetụta jikọtara ọnụ nke ihe abụọ a na-eme ka ọkpụkpụ pore nke ngwa agha dịkwuo mma, na-ebelata mmịnye mmiri na ịba ụba nke enweghị ike ime ya. Ọ bụghị nanị na nke a na-akwalite ịdịte aka ngwa agha ahụ (nkwụsị na-ajụ oyi na nguzogide nrụrụ nnu), kamakwa ọ na-ebelata ohere nke efflorescence n'ihi mbelata mmịnye mmiri. A na-ejikọtakwa ihe owuwu pore a ka mma na ike dị elu.
Cellulose ether bụ ma "ntọala" na "nkwenye": ọ na-enye ebe nchekwa mmiri dị mkpa (na-eme ka hydration ciment na mmepụta ihe nkiri latex ntụ ntụ), na-eme ka arụ ọrụ dịkwuo mma (na-eme ka a na-etinye akwa ngwa ngwa), ma na-emetụta microstructure site na ntinye na ikuku.
Uzuzu latex na-agbanwe agbanwe bụ ma “ihe na-emewanyewanye” na “akwa”: ọ na-etolite ihe nkiri polymer n'okpuru ọnọdụ dị mma nke ether cellulose mepụtara, na-eme ka njikọ nke ngwa agha dịkwuo mma, ngbanwe, mgbape mgbape, ike nkekọ, na ịdịte aka.
Mmekọrịta isi: Ike njide mmiri nke cellulose ether bụ ihe dị mkpa maka ịmepụta ihe nkiri dị irè nke ntụ ntụ latex. Enweghị njigide mmiri zuru oke, ntụ ntụ latex enweghị ike ịrụ ọrụ nke ọma. N'aka nke ọzọ, njikọ na-agbanwe agbanwe nke ntụ ntụ latex na-eme ka mgbakasị ahụ, mgbawa, na nrapanye zuru oke nke ihe ndị sitere na ciment dị ọcha, na-eme ka ọ dị ogologo ndụ.
Mmetụta jikọtara ọnụ: Ha abụọ na-eme ka ibe ha dịkwuo mma n'ịkwalite nhazi nke pore, na-ebelata mmịpụta mmiri, na ịkwalite ogologo oge ogologo oge, na-ebute mmetụta synergistic. Ya mere, na ngwa agha ọgbara ọhụrụ (dị ka adhesives tile, ihe mkpuchi nke mpụga nke plasta/njikọ, ngwa agha na-edozi onwe ya, ngwa agha na-adịghị mmiri, na ngwa mma), a na-eji cellulose ethers na polymer powders redispersible eme ihe mgbe niile na abụọ. Site n'ịhazi nke ọma ụdị na usoro onunu ogwu nke ọ bụla, enwere ike ịmepụta ngwaahịa ngwa ngwa dị elu iji mezuo ihe achọrọ dị iche iche. Mmetụta mmekọrịta ha na-eme bụ isi ihe na-eme ka ngwa agha ọdịnala bụrụ ihe mgbagwoju anya nke polymer-gbanwetụrụ na-arụ ọrụ dị elu.
Oge nzipu: Ọgọst-06-2025