Kedu ihe bụ ntụ ntụ latex na-agbanwe agbanwe?

Nzọụkwụ mbụ n'ịmepụta polymer ntụ ntụ na-agbanwe agbanwe bụ ịmepụta mgbasa ozi polymer, nke a makwaara dị ka emulsion ma ọ bụ latex. N'ime usoro a, monomers mmiri-emulsified (nke emulsifiers ma ọ bụ macromolecular na-echebe colloid) na-emeghachi omume na ndị na-amalite ịmalite emulsion polymerization. Site na mmeghachi omume a, a na-ejikọta monomers na-emepụta mkpụrụ ndụ ogologo ogologo (macromolecules), ya bụ polymers. N'oge mmeghachi omume a, monomer emulsion ụmụ irighiri mmiri na-agbanwe n'ime ihe ndị "siri ike" polymer. Na ndị dị otú ahụ polymer emulsions, ndị stabilizers na urughuru na-ebupụta ga-egbochi latex si n'ụzọ ọ bụla coalescing na si otú destabilizing. A na-emepụta ngwakọta a maka ịsa mmiri site na ịgbakwunye ihe mgbakwunye dị iche iche, na mgbakwunye nke colloid na-echebe na ndị na-eme ihe na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-eme ka polymer mepụta ntụ ntụ na-enweghị ihe ọ bụla nke nwere ike ịgbasa na mmiri mgbe ihichachara.

A na-ekesa ntụ ntụ latex a na-emegharị emegharị n'ime ntụ ntụ ntụ ntụ akọrọ nke ọma. Mgbe agwakọtara ngwa agha ahụ na mmiri, a na-atụgharị polymer ntụ ntụ n'ime slurry agwakọta ọhụrụ ma megharịa ọzọ; n'ihi hydration nke ciment, evaporation elu na / ma ọ bụ absorption nke isi oyi akwa, n'ime pores bụ n'efu Na-aga n'ihu oriri nke mmiri na-eme ka akụkụ latex akọrọ na-emepụta ihe nkiri na-aga n'ihu nke mmiri na-adịghị na mmiri. Ihe nkiri a na-aga n'ihu na-etolite site na njikọ nke otu ihe ahụ gbasasịrị na emulsion n'ime ahụ. Iji mee ka uzuzu latex a na-emegharị emegharị ka ọ mepụta ihe nkiri n'ime ngwa ngwa siri ike, a ga-ahụrịrị na opekempe okpomọkụ na-emepụta ihe nkiri dị ala karịa okpomọkụ ọgwụgwọ nke ngwa ngwa a gbanwere.

Ụdị ahụ nke ihe na-emepụta ihe na-emepụta ihe na-emepụta ihe na-emepụta ihe nkiri na-eme ka ọ nwee ike inwe mmetụta ndị a na arụmọrụ nke ngwa agha na ọnọdụ ọhụrụ na nke siri ike:

1. Ọrụ na ngwa agha ọhụrụ

◆ "Mmetụta lubricating" nke ihe ndị ahụ na-eme ka ngwakọta ngwa agha nwee mmetụta dị mma nke ọma, ka e wee nweta arụmọrụ ụlọ ka mma.

◆ Mmetụta na-eme ka ikuku na-eme ka ngwa agha ahụ na-agbakọ, na-eme ka ọ dị mfe karị.

◆ Ịtinye ụdị uzuzu latex ntụ ntụ dị iche iche nwere ike nweta ngwa agha gbanwetụrụ na plastik ka mma ma ọ bụ viscous karịa.

2. Ọrụ na ngwa agha siri ike

◆ Ihe nkiri latex nwere ike imechi mgbape mgbawa na ebe ngwa ngwa ngwa wee gwọọ mgbawa nke mbelata.

◆ Melite ikike nke ngwa agha.

◆ Meziwanye ike cohesive nke ngwa agha: ọnụnọ nke mpaghara polymer na-agbanwe nke ukwuu na nke na-agbanwe agbanwe na-eme ka mgbanwe na mgbanwe nke ngwa agha dịkwuo mma,

Na-enye omume jikọrọ ọnụ na ike siri ike maka ọkpụkpụ siri ike. Mgbe a na-etinye ike, n'ihi mgbanwe mgbanwe na ngbanwe nke

Microcracks na-egbu oge ruo mgbe a ga-enweta nrụgide dị elu.

◆ Ngalaba polymer kpara akpa na-egbochikwa njikọta nke microcracks n'ime oghere mgbape. Ya mere, ntụ ntụ polymer na-agbanwe agbanwe na-eme ka nrụgide ọdịda na ọdịda ọdịda nke ihe ahụ dịkwuo mma.

Ọ dị mkpa ịgbakwunye uzuzu latex redispersible ka ọ bụrụ ụrọ ciment kpọrọ nkụ, n'ihi na uzuzu latex na-agbanwe agbanwe nwere uru isii ndị a, ihe na-esonụ bụ mmeghe maka gị.

1. Meziwanye ike njikọta na ịdị n'otu

Uzuzu latex na-agbanwe agbanwe na-arụ ọrụ dị ukwuu n'ịkwalite ike njikọta na njikọta nke ihe. N'ihi ntinye nke mkpụrụ ndụ polymer n'ime pores na capillaries nke cement matrix, a na-emepụta njikọ dị mma mgbe hydration na ciment gasịrị. Resin polymer n'onwe ya nwere ihe ndị mara mma. Ọ na-akawanye mma n'ịkwalite nchikota nke ngwa ngwa simenti na ihe ndị dị n'ime ala, karịsịa nkwenye na-adịghị mma nke ihe ndị na-emepụta ihe dị ka ciment na ihe ndị na-emepụta ihe dị ka osisi, eriri, PVC, na EPS.

2. Melite nkwụsi ike nke ifriizi-na-egbochi ma gbochie mgbawa nke ihe

Uzuzu latex na-agbanwe agbanwe, plasticity nke resin thermoplastic nwere ike imeri mmebi nke mgbasawanye ọkụ na mkpirisi nke simenti ngwa agha ihe kpatara ọdịiche okpomọkụ kpatara. Na-emeri njirimara nke nnukwu shrinkage akọrọ na nkwụsị dị mfe nke ciment ciment dị mfe, ọ nwere ike ime ka ihe ahụ na-agbanwe agbanwe, si otú ahụ na-eme ka nkwụsi ike dị ogologo oge nke ihe ahụ dịkwuo mma.

3. Meziwanye nkwụsị na nkwụsị nkwụsị

N'ime ọkpụkpụ siri ike nke a kpụrụ mgbe mmiri simenti gbachara mmiri, akpụkpọ anụ polymer na-agbanwe ma sie ike, ma na-arụ ọrụ dị ka nkwonkwo na-ebugharị n'etiti ihe ndị dị na ciment mortar, nke nwere ike iguzogide nnukwu nrụrụ ma belata nrụgide. Mmụba nkwụsi ike na mgbada.

4. Meziwanye nguzogide mmetụta

Uzuzu latex na-agbanwe agbanwe bụ resin thermoplastic. Ihe nkiri dị nro nke a na-ekpuchi n'elu akụkụ ngwa agha nwere ike ịmịnye mmetụta nke ike mpụga ma zuru ike na-enweghị imebi, si otú a na-eme ka mmetụta mgbochi nke ngwa agha dịkwuo mma.

5. Meziwanye hydrophobicity ma belata mmịpụta mmiri

Ịgbakwunye koko ntụ ntụ polymer redispersible nwere ike melite microstructure nke ciment ngwa agha. Polymer ya na-etolite netwọk a na-apụghị ịgbagha agbagha n'oge usoro hydration ciment, na-emechi capillary na ciment gel, na-egbochi ntinye nke mmiri, ma na-eme ka ọ dịkwuo mma.

6. Meziwanye ihe mgbochi na-eyi na ịdịte aka

Ịgbakwunye uzuzu latex na-emegharị emegharị nwere ike ime ka ọnụ ọgụgụ dị n'etiti cement mortar particles na ihe nkiri polymer. Nkwalite ike jikọrọ ọnụ n'otu aka ahụ na-eme ka ike nke ngwa agha nagide nrụgide siri ike, na-ebelata ọnụ ọgụgụ iyi, na-eme ka nkwụsị nke uwe ahụ dịkwuo mma, na-agbatị ndụ ọrụ nke ngwa agha ahụ.