Site na mmepe na ntinye nke agba latex na-adabere na mmiri, nhọrọ nke agba agba latex dị iche iche. Ndozi nke rheology na viscosity akara nke latex agba si elu, ọkara na obere shiee ọnụego. Nhọrọ na ntinye nke ihe ndina maka agba latex na agba latex na usoro emulsion dị iche iche (acrylic dị ọcha, styrene-acrylic, wdg).
Isi ọrụ nke thickeners na latex paints, nke rheology bụ otu n'ime ihe ndị dị mkpa nke mejupụtara ọdịdị na arụmọrụ nke ihe nkiri agba. Tụleekwa mmetụta nke viscosity na mmiri ozuzo pigmenti, brushability, larịị, njupụta nke ihe nkiri agba, na sag nke ihe nkiri dị n'elu n'oge ịsa ahịhịa. Ndị a bụ okwu ịdị mma nke ndị nrụpụta na-eburu n'uche.
Ihe mejupụtara nke mkpuchi ahụ na-emetụta rheology nke agba latex, na viscosity nwere ike gbanwee site n'ịgbanwe ntinye nke emulsion na ntinye nke ihe ndị ọzọ siri ike gbasasịrị na agba latex. Otú ọ dị, mgbanwe mgbanwe dị oke na ọnụ ahịa dị elu. A na-edozi viscosity nke agba latex site na ndị na-agba agba. Ọtụtụ eji thickeners bụ: cellulose ether thickeners, alkali-swellable polyacrylic acid emulsion thickeners, na-abụghị ionic associative polyurethane thickeners, wdg Hydroxyethyl cellulose ether thickener tumadi enwekwu na ọkara na ala shiee viscosity nke latex agba, na nwere nnukwu thixotropy. Ọnụ ahịa mkpụrụ dị ukwuu. A na-ejikọta eriri hydrophobic bụ isi nke cellulose thickener na mmiri mmiri gbara ya gburugburu site na njikọ hydrogen, nke na-eme ka ụda mmiri nke polymer n'onwe ya dịkwuo elu. A na-ebelata ohere maka mmegharị ahụ n'efu. A na-abawanye viscosity nke usoro ahụ, a na-emepụtakwa usoro netwọk jikọtara n'etiti pigmenti na ihe emulsion. Iji kewaa pigmenti n'etiti ibe ha, ihe emulsion adịkarịghị adsorb.
Oge nzipu: Nov-02-2022