Admixtures na-ekere òkè dị mkpa n'ịkwalite ịrụ ọrụ nke ụlọ ngwa ngwa agwakọta akọrọ. Ndị na-esonụ na-enyocha ma na-atụnyere ihe ndị bụ isi nke latexr ntụ ntụ na cellulose, ma nyochaa arụmọrụ nke ngwa ngwa agwakọta akọrọ na-eji admixtures.
ntụ ntụ latex enwere ike agbasa
A na-ahazi ntụ ntụ latexr redispersible site na ihicha nke emulsion polymer pụrụ iche. The akpọnwụ latexr ntụ ntụ bụ ụfọdụ gburugburu gburugburu 80 ~ 100mm gbakọtara ọnụ. Ihe ndị a soluble na mmiri na-etolite a anụ dispersion ubé ibu karịa mbụ emulsion ahụ, nke na-etolite a film mgbe akpịrị ịkpọ nkụ na ihicha.
Usoro mgbanwe dị iche iche na-eme ka uzuzu latex redispersible nwere ihe dị iche iche dị ka mmiri na-eguzogide mmiri, nguzogide alkali, iguzogide ihu igwe na mgbanwe. Uzuzu latexr nke eji na ngwa agha nwere ike imeziwanye nguzogide mmetụta, ịdịte aka, iyi nguzogide, ịdị mfe nke ihe owuwu, ike njikọta na njikọta, nguzogide ihu igwe, nguzogide friza, mgbagha mmiri, ịgbado ike na ike mgbanwe nke ngwa agha ahụ.
Cellulose ether
Cellulose ether bụ okwu n'ozuzu maka usoro ngwaahịa na-emepụta site na mmeghachi omume nke cellulose alkali na etherifying n'okpuru ọnọdụ ụfọdụ. Alkali cellulose na-anọchi anya dị iche iche etherifying ọrụ iji nweta dị iche iche cellulose ether. Dị ka ionization Njirimara nke nnọchi, cellulose ethers nwere ike kewaa ụzọ abụọ: ionic (dị ka carboxymethyl cellulose) na-abụghị ionic (dị ka methyl cellulose). Dị ka ụdị nnọchi, ether cellulose nwere ike kewaa monoether (dị ka methyl cellulose) na ngwakọta ether (dị ka hydroxypropyl methyl cellulose). Dị ka dị iche iche solubility, ọ nwere ike kewara n'ime mmiri-soluble (dị ka hydroxyethyl cellulose) na organic mgbaze-soluble (dị ka ethyl cellulose), wdg Dry-agwakọta ngwa agha bụ tumadi mmiri-soluble cellulose, na mmiri-soluble cellulose bụ. kewara n'ime ụdị ngwa ngwa na elu ọgwụgwọ na-egbu oge ụdị mgbasa.
Usoro ọrụ nke cellulose ether na ngwa agha bụ ndị a:
(1) Mgbe ether cellulose dị na ngwa agha gbazere n'ime mmiri, a na-eme ka nkesa dị irè na nke dị n'otu nke cimentious ihe dị na usoro ahụ n'ihi ọrụ elu, na ether cellulose, dị ka colloid nchebe, "na-ekpuchi" ihe siri ike. A na-emepụta ihe na-eme ka ihe nkiri na-egbuke egbuke na-emepụta ihe nkiri na-egbuke egbuke n'elu elu ya, nke na-eme ka usoro ngwa agha dịkwuo mma, ma na-eme ka mmiri dị nro nke ngwa agha ahụ dịkwuo mma n'oge usoro ngwakọta na ire ụtọ nke ihe owuwu.
(2) N'ihi usoro ihe omimi nke ya, ihe ngwọta cellulose ether na-eme ka mmiri dị na ngwa ngwa ghara ịdị mfe, ma jiri nwayọọ nwayọọ hapụ ya ogologo oge, na-enye ngwa agha ahụ nke ọma na njide mmiri na ịrụ ọrụ.
eriri osisi
A na-eji osisi eme eriri osisi dị ka isi ihe eji eme ihe ma na-edozi ya site na usoro teknụzụ dị iche iche, ọrụ ya dị iche na nke cellulose ether. Ihe ndị bụ isi bụ:
(1) Na-adịghị ike n'ime mmiri na ihe mgbaze, nakwa na-adịghị ike na acid na-adịghị ike na ngwọta isi na-adịghị ike
(2) etinyere na ngwa agha, ọ ga-adaba n'ime usoro akụkụ atọ na steeti static, na-abawanye nguzogide thixotropy na sag nke ngwa agha, ma melite arụmọrụ.
(3) N'ihi nhazi akụkụ atọ nke eriri osisi, ọ nwere ihe onwunwe nke "mkpọchi mmiri" na ngwa ngwa agwakọta, na mmiri dị na ngwa ngwa agaghị adị mfe ma ọ bụ wepụ ya. Ma ọ nweghị nnukwu njigide mmiri nke cellulose ether.
(4) Mmetụta dị mma nke capillary nke eriri osisi nwere ọrụ nke "nduzi mmiri" na ngwa ngwa, nke na-eme ka elu na mmiri dị n'ime ya na-agbanwe agbanwe, si otú ahụ na-ebelata mgbawa nke na-enweghị nkwụsị na-adịghị mma.
(5) eriri osisi nwere ike ibelata nrụgide nrụrụ nke ngwa agha siri ike ma belata mbelata na mgbawa nke ngwa agha ahụ.
Oge nzipu: Mar-10-2023