Ihe na-eme ka agba latex sie ike ga-enwerịrị ezigbo ndakọrịta na ihe mejupụtara emulsion polymer, ma ọ bụghị ya, ihe mkpuchi ahụ ga-enwe obere reticulate, ọ ga-emepụta ngwakọta ihe na-adịghị agbanwe agbanwe, nke ga-ebelata viscosity ma mee ka nha ihe ahụ dị nro. Ihe na-eme ka ọ dị arọ ga-agbanwe ụgwọ nke emulsion. Dịka ọmụmaatụ, ihe na-eme ka ọ dị arọ ga-enwe mmetụta na-enweghị mgbagha na emulsifier anionic iji mebie emulsion. Ihe na-eme ka ọ dị arọ maka agba latex ga-enwerịrị ihe ndị a:
1. Obere dose na ezigbo viscosity
2. Ezigbo nkwụsi ike nchekwa, enweghị mbelata viscosity n'ihi ọrụ nke enzymes, na enweghị mbelata viscosity n'ihi mgbanwe na okpomọkụ na uru PH
3, ezigbo njigide mmiri, enweghị ihe afụ doro anya
4. Enweghị mmetụta ọjọọ na ihe ndị dị na fim dịka iguzogide scrub, gloss, ike zoro ezo na iguzogide mmiri
5. Enweghị ntụpọ agba
Usoro nke ime ka agba latex sie ike bụ ihe dị mkpa iji melite ịdị mma nke latex ma belata ọnụ ahịa ya. Hydroxyethyl cellulose bụ ihe na-eme ka agba latex sie ike nke ọma, nke nwere ọtụtụ ọrụ na nhazi nke agba latex siri ike, kwụsie ike na rheological.
N'ime usoro mmepụta nke agba latex,hydroxyethyl cellulose (HEC)A na-eji ya dị ka ihe na-agbasa ihe, ihe na-eme ka agba sie ike ma na-eme ka ọ kwụsie ike iji mee ka viscosity nke ngwaahịa ahụ sie ike, belata njikọta, mee ka ihe osise agba dị nro ma dị ire ụtọ, ma meekwa ka agba latex sie ike. Ezi rheology, nwere ike iguzogide ike ịkwa akwa dị elu, ma nwee ike inye ọkwa dị mma, iguzogide ọkọ na nha nha agba. N'otu oge ahụ, HEC nwere ezigbo ọrụ, agba latex nke ejiri HEC mee ka ọ sie ike nwere pseudoplasticity, yabụ usoro owuwu dị ka ịsacha, ịtụgharị, ijupụta, na ịgba mmiri nwere uru nke ịchekwa ọrụ, ọ dịghị mfe ihicha ma sag, yana obere ịgbasa. HEC nwere mmepe agba dị mma. O nwere ezigbo mgbanwe na ọtụtụ agba na ihe njikọta, na-eme ka o kwe omume ịmepụta agba latex nwere ezigbo nguzozi agba na nkwụsi ike. N'ihi na enwere ike itinye ya na nhazi ahụ, ọ bụ ether na-abụghị ionic. Ya mere, enwere ike iji ya na oke pH (2~12), enwere ike ịgwakọta ya na ihe mejupụtara agba latex izugbe dị ka pigments reactive, ihe mgbakwunye, nnu na-agbaze ma ọ bụ electrolytes.
Enweghị mmetụta ọjọọ ọ bụla na ihe mkpuchi ahụ. N'ihi na mmiri HEC nwere njirimara nrụgide doro anya n'elu mmiri, ọ naghị adị mfe ịfụ ụfụfụ n'oge mmepụta na owuwu, ọnọdụ nke oghere ugwu mgbawa na oghere dị n'ime ya adịghịkwa mma.
Nchekwa dị mma. N'oge nchekwa ogologo oge, enwere ike ịnọgide na-enwe ike ịgbasa na nkwụsịtụ nke agba ahụ, ọ dịghịkwa nsogbu nke agba na-ese n'elu mmiri na ifuru. Mgbe obere oyi akwa mmiri dị n'elu agba ahụ na okpomọkụ nchekwa ahụ na-agbanwe nke ukwuu. Ọdịdị ya ka kwụsiri ike.
HEC nwere ike ime ka ihe mejupụtara PVC (mkpụrụ agba) dịkwuo elu ruo 50-60%. Na mgbakwunye, ihe mkpuchi elu nke agba e ji mmiri mee nwekwara ike iji HEC.
Ugbu a, ihe ndị na-eme ka agba latex dị elu n'ime ụlọ bụ ihe ndị na-eme ka agba HEC na acrylic dị na ya (gụnyere polyacrylates, homopolymer ma ọ bụ copolymer emulsion thickeners nke acrylic acid na methacrylic acid) dị nkọ.
Enwere ike iji hydroxyethyl cellulose mee ihe maka
1. Dịka ihe na-ekesa ihe ma ọ bụ ihe na-echebe ihe
N'ozuzu, a na-eji HEC nwere viscosity nke 10 ruo 30 mPaS. Enwere ike iji HEC nke ruru 300mPa·S na njikọta ya na anionic ma ọ bụ cationic surfactants, mmetụta mgbasa ahụ ka mma. Ọnụọgụ ntụaka bụ 0.05% nke oke nke monomer.
2, dị ka ihe na-eme ka ihe sie ike
Jiri 15000mPa. Ọnụọgụ ntụaka nke HEC dị elu dị n'elu s bụ 0.5 ruo 1% nke mkpokọta oke nke mkpuchi latex, uru PVC nwekwara ike iru ihe dị ka 60%. Na agba latex, a na-eji HEC nke ihe dị ka 20Pa, yana ihe dị iche iche nke agba latex kacha mma. Ọnụ ego nke iji HEC karịa 30O00Pa.s dị ala. Agbanyeghị, nhazi na njirimara ndị ọzọ nke agba latex adịghị mma. Site n'echiche nke ihe achọrọ maka mma na mbelata ọnụ ahịa, ọ kacha mma iji HEC dị ọkara na elu ọnụ.
3. Usoro itinye agba latex n'ime agba
Enwere ike itinye HEC nke e ji ihe dị n'elu ya mee n'ụdị ntụ akọrọ ma ọ bụ slurry. A na-etinye ntụ akọrọ ozugbo na igwe e ji agba agba. pH nke ebe mgbakwunye kwesịrị ịbụ 7 ma ọ bụ karịa. Enwere ike itinye ihe alkaline dị ka ihe ndị na-ekesa ihe mgbe emechara ya.HECe tinyere mmiri ma gbasaa ya kpamkpam. A ga-agwakọta mmiri e ji HEC mee n'ime mmiri tupu HEC enwee oge zuru oke iji mee ka mmiri dị ọcha ma mee ka ọ dị arọ ruo mgbe ọ gaghị ekwe omume iji ya. Enwere ike iji ihe ndị na-eme ka coalescing dị na glycol kwadebe mmiri HEC.
4. Mgbochi e ji agba latex mee
Ọ bụrụ na e jiri mmiri mee ka ihe ndị dị ka cellulose na ihe ndị sitere na ya ghara ịgbaze, ọ ga-emebi emebi nke ukwuu. Ịtinye ihe nchekwa na agba naanị ezughi oke, ihe niile dị na ya agaghị enwe enzyme. A ga-edebe ihe ndị e ji agba latex mee ka ha dị ọcha ma dị ọcha, a ga-ejikwa mmiri 0.5% formalin ma ọ bụ 0.1% mercury solution hichaa akụrụngwa niile mgbe niile.
Oge ozi: Eprel-25-2024