A na-ejikarị starch ether eme ihe na ngwa agha, nke nwere ike imetụta nkwụsị nke ngwa agha dabere na gypsum, ciment na lime, ma gbanwee ihe owuwu na sag resistance nke ngwa agha.A na-ejikarị ethers starch eme ihe na njikọ cellulose ethers na-adịghị agbanwe agbanwe na emezigharị.Ọ dabara maka ma na-anọpụ iche na alkaline usoro, na dakọtara na ọtụtụ ihe mgbakwunye na gypsum na ciment ngwaahịa (dị ka surfactants, MC, starch na polyvinyl acetate na ndị ọzọ mmiri-soluble polymers).
Njirimara nke starch ether tumadi dị ka n'okpuru:
(1) Meziwanye nguzogide sag;
(2) melite constructability;
(3) Mmụba ngwa ngwa dị elu.
Gịnị bụ isi ọrụ nke starch ether na gypsum akọrọ ngwa agha dabeere?
Azịza: Starch ether bụ otu n'ime isi ihe mgbakwunye nke akọrọ ntụ ntụ ntụ.Ọ nwere ike dakọtara na mgbakwunye ndị ọzọ.A na-eji ya eme ihe n'ọtụtụ ebe na tile adhesives, nrụzi ngwa agha, plasta gypsum, ime na mputa mgbidi putty, gypsum dabeere caulking na ndochi ihe, interface agents, masonry Na ngwa agha, ọ dịkwa mma maka ngwa aka ma ọ bụ ịgbasa na ciment ma ọ bụ gypsum. -ngwa agha dabere.Ọ na-arụ ọrụ dị ka ndị a:
(1) A na-ejikarị starch ether eme ihe na methyl cellulose ether, nke na-egosi mmetụta synergistic dị mma n'etiti abụọ ahụ.Ịgbakwunye ether starch kwesịrị ekwesị na methyl cellulose ether nwere ike imeziwanye nkwụsị nke sag na nkwụsị nke ngwa agha, na-enwe uru dị elu.
(2) Ịtinye ihe kwesịrị ekwesị nke starch ether na ngwa agha nwere methyl cellulose ether nwere ike ime ka ngwa ngwa na-agbanwe agbanwe nke ukwuu, mee ka mmiri ahụ dịkwuo mma, ma mee ka ihe owuwu ahụ dị nro ma dị nro.
(3) Ịtinye ihe kwesịrị ekwesị nke starch ether na ngwa agha nwere methyl cellulose ether nwere ike ime ka njigide mmiri nke ngwa agha ahụ dịkwuo ogologo ma gbatịa oge oghere.
Kedu uru ngwa na ụzọ nchekwa nke starch ether?
Azịza: Enwere ike iji ya dị ka ihe mgbakwunye maka ngwaahịa simenti, ngwaahịa gypsum na ngwaahịa ash-calcium.
(1) Uru na ngwa:
a.Ọ na-enwe mmetụta na-akpụ akpụ na ngwa agha ahụ, nwere ike itolite ngwa ngwa, ma nwee ezigbo mmanu;
b.Usoro onunu ogwu dị obere, na usoro ọgwụgwọ dị oke ala nwere ike nweta mmetụta dị elu;
c.Melite ikike mgbochi mgbochi nke ngwa agha jikọtara;
d.ịgbatị oge oghere nke ihe;
e.Melite arụmọrụ arụ ọrụ nke ihe ma mee ka ọrụ ahụ dị nro.
(2) Nchekwa:
Ngwaahịa ahụ nwere ike iru mmiri ma a ga-echekwa ya n'ebe kpọrọ nkụ ma dị jụụ na nkwakọ ngwaahịa mbụ.Ọ kacha mma iji ya n'ime ọnwa iri na abụọ.(A na-atụ aro ka a na-ejikọta ya na cellulose ether viscosity dị elu, na mkpokọta cellulose ether na starch ether bụ 7: 3 ~ 8: 2).
Gịnị bụ ọrụ nke methyl cellulose ether na akọrọ ntụ ntụ ngwa agha?
A: Methyl hydroxyethyl cellulose ether (MHEC) na methyl hydroxypropyl cellulose ether (HPMC) na-akpọkọta ọnụ dị ka methyl cellulose ether.
N'ebe a na-eji ntụ ntụ ntụ akọrọ, methyl cellulose ether bụ ihe dị mkpa gbanwere maka ngwa ngwa ntụ ntụ dị ka plasta, gypsum plasta, tile adhesive, putty, self-leveling material, spray spray, wallpaper ndhesive and caulking material.N'ime ụrọ dị iche iche akọrọ akọrọ, methyl cellulose ether na-arụkarị ọrụ nke njide mmiri na ịgbatị.
Kedu ihe bụ usoro mmepụta nke cellulose ether?
Azịza: Nke mbụ, a na-egwepịa ihe ndị dị na cellulose, emesịa alkalized na pulpped n'okpuru omume nke caustic soda.Tinye olefin oxide (dị ka ethylene oxide ma ọ bụ propylene oxide) na methyl chloride maka etherification.N'ikpeazụ, a na-asachapụ mmiri na ịdị ọcha iji nweta ntụ ntụ ọcha.Nke a ntụ ntụ, karịsịa ya aqueous ngwọta, nwere mmasị anụ ahụ Njirimara.Eter cellulose eji na ụlọ ọrụ ihe owuwu bụ methyl hydroxyethyl cellulose ether ma ọ bụ methyl hydroxypropyl cellulose (nke a na-akpọ MHEC ma ọ bụ MHPC, ma ọ bụ aha dị mfe karị MC).Ngwaahịa a na-arụ ọrụ dị oke mkpa n'ọhịa nke akọrọ ntụ ntụ ntụ.ọrụ dị mkpa.
Oge nzipu: Jan-30-2023