Eteri za starch mu bwubatsi ni iki?

Eteri z'ibinyampekeni ibintu biva muri polymeri bishongeshwa n'amazi bikozwe muri sitashi karemano binyuze mu guhindura ibintu hakoreshejwe imiti cyangwa imiterere. Bikoreshwa cyane cyane mu bwubatsi nk'inyongera kugira ngo bigumane amazi, bibyimbe, binoze ubushobozi bwo gukora, kandi binoze imiterere ya rheological y'ibikoresho. Ubusanzwe bikomoka ku bimera nk'ibigori, ibirayi, n'imyumbati. Amatsinda ya eteri yinjizwa binyuze mu buryo bwo gushonga, bigatuma bishonga, bikagira ingaruka ku buryo bikomera, bigatuma birushaho gukora neza mu duce twa alkaline no mu buryo bugoye.

Mu nganda z'ubwubatsi, eteri za starch zikoreshwa cyane mu buryo bw'imyanda yumye nka kole z'amatafari, ifu y'imbere n'iy'inyuma y'inkuta, imyanda irinda ubushyuhe, n'ibikoresho byigenga bishingiye kuri gypsum cyangwa sima. Imikoreshereze yazo isanzwe ari nto cyane, akenshi iri hagati ya 0.02% na 0.1%, ariko zishobora kunoza cyane ubushobozi bwo gukora. Uburyo bw'ingenzi bwo gukora burimo:

Guhindura imiterere n'imiterere y'amazi: Ifu ya sitashi irabyimba mu mazi kugira ngo ikore umuti urimo viscous. Iyo ikoreshejwe hamwe n'ibindi binini (nk'ifu ya hydroxypropyl methylcellulose (HPMC) na hydroxyethyl methylcellulose (MHEC), ishobora kunoza umusaruro n'agaciro ka thixotropy ya mortilage, bigatuma amazi atemba neza mu gihe cyo kuyikoresha ndetse ikagabanya no kugabanuka kw'amazi nyuma yo kuyihagarika.

Kunoza uburyo amazi abikwa: Molekile za starch zahinduwe zikunda amazi menshi, zigafata amazi kandi zigafungana, zigagabanya amazi asohoka mu butaka, zigatuma sima cyangwa gypsum birushaho kumera neza, kandi zigatuma amazi arushaho gukomera no gufatana.

Kurinda gucika no kuva amaraso: Mu matiles cyangwa mu buryo bworoshye, ethers za starch zishobora kunoza ubushobozi bwa mortir bwo kudacika. Mu bikoresho byigenga cyangwa byoroshye gucika, bishobora kugabanya kuva amaraso no gutuma ubuso bugenda neza.

Kunoza uburyo bwo gushyiramo: Bituma gukurura no gukwirakwiza byoroha, bigabanya "gufata icyuma," bikongera imikorere myiza no kunoza ubwiza bw'umusaruro.

Eteri za sitashi zikunze gukoreshwa hamwe na eteri za selulosi (HPMC, HEMC, na MHEC) mu buryo bw'imvange. Eteri za selulosi zitanga ubushobozi bwo kubika amazi no kuyakomeza, mu gihe eteri za sitashi zihindura thixotropy n'uburyo ibintu bimeze, bigatuma habaho gukora neza. Urugero, mu buryo bw'imvange ya tile, ingano ikwiye ya eteri ya sitashi ishobora kugabanya ubukana bukabije buterwa na eteri za selulosi zifite ubukana bwinshi, bigatuma iyo mvange yoroha kuyikoresha. Mu ifu ya putty, ishobora kunoza uburyo bworoshye no kugabanya ibyago byo gushwanyagurika no kwangirika.

Mu bwubatsi, eteri za starch zitanga ibyiza bikurikira:

Kubungabunga ibidukikije: Bikozwe mu bimera bisanzwe, bishobora kwangirika kandi bigira ingaruka nke ku bidukikije.

Kunoza ikiguzi: Ikoreshwa rike ritanga impinduka zikomeye, bigabanya kwishingikiriza ku nyongeramusaruro zihenze.

Uburyo bwo guhuza imvange: Ikwiriye gukoreshwa mu byuma bikozwe muri sima, gypsum, n'ibivanze, kandi ijyanye n'ibindi bikoresho bitandukanye.

Bitandukanyeeteri y'ibishyimboUbwoko n'uburyo bwo guhindura ibintu bivamo impinduka zitandukanye mu gipimo cyo gusenyuka, ubushobozi bwo gushonga, ubushobozi bwo kurwanya alkali, no kudahungabana. Kubwibyo, mu bikorwa bifatika, ni ngombwa guhitamo ubwoko bukwiye hashingiwe ku buryo bwo gukora, aho ubwubatsi buherereye, n'imikorere iteganyijwe, no kugena igipimo cyiza binyuze mu igerageza. Ifu ya Starch ether ni inyongeramusaruro "iciriritse, ingaruka nini" mu bikoresho by'ubwubatsi. Inoza cyane rheology ya mortier, kubika amazi, no gukora neza, yongera cyane imikorere myiza y'ubwubatsi n'ubwiza bw'umusaruro urangiye. Ni inyongeramusaruro y'ingenzi mu buryo bwa none bwa mortier yumye.