Iji kpebie ogo hydroxypropyl methyl cellulose

Ugbu ahydroxypropyl carboxymethyl celluloseahịa ahịa na-arịwanye elu, ọnụahịa ahụ adịghị edozi, otu esi eme ngwa ngwa kpochapụ àgwà hydroxypropyl methyl cellulose aghọwo nsogbu dị oké mkpa! Ya mere, otu esi ekpe ikpe ogo hydroxypropyl methylcellulose? Ihe mbụ ị ga-ele anya bụ ọcha nke hydroxypropyl cellulose; Ọ bụ ezie na ịcha ọcha enweghị ike ịpụta ma HPMC dị mma maka ngwa, ma na usoro nhazi, e nwekwara ụfọdụ ndị na-emepụta ihe ọjọọ ga-agbakwunye onye na-acha ọcha ọcha, ga-emerụ àgwà ya. Mana n'ikwu okwu n'ozuzu, ihe ka ọtụtụ n'ime ether cellulose dị mma bụ ọcha ka mma.

Nke abụọ, ịhụ fineness nke hydroxypropyl methyl cellulose: hydroxypropyl carboxymethyl cellulose urughuru size nke 80-100 ntupu, 120 ntupu obere, hydroxyethyl cellulose HECHPMC banyere 100 ntupu. HPMC maka ọtụtụ ntupu 60-80, izugbe methyl cellulose dị nro, mgbasawanye ka mma.

Ngwọta nke cellulose ether doro anya:HPMCtinye n'ime mmiri iji mepụta ngwọta colloid transperent, hụ na mkpebi ahụ dị elu, mkpebi ahụ dị elu, nke na-adịghị agbaze kemịkalụ dị ala.

Mgbe ngwaahịa ahụ na-ekpo ọkụ, a na-etinye gelatinized ma ọ bụ kpokọta ya ma mechaa gbazee ya. Ọ bụ hydrophobic na mmiri soluble. Concrete bụ isi njikọ na demulsification akụrụngwa nke putty ntụ ntụ na-eguzogide mmiri. Ụkpụrụ ya na-eguzogide mmiri bụ nke a: Na usoro nke ịgbakwunye mmiri na-akpali akpali redispersible latex ntụ ntụ na ciment, na latex ntụ ntụ na-anọgide na-alọghachi na mbụ emulsion ụdị, na latex irighiri na-agbasasịkwa agbasasị n'ime ciment mado. Mgbe simenti zutere mmiri, mmeghachi omume hydration na-amalite, na ngwọta Ca (OH) 2 na-erute saturation na kristal, na n'otu oge ahụ, a na-emepụta kristal ettringite na calcium silicate hydrate colloid. A na-edobe ụmụ irighiri ihe latex n'elu jel na irighiri ciment na-enweghị mmiri. Site na ọganihu nke mmeghachi omume hydration, ngwaahịa hydration na-abawanye, na-eji nwayọọ nwayọọ na-agbakọta akụkụ latex n'ime ihe ndị na-adịghị ahụkebe dị ka ciment, ma na-etolite akwa akwa akwa n'elu ciment gel. N'ihi na nwayọọ nwayọọ Mbelata nke akọrọ mmiri, The tightly juru n'ọnụ redispersed latex ahụ na gels na voids condense na-etolite a na-aga n'ihu film, akpụ a ngwakọta nke ciment mado interpenetrating matrix, na bonding ciment mado na ndị ọzọ ntụ ntụ aggregates.