Ụdị Methyl Cellulose Ether
A. Hydroxypropyl methylcellulose (HPMC) bụ nke sitere na owu a nụchara anụcha nke ukwuu dị ka akụrụngwa, nke a na-akpachapụ nke ọma n'okpuru ọnọdụ alkaline.
B. Hydroxyethyl methyl cellulose (HEMC), ether cellulose na-abụghị ionic, bụ ntụ ntụ ọcha, enweghị isi na enweghị ụtọ.
C. Hydroxyethylcellulose (HEC) bụ ihe na-abụghị ionic surfactant, na-acha ọcha n'ọdịdị, enweghị isi na enweghị ụtọ na ntụ ntụ na-adị mfe.
Ndị dị n'elu bụ ndị na-abụghị ionic cellulose ethers, na ionic cellulose ethers (dị ka carboxymethyl cellulose (CMC)).
N'oge a na-eji ụrọ ntụ ntụ akọrọ, n'ihi na ionic cellulose (CMC) adịghị eguzosi ike n'ihe n'ihu ion calcium, a na-ejikarị ya eme ihe na usoro gelling inorganic na ciment na lime slaked dị ka ihe simenti. N'ebe ụfọdụ na China, Ụfọdụ n'ime mgbidi putties esichara na starch gbanwetụrụ dị ka isi cementing ihe na Shuangfei ntụ ntụ dị ka filler na-eji CMC dị ka thickener, ma n'ihi na ngwaahịa a na-adịkarị mfe mildew na ọ bụghị mmiri na-eguzogide, ọ na-eji nwayọọ nwayọọ kpochapụ. site n'ahịa .
Ka ọ dị ugbu a, a na-akpọkwa ether cellulose ethers nke a na-ejikarị eme ihe n'ime ụlọ akọrọ hydroxypropyl methylcellulose ether (HPMC) na hydroxyethyl methylcellulose ether (HEMC). Maka ngwaahịa nwere ojiji dị iche iche, usoro nke cellulose ether dịkwa iche, dị ka 0.02% dị ka mgbidi mgbidi ruo 0.1%. Dị ka plasta ngwa agha, nke dị elu nwere ike isi na 0.3% ruo 0.7% dị ka tile nrapado.
Njirimara nke cellulose ether
❶ Cellulose ether nwere ezigbo njide mmiri na ngwa agha. Ọrụ njide mmiri ya nwere ike igbochi mkpụrụ ahụ ka ọ ghara ịmịkọrọ mmiri dị ukwuu ngwa ngwa ma gbochie ikuku mmiri, iji hụ na mmiri zuru oke mgbe ciment na-agbaze. Ọ nwere ike igbochi ngwa agha ahụ nke ọma na ihicha na ịgbawa n'ihi mmiri na-efu ngwa ngwa, nke mere na ngwa agha ahụ nwere ogologo oge ihe owuwu.
N'ikwu okwu n'ozuzu, njide mmiri nke ciment slurry na-abawanye na mmụba nke ọdịnaya cellulose ether. Ka nnukwu viscosity nke cellulose ether agbakwunyere, ka mma na-ejigide mmiri.
❷ Mmetụta na-ebuwanye ibu nke cellulose ether nwere ike ijikwa ngwa agha ahụ iji nweta nkwụsi ike kachasị mma, meziwanye njikọ nke ngwa agha ahụ, nweta mmetụta mgbochi sag, kwalite ịrụ ọrụ, ma na-abawanye arụmọrụ ụlọ.
❸ Cellulose ether nwere ike imeziwanye viscosity mmiri mmiri nke ngwa ngwa mmiri, na-ahụ na ngwa agha mmiri ahụ nwere mmetụta dị mma na njikọ dị iche iche.
❹ Cellulose ether na-eme ka ike nke ngwa agha dịkwuo mma, ma nwee ike hụ na oge mmiri zuru ezu iji mee ka ciment mee ka mmiri dị ọcha ọbụna na gburugburu ebe okpomọkụ dị elu, si otú a na-eme ka mma nke ngwa agha dịkwuo mma.
Ngwa nke cellulose ether
dabere na ciment:
⑴, putty, ⑵, ngwa agha plasta, ⑶, ngwa agha na-adịghị mmiri, ⑷, onye na-ahụ maka caulking, ⑸, ngwa agha plasta, ⑹, ngwa agha na-agba, ⑺, ngwa agha eji achọ mma, ⑻, nrapado tile, ⑼, ciment, n'okpuru mmiri nke onwe, ⑾, ngwa agha masonry, ⑿, ngwa nrụzi, ⒀, slurry thermal ikpuchi, ⒁, EIFS thermal mkpuchi ihe njikọ ngwa agha, ⒂, ihe na-abụghị shrinkage grouting.
Ngwa ụlọ ndị ọzọ:
⑴, ngwa agha anaghị egbochi mmiri, ⑵, ngwa agha nwere akụkụ abụọ.
Site na mmepe nke ngwa agha agwakọta akọrọ, cellulose ether aghọwo ihe dị mkpa simenti ngwa ngwa admixture. Otú ọ dị, e nwere ọtụtụ ụdị na nkọwa nke cellulose ether, na àgwà n'etiti batches ka na-agbanwe agbanwe. Mgbe ị na-eji ya, ịkwesịrị ịṅa ntị na:
1. Arụ ọrụ nke ngwa agha gbanwetụrụ nwere njikọ chiri anya na mmepe viscosity nke cellulose ether. Ọ bụ ezie na ngwaahịa na elu nominal viscosity nwere dịtụ elu ikpeazụ viscosity, n'ihi na ngwa ngwa mgbasa mgbasa, ọ na-ewe a ogologo oge iji nweta ikpeazụ viscosity; na mgbakwunye, The cellulose ether na coarser ụmụ irighiri na-ewe ogologo oge iji nweta ikpeazụ viscosity, ya mere ngwaahịa na elu viscosity bụchaghị na-arụ ọrụ mma àgwà.
2. N'ihi njedebe nke ogo polymerization nke cellulose ether raw material, oke viscosity nke cellulose ether nwekwara oke.
Oge nzipu: Feb-02-2023