Kedu ihe ndị dị na carboxymethyl cellulose?

Kedu ihe ndị dị na carboxymethyl cellulose?

Azịza:Cellulose Carboxymethylnwekwara ihe dị iche iche n'ihi ọkwa dị iche iche nke nnọchi ya. Ogo nke nnọchi, nke a makwaara dị ka ogo etherification, pụtara ọnụọgụgụ nkezi nke H na otu OH hydroxyl atọ nke ejiri CH2COONa dochie. Mgbe otu hydroxyl atọ dị na mgbanaka dabere na cellulose nwere 0.4 H na otu hydroxyl nke ejiri carboxymethyl dochie, enwere ike ịgbaze ya na mmiri. N'oge a, a na-akpọ ya ogo nnọchi 0.4 ma ọ bụ ogo nnọchi etiti (ogo nnọchi 0.4-1.2).

Njirimara nke carboxymethyl cellulose:

(1) Ọ bụ ntụ ntụ ọcha (ma ọ bụ ọka siri ike, nke nwere eriri), ọ naghị atọ ụtọ, ọ dịghị emerụ ahụ, ọ na-agbaze ngwa ngwa na mmiri, ọ na-emekwa ka ọ na-arapara nke ọma, ihe ngwọta ya na-anọpụ iche ma ọ bụ na-adịghị mma. O nwere ike ịgbasa na njikọ dị mma.

(2) Enwere ike iji mmiri ya mee ihe dị ka ihe na-eme ka mmanụ/mmiri na ụdị mmiri/mmanụ dị ka ihe na-eme ka mmanụ na wax dị ka ihe na-eme ka mmanụ na wax dị ka ihe na-eme ka ihe ...

(3) Mgbe mmiri ahụ zutere nnu ígwè dị arọ dịka lead acetate, ferric chloride, silver nitrate, stannous chloride, na potassium dichromate, mmiri nwere ike ịpụta. Agbanyeghị, ewezuga lead acetate, enwere ike ịgbaze ya ọzọ na mmiri sodium hydroxide, ihe ndị dị ka barium, iron na aluminom dịkwa mfe ịgbaze na mmiri ammonium hydroxide 1%.

(4) Mgbe ihe ngwọta ahụ zutere ihe ngwọta organic acid na inorganic acid, mmiri ozuzo nwere ike ịpụta. Dịka ihe a chọpụtara si dị, mgbe uru pH bụ 2.5, mmiri ozuzo amalitela. Ya mere, a pụrụ iwere pH 2.5 dị ka isi ihe dị mkpa.

(5) Maka nnu dịka calcium, magnesium na nnu tebụl, mmiri agaghị ezo, mana a ga-ebelata oke mmiri ahụ, dịka itinye EDTA ma ọ bụ phosphate na ihe ndị ọzọ iji gbochie ya.

(6) Okpomọkụ nwere nnukwu mmetụta na viscosity nke mmiri mmiri ya. viscosity na-ebelata n'otu aka ahụ mgbe okpomọkụ rịrị elu, na nke ọzọ. Structure nke mmiri mmiri na okpomọkụ ụlọ anaghị agbanwe agbanwe, mana viscosity nwere ike ibelata nwayọ nwayọ mgbe a na-ekpo ọkụ karịa 80°C ruo ogologo oge. N'ozuzu, mgbe okpomọkụ anaghị agafe 110°C, ọbụlagodi na a na-echekwa okpomọkụ ahụ ruo awa 3, wee jụọ oyi ruo 25°C, viscosity ka na-alaghachi n'ọnọdụ mbụ ya; mana mgbe a na-ekpo ọkụ okpomọkụ ruo 120°C maka awa 2, ọ bụ ezie na a na-eweghachi okpomọkụ ahụ, viscosity ahụ na-ada site na 18.9%.

(7) Uru pH ga-enwekwa mmetụta ụfọdụ na viscosity nke mmiri mmiri ya. N'ozuzu, mgbe pH nke mmiri mmiri dị ala si na viscosity dị ala pụọ ​​na viscosity dị ala, viscosity ya enweghị mmetụta dị ukwuu, ebe maka mmiri mmiri dị ọkara, ọ bụrụ na pH ya si na viscosity dị ala pụọ, viscosity ya na-amalite ibelata nwayọọ nwayọọ; ọ bụrụ na pH nke mmiri mmiri dị elu si na viscosity dị elu pụọ, viscosity ya ga-ebelata. Ọdịda dị egwu.

(8) Dakọtara na gluu ndị ọzọ na-agbaze mmiri, ihe na-eme ka ọ dị nro na resin. Dịka ọmụmaatụ, ọ dakọtara na gluu anụmanụ, gum arabic, glycerin na starch soluble. Ọ dakọtara na iko mmiri, polyvinyl alcohol, urea-formaldehyde resin, melamine-formaldehyde resin, wdg, mana ruo n'ókè dị ala.

(9) Ihe nkiri ahụ e ji ọkụ ultraviolet mee ruo awa 100 ka enweghị agba ma ọ bụ mmebi.

(10) E nwere oke viscosity atọ ị ga-ahọrọ dịka e si eji ya. Maka gypsum, jiri viscosity ọkara (2% mmiri mmiri na 300-600mPa·s), ọ bụrụ na ịhọrọ viscosity dị elu (1% ngwọta na 2000mPa·s ma ọ bụ karịa), ị nwere ike iji ya na dose kwesịrị ibelata nke ọma.

(11) Mmiri mmiri ya na-arụ ọrụ dị ka ihe na-egbochi gypsum.

(12) Nje bacteria na obere nje anaghị enwe mmetụta doro anya n'ụdị ntụ ntụ ya, mana ha na-emetụta mmiri mmiri ya. Mgbe mmerụ ahụ gasịrị, viscosity ga-ada ma blind ga-apụta. Ịtinye ego nchekwa kwesịrị ekwesị tupu oge eruo nwere ike ịnọgide na-enwe viscosity ya ma gbochie blind ruo ogologo oge. Ihe nchekwa dịnụ bụ: BIT (1.2-benzisothiazolin-3-one), racebendazim, thiram, chlorothalonil, wdg. Ọnụọgụ mgbakwunye ntụnyere na mmiri mmiri bụ 0.05% ruo 0.1%.

Kedụ ka hydroxypropyl methylcellulose si arụ ọrụ dị ka ihe na-ejide mmiri maka ihe na-ejikọ anhydrite?

Azịza: Hydroxypropyl methylcellulose bụ ihe na-ejigide mmiri nke ọma maka ihe simenti gypsum. Ka ọdịnaya nke hydroxypropyl methylcellulose na-abawanye. Nchekwa mmiri nke ihe simenti gypsum na-abawanye ngwa ngwa. Mgbe etinyeghị ihe na-ejigide mmiri, ọnụego nchekwa mmiri nke ihe simenti gypsum dị ihe dị ka 68%. Mgbe ọnụọgụ ihe na-ejigide mmiri dị 0.15%, ọnụego nchekwa mmiri nke ihe simenti gypsum nwere ike iru 90.5%. Ihe achọrọ maka nchekwa mmiri nke ihe simenti ala. Ọnụọgụ ihe na-ejigide mmiri karịrị 0.2%, na-eme ka ọnụọgụgụ ahụ dịkwuo elu, ọnụego nchekwa mmiri nke ihe simenti gypsum na-abawanye nwayọ. Nkwadebe nke ihe simenti anhydrite. Ọnụọgụ kwesịrị ekwesị nke hydroxypropyl methylcellulose bụ 0.1%-0.15%.

Kedu ihe dị iche iche nke cellulose dị iche iche na plasta nke paris?

Azịza: Enwere ike iji ma carboxymethyl cellulose na methyl cellulose dị ka ihe na-ejide mmiri maka plaster of paris, mana mmetụta nke carboxymethyl cellulose na-ejide mmiri dị ala karịa nke methyl cellulose, carboxymethyl cellulose nwekwara nnu sodium, yabụ ọ dabara adaba maka Plaster of Paris nwere mmetụta na-ebelata ma na-ebelata ike nke plaster ahụ.Methyl cellulosebụ ngwakọta zuru oke maka ihe ndị e ji simenti gypsum mee nke na-ejikọta mmiri, ihe ndị na-eme ka ọ sie ike, ihe ndị na-eme ka ọ sie ike, na ihe ndị na-eme ka ọ dị nro, ma e wezụga na ụfọdụ ụdị nwere mmetụta na-eme ka ọ ghara ịdị irè mgbe usoro ahụ buru ibu. Ọ dị elu karịa carboxymethyl cellulose. N'ihi nke a, ọtụtụ ihe ndị e ji simenti gypsum mee na-eji usoro nke ijikọ carboxymethyl cellulose na methyl cellulose, nke na-egosipụtaghị naanị njirimara ha (dịka mmetụta na-eme ka ọ ghara ịdị irè nke carboxymethyl cellulose, mmetụta na-eme ka ọ sie ike nke methyl cellulose), ma na-enye uru ha (dịka mmetụta na-eme ka mmiri ghara ịdị irè na mmetụta na-eme ka ọ dị arọ). N'ụzọ dị otu a, enwere ike imeziwanye arụmọrụ na-eme ka mmiri ghara ịdị irè nke ihe simenti gypsum na arụmọrụ zuru oke nke ihe simenti gypsum dịkwuo mma, ebe a na-edebe mmụba ọnụ ahịa na ebe kachasị ala.