Ethyl cellulose(Ethyl cellulose ether), nke a makwaara dị ka cellulose ether, nke a na-akpọ EC.
Ngwakọta molekụla na usoro nhazi: [C6H7O2(OC2H5)3] n.
1. Iji
Ngwaahịa a nwere ọrụ nke bonding, ndochi, film akpụ, wdg A na-eji resin sịntetik plastics, coatings, roba nnọchi, inks, ikpuchi ihe, na-ejikwa dị ka adhesives, textile finishing agents, wdg, na ike ga-eji dị ka anụmanụ na ugbo na anụ ugbo Feed mgbakwunye, eji dị ka nrapado na ngwá electronic na agha.
2. Nka na ụzụ chọrọ
Dịka ojiji dị iche iche si dị, enwere ike kewaa EC azụmaahịa ụzọ abụọ: ọkwa ụlọ ọrụ mmepụta ihe na ọkwa ọgwụ, yana n'ozuzu soluble na organic solvents. Maka ọkwa ọgwụ EC, ọkọlọtọ ịdị mma ya kwesịrị iru ụkpụrụ nke mbipụta China Pharmacopoeia 2000 (ma ọ bụ mbipụta USP XXIV/NF19 na ọkọlọtọ Japanese Pharmacopoeia JP).
3. Njirimara anụ ahụ na nke kemịkal
1. Ọdịdị: EC bụ ọcha ma ọ bụ ntụ ntụ ntụ ntụ ntụ, enweghị isi.
2. Ngwongwo: commercialized EC bụ n'ozuzu insoluble na mmiri, ma soluble dị iche iche organic solvents. Ọ nwere ezigbo nkwụsi ike nke okpomọkụ, ọdịnaya ntụ dị oke ala mgbe ọkụ na-agba ya, ọ na-esikwa ike na-arapara ma ọ bụ na-enwe mmetụta astringent. Ọ nwere ike ịmepụta ihe nkiri siri ike. Ọ ka nwere ike ịnọgide na-enwe mgbanwe. Ngwaahịa a abụghị ihe na-egbu egbu, nwere ihe ndị na-egbochi ihe ndị dị ndụ, ma na-adịghị arụ ọrụ nke ọma, mana ọ na-enwekarị mmebi oxidative n'okpuru ìhè anyanwụ ma ọ bụ ultraviolet. Maka ebumnuche pụrụ iche EC, e nwekwara ụdị na-agbaze na lye na mmiri dị ọcha. Maka EC na ogo nke nnọchi n'elu 1.5, ọ bụ thermoplastic, na ebe dị nro nke 135 ~ 155 ° C, ebe mgbaze nke 165 ~ 185 ° C, ike ndọda kpọmkwem nke 0.3 ~ 0.4 g / cm3, na njupụta nke 1.07 ~ 1.18 g / cm. Ogo nke etherification nke EC na-emetụta solubility, mmịpụta mmiri, ihe eji arụ ọrụ na ihe ndị na-ekpo ọkụ. Ka ogo nke etherification na-abawanye, solubility na lye na-ebelata, ebe solubility na organic solvents na-abawanye. Soluble na ọtụtụ organic solvents. Ihe mgbaze a na-ejikarị bụ toluene/ethanol dị ka 4/1 (arọ) ihe mgbaze agwakọta. Ogo nke etherification na-abawanye, ebe dị nro na hygroscopicity na-ebelata, na ojiji okpomọkụ bụ -60 ° C ~ 85 ° C. Ike tensile 13.7 ~ 54.9Mpa, olu resistivity 10 * e12 ~ 10 * e14 ω.cm
Ethyl cellulose (DS: 2.3-2.6) bụ ihe na-abụghị ionic cellulose ether nke a na-apụghị ịsacha na mmiri ma soluble na organic solvents.
1.Ọ bụghị mfe ọkụ.
2.Good thermal kwụsie ike na magburu onwe thermos-plasticity.
3.Ọ dịghị agbanwe agba ka ìhè anyanwụ.
4.Good mgbanwe.
5.Good dielectric Njirimara.
6.It nwere magburu onwe alkali eguzogide na adịghị ike acid eguzogide.
7.Good mgbochi ịka nká arụmọrụ.
8.Good nnu na-eguzogide, oyi na-eguzogide na mmiri absorption nkwụsị.
9.Ọ kwụsiri ike na kemịkalụ na agaghị emebi na nchekwa ogologo oge.
10.It nwere ike dakọtara na ọtụtụ resins na nwere ezi ndakọrịta na niile plasticizers.
11.It dị mfe ịgbanwe agba n'okpuru ike alkaline gburugburu ebe obibi na okpomọkụ.
4. Usoro mgbasa
Ihe mgbaze agwakọta nke a na-ejikarị maka ethyl cellulose (DS: 2.3 ~ 2.6) bụ hydrocarbons aromatic na alcohols. Aromatics nwere ike ịbụ benzene, toluene, ethylbenzene, xylene, wdg, na ego nke 60-80%; Alcohols nwere ike ịbụ methanol, ethanol, wdg, nke nwere oke 20-40%. Jiri nwayọọ tinye EC n'ime akpa nke nwere ihe mgbaze n'okpuru edemede ruo mgbe mmiri na-agbaze kpamkpam.
Nọmba CAS: 9004-57-3
5. Ngwa
N'ihi mmiri na-adịghị edozi ya.ethyl cellulosea na-ejikarị eme ihe dị ka mbadamba mbadamba na ihe mkpuchi ihe nkiri, wdg, a pụkwara iji ya mee ihe dị ka ihe mgbochi matriks iji kwadebe ụdị dị iche iche nke matriks kwadoro-ntọhapụ mbadamba;
A na-eji ya dị ka ihe agwakọta ọnụ iji kwadebe nkwadebe ntọhapụ na-adịgide adịgide yana pellet mwepu;
A na-eji ya dị ka ihe inyeaka ihe mkpuchi iji kwadebe microcapsules na-adịgide adịgide, nke mere na enwere ike ịhapụ mmetụta ọgwụ ahụ na-aga n'ihu ma gbochie ụfọdụ ọgwụ ndị na-eme ka mmiri na-eme ka ọ ghara ịdị irè;
Enwere ike iji ya dị ka onye na-ekesa, stabilizer, na onye na-ejigide mmiri n'ụdị usoro ọgwụgwọ ọgwụ dị iche iche iji gbochie mmiri mmiri na mmebi ọgwụ ma melite nchekwa nchekwa nke mbadamba nkume.
Oge nzipu: Eprel-28-2024