Dab tsi yog cov khoom ntawm acetate fiber?

Acetate fiber yog ib qho khoom siv fiber ntau uas ua los ntawm cov tshuaj tiv thaiv esterification siv acetic acid thiab cellulose ua raw cov ntaub ntawv. Raws li ib tug tswv cuab ntawm tsev neeg cov khoom siv fiber ntau, acetate fiber ntau yog qhov nyiam tshaj plaws ntawm kev ua cov ntaub ntawv lo lo ntxhuav, uas yog tsim los ntawm cov tshuab textile siab heev, nrog cov xim ci, ci tsos, du thiab nyiam kov, luster thiab kev ua tau zoo yog ze rau mulberry silk.

Cov khoom siv tshuaj

(1) Alkali tsis kam

Cov neeg ua haujlwm tsis muaj zog alkaline tsis ua rau muaj kev puas tsuaj loj rau acetate fibers. Tom qab ntsib cov alkalis muaj zog, tshwj xeeb tshaj yog diacetate fibers, lawv nquag deacetylation, ua rau poob phaus thiab txo qis zog thiab modulus.

(2) Acid kuj

Acetate fiber muaj cov kua qaub zoo stability. Feem ntau sulfuric acid, hydrochloric acid, thiab nitric acid tsis cuam tshuam rau lub zog, luster, thiab elongation ntawm cov fiber nyob rau hauv ib tug tej yam concentration range, tab sis yuav yaj nyob rau hauv concentrated sulfuric acid, concentrated hydrochloric acid, thiab concentrated nitric acid.

(3) Ua rau cov kuab tshuaj organic

Acetate fibers yog yaj tag nrho hauv acetone, DMF, thiab glacial acetic acid, thaum lawv tseem insoluble hauv ethanol thiab tetrachloroethylene.

(4) Chromaticity

Cov dyes feem ntau siv rau dyeing cellulose fibers yuav luag tsis muaj affinity rau acetate fibers thiab nyuaj rau zas. Qhov zoo tshaj plaws dyes rau acetate fibers yog dispersed dyes nrog tsawg molecular hnyav thiab zoo sib xws dyeing nqi.

Lub cev muaj zog

Acetate fiber muaj qhov zoo thermal stability, nrog lub iav hloov kub ntawm ib ncig ntawm 185 degree thiab melting kub ntawm ib ncig ntawm 310 degree. Thaum kawg ntawm cua sov, qhov hnyav poob ntawm cov fiber ntau yog 90.78%. Lub shrinkage tus nqi ntawm boiling dej yog kuj tsawg, tab sis high-kub kev kho mob yuav cuam tshuam lub zog thiab luster ntawm fibers, yog li qhov kub thiab txias yuav tsum tsis txhob ntau tshaj 85 degrees.

Acetate fiber muaj qhov elasticity zoo, zoo ib yam li txhob lo lo ntxhuav thiab ntaub plaub.

Thaum acetic acid fiber yog siv los ua cov khoom siv lim dej, kev ntes cov khoom feem ntau suav nrog kev cuam tshuam ncaj qha, kev sib tsoo inertial, diffusion deposition, lub ntiajteb txawj nqus, thiab electrostatic nyhuv. Ntxiv nrog rau kev pom thiab adsorption kev ua tau zoo ntawm cov pa fibers, acetate fibers kuj muaj kev xaiv pom thiab muaj peev xwm adsorption rau luam yeeb tar.