Lub npe tshuaj ntawmacetic acidyog acetic acid, tshuaj formula CH3COOH, thiab cov ntsiab lus ntawm 99% acetic acid yog crystallized rau hauv dej khov hauv qab 16 ° C, los yog glacial acetic acid. Acetic acid tsis muaj xim, dej-soluble, tuaj yeem sib xyaw nrog dej hauv txhua qhov kev faib ua feem, tsis muaj zog, yog cov organic acid tsis muaj zog.
Raws li cov organic acid, acetic acid tsis yog tsuas yog siv dav hauv cov organic synthesis, organic chemical kev lag luam, zaub mov, tshuaj thiab lwm yam lag luam, tab sis kuj siv hauv kev lag luam ntxhua thiab dyeing.
Kev siv acetic acid hauv kev ntxuav thiab dyeing kev lag luam
01
Acid dissolving muaj nuj nqi ntawm acetic acid nyob rau hauv stain tshem tawm
Acetic acid raws li cov organic vinegar, nws muaj peev xwm yaj tannic acid, txiv hmab txiv ntoo acid thiab lwm yam organic acid yam ntxwv, nyom stains, kua txiv stains (xws li txiv hmab txiv ntoo hws, kua txiv hmab txiv ntoo, kua txiv lws suav, kua txiv hmab txiv ntoo, thiab lwm yam), tshuaj stains, kua txob. roj thiab lwm yam stains, cov stains no muaj cov organic vinegar cov khoom xyaw, acetic acid ua cov stain remover, tuaj yeem tshem tawm cov organic acid cov khoom xyaw hauv cov stains, xws li cov khoom xyaw xim hauv cov stains, Tom qab ntawd nrog kev kho oxidative bleaching, tag nrho cov tuaj yeem raug tshem tawm.
02
Acid-base neutralization ntawm acetic acid hauv kev lag luam ntxhua thiab dyeing
Acetic acid nws tus kheej tsis muaj zog acidic thiab tuaj yeem nruab nrab nrog cov hauv paus.
(1) Hauv kev tshem tawm cov tshuaj lom neeg, kev siv cov cuab yeej no tuaj yeem tshem tawm cov alkaline stains, xws li kas fes stains, tshuaj yej stains, thiab qee cov tshuaj stains.
(2) Qhov nruab nrab ntawm acetic acid thiab alkali tuaj yeem rov ua kom cov khaub ncaws tsis zoo los ntawm kev cuam tshuam ntawm alkali.
(3) Kev siv cov kua qaub tsis muaj zog ntawm acetic acid kuj tuaj yeem ua kom cov tshuaj bleaching ntawm qee qhov txo cov tshuaj bleach hauv cov txheej txheem bleaching, vim hais tias qee qhov txo cov tshuaj dawb tuaj yeem ua kom cov decomposition nyob rau hauv cov kua txiv hmab txiv ntoo thiab tso cov tshuaj bleaching, yog li ntawd, kho tus nqi PH. ntawm cov tshuaj bleaching nrog acetic acid tuaj yeem ua kom cov txheej txheem bleaching.
(4) Cov kua qaub ntawm acetic acid yog siv los kho cov kua qaub thiab alkali ntawm cov khaub ncaws hnav, thiab cov khoom siv hauv khaub ncaws raug kho nrog cov kua qaub, uas tuaj yeem kho lub xeev mos ntawm cov khoom siv khaub ncaws.
(5) Wool fiber ntaub, nyob rau hauv cov txheej txheem ironing, vim lub ironing kub siab dhau lawm, ua rau muaj kev puas tsuaj rau wool fiber, aurora tshwm sim, nrog dilute acetic acid tuaj yeem rov qab cov ntaub so ntswg fiber ntau, yog li ntawd, acetic acid kuj tuaj yeem cuam tshuam nrog cov khaub ncaws. vim ironing aurora phenomenon.
03
Rau cov dej-soluble dyes uas muaj hydroxyl thiab sulfonic acid pawg, fiber ntau fabrics uas tsis zoo alkali tsis kam (xws li txhob lo lo ntxhuav, rayon, ntaub plaub), nyob rau hauv cov xwm txheej ntawm vinegar, nws yog conducive rau cov xim thiab xim kho cov fibers.
Yog li ntawd, qee cov khaub ncaws uas tsis zoo alkaline tsis kam thiab yooj yim fading nyob rau hauv cov txheej txheem ntxuav yuav muab ntxiv rau ib tug me me ntawm acetic acid nyob rau hauv lub ntxhua khaub ncaws detergent los kho cov xim ntawm cov khaub ncaws.
Los ntawm qhov kev pom no, acetic acid yog siv dav hauv kev lag luam ntxhua thiab dyeing, tab sis hauv cov txheej txheem thov yuav tsum tau them sai sai rau cov teeb meem hauv qab no.
Rau cov ntaub ntawv uas muaj acetic acid fibers, thaum siv acetic acid kom tshem tawm cov stains, koj yuav tsum tau ceev faj ntxiv kom xyuam xim rau qhov concentration ntawm acetic acid tsis siab dhau. Qhov no yog vim acetate fiber ntau yog ua los ntawm ntoo, paj rwb ntaub plaub thiab lwm yam ntaub ntawv cellulosic thiab acetic acid thiab acetate, tsis zoo rau vinegar, muaj zog acid yuav degrade acetate fiber. Thaum stains muab tso rau ntawm acetate fibers thiab fabrics uas muaj acetate fibers, ob lub ntsiab lus yuav tsum tau muab sau tseg:
(1) Kev nyab xeeb siv concentration ntawm acetic acid yog 28%.
(2) Kev ntsuas cov tee yuav tsum tau ua ua ntej siv, tsis txhob kub thaum siv, yaug tam sim ntawd tom qab siv los yog ua kom tsis muaj zog alkali.
Kev ceev faj rau kev siv acetic acid yog raws li nram no:
(1) Tsis txhob sib cuag nrog ob lub qhov muag, yog tias sib cuag nrog cov ntsiab lus siab ntawm fermented acid, tam sim ntawd yaug nrog dej.
(2) Kev sib cuag nrog cov cuab yeej hlau yuav tsum zam kom tsis txhob muaj kev xeb.
(3) Kev sib cuam tshuam ntawm cov tshuaj thiab cov tshuaj alkaline sib raug zoo tuaj yeem tshwm sim neutralization cov tshuaj tiv thaiv thiab tsis ua haujlwm.
(4) Cov tshuaj tiv thaiv tsis zoo acetic acid yog khaus, thiab nws yog corrosive rau ntawm daim tawv nqaij thiab mucosa ntawm high concentrations.
Post lub sij hawm: Jun-21-2024