Hnub Tim: 27, Dec, 2021

Lub npe "Kuv" yogtxos, uas yog dav tam sim no nyob rau hauv lub hlwb ntawm woody nroj tsuag, tshuaj ntsuab, thiab lwm cov ntoo nroj tsuag thiab lwm lub luag haujlwm, thiab ua lub luag haujlwm hauv kev txhim kho cov ntaub so ntswg.

Cov "cog pob txha" ntawm "kuv"

Nyob rau hauv Xwm, "ib txwm coexists nrog cellulose thiab hais tias, ua haujlwm ua ke los tsim cog pob txha pob txha. Cov neeg faib kuv ua peb hom:hardwood liignin, Conifer liigninthiabHerbal LigninCov. Feem ntau hais lus, "Kuv" tau faib tawm tsis tu ncua hauv cov nroj tsuag. Cov kev xav ntawm "Kuv" hauv cov txheej txheem nruab nrab yog qhov siab tshaj plaws ntawm phab ntsa sab hauv yog qhov thib ob, thiab cov concentration sab hauv lub cell yog qhov tsawg tshaj plaws. Raws li cov organic loj tshaj plaws hauv xwm, txawm hais tias "Kuv" tau siv los ntawm tib neeg ntau txhiab xyoo dhau los, nws tsis tau siv dav dav kom deb li deb.

"Kuv" hauv kev lag luam ntau lawm

Hauv Suav teb, "Kuv" tuaj yeem raug taug qab mus rau qhov tsim muaj ntawm cov ntawv thov. Lub hom phiaj ntawm pulping thiab papermaking yog kom khaws cellulose thiab hofficellulose thiab tshem tawm "Kuv". Cov khoom siv raw daws cov nplej cov khaub ncaws, red khaub ncaws, thiab lwm yam uas tsim los ntawm cov teeb meem kev ua qias tuaj ua si, thiab cov teeb meem kev coj ua tau zoo nyob rau hauv cov teeb meem papermaking, thiab yuav ua rau muaj cov teeb meem tsis muaj kuab paug Ntawm Wastewater tau dhau los ua qhov teeb meem loj hauv domestic muaj kev kho dej khib nyiab.

Muaj ob qho tseem ceeb ntawm kev lag luam txawv teb chaws txawv teb chaws. Ntawm ib sab tes, "Kuv" hauv ntoo tau sib cais los ntawm hydrolysis ntawm ntoo; Ntawm qhov tod tes, nws yog tsom rau ntawm cov khib nyiab dej ntawm daim ntawv kev lag luam. Cov teb chaws txawv teb chaws tau tsim ib txheej ntawm cov ntoo ntim-ua cov txheej txheem kev kho ua kua. Ua ntej, "Kuv" nyob rau hauv cov khib nyiab siv tau siv los ntawm alkali, thiab tom qab ntawd cov rov ua haujlwm Kuv siv rau kev sib txuas thiab khoom siv hluav taws xob. Qhov no yog ua tiav rau qhov loj tshaj plaws ntawm lub hauv paus ntawm kev daws teeb meem cov teeb meem muaj kuab paug. Nws txuag lub zog.

Sib cais thiab rho tawm ntawm "Kuv"

Txhawm rau txhim kho kev siv "Kuv", cov kws tshawb fawb hauv tsev thiab txawv teb chaws tau kawm txog kev sib cais thiab rho tawm ntawm "Kuv". Hauv kev lag luam ntau lawm, peb feem ntau sib cais thiab muab rho tawm thaum cellulose siv. Los ntawm cov kev pom ntawm kev tshawb fawb, tib neeg cais thiab rho tawm "Kuv" thiaj li tau txais cov qauv nrog cov qauv ntau dua thiab cov qauv tshwj xeeb thiab cov khoom.

Feem ntau hais lus, muaj ob txoj kev sib cais ntawm "Kuv": ib qho yog kom yaj cov cheebtsam uas tsis yog kuv hauv lub cev cog, thiab tom qab ntawd lim kom cais cov insoluble "Kuv". Ib qho piv txwv yog nyob hauv kev lag luam hydrolysis. Lub caij yog hydrolyzed rau cov piam thaj hauv qab cov kua qaub, thiab "Kuv tau sib cais raws li cov seem ntawm hydrolysis; Lwm tus yog kom yaj "Kuv" hauv cov nroj tsuag lub cev, cais lwm yam kev sib cais thiab tom qab ntawd precipite kom tau txais cov "i".

Cov kev sib cais tom kawg muaj nyob rau hauv cov sam thiaj ntawm cov txheej txheem ntawm papermaking. Nws yog subdivided ua ob hom sib cais txoj kev sib cais. Tus thawj "Kuv" yog sulfonated rau hauv dej-solubletojosulfonate, thiab tom qab ntawd kho nrog txiv qaub mis, "Kuv" tuaj yeem ua nag; Lub tom kawg yog ua noj nrog tuab caustic qab zib dej qab zib ntawm qhov kub thiab txias, lossis nqaij txig nplej lossis cov quav nplej. Hloov pauv "Kuv" rau hauv Alkaline "Kuv", lim tawm lub cellulose, thiab tom qab ntawd acid-kho cov kev daws teeb meem ntxiv kom precipitate "i".

Lub "triple tus cwj pwm" ntawm "Kuv" thiab ntau tshwj xeeb

"Kuv" yog polyphenol peb-seem network polymer compound nrog phenylpropane raws li cov txheej txheem kev teeb tsa. Nws muaj triple cwm pwm (uas yog, peb cov qauv sib txawv): qauv Gua Doocyl, qauv syrringyl thiab p-hydroxyphenyl qauv. Kuv muaj pes tsawg leeg ntawm cov ntsiab txawv nrog cov hom nroj tsuag thiab sib cais.

Muaj ntau cov pab pawg ua haujlwm nyob rau hauv cov qauv ntawm "Kuv" (cov pab pawg muaj tshuaj pleev ib pawg, cov pab pawg carbrox, aldehyde pawg neeg) thiab lwm pab pawg ua haujlwm), uas pab tau "i "Yuav kom muaj ntau yam tshuaj lom neeg cov kev tshua, xws li: oxidation, txo, kev siv dej cawv, idourysis, Pw acidolysis, pawv cov duab, acylation, Alkration, nittration, etherification, sulfonation, polycondensation lossis sib txuas copolymerization.

Lub cob synthesized nrog "Kuv" raws li cov khoom siv raw yog qis dua li cov phenolic resin qhov chaw, thiab muaj ib tus nqi muaj. Nyob rau hauvtxosLatx co-sedimented los ntawm "Kuv" thiab ntuj roj hmab looj, yog li hloov cov roj hmab ntau dua dub thiab txo tus nqi ntawm cov nqi roj hmab. "Kuv kuj tseem siv tau ua cov khoom siv raw rau ntawm cov roj tsim hluav taws xob txhawm rau txhim kho cov roj rov qab tus nqi thiab cov roj ua kom zoo ntawm cov roj av.

Ib qho ntxiv, "Kuv tseem tuaj yeem siv ua surfactants, cov tshuaj tua tsiaj, thiab lwm yam yuav muaj ntau txoj hauv kev los ntawm kuv cov kev txawj ntse.