Lub luag haujlwm ntawm Sodium Cyanide hauv Textile Printing thiab Dyeing

Introduction

sodium cyanide (NaCN), cov tshuaj sib xyaw nrog qhov hnyav molecular ntawm 49.007 g / mol, yog dawb crystalline khoom. Nws yog tshuaj lom heev thiab yuav tsum tau ceev faj heev. Txawm tias nws toxicity, sodium cyanide plays ob peb lub luag haujlwm tseem ceeb hauv cov textile printing thiab dyeing kev lag luam. Kab lus no yuav tshawb txog cov haujlwm no kom ntxaws, nrog rau kev txiav txim siab txog kev siv.

Muaj nuj nqi hauv Textile Printing thiab Dyeing

1. Mordant hauv Dyeing txheej txheem

Hauv textile dyeing, a tom yog ib yam khoom siv los pab dyes ua raws li cov ntaub. Sodium cyanide tuaj yeem ua tus mordant hauv qee cov txheej txheem dyeing. Nws tsim complexes nrog hlau ions tam sim no nyob rau hauv ib co dyes thiab cov textile fibers. Piv txwv li, nyob rau hauv cov ntaub ntawv ntawm ntuj dyes uas muaj hlau - muaj chromophores (ib feem ntawm lub molecule lub luag hauj lwm rau xim), Sodium Cyanide tuaj yeem txhim kho kev khi ntawm cov xim thiab cov fiber ntau. Qhov no yog vim hais tias cov cyanide ion (CN⁻) muaj zog affinity rau hlau ions. Nws tuaj yeem tsim kev sib koom ua ke, uas nyob rau hauv lem txuas qhov sib txawv ntawm cov dyeing thiab ntaub, uas ua rau ntau colourfast thiab check dyeing.

2. Synthesis ntawm Textile Fibers

Yuav luag tag nrho cov hluavtaws fibers siv hauv kev lag luam textile cia siab rau Sodium cyanide thaum lawv cov txheej txheem ntau lawm. Piv txwv li, nyob rau hauv cov synthesis ntawm nylon, ib qho ntawm feem ntau hluavtaws fibers, sodium cyanide yog siv nyob rau hauv kev tsim ntawm adiponitrile, uas yog ib tug tseem ceeb nruab nrab. Txoj kev tshuaj tiv thaiv yog siv sodium cyanide los qhia cov pab pawg nitrile. Nyob rau hauv cov ntaub ntawv ntawm polyester fibers, txawm hais tias cov txheej txheem yog complex thiab feem ntau muaj cov tshuaj sib txawv cov tshuaj tiv thaiv piv rau nylon, sodium cyanide tseem tuaj yeem koom nrog hauv cov synthesis ntawm qee cov khoom pib lossis hauv qee cov txheej txheem catalytic. Cov hluavtaws fibers no tau siv dav hauv kev lag luam textile vim lawv cov khoom tsim nyog xws li lub zog, durability, thiab wrinkle - tsis kam, thiab sodium cyanide plays lub luag haujlwm tseem ceeb hauv lawv cov khoom.

3. Dye Production

Sodium cyanide yog siv los tsim ntau yam dyes siv hauv textile printing thiab dyeing. Nws ua hauj lwm raws li ib tug raw khoom nyob rau hauv lub synthesis ntawm tej hom dyes, tshwj xeeb tshaj yog cov uas complex chemical structures. Piv txwv li, nyob rau hauv zus tau tej cov reactive dyes, uas yog dav siv rau dyeing cellulosic fibers zoo li paj rwb, sodium cyanide tej zaum yuav koom nyob rau hauv lub multi-step synthesis txheej txheem. Reactive dyes tsim covalent bonds nrog cov fiber ntau molecules thaum lub sij hawm dyeing txheej txheem, muab colourfastness zoo heev. Cov cyanide - muaj cov khoom sib txuas tuaj yeem siv los tsim cov pawg reactive nyob rau hauv cov xim molecule uas yog lub luag haujlwm rau qhov kev tsim cov ntawv cog lus no.

Kev nyab xeeb thiab kev xav txog ib puag ncig

Muab nws cov tshuaj lom neeg heev, kev siv sodium cyanide hauv kev lag luam textile yuav tsum tau tswj nruj me ntsis. Kev nqus pa, kev sib cuag ntawm daim tawv nqaij, lossis kev noj cov tshuaj sodium cyanide me me tuaj yeem ua rau tib neeg tuag taus. Nws tuaj yeem ua rau cov hlwb tsis tuaj yeem siv cov pa oxygen, ua rau cov cell tuag sai thiab thaum kawg, yog tias cov tshuaj txaus nqus tau, kev tuag ntawm tus neeg.

Los ntawm ib puag ncig kev xav, kev pov tseg kom zoo ntawm cov khib nyiab uas muaj sodium cyanide yog qhov tseem ceeb. Yog tias tso rau hauv dej hauv lub cev, sodium cyanide tuaj yeem hydrolyze los tsim cov roj hydrogen cyanide, uas tseem muaj tshuaj lom thiab tuaj yeem ua rau muaj kev hem thawj rau cov dej hauv dej thiab cov ecosystem ib puag ncig. Hauv ntau lub tebchaws, muaj cov kev cai nruj thiab cov kev cai tswj hwm kev khaws cia, tuav, thiab pov tseg ntawm sodium cyanide hauv chaw tsim khoom, suav nrog textile printing thiab dyeing chaw. Cov kev cai no tsom kom txo qis kev pheej hmoo ntawm kev raug xwm txheej thiab kev kis kab mob ib puag ncig.

xaus

Sodium cyanide, txawm hais tias nws paub zoo txog kev toxicity, plays lub luag haujlwm tseem ceeb hauv textile printing thiab dyeing, los ntawm kev yooj yim rau cov dyeing - ntaub khi raws li ib tug mordant los ua ib qho tseem ceeb nyob rau hauv lub synthesis ntawm textile fibers thiab dyes. Txawm li cas los xij, vim nws qhov hnyav hnyav thiab muaj peev xwm ua rau muaj kev phom sij ib puag ncig, nws siv yuav tsum tau ua tib zoo saib xyuas thiab tswj. Raws li kev lag luam textile txuas ntxiv mus ntxiv, kev siv zog kuj tseem raug tsim los tsim cov txheej txheem thiab tshuaj lom neeg uas tuaj yeem ua tiav cov txiaj ntsig zoo ib yam yam tsis muaj kev pheej hmoo ntawm kev siv sodium cyanide.