sulfur dub 240%yog ib lub siab molecular compound uas muaj leej faj ntau, nws cov qauv muaj disulfide bonds thiab polysulfide bonds, thiab nws yog heev unstable. Tshwj xeeb, polysulfide daim ntawv cog lus tuaj yeem oxidized rau sulfur oxide los ntawm cov pa oxygen hauv huab cua nyob rau hauv qee qhov kub thiab av noo, thiab ntxiv cuam tshuam nrog cov dej molecules hauv huab cua los tsim sulfuric acid, yog li txo lub zog ntawm cov xov paj, fiber ntau brittleness, thiab tag nrho cov fibers yog embroidered rau hauv hmoov thaum loj. Vim li no, txhawm rau txo lossis tiv thaiv kev puas tsuaj fiber ntau tom qab dyeing nrog vulcanized dub dye, cov ntsiab lus hauv qab no yuav tsum tau sau tseg:
① Tus nqi ntawm vulcanized dub dye yuav tsum raug txwv, thiab tus nqi ntawm mercerized tshwj xeeb xim dye yuav tsum tsis txhob ntau tshaj 700g / pob. Vim tias qhov ntau ntawm cov dyeing yog siab, lub caij nyoog ntawm brittleness yog loj, thiab dyeing ceev yuav txo, thiab kev ntxuav yog nyuaj dua.
② Tom qab dyeing, nws yuav tsum tau ntxuav tag nrho kom tsis txhob ntxuav tsis huv, thiab cov xim ntab ntawm cov xov paj yog yooj yim rau decompose rau hauv sulfuric acid thaum lub sij hawm cia, uas ua rau cov fiber ntau nkig.
③ Tom qab dyeing, urea, soda tshauv thiab sodium acetate yuav tsum tau siv los tiv thaiv brittleness.
④ Cov xov paj yog boiled nyob rau hauv dej huv ua ntej dyeing, thiab lub embrittlement degree ntawm xov dyed nyob rau hauv dej huv yog zoo dua li ntawm lye tom qab dyeing.
⑤ Cov xov paj yuav tsum tau qhuav rau lub sij hawm tom qab dyeing, vim hais tias cov xov paj ntub dej yog ib qho yooj yim rau cua sov hauv cov txheej txheem pawg, kom cov ntsiab lus ntawm cov xov paj los tiv thaiv brittleness tus neeg sawv cev raug txo, pH tus nqi yog txo, uas yog tsis conducive rau anti- brittleness. Tom qab ziab cov xov paj, nws yuav tsum tau txias ib txwm, kom qhov kub ntawm cov xov paj tuaj yeem ntim tau ua ntej poob rau hauv chav tsev kub. Vim tias nws tsis txias tom qab ziab thiab ntim tam sim ntawd, cov cua sov tsis yooj yim rau kev faib tawm, uas ua rau kom lub zog rau cov decomposition ntawm cov xim thiab cov kua qaub, ua rau muaj peev xwm ntawm cov fiber ntau kom nkig.
⑥ Kev xaiv cov tshuaj tiv thaiv-nkig-sulphur dub dyes, xws li dyes tau ntxiv rau formaldehyde thiab chloroacetic acid thaum tsim khoom, qhov tshwm sim methyl-chlorine vulcanized los tiv thaiv brittle-dub, yog li ntawd cov oxidized sulfur atoms yooj yim dhau los ua lub xeev ruaj khov, uas tuaj yeem tiv thaiv oxidation ntawm sulfur atoms los tsim cov kua qaub thiab nkig fiber ntau.
Post lub sij hawm: Jan-22-2024