Carboxymethyl selulose (Sodium Carboxymethyl Cellulose) yitwa CMC, ni ubuso bukora bwa colloid polymer compound, ni ubwoko bwimpumuro nziza, uburyohe, butagira ubumara bwamazi-solubose ya selile, bukozwe mubudodo bwinjiza hakoreshejwe imiti-miti. Ububiko bwa selile selile yabonetse ni ubwoko bwa selile, kandi umunyu wa sodiumi ukoreshwa muri rusange, bityo izina ryayo ryuzuye rigomba kwitwa sodium carboxymethyl selulose, aribyo CMC-Na.
Kimwe na methyl selulose, carboxymethyl selulose irashobora gukoreshwa nka surfactant kubikoresho byangiritse kandi nkibikoresho byigihe gito kubikoresho byangiritse.
Sodium carboxymethyl selulose ni polyelectrolyte ya sintetike, bityo irashobora gukoreshwa nka dispersant na stabilisateur kugirango ibishishwa byangiritse kandi bishoboke, kandi nubundi buryo bwigihe gito bukora neza. Ifite ibyiza bikurikira:
1.
2. Kubera ko carboxymethyl selulose ari anionic polymer electrolyte, irashobora kugabanya imikoranire hagati yuturemangingo nyuma yo kwamamazwa hejuru yuduce, kandi ikagira uruhare mu gukwirakwiza no gukingira indwara, bityo bikazamura ubwinshi nimbaraga zibicuruzwa no kugabanya nyuma yo gutwikwa. Inhomogeneité yimiterere yinzego;
3. Gukoresha carboxymethyl selulose nka binder, nta ivu rimaze gutwikwa, kandi hariho ibintu bike bishonga bike, bitagira ingaruka kubushyuhe bwo gukoresha ibicuruzwa.
Ibiranga ibicuruzwa
1. Irashobora kubikwa igihe kirekire itangirika, kandi nayo irahagaze munsi yubushyuhe buke nizuba. Ariko, kubera ubushyuhe bwihuse bwihuse, acide na alkalinity yumuti uhinduka. Bitewe nimirasire ya ultraviolet na mikorobe, bizanatera hydrolysis cyangwa okiside, ubwiza bwumuti buzagabanuka, ndetse nigisubizo cyangiritse. Niba igisubizo gikeneye kubikwa igihe kirekire, imiti igabanya ubukana nka formaldehyde, fenol, aside benzoic, ibinyabuzima bya mercure, nibindi bishobora gutoranywa.
2. CMC ni kimwe nizindi polymer electrolytite. Iyo ishonga, ibanza kubyara ikintu cyo kubyimba, kandi ibice bikomatanya kugirango bigire firime cyangwa viscose, bigatuma bidashoboka gutatana, ariko bigashonga buhoro. Kubwibyo, mugihe utegura igisubizo cyamazi yacyo, niba ibice bishobora guhanagurwa mbere, igipimo cyo gusesa gishobora kwiyongera cyane.
3. CMC ni hygroscopique. Mu kirere, impuzandengo y'amazi ya CMC yiyongera hamwe no kwiyongera k'ubushyuhe bwo mu kirere kandi bikagabanuka no kwiyongera k'ubushyuhe bwo mu kirere. Iyo ubushyuhe buringaniye bwubushyuhe bwicyumba ari 80% –50%, amazi aringaniye ari hejuru ya 26%, nibicuruzwa byamazi 10% cyangwa munsi yayo. Kubwibyo, gupakira ibicuruzwa no kubika bigomba kwitondera kutagira ubushuhe.
4. Zinc, umuringa, isasu, aluminium, ifeza, icyuma, amabati, chromium nindi myunyu iremereye irashobora kugusha igisubizo cyamazi ya CMC. Usibye umunyu wa acetate ushingiye ku munyu, imvura irashobora gukomeza gushonga muri hydroxide ya sodium cyangwa hydroxide ya amonium. .
5. Acide kama cyangwa organic organique nayo izatera imvura kugisubizo cyibicuruzwa. Imvura igwa iratandukanye n'ubwoko bwa acide. Mubisanzwe, imvura ibaho mugihe pH iri munsi ya 2.5, kandi irashobora kugarurwa nyuma yo kutabogama hamwe na alkali.
6. Mu myunyu nka calcium, magnesium nu munyu wameza, ntabwo bigira ingaruka yimvura kumuti wa CMC, ariko bigira ingaruka kugabanya ubukonje.
7.
8. xylene, amavuta yintoki, nibindi birashobora guhinduka mugihe cyamasaha 24
Igihe cyo kohereza: Ugushyingo-07-2022