1. Sodium Carboxymethyl Cellulose
Reactive printing paste yog ib qho derivative nrog ether qauv tau los ntawm kev hloov kho tshuaj ntawm natural cellulose. Nws yog dej-soluble kua nplaum uas tuaj yeem yaj hauv dej txias thiab dej kub. Nws cov tshuaj aqueous muaj cov haujlwm ntawm kev sib txuas, thickening, dispersing, suspending thiab stabilizing.
Reactive printing paste yog ib yam khoom ntawm sodium carboxymethyl cellulose nrog rau qib siab ntawm etherification. Cov txheej txheem tshwj xeeb ua rau nws thawj pawg hydroxyl hloov pauv tag nrho, kom tsis txhob muaj cov tshuaj tiv thaiv nrog cov dyes reactive.
Raws li lub thickener ntawm luam ntawv paste, reactive luam ntawv paste tuaj yeem stabilize lub viscosity, txhim kho lub fluidity ntawm paste, txhim khu lub peev xwm hydrophilic ntawm cov xim, ua rau cov dyeing uniform thiab txo cov xim sib txawv; Nyob rau tib lub sijhawm, hauv cov txheej txheem ntxuav tom qab luam ntawv thiab dyeing, tus nqi ntxhua yog siab dua, Cov ntaub zoo li mos rau qhov kov.
2. Kev sib piv ntawm cov yam ntxwv ntawm reactive printing paste thiab sodium alginate
2.1 Paste tus nqi
Piv nrog sodium alginate, reactive luam ntawv paste muaj viscosity ntau dua, txawm tias nws siv ib leeg los yog ua ke nrog lwm cov thickeners, nws tuaj yeem txo tus nqi ntawm cov tshuaj txhuam; Feem ntau, cov active luam ntawv paste Cov koob tshuaj tsuas yog 60-65% ntawm sodium alginate.
2.2 Xim tawm los thiab hnov
Cov xim yield ntawm cov luam ntawv paste npaj nrog reactive luam ntawv paste li thickener yog sib npaug ntawm sodium alginate, thiab cov ntaub zoo li mos tom qab desizing, uas yog sib npaug rau cov khoom siv sodium alginate paste.
2.3 Paste stability
Sodium alginate yog lub ntuj colloid, uas muaj kev ua haujlwm tsis zoo rau cov kab mob, lub sijhawm luv luv ntawm cov xim muab tshuaj, thiab yooj yim rau lwj. Kev ruaj ntseg ntawm cov khoom siv sodium carboxymethyl cellulose zoo ib yam yog qhov zoo tshaj ntawm sodium alginate. Reactive printing paste cov khoom tau raug txhim kho los ntawm cov txheej txheem tshwj xeeb, thiab lawv cov electrolyte kuj zoo dua li cov khoom siv sodium carboxymethyl cellulose. Nyob rau tib lub sijhawm, lawv muaj kev sib raug zoo nrog cov tshuaj auxiliaries thiab dyes, thiab tsis yooj yim rau corrupted thiab deteriorated thaum lub sij hawm cia. Kev ruaj ntseg tshuaj yog zoo dua li sodium alginate.
2.4 Rheology (complementary)
Ob leeg sodium alginate thiab CMC yog cov kua pseudoplastic, tab sis sodium alginate muaj cov qauv viscosity tsawg thiab siab PVI tus nqi, yog li nws tsis haum rau round (paj rwb) screen printing, tshwj xeeb tshaj yog high-mesh screen printing; reactive luam ntawv paste cov khoom muaj cov qauv viscosity siab, PVI tus nqi yog li 0.5, yooj yim luam tawm cov qauv thiab kab. Kev sib xyaw ua ke ntawm sodium alginate thiab nquag luam ntawv muab tshuaj txhuam tuaj yeem ua tau raws li kev xav tau ntawm cov ntawv luam tawm ntau dua
Post lub sij hawm: Apr-03-2023