CN101074539A - Method for dyeing polyvinyl-alcohol based fabric - Google Patents

Abstract

This invention discloses one dye method for vinylon fiber-milk products. By adopting bleaching, Cibacron dye and the improvement for the post treatment, this method resolves the problem of dye difficult for vinylon fiber-milk products, it achieve the goals of high dyeing rate, stain uniform, bright full color, color fastness and small damage to the milk fiber.

Description

A kind of method for dyeing polyvinyl-alcohol based fabric

Technical field

The invention belongs to the textile dyeing and finishing technical field, particularly contain the dyeing processing technique field of milk protein fiber goods.

Background technology

Milk protein fiber is to be raw material with milk, obtains milk protein through degreasing, dehydration, purification, again through modification, make spinning solution with technology such as macromolecular compound blend copolymerization; Utilize the wet spinning device fabrication to go out the milk protein fiber of all size.Milk fibre goods energy biodegrade does not pollute the environment.It has good ABRASION RESISTANCE, coloring, sucting wet air permeability, soft smooth and anti-microbial property, and its strength ratio silk is much higher, and the anti-mould and anti-moth performance is good, has the feel as the real silk, has good heat insulating ability again simultaneously, leads moist and rapid-drying properties.The fabric of processing has the fine and smooth characteristics such as glutinous, soft, slim and graceful and ventilative of sliding, and is comfortable and easy to wear, and skin is had the effect of moistening.The suitability for industrialized production of milk fibre comes from Japan, and France and Italy have also done corresponding basic research, and China was studied the industrialization of milk fibre from the beginning of the nineties, and now existing several companies can independently produce.At present, milk fibre both domestic and external mainly is to adopt milk protein and polyethylene nitrile graft copolymerization and obtain, and the milk fibre of Heilungkiang Huaqiang Protein Fibre Co., Ltd., Nenjiang exploitation is obtained by milk protein and polyvinyl alcohol graft copolymerized copolymerization, also claim polyvinyl base milk fibre, though domestic blank has been filled up in this invention, but its colouring method never reaches a standard, because the milk fibre true qualities are light yellow, be difficult to obtain desirable whiteness, and dye uptake is low, level-dyeing property is poor, and dyeing is difficulty comparatively.Select the dyeing and finishing technology of suitable dying material and environment-friendly type to have crucial meaning to further developing of milk fibre.

Summary of the invention

The present invention is exactly the dyeing difficult problem that will solve polyvinyl base milk fibre goods, make that it reaches that dyeing rate is fast, even dyeing, color and luster full bright-coloured, COLOR FASTNESS good, to the little purpose of milk fibre damage.

The present invention mainly passes through in the dyeing, and the innovation and the control of key steps such as bleaching, dye and soap reach above purpose.In bleaching, we have selected for use oxygen to float and have reduced the multiple bleaching method that floats.By to bleaching agent, auxiliary agent, and the control of temperature etc., under few prerequisite of guaranteeing that fibre damage is less, protein content runs off, we reach bleaching effect preferably.We have selected for use based on the dyestuff of Cibacron and the dyeing and finishing technology of environment-friendly type in dyeing, have solved polyvinyl base milk fibre goods and have comprised bulk fibre, reeled yarn, tube yarn and a coloration of textile materials difficult problem.In arrangement, we have selected for use and have soaped and soft technology, make product have more usability.Dyeing general technology flow process of the present invention is, wherein, the bleaching in the pre-treatment, in dyeing and the back arrangement soap and soft technology is the inventive point of this case.

1. to bulk fibre

Dress fiber f water inlet f pre-treatment f flushing f adding assistant f adds dyestuff f and adds the soda ash f insulation f flushing f pickling f soft f oven dry of f of soaping with salt f heating and heat preservation f

3. to cheese

Metal f fitted tube f washing f water inlet f pre-treatment f fully washes f adding assistant f and adds dyestuff f and add the soda ash f insulation f flushing f pickling f soft f oven dry of f of soaping with salt f heating and heat preservation f

4. to fabric

Fabric washing f pre-treatment f fully washes f adding assistant f and adds dyestuff f and add the soda ash f insulation f flushing f pickling f soft f oven dry of f of soaping with salt f heating and heat preservation f

Description of drawings

Fig. 1 is the temperature control chart of oxidation and reducing bleach

Fig. 2 is dyeing figure

The specific embodiment

(1) pre-treatment

The milk protein fiber true qualities are light yellow, so need handle through bleaching when dyeing is especially dyed light sample, adopt the method for twice bleaching of OR.

1. oxygen floats

Embodiment 1

Hydrogen peroxide 30% 2.5g/L

Stabilizing agent 1g/L

Bleeding agent 1% (o.w.f)

Soda ash 5g/L

Defoamer 0.5g/L

Bath raio 1: 10.

Embodiment 2

Hydrogen peroxide 30% 35g/L

Stabilizing agent 5g/L

Bleeding agent 2% (o.w.f)

Soda ash 5g/L

Defoamer 0.5g/L

Bath raio 1: 25

Wherein: stabilizing agent belongs to the absorbent-type compound; Bleeding agent belongs to nonionic; Defoamer belongs to anionic.

2. reduction is floated

Embodiment 3

Reductant 2g/L

Soda ash 5g/L

Bleeding agent 2% (o.w.f)

Bath raio 1: 10

Embodiment 4

Reductant 35g/L

Soda ash 5g/L

Bleeding agent 2% (o.w.f)

Bath raio 1: 30

Wherein: reductant refers to sodium hydrosulfite, sodium thiosulfate, thiourea dioxide, a kind of or two kinds of mixtures in the TGA.

(2) dyeing

Because milk protein fiber is thinner, specific area is bigger, architectural feature after its copolymerization makes dyestuff just can be adsorbed on fiber surface quickly in the dyeing starting stage in addition, if dye selection inadequately rationally or colouring method is improper just is easy to produce the look flower, and to dyeing and COLOR FASTNESS all have a significant impact, so want adding, dyeing temperature and the programming rate of strict control auxiliary agent, generally with add auxiliary agent in batches, 1 ℃/1min heats up and is advisable.Dyestuff is with Cibacron, and DyStar is main.

Embodiment 5

Cibacron LS-2G 5％(o.w.f)

Salt 20g/L

Soda ash 20g/L

Bleeding agent 2% (o.w.f)

Levelling agent 0.4g/L

Bath raio 1: 20

Embodiment 6

Cibacron LS-RH.C. 3g/L(o.w.f)

Glauber salt 20g/L

Soda ash 15g/L

Bleeding agent 2% (o.w.f)

Levelling agent 0.4g/L

Bath raio 1: 15

Embodiment 7

Cibacron LS-GH.C. 5g/L(o.w.f)

Salt 25g/L

Soda ash 15g/L

Bleeding agent 2% (o.w.f)

Levelling agent 0.4g/L

Bath raio 1: 15

(3) post processing

Embodiment 8

Soap: soaping agent 2g/L, 90 ℃ of temperature, time 15min

Embodiment 9

Soap: soaping agent 6g/L, 90 ℃ of temperature, time 15min

Embodiment 10

Soft finish: softener 20g/L, 40 ℃ of temperature, time 45min

Embodiment 11

Soft finish: softener 120g/L, 40 ℃ of temperature, time 30min

Oven dry: 80 ℃ of low temperature

Wherein: soaping agent belongs to anionic; Softener belongs to the amido organosilicon macromolecular compound

(4) coloration result

After the dyeing, the milk protein fiber combinations color and lustre is gorgeous, and level-dyeing property and COLOR FASTNESS are good.Specific targets are as follows:

The various COLOR FASTNESS indexs of table 1 (level)

COLOR FASTNESS		Red	Yellow	Blue
					The water logging fastness	Look becomes	4-5	5	5
Wool accounts for look	5	5	5
				Cotton accounts for look		5	5	5
Crock fastness	Do	5	5						5
					Wet	5	5	5
Perspiration fastness, acidity	Look becomes	4-5	4-5						4-5
				Wool accounts for look	5	5	5
	Cotton accounts for look	5	5					5
				Perspiration fastness, alkalescence	Look becomes	4-5	4-5		5
Wool accounts for look	5	5	5
					Cotton accounts for look	5	5	5
Light fastness		4	4-5						4-5

Powerful keep ° 90%

Milk protein loss E4%.

Claims (6)

1. the colouring method of a polyvinyl base milk fibre mainly contains critical processes such as bleaching, dyeing and post processing and constitutes, and it is characterized in that having used oxidation, reduction combined bleach process at bleaching process; In dyeing course, selected for use the different Cibacron dyestuffs and the degree of depth to soap and soft technology.Wherein preferred coloring agent can be CibacronLS-2G, Cibacron LG-RH.C, CibacronLS-GH.C.

2. method according to claim 1, the prescription that it is characterized in that oxidation bleaching is: hydrogen peroxide 30%2.5～35g/L, stabilizing agent 1～5g/L commonly used, bleeding agent 1～2% (o.w.f) commonly used, soda ash 5g/L, defoamer 0.5g/L commonly used, bath raio 1: 10～25 wherein: stabilizing agent belongs to the absorbent-type compound; Bleeding agent belongs to nonionic; Defoamer belongs to the anionic defoamer.

3. method according to claim 1 and 2, the prescription that it is characterized in that reducing bleach is reductant 2～35g/L, soda ash 5g/L, bleeding agent 1～2% (o.w.f), bath raio 1: 10～30.

4. method according to claim 3 is characterized in that reductant can be a sodium hydrosulfite, sodium thiosulfate, thiourea dioxide, a kind of or two kinds of mixtures in the TGA.

5. according to claim 1 or 2 or 3 described methods, it is characterized in that comprising in the post processing soap boiling and soft technology.

6. according to claim 5 described methods, it is characterized in that the soap boiling process: soaping agent 2～6g/L, 90 ℃, 15min; Then soft, softener 20～120g/L, 40 ℃, 30～45min.

Wherein: soaping agent belongs to anionic; Softener belongs to the amido organosilicon macromolecular compound.

Images