CN1170028C - Sol-gel color fixing method - Google Patents

Abstract

The present invention belongs to the technical field of chemical industry, which discloses a sol and gel color fixing method. In the sol and gel color fixing method, a combined reagent which can generate chemical reactions with a textile fiber is used as a raw material, and is used for preparing sol finishing liquid. During finishing, a textile is treated in a heat mode at the temperature of 100 to 180 DEG C, and thin, transparent and complicated network films can be formed on the inner surface and the outer surface of the fiber. Thus, the complicated network films perform the function for fixing dye on the textile; consequently, the color fastness of the textile is improved.

Description

The sol-gel color-fixing method

Technical field:

The invention belongs to chemical technology field.Be specifically related to a kind of sol-gel color-fixing method.

Background technology:

The basic principle of sol-gel technique is that metal alkoxide or inorganic salts are directly formed or form colloidal sol with fixed attention through separating through hydrolysis, makes the solute polymeric gelization then, again with gel drying, bake, remove organic principle, obtain inorganic material at last.Be mainly used in preparing on glass, superfine powder and the film at present, adopt 300～800 ℃ high-temperature roasting, when the system film, adopt smooth surfaces such as glass, metal, plastics to carry out coating as matrix, form continuous film in stromal surface, combine by Van der Waals force between film and the carrier, do not have chemical bond.It is unpractical that such technology is used on the textiles, because textiles can't bear high-temperature roasting.

Summary of the invention:

Technical problem to be solved by this invention is to overcome above-mentioned defective, designs a kind of color-fixing method, makes the dyestuff on the textiles is played fixation, improves the COLOR FASTNESS of textiles.

The invention provides a kind of sol-gel color-fixing method, this method comprises the following steps:

(1) preparation dressing liquid

Prescription:

Ethyl orthosilicate: 0%～50%;

γ-glycidyl ether oxygen propyl trimethoxy silicane: 0.1%～50%;

Ethanol: 30%～90%;

Hydrochloric acid: 0.005～1.0mol/l;

The preparation method:

1. add ethyl orthosilicate, γ-glycidyl ether oxygen propyl trimethoxy silicane and ethanol successively in three-necked bottle, stir on agitator, they are mixed, mixing speed is at 200～400 rev/mins;

2. in the mixed liquor under agitation being added drop-wise to hydrochloric acid solution 1.;

3. 2. mixed liquor at room temperature stirred 24 hours;

(2) arrangement

DYED FABRICS two is soaked two and rolled pressure 2～3kg/cm in above-mentioned dressing liquid ², the cloth after the arrangement is dried in convection oven, baked several minutes at 100～180 ℃ then.

The present invention selects for use and with textiles the reagent that chemical reaction combines can take place and make feedstock production colloidal sol, the method for sorting of this suitable textiles is padded in employing, only need textiles is carried out 100～180 ℃ heat treatment, can form the thin and transparent complex network film that constitutes by network structure on the inside and outside surface of fiber, dyestuff on the textiles is played fixation, improve the COLOR FASTNESS of textiles.

This color-fixing method is different with the fixation mechanism of existing color-fixing agent, and it is by sol-gel process, forms the thin and transparent gel film that one deck is made of inorganic network on fabric, with the dye molecule net on fabric, thereby play the effect of fixation.

Up to the present, be specificity all with the color-fixing agent of REACTIVE DYES, ACID DYES, direct dyes, and have the formaldehyde problem and look becomes problem more.And the present invention has universality for dyestuff, promptly to active, directly, inhomogeneous dyestuff such as acidity all has good tint retention, formaldehydeless, look diminishes, and can also reduce the washes after the dyeing, alleviates the pollution to environment.

Advantage of the present invention:

Compare with traditional sol-gel method craft, the present invention has the following advantages:

1. baking temperature is low, only need bake at 100～180 ℃, than low 200～600 ℃ of the baking temperature of traditional sol-gel technology;

2. adopt the matrix of rough surface, form thin and transparent complex network film in stromal surface as film forming;

3. between film and the matrix chemical bond is arranged;

Compare with existing color-fixing agent, the dressing liquid among the present invention has the following advantages:

1. for dyestuff universality is arranged, promptly to active, directly, inhomogeneous dyestuff such as acidity all has good tint retention;

2. formaldehydeless;

3. look diminishes;

4. can reduce the washes after the dyeing, alleviate pollution environment.

The specific embodiment:

(1) join ethyl orthosilicate (0%～50%), γ-glycidyl ether oxygen propyl trimethoxy silicane (0.1%～50%), ethanol (30%～90%) in the three-necked bottle successively, on agitator, stir, they are mixed, and mixing speed is at 200～400 rev/mins; Under agitation (0.005～1.0mol/l) drips of solution is added in the mixed liquor with hydrochloric acid; At room temperature stirred 24 hours.

(2) DYED FABRICS two is soaked two and rolled (pressure 2～3kg/cm in dressing liquid ²), in convection oven, dry then, baked several minutes at 100～180 ℃.

(3) DYED FABRICS is carried out the fastness test, concrete division is as follows:

1. soaping fastness test: the liquid of soaping of preparation 4g/L with the cloth specimen of 4cm*10cm and onesize calico stitching, is dipped in 1: 50 the soap lye, put into the soaping fastness tester, take out after soaping 30 minutes in 40 ℃, clean cloth specimen with distilled water, take out stitches, dry.On SF-600 type DATA COLOR color measurement and color match instrument, test then.

2. ironing fastness test: the cloth specimen of 4cm*10cm and onesize calico are fitted, and wetting with distilled water, it is heavy to make them contain the water that equates with sole mass.Use household electric iron, with being fit to one grade of cotton flatiron 15 seconds.On SF-600 type DATA COLOR color measurement and color match instrument, test then.

(4) embodiment

The explanation of colloidal sol numbering

1. direct dyes fixation

According to normal dyeing technology, with direct fast black G (dyestuff factory, Shanghai) cotton is dyeed, dye strength is respectively 2% and 3% (o.w.f).With the colloidal sol that difference is formed cloth specimen is put in order, method for sorting is referring to (2).1. carry out the soaping fastness test according to (3) then, the gained data see Table 1.

The colloidal sol of table 1. different component is to the improvement effect of direct dyes soaping fastness

	Dye strength (o.w.f)	Former state variable color (level)	Calico staining (level)
				Be untreated	2％	3	1-2
3％	3	1
			Sol A is handled		2％	4-5	3
3％	4-5	3
				Sol B is handled	2％	4-5	3
3％	4	2-3
			Colloidal sol C handles		2％	4-5	2-3
3％	4-5	2-3
				Colloidal sol D handles	2％	4-5	3
3％	4-5	2-3
			Colloidal sol E handles		2％	4-5	3
3％	4	3
				Colloidal sol F handles	2％	4	3-4
3％	4-5	3

2. ACID DYES fixation

For the tint retention of the present invention to ACID DYES better is described, we select for use the extremely low cotton of ACID DYES affinity as dyeing matrix, under solutions of weak acidity, dyeing according to direct dyes, adopt high dye strength (5%, o.w.f), with weak acid dye Lanasan Yellow CF A, Lanasan Red CF A, Lanasan Navy CF A (Clariant) dyes to cotton, and the dyeing back is directly put in order cloth specimen with the colloidal sol of different component without washing, and method for sorting is referring to (2).1. carry out the soaping fastness test according to (3) then, and the waste liquid after soaping is measured absorbance, to show the present invention to alleviating less environmental contamination, the gained data see Table 2.

The colloidal sol of table 2. different component is to the improvement effect of ACID DYES soaping fastness

	Dyestuff	The former state variable color	*Calico staining	K/S value before soaping	K/S value after soaping	The absorbance of soaping waste liquid
							Be untreated	Lanasan Red CF A	1	3-4	4.25	0.70	0.733
Lanasan Yellow CF A	1	4	5.89	0.28	1.513
						Lanasan Navy CF A		1	3	5.39	1.25	1.462
Colloidal sol C handles	Lanasan Red CF A	2	4-5	2.15	1.39								0.351
						Lanasan Yellow CF A	2-3	4-5	3.61	2.21	0.706
	Lanasan Navy CF A	2	3-4	4.13	2.42							0.472
						Colloidal sol D handles	Lanasan Red CF A	3	4-5	1.94	1.49		0.285
Lanasan Yellow CF A	3-4	4-5	4.33	3.51	0.593
							Lanasan Navy CF A	3-4	4	3.89	3.27	0.416
Colloidal sol E handles	Lanasan Red CF A	3-4	4-5	1.94	1.64								0.282
						Lanasan Yellow CF A	4	5	4.97	4.47	0.390
	Lanasan Navy CF A	3-4	4-5	4.98	4.05							0.401
						Colloidal sol F handles	Lanasan Red CF A	4	4-5	2.84	2.42		0.303
Lanasan Yellow CF A	4-5	5	4.82	4.73	0.344
							Lanasan Navy CF A	4	4-5	4.96	4.06	0.395

^*Because it is extremely low that acidity has been dyed the affinity of cotton, so be difficult for staining, gained calico staining rank is higher

3. reactive dye color fixing

To cotton dyeing, dye strength is 7% (o.w.f) with Kelon Red FN-3G (Ciba), and with the colloidal sol arrangement cloth specimen of different component, 2. method for sorting carries out the ironing fastness test according to (3) then referring to (2), and the gained data see Table 3.

The colloidal sol of table 3. different component is to the improvement effect of REACTIVE DYES ironing fastness

	The former state variable color	Calico staining
			Be untreated	5	2-3
Colloidal sol C handles	5	4
			Colloidal sol D handles	4-5	3
Colloidal sol E handles	4-5	3-4
			Colloidal sol F handles	4-5	3-4

Claims (2)

1, a kind of dressing liquid preparation method who is used for the sol-gel fixation is characterized in that this method comprises the following steps:

1. add ethyl orthosilicate, γ-glycidyl ether oxygen propyl trimethoxy silicane and ethanol successively in three-necked bottle, stir on agitator, they are mixed, mixing speed is at 200～400 rev/mins;

2. in the mixed liquor under agitation being added drop-wise to hydrochloric acid solution 1.;

3. 2. mixed liquor at room temperature stirred 24 hours;

Wherein said ethyl orthosilicate content is 0%～50%;

Can chemically combined reagent take place with fiber---γ-glycidyl ether oxygen propyl trimethoxy silicane content is 0.1%～50%;

Ethanol content is 30%～90%;

Content of hydrochloric acid is 0.005～1.0mol/l.

2,, it is characterized in that dyed textiles two is soaked two and rolls pressure 2～3kg/cm in dressing liquid according to the application of dressing liquid in the dyed textiles fixation of the method for claim 1 preparation ², the dyed textiles after the arrangement is dried in convection oven, baked several minutes at 100～180 ℃ then.