Formula for dyeing of aromatic heterocyclic fiber material

FIELD: textile, paper.

SUBSTANCE: invention relates to the textile industry and can be implemented at dye-finishing factories. A formula is suggested to be used for dyeing aromatic heterocyclic fiber material and containing, wt %: 5-20 pigment selected fron the group including TiO2, 2[Na2O·Al2O3·3SiO2]·Na2S4, CoO·7.9Al2O3·0.5ZnO·0.13P2O5, CdS·(0.5-0.6)CdSe, CdS·(0.2-0.3)ZnS, 25-30 binding material which is a product of copolycondensation in equal portions of acrylonitrile, butyl acrylate and methacrylic acid, water and the rest.

EFFECT: aromatic heterocyclic fiber material which is more resistant to thermal oxidation and breaking load and at the same time increased fire-resistance as well as uniform and high colours of a wide colour range owing to using evironmentally friendly compounds suitable for using at textile finishing factories.

1 cl, 2 tbl, 13 ex

 

The invention relates to the textile industry and can be implemented on the lines of crease-resistant finishing dyeing and finishing production.

Known composition for dyeing pigments containing binders based on acrylate. Dyed aramid fiber can be obtained by adding to the spinning solution of copolymers of a mixture of aromatic polyamide and polyacrylonitrile in forming from a solution wet or Shamokin ways (RF Patent 2210649, MCP D06P 3/04, D06P 3/24, D06F 8/08, publ. 20.08.2003). The content of polyacrylonitrile is 1.5-20.0%, the heat treatment of the fibers in air is carried out at a temperature = 140-350°C. At temperature = 280°C, there is a tendency to a slight decrease in strength, rupture elongation and ishibashiiwata threads.

Known compositions for preprocessing prior to dyeing aramid fibres (Method of dyeing metoposaurid-benzimidazole fibers. Patent 2255160, IPC D06P 3/04, D06P 3/24, publ. 27.06.2005). The fiber is treated with a certain time in a mixture solvent (dimethylacetamide (DMAA), dimethylformamide (DMF), dimethylsulfoxide (DMSO) or a mixture thereof), low alcohol (ethyl, methyl, glycerol, ethylene glycol or other) and/or water in different ratios: a mixture of solvent/water is from 50/50 to 80/20; solvent/low alcohol from 10/90 to 80/20; the mixture solvent is/low alcohol/water 10+X)/(70-X)/20, where X varies from 0 to 75. Then the fiber is washed or not washed and dyed with disperse or cationic dyes. We offer organic nitrogen-containing polar solvents at the stage of pre-treatment before dyeing instrumental in obtaining the colors high strength aramid threads, but do not meet the requirements of ecological safety, as the toxic substances of the second class of danger, which complicates their use in the textile finishing companies.

The closest analogue to the proposed technical solution adopted for the prototype, is a composition for dyeing and finishing tervahartiala aramid material, such as fabric article "Hope" on the basis of polyamideimide (PBI) fiber contained in one of the examples (sample No. 15) describe it As the USSR №1765269 A1 (Gromov V.F., Fedorova NS Composition for pigment dyeing of cellulose-containing materials. - Publ. 30.09.92. Bull. No. 36. P.12), including organic pigment (0.1 to 0.3 wt.%); latex (2.5 to 5.0 wt.%) copolymer of vinylidenechloride with butadiene in a weight ratio of monomers of 70:30 (DHB - 70) or a latex of a copolymer of vinylidenechloride with vinyl chloride 65:35 (vhvd - 60) or 80:20 (vhvd - 80), respectively, or their mixture at a ratio of 1:1; polyethylene emulsion (2.0 to 2.5 wt.%); antimir the ATOR-based manutex RS or a mixture of starch with solvitose in the ratio of 1:1 (0,050 is 0.075 wt.%), surfactant of Prevotella WOF 100 (0,06-0,08) and water (the rest). The compositions allow you to get a solid color only when dyeing in light colors that match the content of the colorant in the impregnating suspension of 0.1-0.3%, while increasing the intensity of coloration to the level of the mid tones and the increase in the concentration of the pigment in suspension above 0.3% color fastness is sharply reduced. In addition, the impregnating suspension is not sustainable, that in the conditions of production is the cause of the buildup of coagulum on the surface of the impregnating rollers and, consequently, to neravnoe dyeing material. The applied composition contains a substance (polyethylene emulsion, manutex RS), the application of which leads to lower resistance to thermo-oxidative degradation (tervahartiala) fiber compared to the level of these properties of the original materials. The offer dyeing composition causes a decrease in the breaking load characterizing the original raw material. The presence in the manufacturing of the composition of toxic chlorinated components - latex - limits the possibility of their application in textile finishing companies.

The technical result of the proposed solutions is to eliminate these disadvantages, such as increasing resilience to mention the mini-oxidation and the breaking load of the aromatic heterocyclic fibrous material while achieving uniform and intense colors wide color gamut due to the use of environmentally adapted compounds suitable for use in textile finishing companies.

This object is achieved in that the proposed composition for dyeing aromatic heterocyclic fibrous material includes pigment dye, a binder and water, and is characterized by the fact that, as the pigment contains TiO2or 2[Na2O·Al2O3·3SiO2]·Na2S4or CoO·7,9Al2O3·0,5ZnO·0,13P2O5or CdS·(0,5-0,6)CdSe or CdS·(0,2-0,3)ZnS, a as a binder product copolycondensation in equal parts of Acrylonitrile, butylacrylate, methacrylic acid in the following ratio, wt.%:

pigment5-20
binder25-30
waterrest

The proposed pigments are readily available mineral substances and are produced by the chemical industry:

- titanium dioxide TiO2in finely dispersed form are widely used in textile printing;

- ultramarine UKH (hereinafter referred to MIND) - 2[Na2O·Al2O3·3SiO2]·Na2S4corresponds OST 6-10-404-77;

cobalt blue medium (hereinafter the C) - CoO·7,9Al2O3·0,5ZnO·0,13P2O5corresponds to THE 6-10-1320-77;

- cadmium red deep (hereinafter ACS) - CdS·(0,5-0,6)CdSe match STP 6-10-100-100-80;

- cadmium yellow light (hereinafter QL) - CdS·(0,2-0,3)ZnS match STP 6-10-100-100-80.

Binder - product copolycondensation in equal parts of Acrylonitrile, butyl acrylate, methacrylic acid under the brand name "Latex AF" - produced on an industrial scale and represents a 50%aqueous emulsion.

Significant difference between the claimed composition is the introduction of a binding agent, which in combination with resistant mineral pigment help to improve the performance properties of the colored material of the aromatic heterocyclic fiber, as well as to exclude components that pose a danger to the health of personnel in the service area of dyeing equipment.

For comparison, the technical level quality indicators and key performance characteristics in table 1 and table 2 shows the test data and the machining conditions corresponding to the prototype (example 1) and the proposed technical solution (examples 2-13). For experimental verification were taken multifilament yarn of polyamideimide (PBI) fiber Rusar; polyoxazolines complex thread Arselon and yarn Arselon, the fabric of yarns of Arselon and fabric "Hope" (proto is Pis) from PABE thread.

The composition was prepared as follows. The pigment was injected binder and added water to the desired volume is obtained by the composition of the impregnated material of the aromatic heterocyclic fiber. Conditions of impregnation, drying and heat treatment corresponded below in example 1 (prototype).

Example 1 (prototype). A sample PABI tissue "Hope" (25 g) was impregnated with the composition (in wt.%): pigment blue phtalocyanines TP (0,3); latex of a copolymer of vinylidenechloride with butadiene in a weight ratio of monomers of 70:30 DWHB-70 (2,5); polyethylene emulsion (2,5); antimigratory based manutex RS (0,075), Prevotella WOF 100 - (0,08). Bath volume 200 ml Material were stained by double impregnation with an intermediate spin and spin after impregnation of 100%, and subsequent drying in air at room temperature and heat treatment at a temperature of 150°C for 3.5 minutes

Below are examples of the implementation of the proposed technical solutions and analysis of its effectiveness. When the impregnation of the yarn and the yarn used correspondingly smaller volume of the impregnating bath at lower sample mass impregnated fibrous material.

In examples 1-2 comparison of indicators ΔR illustrates the achievement of a higher intensity of staining staining of MIND, even when the concentration of the pigment at the level of the prototype, while ognezashita the properties above the sample, processed MIND: the onset temperature of decomposition of 470°C (prototype 420°C).

In examples 3-5 complex thread Rusar paint pigment MIND within concentrations of 5.0-20.0 wt.% when the binder concentration of the drug in the impregnating composition of 30 wt.%.

In examples 6-7 complex thread Rusar paint with pigment concentration the MIND of 5.0 wt.% and a binder 25 and 27 wt.%. Examples 8-10 show the effectiveness of titanium dioxide 20%, the binder is 25-30%, and examples 11-13 - pigments KS, QC and QL (5 wt%), binder - 30%. The use concentrations of the pigment is less than 5 and more than 20 wt.% impractical: in the first case the color is not very noticeable, and the second reduced fastness to friction, increases the stiffness of the material.

The effect of increasing the concentration of the binder to increase the intensity of the color shown in examples 5-7. The decrease in the concentration of the binder is below the edge values to the recommended interval 25 wt.% not now, because it leads to poor color fastness to friction. The concentration of the binder is more than 30 wt.%, increase the stiffness of the material, the intensity of staining within the sensitivity of the eye is not changed.

The relative strength of the fibrous material (table 2) indicate the increase of the breaking load at a constant linear density integrated n the TEI and the surface density of the fabric during the dyeing of the claimed composition relative to the index for raw material, whereas the prototype, the decrease of the breaking loads in comparison with the source material up to 20% in the same processing modes.

The differential thermal analysis of tissue samples from the source material (PABI) and tissue Rusar and Arselon, painted in optimal conditions with the use of mineral pigments and binders, show that the resistance to thermooxidative degradation increased as compared with the unpainted and painted prototype samples (examples 1-13).

The onset temperature of decomposition of the original and painted prototype fibrous material is 420-450°C (with heating in the air at a speed of 5°C/min). The onset temperature of decomposition of the samples, painted the claimed composition - 470-527°C.

The intensity of staining was evaluated by the deviation ΔR of the reflectance of the painted sample from the values for the original unpainted fibrous material and expected values of the reflection coefficients in the region of maximum absorption in the spectrum of the dye. The determination was carried out on the instrument math-56.

Test the color fastness to physical and chemical influences and breaking load was determined by the techniques given in the description of the prototype. Roveto dyeing was evaluated visually.

Tervehdysteksti material characteriza and indicators:

Table 1
Examples of compositions of the proposed technical solution and prototype
# exampleFibrous materialComposition, wt.%
PigmentBinder*Water
1 (prototype)PBIBlue phtalocyanines TA, 0,32,594,6
2PBIMIND 0,330,069,7
3RusarMIND 5,030,065,0
4RusarThe MIND of 20.030,050,0
5RusarMIND 7,530,062,5
6RusarMIND 5,025,070,0
7RusarMIND 5,027,068,0
8ArselonTiO220,030,050,0
9ArselonTiO220,025,055,0
10ArselonTiO220,027,053,0
11ArselonKS 5,030,065,0
12ArselonQC 5,030,065,0
13ArselonQOL 5,030,065,0
Note. * Note the re 1 in addition to the binder and pigment has 3 components (see description of the prototype).

- loss of mass by heating the material in air on the device Derivatograph "MOM" with a rate of 5°C/min up to 600°C;

the onset temperature of decomposition of the polymer fibers;

the decay time after removal of the flame.

Composition for dyeing aromatic heterocyclic fibrous material containing pigment dye, a binder and water, characterized in that as a pigment it contains TiO2or 2[Na2O·Al2O3·3SiO2]·Na2S4or CoO·7,9Al2O3·0,5ZnO·0,13P2O5or CdS·(0,5-0,6)CdSe or CdS-(0,2-0,3)ZnS, and as a binder - product copolycondensation in equal parts of Acrylonitrile, butyl acrylate, methacrylic acid in the following ratio, wt.%:

pigment5-20
binder25-30
waterrest



 

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