CN101250823A

CN101250823A - Method for improving deep dyeing of dacron dispersed dye under normal pressure

Info

Publication number: CN101250823A
Application number: CNA2008100352448A
Authority: CN
Inventors: 陆大年; 王娟娟
Original assignee: Donghua University
Current assignee: Donghua University
Priority date: 2008-03-27
Filing date: 2008-03-27
Publication date: 2008-08-27

Abstract

The invention relates to a method for improving dispersion dye deep dyeing of polyester fiber in the normal pressure condition, which comprises the following steps: (1) charging aromatic ester which is provided with reaction group in the polyester cotton dye dye-bath, dyeing in the normal pressure condition with reasonable dyeing technique parameter, (2) testing dye-uptake percentage and K/S value after dyeing. The method improves dispersion dye deep dyeing of polyester fiber in the normal pressure condition effectively, which has the advantages of low dyeing temperature and little energy consumption.

Description

A kind of method that improves deep dyeing of dacron dispersed dye under normal pressure

Technical field

The invention belongs to the terylene field, particularly relate to a kind of method that improves DISPERSE DYES dye-uptake under the terylene condition of normal pressure.

Background technology

Terylene is a kind of hydrophobic thermoplastic fibre, as can be known, except end group, does not have hydrophilic radical in the fiber molecule from its molecular structure, does not also have strong polar group, has only the less ester group of polarity, lacks the active group of energy and dyestuff generation combination.

The nonionic dye that polyster fibre is suitable lower with solubility, hydrophobicity is stronger.Promptly use disperse dyes dyeing, except the less dyestuff of some molecular weight, yet have other problem.Mainly be because the terylene molecules align is tightr, only have less space in the fiber.When temperature was low, it is less that molecular thermalmotion changes the amplitude of its position, and under the condition of humidity, polyster fibre can increase the space by violent swelling as cotton fiber again, so dye molecule is difficult to be penetrated into fibrous inside.

In view of the dissolution characteristics of the architectural characteristic and the DISPERSE DYES of terylene molecule, DISPERSE DYES below 100 ℃ or the dyeing rate that boils when dying slow, dye-uptake is low, is difficult to dye dark color, can not the desirable Color of endowing terylene.Terylene traditional dyeing technology main method is a high-temperature and high pressure dyeing process.But this colouring method not only exists cost and energy consumption height, and, also be difficult to adapt to a large amount of at present multicomponent coloration of textile materials problems that occur.On the other hand, traditional terylene normal pressure carrier dyeing technology remains in many problems, needs to seek a kind of new method and new technology that improves deep dyeing of dacron dispersed dye under normal pressure.

Summary of the invention

The purpose of this invention is to provide a kind of method that improves deep dyeing of dacron dispersed dye under normal pressure, this method is dyed mechanism and the similar principle that mixes according to helping of methyl methacrylate, in the terylene dyeing at normal pressure, use as new support with aromatic ester, solve the engrain problem of terylene with reactive group.

A kind of method that improves deep dyeing of dacron dispersed dye under normal pressure of the present invention, step comprises:

(1) in terylene and the dye bath of polyester-cotton blend DISPERSE DYES, adds aromatic ester with reactive group as carrier, rationally control dyeing (consumption of auxiliary agent, dye strength, carrier concn, dyeing temperature, time, bath raio, dye bath pH value etc.) dyes under condition of normal pressure;

(2) dye uptake and K/S value are measured in the dyeing back.

Described aromatic ester with reactive group is to have the little aromatic ester of reactive group, be selected from phenyl acrylate, phenyl methacrylate, in phenyl methacrylate and derivative, vinyl benzoate, methyl benzoic acid vinyl acetate, P-hydroxybenzoic acid vinyl acetate and the derivative thereof one or more, consumption is 2 ~ 10% (v/v), preferred phenyl acrylate, preferred 4% (v/v) of consumption.

Described auxiliary agent is emulsifying agent and initator, and wherein emulsifying agent is one or more in the nonionic surface active agent of paregal O, OP series, TX series, tween series, emulsifying agent consumption 1 ~ 6g/L, preferred 4g/L;

Described initator be hydrogen peroxide, potassium peroxydisulfate, ammonium persulfate, with the composite redox initiator of sodium sulfite, sodium hydrogensulfite in one or more, initiator concentration 2 ~ 10% (v/v), preferred hydrogen peroxide, concentration 10%.

Described dye strength 1 ~ 5% (o.w.f.), preferred coloring agent concentration 2% (o.w.f.), 60 ~ 98 ℃ of dyeing 40 ~ 75min, bath raio 45 ~ 55: 0.5 ~ 1.5, dye bath pH value is to regulate the pH value to pH 5.5 ~ 6 with acetum.

Principle of the present invention is to adopt the aromatic ester with reactive group to dye carrier as helping.Under the terylene condition of normal pressure in the disperse dyeing process, aromatic ester with reactive group mainly plays following two aspect effects: during (1) dyeing, the structure of aromatic ester itself with reactive group is similar to terylene, terylene there is bigger affinity, can be adsorbed by fiber rapidly, be diffused into fibrous inside, make the reaction force attenuation between fiber molecule, short texture, increase the mobility of fiber macromolecular chain, make fibre structure lax, thus the increased fiber free volume, vitrification point is reduced, improve the dyeing rate of dyestuff and in intrastitial diffusion rate; (2) aromatic ester with reactive group is adsorbed on fiber surface and is initiated polymerization, and forms the cooperation film with DISPERSE DYES and unreacted aromatic ester monomer, thereby improves the dye-uptake and the dyefastness of dyestuff.

Beneficial effect of the present invention:

(1) technology is simple, and wherein methyl methacrylate contains reactive group as a kind of aliphatic ester in the molecular structure, plays plasticising during dyeing and at the fabric face filming function;

(2) dyeing temperature is low, can reach Color preferably in 98 ℃ of dyeing of normal pressure;

(3) energy resource consumption is low.

The specific embodiment

Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.

Embodiment 1

Synthesizing of phenyl acrylate

The ratio of calcium chloride and ice was 6: 5 o'clock during cryosel was bathed, when reaching-20 ℃ condition, phenol (18.61mL, 212mmol) and triethylamine (61.12mL, 424mmol) be dissolved in oxolane (200mL) solution, and acryloyl chloride (17.2,212mmol) in 60 minutes, dropwise add, with afterreaction 6 hours, stir in the course of reaction.

Embodiment 2

Phenyl acrylate is to terylene DISPERSE DYES (the blue C3R of Tuo Lasi) dyeing research

Dyeing is: add phenyl acrylate, auxiliary agent and dyestuff under the room temperature, and regulate the pH value with acetum, 1.5 ℃/min is warmed up to 98 ℃, is incubated 60 minutes, and 1 ℃/min cools to 60 ℃ then, reduction cleaning, washing.

At dye strength 2% (o.w.f.), peregal consumption 2g/L, bath raio 50: 1 in the dye liquor of pH=6, dyes to terylene by dyeing.With the K/S value of computer color measurement and color match instrument (Datacolor Spectraflash plus) mensuration terylene, be to reduce test error, every part of specimen is got multiple spot and is surveyed its K/S value respectively, below 0.01, gets its mean value until error.

Orthogonal test

Each factor level is as follows:

Hydrogen peroxide concentration A1, A2, A3:6% (v/v), 8% (v/v), 10% (v/v);

Phenyl acrylate concentration B1, B2, B3:4% (v/v), 6% (v/v), 8% (v/v);

Dyeing temperature C1, C2, C3:60 ℃, 90 ℃, 98 ℃;

Time D 1, D2, D3:40min, 60min, 75min;

Annotate: v/v is a volume ratio

Select L for use ₉(3 ⁴) table analyzes, i.e. 4 factors, 3 levels, the orthogonal experiments table sees Table 1.

Table 1 orthogonal experiments

Can be analyzed by table 1 that to obtain optimal case be A3B1C3D2, promptly hydrogen peroxide concentration is 10% (v/v), and phenyl acrylate concentration is 4% (v/v), and dyeing temperature is 98 ℃, and the time is 60min.

The dyeing prescription: according to optimal case, dye strength is 2% (o.w.f.), and phenyl acrylate concentration is 4% (v/v), and hydrogen peroxide concentration is 10% (v/v), paregal O consumption 4g/L, pH=5.5～6, bath raio 50: 1.

Embodiment 3

Phenyl acrylate is to the influence of terylene, polyester-cotton blend DISPERSE DYES dye uptake and K/S value

At dye strength 2% (o.w.f.), the consumption 4% (v/v) of phenyl acrylate, the consumption 10% (v/v) of hydrogen peroxide, paregal O consumption 4g/L, bath raio 50: 1 is in the dye liquor of pH=5.5, terylene, polyester-cotton blend are dyeed the fully washing of dyeing back by dyeing.With the K/S value of computer color measurement and color match instrument (Datacolor Spectraflash plus) mensuration terylene, be to reduce test error, every part of specimen is got multiple spot and is surveyed its K/S value respectively, below 0.01, gets its mean value until error.Dye uptake is pressed the raffinate method, draw dye preceding, dye back each 1mL of liquid in the volumetric flask of 10mL, add the acetone of 5mL, and add water to scale, measure absorbance, calculate dye-uptake.Dye-uptake (%)=(1-A dyes back liquid/A and dyes preceding liquid) * 100% gained data see Table 2, table 3.

Table 2 phenyl acrylate is to the influence of terylene DISPERSE DYES dye uptake and K/S value

Table 3 phenyl acrylate is to the influence of polyester-cotton blend DISPERSE DYES dye uptake and K/S value

Claims

1. method that improves deep dyeing of dacron dispersed dye under normal pressure, step comprises:

(1) adding is as the aromatic ester with reactive group of carrier in terylene and the dye bath of polyester-cotton blend DISPERSE DYES, and rationally the dyeing parameter dyes under condition of normal pressure;

(2) dye uptake and K/S value are measured in the dyeing back.

2. the method for raising deep dyeing of dacron dispersed dye under normal pressure according to claim 1 is characterized in that: the consumption that described dyeing parameter is an auxiliary agent, dye strength, dyeing temperature, time, bath raio, dye bath pH value.

3. the method for raising deep dyeing of dacron dispersed dye under normal pressure according to claim 1, it is characterized in that: described aromatic ester with reactive group is selected from phenyl acrylate, phenyl methacrylate, in phenyl methacrylate and derivative, vinyl benzoate, methyl benzoic acid vinyl acetate, P-hydroxybenzoic acid vinyl acetate and the derivative thereof one or more, and consumption is 2 ~ 10% (v/v).

4. the method for raising deep dyeing of dacron dispersed dye under normal pressure according to claim 3 is characterized in that: described aromatic ester with reactive group is a phenyl acrylate, consumption 4% (v/v).

5. the method for raising deep dyeing of dacron dispersed dye under normal pressure according to claim 2, it is characterized in that: described auxiliary agent is emulsifying agent and initator, wherein emulsifying agent is one or more in the nonionic surface active agent of paregal O, OP series, TX series, tween series, emulsifying agent consumption 1 ~ 6g/L;

Described initator be hydrogen peroxide, potassium peroxydisulfate, ammonium persulfate, with the composite redox initiator of sodium sulfite, sodium hydrogensulfite in one or more, initiator concentration 2 ~ 10% (v/v).

6. the method for raising deep dyeing of dacron dispersed dye under normal pressure according to claim 5 is characterized in that: described emulsifying agent consumption 4g/L, initator is a hydrogen peroxide, concentration 10% (v/v).

7. the method for raising deep dyeing of dacron dispersed dye under normal pressure according to claim 2, it is characterized in that: described dye strength 1 ~ 5% (o.w.f.), 60 ~ 98 ℃ of dyeing 40 ~ 75min, bath raio 45 ~ 55: 0.5 ~ 1.5, dye bath pH value is to regulate the pH value to pH 5.5 ~ 6 with acetum.

8. the method for raising deep dyeing of dacron dispersed dye under normal pressure according to claim 7 is characterized in that: described dye strength is 2% (o.w.f.).