Dacron is with the method for bleaching of bleaching liquid and dacron
Technical field
The present invention relates to a kind of fabric with the method for bleaching of bleaching liquid and fabric, relate in particular to a kind of dacron with the method for bleaching of bleaching liquid and dacron.
Background technology
In weave dyeing and finishing technique, fabric is through after kiering, and on fabric, most of natural and artificial impurity is removed, and capillary effect significantly improves, and can satisfy the processing request of some kinds.But to BLEACHED FABRIC and light figured cloth, painting cloth class bright in colour, also need to improve whiteness, therefore need further remove the pigment on fabric, make fabric pure whiter.Though fabric is through kiering besides, especially the atmospheric steam boiling is practiced, and still has partial impurities such as cotton seed hulls to fail entirely to remove, and by the effect of bleaching agent, these impurity can remove fully.
Cotton dyeing factory is widely used the oxidative bleaches such as hypochlorite, hydrogen peroxide.To cotton and cotton type fabric bleaching, peracid compound such as perboric acid are received, peracetic acid, sodium percarbonate etc. are also even application, and sodium chlorite is multiplex in the bleaching of synthetic fiber and BLENDED FABRIC thereof.Usually hypochlorite bleaching is floated referred to as chlorine, hydrogen peroxide bleaching floats referred to as oxygen, and chlorite bleaching floats referred to as the Asia.
(1) hypochlorite bleaching
Hypochlorite commonly used has two kinds of bleaching powder and clorox.Bleaching powder is that chlorine and calcium hydroxide effect form, and contains as leading to chlorine in milk of lime, can making the bleaching powder that effective composition doubles; Logical chlorine can make clorox in soda bath.In bleaching powder and bleaching powder, active ingredient is calcium hypochlorite, and total effect is not as clorox.The present larger normal own clorox of making of cotton dyeing factory, or buy clorox near chemical plant for bleaching, bleaching powder is difficult to obtain the regional small-sized printing and dyeing mill of clorox for small city or rural area.The bleaching powder price is more expensive, uses less.
The sodium hypochlorite bleaching technology and equipment is simpler, and is multiplex in COTTON FABRIC and victoria blended spinning fabric bleaching, sometimes also is used for the polyester cotton bleaching.But can not be used for the bleaching of the protein fibres such as silk, wool, dimension sodium chlorate has destruction to protein fibre, and makes the fiber yellowing.
(2) hydrogen peroxide bleaching
Hydrogen peroxide also claims hydrogen peroxide.Fabric whiteness with hydrogen peroxide bleaching is better, and coloured light is pure, is difficult for yellowing during storage, is widely used in the bleaching of cotton type fabric.Oxygen floats to float than chlorine larger adaptability.
(3) chlorite bleaching
Great advantage when sodium chlorate is used for the COTTON FABRIC bleaching is under the condition of not damaging fiber, can destroy pigment and impurity.Sodium chlorite is again the good bleaching agent of chemical fibre, and the fabric that the retention of whiteness of BLEACHED FABRIC floats than chlorine and oxygen floats is good, but the sodium chlorite price is more expensive, and is strong to metal protection, need with titanium or titanium alloy etc materials, and the poisonous ClO of generation in process floated in the Asia
2Gas, equipment need have good sealing, therefore is subject in the use certain limitation.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of dacron with the method for bleaching of bleaching liquid and dacron.The method flow process is simple, applicable large production; Less to the fabric strength damage, environmental protection.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions:
A kind of dacron bleaching liquid is comprised of following components in mass portion:
Potassium borate 0.2-0.6 part;
Diethylenetriamine pentamethylenophosphonic acid seven sodium salt 0.5-1.5 parts;
Acrylic acid maleic acid 0.5-1.5 part;
1,5-anhydrous grape sugar alcohol 0.5-1.5 part;
4-(2-nonanoyl oxygen base oxethyl ketonic oxygen base) benzene sulfonic acid sodium salt 1-3 part;
Tetraacetyl ethylene diamine 0.2-0.6 part;
NaOH 1.5-7.5 part;
Hydrogen peroxide 2-8 part;
1000 parts, water.
Adopt the general method in this area, above-mentioned each raw material is dissolved in the water, mix and to make this dacron bleaching liquid.
The below is the basic introduction of part material of the present invention, for NaOH, hydrogen peroxide and the water of this area routine, does not obviously need further to be explained again.
Potassium borate, English name: Potassium borate.CAS accession number: 1332-77-0.
Diethylenetriamine pentamethylenophosphonic acid seven sodium salts, No. CAS: 68155-78-2.Molecular structural formula, as follows:
The acrylic acid maleic acid is called for short AA/MA, No. CAS: 26677-99-6.
1,5-anhydrous grape sugar alcohol, another name: 1,5-acid anhydride-D-D-sorbite, CAS accession number: 154-58-5, English name: D-Glucitol.
4-(2-nonanoyl oxygen base oxethyl ketonic oxygen base) benzene sulfonic acid sodium salt, molecular structural formula is as follows:
4-(2-nonanoyl oxygen base oxethyl ketonic oxygen base) benzene sulfonic acid sodium salt, molecule is comprised of two parts, and the one end is long nonpolar hydrocarbon chain, i.e. a hydrophobic group; The other end is a shorter polar group, and namely hydrophilic group, be a kind of surfactant of benzenesulfonates.
Tetraacetyl ethylene diamine, No. CAS: 10543-57-4, No. EC: 234-123-8, be called for short NOBS, English name: N, N, N', N'-Tetraacetylethylenediamine.
Boron compound potassium borate and chelating agent diethylenetriamine pentamethylenophosphonic acid seven sodium salts, acrylic acid maleic acid, 1, the synergies such as 5-anhydrous grape sugar alcohol, can act in hydrogen peroxide and free metal, catch trace metal ion, improve in bleaching process hydrogen peroxide at Stability in solution, thereby can improve to a greater degree bleaching effect of the present invention.Amazing is that the bleach-activating 4-in the present invention (2-nonanoyl oxygen base oxethyl ketonic oxygen base) benzene sulfonic acid sodium salt, the composite use of tetraacetyl ethylene diamine can further improve bleaching effect, and can effectively suppress the breakage of fabric and fade.
Dacron bleaching liquid of the present invention can adopt the conventional method of this area that fabric is bleached, as filling-steaming process, pressurization boiling process, the similar approach such as infusion process in 60-100 ℃ of scope.
Further,
The present invention also provides a kind of method for bleaching of dacron, comprises padding bleaching liquor, decatize and water-washing step,
Wherein, the described bleaching liquor that pads in the bleaching liquor step adopts above-mentioned dacron bleaching liquid.
Preferably,
At room temperature, pad bleaching liquor, at 95-100 ℃ of decatize 45-60min, then wash 20-60min.
The advantage of technical solution of the present invention is mainly reflected in:
Adopt bleaching liquid of the present invention that dacron is bleached, bleaching process is simple, can be suitable for large production, and less to the fabric strength damage, bleaching effect is good, and can effectively suppress the breakage of fabric.
The specific embodiment
Embodiment 1
The dacron preparation of bleaching liquid
Table 1: dacron is with bleaching liquid formula table unit: kilogram
Press the corresponding data of table 1, take each raw material.Under room temperature, with potassium borate, diethylenetriamine pentamethylenophosphonic acid seven sodium salts, acrylic acid maleic acid, 1,5-anhydrous grape sugar alcohol, 4-(2-nonanoyl oxygen base oxethyl ketonic oxygen base) benzene sulfonic acid sodium salt and tetraacetyl ethylene diamine are dissolved in the water, add again NaOH and hydrogen peroxide, mix, can make described dacron bleaching liquid.
Comparative Examples 1
Press the corresponding data of table 1, take each raw material, mix, can make the dacron bleaching liquid.
Comparative Examples 2
Press the corresponding data of table 1, take each raw material, mix, can make the dacron bleaching liquid.
Comparative Examples 3
Press the corresponding data of table 1, take each raw material, mix, can make the dacron bleaching liquid.
Embodiment 2
The method for bleaching of dacron
Under room temperature, the dacron that embodiment 1 is made pads dacron with bleaching liquid, with ironer mangle to 100% pick-up, and then at 100 ℃ of decatize 50min, last normal temperature washing 30 minutes, drying.
Comparative Examples 4
Under room temperature, the dacron that Comparative Examples 1 is made pads dacron with bleaching liquid, with ironer mangle to 100% pick-up, and then at 100 ℃ of decatize 50min, last normal temperature washing 30 minutes, drying.
Comparative Examples 5
Under room temperature, the dacron that Comparative Examples 2 is made pads dacron with bleaching liquid, with ironer mangle to 100% pick-up, and then at 100 ℃ of decatize 50min, last normal temperature washing 30 minutes, drying.
Comparative Examples 6
Under room temperature, the dacron that Comparative Examples 3 is made pads dacron with bleaching liquid, with ironer mangle to 100% pick-up, and then at 100 ℃ of decatize 50min, last normal temperature washing 30 minutes, drying.
Test case
To the embodiment 2 after bleaching and the dacron of Comparative Examples 4-6, carry out the test of whiteness and tearing strength.
Concrete method of testing is as follows:
Detect whiteness according to FZ/T50013-2008 " cellulose chemistry fibre whiteness test method ".
Tear tester test tearing strength with Elmendorf, with a specimen two ends clamping that is of a size of 6.5cm * 10cm, the otch of a 2cm is vertically cut at the position therebetween, tearing to the shown maximum grams of 4.5cm place's this point of measurement, measure 3 times, average, and with the measured value of this mean value divided by undressed sample, its quotient is tearing strength.Tearing strength is larger, illustrates that the Strength retention of fabric is better, and bleaching process is less to the damage of fabric.
Test data sees the following form 2.
Table 2: test data table
Test event |
Embodiment 2 |
Comparative Examples 4 |
Comparative Examples 5 |
Comparative Examples 6 |
Whiteness, % |
88 |
75 |
72 |
78 |
Tearing strength, % |
99.0 |
91.2 |
90.4 |
94.6 |
Before the dacron that adopts in the present invention, bleaching, whiteness is 46%.
By table 2 data relatively, can obviously draw, the bleaching effect of embodiment 2 and tearing strength obviously are better than Comparative Examples 4-6.