The application process of green peel of walnut extract in black is woolen dyed
Technical field
The present invention relates to the method that a kind of plant extracts dyes to wool, the method for specifically dying the black wool with green peel of walnut water extract.
Background technology
Chemical dye is applied to the dyeing of all kinds of textile fibers; For the mankind provide riotous with colour lining, clothes; But chemical dye mainly is to be raw material with the primary chemical material that fractionation from coal tar or petroleum derivative is come out; Under HTHP, carry out the number of chemical prepared in reaction and form, in its production process, can produce many carcinogens.These poisonous or environmentally harmful materials produce with use in understand unavoidably and come down in torrents in river, pond or evaporate in the air, environment is polluted, some also can make the people suffer from skin disease, and human body is damaged.Therefore, on July 15th, 1994, German Government is first with the legislation form, issued forbid producing, use and sell contain and can decomposite with benzidine as representative 20 surplus the decree of dyestuff of kind of carcinogenic aromatic amine compounds, other countries are response one after another also.Avoid producing, using the forbidding dyestuff and seek its substitute and become irresistible trend.
Summary of the invention
Technical problem to be solved by this invention is, the application process of a kind of green peel of walnut extract in black is woolen dyed is provided,
Utilize the green peel of walnut extract, with FeSO
4.7H
2O is a mordant, and wool is dyed black, for producing green textiles a kind of approach is provided.
Technical scheme of the present invention is following:
A kind of method of dying the black wool with walnut peel extract is characterized in that adopting following steps:
(1), preparation green peel of walnut extract: take by weighing green peel of walnut powder 50~100g and place container, add 500~1000ml solvent, in 40~90 ℃ of following water-bath extraction 12~24h, get extract, the filtrating that suction filtration obtains is the green peel of walnut extract; Wherein solvent for use is distilled water, methyl alcohol, absolute ethyl alcohol or the mixture of two or more arbitrary proportions wherein;
(2), dyeing: with the FeSO of 0.5~5.0g wool and wool weight 4~12%
4.7H
2The O mordant places 40ml distilled water, behind 30~50 ℃ of following mordant dyeing 30~60min, takes out;
(3), wool after (2) mordant dyeing that obtains of step is put in the dye bath that the pyrogallic acid by the green peel of walnut extract of 20~60ml step (1) preparation and wool weight 1~6% is made into; Regulating dye bath pH is 4~6; Be warming up to 50~85 ℃ then, stir dyeing 10~70min down.
FeSO
4.7H
2The preferable amount of O is 8% of a wool weight.
In (1) step, the wool mordant dyeing time is preferably 30min; In (2) step, dyeing time is preferably 70min.
In (1) step, the mordant dyeing temperature is preferably 40 ℃; In (2) step, dyeing temperature is preferably 70 ℃.
In (3) step, green peel of walnut extract consumption is preferably 30ml, and the pyrogallic acid consumption is preferably 4% of wool weight.
In (3) step, dye bath pH is preferably 5.5.
Good effect of the present invention is:
Vegetable colour is the pigment that extracts the root, stem, leaf, flower from plant etc.; Derive from plant fully, have the advantage that synthetic dyestuffs can't be reached, as nontoxic pollution-free, with good, the soft nature of color of Environmental compatibility; And some also has medical care effect, and is better with the human body compatibility.Simultaneously, wool belongs to natural protein fibre, also can be referred to as green fiber, and it has advantages such as good springiness, hygroscopicity is strong, warmth retention property good, gloss is soft, is one of textile industry most important material.Utilizing vegetable colour that wool fabric is dyeed is the good approach of the green textiles of exploitation.
The present invention adopts the green peel of walnut extract, wool is dyeed as mordant with ferrous salt, and the wool black that is dyed is comparatively pure.Because the existence of mordant has improved the COLOR FASTNESS and the dye-uptake of dyeing greatly, effectively reduce the waste of resource simultaneously, also had the environmental-protection function of nontoxic pollution-free simultaneously.
The specific embodiment
Below in conjunction with embodiment the present invention is done further elaboration:
Embodiment 1
(1), preparation green peel of walnut extract: take by weighing green peel of walnut powder 50 and place container, add 1000ml methyl alcohol, in 40 ℃ of following water-bath extraction 12h, get extract, the filtrating that suction filtration obtains is the green peel of walnut extract.
(2), dyeing: with the FeSO of 2.0g wool and wool weight 4%
4.7H
2The O mordant places 40ml distilled water, behind 50 ℃ of following mordant dyeing 60min, takes out;
(3), wool after (2) mordant dyeing that obtains of step is put in the dye bath that the pyrogallic acid by the green peel of walnut extract of 20ml step (1) preparation and wool weight 6% is made into; Regulating dye bath pH is 4; Be warming up to 50 ℃ then, stir dyeing 10min down.
(4), take out wool, with the cold water flushing, dry.
Embodiment 2
(1), take by weighing 60g green peel of walnut powder, add water 600ml distilled water in 65 ℃ of following water-baths extraction 18h, suction filtration must be filtrated.
(2), dyeing: with the FeSO of 2.0g wool and wool weight 8%
4.7H
2The O mordant places 40ml distilled water, behind 40 ℃ of following mordant dyeing 40min, takes out;
(3), wool after (2) mordant dyeing that obtains of step is put in the dye bath that the pyrogallic acid by the green peel of walnut extract of 30ml step (1) preparation and wool weight 4% is made into; Regulating dye bath pH is 5.5; Be warming up to 70 ℃ then, stir dyeing 60min down.
(4), take out wool, with the cold water flushing, dry.
Embodiment 3
(1), preparation green peel of walnut extract: take by weighing green peel of walnut powder 100g and place container, add the 500ml absolute ethyl alcohol, in 90 ℃ of following water-bath extraction 24h, get extract, the filtrating that suction filtration obtains is the green peel of walnut extract.
(2), dyeing: with the FeSO of 2.0g wool and wool weight 12%
4.7H
2The O mordant places 40ml distilled water, behind 50 ℃ of following mordant dyeing 30min, takes out;
(3), wool after (2) mordant dyeing that obtains of step is put in the dye bath that the pyrogallic acid by the green peel of walnut extract of 60ml step (1) preparation and wool weight 1% is made into; Regulating dye bath pH is 6; Be warming up to 85 ℃ then, stir dyeing 10min down.
(4), take out wool, with the cold water flushing, dry.
Embodiment 4 (Comparative Examples)
(1), dyeing: with the FeSO of 2.0g wool and wool weight 8%
4.7H
2The O mordant places 40ml distilled water, behind 40 ℃ of following mordant dyeing 40min, takes out;
(2), wool after (2) mordant dyeing that obtains of step is put in the dye bath that the pyrogallic acid by 30ml water and wool weight 4% is made into, regulating dye bath pH is 5.5, is warming up to 70 ℃ then, stirs the 60min that dyes down.
(3), take out wool, with the cold water flushing, dry.
Table 1 is dye-uptake, L value, the △ E correction data of above four black wools that embodiment dyed.
Table 1
?
|
Dye-uptake (%) |
L |
△E |
Embodiment 1 |
42.15 |
16.56 |
45.87 |
Embodiment 2 |
48.98 |
14.89 |
47.97 |
Embodiment 3 |
43.18 |
15.23 |
46.11 |
Embodiment 4 |
39.79 |
33.27 |
34.53 |
From table 1, can find out: adopt embodiment 2 methods can wool be dyed pure black, dye-uptake is 41.98%, and the L value is 14.89, and color is a black, and △ E is 47.97, and dye level is the darkest.