阅读说明：本技术 一种改性纤维素纤维、环保混纺纱线和面料 (Modified cellulose fiber, environment-friendly blended yarn and fabric ) 是由 张连京 龙晓霞 李俊礼 于 2019-08-21 设计创作，主要内容包括：本发明涉及纺织技术领域,特别是涉及一种改性纤维素纤维、环保混纺纱线和面料。所述改性纤维素纤维的原料包括纤维素纤维、添加剂和上油剂；所述添加剂包括阳离子改性剂、螯合剂和pH调节剂,所述阳离子改性剂为纤维素纤维重量的5％～50％,所述螯合剂为纤维素纤维重量的0.5％～3％；所述上油剂包括柔软剂,所述柔软剂为纤维素纤维重量的2％-8％。本发明通过对纤维素纤维进行阳离子化改性,从而有效提高染料在纤维的上染性能。经过改性的纤维素纤维可进行无盐无碱或无盐低碱染色,降低了生产及污水处理成本。将改性纤维素纤维和普通纤维素纤维按照一定配比进行花式混纺、织造成布,使用活性染料对成品纱线、布进行染色,获得不同底色效果。(The invention relates to the technical field of spinning, in particular to modified cellulose fiber, environment-friendly blended yarn and fabric. The raw materials of the modified cellulose fiber comprise cellulose fiber, additive and oiling agent; the additive comprises a cation modifier, a chelating agent and a pH regulator, wherein the cation modifier accounts for 5-50% of the weight of the cellulose fibers, and the chelating agent accounts for 0.5-3% of the weight of the cellulose fibers; the oiling agent comprises a softening agent, and the softening agent accounts for 2% -8% of the weight of the cellulose fibers. The invention effectively improves the dyeing performance of the dye on the fiber by performing cationization modification on the cellulose fiber. The modified cellulose fiber can be subjected to salt-free alkali-free or salt-free low-alkali dyeing, so that the production and sewage treatment costs are reduced. Fancy blending and weaving the modified cellulose fiber and the common cellulose fiber into cloth according to a certain proportion, and dyeing finished yarns and cloth by using reactive dye to obtain different ground color effects.)

1. The modified cellulose fiber is prepared from the raw materials of cellulose fiber, an additive and an oiling agent;

the additive comprises a cation modifier, a chelating agent and a pH regulator, wherein the cation modifier accounts for 5-50% of the weight of the cellulose fibers, the chelating agent accounts for 0.5-3% of the weight of the cellulose fibers, the oiling agent is selected from a softening agent, and the softening agent accounts for 2-8% of the weight of the cellulose fibers.

2. The modified cellulose fiber of claim 1, further comprising one or more of the following technical features:

A1) the cellulose fiber is selected from one or more of raw cotton, carded cotton web, combed cotton web, noil, viscose staple fiber, modal staple fiber and tencel staple fiber;

A2) the cationic modifier is a compound of a small molecular modifier and a high molecular modifier, and the small molecular modifier is selected from one or more of epoxy trimethylamine quaternary ammonium salt, epoxy quaternary ammonium salt epichlorohydrin and azetidine; the polymer is selected from one or more of polyamide polyamine epichlorohydrin, double active group polyquaternary ammonium salt, cationic starch and polyamide epichlorohydrin resin; the mass ratio of the small molecular modifier to the high molecular modifier is 6: 4-8: 2;

A3) the chelating agent is selected from one or more of sodium tripolyphosphate, sodium polyphosphate, sodium hexametaphosphate, nitrilotriacetic acid, ethylene diamine tetraacetic acid, polyacrylic acid and maleic acid;

A4) the pH regulator is selected from inorganic base, and the inorganic base is selected from one or more of sodium hydroxide, sodium carbonate and sodium bicarbonate.

3. The modified cellulose fibers of claim 1, wherein the softening agent is selected from non-silicon softening agents and/or silicon softening agents, the non-silicon softening agents comprising a combination of one or more of alkyl betaine type, quaternary ammonium salts, fatty acid esters; the silicon-containing softener is selected from one or more of polyether modified organic silicon, amino/polyether modified organic silicon and linear block copolymerization modified organic silicon.

4. A method for producing a modified cellulose fiber according to any one of claims 1 to 3, comprising: and (3) pretreating the cellulose fiber, adding a cation modifier, a chelating agent and alkali to modify the fiber, and washing and oiling after modification.

5. The process for the preparation of modified cellulose fibers according to claim 4, characterized in that it further comprises one or more of the following technical features:

1) fiber pretreatment: the fiber pretreatment is to treat the cellulose fiber for 10-60min by adopting a refining pretreatment agent at the temperature of 40-95 ℃, wherein the concentration of the refining pretreatment agent is 1-10 g/L, the bath ratio is 1: 5-1: 20, and the refining pretreatment agent is selected from one or more of alkaline agent, penetrating agent, detergent and emulsifier;

2) fiber modification treatment: adding a chelating agent and a modifying agent into the fiber obtained by the fiber pretreatment in the step 1), operating for 5-20min, adding a pH regulator, heating to 40-85 ℃, and operating for 40-60min under the condition of heat preservation, wherein the bath ratio of the fiber modification treatment is 1:4-1: 20;

3) and (3) water washing after modification: washing the modified cellulose fiber with water, and pickling to obtain a cellulose fiber with a pH value of 4.5-7.0;

4) oiling: oiling with softening agent at 30-70 deg.C for 20-40 min.

6. Use of the modified cellulose fiber according to any one of claims 1 to 3 in an environmentally friendly blended yarn or fabric.

7. A blended yarn comprising a white blended yarn obtained by blending a cellulose fiber and/or a polyester fiber with the modified cellulose fiber according to any one of claims 1 to 3, and dyeing the white blended yarn with a dye without salt.

8. A blended fabric, which comprises the steps of blending cellulose fibers and/or polyester fibers with the modified cellulose fibers of any one of claims 1-3 to obtain white blended yarns, weaving the white blended yarns into a white fabric, and then dyeing the white fabric without salt by using dyes.

9. The blended yarn or blended fabric of claim 7, wherein the weight ratio of the sum of the cellulose fiber and the polyester fiber to the modified cellulose fiber is 0.5-99.5%: 0.5-99.5%;

and/or; the weight ratio of the cellulose fiber to the modified cellulose fiber is 0.5-99.5%: 0.5-99.5%;

and/or; the weight ratio of the polyester fiber to the modified cellulose fiber is 0.5-99.5%: 0.5-99.5%;

and/or; the bath ratio is 1: 3-1: 100.

10. use of a blended yarn as claimed in claim 7 or a blended fabric as claimed in claim 8 in garments, bedding.

Technical Field

The invention relates to the technical field of spinning, in particular to modified cellulose fiber, environment-friendly blended yarn and fabric.

Background

The traditional cellulose fiber dyeing method needs a large amount of electrolyte as an accelerating agent, and the reactive dye has low dye uptake, long process, large water, electricity and steam consumption and generates a large amount of high-salinity and high-chroma dyeing wastewater. Not only increases the production and wastewater treatment cost of enterprises, but also causes great environmental burden. The cellulose fiber is urgently needed to be modified, so that the modified fiber can be subjected to salt-free alkali-free or salt-free low-alkali dyeing, and the production and sewage treatment cost is greatly reduced.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a modified cellulose fiber for solving the problem of dye-uptake on the fiber.

In order to achieve the above and other related objects, the present invention provides, in one aspect, a modified cellulose fiber, the raw material of which comprises cellulose fiber, an additive and an oiling agent; the additive comprises a cation modifier, a chelating agent and a pH regulator, wherein the cation modifier accounts for 5-50% of the weight of the cellulose fibers, and the chelating agent accounts for 0.5-3% of the weight of the cellulose fibers; the oiling agent is selected from a softening agent, and the softening agent accounts for 2-8% of the weight of the cellulose fiber.

In some embodiments of the invention, the cellulosic fibers are selected from the group consisting of raw cotton, carded web, combed web, noil, viscose staple fiber, modal staple fiber, tencel staple fiber, and combinations thereof.

In some embodiments of the invention, the cationic modifier is a combination of a small molecule modifier and a high molecule modifier, the small molecule modifier is selected from one or more of epoxy trimethylamine quaternary ammonium salt, epoxy quaternary ammonium salt epichlorohydrin and azetidine; the polymer is selected from one or more of polyamide polyamine epoxy chloropropane, double-active group polyquaternary ammonium salt, cationic starch and polyamide epichlorohydrin resin, and the mass ratio of the small-molecule modifier to the high-molecule modifier is 6: 4-8: 2.

In some embodiments of the invention, the chelating agent is selected from the group consisting of sodium tripolyphosphate, sodium polyphosphate, sodium hexametaphosphate, nitrilotriacetic acid, ethylenediaminetetraacetic acid, polyacrylic acid, maleic acid, and combinations of one or more thereof.

In some embodiments of the invention, the pH adjusting agent is selected from inorganic bases selected from the group consisting of sodium hydroxide, sodium carbonate, sodium bicarbonate in combination with one or more of these.

In some embodiments of the invention, the softening agent is selected from non-silicon softening agents and/or silicon softening agents, the non-silicon softening agents comprising a combination of one or more of alkyl betaine type, quaternary ammonium salt type, fatty acid ester type; the silicon-containing softener is selected from one or more of polyether modified organic silicon, amino/polyether modified organic silicon and linear block copolymerization modified organic silicon.

In another aspect, the present invention provides a method for preparing modified cellulose fibers, comprising: and (3) pretreating the cellulose fiber, adding a cation modifier, a chelating agent and alkali to modify the fiber, and washing and oiling after modification.

In some embodiments of the invention, one or more of the following technical features are also included:

1) fiber pretreatment: the fiber pretreatment is to treat the cellulose fiber for 10-60min by adopting a refining pretreatment agent at the temperature of 40-95 ℃, wherein the concentration of the refining pretreatment agent is 1-10 g/L, the bath ratio is 1: 5-1: 20, and the refining pretreatment agent is selected from one or more of alkaline agent, penetrating agent, detergent and emulsifier;

2) fiber modification treatment: adding a chelating agent and a modifying agent into the fiber obtained by the fiber pretreatment in the step 1), operating for 5-20min, adding a pH regulator, heating to 40-85 ℃, and operating for 40-60min under the condition of heat preservation, wherein the bath ratio of the fiber modification treatment is 1:4-1: 20;

3) and (3) water washing after modification: washing the modified cellulose fiber with water, and pickling to obtain a cellulose fiber with a pH value of 4.5-7.0;

4) oiling: oiling with softening agent at 30-70 deg.C for 20-40 min.

In another aspect, the invention provides the use of the modified cellulose fiber of the invention in an environmentally friendly blended yarn or fabric.

The invention also provides blended yarn, which comprises the steps of blending cellulose fiber and/or polyester fiber with the modified cellulose fiber to obtain white blended yarn, and dyeing the white blended yarn with reactive dye without salt.

The invention also provides a blended fabric, which comprises the steps of blending cellulose fibers and/or polyester fibers with the modified cellulose fibers to obtain white blended yarns, weaving the white blended yarns into white fabrics, and dyeing the white fabrics without salt by using reactive dyes.

In some embodiments of the invention, the weight ratio of the sum of the cellulose fiber and the polyester fiber to the modified cellulose fiber is 0.5 to 99.5%: 0.5-99.5%; and/or; the weight ratio of the cellulose fiber to the modified cellulose fiber is 0.5-99.5%: 0.5-99.5%; and/or; the weight ratio of the polyester fiber to the modified cellulose fiber is 0.5-99.5%: 0.5-99.5%; and/or; the bath ratio is 1: 3-1: 100.

in another aspect, the invention provides the use of the blended yarn or blended fabric of the invention in clothing and bedding.

Drawings

FIG. 1 shows an environment-friendly blended fabric with red and coffee colors prepared in example 1 of the present invention.

FIG. 2 shows an environment-friendly blended fabric with red and coffee colors prepared in example 2 of the present invention.

FIG. 3 shows an environment-friendly blended fabric with red and coffee colors prepared in example 3 of the present invention.

FIG. 4 shows a blue and green environment-friendly blended fabric prepared in example 4 of the present invention.

Fig. 5 is a comparison graph of the red environment-friendly blended fabric prepared in example 5 of the present invention and the red blended fabric prepared in comparative example 1.

Detailed Description

The modified cellulose fiber, the eco-friendly blended yarn and the fabric according to the present invention are explained in detail as follows.

The first aspect of the invention provides modified cellulose fiber, wherein the raw material of the modified cellulose fiber comprises cellulose fiber, an additive and an oiling agent; the additives include a cation modifier, a chelating agent, and a pH adjuster.

The cationic modifier accounts for 5-50% of the weight of the cellulose fiber. Further, the cationic modifier can be 5-10%, 10-20%, 20-30%, 30-40% and 40-50% of the weight of the cellulose fiber.

The chelating agent accounts for 0.5 to 3 percent of the weight of the cellulose fiber. Further, the chelating agent can be 0.5-1%, 1-2%, 2-3% of the weight of the cellulose fiber.

The oiling agent is selected from a softening agent, and the softening agent accounts for 2-8% of the weight of the cellulose fiber. Further, the softening agent can be 2% -3%, 3% -4%, 4% -5%, 5% -6%, 6% -7% and 7% -8% of the weight of the cellulose fiber.

The modified cellulose fiber provided by the invention is selected from one or more of raw cotton, carded cotton web, combed cotton web, noil, viscose staple fiber, modal staple fiber, tencel staple fiber and the like.

According to the modified cellulose fiber provided by the invention, the cationic modifier is a compound of a small molecular modifier and a high molecular modifier.

Further, the small molecule modifier is selected from one or more of epoxy trimethylamine quaternary ammonium salt, epoxy quaternary ammonium salt epichlorohydrin and azetidine, the epoxy trimethylamine quaternary ammonium salt is selected from 2, 3-epoxypropyl trimethyl ammonium chloride, the epoxy quaternary ammonium salt epichlorohydrin is selected from hydroxypropyl trimethyl quaternary ammonium salt;

further, the polymer is selected from one or more of polyamide polyamine epichlorohydrin, double active group polyquaternary ammonium salt, cationic starch and polyamide epichlorohydrin resin.

Further, the mass ratio of the small molecular modifier to the high molecular modifier is 6: 4-8: 2.

The modified cellulose fiber provided by the invention is characterized in that the chelating agent is selected from one or more of sodium tripolyphosphate, sodium polyphosphate, sodium hexametaphosphate, nitrilotriacetic acid, ethylene diamine tetraacetic acid, polyacrylic acid and maleic acid. The chelating agent softens water on one hand and can improve the modification effect on the other hand.

The pH regulator is selected from inorganic alkali, and the inorganic alkali is selected from one or more of sodium hydroxide, sodium carbonate, sodium bicarbonate and the like. The dosage of the inorganic base is 1g/L-20 g/L; furthermore, the dosage of the inorganic base can be 1g/L-5g/L, 5g/L-10g/L, 10g/L-15g/L and 15g/L-20 g/L.

The modified cellulose fiber provided by the invention is characterized in that the softening agent is selected from non-silicon softening agents and/or silicon softening agents.

Further, the non-silicon softening agent comprises one or more of alkyl betaine type, quaternary ammonium salt type and fatty acid ester type;

further, the silicon-containing softener is selected from one or more of polyether modified organic silicon, amino/polyether modified organic silicon and linear block copolymerization modified organic silicon.

In a second aspect, the present invention provides a method for preparing a modified cellulose fiber according to the first aspect of the present invention, comprising: and (3) pretreating the cellulose fiber, adding a cation modifier, a chelating agent and alkali to modify the fiber, and washing and oiling after modification.

In the preparation method of the modified cellulose fiber provided by the invention, the fiber pretreatment comprises the following steps: the fiber pretreatment is to treat the cellulose fiber for 10-60min by adopting a refining pretreatment agent at the temperature of 40-95 ℃, wherein the concentration of the refining pretreatment agent is 1-10 g/L, the bath ratio is 1: 5-1: 20, and the refining pretreatment agent is selected from one or more of alkaline agent, penetrating agent, detergent and emulsifier.

In the preparation method of the modified cellulose fiber provided by the invention, the fiber modification treatment comprises the following steps: adding a chelating agent and a modifying agent into the fiber obtained by the fiber pretreatment in the step 1), operating for 5-20min, adding a pH adjusting agent, heating to 40-85 ℃, and operating for 40-60min under the condition of heat preservation, wherein the bath ratio of the fiber modification treatment is 1:4-1: 20.

Further, the pH regulator is inorganic base, and when the pH regulator is used, the inorganic base is added for three times, the interval between each time of adding the base is 5-10min, and the operation is carried out for 10min after the addition of the base agent is finished. The inorganic base is selected from one or more of sodium hydroxide, sodium carbonate and sodium bicarbonate.

Further, the cationic modifier is a compound of a small molecule modifier and a high molecule modifier, the small molecule modifier is selected from one or more of epoxy trimethylamine quaternary ammonium salt, epoxy quaternary ammonium salt epichlorohydrin and azetidine, the epoxy trimethylamine quaternary ammonium salt is selected from 2, 3-epoxypropyltrimethyl ammonium chloride, and the epoxy quaternary ammonium salt epichlorohydrin is selected from hydroxypropyl trimethyl quaternary ammonium salt; the polymer is selected from one or more of polyamide polyamine epichlorohydrin, double active group polyquaternary ammonium salt, cationic starch and polyamide epichlorohydrin resin. The mass ratio of the small molecular modifier to the high molecular modifier is 6: 4-8: 2.

Further, the chelating agent is selected from one or more of sodium tripolyphosphate, sodium polyphosphate, sodium hexametaphosphate, nitrilotriacetic acid, ethylene diamine tetraacetic acid, polyacrylic acid and maleic acid.

In the preparation method of the modified cellulose fiber provided by the invention, the water washing after modification comprises the following steps: and washing the modified cellulose fiber with water at the temperature of 20-90 ℃ for 5-20min, wherein the pH value after acid washing is 4.5-7.0, and the acid washing is acetic acid.

In the preparation method of the modified cellulose fiber provided by the invention, oiling comprises the following steps: oiling with softening agent at 30-70 deg.C for 20-40 min. The softening agent is selected from non-silicon softening agents and silicon softening agents, and the non-silicon softening agents comprise one or more of alkyl betaine type, quaternary ammonium salt type and fatty acid ester type; the silicon-containing softener is selected from one or more of polyether modified organic silicon, amino/polyether modified organic silicon and linear block copolymerization modified organic silicon.

A third aspect of the invention provides the use of modified cellulosic fibres in an environmentally friendly blended yarn or fabric.

The fourth aspect of the invention provides blended yarn, which comprises the steps of blending cellulose fiber and/or polyester fiber with the modified cellulose fiber of the first aspect of the invention to obtain white blended yarn, and dyeing the white blended yarn with dye without salt.

The fifth aspect of the invention provides blended fabric, which comprises the steps of blending cellulose fibers and/or polyester fibers with the modified cellulose fibers to obtain white blended yarns, weaving the white blended yarns into white fabrics, and dyeing the white fabrics with dyes without salt.

In the blended yarn or fabric provided by the invention, the dye is selected from anionic dye or cationic dye, and the anionic dye is selected from one or more of reactive dye, direct dye, acid dye and the like. The cationic dyes used are those known to the person skilled in the art and are generally used for dyeing cationically dyeable chemical fibers.

The dyeing of the environment-friendly blended yarn or fabric provided by the invention can be one-step one-bath dyeing, and the bath ratio is usually (1: 3) - (1: 100), for example. In the dyeing process, proper cationic dye and anionic dye are selected for dyeing in one bath, the cationic dye is used for calculating and batching according to the mass of cationic dyeable fiber contained in the yarn or fabric, and the anionic dye is used for calculating and batching according to the mass of modified cellulose fiber contained in the yarn or fabric; but should avoid the aggregation of the different dyes in the dye bath to affect dyeing; the anionic dye and the cationic dye are respectively used for dyeing different types of fibers, and a good color blending effect can be achieved by one-time one-bath dyeing.

The bath ratio in the present invention generally refers to the mass ratio of the dye liquor prepared in the dip dyeing or exhaust dyeing to the material to be dyed.

The environment-friendly blended yarn or fabric provided by the invention can be obtained by blending the cellulose fiber, the modified cellulose fiber and the terylene according to a certain proportion and then carrying out spinning processes of different spinning styles, wherein the spinning processes of different spinning styles of the white blended yarn are a spinning process of a common style, a spinning process of an AB yarn style, a spinning process of a slub yarn style or a spinning process of a color-point yarn style. The weight ratio of the sum of the cellulose fiber and the polyester fiber to the modified cellulose fiber is 0.5-99.5%: 0.5-99.5%;

and/or; the weight ratio of the cellulose fiber to the modified cellulose fiber is 0.5-99.5%: 0.5-99.5%;

and/or; the weight ratio of the polyester fiber to the modified cellulose fiber is 0.5-99.5%: 0.5-99.5 percent.

The invention provides an application of the environment-friendly blended yarn or blended fabric in clothing and bedding. The clothes comprise high-grade underwear, T-shirts, casual clothes, sportswear and the like which are well known by the technical personnel in the field.

The invention carries out cationization modification on cellulose fibers, introduces cationic groups into fiber macromolecules, leads the surfaces of the fibers to have positive charges, and leads the reactive dye to dye the fibers by depending on the affinity between molecules to be changed into the coulomb force, thereby effectively improving the dye-uptake performance of the dye on the fibers. The modified cellulose fiber can be subjected to salt-free alkali-free or salt-free low-alkali dyeing, so that the production and sewage treatment costs are greatly reduced. Fancy blending and weaving are carried out on the modified cellulose fiber and the common cellulose fiber according to a certain proportion to form cloth, and the finished yarn and cloth are dyed by using reactive dye, so that appearance styles with different ground color effects can be obtained, no electrolyte is required to be added in the dyeing process, the process flow is short, and the delivery period is shortened.

The following examples are provided to further illustrate the advantageous effects of the present invention.

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clear, the present invention is further described in detail below with reference to examples. However, it should be understood that the embodiments of the present invention are only for explaining the present invention and are not for limiting the present invention, and the embodiments of the present invention are not limited to the embodiments given in the specification. The examples were prepared under conventional conditions or conditions recommended by the material suppliers without specifying specific experimental conditions or operating conditions.

Furthermore, it is to be understood that one or more method steps mentioned in the present invention does not exclude that other method steps may also be present before or after the combined steps or that other method steps may also be inserted between these explicitly mentioned steps, unless otherwise indicated; it is also to be understood that a combined connection between one or more devices/apparatus as referred to in the present application does not exclude that further devices/apparatus may be present before or after the combined device/apparatus or that further devices/apparatus may be interposed between two devices/apparatus explicitly referred to, unless otherwise indicated. Moreover, unless otherwise indicated, the numbering of the various method steps is merely a convenient tool for identifying the various method steps, and is not intended to limit the order in which the method steps are arranged or the scope of the invention in which the invention may be practiced, and changes or modifications in the relative relationship may be made without substantially changing the technical content.

In the following examples, reagents, materials and instruments used are commercially available unless otherwise specified.

Example 1

1. Preparation of modified cellulose fibers

The raw materials of the modified cellulose fiber comprise cellulose fiber, an additive and a oiling agent, wherein the additive comprises a cation modifier, a chelating agent and a pH regulator.

The cationic modifier is used in an amount of 20% relative to the weight of the cellulose fibers. The cation modifier is hydroxypropyl trimethyl quaternary ammonium salt and polyamide polyamine epichlorohydrin, and the mass ratio of the hydroxypropyl trimethyl quaternary ammonium salt to the polyamide polyamine epichlorohydrin is 6: 4.

The chelating agent is sodium tripolyphosphate, and the dosage of the chelating agent is 1% of the weight of the cellulose fiber.

The pH regulator is inorganic alkali, the inorganic alkali is sodium hydroxide, and the using amount of the inorganic alkali is 8 g/L;

the common cellulose fiber is put into loose fiber dyeing equipment for refining treatment, then is washed by water, and then is added with the cation modifier, the chelating agent and the inorganic base according to the proportion for modification treatment, and after washing by water, HAC is added for neutralization and softening treatment, wherein the softening agent is polyether modified organic silicon.

2. Preparation of environment-friendly blended yarn and fabric

The modified cellulose fiber (cation modified cotton) of the embodiment is subjected to blowing, cotton carding, combing, drawing and roving to prepare segment-color auxiliary yarn, and the natural-color raw cotton is subjected to blowing, cotton carding, combing, drawing and roving to prepare segment-color main yarn; the segment color auxiliary yarn and the main yarn are made into the segment color spun yarn with auxiliary yarn long segments intermittently attached to the main yarn on a ring spinning segment color spinning machine, and the auxiliary yarn accounts for 25 percent. The length of colored yarn is used for weaving plain woven fabric.

The fabric is dyed in one bath in a dip dyeing mode, and the dyeing process parameters are as follows:

reactive dyes (o.w.f. calculated on the mass of modified cellulose fibers contained in the fabric);

color 1 formula:

yellow 3RN 0.15%

Red 3BS 2.0%

Soda ash: 1.0 percent

And (3) color 2 formula:

bath ratio of 1: 10, dyeing temperature is 60 ℃; dyeing time is 30 minutes; the heating rate is 1-2 ℃/min.

Finally, the red/coffee environment-friendly blended fabric is obtained, and is shown in the attached figure of example 1.

And carrying out one-time one-bath dyeing on the white environment-friendly blended yarn by adopting the same dyeing process conditions as the fabric to finally obtain the red/coffee environment-friendly blended yarn.

Example 2

1. Preparation of modified cellulose fibers

The raw materials of the modified cellulose fiber comprise cellulose fiber, an additive and a oiling agent, wherein the additive comprises a cation modifier, a chelating agent and a pH regulator.

The dosage of the cationic modifier is 20% of the weight of the cellulose fiber, the cationic modifier is 2, 3-epoxypropyltrimethylammonium chloride and polyamide polyamine epichlorohydrin, and the mass ratio of the 2, 3-epoxypropyltrimethylammonium chloride to the polyamide polyamine epichlorohydrin is 8: 2;

the chelating agent is sodium hexametaphosphate, and the using amount of the chelating agent is 1 percent of the weight of the cellulose fiber;

the pH regulator is inorganic alkali, the inorganic alkali is sodium hydroxide, and the using amount is 8 g/L;

the common cellulose fiber is put into loose fiber dyeing equipment for refining treatment, then is washed by water, and then is added with the cation modifier, the chelating agent and the alkali according to the proportion for modification treatment, and after washing by water, HAC is added for neutralization and softening treatment, wherein the softener is amino/polyether modified organic silicon.

2. Preparation of environment-friendly blended yarn and fabric

The modified cellulose fiber (cationic modified cotton) of 3% in the example was made into cotton dots, mixed with the white raw cotton fine mesh of 97%, and subjected to blowing, carding, drawing, roving, spinning, and spooling to produce a yarn containing the cationic modified cotton color dots of 3%, and the yarn was woven into a plain knitted fabric.

The fabric is dyed in one bath in a dip dyeing mode, and the dyeing process parameters are as follows:

reactive dyes (o.w.f. calculated on the mass of modified cellulose fibers contained in the fabric);

color 1 formula:

yellow 3RN 0.15%

Red 3BS 2.0%

Soda ash: 1.0 percent

And (3) color 2 formula:

bath ratio of 1: 10, dyeing temperature is 60 ℃; dyeing time is 30 minutes; the heating rate is 1-2 ℃/min.

Finally, the red/coffee environment-friendly blended fabric is obtained, and is shown in the attached figure of example 2.

And carrying out one-time one-bath dyeing on the white environment-friendly blended yarn by adopting the same dyeing process conditions as the fabric to finally obtain the red/coffee environment-friendly blended yarn.

Example 3

1. Preparation of modified cellulose fibers

The raw materials of the modified cellulose fiber comprise cellulose fiber, an additive and a oiling agent, wherein the additive comprises a cation modifier, a chelating agent and a pH regulator.

The dosage of the cationic modifier is 20 percent relative to the weight of the cellulose fiber; the mass ratio of the 2, 3-epoxypropyltrimethylammonium chloride to the polyamide epichlorohydrin resin is 6: 4.

The chelating agent is sodium hexametaphosphate, and the using amount of the chelating agent is 1 percent of the weight of the cellulose fiber;

the pH regulator is inorganic alkali, the inorganic alkali is sodium hydroxide, and the using amount of the inorganic alkali is 8 g/L;

the common cellulose fiber is put into loose fiber dyeing equipment for refining treatment, then is washed by water, and then is added with the cation modifier, the chelating agent and the alkali according to the proportion for modification treatment, and then is added with HAC for neutralization and softening treatment after being washed by water, wherein the softening agent is alkyl betaine type.

2. Preparation of environment-friendly blended yarn and fabric

The modified cellulose fiber (cation modified cotton) of the embodiment is subjected to blowing, cotton carding, combing, drawing and roving to prepare segment-color auxiliary yarn, and the natural-color raw cotton is subjected to blowing, cotton carding, combing, drawing and roving to prepare segment-color main yarn; the segment color auxiliary yarn and the main yarn are made into segment color spun yarn with auxiliary yarn short pieces intermittently attached to the main yarn on a ring spinning segment color spinning machine, and the auxiliary yarn accounts for 10 percent. The length of colored yarn is used for weaving plain woven fabric.

The fabric is dyed in one bath in a dip dyeing mode, and the dyeing process parameters are as follows:

reactive dyes (o.w.f. calculated on the mass of modified cellulose fibers contained in the fabric);

color 1 formula:

yellow 3RN 0.15%

Red 3BS 2.0%

Soda ash: 1.0 percent

And (3) color 2 formula:

yellow 3RN 1.5%

Red 3BS 0.87%

0.3 percent of Yuanqing B

Soda ash: 0.5 percent

Bath ratio of 1: 10, dyeing temperature is 60 ℃; dyeing time is 30 minutes; the heating rate is 1-2 ℃/min.

Finally, the red/coffee environment-friendly blended fabric is obtained, and is shown in the attached figure of the embodiment 3.

And carrying out one-time one-bath dyeing on the white environment-friendly blended yarn by adopting the same dyeing process conditions as the fabric to finally obtain the red/coffee environment-friendly blended yarn.

Example 4

1. Preparation of modified cellulose fibers

The raw materials of the modified cellulose fiber comprise cellulose fiber, an additive and a oiling agent, wherein the additive comprises a cation modifier, a chelating agent and a pH regulator.

The dosage of the cationic modifier is 30 percent of the relative weight of the fibers, and the cationic modifier is 2, 3-epoxypropyltrimethylammonium chloride and polyamide epichlorohydrin resin, and the mass ratio of the cationic modifier to the polyamide epichlorohydrin resin is 6: 4;

the chelating agent is sodium hexametaphosphate, and the using amount of the chelating agent is 0.8 percent of the relative weight of the fiber;

the pH regulator is inorganic alkali, the inorganic alkali is sodium hydroxide, and the using amount is 10 g/L;

the common cellulose fiber is put into loose fiber dyeing equipment for refining treatment, then is washed by water, and then is added with the cation modifier, the chelating agent and the alkali according to the proportion for modification treatment, and after washing by water, HAC is added for neutralization and softening treatment, wherein the softening agent is linear block copolymerization modified organic silicon.

2. Preparation of environment-friendly blended yarn and fabric

The 25% modified cellulose fiber (cationic modified cotton) of this example and 75% virgin cotton were mixed, and then subjected to blowing, carding, combing, drawing, roving, spinning, and spooling to prepare a combed yarn containing 25% cationic modified cotton, and a plain knitted fabric was woven from the combed yarn.

The fabric is dyed in one bath in a dip dyeing mode, and the dyeing process parameters are as follows:

reactive dyes (o.w.f. calculated on the mass of modified cellulose fibers contained in the fabric);

color 1 formula:

red 3BS 0.2%

Brilliant blue KN-R3%

Soda ash: 1.0 percent

And (3) color 2 formula:

light yellow M-7G 1.2%

1.8 percent of turquoise blue BGN

Soda ash: 2 percent of

Bath ratio of 1: 10, dyeing temperature is 60 ℃; dyeing time is 30 minutes; the heating rate is 1-2 ℃/min.

Finally obtaining the blue/green environment-friendly blended fabric, which is shown in the attached figure of the embodiment 4.

And carrying out one-time one-bath dyeing on the white environment-friendly blended yarn by adopting the same dyeing process conditions as the fabric to finally obtain the red/coffee environment-friendly blended yarn.

Example 5

The raw materials of the modified cellulose fiber comprise cellulose fiber, an additive and a oiling agent, wherein the additive comprises a cation modifier, a chelating agent and a pH regulator.

The dosage of the cationic modifier is 30% of the relative weight of the fibers, and the cationic modifier is 2, 3-epoxypropyltrimethylammonium chloride and polyamide epichlorohydrin resin, and the mass ratio of the cationic modifier to the polyamide epichlorohydrin resin is 6: 4;

the chelating agent is sodium hexametaphosphate, and the using amount of the chelating agent is 0.8 percent of the relative weight of the fiber;

the pH regulator is inorganic alkali, the inorganic alkali is sodium hydroxide, and the using amount is 10 g/L;

the method comprises the steps of putting common cellulose fibers into loose fiber dyeing equipment for refining treatment, then washing with water, adding the cation modifier, the chelating agent and the inorganic base in the proportion for modification treatment, washing with water, adding HAC for neutralization, and carrying out softening treatment, wherein the softening agent is linear block copolymerization modified organic silicon.

2. Preparation of environment-friendly blended yarn and fabric

The 25% modified cellulose fiber (cationic modified cotton) of this example and 75% virgin cotton were mixed, and then subjected to blowing, carding, combing, drawing, roving, spinning, and spooling to prepare a combed yarn containing 25% cationic modified cotton, and a plain knitted fabric was woven from the combed yarn.

The fabric is dyed in one bath in a dip dyeing mode, and the dyeing process parameters are as follows:

reactive dyes (o.w.f. calculated on the mass of modified cellulose fibers contained in the fabric);

color 1 formula:

red 3BS 2.4%

Yellow 3RN 2.5%

Soda ash: 6 percent of

Bath ratio of 1: 10, dyeing temperature is 60 ℃; dyeing time is 30 minutes; the heating rate is 1-2 ℃/min.

Finally, the red environment-friendly blended fabric is obtained, and is shown in the left figure of the attached drawing of example 5.

Comparative example 1

Conventional cotton is selected and dyed by reactive dye.

Color 1 formula:

bath ratio of 1: 10, dyeing temperature is 60 ℃; dyeing time is 30 minutes; the heating rate is 1-2 ℃/min.

The left side of the graph 5 shows that the conventional cotton is dyed by the reactive dye, the right side of the graph 5 shows that the modified cotton fiber in the modified cellulose fiber is dyed by the reactive dye, and the graph shows that the dyeing depth of the modified cotton is deeper than that of the conventional cotton under the condition of the same dye formula, and the dyeing depth can be 10% -30% according to color measurement data. And no salt or alkali or low salt and alkali is generated in the dyeing process, so that the sewage treatment pressure is greatly saved, and the energy consumption cost and the dyeing time cost of water, electricity and gas are saved.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.