CN110629320A - High-toughness blended cotton yarn and manufacturing method thereof - Google Patents

Abstract

The invention relates to the blended cotton yarn, have disclosed a high tenacity blended cotton yarn and its preparation method, its cloth body is interweaved by warp and woof and weaved, the said warp is regenerated cotton yarn fibre, by the cotton fabric of old and useless, cotton yarn leftover bits, polyvinyl alcohol, liquid paraffin, pure acrylic emulsion, sodium dodecylbenzene sulfonate, nanometer titanium dioxide, nanometer silicon dioxide blending make; the weft yarn is bamboo charcoal elastic fiber and is prepared by blending bamboo charcoal fiber, polyethylene glycol terephthalate, glycerol, terephthalic acid, sodium sulfonate, glycerol, a coupling agent and an antioxidant. The raw cotton yarn fiber yarn and the bamboo charcoal elastic fiber yarn treated by the method have high strength, elasticity and sun protection, and good ultraviolet resistance and antistatic property, and the raw cotton yarn fiber yarn and the bamboo charcoal elastic fiber yarn woven by the raw cotton yarn fiber yarn and the bamboo charcoal elastic fiber yarn have the advantages of high quality of regenerated cotton yarn, high strength, high toughness, smooth hand feeling and the like.

Description

High-toughness blended cotton yarn and manufacturing method thereof

Technical Field

The invention relates to blended cotton yarn, in particular to high-toughness blended cotton yarn and a manufacturing method thereof.

Background

The regenerated cotton yarn is a yarn produced by utilizing leftover materials or waste cotton yarn products produced in spinning, weaving and garment processing and a fiber material obtained by reprocessing. The regenerated cotton yarn not only can realize the recycling of resources and save limited resources, but also can solve the treatment problem caused by leftover materials or waste cotton yarn products, and makes a contribution to environmental management.

The blended cotton yarn is processed and matched with other yarns to be woven into the cloth, and the cloth can be widely applied to the fields of medical treatment, articles for daily use and the like, but the existing blended cotton yarn cloth has limited water absorption effect and cannot meet the requirements of people. Therefore, the improvement of the water absorption performance of the cotton yarn is a problem to be solved urgently.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the high-toughness blended cotton yarn and the manufacturing method thereof, and the high-toughness blended cotton yarn is simple in structure and convenient to popularize.

In order to achieve the purpose of the invention, the invention adopts the technical scheme that:

the high-toughness blended cotton yarn is formed by interweaving and weaving warp yarns and weft yarns, wherein the warp yarns are regenerated cotton yarn fibers and are composed of the following raw materials in parts by weight: 30-40 parts of waste cotton fabrics, 15-22 parts of cotton yarn leftover materials, 6-8 parts of polyvinyl alcohol, 3-5 parts of liquid paraffin, 3-4.5 parts of pure acrylic emulsion, 1-1.5 parts of sodium dodecyl benzene sulfonate, 3-5 parts of nano titanium dioxide and 3-5 parts of nano silicon dioxide;

the weft yarn is bamboo charcoal elastic fiber and is composed of the following raw materials in parts by weight: 12-20 parts of bamboo charcoal fiber, 25-35 parts of polyethylene glycol terephthalate, 25-40 parts of glycerol, 20-30 parts of terephthalic acid, 2-8 parts of sodium sulfonate, 5-10 parts of glycerol, 2-4 parts of a coupling agent and 2-4 parts of an antioxidant.

Preferably, the pure acrylic emulsion is composed of the following raw materials in parts by weight: 45-60 parts of methyl methacrylate, 30-50 parts of butyl acrylate, 3-5 parts of acrylic acid, 1.5-4.5 parts of potassium lauryl phosphate, 1.5-4.5 parts of alkyl polyoxyethylene ether, 0.5-1.5 parts of hydroxyethyl acrylate, 0.1-0.8 part of potassium persulfate, 0.1-0.5 part of sodium persulfate, 0.4-0.8 part of hydrogen peroxide, 0.5-1 part of sodium bisulfite and 80-120 parts of distilled water.

Preferably, the preparation method of the pure acrylic emulsion comprises the following steps:

(1) adding part of potassium lauryl phosphate, alkyl polyoxyethylene ether and part of distilled water into an emulsifying cylinder at normal temperature and normal pressure, fully stirring for dissolving, sequentially adding methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl acrylate according to the weight part of the formula, and fully stirring for 15-30 minutes to prepare a pre-emulsion;

(2) adding the rest part of potassium lauryl phosphate and a proper amount of distilled water to the bottom of the kettle, fully stirring and dissolving, heating to 70-90 ℃, then adding potassium persulfate, adding 5% of the total amount of the pre-emulsion prepared in the step (1) to the bottom of the kettle, and reacting for 20-40 minutes to obtain seed emulsion;

(3) after the seed emulsion is completely reacted, the subsequent reaction temperature is 80-90 ℃, the residual pre-emulsion prepared in the step (1) and sodium persulfate are simultaneously dripped, the dripping is controlled for 2-3h, the temperature is kept for 25-45 min after the dripping is finished, and the temperature is kept at 80-90 ℃;

(4) after the heat preservation is finished, cooling to 70-80 ℃, simultaneously dropping hydrogen peroxide and sodium bisulfite separately for 20-40 minutes, preserving the heat for 10-40 minutes after the dropping is finished, then cooling to below 50 ℃, adding a pH regulator to regulate the pH value to 7.0-9.0, and finishing the filtration.

A method for manufacturing high-toughness blended cotton yarn comprises the following steps:

(1) putting polyvinyl alcohol into a stirring kettle, adding 30 times of water, heating to 75 ℃, then adding liquid paraffin, uniformly stirring, cooling to 22-25 ℃, adding pure acrylic emulsion, sodium dodecyl benzene sulfonate, nano titanium dioxide and nano silicon dioxide, and stirring at the speed of 120-150r/min for 30min to form treated slurry;

(2) mixing waste cotton fabrics and cotton yarn leftover materials, then smashing the mixture by using a machine until the fiber length is 2-3mm, soaking the smashed mixed fibers into the treatment slurry prepared in the step (1) for 40-50min, then drying the mixture at the temperature of 80-90 ℃, and then preparing regenerated cotton yarn fiber yarns from the dried fibers through cotton carding and combing processes;

(3) putting polyethylene glycol terephthalate, glycerol, terephthalic acid, sodium sulfonate and glycerol into a dryer for drying treatment, uniformly stirring, heating to the temperature of 180 ℃ and 220 ℃, and adding a coupling agent and an antioxidant;

(4) adding the mixed slurry prepared in the step (3) into an esterification reactor, adding bamboo charcoal fibers, stirring and blending, reacting for 60-80min, adding into a screw extruder, melting to prepare a melt, controlling the temperature of a screw at 250-280 ℃, carrying out heat preservation reaction for 1-2h, then extruding strand silk, carrying out air blowing cooling, and carrying out slicing, wire drawing and drafting treatment to obtain bamboo charcoal elastic fiber yarns;

(5) and (3) taking the regenerated cotton yarn fiber yarn obtained in the step (2) as a warp yarn and the bamboo charcoal elastic fiber yarn obtained in the step (4) as a weft yarn, and weaving to obtain the high-toughness blended cotton yarn fabric.

The invention has the beneficial effects that: the treated raw cotton yarn fiber yarn and bamboo charcoal elastic fiber yarn have high strength, elasticity, sun protection performance, ultraviolet resistance and antistatic performance, and the raw cotton yarn and the bamboo charcoal elastic fiber yarn woven into the cloth not only have the quality of regenerated cotton yarn, but also have the advantages of high strength, high toughness, smooth hand feeling and the like.

Drawings

FIG. 1 is a schematic structural view of the present invention;

1-regenerated cotton yarn fiber and 2-bamboo charcoal elastic fiber.

Detailed Description

In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in figure 1, the high-toughness blended cotton yarn is formed by interweaving and weaving warp yarns and weft yarns, wherein the warp yarns are regenerated cotton yarn fibers and are composed of the following raw materials in parts by weight: 30-40 parts of waste cotton fabrics, 15-22 parts of cotton yarn leftover materials, 6-8 parts of polyvinyl alcohol, 3-5 parts of liquid paraffin, 3-4.5 parts of pure acrylic emulsion, 1-1.5 parts of sodium dodecyl benzene sulfonate, 3-5 parts of nano titanium dioxide and 3-5 parts of nano silicon dioxide;

the weft yarn is bamboo charcoal elastic fiber and is composed of the following raw materials in parts by weight: 12-20 parts of bamboo charcoal fiber, 25-35 parts of polyethylene glycol terephthalate, 25-40 parts of glycerol, 20-30 parts of terephthalic acid, 2-8 parts of sodium sulfonate, 5-10 parts of glycerol, 2-4 parts of a coupling agent and 2-4 parts of an antioxidant.

Preferably, the pure acrylic emulsion is composed of the following raw materials in parts by weight: 45-60 parts of methyl methacrylate, 30-50 parts of butyl acrylate, 3-5 parts of acrylic acid, 1.5-4.5 parts of potassium lauryl phosphate, 1.5-4.5 parts of alkyl polyoxyethylene ether, 0.5-1.5 parts of hydroxyethyl acrylate, 0.1-0.8 part of potassium persulfate, 0.1-0.5 part of sodium persulfate, 0.4-0.8 part of hydrogen peroxide, 0.5-1 part of sodium bisulfite and 80-120 parts of distilled water.

Preferably, the preparation method of the pure acrylic emulsion comprises the following steps:

(1) adding part of potassium lauryl phosphate, alkyl polyoxyethylene ether and part of distilled water into an emulsifying cylinder at normal temperature and normal pressure, fully stirring for dissolving, sequentially adding methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl acrylate according to the weight part of the formula, and fully stirring for 15-30 minutes to prepare a pre-emulsion;

(2) adding the rest part of potassium lauryl phosphate and a proper amount of distilled water to the bottom of the kettle, fully stirring and dissolving, heating to 70-90 ℃, then adding potassium persulfate, adding 5% of the total amount of the pre-emulsion prepared in the step (1) to the bottom of the kettle, and reacting for 20-40 minutes to obtain seed emulsion;

(3) after the seed emulsion is completely reacted, the subsequent reaction temperature is 80-90 ℃, the residual pre-emulsion prepared in the step (1) and sodium persulfate are simultaneously dripped, the dripping is controlled for 2.5 hours, and the temperature is kept for 38 minutes after the dripping is finished, wherein the heat preservation temperature is 80 ℃;

(4) after the heat preservation is finished, cooling to 70-80 ℃, simultaneously dropping hydrogen peroxide and sodium bisulfite separately for 20-40 minutes, preserving the heat for 10-40 minutes after the dropping is finished, then cooling to below 50 ℃, adding a pH regulator to regulate the pH value to 8.5, and finishing the filtration.

A method for manufacturing high-toughness blended cotton yarn comprises the following steps:

(1) putting polyvinyl alcohol into a stirring kettle, adding 30 times of water, heating to 75 ℃, then adding liquid paraffin, uniformly stirring, cooling to 22-25 ℃, adding pure acrylic emulsion, sodium dodecyl benzene sulfonate, nano titanium dioxide and nano silicon dioxide, and stirring at the speed of 120-150r/min for 30min to form treated slurry;

(2) mixing waste cotton fabrics and cotton yarn leftover materials, then smashing the mixture by using a machine until the fiber length is 2-3mm, soaking the smashed mixed fibers into the treatment slurry prepared in the step (1) for 40-50min, then drying the mixture at the temperature of 80-90 ℃, and then preparing regenerated cotton yarn fiber yarns from the dried fibers through cotton carding and combing processes;

(3) putting polyethylene glycol terephthalate, glycerol, terephthalic acid, sodium sulfonate and glycerol into a dryer for drying treatment, uniformly stirring, heating to the temperature of 180 ℃ and 220 ℃, and adding a coupling agent and an antioxidant;

(4) adding the mixed slurry prepared in the step (3) into an esterification reactor, adding bamboo charcoal fibers, stirring and blending, reacting for 60-80min, adding into a screw extruder, melting to prepare a melt, controlling the temperature of a screw at 250-280 ℃, carrying out heat preservation reaction for 1-2h, then extruding strand silk, carrying out air blowing cooling, and carrying out slicing, wire drawing and drafting treatment to obtain bamboo charcoal elastic fiber yarns;

(5) and (3) taking the regenerated cotton yarn fiber yarn obtained in the step (2) as a warp yarn and the bamboo charcoal elastic fiber yarn obtained in the step (4) as a weft yarn, and weaving to obtain the high-toughness blended cotton yarn fabric.

The invention has the beneficial effects that: the treated raw cotton yarn fiber yarn and bamboo charcoal elastic fiber yarn have high strength, elasticity, sun protection performance, ultraviolet resistance and antistatic performance, and the raw cotton yarn and the bamboo charcoal elastic fiber yarn woven into the cloth not only have the quality of regenerated cotton yarn, but also have the advantages of high strength, high toughness, smooth hand feeling and the like.

The first embodiment is as follows:

the high-toughness blended cotton yarn is formed by interweaving and weaving warp yarns and weft yarns, wherein the warp yarns are regenerated cotton yarn fibers and are composed of the following raw materials in parts by weight: 40 parts of waste cotton fabrics, 20 parts of cotton yarn leftover materials, 7 parts of polyvinyl alcohol, 4 parts of liquid paraffin, 3.5 parts of pure acrylic emulsion, 1.2 parts of sodium dodecyl benzene sulfonate, 4 parts of nano titanium dioxide and 4 parts of nano silicon dioxide;

the weft yarn is bamboo charcoal elastic fiber and is composed of the following raw materials in parts by weight: 18 parts of bamboo charcoal fiber, 30 parts of polyethylene terephthalate, 30 parts of glycerol, 25 parts of terephthalic acid, 6 parts of sodium sulfonate, 6 parts of glycerol, 2.5 parts of coupling agent and 2 parts of antioxidant.

Preferably, the pure acrylic emulsion is composed of the following raw materials in parts by weight: 56 parts of methyl methacrylate, 42 parts of butyl acrylate, 4 parts of acrylic acid, 2 parts of potassium lauryl phosphate, 4 parts of alkyl polyoxyethylene ether, 1.1 parts of hydroxyethyl acrylate, 0.3 part of potassium persulfate, 0.2 part of sodium persulfate, 0.6 part of hydrogen peroxide, 0.8 part of sodium bisulfite and 105 parts of distilled water; the preparation method comprises the following steps:

(1) adding part of potassium lauryl phosphate, alkyl polyoxyethylene ether and part of distilled water into an emulsifying cylinder at normal temperature and normal pressure, fully stirring for dissolving, sequentially adding methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl acrylate according to the weight part of the formula, and fully stirring for 20 minutes to prepare a pre-emulsion;

(2) adding the rest part of potassium lauryl phosphate and a proper amount of distilled water to the bottom of the kettle, fully stirring and dissolving, heating to 85 ℃, then adding potassium persulfate, adding 5% of the total amount of the pre-emulsion prepared in the step (1) to the bottom of the kettle, and reacting for 25 minutes to obtain seed emulsion;

(3) after the seed emulsion completely reacts, the subsequent reaction temperature is 85 ℃, the residual pre-emulsion prepared in the step (1) and sodium persulfate are simultaneously dripped, the dripping is controlled for 2-3h, the temperature is kept for 25-45 min after the dripping is finished, and the temperature is kept at 80-90 ℃;

(4) and after the heat preservation is finished, cooling to 75 ℃, simultaneously and separately dropwise adding hydrogen peroxide and sodium bisulfite for 30 minutes, preserving the heat for 35 minutes after the dropwise adding is finished, then cooling to below 50 ℃, adding a pH regulator to regulate the pH to 8.0, and finishing the filtering.

A method for manufacturing high-toughness blended cotton yarn comprises the following steps:

(1) putting polyvinyl alcohol into a stirring kettle, adding 30 times of water, heating to 75 ℃, then adding liquid paraffin, uniformly stirring, cooling to 24 ℃, adding pure acrylic emulsion, sodium dodecyl benzene sulfonate, nano titanium dioxide and nano silicon dioxide, and stirring at the speed of 150r/min for 30min to form treated slurry;

(2) mixing waste cotton fabrics and cotton yarn leftover materials, then smashing the mixture by using a machine until the fiber length is 2-3mm, soaking the smashed mixed fibers into the treatment slurry prepared in the step (1) for 50min, then drying the mixture at the temperature of 80 ℃, and then preparing regenerated cotton yarn fiber yarns from the dried fibers through cotton carding and combing processes;

(3) putting polyethylene glycol terephthalate, glycerol, terephthalic acid, sodium sulfonate and glycerol into a dryer for drying treatment, uniformly stirring, heating to 210 ℃, and adding a coupling agent and an antioxidant;

(4) adding the mixed slurry prepared in the step (3) into an esterification reactor, adding bamboo charcoal fibers, stirring and blending, reacting for 60-80min, adding into a screw extruder, melting to prepare a melt, controlling the temperature of a screw at 270 ℃, carrying out heat preservation reaction for 1.5h, then extruding strand silk, carrying out air blowing cooling, and carrying out slicing, wire drawing and drafting treatment to obtain the bamboo charcoal elastic fiber yarn;

(5) and (3) taking the regenerated cotton yarn fiber yarn obtained in the step (2) as a warp yarn and the bamboo charcoal elastic fiber yarn obtained in the step (4) as a weft yarn, and weaving to obtain the high-toughness blended cotton yarn fabric.

Example two:

the high-toughness blended cotton yarn is formed by interweaving and weaving warp yarns and weft yarns, wherein the warp yarns are regenerated cotton yarn fibers and are composed of the following raw materials in parts by weight: 36 parts of waste cotton fabrics, 18 parts of cotton yarn leftover materials, 6 parts of polyvinyl alcohol, 4 parts of liquid paraffin, 3.5 parts of pure acrylic emulsion, 1.2 parts of sodium dodecyl benzene sulfonate, 4 parts of nano titanium dioxide and 4 parts of nano silicon dioxide;

the weft yarn is bamboo charcoal elastic fiber and is composed of the following raw materials in parts by weight: 16 parts of bamboo charcoal fiber, 28 parts of polyethylene terephthalate, 30 parts of glycerol, 25 parts of terephthalic acid, 6 parts of sodium sulfonate, 8 parts of glycerol, 3 parts of a coupling agent and 3 parts of an antioxidant.

Preferably, the pure acrylic emulsion is composed of the following raw materials in parts by weight: 55 parts of methyl methacrylate, 45 parts of butyl acrylate, 3 parts of acrylic acid, 2.5 parts of potassium lauryl phosphate, 3 parts of alkyl polyoxyethylene ether, 1 part of hydroxyethyl acrylate, 0.4 part of potassium persulfate, 0.3 part of sodium persulfate, 0.6 part of hydrogen peroxide, 0.8 part of sodium bisulfite and 100 parts of distilled water; the preparation method comprises the following steps:

(1) adding part of potassium lauryl phosphate, alkyl polyoxyethylene ether and part of distilled water into an emulsifying cylinder at normal temperature and normal pressure, fully stirring for dissolving, sequentially adding methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl acrylate according to the weight part of the formula, and fully stirring for 25 minutes to prepare a pre-emulsion;

(2) adding the rest part of potassium lauryl phosphate and a proper amount of distilled water to the bottom of the kettle, fully stirring and dissolving, heating to 80 ℃, then adding potassium persulfate, adding 5 percent of the total amount of the pre-emulsion prepared in the step (1) to the bottom of the kettle, and reacting for 35 minutes to obtain seed emulsion;

(3) after the seed emulsion completely reacts, the subsequent reaction temperature is 90 ℃, the residual pre-emulsion prepared in the step (1) and sodium persulfate are dropwise added at the same time, the dropwise addition is controlled for 2-3h, the temperature is kept for 30 minutes after the dropwise addition is finished, and the temperature is kept at 85 ℃;

(4) and after the heat preservation is finished, cooling to 75 ℃, simultaneously and separately dropwise adding hydrogen peroxide and sodium bisulfite for 30 minutes, preserving the heat for 10-40 minutes after the dropwise adding is finished, then cooling to below 50 ℃, adding a pH regulator to regulate the pH to 7.2, and finishing the filtering.

A method for manufacturing high-toughness blended cotton yarn comprises the following steps:

(1) putting polyvinyl alcohol into a stirring kettle, adding 30 times of water, heating to 75 ℃, then adding liquid paraffin, uniformly stirring, cooling to 24 ℃, adding pure acrylic emulsion, sodium dodecyl benzene sulfonate, nano titanium dioxide and nano silicon dioxide, and stirring at the speed of 140r/min for 30min to form treated slurry;

(2) mixing waste cotton fabrics and cotton yarn leftover materials, then smashing the mixture by using a machine until the fiber length is 2-3mm, soaking the smashed mixed fibers into the treatment slurry prepared in the step (1) for 50min, then drying the mixture at the temperature of 90 ℃, and then preparing regenerated cotton yarn fiber yarns by carrying out cotton carding and combing processes on the dried fibers;

(3) putting polyethylene glycol terephthalate, glycerol, terephthalic acid, sodium sulfonate and glycerol into a dryer for drying treatment, uniformly stirring, heating to 200 ℃, and adding a coupling agent and an antioxidant;

(4) adding the mixed slurry prepared in the step (3) into an esterification reactor, adding bamboo charcoal fibers, stirring and blending, reacting for 65min, adding into a screw extruder, melting to prepare a melt, controlling the temperature of a screw at 260 ℃, carrying out heat preservation reaction for 2h, then extruding strands, carrying out air blowing cooling, and then carrying out slicing, wire drawing and drafting treatment to obtain bamboo charcoal elastic fiber yarns;

(5) and (3) taking the regenerated cotton yarn fiber yarn obtained in the step (2) as a warp yarn and the bamboo charcoal elastic fiber yarn obtained in the step (4) as a weft yarn, and weaving to obtain the high-toughness blended cotton yarn fabric.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (4)

1. The high-toughness blended cotton yarn is formed by interweaving and weaving warp yarns and weft yarns, and is characterized in that the warp yarns are regenerated cotton yarn fibers and are composed of the following raw materials in parts by weight: 30-40 parts of waste cotton fabrics, 15-22 parts of cotton yarn leftover materials, 6-8 parts of polyvinyl alcohol, 3-5 parts of liquid paraffin, 3-4.5 parts of pure acrylic emulsion, 1-1.5 parts of sodium dodecyl benzene sulfonate, 3-5 parts of nano titanium dioxide and 3-5 parts of nano silicon dioxide;

the weft yarn is bamboo charcoal elastic fiber and is composed of the following raw materials in parts by weight: 12-20 parts of bamboo charcoal fiber, 25-35 parts of polyethylene glycol terephthalate, 25-40 parts of glycerol, 20-30 parts of terephthalic acid, 2-8 parts of sodium sulfonate, 5-10 parts of glycerol, 2-4 parts of a coupling agent and 2-4 parts of an antioxidant.

2. The high tenacity blended cotton yarn of claim 1, wherein: the pure acrylic emulsion is prepared from the following raw materials in parts by weight: 45-60 parts of methyl methacrylate, 30-50 parts of butyl acrylate, 3-5 parts of acrylic acid, 1.5-4.5 parts of potassium lauryl phosphate, 1.5-4.5 parts of alkyl polyoxyethylene ether, 0.5-1.5 parts of hydroxyethyl acrylate, 0.1-0.8 part of potassium persulfate, 0.1-0.5 part of sodium persulfate, 0.4-0.8 part of hydrogen peroxide, 0.5-1 part of sodium bisulfite and 80-120 parts of distilled water.

3. The high tenacity blended cotton yarn of claim 2, wherein: the preparation method of the pure acrylic emulsion comprises the following steps:

(1) adding part of potassium lauryl phosphate, alkyl polyoxyethylene ether and part of distilled water into an emulsifying cylinder at normal temperature and normal pressure, fully stirring for dissolving, sequentially adding methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl acrylate according to the weight part of the formula, and fully stirring for 15-30 minutes to prepare a pre-emulsion;

(2) adding the rest part of potassium lauryl phosphate and a proper amount of distilled water to the bottom of the kettle, fully stirring and dissolving, heating to 70-90 ℃, then adding potassium persulfate, adding 5% of the total amount of the pre-emulsion prepared in the step (1) to the bottom of the kettle, and reacting for 20-40 minutes to obtain seed emulsion;

(3) after the seed emulsion is completely reacted, the subsequent reaction temperature is 80-90 ℃, the residual pre-emulsion prepared in the step (1) and sodium persulfate are simultaneously dripped, the dripping is controlled for 2-3h, the temperature is kept for 25-45 min after the dripping is finished, and the temperature is kept at 80-90 ℃;

(4) after the heat preservation is finished, cooling to 70-80 ℃, simultaneously dropping hydrogen peroxide and sodium bisulfite separately for 20-40 minutes, preserving the heat for 10-40 minutes after the dropping is finished, then cooling to below 50 ℃, adding a pH regulator to regulate the pH value to 7.0-9.0, and finishing the filtration.

4. The method for manufacturing the high-tenacity blended cotton yarn according to claim 1, wherein: the method comprises the following steps:

(1) putting polyvinyl alcohol into a stirring kettle, adding 30 times of water, heating to 75 ℃, then adding liquid paraffin, uniformly stirring, cooling to 22-25 ℃, adding pure acrylic emulsion, sodium dodecyl benzene sulfonate, nano titanium dioxide and nano silicon dioxide, and stirring at the speed of 120-150r/min for 30min to form treated slurry;

(2) mixing waste cotton fabrics and cotton yarn leftover materials, then smashing the mixture by using a machine until the fiber length is 2-3mm, soaking the smashed mixed fibers into the treatment slurry prepared in the step (1) for 40-50min, then drying the mixture at the temperature of 80-90 ℃, and then preparing regenerated cotton yarn fiber yarns from the dried fibers through cotton carding and combing processes;

(3) putting polyethylene glycol terephthalate, glycerol, terephthalic acid, sodium sulfonate and glycerol into a dryer for drying treatment, uniformly stirring, heating to the temperature of 180 ℃ and 220 ℃, and adding a coupling agent and an antioxidant;

(4) adding the mixed slurry prepared in the step (3) into an esterification reactor, adding bamboo charcoal fibers, stirring and blending, reacting for 60-80min, adding into a screw extruder, melting to prepare a melt, controlling the temperature of a screw at 250-280 ℃, carrying out heat preservation reaction for 1-2h, then extruding strand silk, carrying out air blowing cooling, and carrying out slicing, wire drawing and drafting treatment to obtain bamboo charcoal elastic fiber yarns;

(5) and (3) taking the regenerated cotton yarn fiber yarn obtained in the step (2) as a warp yarn and the bamboo charcoal elastic fiber yarn obtained in the step (4) as a weft yarn, and weaving to obtain the high-toughness blended cotton yarn fabric.