WO2015062254A1

WO2015062254A1 - Bamboo charcoalviscose fibre and preparation method therefor

Info

Publication number: WO2015062254A1
Application number: PCT/CN2014/078224
Authority: WO
Inventors: 孙毅; 贺敏; 李蓉玲; 陈明付; 毛远航
Original assignee: 宜宾海丝特纤维有限责任公司; 宜宾丝丽雅股份有限公司
Priority date: 2013-10-31
Filing date: 2014-05-23
Publication date: 2015-05-07
Also published as: CN103556260A; CN103556260B

Abstract

The present invention provides bamboo charcoalviscose fibres and a preparation method therefor. The fibres are obtained by blending a bamboo charcoal slurry and viscose and then spinning, wherein the content of nanometer bamboo charcoal is 0.1％-10％ of the weight of the finished fibres; the specific criteria of the finished bamboo charcoalviscose fibres comprise: dry breaking strength of 1.6-3.5 cN/dtex; dry breaking elongation of 16-20％, dry strength variable coefficient of CV≤18％, dry breaking elongation variation coefficient of CV≤8％, defects ≤ 4 mg/100, a content of bamboo charcoal of 0.1-10％, an antimicrobial ratio ＞99.9％, an ammonia adsorption ＞50％, and colour fastness to washing of 4-5 level. The finished fibres prepared in the present invention has properties such as high strength, good adsorbability, an excellent antimicrobial effect, a uniform colour and strong fixation, and provide a bamboo charcoalviscose fibre raw material with good quality for preparing textiles.

Description

Bamboo charcoal viscose fiber and preparation method thereof

The present invention relates to the field of viscose fiber production technology, and in particular to a bamboo charcoal-containing viscose fiber and a preparation method thereof.

Background technique

Cellulose (cellulose) is a macromolecular polysaccharide composed of glucose, insoluble in water and common organic solvents, and is the main component of plant cell walls. Cellulose is the most widely distributed and most abundant polysaccharide in nature, accounting for more than 50% of the carbon content of the grain boundary. Cellulose is also the oldest and most abundant natural high molecule on earth. It is inexhaustible and the most precious natural renewable resource of mankind. Hemp, wheat straw, straw, bagasse, etc., are all rich sources of cellulose.

Bamboo charcoal is a kind of charcoal which is made from high-altitude bamboo of three years or more and is fired at a temperature of nearly one thousand degrees. Bamboo charcoal has a porous structure, and its molecules are fine and porous, and the quality is hard. It has strong adsorption capacity, can purify the air, eliminate odor, absorb moisture and mold, and inhibit bacteria and insects. Contact with the human body can absorb moisture and absorb sweat, promote blood circulation and metabolism, and relieve fatigue. After scientific refining and processing, it has been widely used in daily life. For example, textile fibers with activated carbon have become more and more popular.

The current patent applications for bamboo charcoal viscose fiber in the textile field are:

Patent No. 200310110113. 9 discloses a bamboo charcoal viscose fiber and a method for producing the same, the bamboo charcoal content is in terms of fiber weight percentage, and its ratio is X, 3% < X 20%, including a rubberizing process and spinning. The silk process is characterized in that: after the bamboo charcoal is selected, coarsely pulverized, dusted, and decontaminated, the bamboo charcoal fine powder and the dispersant S are prepared by pulverizing to a fineness of 竹0. 5 μm of the bamboo charcoal fine powder. In the bamboo charcoal water emulsion slurry process, the bamboo charcoal micropowder aqueous emulsion slurry is added to the viscose during the dissolution process at the end of the alkali cellulose yellowing, and after thorough mixing and grinding for 2-4 hours, a bamboo charcoal viscose long-fiber viscose having a viscosity of 25-35 seconds, a weight percentage of the nail fiber of 7. 5-9. 5%, a maturity of 9. 2 ± 2 ml; at the end of the alkali cellulose yellowing The singularity of the weight of the fiber is 8. 8 ± 0. 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 %, the degree of ripeness is 10 ± 0. 5ml of bamboo charcoal viscose staple fiber viscose; After charcoal were spun viscose rayon filament and staple fiber is obtained containing activated charcoal. The invention patent of the application No. 200510102775. 0 discloses a bamboo charcoal viscose fiber, a yarn and a production method thereof, wherein the viscose fiber contains bamboo charcoal particles having a particle size of less than 0.5 micrometer, and the bamboo charcoal particles occupy viscose fiber. 0重量。 0. 1-10%.

The invention patent of the application No. 200610037895. 1 discloses a method for producing bamboo charcoal viscose fiber and a bamboo charcoal viscose fiber produced by the method, the bamboo charcoal viscose fiber containing bamboo charcoal powder and bamboo vinegar. The method for producing the bamboo charcoal viscose fiber comprises a gum making step and a spinning step, and in the gum making step, the preparation of the viscose solution and the preparation of the carbon micropowder emulsion are carried out. In the spinning process, the viscose solution is uniformly mixed with the bamboo charcoal micropowder emulsion, and then sent to a spinning machine to form fibers.

The invention patent of application No. 201210499127. 3 discloses a production process of bamboo charcoal viscose fiber, comprising the steps of: dispersing bamboo charcoal micropowder and porphin cobalt microparticles in an organic solvent and stirring to obtain a mixed emulsion, and performing the pulping Impregnation, pressing and aging to obtain cellulose derived from natural plants: the cellulose is added to the mixed syrup to dissolve and defoam to obtain a spinning solution, and the spinning solution is extruded by a spinning pump in a coagulating liquid. Curing to obtain bamboo charcoal viscose fiber.

The above patent information shows that the bamboo powder is added to the spinning solution, and the particle size of the fine powder is about 0.5 μm, and the dispersion stability of the bamboo charcoal is poor. When the bamboo charcoal powder is in contact with the viscose, the agglomeration of the dispersed particles is likely to occur, resulting in production. In the process, the viscose is not easy to be filtered, the spinnability is lowered, the spinning is easy to break, and the mechanical and physical properties of the fiber are poor, which in turn affects the quality of the fiber and the antibacterial and hygroscopic properties of the bamboo charcoal.

Summary of the invention

The object of the present invention is to provide a bamboo charcoal viscose fiber and a preparation method thereof, which have well preserved the inherent antibacterial and antibacterial action of bamboo charcoal, and have good physical and mechanical properties and high strength, and provide a guarantee for the subsequent dyeing process. At the same time, the bamboo charcoal of the invention has good mixing property with the viscose, the bamboo charcoal has strong adsorption property, and the viscose spinning dope has good spinnability.

In order to achieve the above object, the technical solution adopted by the present invention is as follows:

1%〜10%, The content of the nanometer bamboo charcoal is 0.1%~10%, the weight of the finished fiber is 0. 1%~10%, according to the weight of the finished fiber. Specific indicators of the bamboo charcoal viscose fiber finished product include: dry breaking strength is 1. 6~3. 5cN/dte _X , dry elongation at break is 16~20%, dry strength coefficient of variation CV 18%, dry fracture elongation variation Coefficient CV 8%, 疵 point 4mg/100, bamboo charcoal content 0. 1~10%, antibacterial rate >99.9%, ammonia adsorption >50%, wash fastness 4-5; 〜1. The specific index of the bamboo charcoal viscose is 1. 6~2. 2cN/dte _X , dry elongation at break 16~20%, dry elongation elongation coefficient CV 8%, bamboo charcoal content 0. 1~ 10%, antibacterial rate > 99.9%, ammonia adsorption > 50%, wash fastness 4-5;

The specific indexes of the bamboo charcoal viscose staple fiber are: dry breaking strength 2. 2~3. 5cN/dte _X , dry elongation at break 16~20%, dry strength coefficient of variation CV 18%, 疵 point 4mg/100, bamboo charcoal content 0 1~10%, antibacterial rate > 99.9%, ammonia adsorption >50%, wash fastness 4-5.

The preparation method of the bamboo charcoal viscose filament comprises the following process steps:

Preparation of bamboo charcoal slurry: adding defoaming dispersing agent, bamboo charcoal powder, thickening agent and alkali in deionized water, stirring and grinding evenly;

B. Preparation of viscose: Using one or any combination of bamboo, cotton, hemp, grass and wood pulp as raw materials, the viscose is obtained by the processes of dipping, pressing, pulverizing, aging, yellowing, dissolving and ripening. And adding a denaturant in the dissolving process;

Preparation of C viscose spinning stock solution: The bamboo charcoal slurry is mixed with the weight of the finished fiber according to the weight of the finished fiber by 0.1 to 15%, mixed into the viscose in the ripening, and then uniformly degassed and filtered. Obtaining a viscose spinning solution;

D Spinning: The spinning dope of step C is extruded through a spinneret into a coagulation bath for spinning; E Post-treatment: The formed strands are washed, dried, and formed into a cylinder.

The adhesive described in the step B has a viscosity of 30 to 50 seconds, a ripening degree of 10 to 12 ml, a base content of 4 to 6%, and a fiber content of 8 to 9%.

In the spinning process described in the step D, the spinning speed is 70 to 90 m/min, the nozzle is stretched by 0 to 8%, and the tension is drawn to 0 to 8%; the composition of the coagulation bath is: sulfuric acid 120 to 140 g/L, sodium sulfate 220~260g/L, zinc sulfate 8~12g/L, and the temperature of the coagulation bath is 50~60°C.

In the post-treatment process described in step E, the drying temperature is controlled at 70 to 100 °C.

The preparation method of the bamboo charcoal viscose staple fiber comprises the following process steps:

1) Preparation of bamboo charcoal slurry: After adding non-foaming dispersing agent, bamboo charcoal powder, thickener and alkali in deionized water, it can be obtained by stirring and grinding evenly;

2) Preparation of viscose: Using one or any combination of bamboo, cotton, hemp, grass and wood pulp as raw materials, the adhesive is obtained by the processes of dipping, pressing, pulverizing, aging, yellowing, dissolving and ripening. And adding a denaturant in the dissolution process; 3) Preparation of viscose spinning stock solution: The bamboo charcoal slurry is mixed with the weight of the finished fiber according to the weight of the finished fiber by 0.1 to 10%, mixed into the viscose in the ripening, and then uniformly degassed and filtered. That is, a viscose spinning dope;

4) Spinning: the spinning dope of step C is extruded through a spinneret into a coagulation bath for spinning, and the formed strand is plasticized and drawn;

5) Post-treatment: The drawn yarn is cut, washed and dried.

5%。 The viscosity of the adhesive layer, the viscosity of 40~60 seconds, the degree of ripeness of 7~10ml, the alkali content of 4~6%, the fiber content of 8. 5~9. 5%.

In the spinning process described in the step 4), the spinning speed is 40 to 55 m/min, and the total drafting is 120 to 160%; the composition of the coagulation bath is: sulfuric acid 110 to 130 g/L, sodium sulfate 280 to 320 g/L, zinc sulfate 8~12g/L, the temperature of the coagulation bath is 50~60 °C.

In the post-treatment process described in the step 5), the drying temperature is controlled at 100 to 140 °C.

In the step of preparing the bamboo charcoal slurry in the step A or the step 1), the bamboo charcoal slurry is made of the following raw materials by weight:

Bamboo charcoal powder 5~25%

Bubble-free dispersant 1~2%

Thickener 1~5%

Alkali 4 to 6%

The balance is deionized water.

The bamboo charcoal pulp has a viscosity of 30 to 70 s, a alkali content of 4 to 6%, and a bamboo charcoal powder particle size of 0·8 μM.

The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is a cellulose thickener; and the base is sodium hydroxide.

The cellulosic thickener is selected from the group consisting of hydroxyethylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose or ethylhydroxyethylcellulose.

5%。 The 5%.

The singularity of the total weight of the coagulation bath is 0. 55~0. 65%; Dimercaptodimethyl chlorination 7%。 5%. The advantages of the invention are:

1. The bamboo charcoal pulp with a viscosity of 30~70s and a alkali content of 4~6%, bamboo powder powder particles of 0. 8 μ πι can be uniformly dispersed in the viscose, and the spinnability is high and sufficient. The quality and performance requirements of bamboo charcoal fiber are ensured.

2. In the spinning process, the temperature of the coagulation bath is controlled at 50~60°C, the spinning speed of the filament is controlled at 70~90m/mim, and the spinning speed of the short fiber is controlled at 40~55m/mim, which can effectively prevent the melt. The decrease in surface viscosity improves the rheological properties of the melt, thereby sufficiently improving the uniformity of the distribution of the bamboo charcoal powder.

The dry breaking strength of the bamboo charcoal fiber of the present invention is 1. 6~3. 5cN/dte _X , the dry elongation at break is 16 to 20%, the coefficient of variation of dry strength CV is 18%, and the coefficient of variation of dry elongation elongation is CV 8 %, 疵4mg/100, bamboo charcoal content 0. 1~10%, antibacterial rate >99.9%, ammonia adsorption >50%, wash fastness 4_5 grade, high strength, good adsorption performance, excellent antibacterial effect, The color is uniform and the color is strong, so the dyeing and textile processing performance is good.

4. In the post-treatment process step, the bleaching process in the traditional viscose fiber production process is reduced, the destruction of the antibacterial active substance in the bamboo charcoal is avoided, and the required functionality of the bamboo charcoal fiber product is ensured, that is, the natural antibacterial and antibacterial, The function of wet sweat absorption and odor removal provides high quality bamboo charcoal viscose fiber raw materials for textiles.

detailed description

Example 1

a bamboo charcoal viscose filament obtained by spinning a bamboo charcoal slurry and a viscose, wherein the nano bamboo charcoal content is 6% by weight of the finished fiber, and the bamboo charcoal viscose filament Specific indicators are: dry fracture strength 1. ScN/dtex, dry elongation at break 17%, dry fracture elongation coefficient CV 7. 5%, bamboo charcoal content 6%, antibacterial rate > 99.9%, ammonia adsorption > 50 %, wash fastness 4-5;

B. Preparation of viscose: The bamboo, cotton and hemp are used as raw materials to obtain viscose by dipping, pressing, pulverizing, aging, yellowing, dissolving and ripening, and adding a denaturant in the dissolving process;

Preparation of C viscose spinning stock solution: The bamboo charcoal slurry is 6% of the weight of the finished fiber For example, mixing into the viscose in the ripening, stirring uniformly, and then continuously defoaming and filtering, that is, obtaining a viscose spinning dope;

The adhesive described in the step B has a viscosity of 30 seconds, a ripening degree of l lml, a base content of 4%, and a fiber content of 8.5%. In the spinning process described in step D, the spinning speed is 80 m/min, the nozzle is stretched by 2%, and the tension is drawn by 5%; the composition of the coagulation bath is: sulfuric acid 120 g/L, sodium sulfate 230 g/L, zinc sulfate 10 g/ L, the temperature of the coagulation bath is

50 ° C.

In the post-treatment process described in step E, the drying temperature is controlled at 80 °C.

In the step of preparing the bamboo charcoal slurry according to the step A, the bamboo charcoal slurry is made of the following raw materials by weight:

Bamboo charcoal powder 20%

Non-foaming dispersant 1%

Thickener 2%

Alkali 4%

The balance is deionized water.

The bamboo charcoal pulp has a viscosity of 30 s, a alkali content of 4%, and a bamboo charcoal powder particle size of 0.8 μm. The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is hydroxyethyl cellulose; and the base is sodium hydroxide.

In the step of preparing the adhesive, the denaturing agent is a mercapto polyamine in an amount of 1% by weight based on the amount of α cellulose in the viscose.

55%; The dispersing agent is bis-decyl dimethyl methoxide. The disintegrating agent is a polyoxyalkylene diol, which accounts for 0.55% of the total weight of the coagulation bath. 5%。 The ammonium chloride, accounting for 0.5% of the total amount of the coagulation bath.

Example 2

The bamboo charcoal adhesive is long. The bamboo charcoal is 0. 1%, the bamboo charcoal adhesive is long. The bamboo charcoal is long. The specific index of the wire is: dry fracture strength 1. 9cN/dte _X , dry elongation at break 18%, dry fracture elongation coefficient of variation CV 7.2%, bamboo charcoal content 0.1%, antibacterial rate > 99. 9% , ammonia adsorption > 50%, wash fastness 4-5; The preparation method of the bamboo charcoal viscose filament comprises the following process steps:

B. Preparation of viscose: The cotton, wood pulp is used as raw material, and the viscose is obtained by the steps of dipping, pressing, pulverizing, aging, yellowing, dissolving, ripening, etc., and a denaturant is added in the dissolving process;

Preparation of C-viscose spinning dope: The bamboo charcoal slurry is mixed with the weight of the finished fiber according to the weight of the finished fiber, 0.1%, mixed into the viscose in the ripening, and then uniformly stirred, and then defoamed and filtered. Glue spinning stock solution;

The adhesive described in the step B has a viscosity of 50 seconds, a ripeness of 12 ml, a alkali content of 6%, and a nail fiber content of 8%. In the spinning process described in step D, the spinning speed is 70 m/min, the nozzle is stretched by 1%, and the tension is stretched by 8%; the composition of the coagulation bath is: sulfuric acid 130 g/L, sodium sulfate 250 g/L, zinc sulfate 12 g/ L, the temperature of the coagulation bath is

60 ° C.

In the post-treatment process described in step E, the drying temperature is controlled at 100 °C.

Bamboo charcoal powder 5%

Non-foaming dispersant 1. 5%

Thickener 1%

Alkali 5%

The balance is deionized water.

The bamboo charcoal pulp has a viscosity of 50 s, a alkali content of 5%, and a bamboo charcoal powder particle size of 0.8 μm. The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is carboxymethyl cellulose; and the base is sodium hydroxide.

5%。 The weighting agent is added in an amount of 0.5% by weight of the α cellulose in the viscose.

The 6% of the total weight of the coagulation bath is 0. 6%; the dispersing agent is a polyterpenic trimethyl group. The dispersing agent is a polyoxyalkylene glycol. Ammonium chloride, accounting for total coagulation bath 6%。 The amount of 0.6%.

Example 3

A bamboo charcoal viscose filament obtained by spinning a bamboo charcoal slurry and a viscose, the nano bamboo charcoal content being 10% by weight of the finished fiber, the bamboo charcoal viscose filament Specific indicators are: dry fracture strength 1. 6cN/dte _X , dry elongation at break 16%, dry fracture elongation coefficient CV 8%, bamboo charcoal content 10%, antibacterial rate >99.9%, ammonia adsorption >50% , washing color fastness 4-5;

B. Preparation of viscose: The bamboo, hemp and wood pulp are used as raw materials to obtain viscose by dipping, pressing, pulverizing, aging, yellowing, dissolving, ripening, etc., and a denaturant is added in the dissolving process;

Preparation of C viscose spinning stock solution: The bamboo charcoal slurry is mixed into the viscose in the matured powder according to the proportion of the bamboo charcoal in the proportion of 10% of the finished fiber, and then uniformly defoamed and filtered to obtain viscose spun. Silk stock solution;

The adhesive described in the step B has a viscosity of 40 seconds, a ripeness of 10 ml, a alkali content of 5%, and a nail fiber content of 9%. In the spinning process described in step D, the spinning speed is 90 m/min, the nozzle is stretched by 5%, and the tension is stretched by 7%; the composition of the coagulation bath is: sulfuric acid 140 g/L, sodium sulfate 220 g/L, zinc sulfate 8 g/ L, the temperature of the coagulation bath is 55

°C.

In the post-treatment process described in step E, the drying temperature is controlled at 70 °C.

Bamboo charcoal powder 25%

Bubble-free dispersant 2%

Thickener 5%

Alkali 6%

The balance is deionized water.

8 μ πι。 The bamboo charcoal granules having a viscosity of 50 s, the alkali content of 6%, the bamboo charcoal powder particles having a particle size of 0. 8 μ πι. The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is carboxymethyl cellulose; and the base is sodium hydroxide.

In the preparation step of the adhesive in the step B, the denaturant added was mercapto polyamine in an amount of 1.5% by weight based on the weight of the α cellulose in the viscose.

The dispersing agent is a polyoxyalkylene glycol, which accounts for 0.65% of the total weight of the coagulation bath, and the dispersing agent is polydecyl dimethyl methoxide. 7%。 The total amount of the coagulation bath is 0.7%.

Example 4

The 5% of the weight of the finished fiber is 2. 5%, the bamboo charcoal adhesive is long, and the weight of the finished bamboo fiber is 2.5%, the bamboo charcoal adhesive is long. The specific index of the wire is: dry rupture strength 2. 2cN / dte _X , dry elongation at break 20%, dry rupture elongation coefficient CV 7.1%, bamboo charcoal content 2. 5%, antibacterial rate > 99. 9% , ammonia adsorption > 50%, wash fastness 4-5;

B. Preparation of viscose: The bamboo and straw pulp are used as raw materials, and the viscose is prepared by the processes of dipping, pressing, pulverizing, aging, yellowing, dissolving, ripening, etc., and adding a denaturant in the dissolving process;

Preparation of C-viscose spinning dope: The bamboo charcoal slurry is mixed with the weight of the finished fiber by 2.5%, mixed into the viscose in the ripening, and then uniformly stirred, and then defoamed and filtered. Glue spinning stock solution;

The adhesive described in the step B has a viscosity of 45 seconds, a ripeness of 11. 5 ml, a base of 5.5%, and a fiber content of 8.7%.

In the spinning process described in step D, the spinning speed is 85 m/min, the nozzle is stretched by 3%, and the tension is stretched by 6%; the composition of the coagulation bath is: sulfuric acid 125 g/L, sodium sulfate 260 g/L, zinc sulfate l lg /L, the temperature of the coagulation bath was 57 °C.

In the post-treatment process described in step E, the drying temperature is controlled at 90 °C.

In the step of preparing the bamboo charcoal slurry according to the step A, the bamboo charcoal slurry is composed of the following weight percentage materials. production:

Bamboo charcoal powder 12%

Non-foaming dispersant 1. 2%

Thickener 3. 5%

Alkali 4. 8%

The balance is deionized water.

The bamboo charcoal pulp has a viscosity of 40 s, an alkali content of 4.8%, and a bamboo charcoal powder particle size of 0.8 μm. The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is carboxymethyl cellulose; and the base is sodium hydroxide.

In the step of preparing the adhesive, the denaturing agent added is mercapto polyamine in an amount of 1.3% by weight based on the weight of the α cellulose in the viscose.

The dispersing agent is a polyoxyalkylene glycol, which accounts for 0.58% of the total weight of the coagulation bath, and the dispersing agent is polydecyl dimethyl methoxide. The ammonium chloride group accounts for 0.65% of the total amount of the coagulation bath.

Example 5

5%, the bamboo charcoal viscose is short, the content of the nano-bamboo charcoal is 0.5% by weight of the finished fiber, the bamboo charcoal viscose is short. The specific index of the fiber is: dry fracture strength 2. 5cN/dte _X , dry elongation at break 18%, dry strength coefficient of variation CV 16%, 疵 point 4mg/100, bamboo charcoal content 0. 5%, antibacterial rate > 99. 9 %, ammonia adsorption > 50%, color fastness to washing 4_5.

2) Preparation of viscose: The bamboo, cotton and hemp pulp are used as raw materials to obtain viscose by dipping, pressing, pulverizing, aging, yellowing, dissolving, ripening, etc., and adding a denaturant in the dissolving process;

3) Preparation of viscose spinning dope: The bamboo charcoal slurry is mixed with the bamboo fiber in the proportion of 0.5% by weight of the finished fiber, mixed into the viscose in the ripening, and then uniformly degassed and filtered. Viscose spinning stock solution;

4) Spinning: the spinning dope of step C is extruded through a spinneret into a coagulation bath for spinning, and the formed strand is plasticized and drawn; 5) Post-treatment: The drawn yarn is cut, washed and dried.

The adhesive described in the step 2) has a viscosity of 40 seconds, a ripeness of 8 ml, a base content of 4%, and a nail fiber content of 8.5%. In the spinning process described in the step 4), the spinning speed is 45 m/min and the total drafting is 140%; the composition of the coagulation bath is: sulfuric acid 110 g/L, sodium sulfate 300 g/L, zinc sulfate 10 g/L, temperature of the coagulation bath It is 50 °C.

In the post-treatment process described in the step 5), the drying temperature is controlled at 110 °C.

Bamboo charcoal powder 8%

Non-foaming dispersant 1%

Thickener 3%

Alkali 4%

The balance is deionized water.

The bamboo charcoal pulp has a viscosity of 45 s, a alkali content of 4%, and a bamboo charcoal powder particle size of 0.8 μm. The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is hydroxyethyl cellulose; and the base is sodium hydroxide.

8%。 The weighting agent is added in an amount of 0.8% by weight of the α cellulose in the viscose.

55%; The dispersing agent is a polyterpenoid three. The denaturing agent is a polyoxyalkylene glycol, which is 0.55% by weight of the total weight of the coagulation bath. 5%。 The methyl chloride, accounting for 0.5% of the total amount of the coagulation bath.

Example 6

The bamboo charcoal viscose is short, the bamboo charcoal is 0.1% by weight of the finished fiber, and the bamboo charcoal is short. The specific index of the fiber is: dry fracture strength 3. 5cN/dte _X , dry elongation at break 20%, dry strength coefficient of variation CV 17%, 疵 point 4mg/100, bamboo charcoal content 0.1%, antibacterial rate > 99. 9 %, ammonia adsorption > 50%, color fastness to washing 4_5.

2) Preparation of viscose: cotton, hemp, wood pulp as raw material, impregnated, pressed, crushed, aged, a vitrification process is obtained by processes such as yellowing, dissolving, and aging, and a denaturant is added in the dissolving process;

3) Preparation of viscose spinning stock solution: The bamboo charcoal slurry is mixed with the weight of the finished fiber according to the weight of the finished fiber, 0.1%, mixed into the viscose in the ripening, and then uniformly stirred, then subjected to continuous defoaming and filtration. Viscose spinning stock solution;

5) Post-treatment: The drawn yarn is cut, washed and dried.

The adhesive described in the step 2) has a viscosity of 60 seconds, a ripeness of 7 ml, a alkali content of 5%, and a nail fiber content of 8.7%. In the spinning process described in the step 4), the spinning speed is 55 m/min and the total drafting is 160%; the composition of the coagulation bath is: sulfuric acid 130 g/L, sodium sulfate 280 g/L, zinc sulfate 8 g/L, temperature of the coagulation bath It is 55 ° C.

In the post-treatment process described in the step 5), the drying temperature is controlled at 140 °C.

Bamboo charcoal powder 6%

Non-foaming dispersant 1. 5%

Thickener 1%

Alkali 5%

The balance is deionized water.

The bamboo charcoal pulp has a viscosity of 70 s, a alkali content of 5%, and a bamboo charcoal powder particle size of 0.8 μm. The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is hydroxypropyl methylcellulose.

Carboxymethylcellulose; the base is sodium hydroxide.

5%。 The weight of the α-cellulose in the viscose is 0.5% by weight of the α-cellulose in the viscose.

The 6% of the total weight of the coagulation bath is 0. 6%; the dispersing agent is a polydecyl group, the dispersing agent is a polyoxyalkylene glycol. 6%。 The methyl chloride, accounting for 0.6% of the total amount of coagulation bath.

Example 7

A bamboo charcoal viscose staple fiber obtained by spinning a bamboo charcoal slurry and a viscose, wherein the content of the nano bamboo charcoal is 10% by weight of the finished fiber, and the bamboo charcoal viscose staple fiber Specific indicators are: dry Cracking strength 2. 2cN/dtex, dry elongation at break 16%, dry strength coefficient of variation CV 18%, defect 4mg/100, bamboo charcoal content 10%, antibacterial rate >99.9%, ammonia adsorption >50%, washable Color fastness 4-5.

2) Preparation of viscose: using bamboo, hemp and straw pulp as raw materials, obtaining viscose by dipping, pressing, pulverizing, aging, yellowing, dissolving, ripening, etc., and adding a denaturant in the dissolving process;

3) Preparation of viscose spinning solution: The bamboo charcoal slurry is mixed into the viscose in the ripening according to the proportion of the bamboo charcoal in the proportion of 10% of the finished fiber, and then uniformly defoamed and filtered to obtain the viscose. Spinning stock solution;

5) Post-treatment: The drawn yarn is cut, washed and dried.

The adhesive described in the step 2) has a viscosity of 40 seconds, a ripeness of 10 ml, a 6% alkali content, and a fiber content of 9.5%. In the spinning process described in the step 4), the spinning speed is 40 m/min and the total drafting is 120%; the composition of the coagulation bath is: sulfuric acid 120 g/L, sodium sulfate 320 g/L, zinc sulfate 12 g/L, temperature of the coagulation bath It is 60 ° C.

In the post-treatment process described in the step 5), the drying temperature is controlled at 120 °C.

Bamboo charcoal powder 23%

Bubble-free dispersant 2%

Thickener 5%

Alkali 6%

The balance is deionized water.

The bamboo charcoal pulp has a viscosity of 50 s, a alkali content of 6%, and a bamboo charcoal powder particle size of 0.8 μm. The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is hydroxyethyl cellulose; and the base is sodium hydroxide.

5%。 The weight of the α-cellulose in the viscose is 1.5% by weight of the α-cellulose in the viscose. 65%; The dispersing agent is a bis-indenyl group. The dispersing agent is a polyoxyalkylene diol, which accounts for 0.65% of the total weight of the coagulation bath. 7%。 The methyl chloride, accounting for 0.7% of the total amount of coagulation bath.

Example 8

A bamboo charcoal viscose staple fiber obtained by spinning a bamboo charcoal slurry and a viscose, wherein the nano bamboo charcoal content is 5% by weight of the finished fiber, and the bamboo charcoal viscose staple fiber Specific indicators are: dry fracture strength 3cN/dte _X , dry elongation at break 17%, dry strength coefficient of variation CV 17.5%, 疵 point 4mg/100, bamboo charcoal content 5%, antibacterial rate >99.9%, ammonia adsorption 〉50%, wash fastness 4-5.

2) Preparation of viscose: The bamboo and wood pulp are used as raw materials, and the viscose is obtained by the steps of dipping, pressing, pulverizing, aging, yellowing, dissolving, ripening, etc., and a denaturant is added in the dissolving process;

3) Preparation of viscose spinning solution: The bamboo charcoal slurry is mixed into the viscose in the ripening according to the proportion of 5% of the weight of the finished fiber, and then uniformly stirred, and then defoamed and filtered to obtain viscose. Spinning stock solution;

5) Post-treatment: The drawn yarn is cut, washed and dried.

The adhesive described in step 2) has a viscosity of 55 seconds, a ripeness of 8 ml, a base content of 4.5%, and a fiber content.

9%.

In the spinning process of the step 4), the spinning speed is 50 m / min, and the total drafting is 130%; the composition of the coagulation bath is: sulfuric acid 125 g / L, sodium sulfate 290 g / L, zinc sulfate 10. 5 g / L, coagulation bath The temperature is 58 ° C.

In the post-treatment process described in the step 5), the drying temperature is controlled at 100 °C.

Bamboo charcoal powder 18%

Non-foaming dispersant 1. 3%

Thickener 3% Alkali 5.5%

The balance is deionized water.

The bamboo charcoal pulp has a viscosity of 30 s, an alkali content of 5.5%, and a bamboo charcoal powder particle size of 0.8 μm. The non-foaming dispersing agent is a sodium polyacrylate salt; the thickening agent is ethyl hydroxyethyl cellulose; the alkali

Claims

claims

1. A bamboo charcoal viscose fiber, characterized in that: the viscose fiber is obtained by mixing bamboo charcoal slurry and viscose and then spinning, and the content of the nano bamboo charcoal is 0.1%~10% of the weight of the finished fiber. , the specific indicators of the finished bamboo charcoal viscose fiber include: dry breaking strength of 1.6~3.5cN/dt _ex , dry breaking elongation of 16~20%, dry strength variation coefficient CV 18%, dry breaking elongation Long coefficient of variation CV 8%, defects 4mg/100, bamboo charcoal content 0.1~10%, antibacterial rate >99.9%, ammonia adsorption >50%, color fastness to washing 4-5 levels; among them:

The specific indicators of bamboo charcoal viscose filament are: dry breaking strength 1.6~2.2cN/ _dteX , dry breaking elongation 16~20%, dry breaking elongation variation coefficient CV 8%, bamboo charcoal content 0.1~ 10%, antibacterial rate > 99. 9%, ammonia adsorption > 50%, washability color fastness level 4-5;

The specific indicators of bamboo charcoal viscose staple fiber are: dry breaking strength 2.2~3.5cN/ _dte . 1~10%, antibacterial rate > 99. 9%, ammonia adsorption > 50%, washability color fastness level 4-5.

2. The preparation method of bamboo charcoal viscose fiber according to claim 1, characterized in that: the preparation process steps of the bamboo charcoal viscose filament are as follows:

A. Preparation of bamboo charcoal slurry: Add non-foaming dispersant, bamboo charcoal powder, thickener and alkali to deionized water, stir and grind evenly;

B Preparation of viscose: Using one or any combination of bamboo, cotton, hemp, grass, and wood pulp as raw materials, viscose is prepared through processes such as dipping, pressing, crushing, aging, yellowing, dissolving, and maturing. And add denaturant in the dissolution process;

C. Preparation of viscose spinning stock solution: Mix the bamboo charcoal slurry into the mature viscose at a ratio of 0.1 to 10% of the weight of the finished fiber, stir evenly, and then undergo continuous degassing and filtration, that is Obtain viscose spinning stock solution;

D Spinning: Extrude the spinning solution from step C through the spinneret into the coagulation bath for spinning and shaping; E Post-processing: The formed filaments are washed, dried and formed into cylinders.

3. The preparation method of bamboo charcoal viscose fiber according to claim 2, characterized in that: the viscose described in step B has a viscosity of 30 to 50 seconds, a maturity of 10 to 12 ml, and an alkali content of 4 to 6%. A fiber content is 8~9%.

4. The method for preparing bamboo charcoal viscose fiber according to claim 2, characterized in that: in step D In the spinning process, the spinning speed is 70~90m/min, the nozzle stretching is 0~-8%, and the tension draft is 0~8%; the coagulation bath composition is: sulfuric acid 120~140g/L, sodium sulfate 220~260g /L, zinc sulfate 8~12g/L, the temperature of the coagulation bath is 50~60°C.

5. The method for preparing bamboo charcoal viscose fiber according to claim 1, characterized in that: in the post-processing process described in step E, the drying temperature is controlled at 70~100°C.

6. The preparation method of bamboo charcoal viscose fiber according to claim 1, characterized in that: the preparation process steps of the bamboo charcoal viscose staple fiber are as follows:

1) Preparation of bamboo charcoal slurry: Add non-foaming dispersant, bamboo charcoal powder, thickener and alkali to deionized water, stir and grind until uniform;

2) Preparation of viscose: Use one or any combination of bamboo, cotton, hemp, grass, and wood pulp as raw materials, and prepare viscose through processes such as dipping, pressing, crushing, aging, yellowing, dissolving, and maturing. , and add denaturant in the dissolution process;

3) Preparation of viscose spinning stock solution: Mix the bamboo charcoal slurry into the mature viscose at a ratio of 0.1 to 15% of the weight of the finished fiber, stir evenly, and then undergo continuous degassing and filtration. That is, the viscose spinning stock solution is obtained;

4) Spinning: The spinning solution in step C is extruded through the spinneret into the coagulation bath for spinning and shaping, and the formed filaments are plasticized and drawn;

5) Post-processing: The drawn filament can be obtained by cutting, washing and drying.

7. The preparation method of bamboo charcoal viscose fiber according to claim 6, characterized in that: the viscose described in step 2) has a viscosity of 40 to 60 seconds, a maturity of 7 to 10 ml, and an alkali content of 4 to 6% , methyl fiber content 8. 5 ~ 9. 5%.

8. The preparation method of bamboo charcoal viscose fiber according to claim 6, characterized in that: in the spinning process described in step 4), the spinning speed is 40~55m/min, the total draft is 120~160% _; solidification The bath composition is: sulfuric acid 110~130g/L, sodium sulfate 280~320g/L, zinc sulfate 8~12g/L, and the temperature of the coagulation bath is 50~60°C.

9. The method for preparing bamboo charcoal viscose fiber according to claim 6, characterized in that: in the post-processing process described in step 5), the drying temperature is controlled at 100~140°C.

10. The method for preparing bamboo charcoal viscose fiber according to claim 2 or 6, characterized in that: in the step of preparing the bamboo charcoal slurry in step A or step 1), the bamboo charcoal slurry consists of the following weight percentages: Original production:

Bamboo charcoal powder 5~25%

Non-foaming dispersant 1~2%

Thickener 1~5%

Alkali 4~6%

The balance is deionized water.

11. The preparation method of bamboo charcoal viscose fiber according to claim 10, characterized in that: the viscosity of the bamboo charcoal slurry is 30~70s, the alkali content is 4~6%, and the particle size of the bamboo charcoal powder particles is 0.8 μπι.

12. The preparation method of bamboo charcoal viscose fiber according to claim 10, characterized in that: the non-foaming dispersant is polyacrylic acid sodium salt; the thickener is a cellulose thickener; the alkali is Sodium hydroxide.

13. The method for preparing bamboo charcoal viscose fiber according to claim 12, characterized in that: the cellulose thickener is selected from the group consisting of hydroxyethyl cellulose, hydroxypropyl methyl cellulose, and carboxymethyl cellulose. or ethylhydroxyethylcellulose.

14. The preparation method of bamboo charcoal viscose fiber according to claim 2 or 6, characterized in that: in the preparation step of viscose in step B or step 2), the denaturant added is alkyl polyamine, which The addition amount is 0.5~1.5% of the weight of α-cellulose in viscose.

15. The method for preparing bamboo charcoal viscose fiber according to claim 2 or 6, characterized in that: a denaturant and a dispersant are added to the coagulation bath described in step D or step 4), and the denaturant is Polyoxyalkylene glycol accounts for 0.55~0.65% of the total weight of the coagulation bath; the dispersant is bis-alkyl dimethyl ammonium chloride, poly-alkyl trimethyl ammonium chloride or poly-alkyl dimethyl ammonium chloride Methyl ammonium chloride accounts for 0.5~0.7% of the total amount of coagulation bath.