Wool / cotton / conductive fiber blended yarn and preparation method and application thereof

Abstract

The invention belongs to the technical field of textile, and particularly relates to a wool / cotton / conductive fiber blended yarn and a preparation method and application thereof. The preparation method of the blended yarn comprises the following steps: respectively dyeing the wool and the long stapled cotton, and maintaining the dyed wool; mixing the cured wool with long stapled cotton and conductive fibers, and mixing to obtain a mixture; the mixture is subjected to carding, gilling and drawing, and a drawn product is prepared; and roving, spinning, spooling, doubling, twisting, steaming and shaping the drawn product to obtain the wool / cotton / conductive fiber blended yarn. By optimizing the dyeing process and combining the fine semi-spinning process, the quality of the yarn is improved. The color purity of the finished fabric and various color fastness such as washing resistance, solarization resistance and friction resistance of the fabric are guaranteed, and various indexes such as fuzzing resistance, pilling resistance and wear resistance of the finished fabric are met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textiles, and particularly relates to a wool / cotton / conductive fiber blended yarn and a preparation method and application thereof. BACKGROUND

[0002] Wool is an excellent natural animal fiber textile raw material, and the fiber is soft and elastic, has excellent warmth retention, moisture absorption capacity and soft luster, and is suitable for making high-grade clothes suitable for all seasons, as well as decorative and industrial fabrics. Xinjiang long-staple cotton benefits from sufficient sunshine in the production area, and has high fiber maturity, white color, less impurities, and good uniformity and uniformity of fineness. These characteristics endow the fabric with excellent softness, air permeability, easy dyeing and good color fastness. However, these two fibers also have their own limitations, such as the scale structure of wool which leads to significant shrinkage, as well as short fiber length and low strength. Cotton fiber has long length and good hydrophilicity, but has high rigidity. These differences in characteristics make it difficult to process and operate in the pretreatment and dyeing process.

[0003] Although the blending process can combine the warmth, elasticity, drape of wool and the moisture absorption, air permeability, dryness and cost advantage of Xinjiang long-staple cotton. However, when the two are blended, the ends of Xinjiang long-staple cotton fibers are easy to hook the wool scales, resulting in easy pilling of the fabric after wearing and rubbing, and the overall shrinkage is difficult to control. Although the addition of Xinjiang long-staple cotton can inhibit the shrinkage tendency of wool to some extent, improper processing may trigger the differential shrinkage of the two fibers. To obtain a blended fabric of wool and Xinjiang long-staple cotton with ideal uniformity, color fastness, dimensional stability, durability, hand feeling, and effectively inhibit pilling and cost, is still the core problem of blending the two. SUMMARY

[0004] The purpose of the present application is to provide a wool / cotton / conductive fiber blended yarn and a preparation method and application thereof, so as to overcome the shortcomings of the prior art. By optimizing the dyeing method and fine spinning process, domestic wool, Xinjiang long-staple cotton sliver and conductive fiber are blended to obtain a fabric with the advantages of uniform dyeing, high toughness, good resilience, long-wearing resistance to deformation and wear resistance. Long-term wear can still maintain good appearance and performance. At the same time, the prepared fabric has excellent warmth retention and good air permeability, can discharge the moisture in the body, keep the body dry and comfortable, and has good antistatic performance.

[0005] In order to achieve the above purpose, the technical scheme of the present application is as follows: In a first aspect, the present application provides a preparation method of a wool / cotton / conductive fiber blended yarn, comprising the following steps: dyeing the wool and the long-staple cotton respectively, and carrying out life cultivation on the dyed wool; The wool after the health care is mixed with long-staple cotton and conductive fiber to perform blending, and a blended material is prepared; The blended material is subjected to carding, gilling and drawing to prepare a drawn product; The drawn product is subjected to roving, spinning, winding, doubling, twisting and yarn setting to obtain wool / cotton / conductive fiber blended yarn.

[0006] In some other embodiments, the wool, long-staple cotton and conductive fiber are mixed in a mass ratio of (70-75):(24-30):(1-2). Specifically, the mass ratio of the wool, long-staple cotton and conductive fiber is 70:29:1, or 72:27:1, or 73:25:2, or 75:24:1.

[0007] The wool has an average length of 40-50 mm and a fineness of 19.5-21.3 μm; The long-staple cotton has an average length of 35-39 mm and a fineness of 14-16 μm; The conductive fiber is nylon-based conductive fiber with a specification of 3D x 51 mm.

[0008] Specifically, the wool is selected from 66-70S domestic wool, which has an average length of 40, 45 or 50 mm and an average fineness of 19.5, 20, 21 or 21.3 μm. Domestic wool has certain advantages in quality, price, adaptability, resources, warmth retention performance, ecological environmental protection and the like, and is an important raw material indispensable in textile production. These advantages make domestic wool have broad development prospects and competitiveness in the market.

[0009] The long-staple cotton is selected from Xinjiang long-staple cotton, which has an average length of 35, 36, 37, 38 or 39 mm and a fineness of 14, 15 or 16 μm. Xinjiang long-staple cotton has excellent performance in fiber length, fineness, strength, gloss, drape, durability, wrinkle resistance, ductility, elasticity and environmental protection and the like. Compared with Pima cotton, Xinjiang long-staple cotton has more advantages in fiber length and fineness, and is less prone to static electricity, and is suitable for making high-end textiles with higher requirements for fiber quality.

[0010] The conductive fiber is selected from nylon-based conductive fiber with a specification of 3D x 51 mm. The addition of the conductive fiber can effectively improve the static influence of the yarn, making the wearing more comfortable and free.

[0011] In some other embodiments, the dyeing process of wool is as follows: the auxiliary agent and the dye are sequentially added into the dyeing vat under normal temperature and pressure; the vat cover is closed, air pressure is injected into the vat, and the temperature is raised to 80-85℃ at a rate of 1.0-1.5 ℃ / min, and then the vat is kept at the temperature for 40-70 min before draining; the pH value is adjusted to 8.0-8.5 by alkali washing, the washing time is 15-25 min, the wool is rinsed with warm water for 10-20 min, and then rinsed with cold water until clean.

[0012] The dyeing process of long-staple cotton is as follows: the Norwicklon dye is added into the dyeing vat under normal temperature and pressure; the presolubilized sodium sulphate is sequentially added; the vat cover is closed, air pressure is injected into the vat, and the temperature is raised to 50-55℃ at a rate of 2.0 ℃ / min, and then the vat is kept at the temperature for 20-30 min, the pure soda is sequentially added, the vat is kept at the temperature for 30-40 min before draining; the low-temperature soaping agent TF-230HF is added, and the vat is soaped for 20-30 min, the vat is rinsed with warm water for 10-20 min, and then rinsed with cold water until clean, and the environment-friendly fixing agent Abi Fix ECO is added.

[0013] In some other embodiments, the dyeing process of wool uses brominated acrylamide as a low-temperature dye, and uses ethoxy fatty acid ammonium derivative ALBEGLA-B as a low-temperature leveling agent; and uses diethylene glycol, tallow alkyl ethoxylated amine as the main Millerlan LTD as a low-temperature dyeing auxiliary agent. In the dyeing process of long-staple cotton, Norwicklon is used as a dye, and TF-230HF is used as a low-temperature anti-staining soaping agent; in the dyeing process of wool and long-staple cotton, air is injected to pressurize to a pressure of 1.5-1.7 bar, and the temperature of the warm water is 45-50 ℃.

[0014] In some other embodiments, the aftercare of wool is to add lanolin oil, antistatic agent and water to the dyed wool for 24-48 h. Specifically, in the aftercare of wool, 2-3% antistatic agent, 0.5-1.0% lanolin oil and 10-13% water are added to the dyed wool. The antistatic agent is not specifically limited, and a conventional antistatic agent can be used. The aftercare of long-staple cotton combed sliver is to add water to the long-staple cotton combed sliver for 24-48 h, and the moisture regain is 10-15%. Alternatively, the moisture regain is 10%, 12%, 14% or 15%. The aftercare of conductive fiber is to add an antistatic agent to the dyed conductive fiber for 24-48 h. The type of antistatic agent is not specifically limited, and a conventional antistatic agent can be used. The conductive fiber is nylon-based conductive fiber with a specification of 3D x 51 mm.

[0015] In some other embodiments, the ginning of the mixture is 20 g / 5m-25 g / 5m, the doffer speed is 20 r / min-25 r / min, the cylinder speed is 250 r / min-280 r / min, the five-point spacing between the cylinder and the flat is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, 0.32 mm, and the spacing between the taker-in and the licker-in is 0.3-0.5 mm. Specifically, the ginning of the mixture is 20 g / 5m, 22 g / 5m, 24 g / 5m, 25 g / 5m, the doffer speed is 20 r / min, 22 r / min, 24 r / min, 25 r / min, the cylinder speed is 250 r / min, 260 r / min, 270 r / min, 280 r / min. The cotton fiber is thin and soft, and is easy to produce neps in the process of carding. The spacing between the cylinder and the flat is preferably small to avoid the fiber rubbing each other to produce a large number of neps. At the same time, the length of the wool should be considered, and the spacing cannot be too small, otherwise the fiber is easy to be damaged, broken, and the short fiber content is increased, resulting in an increase in the number of neps.

[0016] In some other embodiments, the draft ratio of the first needle in the gilling is 6-7 times, the ginning weight is 18.0 g / 5m-20.0 g / 5m, the spacing between the needle plate and the front roller is 25-26 mm, and the speed is 35-40 m / min. The draft ratio of the second needle is 6-7 times, the ginning weight is 18.0 g / 5m-20.0 g / 5m, the spacing between the needle plate and the front roller is 25-26 mm, and the speed is 35-40 m / min. Specifically, the draft ratio of the first needle is 6, 6.5, 7 times, the ginning weight is 18.0 g / 5m, 19.0 g / 5m, 20.0 g / 5m, the spacing between the needle plate and the front roller is 25, 26 mm, and the speed is 35, 36, 37, 38, 40 m / min. The draft ratio of the second needle is 6, 6.5, 7 times, the ginning weight is 18.0 g / 5m, 19.0 g / 5m, 20.0 g / 5m, the spacing between the needle plate and the front roller is 25, 26 mm, and the speed is 35, 36, 37, 38, 40 m / min.

[0017] In some other embodiments, the feeding in the doubling is 6-8 roots, the draft ratio is 8.0-8.5 times, the spacing is 25x30 mm, the ginning weight is 15 g / 5m-20 g / 5m, and the speed is 80-85 m / min. The feeding in the second doubling is 7-8 roots, the draft ratio is 8.0-8.5 times, the ginning weight is 15 g / 5m-20 g / 5m, and the speed is 80-85 m / min. The feeding in the third doubling is 7-8 roots, the draft ratio is 8.0-8.5 times, the ginning weight is 15 g / 5m-20 g / 5m, and the speed is 80-85 m / min.

[0018] Specifically, for one drawing, 6, 7 or 8 feedings are adopted, the drawing multiple is 8.0, 8.1, 8.5, the gauge is 25x30 mm, the sliver weight is 15 g / 5m, 16 g / 5m, 18 g / 5m, 20 g / 5m, the speed is 80, 82, 84, 85 m / min; for two drawing, 7 or 8 feedings are adopted, the drawing multiple is 8.0, 8.2, 8.4, 8.5, the sliver weight is 15 g / 5m, 16 g / 5m, 18 g / 5m, 20 g / 5m, the speed is 80, 82, 84, 85 m / min; for three drawing, 7 or 8 feedings are adopted, the drawing multiple is 8.0, 8.2, 8.4, 8.5, the sliver weight is 15 g / 5m, 16 g / 5m, 18 g / 5m, 20 g / 5m, the speed is 80, 82, 84, 85 m / min.

[0019] Preferably, for one drawing, 7 feedings are adopted, the drawing multiple is 8.1, the gauge is 25x30 mm, the sliver weight is 16 g / 5m; for two drawing and three drawing, 8 feedings are adopted, the drawing multiple is 8.0, the sliver weight is 16 g / 5m, the speed is 80 m / min.

[0020] In some other embodiments, the drawing multiple of the roving is 6-8.5, the sliver weight is 0.4-0.5 g / m; the speed is 9.0-9.5 m / min. Specifically, the drawing multiple of the roving is 6, 7, 8, 8.5, the sliver weight is 0.4, 0.45, 0.5 g / m; the speed is 9.0, 9.1, 9.2, 9.4, 9.5 m / min.

[0021] The spun yarn is spun by using the siro spinning, the drawing multiple is 30-35, the twist is 680-840 T / M; the speed is 10.0-11.0 m / min, the spun yarn gauge is (44-47)x(49-53) mm. Specifically, the drawing multiple is 30, 32, 34, 35, the twist is 680, 700, 720, 740, 760, 780, 800, 820, 840 T / M; the speed is 10.0, 10.3, 10.5, 10.8, 11.0 m / min.

[0022] The winding speed in the winding machine is 650-750 m / min, the short thick section is 2.40-2.50, the length of the short thick section is 2.0-2.5 cm, the long thick section is 1.3-1.35, the length of the long thick section is 30-35 cm, the thin section is 25.0-30.0, the length of the thin section is 30-35 cm, the long error branch is -13% to +13%, 12 m, and the short error branch is -20% to +20%, 2 m. Specifically, the winding speed in the winding machine is 650, 680, 700, 720, 740, 750 m / min, the short thick section (DS) is 2.40, 2.45, 2.50, the length of the short thick section (LS) is 2.0, 2.2, 2.4, 2.5 cm, the long thick section (DL) is 1.3, 1.31, 1.32, 1.33, 1.34, 1.35, the length of the long thick section (LL) is 30, 31, 32, 33, 34, 35 cm, the thin section (D) is 25.0, 26, 27, 28, 29, 30.0, and the length of the thin section is 30, 31, 32, 33, 34, 35 cm.

[0023] Preferably, the winding speed is 700 m / min, the short thick section DS is 2.40, the length of the short thick section LS is 2.2 cm, the long thick section DL is 1.32, the length of the long thick section LL is 30 cm, the thin section D is 25.00, and the length L is 30 cm.

[0024] The winding speed is 450-500 m / min. Specifically, the winding speed is 450, 480, 500 m / min, and the tension and formation of the yarn need to be controlled in the winding process. Preferably, the winding speed is 480 m / min.

[0025] The spindle speed of the twisting machine is 5000-6000 r / min, and the designed twist is 450-480 T / M, and the S twist direction. Specifically, the spindle speed of the twisting machine is 5000, 5200, 5400, 5500, 6000 r / min, and the designed twist is 450, 460, 470, 480 T / M. Preferably, the spindle speed is 5500 r / min, and the designed twist is 460 T / M.

[0026] The temperature of the steaming machine is 60-70℃, the holding time is 25-35 min, and the pressure is 120-180 mb. Specifically, the temperature of the steaming machine is 60, 65, 70℃, the holding time is 25, 30, 35 min, and the pressure is 120, 140, 150, 160, 180 mb. Preferably, high-temperature steaming is adopted, the temperature is 65℃, the holding time is 30 min, and the pressure is 150 mb.

[0027] In a second aspect, the present application provides a wool / cotton / conductive fiber blended yarn prepared by the method for preparing the wool / cotton / conductive fiber blended yarn according to the first aspect.

[0028] Domestic wool, Xinjiang long-staple cotton combed sliver and conductive fiber are blended, fully reflecting the use of domestic textile raw materials to make garment products, the fabric has high toughness, good resilience, and is not easy to deform after long wear. Wear-resistant and durable, it can still maintain good appearance and performance after long-term use. It has excellent warmth retention performance and good air permeability, can discharge body moisture, and keep the body dry and comfortable.

[0029] In a third aspect, the present application provides the use of the wool / cotton / conductive fiber blended yarn of the second aspect in garments.

[0030] The present application adopts special fiber combination and structure design, so that air can circulate inside the garment, timely discharge sweat and moisture, and keep the body dry, thereby meeting the demand of the garment for air permeability and moisture absorption.

[0031] The present application has the following advantages: (1) The present application uses wool, long-staple cotton and conductive fiber as raw materials, fully utilizes the high strength of long-staple cotton and the characteristics of wool, breaks through the contradiction between strength and elongation of traditional blended yarn, adds conductive fiber to build an electric charge dissipation network, and improves the static influence of the yarn. By optimizing the dyeing process and combining with the fine semi-spinning process, the spinning advantages of wool spinning and cotton spinning are fully utilized, and the quality of the yarn is improved. While ensuring the color purity of the finished fabric, the water washing resistance, sunlight resistance, friction resistance and other color fastness of the fabric are met, and the anti-pilling, wear resistance and other indicators of the finished fabric are also met.

[0032] (2) The raw materials used in the present application have the following advantages: domestic wool fiber has advantages in quality, price, adaptability, resources, warmth retention performance, ecological protection, etc. Xinjiang long-staple cotton has good maturity, color whiteness, less impurities, good uniformity and fineness of fibers, making the fabric have good softness and air permeability, easy to color and good color fastness. Blending wool and Xinjiang long-staple cotton can fully utilize the advantages of both, ensure comfort and environmental protection, and the added conductive fiber further improves the static influence of the yarn, making the wearing more comfortable and free. High-quality and high-technology products meet the increasingly high consumer demand.

[0033] (3) The high-pressure low-temperature dyeing process of the present application compensates for the deficiency of low temperature by pressure, protects the fibers while achieving efficient dyeing, especially suitable for high-end natural fibers and environmentally friendly textiles. By reducing the temperature, the purpose of saving steam and reducing energy consumption is achieved. At the same time, the hand feeling and loft of wool and long-staple cotton after dyeing are improved compared with traditional dyeing, the yarn evenness is uniform, the yarn clothing is fluffy and full, and the elasticity is good.

[0034] (4) The wool / cotton / conductive fiber blended yarn prepared by the method has reached the standard requirements of clothing products in terms of color fastness, pilling and dimensional stability. The clothing products made of domestic textile raw materials have high fabric toughness, good resilience, are not easy to deform after long wearing, are wear-resistant and durable, can maintain good appearance and performance after long wearing, have excellent warmth retention and good air permeability, can discharge moisture in the body, keep the body dry and comfortable, and have good anti-static performance, and are the first choice of clothing. BRIEF DESCRIPTION OF DRAWINGS

[0035] The drawings accompanying the specification of the present application form a part thereof, serve to further provide a further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation of the present application.

[0036] Figure 1 The preparation method flow chart of the wool / long-staple cotton / conductive fiber blended yarn in Example 1 of the present application is shown in the figure. Figure 2 The wool dyeing process flow chart in Example 1 and Comparative Example 1 of the present application is shown in the figure; wherein a is the process in Example 1, and b is the process in Comparative Example 1. Figure 3 The long-staple cotton dyeing process flow chart in Comparative Example 1 and Comparative Example 1 of the present application is shown in the figure; wherein a is the process in Example 1, and b is the process in Comparative Example 1. DETAILED DESCRIPTION

[0037] The product of the present application is a wool, cotton and conductive fiber blended yarn, which is a clothing police uniform fabric yarn. Since the fabric has a deep color, how to ensure the color purity of the finished fabric, the water washing resistance, the sunlight resistance, the rubbing resistance and other color fastness of the fabric, and the anti-pilling, wear resistance and other indicators of the finished fabric have been a technical difficulty in the industry.

[0038] The present application provides a preparation method of a wool / cotton / conductive fiber blended yarn, which comprises the following steps: The wool and the long-staple cotton are dyed respectively, and the dyed wool is subjected to life preservation; The life-preserved wool is mixed with the long-staple cotton and the conductive fiber to perform wool blending, so as to prepare a mixture; The mixture is subjected to wool combing, gilling and drawing, so as to prepare a drawn product; The drawn product is subjected to roving, spinning, winding, doubling, twisting and yarn setting, so as to obtain the wool / cotton / conductive fiber blended yarn.

[0039] In order for those skilled in the art to more clearly understand the technical solutions of the present application, the technical solutions of the present application will be described in detail below in combination with specific examples and comparative examples.

[0040] Example 1 A wool / cotton / conductive fiber blended yarn and a preparation method thereof, as shown in Figure 1 comprises the following steps: I. Raw material index: The product of this embodiment is a wool / cotton / conductive fiber blended yarn, which is mixed by wool, long-staple cotton and conductive fiber in a mass ratio of 70:29:1. Among them, the wool selects 66-70S domestic wool, the length is 45 mm, and the fineness is 20 μm; the long-staple cotton selects Xinjiang long-staple cotton, the fiber length is 36 mm, and the fineness is 15 μm; the conductive fiber selects nylon-based conductive fiber, the specification is 3D x 51 mm.

[0041] II. Preparation method, as shown in Figure 1 comprises the following steps 1. The dyeing process specifically comprises the following steps: The dyeing raw material is low-temperature lanasol dye, acetic acid 3.5 wt% (adjusting pH=4.5), Albegal B 1.5 g / L, Albicel FFA-01 0.5 g / L, and the amount of low-temperature lanasol dye is controlled according to the color depth, generally 0.01 wt% for light color and 6 wt% for dark color.

[0042] Under normal temperature and pressure, Albicel FFA (penetration defoaming agent), Milleran LTD (low-temperature auxiliary), Albegal B (amphoteric auxiliary, leveling, deepening) are added in turn, and the machine is operated for 5 min, then the dye is added and operated for 10 min; the cylinder cover is closed, air pressure is injected into the cylinder to 1.5 bar, and at the same time, the temperature is raised to 85 °C at 1.5 °C / min, and after 60 min of insulation, the water is drained; 80 °C alkali washing (pH value 8.0) for 20 min, washing with warm water (50 °C) for 15 min, and then washing with cold water until clean.

[0043] Brominated acrylamide is selected as a low-temperature dye for wool dyeing, and by adjusting the dyeing parameters such as dyeing temperature, holding time and heating rate, ALBEGLA-B, a hydroxyethylated fatty acid ammonium derivative, is selected as a low-temperature leveling agent, so that the wool scale layer is fully expanded, the dye penetrates easily, and the wool reactive dye reacts with the amino or hydroxyl groups on the wool fiber through its active groups to form a covalent bond, thereby firmly binding on the fiber. Achieve to improve the dye absorption rate while reducing the accumulation of wool fiber surface layer, improve the color fastness of soaping and rubbing.

[0044] The long-staple cotton adopts a high-pressure low-temperature dyeing process as shown in Figure 3 , which specifically comprises the following steps: The dyeing raw material is Novacron dye (model X), high-concentration penetrant FJ-103 1 g / L, anhydrous sodium sulfate 60 g / L, soda 15 g / L, and low-temperature anti-soaping agent TF-230HF 2 g / L.

[0045] At normal temperature and pressure, Novacron dye is added to the dyeing vat and operated for 10 min; then pre-dissolved anhydrous sodium sulfate is added in batches (anhydrous sodium sulfate is added in three batches, with 1 / 3 of the total amount added each time), and operated for 10 min; the vat cover is closed, air pressure is added to the vat to 1.5 bar, air pressure is added to the vat at the same time, and the temperature is raised to 55℃ at a rate of 2.0℃ / min, and kept for 30 min; anhydrous sodium sulfate is added in batches (anhydrous sodium sulfate is added in three batches, with 1 / 3 of the total amount added each time), and kept for 30 min before draining; low-temperature soaping agent TF-230HF is added, and soaping is carried out at 80℃ for 20 min, then rinsed with warm water (50℃) for 15 min, and then rinsed with cold water until clean; environmentally friendly fixing agent Abubufu ECO is added.

[0046] The post-treatment temperature of Xinjiang long-staple cotton dyeing is adjusted from the original 65℃ to 55℃, and the same process is used for secondary soaping after the foot water is drained (the low-temperature anti-soaping agent is a polyol polymer low-temperature anti-soaping agent synthesized from anionic and non-ionic surfactants, and the low-temperature anti-soaping agent is TF-230HF), and the use amount of hydrophilic softener TF-4865A (3.0 wt%) and environmentally friendly fastness enhancer Abubufu ECO (2.0 wt%) is selected through multiple tests, and the indicators of the first test all meet the industry standards (see Table 1).

[0047] 2. Blending: After the dyed wool is opened by a blending machine, 2.5% antistatic agent, 1.0% blending oil, and 12% water are added according to the mass of the raw material, and the wool is incubated for 24 h. The incubated wool is mixed with long-staple cotton and conductive fiber, and then blended for spinning.

[0048] 3. Carding: The blended wool, long-staple cotton, and conductive fiber are fed into a carding machine, with a sliver weight of 20 g / 5m, a doffer speed of 20 r / min, and a cylinder speed of 260 r / min; the clearances between the cylinder and the flat plate are 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, and 0.32 mm.

[0049] 4. Combing: 6-end doubling is carried out, and the specific process and parameters are as follows: head carding: the draft ratio is 6.5 times, the sliver weight is 18.5 g / 5m, the needle plate to front roller clearance is 26 mm, and the speed is 35 m / min; second carding: the draft ratio is 6.5 times, the sliver weight is 18.5 g / 5m, the needle plate to front roller clearance is 26 mm, and the speed is 35 m / min.

[0050] 5. Doubling: one doubling: 7 feeds; draft 8.1 times, gauge 25 x 30 mm, weight of sliver 16 g / 5 m; two doubling: 8 feeds, draft 8.0 times, weight of sliver 16 g / 5 m, speed 80 m / min; three doubling: 8 feeds, draft 8.0 times, weight of sliver 16 g / 5 m, speed 80 m / min.

[0051] 6. Roving: draft 6-8.5 times is selected, weight of sliver 0.45 g / m; speed 9.2 m / min; roving reduces the thick and thin sections as much as possible, avoids accidental elongation during drafting, increases pressure and reduces speed, reduces end breakage and static phenomenon.

[0052] 7. Spinning: using siro spinning to improve the smoothness of the yarn; draft 30-35 times is selected, twist 680-840 T / M; speed 10.8 m / min; the length of wool and cotton fibers in the roving is greatly dispersed, in order to improve the uniformity of the yarn, the spinning gauge is 46 x 48 mm.

[0053] 8. Winding: speed 700 m / min, short thick section DS: 2.40, LS: 2.2 cm, long thick section DL: 1.32, LL: 30 cm; thin section D: 25.00, L 30 cm; long false twist 12 m, short false twist 2 m.

[0054] 9. Doubling: the tension and formation of the yarn need to be controlled, speed 480 m / min.

[0055] 10. Twisting: spindle speed 5500 r / min, designed twist 460 T / M, S twist direction.

[0056] 11. Steaming: high temperature steaming is used, temperature 65 °C, holding time 30 min, pressure 150 mb.

[0057] 12. Finished product inspection: evenness 16.5 %, kilometer thin section 0, kilometer thick section 5, kilometer neps 18, strength 350 CN, strength 7.2 %, twist 4.0 %.

[0058] Example 2 Different from Example 1, the product of the present example is a wool / cotton / conductive fiber blended yarn, which is mixed by wool, long-staple cotton and conductive fiber in a mass ratio of 75:24:1. Among them, the wool selected is 66-70S domestic wool, the length is 50 mm, and the fineness is 19.5 μm; the long-staple cotton selected is Xinjiang long-staple cotton, the fiber length is 35 mm, and the fineness is 14 μm; the conductive fiber selected is nylon-based conductive fiber, the specification is 3D x 51 mm.

[0059] 1. Dyeing process: Wool is dyed by high pressure and low temperature dyeing process, which comprises the following steps: The dyeing raw material is low temperature lanasol dye, acetic acid 3 wt% (pH value is adjusted to 4.5), Albegal B 1.0 g / L, Albicel FFA-01 0.5 g / L, and the dosage of low temperature lanasol dye is adjusted according to the color depth, generally 0.01 wt% for light color and 6 wt% for dark color.

[0060] Under normal temperature and pressure, Albicel FFA (penetrating defoaming agent), Milleran LTD (low temperature auxiliary), Albegal B (amphoteric auxiliary, leveling and deepening) are added in sequence, and the dye is added after 5 minutes of operation, and the dye is operated for 10 minutes; the cylinder cover is closed, air pressure is injected into the cylinder to 1.5 bar, and the temperature is raised to 85 ℃ at 1.0 ℃ / min, and the water is drained after 60 minutes of heat preservation; 85 ℃ alkali washing (pH value 8.0) for 10 minutes, washing with warm water (50 ℃) for 10 minutes, and then washing with cold water until clean.

[0061] Long-staple cotton is dyed by high pressure and low temperature dyeing process, which comprises the following steps: The dyeing raw material is Novacron dye (model X), high concentration penetrant FJ-103 is 1 g / L, anhydrous sodium sulfate 20 g / L, soda 15 g / L, and low temperature anti-soaping agent TF-230HF 2 g / L.

[0062] Under normal temperature and pressure, Novacron dye is added to the dyeing cylinder and operated for 10 minutes; pre-dissolved anhydrous sodium sulfate is added in several times (anhydrous sodium sulfate is added in three times, and the amount of each time is 1 / 3), and operated for 10 minutes; the cylinder cover is closed, air pressure is injected into the cylinder to 1.7 bar, and the temperature is raised to 50 ℃ at 2.0 ℃ / min, and the water is drained after 20 minutes of heat preservation; low temperature soaping agent TF-230HF is added, and soaping is carried out at 80 ℃ for 20 minutes, and then the water is washed with warm water (50 ℃) for 10 minutes, and then the water is washed with cold water until clean, and then the environment-friendly fixing agent Albifast ECO is added.

[0063] The post-treatment temperature of Xinjiang long-staple cotton during dyeing is adjusted from the original 65 ℃ to 50 ℃, and the same process is used for secondary soaping after the foot water is emptied (low temperature anti-soaping agent is a polyol polymer low temperature anti-soaping agent synthesized by anion and nonionic surfactant, and the low temperature anti-soaping agent is TF-230HF), and at the same time, hydrophilic softener TF-4865A (dosage 3.0 wt%) and environment-friendly fastness enhancer Albifast ECO (dosage 2.0 wt%) are selected through multiple tests.

[0064] 2. Carding: after dyeing the wool, open the wool with a carding machine, add 2% antistatic agent, 0.5% carding oil and 10% water according to the quality of the raw material, and incubate for 48 hours. Mix the incubated wool with long-staple cotton and conductive fiber and mix well for carding for spinning use.

[0065] 3. Combing: the carded wool, long-staple cotton and conductive fiber mixture is fed into a combing machine, with a sliver weight of 25 g / 5 m, a doffer speed of 25 r / min and a cylinder speed of 250 r / min; the distance between the cylinder and the flat plate is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm and 0.32 mm.

[0066] 4. Gilling: 6-end gilling is performed, and the specific process and parameters are as follows: Head gilling: the draft ratio is selected to be 6.0 times, the sliver weight is 20 g / 5 m, the needle plate to front roller distance is 25 mm, and the speed is 40 m / min; second gilling: the draft ratio is selected to be 6.0 times, the sliver weight is 20 g / 5 m, the needle plate to front roller distance is 25 mm, and the speed is 40 m / min.

[0067] 5. Drawing: one-drawing: 8 ends are fed in, the draft is 8.5 times, the distance is 25x30 mm, and the sliver weight is 20 g / 5 m; two-drawing: 7 ends are fed in, the draft is 8.5 times, the sliver weight is 20 g / 5 m, and the speed is 85 m / min; three-drawing: 7 ends are fed in, the draft is 8.5 times, the sliver weight is 20 g / 5 m, and the speed is 85 m / min.

[0068] 6. Roving: the draft is selected to be 8.5 times, the sliver weight is 0.5 g / m, and the speed is 9.5 m / min; the roving is required to reduce the thick and thin sections as much as possible, avoid accidental elongation during drafting, increase the pressure to reduce the speed, and reduce the broken ends and static phenomenon.

[0069] 7. Spinning: the yarn is spun by using the siro spinning method to improve the smoothness of the yarn; the draft ratio is selected to be 35 times, the twist is 840 T / M, and the speed is 10.8 m / min; the length of the wool and cotton fibers in the roving is dispersed greatly, and in order to improve the uniformity of the yarn, the drawing distance is 46x48 mm.

[0070] 8. Winding: the speed is 750 m / min, the short thick section DS is 2.50, the long thick section DL is 1.35, the short thick section LS is 2.5 cm, the long thick section LL is 35 cm, the thin section D is 30.00, and the long false branch +13%, 12 m, the short false branch +20%, 2 m.

[0071] 9. Doubling: the tension and formation of the yarn need to be controlled, and the speed is 500 m / min.

[0072] 10. Twisting: spindle speed 6000 r / min, designed twist 480 T / M, S twist direction.

[0073] 11. Steaming: high temperature steaming was used, temperature 70 ℃, holding time 35 min, pressure 180 mb.

[0074] Example 3 Different from Example 1, the product of the present example is wool / cotton / conductive fiber blended yarn, which is mixed by wool, long-staple cotton and conductive fiber in a mass ratio of 73:25:2. Among them, the wool selected is 66-70S domestic wool, the length is 40 mm, and the fineness is 21.3 μm; the long-staple cotton selected is Xinjiang long-staple cotton, the fiber length is 39 mm, and the fineness is 16 μm; the conductive fiber selected is nylon-based conductive fiber, the specification is 3D x 51 mm.

[0075] 1. Dyeing process: The wool adopts high-pressure low-temperature dyeing process, which specifically includes the following steps: The dyeing raw material is low-temperature lanasol dye, acetic acid 5 wt% (adjusting pH = 4), Albegal B 1.2 g / L, Albegal FFA-01 0.6 g / L, and the dosage of low-temperature lanasol dye is controlled according to the color depth, generally 0.01 wt% for light color and 8 wt% for dark color. Under normal temperature and pressure, Albegal FFA (penetration defoaming agent), Milleran LTD (low-temperature auxiliary), and Albegal B (amphoteric auxiliary, leveling and deepening) are added in turn, and the machine is operated for 10 min, then the dye is added and operated for 15 min; the cylinder cover is closed, air pressure is injected into the cylinder to 1.7 bar, and at the same time, the temperature is raised to 80 ℃ at 1.5 ℃ / min, and after holding for 40 min, the water is drained; 80 ℃ alkali washing (pH value 8.0) for 20 min, washing with warm water (50 ℃) for 20 min, and then cold water washing until clean.

[0076] The long-staple cotton adopts high-pressure low-temperature dyeing process, which specifically includes the following steps: The dyeing raw material is Noviklon dye, high-concentration penetrant FJ-103 is 1 g / L, anhydrous sodium sulfate 80 g / L, sodium carbonate 20 g / L, and low-temperature anti-staining soaping agent TF-230HF 3 g / L. At room temperature and normal pressure, the Noviklon dye is added to the dyeing vat and operated for 15 min; then the pre-dissolved anhydrous sodium sulfate is added in several times (the anhydrous sodium sulfate is added in three times, and the amount of each time is 1 / 3), and operated for 15 min; the lid of the vat is closed, air pressure is added to the vat to 1.6 bar, and the temperature is raised to 46 ℃ at a rate of 2.0 ℃ / min, and the temperature is kept for 15 min; the sodium carbonate is added in several times (the anhydrous sodium sulfate is added in three times, and the amount of each time is 1 / 3), and the temperature is kept for 350 min before draining; the low-temperature soaping agent TF-230HF is added, and soaping is carried out at 80 ℃ for 15 min; then the yarn is rinsed with warm water (50 ℃) for 15 min, and then rinsed with cold water until clean; and the environment-friendly fixing agent Abubosu ECO is added.

[0077] The post-treatment temperature of Xinjiang long-staple cotton dyeing is adjusted from the original 65 ℃ to 50 ℃, and the same process is used for secondary soaping (the low-temperature anti-staining soaping agent is a polyol polymer low-temperature anti-staining soaping agent synthesized by anion and nonionic surfactant, and the low-temperature anti-staining soaping agent is TF-230HF) after the foot water is drained; at the same time, the hydrophilic softener TF-4865A (the amount is 3.0 wt%) and the environment-friendly fastness enhancer Abubosu ECO (the amount is 2.0 wt%) are selected through multiple tests.

[0078] 2. Wool blending: after the dyed wool is opened by a wool blending machine, 2% antistatic agent, 0.5% wool oil, and 10% water are added according to the mass of the raw material, and the wool is aged for 30 h. The aged wool is mixed with long-staple cotton and conductive fiber for wool blending for spinning use.

[0079] 3. Carding: the wool blending material after wool blending, long-staple cotton, and conductive fiber are fed into a carding machine, the sliver output is 22 g / 5m, the doffer speed is 22 r / min, and the cylinder speed is 260 r / min; the gauge between the cylinder and the flat is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, and 0.32 mm.

[0080] 4. Gilling: 7-end doubling is carried out, and the specific process and parameters are as follows: Head gilling: the draft ratio is selected to be 7.0 times, the sliver output is 19 g / 5m, the needle plate to front roller gauge is 26 mm, and the speed is 38 m / min; second gilling: the draft ratio is selected to be 7.0 times, the sliver output is 19 g / 5m, the needle plate to front roller gauge is 26 mm, and the speed is 38 m / min.

[0081] 5. Drawing: one drawing: 7 feeds; draft 8.2 times, gauge 25 x 30 mm, weight of the sliver 18 g / 5 m; two drawing: 8 feeds, draft 8.2 times, weight of the sliver 18 g / 5 m, speed 82 m / min; three drawing: 7 feeds, draft 8.2 times, weight of the sliver 18 g / 5 m, speed 82 m / min.

[0082] 6. Roving: draft 7.5 times is selected, weight of the sliver 0.4 g / m; speed 9.2 m / min; the roving reduces the unevenness as much as possible, avoids accidental elongation in the drafting process, increases the pressure to reduce the speed, and reduces the broken ends and static phenomenon.

[0083] 7. Spinning: using the siro spinning to improve the smoothness of the yarn. Draft 33 times is selected, twist 740 T / M; speed 11 m / min; the length of the wool and the cotton fiber in the roving is greatly dispersed, in order to improve the uniformity of the yarn, the spinning gauge is 46 x 48 mm.

[0084] 8. Winding: speed 750 m / min, short thick place DS: 2.40, LS: 2.3 cm, long thick place DL: 1.32, LL: 32 cm. Thin place D: 28.00, L 32 cm. Long false twist -13%, 12 m, short false twist -20%, 2 m.

[0085] 9. Doubling: the tension and the forming of the yarn need to be controlled in the doubling, speed 500 m / min.

[0086] 10. Twisting: spindle speed 5000 r / min, designed twist 480 T / M, S twist direction.

[0087] 11. Steaming: high temperature steaming is used, temperature 60 ℃, holding time 25 min, pressure 150 mb.

[0088] Comparative Example 1 A wool / cotton / conductive fiber blended yarn and a preparation method thereof Different from Example 1, the dyeing in the preparation method uses the existing dyeing process, wherein the dyeing process of the wool is as shown in b of Figure 2 , and specifically includes the following steps: The dyeing raw material is low-temperature lanasol dye, acetic acid 3.5 g / L (pH 4.5), Albegal B 1.5 g / L and Albegal FFA-01 0.5 g / L. The low-temperature lanasol dye is controlled according to the color depth, and the dosage is generally 0.01 wt% for light color and 6 wt% for dark color. Under normal temperature and pressure, the dye and auxiliary are added into the dyeing vat in turn and run for 15 min; the temperature is raised to 98 ℃ at a rate of 1.5 ℃ / min, and after 60 min of heat preservation, the water is drained; 80 ℃ alkali washing (pH value 8.0) for 20 min, washing with warm water (50 ℃) for 15 min, and then washing with cold water until clean.

[0089] The dyeing process of long cotton is as shown in b of Figure 3 The dyeing process of long cotton is as shown in b of The dyeing raw material is low-temperature lanasol dye, acetic acid 3.5 g / L (pH 4.5), Albegal B 1.5 g / L and Albegal FFA-01 0.5 g / L. The low-temperature lanasol dye is controlled according to the color depth, and the dosage is generally 0.01 wt% for light color and 6 wt% for dark color. Under normal temperature and pressure, the dye and auxiliary are added into the dyeing vat in turn and run for 15 min; the temperature is raised to 98 ℃ at a rate of 1.5 ℃ / min, and after 60 min of heat preservation, the water is drained; 80 ℃ alkali washing (pH value 8.0) for 20 min, washing with warm water (50 ℃) for 15 min, and then washing with cold water until clean.

[0090] Comparative Example 2 Different from Example 1, only 70% wool and 30% long cotton are used, and other preparation methods are consistent with Example 1.

[0091] Comparative Example 3 Different from Example 1, only 50% wool and 50% long cotton are used, and other preparation methods are consistent with Example 1.

[0092] Comparative Example 4 Different from Example 1, the raw material mixing method is changed from material mixing to sliver mixing process. The specific sliver mixing process can refer to the sliver mixing process in the patent with publication number CN118029030A, and the specific sliver mixing process is as follows: 1. Wool carding: sliver dry weight is 20 g / 5 m, doffer speed is 20 r / min, and cylinder speed is 200 r / min; five-point spacing between cylinder and flat is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, and 0.32 mm; spacing between licker-in roller and feed plate is 0.3 mm.

[0093] 2. Carding of long staple cotton and conductive fibre blend: top dry weight 20 g / 5 m, doffer speed 20 r / min, cylinder speed 250 r / min; cylinder to flat five point gauge 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, 0.32 mm; lickerin to flat gauge 0.3 mm.

[0094] 3. Wool gilling: draft ratio of head carding 6-7 times, top dry weight 18.0 g / 5 m, needle plate to front roller gauge 27 mm, speed 35 m / min; draft ratio of second carding 6 times, top dry weight 18.0 g / 5 m, needle plate to front roller gauge 27-30 mm, speed 35 m / min.

[0095] 4. Wool gilling: draft ratio of head carding 6 times, top dry weight 18.0 g / 5 m, needle plate to front roller gauge 25 mm, speed 40 m / min; draft ratio of second carding 6 times, top dry weight 18.0 g / 5 m, needle plate to front roller gauge 25 mm, speed 40 m / min.

[0096] 5. Drawing: first drawing: 8 ends (6 A ends + 2 B ends) feed in, draft ratio 8.0 times, gauge 25 x 30 mm, top weight 18 g / 5 m, speed 80 m / min; second drawing: 7 ends feed in, draft ratio 8.0 times, gauge 25 x 30 mm, top weight 18 g / 5 m, speed 80 m / min; third drawing: 7 ends feed in, draft ratio 8.0 times, gauge 25 x 30 mm, top weight 18 g / 5 m, speed 80 m / min.

[0097] 6. Roving: draft ratio 6 times, top weight 0.4 g / m; speed 9.0 m / min.

[0098] 7. Spinning: using siro spinning, draft ratio 30 times, twist 680 T / M; speed 10.0 m / min, spinning gauge (44-47) x (49-53) mm.

[0099] 8. Winding: speed 650 m / min, short thick places 2.40, length of short thick places 2.0 cm, long thick places 1.3, length of long thick places 30 cm, thin places 25.0, length of thin places 30 cm, long false twist - 13%, 12 m, short false twist - 20%, 2 m.

[0100] 9. Doubling: speed 450 m / min.

[0101] 10. Twisting: spindle speed 5000 r / min, design twist 450 T / M, S twist direction.

[0102] 11. Steaming: temperature 60℃, holding time 25 min, pressure 120 mb.

[0103] Performance test 1. Dyeing process effect The comparative effect of each fastness of the three samples obtained by respectively implementing the dyeing process of Example 1 and Comparative Example 1 is shown in Table 1. Among them, the test method of dry rubbing fastness refers to GB / T 3920-2008, the test method of soaping fastness refers to GB / T 3921-2008, the test method of sunlight fastness refers to GB / T 8427-2019, and the test method of perspiration fastness refers to GB / T 3922-2013. Among them, the grades of dry rubbing fastness, soaping fastness, sunlight fastness and perspiration fastness are represented by numbers, wherein the number 1 represents the worst effect and the number 5 represents the best effect.

[0104] Table 1 Dyeing process effect

[0105] As can be seen from Table 1, each dyeing fastness of the present method 1-3 is obviously improved compared with the original conventional process. This is because in the dyeing process of the present application of wool and long-staple cotton, the pressure in the dyeing cylinder is increased by 1.5 bar compared with the normal temperature and pressure in the dyeing cylinder in Comparative Example 1. The increase in pressure can accelerate the opening of the wool scale layer on the basis of temperature, fully swell the cotton fibers, and fully combine the dye molecules with the covalent bond of wool and cotton fibers, thereby improving the dyeing rate and further improving the fastness. By optimizing low-temperature dyes (alpha-bromoacrylamide, lanasol wool reactive dyes) and auxiliaries (low-temperature soaping agent TF-230HF), the dyeing temperature and long-staple cotton soaping temperature are reduced, the steam usage is saved, the energy consumption is saved, and the green and clean production is met.

[0106] 2. Performance of yarns after being made into fabrics The pilling test is carried out according to GB / T 4802.3-2008 "Determination of the Pilling Behavior of Textile Fabrics - Part 3: Pilling Box Method".

[0107] Rating conditions: The rating should be carried out under a standard light source box (such as D65 light source) or natural light, with uniform light and avoiding external interference. When rating, the sample should be compared with the standard sample, and the observation angle is 45°±10°.

[0108] Rating standard: The visual description comparison method is used to compare the tested sample with the standard sample, and the pilling grade is evaluated.

[0109] Grade classification: usually divided into 5 grades (1st grade is the worst, 5th grade is the best): 5th grade: no change on the surface, almost no fuzzing and pilling. 4th grade: slight fuzzing or a small amount of pilling (fine fuzz). 3rd grade: moderate fuzzing and pilling, the fuzz is obvious but the density is moderate. 2nd grade: serious fuzzing and pilling, the fuzz is dense and large. 1st grade: extremely serious fuzzing and pilling, the surface is covered with a large amount of fuzz or damaged.

[0110] Table 2: the wearing performance of the fabric made of the yarn

[0111] From Table 2, it can be seen that, in Example 1, the low-temperature dyeing auxiliary is used to replace the original auxiliary, so that the dyeing temperature is reduced, and the pH value of the dyeing solution is kept between 4 and 5, which is basically consistent with the isoelectric point of the wool fiber, thereby reducing the fiber damage and improving the fuzzing and pilling by 1-2 grades, and the hand feeling and state of the wool are maximized to further improve the wearing performance of the fabric made of the yarn. The reason for the performance difference between Example 1 and Comparative Example 1 is that the low-temperature dyeing technology reduces the fiber damage in the dyeing process, ensures the fiber length, and reduces the generation of short fibers in the carding process, so that the hairiness on the surface of the yarn is reduced, thereby achieving the effect of improving the fuzzing and pilling.

[0112] Table 3: the performance of the fabric made of the raw material of Example 1 and Comparative Example 2.

[0113] Table 3: the performance of Example 1 and Comparative Example 2

[0114] From Table 3, it can be seen that, when 1% of the conductive fiber is removed from the raw material, the conductive performance is significantly reduced. The group facing the fabric made by the present application moves relatively large. The conductive fiber added in Example 1 will effectively eliminate static electricity. After the conductive fiber is removed in Comparative Example 2, the wool fiber is easy to produce static electricity in the friction process, and lacks an effective static electricity leakage path, resulting in static electricity accumulation. The decrease of the antistatic property will cause the static electricity to cause the discomfort phenomena such as electric shock feeling and adsorption of clothes during wearing.

[0115] Table 4: the performance of the fabric made of the raw material of Comparative Example 1 and Comparative Example 3.

[0116] Table 4: the performance of the fabric made of the raw material of Comparative Example 1 and Comparative Example 3

[0117] The wool fiber has large curling and excellent elasticity, and can be deformed and quickly recovered under external force. The wool proportion is reduced, the bulkiness of the yarn and the fabric is reduced, the hand feeling is hard, the warmth retention is poor, and the elasticity and recovery of the yarn are significantly reduced. The reduction of elasticity can cause the yarn to easily produce wrinkles during wearing, and the wrinkles are difficult to recover flat, and the dimensional stability is poor. Compared with Example 1, the wool and long-staple cotton blending ratio of Comparative Example 3 is changed, the wool content is reduced, and the long-staple cotton content is increased. As shown in Table 4, compared with Comparative Example 3, the strength, elongation and hand bulkiness of the yarn of Example 1 are improved. The conductivity increases with the increase of the wool content.

[0118] The mixing method of the raw materials of Example 1 is changed from material mixing to sliver mixing process of Comparative Example 4, and the mixing and arrangement of the fibers in the yarn body are changed. The properties of Example 1 and Comparative Example 4 are shown in Table 5.

[0119] Table 5 Properties of Example 1 and Comparative Example 4

[0120] As shown in Table 5, the yarn index, evenness and strength index of Comparative Example 4 are all reduced compared with Example 1. The yarn of Example 1 is made of raw materials of wool, long-staple cotton sliver and conductive fiber by material mixing, and the index stability can meet the standard requirements of clothing products.

[0121] 3. Comparison of yarn index and standard data The comparison of the yarn index of Example 1 and the standard data is shown in Table 6, wherein the relaxation size change rate, felting size change rate, color fastness to washing (grade), color fastness to rubbing (grade), color fastness to perspiration (grade), color fastness to water (grade) and color fastness to light (grade).

[0122] Table 6 Comparison of yarn index of Example 1 and standard data

[0123] As shown in Table 6, the yarn of Example 1 is made of raw materials of 66S domestic wool, Xinjiang long-staple cotton sliver and conductive fiber by blending and semi-worsted spinning, and the color fastness, pilling and dimensional stability all meet the standard requirements of clothing products. The clothing product made of domestic textile raw materials has high toughness, good resilience, is not easy to deform after long wearing, is wear-resistant and durable, and can maintain good appearance and performance after long wearing. The clothing product has excellent warmth retention and good air permeability, can discharge the moisture in the body, keep the body dry and comfortable, and has good antistatic performance, and is the first choice of clothing.

[0124] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A method for preparing wool / cotton / conductive fiber blended yarn, characterized in that: The following steps are involved: Dyeing wool and long-staple cotton separately, and conditioning the dyed wool; The cured wool is mixed with long-staple cotton and conductive fiber to prepare a mixture; The mixed material is combed, needled and drawn to obtain a drawn product; The product after drawing is subjected to roving, spun yarn, winding, doubling, twisting, steaming and setting to obtain wool / cotton / conductive fiber blended yarn.

2. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that: The wool, long-staple cotton and conductive fiber are mixed in a mass ratio of (70-75):(24-30):(1-2); The average length of the wool is 45-50 mm and the average fineness is 19.5-21.3 μm; The average length of the long-staple cotton fibers is 35-39 mm, and the average fineness is 14-16 μm; The conductive fiber is a nylon-based conductive fiber.

3. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that: The wool dyeing process is as follows: add auxiliaries and dyes to the dye vat in sequence and run it; close the vat lid, inject air into the vat to pressurize it, and at the same time increase the temperature to 80-85°C at a rate of 1-1.5°C / min. Keep it warm for 40-60 minutes and then drain it; add alkali to adjust the pH to 8.0-8.5, rinse with warm water for 10-20 minutes, and then rinse with water again; The dyeing process for long-staple cotton is as follows: add the dye to the dye vat and run it; then add pre-dissolved sodium sulfate in batches; close the vat lid, inject air into the vat to pressurize it, and at the same time raise the temperature to 50-55°C at 1.0-2.0°C / min, keep it warm for 20-30 minutes, add soda ash in batches, keep it warm for 30-40 minutes, and then drain; add low-temperature soaping agent, soap wash for 20-30 minutes, rinse with warm water for 10-20 minutes, then rinse with cold water, and add an environmentally friendly color fixing agent.

4. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 3, characterized in that: During the dyeing process of wool and long-staple cotton, air is injected and pressurized to a pressure of 1.5-1.7 bar, and the temperature of warm water is 45-50°C.

5. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that: The wool curing step is to add wool oil, antistatic agent and water to the dyed wool for curing for 24-48 hours; The dry weight of the mixed material combed wool is 20 g / 5m-25 g / 5m, the doffer speed is 20 r / min-25 r / min, and the cylinder speed is 250 r / min-280 r / min; the five-point distances between the cylinder and the cover plate are 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, and 0.32 mm; and the distance between the licker-in roller and the cotton feed plate is 0.3-0.5 mm.

6. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that: The drafting ratio of the head needle in the needle comb is 6-7 times, the dry weight of the sliver is 18.0 g / 5m-20.0 g / 5m, the distance from the needle plate to the front roller is 25-26 mm, and the speed is 35-40 m / min; The drafting ratio of the second needle is 6-7 times, the dry weight of the sliver is 18.0 g / 5m-20.0 g / 5m, the distance from the needle plate to the front roller is 25-26 mm, and the machine speed is 35-40 m / min.

7. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that: The drawing process is carried out with 6-8 strands fed at once, a drafting ratio of 8.0-8.5 times, a gauge of 25×30 mm, a sliver weight of 15 g / 5m-20 g / 5m, and a machine speed of 80-85 m / min; The second feed is 7-8 strands, the drafting ratio is 8.0-8.5 times, the sliver weight is 15 g / 5m-20 g / 5m, and the speed is 80-85m / min; The three-way feeding is 7-8 strands, the drafting ratio is 8.0-8.5 times, the sliver weight is 15 g / 5m-20 g / 5m, and the speed is 80-85m / min.

8. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that: The draft ratio of the roving is 6-8.5 times, the sliver weight is 0.4-0.5 g / m; the speed is 9.0-9.5 m / min; The spun yarn is siro-spun with a draft ratio of 30-35 times and a twist of 680-840 T / M; the spinning speed is 10.0-11.0 m / min, and the spun yarn gauge is (44-47)×(49-53) mm; The winding speed is 650-750 m / min, the short thick section is 2.40-2.50, the short thick section length is 2.0-2.5 cm, the long thick section is 1.3-1.35, the long thick section length is 30-35 cm, the thin section is 25.0-30.0, the thin section length is 30-35 cm, the long misalignment is -13% to +13%, 12 m, and the short misalignment is -20% to +20%, 2 m; The merging speed is 450-500 m / min; The spindle speed of the twisted yarn is 5000-6000 r / min, the designed twist is 450-480 T / M, and the twist direction is S; The steaming temperature is 60-70° C., the holding time is 25-35 min, and the pressure is 120-180 mb.

9. A wool / cotton / conductive fiber blended yarn produced by the method for producing the wool / cotton / conductive fiber blended yarn according to any one of claims 1 to 8.

10. Use of the wool / cotton / conductive fiber blended yarn according to claim 9 in clothing.

Images