Processing method of light and thin cashmere woolen knitted scarf

Abstract

The invention relates to the technical field of textiles, and particularly discloses a processing method of a light and thin cashmere woolen knitted scarf. A processing method of a light and thin cashmere woolen knitted scarf comprises the following steps: preparation of bulked wool yarn: mixing wool fibers with viscose fibers, and preparing rough yarn through pre-opening, carding, drawing, hot-wet treatment and spun yarn spinning procedures; carrying out post-treatment on the roving by utilizing a treating agent to obtain bulked lamb wool yarn; wherein the treating agent is prepared from the following raw materials: polyurethane emulsion, graphene dispersion liquid, modified nano silicon dioxide and a surfactant; weaving: weaving the fine-count worsted wool yarn and the bulked lamb wool yarn to obtain a fabric; and finishing: squeezing, drying, washing, milling, piece dyeing, drying, fluffing of a cloth bottom, shearing of a cloth cover and light decating are carried out on the fabric, and the scarf is obtained.

Description

Technical Field

[0001] The present application relates to the technical field of textiles, and in particular to a method for processing a light and thin cashmere woolen knitted scarf. Background Art

[0002] Wool is a natural fiber with excellent thermal insulation performance. Its unique natural curl and surface scale layer make it widely used. At present, the development of wool fabrics is generally divided into heavy and light types. In order to give full play to the thermal insulation properties of wool fabrics, traditional products are developed towards heavy types with high gram per square meter. On the one hand, it results in a large amount of raw materials used and increased corporate costs; on the other hand, the wearing performance and easy care performance of heavy fabrics are not as good as those of light products, but light products do not have excellent thermal insulation performance. Summary of the invention

[0003] In order to improve the thermal insulation performance of wool fabrics, the present application provides a method for processing a light and thin cashmere woolen knitted scarf.

[0004] The present application provides a method for processing a light and thin cashmere woolen knitted scarf, which adopts the following technical solution: A method for processing a light and thin cashmere woolen knitted scarf comprises the following steps: Preparation of bulky lamb wool yarn: lamb wool fiber and viscose fiber are mixed, and roving is prepared through pre-opening, combing, drawing, heat and moisture treatment, and spinning; the roving is post-treated with a treatment agent to obtain bulky lamb wool yarn; wherein the raw materials of the treatment agent include polyurethane emulsion, graphene dispersion, modified nano-silicon dioxide, and surfactant; Weaving: Weaving fine worsted yarn and bulky lambskin yarn to obtain fabrics; Finishing: the fabric is squeezed and dried, washed, shrunk, piece-dyed, dried, the bottom of the fabric is raised, the surface is sheared, and lightly steamed to obtain the scarf.

[0005] By adopting the above technical scheme, lamb wool fibers are blended with viscose fibers, which can improve the strength and uniformity of the yarn, thereby improving the fluffiness of the final fabric; and the yarn is treated with a composite treatment agent composed of polyurethane emulsion, graphene dispersion, modified nano-silica, and surfactant to improve the thermal insulation performance of the fluffier lamb wool yarn; finally, the fluffier lamb wool yarn and fine worsted yarn are used for weaving and finishing to obtain a scarf with good fluffiness and good thermal insulation performance.

[0006] In a specific embodiment, the weight ratio of the polyurethane emulsion, the graphene dispersion, the modified nano-silica and the surfactant in the treating agent is 100:(30-50):(1-5):(0.5-1.5).

[0007] By adopting the above technical solution, the ratio of polyurethane emulsion, graphene dispersion, modified nano-silicon dioxide and surfactant in the treating agent is further limited, thereby improving the treating effect on the roving.

[0008] In a specific embodiment, the graphene in the graphene dispersion is expanded graphite or graphene oxide.

[0009] In a specific embodiment, the surfactant includes sodium dodecylbenzene sulfonate or sodium dodecyl sulfate.

[0010] By adopting the above technical solution, sodium dodecylbenzene sulfonate and sodium dodecyl sulfate can effectively reduce the surface tension of the aqueous solution, thereby promoting the uniform distribution of the treatment agent on the surface of the wool fiber.

[0011] In a specific embodiment, the preparation method of the modified nano-silicon dioxide comprises the following steps: First, γ-aminopropyltriethoxysilane, ethanol and water are stirred evenly to obtain a modified solution; Add silicon dioxide with an average particle size of 90 nanometers into a high-speed mixer. During the stirring process, slowly spray the modified liquid into the silicon dioxide. After the spraying is completed, continue stirring, and finally dry to obtain modified nano silicon dioxide.

[0012] By adopting the above technical scheme, γ-aminopropyltriethoxysilane is first dissolved in ethanol to obtain a modified liquid, and then the modified liquid is sprayed into the silica while stirring the silica. After the spraying is completed, the silica is stirred and dried to obtain modified silica. The γ-aminopropyltriethoxysilane on the surface of the modified silica can not only improve the dispersion performance of the silica, but also improve its adhesion on the wool fiber.

[0013] In a specific embodiment, the weight ratio of the modified liquid to the silicon dioxide is 1:(13-14).

[0014] By adopting the above technical solution, the ratio of the modified liquid to silicon dioxide is further limited, thereby improving the modification effect on silicon dioxide.

[0015] In a specific embodiment, the viscose fiber includes Lyocell fiber or Modal fiber.

[0016] By adopting the above technical solution, Lyocell fiber and Modal fiber have good uniformity, which can improve the overall performance of the yarn.

[0017] In a specific embodiment, the weight ratio of the lamb wool fiber to the viscose fiber is 2:1 or 3:2.

[0018] By adopting the above technical solution, the ratio of lamb wool fiber to viscose fiber is further limited, ensuring that the mixed fibers give the yarn higher comfort and breathability.

[0019] In a specific embodiment, in the step of preparing the bulky lamb wool yarn, the temperature of the heat and moisture treatment is 80-90° C., the relative humidity is 60-70%, and the time is 10-20 minutes.

[0020] By adopting the above technical solution, the temperature, humidity and time of the heat and moisture treatment are further limited to further enhance the bonding force between the fibers, ensure that the fibers fully absorb moisture and expand, and improve the fluffiness of the fibers.

[0021] In a specific embodiment, in the step of preparing the bulky lamb wool yarn, when the roving is post-treated with a treating agent, the bath ratio is 1:(13-17), the temperature is 90-95°C, and the time is 15-25 minutes.

[0022] By adopting the above technical solution, the bath ratio, temperature and time of post-treatment are further limited, the treatment effect on the roving is improved, and then the thermal insulation performance thereof is further improved.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. In the present application, lamb wool fiber and viscose fiber are blended to improve the strength and uniformity of the yarn, thereby improving the bulkiness of the final fabric; and the yarn is treated with a composite treatment agent composed of polyurethane emulsion, graphene dispersion, modified nano-silicon dioxide, and surfactant to improve the warmth retention performance of the bulky lamb wool yarn; finally, the bulky lamb wool yarn and fine worsted yarn are used for weaving and finishing to obtain a scarf with good bulkiness and good warmth retention performance; 2. In this application, sodium dodecylbenzene sulfonate and sodium dodecyl sulfate can effectively reduce the surface tension of the aqueous solution, thereby promoting the uniform distribution of the treatment agent on the surface of the wool fiber; 3. The lyocell fibers and modal fibers in this application have good uniformity and can improve the overall performance of the yarn. DETAILED DESCRIPTION

[0024] The present application is further described in detail below with reference to the embodiments.

[0025] All raw materials in the embodiment can be obtained from the market. The fine worsted yarn is wool Sero spun yarn.

[0026] Preparation Example Preparation Example 1 Preparation Example 1 provides a method for preparing modified nano-silicon dioxide, comprising the following steps: First, γ-aminopropyltriethoxysilane, ethanol and water are stirred evenly to obtain a modified liquid; wherein the weight ratio of γ-aminopropyltriethoxysilane, ethanol and water is 5:18:2; Add silicon dioxide with an average particle size of 90 nanometers into a high-speed mixer. During the stirring process, slowly spray the modified liquid into the silicon dioxide. After the spraying is completed, continue stirring for 0.5 hours, and finally dry at 115°C for 1.5 hours to obtain modified nano silicon dioxide; wherein the weight ratio of the modified liquid to the silicon dioxide is 1:12.5.

[0027] Preparation Example 2 Preparation Example 2 provides a method for preparing modified nano-silicon dioxide, comprising the following steps: First, γ-aminopropyltriethoxysilane, ethanol and water are stirred evenly to obtain a modified liquid; wherein the weight ratio of γ-aminopropyltriethoxysilane, ethanol and water is 5:18:2; Add silicon dioxide with an average particle size of 90 nanometers into a high-speed mixer. During the stirring process, slowly spray the modified liquid into the silicon dioxide. After the spraying is completed, continue stirring for 0.5 hours, and finally dry at 115°C for 1.5 hours to obtain modified nano silicon dioxide; wherein the weight ratio of the modified liquid to the silicon dioxide is 1:13.

[0028] Preparation Example 3 Preparation Example 3 provides a method for preparing modified nano-silicon dioxide, comprising the following steps: First, γ-aminopropyltriethoxysilane, ethanol and water are stirred evenly to obtain a modified liquid; wherein the weight ratio of γ-aminopropyltriethoxysilane, ethanol and water is 5:18:2; Add silicon dioxide with an average particle size of 90 nanometers into a high-speed mixer. During the stirring process, slowly spray the modified liquid into the silicon dioxide. After the spraying is completed, continue stirring for 0.5 hours, and finally dry at 115°C for 1.5 hours to obtain modified nano silicon dioxide; wherein the weight ratio of the modified liquid to the silicon dioxide is 1:13.5.

[0029] Preparation Example 4 Preparation Example 4 provides a method for preparing modified nano-silicon dioxide, comprising the following steps: First, γ-aminopropyltriethoxysilane, ethanol and water are stirred evenly to obtain a modified solution; wherein the weight ratio of γ-aminopropyltriethoxysilane, ethanol and water is 5:18:2; Add silicon dioxide with an average particle size of 90 nanometers into a high-speed mixer. During the stirring process, slowly spray the modified liquid into the silicon dioxide. After the spraying is completed, continue stirring for 0.5 hours, and finally dry at 115°C for 1.5 hours to obtain modified nano silicon dioxide; wherein the weight ratio of the modified liquid to the silicon dioxide is 1:14.

[0030] Preparation Example 5 Preparation Example 5 provides a method for preparing modified nano-silicon dioxide, comprising the following steps: First, γ-aminopropyltriethoxysilane, ethanol and water are stirred evenly to obtain a modified solution; wherein the weight ratio of γ-aminopropyltriethoxysilane, ethanol and water is 5:18:2; Add silicon dioxide with an average particle size of 90 nanometers into a high-speed mixer. During the stirring process, slowly spray the modified liquid into the silicon dioxide. After the spraying is completed, continue stirring for 0.5 hours, and finally dry at 115°C for 1.5 hours to obtain modified nano silicon dioxide; wherein the weight ratio of the modified liquid to the silicon dioxide is 1:14.5.

[0031] Preparation Example Preparation Example 1 Preparation Example 1 provides a method for processing a light and thin cashmere woolen knitted scarf, comprising the following steps: Preparation of bulky lamb wool yarn: Lamb wool fiber and viscose fiber are mixed, and then pre-opened by compressed air generator to blow the fiber apart; then carded by card cloth and drawn by drawing machine; then heat-wet treated at 80℃ and relative humidity of 60% for 10 minutes, and finally made into roving by siro spinning machine; post-treated the roving with treating agent at 90℃ for 15 minutes, with bath ratio of 1:13, to obtain bulky lamb wool yarn; wherein the treating agent is polyurethane emulsion, graphene dispersion A mixed liquid consisting of a dispersion, the modified nano-silica in Preparation Example 1, and a surfactant, and the weight ratio of the polyurethane emulsion, the graphene dispersion, the modified nano-silica in Preparation Example 1, and the surfactant is 100:30:1:0.5; the solid content of the polyurethane emulsion is 30%; the graphene in the graphene dispersion is graphene oxide, and the concentration is 0.1 mg / mL; the surfactant is sodium dodecylbenzene sulfonate; the weight ratio of lamb's wool fiber to viscose fiber is 2:1, and the viscose fiber is lyocell fiber; Weaving: Use fine worsted yarn as warp yarn and bulky lamb wool yarn as weft yarn to weave plain fabric; warp density is 355 yarns / 10cm, weft density is 95 yarns / 10cm; Finishing: the fabric is squeezed and dried, washed, shrunk, piece-dyed, dried, the bottom of the fabric is raised, the surface is sheared, and lightly steamed to obtain the scarf.

[0032] Example 2 The difference between Example 2 and Example 1 is that the modified nano-silica is the modified nano-silica in Preparation Example 2; the remaining steps are consistent with Example 1.

[0033] Example 3 The difference between Example 3 and Example 1 is that the modified nano-silica is the modified nano-silica in Preparation Example 3; the remaining steps are consistent with Example 1.

[0034] Example 4 The difference between Example 4 and Example 1 is that the modified nano-silica is the modified nano-silica in Preparation Example 4; the remaining steps are consistent with Example 1.

[0035] Example 5 The difference between Example 5 and Example 1 is that the modified nano-silica is the modified nano-silica in Preparation Example 5; the remaining steps are consistent with Example 1.

[0036] Example 6 The difference between Example 6 and Example 3 is that the weight ratio of the polyurethane emulsion, the graphene dispersion, the modified nano-silica in Preparation Example 3, and the surfactant in the treating agent is 100:40:3:1; the remaining steps are consistent with Example 3.

[0037] Example 7 The difference between Example 7 and Example 3 is that the weight ratio of the polyurethane emulsion, the graphene dispersion, the modified nano-silica in Preparation Example 3, and the surfactant in the treating agent is 100:50:5:1.5; the remaining steps are consistent with Example 3.

[0038] Example 8 The difference between Example 8 and Example 6 is that, in the preparation of bulky lamb wool yarn, the lamb wool fiber is mixed with the viscose fiber, and then a compressed air generator is used to perform a pre-opening treatment to blow the fibers apart; then the needle cloth is used for combing and the drawing machine is used for drawing; then a heat and moisture treatment is performed at 85°C and a relative humidity of 65% for 15 minutes, and finally the roving is formed by a siro spinning machine; the roving is post-treated with a treating agent at 90°C for 15 minutes, and the bath ratio is 1:13 to obtain bulky lamb wool yarn; the remaining steps are consistent with Example 6.

[0039] Example 9 The difference between Example 9 and Example 6 is that, in the preparation of bulky lamb wool yarn, the lamb wool fiber is mixed with the viscose fiber, and then a compressed air generator is used to perform a pre-opening treatment to blow the fibers apart; then the needle cloth is used for combing and the drawing machine is used for drawing; then a heat and moisture treatment is performed at 90°C and a relative humidity of 70% for 20 minutes, and finally the roving is formed by a siro spinning machine; the roving is post-treated with a treating agent at 90°C for 15 minutes, and the bath ratio is 1:13 to obtain bulky lamb wool yarn; the remaining steps are consistent with Example 6.

[0040] Example 10 The difference between Example 10 and Example 8 is that, in the preparation of bulky lamb wool yarn, the lamb wool fiber is mixed with the viscose fiber, and then a compressed air generator is used to perform a pre-opening treatment to blow the fibers apart; then the needle cloth is used for combing and the drawing machine is used for drawing; then the yarn is heat-wet treated for 15 minutes at 85°C and a relative humidity of 65%, and finally the yarn is made into roving by a siro spinning machine; the roving is post-treated with a treating agent at 92.5°C for 20 minutes, and the bath ratio is 1:15 to obtain bulky lamb wool yarn; the remaining steps are consistent with Example 8.

[0041] Embodiment 11 The difference between Example 11 and Example 8 is that, in the preparation of bulky lamb wool yarn, the lamb wool fiber is mixed with the viscose fiber, and then a compressed air generator is used to perform a pre-opening treatment to blow the fibers apart; then the needle cloth is used for combing and the drawing machine is used for drawing; then a heat and moisture treatment is performed at 85°C and a relative humidity of 65% for 15 minutes, and finally the roving is formed by a siro spinning machine; the roving is post-treated with a treating agent at 95°C for 25 minutes, and the bath ratio is 1:17 to obtain bulky lamb wool yarn; the remaining steps are consistent with Example 8.

[0042] Example 12 The difference between Example 12 and Example 10 is that in the preparation step of the bulky lambskin yarn, the weight ratio of lambskin fiber to viscose fiber is 3:2; the remaining steps are consistent with Example 10.

[0043] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that, in preparation of bulky lamb wool yarn, lamb wool fibers and viscose fibers are mixed, and then pre-opening treatment is performed using a compressed air generator to blow the fibers apart; then carding is performed using a needle cloth and drawing is performed using a drawing frame; then heat and moisture treatment is performed at 80°C and a relative humidity of 60% for 10 minutes, and finally roving is produced using a siro spinning machine; the roving is post-treated with a treating agent at 90°C for 15 minutes, and the bath ratio is 1:13 to obtain bulky lamb wool yarn; wherein the treating agent is a polyurethane emulsion; the solid content of the polyurethane emulsion is 30%; the weight ratio of lamb wool fibers to viscose fibers is 2:1, and the viscose fibers are lyocell fibers; and the remaining steps are consistent with Example 1.

[0044] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that, in the preparation of bulky lamb wool yarn, lamb wool fiber and viscose fiber are mixed, and then pre-opened by a compressed air generator to blow the fiber apart; then carded by a card cloth and drawn by a drawing machine; then heat-wet treated for 10 minutes at 80°C and a relative humidity of 60%, and finally roving was made by a siro spinning machine; the roving was post-treated with a treating agent at 90°C for 15 minutes, and the bath ratio was 1:13 to obtain bulky lamb wool yarn; wherein the treating agent is a poly A mixed liquid consisting of a polyurethane emulsion, a graphene dispersion, nano-silica, and a surfactant, wherein the weight ratio of the polyurethane emulsion, the graphene dispersion, the nano-silica, and the surfactant is 100:30:1:0.5; the solid content of the polyurethane emulsion is 30%; the graphene in the graphene dispersion is graphene oxide, and the concentration is 0.1 mg / mL; the surfactant is sodium dodecylbenzene sulfonate; the weight ratio of lamb's wool fiber to viscose fiber is 2:1, and the viscose fiber is lyocell fiber; the remaining steps are consistent with Example 1.

[0045] Performance testing test for thermal insulation performance: Ten wearers are selected to try out the scarf in each embodiment or comparative example, and then the thermal insulation performance is scored on a scale of 1-10. The higher the score, the better the thermal insulation performance. The average value of the ten wearers is then taken as the thermal insulation performance score of the scarf in the embodiment or comparative example.

[0046] Table 1 Performance test results of scarves sample Thermal performance score Example 1 8.1 Example 2 8.6 Example 3 8.7 Example 4 8.7 Example 5 8.2 Example 6 9.0 Example 7 8.8 Example 8 9.4 Example 9 9.2 Example 10 9.7 Embodiment 11 9.5 Example 12 9.8 Comparative Example 1 7.1 Comparative Example 2 7.5 Combining Example 1 and Comparative Examples 1-2, the thermal insulation performance of the scarf in Example 1 is the best. It can be seen that when preparing bulky lambskin yarn, post-treating the roving with a composite treatment agent composed of polyurethane emulsion, graphene dispersion, modified nano-silica, and surfactant can improve the thermal insulation performance of the bulky lambskin yarn, thereby improving the thermal insulation performance of the final scarf.

[0047] Combined with Examples 1-5, the scarf in Examples 2-4 has better thermal insulation performance. It can be seen that when preparing modified nano-silica, the ratio of the modifying liquid to silica is preferably 1:(13-14), and the modified nano-silica has better performance.

[0048] Combining Example 3, Example 6 and Example 7, the scarf in Example 6 has the best thermal insulation performance. It can be seen that when the roving is post-treated with the treating agent, the ratio of the polyurethane emulsion, graphene dispersion, modified nano-silica and surfactant in the treating agent in Example 6 is optimal, thereby achieving the best treatment effect on the roving.

[0049] Combining Example 6, Example 8 and Example 9, the scarf in Example 8 has the best warmth retention performance. It can be seen that the wet heat treatment conditions in Example 8 are optimal, thereby obtaining bulky lambskin yarn with better bulkiness and better warmth retention performance.

[0050] Combining Example 8, Example 10 and Example 11, the scarf in Example 10 has the best thermal insulation performance, which shows that when the roving is post-treated with the treating agent, the treatment conditions in Example 10 are the best.

[0051] In combination with Example 10 and Example 12, it can be seen that when preparing bulky lambswool yarn, when the weight ratio of lambswool fiber to viscose fiber is 3:2, the obtained bulky lambswool yarn also has better thermal insulation performance.

[0052] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A method for processing a light and thin cashmere woolen knitted scarf, characterized in that: The following steps are involved: Preparation of bulky lamb wool yarn: lamb wool fiber and viscose fiber are mixed, and roving is prepared through pre-opening, combing, drawing, heat and moisture treatment, and spinning; the roving is post-treated with a treatment agent to obtain bulky lamb wool yarn; wherein the raw materials of the treatment agent include polyurethane emulsion, graphene dispersion, modified nano-silicon dioxide, and surfactant; Weaving: Weaving fine worsted yarn and bulky lambskin yarn to obtain fabrics; Finishing: the fabric is squeezed and dried, washed, shrunk, piece-dyed, dried, the bottom of the fabric is raised, the surface is sheared, and lightly steamed to obtain the scarf.

2. The method for processing a light and thin cashmere woolen knitted scarf according to claim 1, characterized in that: The weight ratio of the polyurethane emulsion, the graphene dispersion, the modified nano-silicon dioxide and the surfactant in the treating agent is 100:(30-50):(1-5):(0.5-1.5).

3. The method for processing a light and thin cashmere woolen knitted scarf according to claim 1, characterized in that: The graphene in the graphene dispersion is expanded graphite or graphene oxide.

4. The method for processing a light and thin cashmere woolen knitted scarf according to claim 1, characterized in that: The surfactant includes sodium dodecylbenzene sulfonate or sodium dodecyl sulfate.

5. The method for processing a light and thin cashmere woolen knitted scarf according to claim 1, characterized in that: The preparation method of the modified nano silicon dioxide comprises the following steps: First, γ-aminopropyltriethoxysilane, ethanol and water are stirred evenly to obtain a modified solution; Add silicon dioxide with an average particle size of 90 nanometers into a high-speed mixer. During the stirring process, slowly spray the modified liquid into the silicon dioxide. After the spraying is completed, continue stirring, and finally dry to obtain modified nano silicon dioxide.

6. The method for processing a light and thin cashmere woolen knitted scarf according to claim 5, characterized in that: The weight ratio of the modified liquid to the silicon dioxide is 1:(13-14).

7. The method for processing a light and thin cashmere woolen knitted scarf according to claim 1, characterized in that: The viscose fiber includes lyocell fiber or modal fiber.

8. The method for processing a light and thin cashmere woolen knitted scarf according to claim 7, characterized in that: The weight ratio of the lamb wool fiber to the viscose fiber is 2:1 or 3:

2.

9. The method for processing a light and thin cashmere woolen knitted scarf according to claim 1, characterized in that: In the step of preparing the bulky lamb wool yarn, the temperature of the heat and moisture treatment is 80-90° C., the relative humidity is 60-70%, and the time is 10-20 minutes.

10. The method for processing a light and thin cashmere woolen knitted scarf according to claim 1, characterized in that: In the step of preparing the bulky lamb wool yarn, when the roving is post-treated with a treating agent, the bath ratio is 1:(13-17), the temperature is 90-95° C., and the time is 15-25 min.