Preparation method of heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle

Abstract

The present invention belongs to the technical field of textiles, and relates to a method for preparing a heat and moisture management intelligent fabric spun by polyester-viscose wrapped yarn artificial muscle. When the heat and moisture management intelligent fabric of the present invention is stimulated by environmental humidity and undergoes a torsional response, the fabric generates out-of-plane stress, causing one side of the etching pattern on the surface of the fabric to flip up, forming holes on the fabric; when the environment is dry, the wrapped yarn artificial muscle tends to twist and recover, so that the out-of-plane stress generated by the fabric along the twill line direction is released, the flipped fabric pattern is restored, and the holes are closed. This response characteristic is conducive to the fabric closing the holes after the human body sweat evaporates and maintaining a suitable temperature and humidity microenvironment for the human body. The present invention adopts yarn structure design and bulk textile materials to realize the development of heat and moisture management intelligent fabrics, effectively reduce the cost of products, promote the industrialization of intelligent fabrics, enrich product categories, and increase product added value. By opening and closing pores, the human body microenvironment is regulated, which is conducive to improving the heat and moisture comfort of clothing fabrics.

Description

Technical Field

[0001] The invention belongs to the technical field of textiles and relates to a method for preparing a heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle. Background Art

[0002] Thermal and moisture comfort is one of the important issues in the field of textiles and clothing. The thermal and moisture comfort of fabrics not only determines the quality and market value of fabrics, but is also directly related to the normal physiological health of the human body. In order to maintain a normal core temperature (37±5℃), the human body often needs to constantly change different fabrics according to weather conditions. Therefore, it is of great significance to develop smart fabrics with thermal and moisture management functions.

[0003] Existing research and products mainly include the development of intelligent heat and moisture management fabrics using phase change materials, shape memory polymers, intelligent breathable membranes, carbon nanotubes, graphene, spider silk or silk, infrared response materials, etc. However, these materials are often expensive, some of them have poor skin affinity, have potential human toxicity, and are difficult to meet the large-scale production requirements in the textile field. Therefore, existing research is difficult to achieve industrial application. Summary of the invention

[0004] In order to solve the problems that the above-mentioned materials are expensive, complicated to prepare and difficult to mass produce, the present invention proposes a heat and moisture management intelligent fabric made of multi-stage spirally wrapped yarn artificial muscle based on polyester and viscose textile bulk fibers and a preparation method thereof.

[0005] The technical solution of the present invention:

[0006] The preparation method of heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle is as follows:

[0007] The first step: spinning the viscose fiber and the polyester fiber separately, with the twisting direction being z-twist or s-twist, and the twisting directions of the viscose fiber and the polyester fiber being opposite;

[0008] Step 2: heat setting the viscose yarn and polyester yarn obtained in step 1 respectively;

[0009] Step 3: spirally wrapping the viscose yarn obtained in step 2 around the outer layer of the obtained polyester yarn to form a wrapped yarn artificial muscle, wherein the wrapping direction is the same as the twisting direction of the viscose yarn;

[0010] Step 4: Use the Z-twisted and S-twisted wrapped yarn artificial muscles as warp and weft yarns to weave the woven fabric, with the twisting directions of the warp and weft yarns being opposite;

[0011] Step 5: Etch a pattern array on the woven fabric woven in step 4, where one side of each pattern in the pattern array is cut; one side is connected to the fabric body to form holes that can intelligently respond to humidity changes, thereby obtaining a heat and moisture management intelligent fabric.

[0012] Among them, the spinning method in step 1 adopts ring spinning, the twist of viscose yarn is 300-800 twists / 10cm, and the twist of polyester yarn is 50-100 twists / 10cm.

[0013] Step 2: The heat setting temperature is 80-120°C and the time is 20-60 minutes.

[0014] Step 3: Wrapping is performed using a hollow spindle or a braiding machine, and the wrapping pitch is 0.1-5 cm.

[0015] Step 4: The woven fabric can be plain, twill, satin or a combination or variation of the three.

[0016] Each pattern of the pattern array described in step 5 is semicircular or semirectangular, and the length of the connection between each pattern and the fabric body is no more than 3 / 4 of the circumference of the pattern.

[0017] The present invention combines viscose fiber with good hygroscopicity and polyester fiber with low hygroscopicity, twists the viscose fiber to form a strong twist single yarn, and then spirally wraps the strong twist single yarn with low twist polyester fiber to form a wrapped composite yarn artificial muscle with a core-sheath structure in which the viscose fiber is the sheath layer and the polyester fiber is the core layer (see Figure 1 ).

[0018] In a humid environment, the sheath layer of the wrapped composite yarn artificial muscle absorbs moisture, expands and untwists, and transfers the twist to the core layer of polyester fibers; when the environment is dry, the viscose fibers release moisture and shrink, and the twisted core layer of polyester fibers returns to a low-twist state and transfers the twist back to the sheath layer of viscose fibers.

[0019] Therefore, the wrapped yarn artificial muscle of the core-sheath structure can make intelligent twisting and recovery responses to dry and wet environments. The wrapped yarn artificial muscle is prepared with different twisting directions (i.e., Z twist and S twist), and the wrapped yarn artificial muscles with different twisting directions are used as warp yarns and weft yarns to weave fabrics to form woven fabrics (see Figure 2 and Figure 3 ), and use laser etching to etch semicircular or semi-rectangular patterns on the fabric (see Figure 4 ).

[0020] When the wrapped yarn artificial muscle is stimulated by the ambient humidity and responds to torsion, the fabric generates out-of-plane stress, causing the etched side of the pattern to flip up, forming holes on the fabric. This response characteristic is conducive to the fabric opening holes when the human body sweats, accelerating the evaporation of human sweat and the air flow between the human body and the fabric microenvironment, thereby facilitating the heat dissipation of the human body; when the environment is dry, the wrapped yarn artificial muscle tends to twist and recover, so the out-of-plane stress generated by the fabric along the twill line direction is released, the flipped fabric pattern is restored, and the holes are closed. This response characteristic is conducive to the fabric closing the holes after the human sweat evaporates and maintaining a suitable temperature and humidity microenvironment for the human body, thereby forming heat and humidity management performance (see Figure 5 ).

[0021] Beneficial effects of the present invention:

[0022] (1) Using yarn structure design and bulk textile materials to develop intelligent fabrics for heat and moisture management, effectively reduce product costs, promote the industrialization of intelligent fabrics, enrich product categories, and increase product added value.

[0023] (2) By opening and closing pores, the human body microenvironment can be regulated, which is beneficial to improving the thermal and moisture comfort of clothing fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the polyester-viscose wrapped yarn artificial muscle;

[0025] Figure 2 This is a schematic diagram of the structure of the heat and moisture management fabric;

[0026] Figure 3 The actual pictures of heat and moisture management fabric in dry state (left) and wet state (right);

[0027] Figure 4 This is a schematic diagram of the morphology of etching patterns on the surface of heat and moisture management fabrics;

[0028] Figure 5 This is a schematic diagram of the function of heat and moisture management fabrics;

[0029] Figure 6 The evolution diagram of the torsion angle of the wrapped yarn artificial muscle as it absorbs / releases moisture;

[0030] Figure 7 The torsional velocity evolution diagram of the wrapped yarn artificial muscle as it absorbs / releases moisture;

[0031] Figure 8 The torsion angle variation of the wrapped yarn artificial muscle during 50 actuation cycles;

[0032] Fig. 9 This is a curve diagram showing the relationship between the rolling angle of the fabric piece at the hole and the moisture absorption of the fabric.

[0033] In the figure: 1-polyester fiber; 2-viscose fiber. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and technical solutions.

[0035] Embodiment 1:

[0036] The preparation method of heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle is as follows:

[0037] The first step: spinning the viscose fiber and the polyester fiber separately, with the twisting direction being z-twist, and the twisting directions of the viscose fiber and the polyester fiber being opposite;

[0038] Step 2: heat setting the viscose yarn and polyester yarn obtained in step 1 respectively;

[0039] Step 3: Using a hollow spindle method, the viscose yarn obtained in step 2 is spirally wrapped around the outer layer of the obtained polyester yarn to form a wrapped yarn artificial muscle, and the wrapping direction is the same as the twisting direction of the polyester yarn;

[0040] Step 4: Use the Z-twisted wrapped yarn artificial muscle as the warp and weft yarns to weave the woven fabric, and the twisting directions of the warp and weft yarns are opposite;

[0041] Step 5: Etch a pattern array on the woven fabric woven in step 4, where one side of each pattern in the pattern array is cut; one side is connected to the fabric body to form holes that can intelligently respond to humidity changes, thereby obtaining a heat and moisture management intelligent fabric.

[0042] Among them, the spinning method in step 1 adopts ring spinning, the twist of viscose yarn is 300 twists / 10cm, and the twist of polyester yarn is 50 twists / 10cm.

[0043] Step 2: The heat setting temperature is 80°C and the time is 60 minutes.

[0044] Step 3: Wrapping is performed using a hollow spindle or a braiding machine, with a wrapping pitch of 0.1 cm.

[0045] Step 4: The woven fabric can be plain, twill, satin or a combination or variation of the three.

[0046] Each pattern of the pattern array described in step 5 is semicircular or semirectangular, and the length of the connection between each pattern and the fabric body is 1 / 2 of the circumference of the pattern.

[0047] Embodiment 2:

[0048] The first step: Spinning the viscose fiber and the polyester fiber separately, with the twisting direction being S-twist, and the twisting directions of the viscose fiber and the polyester fiber being opposite;

[0049] Step 2: heat setting the viscose yarn and polyester yarn obtained in step 1 respectively;

[0050] Step 3: spirally wrapping the viscose yarn obtained in step 2 around the outer layer of the obtained polyester yarn to form a wrapped yarn artificial muscle, wherein the wrapping direction is the same as the twisting direction of the viscose yarn;

[0051] Step 4: Use the Z-twisted and S-twisted wrapped yarn artificial muscles as warp and weft yarns to weave the woven fabric, with the twisting directions of the warp and weft yarns being opposite;

[0052] Step 5: Etch a pattern array on the woven fabric woven in step 4, where one side of each pattern in the pattern array is cut; one side is connected to the fabric body to form holes that can intelligently respond to humidity changes, thereby obtaining a heat and moisture management intelligent fabric.

[0053] Among them, the spinning method in step 1 adopts ring spinning, the twist of viscose yarn is 800 twists / 10cm, and the twist of polyester yarn is 100 twists / 10cm.

[0054] Step 2: The heat setting temperature is 120°C and the time is 20 minutes.

[0055] Step 3: Wrapping is performed using a hollow spindle or a braiding machine, with a wrapping pitch of 0.5 cm.

[0056] Step 4: The woven fabric can be plain, twill, satin or a combination or variation of the three.

[0057] Each pattern of the pattern array described in step 5 is semicircular or semirectangular, and the length of the connection between each pattern and the fabric body is no more than 3 / 4 of the circumference of the pattern.

[0058] Embodiment 3:

[0059] The spinning parameters of viscose yarn are as follows: viscose filament (150D / 30F) is fed from the front roller of the ring spinning machine, the front roller speed is 4m / min, and the spinning machine nail winding speed is 8000rpm.

[0060] The spinning parameters of polyester yarn are as follows: polyester filament (120D / 60F) ring spinning machine front roller feeding, front roller speed of 10m / min, and spinning machine nail winding speed of 2000rpm.

[0061] The test results of yarn torsional velocity, torsional acceleration and durability are as follows: Figure 6 to Figure 8 shown.

[0062] The fabric is woven using a shuttle loom. Twill weave.

[0063] Fabric driving performance - the relationship between the rolling angle of the fabric sheet and the moisture absorption of the fabric Fig. 9 shown.

Claims

1. A method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle, characterized in that: Here are the steps: The first step: spinning the viscose fiber and the polyester fiber separately, with the twisting direction being z-twist or s-twist, and the twisting directions of the viscose fiber and the polyester fiber being opposite, thereby obtaining viscose fiber yarns with different twist directions and polyester fiber yarns with different twist directions; Step 2: heat setting the viscose yarn and polyester yarn obtained in step 1 respectively; Step 3: spirally wrapping the viscose yarn obtained in step 2 around the outer layer of the obtained polyester yarn to form a wrapped yarn artificial muscle, wherein the wrapping direction is the same as the twisting direction of the viscose yarn; Step 4: Use the Z-twisted and S-twisted wrapped yarn artificial muscles as warp and weft yarns to weave the woven fabric, with the twisting directions of the warp and weft yarns being opposite; Step 5: etching a pattern array on the woven fabric woven in step 4, wherein one side of each pattern of the pattern array is cut and one side is connected to the fabric body, so as to form holes that can intelligently respond to humidity changes, thereby obtaining a heat and moisture management intelligent fabric; Among them, the spinning method in step 1 adopts ring spinning, the twist of viscose yarn is 300-800 twists / 10cm, and the twist of polyester yarn is 50-100 twists / 10cm.

2. The method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle according to claim 1, characterized in that: In the step 2, the heat setting temperature is 80-120°C and the time is 20-60 minutes.

3. The method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle according to claim 1 or 2, characterized in that: In the third step, the wrapping is performed using a hollow spindle or a braiding machine, and the wrapping pitch is 0.1-5 cm.

4. The method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle according to claim 1 or 2, characterized in that: In the fourth step, the woven fabric is plain weave, twill weave, satin weave or a combination or variation of the three weaves.

5. The method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle according to claim 3, characterized in that: In the fourth step, the woven fabric is plain weave, twill weave, satin weave or a combination or variation of the three weaves.

6. The method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle according to claim 1, 2 or 5, characterized in that: In the fifth step, each pattern of the pattern array is semicircular or semirectangular, and the length of the connection between each pattern and the fabric body is no more than 3 / 4 of the circumference of the pattern.

7. The method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle according to claim 3, characterized in that: In the fifth step, each pattern of the pattern array is semicircular or semirectangular, and the length of the connection between each pattern and the fabric body is no more than 3 / 4 of the circumference of the pattern.

8. The method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle according to claim 4, characterized in that: In the fifth step, each pattern of the pattern array is semicircular or semirectangular, and the length of the connection between each pattern and the fabric body is no more than 3 / 4 of the circumference of the pattern.

9. The fabric produced by the method for preparing heat and moisture management intelligent fabric made of polyester-viscose wrapped yarn artificial muscle according to any one of claims 1 to 8, characterized in that: When stimulated by the ambient humidity and undergoing a torsional response, the fabric generates out-of-plane stress, causing the etched side of the pattern to flip up and form holes on the fabric. This response characteristic is beneficial for the fabric to open holes when the human body sweats, accelerating the evaporation of human sweat and the flow of air between the human body and the fabric microenvironment, thereby facilitating the heat dissipation of the human body. When the environment is dry, the wrapped yarn artificial muscle tends to twist and recover, so that the out-of-plane stress generated by the fabric along the twill line direction is released, the flipped-up fabric pattern recovers, and the holes are closed. This response characteristic is beneficial for the fabric to close the holes after the human sweat evaporates and maintain a suitable temperature and humidity microenvironment for the human body, thereby forming heat and moisture management performance.

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