Wear-resistant white high-curl single-component PET (Polyethylene Terephthalate) elastic fabric

Abstract

The invention belongs to the technical field of textile materials, and particularly relates to a wear-resistant white high-curling single-component PET (polyethylene terephthalate) elastic fabric, which is characterized in that a single-component PET raw material is adopted to produce a high-curling single-component PET elastic yarn to replace a spandex wrap yarn or a covering yarn, so that the dependence of a non-spandex elastic fabric on a double-component elastic yarn is reduced; and the prepared fabric omits processes such as gray fabric pre-shaping and pre-dyeing pre-shaping, the process is simpler, the quality is more controllable, the problem that the two-component elastic fabric is easy to polish white is solved, the whiteness is lasting, the fabric is not easy to yellow, and the high-curling performance is stable.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textile materials, and particularly relates to a wear-resistant white high crimp single-component PET elastic fabric. BACKGROUND

[0002] The existing market elastic fibers are mainly divided into three categories of double-component elastic fiber, high-elasticity elastic fiber and spandex covered elastic fiber, but all have significant defects.

[0003] The double-component elastic fiber utilizes the shrinkage difference of two components to form a spiral crimp structure, has good cotton feeling and elasticity, but the crimp protrusions lead to a large friction coefficient, low yarn strength, and easy breakage and abrasion during wearing, affecting the appearance.Moreover, the core components PBT or PTT cannot be regenerated, and it is difficult to meet the demand for full-regeneration materials.

[0004] The high-elasticity elastic fiber is false twist yarn without passing through a two-way heat box, has a fluffy and soft hand feeling, but the elasticity is far inferior to that of the double-component elastic fiber, and cannot be replaced.

[0005] The spandex covered fiber needs to be combined with spandex and outer covered fiber through twisting or network method, and needs to go through many complex processes such as gray cloth setting, pre-shrinking, pre-setting, dyeing and finished product setting, and the quality control is difficult. At the same time, the spandex is easy to be exposed, has poor light fastness, is easy to be brittle, has a large shrinkage when treated at low tension, and the fabric surface is easy to produce shrinkage wrinkles, and the excess elasticity affects the wearing experience. SUMMARY

[0006] To solve the problems in the background art, the present application provides a wear-resistant white high crimp single-component PET elastic fabric.

[0007] The technical scheme of the present application is as follows: The present application provides a wear-resistant white high crimp single-component PET elastic fabric, and the warp yarn and / or weft yarn of the elastic fabric is high crimp single-component polyethylene terephthalate elastic yarn. The high crimp single-component polyethylene terephthalate elastic yarn has a crimp number of 20-80 / cm, an elastic elongation of 10-30%, and an elastic recovery rate of 75%-90%.

[0008] Further, the elastic fabric has a fluffy coefficient of 2-5 cm / g, a wear resistance of ≥15000 times measured by GB / T21196.2-2007, and a color change of ≥4 levels at 5000 turns of seam wear resistance measured by GB / T21196.2-2007. 3

[0009] Further, the elastic fabric adopts a three original weave, a check weave or a three original change weave.

[0010] Further, the polyethylene terephthalate is a petroleum-based virgin polyethylene terephthalate, a bottle piece physical method regenerated polyethylene terephthalate, or a textile chemical method regenerated polyethylene terephthalate.

[0011] The application also provides a preparation method of the wear-resistant white high crimping single-component PET elastic fabric, comprising: (1) producing a high crimping single-component polyethylene terephthalate elastic yarn: taking single-component polyethylene terephthalate pre-oriented yarn as raw material, performing drawing and false twist processing while high-temperature heat treatment is performed; (2) weaving a grey fabric: taking the high crimping single-component polyethylene terephthalate elastic yarn as warp yarn and / or weft yarn, and weaving the grey fabric by using three original weave, check weave or three original change weave; (3) post-processing: the grey fabric is made into a finished product through flat finishing, dyeing and finishing and setting.

[0012] Further, the high-temperature heat treatment in step (1) is performed at a temperature of 170-220°C, and the drawing ratio is 1.6-1.75 times; and the twisting coefficient is 24000-34000 during false twist processing.

[0013] The false twist mode is stack disc false twist, belt false twist or rotor false twist.

[0014] Further, the pre-crystallization treatment condition during production of the single-component polyethylene terephthalate pre-oriented yarn in step (1) is that the crystallization temperature is controlled to be 120-140°C, and the crystallization time is 15-30 min.

[0015] In addition, the covering factor is set to be 65-85% of the covering factor of the finished product during weaving of the grey fabric in step (2).

[0016] Beneficial effects The single-component PET raw material is used to produce a high crimping single-component polyethylene terephthalate elastic yarn, which replaces spandex covering yarn or core-spun yarn, reduces the dependence of non-spandex elastic fabric on double-component elastic yarn, and the fabric made of the high crimping single-component polyethylene terephthalate elastic yarn does not need grey fabric pre-setting, pre-setting before dyeing and other processes, the process is simpler, the quality is more controllable, the problem of easy whitening of double-component elastic fabric is solved, the whiteness is durable and not easy to yellow, and the high crimping performance is stable. Specific implementation

[0017] The following examples are intended to illustrate the application, but not to further limit the application.

[0018] This invention provides a wear-resistant white high-shrinkage single-component PET elastic fabric, wherein the warp and / or weft yarns constituting the elastic fabric are high-shrinkage single-component polyethylene terephthalate (PET) elastic yarns; the high-shrinkage single-component polyethylene terephthalate elastic yarns have a crimp number of 20-80 crimps / cm, an elastic elongation of 10-30%, and an elastic recovery rate of 75%-90%.

[0019] Furthermore, the elastic fabric has a bulk factor of 2-5 cm. 3 / g, GB / T21196.2-2007, abrasion resistance ≥15000 cycles, GB / T21196.2-2007, seam abrasion resistance ≥4 grade at 5000 revolutions.

[0020] Furthermore, the elastic fabric is constructed using a ternary structure, a lattice structure, or a ternary variation structure.

[0021] Furthermore, the aforementioned polyethylene terephthalate is petroleum-based virgin polyethylene terephthalate, physically recycled polyethylene terephthalate via the bottle-flake method, or chemically recycled polyethylene terephthalate via textile processing. The raw materials meet environmental recycling requirements, solving the problem that bicomponent fibers cannot be fully recycled.

[0022] This invention uses single-component PET raw materials, which have a stable fiber molecular chain structure, combining high strength and good toughness. It solves the problem of easy fading of bicomponent elastic fabrics, maintains whiteness for a long time and is not prone to yellowing, and has stable high shrinkage performance.

[0023] This invention also provides a method for preparing the aforementioned abrasion-resistant, high-shrinkage single-component PET elastic fabric, which eliminates the need for complex processes such as pre-forming of the greige fabric and pre-dyeing required for spandex-coated fibers, thereby improving production efficiency. The method includes: (1) Production of high shrinkage single-component polyethylene terephthalate elastic yarn: using single-component polyethylene terephthalate pre-oriented yarn as raw material, it is produced by stretching and false twisting while being heat-treated at high temperature. (2) Fabric weaving: Fabric is woven using the high-shrinkage single-component polyethylene terephthalate elastic yarn as warp and / or weft yarns, and employing a three-primary structure, a grid structure, or a three-primary variation structure. (3) Post-processing: The greige fabric is refined, dyed, and finished to produce the finished product.

[0024] In step (1), the high-temperature heat treatment is performed at a temperature of 170℃-220℃; the draw ratio is 1.6-1.75 times; and the twisting coefficient is 24000-34000 during false twisting.

[0025] Furthermore, the false twisting methods include stacked disc false twisting, belt false twisting, or rotor false twisting.

[0026] In addition, during the production of single-component polyethylene terephthalate pre-oriented yarn in step (1), the pre-crystallization treatment conditions are as follows: the crystallization temperature is controlled at 120℃-140℃, and the crystallization time is 15-30min. This maintains the crystallinity of the raw material at 35%-45%, avoiding excessive shrinkage or yellowing of the fibers during subsequent high-temperature processing.

[0027] Preferably, the pre-crystallized product is subjected to high-temperature heat treatment: 35%-40% crystallinity corresponds to 170℃-190℃ to avoid fiber embrittlement and curling / compression; 40%-45% corresponds to 190℃-220℃ to ensure that the curled structure is fully formed and stable, thereby achieving synergistic optimization of wear resistance and curling performance.

[0028] In addition, in step (2), when weaving the greige fabric, the coverage factor is set to 65%-85% of the finished product coverage factor.

[0029] This invention uses single-component PET raw materials to produce a high-shrinkage single-component polyethylene terephthalate elastic yarn, which replaces spandex-covered yarn or core-spun yarn. This reduces the dependence of non-spandex elastic fabrics on bicomponent elastic yarns, and the fabrics made from it eliminate the need for pre-forming of greige fabric and pre-dyeing, making the process simpler and the quality more controllable. It solves the problem of easy fading of bicomponent elastic fabrics, maintains whiteness and is not prone to yellowing, and has stable high shrinkage performance.

[0030] It should be noted that the testing and calculation methods for each parameter involved in this invention are as follows: (1) Elastic elongation and elastic recovery rate: refer to constant force elongation and constant force elastic recovery rate in FZ / T01034-2008.

[0031] (2) Looseness coefficient: the volume occupied by a unit mass, calculated as: [thickness (mm) / weight (g / m³)] 2 )]*1000.

[0032] (3) Twist coefficient = Daniel 1 / 2 *The twist degree during false twisting, wherein the method for determining the twist degree during false twisting is: cut the yarn between the cooling plate and the false twister, and measure the actual twist degree.

[0033] (4) Coverage factor: The coverage factor is divided into the warp coverage factor and the weft coverage factor. The warp (weft) coverage factor = (warp (weft) yarn denier) 1 / 2 * Warp (weft) density (roots / inch).

[0034] (5) Number of curls: Refer to GB / T14338-2022.

[0035] Example 1 This embodiment provides a wear-resistant white high-shrinkage single-component PET elastic fabric. The warp and weft yarns of the elastic fabric are both 53D high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarns. The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn has a crimp count of 40 crimps / cm, an elastic elongation rate of 18% in the elastic yarn direction, and an elastic recovery rate of 80%.

[0036] According to GB / T21196.2-2007, the abrasion resistance of this elastic fabric is 35,000 cycles, and the color change at 5,000 revolutions at the seam is grade 4-5.

[0037] This elastic fabric is prepared through the following steps: (1) Production of high shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn: using petroleum-based virgin single-component polyethylene terephthalate pre-oriented yarn as raw material, introducing texturing equipment, and simultaneously heat-treating at 180℃, while being stretched 1.6 times by roller No. 1 and roller No. 2, and processed by rotor false twisting with a twist coefficient of 28000.

[0038] (2) Fabric weaving: The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn is used as the warp and weft yarns, the fabric coverage coefficient is set to 66% of the finished product coverage coefficient, and the fabric structure is 2 / 2 twill weave.

[0039] (3) Post-processing: The grey fabric is refined, dyed, and finished to produce the finished product, with a bulk factor of 3.77 cm. 3 / g.

[0040] Example 2 This embodiment provides a wear-resistant white high-shrinkage single-component PET elastic fabric. The warp and weft yarns of the elastic fabric are both 75D high-shrinkage recycled bottle flake single-component polyethylene terephthalate elastic yarns. The high-shrinkage recycled bottle flake single-component polyethylene terephthalate elastic yarn has a crimp number of 32 crimps / cm, an elastic elongation rate of 15% in the elastic yarn direction, and an elastic recovery rate of 85%.

[0041] According to GB / T21196.2-2007, the abrasion resistance of this elastic fabric is 38,000 cycles, and the color change at 5,000 revolutions at the seam is grade 4.

[0042] This elastic fabric is prepared through the following steps: (1) Production of high shrinkage bottle flake recycled single-component polyethylene terephthalate elastic yarn: using bottle flake recycled single-component polyethylene terephthalate pre-oriented yarn as raw material, introducing texturing equipment, and simultaneously heat-treating at 195℃, while being stretched by 1.65 times through No. 1 roller and No. 2 roller, and processed by stacked disc false twisting with a twist coefficient of 24000.

[0043] (2) Fabric weaving: The high-shrinkage bottle sheet recycled single-component polyethylene terephthalate elastic yarn is used as the warp and weft yarns, the fabric coverage coefficient is set to 75% of the finished product coverage coefficient, and the fabric structure is plain weave.

[0044] (3) Post-processing: The grey fabric is refined, dyed, and finished to produce the finished product, with a bulk factor of 2.50 cm. 3 / g.

[0045] Example 3 This embodiment provides a wear-resistant white high-shrinkage single-component PET elastic fabric. The warp and weft yarns of the elastic fabric are both 110D high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarns. The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn has a crimp count of 22 crimps / cm, an elastic elongation of 28% in the elastic yarn direction, and an elastic recovery rate of 78%.

[0046] According to GB / T21196.2-2007, the abrasion resistance of this elastic fabric is 15,000 cycles, and the color change at seam abrasion resistance of 5,000 revolutions is grade 4-5.

[0047] This elastic fabric is prepared through the following steps: (1) Production of high shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn: using petroleum-based virgin single-component polyethylene terephthalate pre-oriented yarn as raw material, introducing texturing equipment, and simultaneously heat-treating at 215℃, while being stretched 1.7 times by roller No. 1 and roller No. 2, and processed by rotor false twisting with a twist coefficient of 32000.

[0048] (2) Fabric weaving: The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn is used as the warp and weft yarns, the fabric coverage coefficient is set to 85% of the finished product coverage coefficient, and the fabric structure is 3 / 3 twill weave.

[0049] (3) Post-processing: The grey fabric is refined, dyed, and finished to produce the finished product, with a bulk factor of 4.86 cm. 3 / g.

[0050] Example 4 This embodiment provides a wear-resistant white high-shrinkage single-component PET elastic fabric. The warp and weft yarns of the elastic fabric are both 30D high-shrinkage chemically recycled single-component polyethylene terephthalate elastic yarns. The high-shrinkage chemically recycled single-component polyethylene terephthalate elastic yarn has a crimp number of 48 crimps / cm, an elastic elongation of 25% in the elastic yarn direction, and an elastic recovery rate of 75%.

[0051] According to GB / T21196.2-2007, the abrasion resistance of this elastic fabric is 15,000 cycles, and the color change at 5,000 revolutions at the seam is grade 4.

[0052] This elastic fabric is prepared through the following steps: (1) Production of high shrinkage chemically recycled single-component polyethylene terephthalate elastic yarn: using chemically recycled single-component polyethylene terephthalate pre-oriented yarn as raw material, introducing texturing equipment, and simultaneously heat-treating at 172℃, while being stretched 1.74 times by roller No. 1 and roller No. 2, and processed by belt false twisting with a twist coefficient of 28000.

[0053] (2) Fabric weaving: The high-shrinkage chemically recycled single-component polyethylene terephthalate elastic yarn is used as the warp and weft yarns, the fabric coverage coefficient is set to 70% of the finished product coverage coefficient, and the fabric structure is a grid weave.

[0054] (3) Post-processing: The grey fabric is refined, dyed, and finished to produce the finished product, with a bulk factor of 3.82cm. 3 / g.

[0055] Example 5 This embodiment provides a wear-resistant white high-shrinkage single-component PET elastic fabric, the warp of which is 50D matte low-elastic yarn and the weft yarn is 53D high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn; the high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn has a crimp number of 40 / cm, an elastic elongation of 15% in the elastic yarn direction, and an elastic recovery rate of 80%.

[0056] According to GB / T21196.2-2007, the abrasion resistance of this elastic fabric is 35,000 cycles, and the color change at 5,000 revolutions at the seam is grade 4-5.

[0057] This elastic fabric is prepared through the following steps: (1) Production of high shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn: using petroleum-based virgin single-component polyethylene terephthalate pre-oriented yarn as raw material, introducing texturing equipment, and simultaneously heat-treating at 180℃, while being stretched 1.6 times by roller No. 1 and roller No. 2, and processed by rotor false twisting with a twist coefficient of 28000.

[0058] (2) Fabric weaving: The fabric is woven with dull low-elastic yarn as warp and the high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn as weft. The fabric coverage coefficient on the machine is set to 66% of the finished product coverage coefficient, and the weave structure is 2 / 1 twill weave.

[0059] (3) Post-processing: The grey fabric is refined, dyed, and finished to produce the finished product, with a bulk factor of 2.10cm. 3 / g.

[0060] Example 6 This embodiment provides a wear-resistant white high-shrinkage single-component PET elastic fabric, wherein the warp yarn is 110D high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn and the weft yarn is 100D bicomponent elastic yarn; the high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn has a crimp count of 22 crimps / cm, an elastic elongation rate of 10% in the elastic yarn direction, and an elastic recovery rate of 89%.

[0061] According to GB / T21196.2-2007, the abrasion resistance of this elastic fabric is 15,000 cycles, and the color change at seam abrasion resistance of 5,000 revolutions is grade 4-5.

[0062] This elastic fabric is prepared through the following steps: (1) Production of high shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn: using petroleum-based virgin single-component polyethylene terephthalate pre-oriented yarn as raw material, introducing texturing equipment, and simultaneously heat-treating at 215℃, while being stretched 1.7 times by roller No. 1 and roller No. 2, and processed by rotor false twisting with a twist coefficient of 32000.

[0063] (2) Fabric weaving: The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn is used as the warp yarn and 100D bicomponent elastic yarn (composite of PBT and PET polyester components) is used as the weft yarn. The fabric coverage coefficient on the machine is set to 65% of the finished product coverage coefficient, and the fabric structure is a variable twill weave.

[0064] (3) Post-processing: The grey fabric is refined, dyed, and finished to produce the finished product, with a bulk factor of 4.80 cm. 3 / g.

[0065] Example 7 This embodiment provides a wear-resistant white high-shrinkage single-component PET elastic fabric. The warp and weft yarns of the elastic fabric are both 53D high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarns. The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn has a crimp count of 55 crimps / cm, an elastic elongation rate of 19% in the elastic yarn direction, and an elastic recovery rate of 87%.

[0066] According to GB / T21196.2-2007, the abrasion resistance of this elastic fabric is 50,000 cycles, and the color change at the seam abrasion resistance of 5,000 revolutions is grade 4-5.

[0067] This elastic fabric is prepared through the following steps: (1) Production of high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn: Petroleum-based virgin single-component polyethylene terephthalate pre-oriented yarn is used as raw material. When producing single-component polyethylene terephthalate pre-oriented yarn, the pre-crystallization treatment conditions are as follows: the crystallization temperature is controlled at 135℃ and the crystallization time is 25min, so that the crystallinity of the raw material is maintained at 42%. The pre-crystallized product is introduced into the texturing equipment, and while being heat-treated at 205℃, it is stretched by 1.6 times through rollers No. 1 and No. 2, and false-twisted by a rotor with a twist coefficient of 28000.

[0068] It should be noted that the pre-crystallized products are sampled and measured using a differential scanning calorimeter to ensure that the crystallinity of each batch falls within the corresponding range, and then subjected to appropriate high-temperature heat treatment. When introduced into the texturing equipment, this batch of products is directly fed into the spinning equipment through an insulated conveyor pipe to avoid cooling.

[0069] (2) Fabric weaving: The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn is used as the warp and weft yarns, the fabric coverage coefficient is set to 66% of the finished product coverage coefficient, and the fabric structure is 2 / 2 twill weave.

[0070] (3) Post-processing: The grey fabric is refined, dyed, and finished to produce the finished product, with a bulk factor of 4.51 cm. 3 / g.

[0071] Example 8 This embodiment provides a wear-resistant white high-shrinkage single-component PET elastic fabric. The warp and weft yarns of the elastic fabric are both 53D high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarns. The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn has a crimp number of 28 crimps / cm, an elastic elongation of 14% in the elastic yarn direction, and an elastic recovery rate of 82%.

[0072] According to GB / T21196.2-2007, the abrasion resistance of this elastic fabric is 9000 cycles, and the color change at 5000 revolutions at the seam is grade 3.

[0073] This elastic fabric is prepared through the following steps: (1) Production of high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn: Petroleum-based virgin single-component polyethylene terephthalate pre-oriented yarn is used as raw material. When producing single-component polyethylene terephthalate pre-oriented yarn, the pre-crystallization treatment conditions are as follows: the crystallization temperature is controlled at 125℃ and the crystallization time is 20min, so that the crystallinity of the raw material is maintained at 35%. The pre-crystallized product is introduced into the texturing equipment, and while being heat-treated at 210℃, it is stretched by 1.6 times through rollers No. 1 and No. 2, and false-twisted by a rotor with a twist coefficient of 28000.

[0074] (2) Fabric weaving: The high-shrinkage petroleum-based virgin single-component polyethylene terephthalate elastic yarn is used as the warp and weft yarns, the fabric coverage coefficient is set to 66% of the finished product coverage coefficient, and the fabric structure is 2 / 2 twill weave.

[0075] (3) Post-processing: The grey fabric is refined, dyed, and finished to produce the finished product, with a bulk factor of 1.99cm. 3 / g.

[0076] Comparative Example 1 A T800 elastic fabric, wherein both warp and weft yarns are 75D bicomponent elastic yarns with a crimp count of 45 crimps / cm; the abrasion resistance of the fabric tested using GB / T21196.2-2007 is 8000 cycles, and the color change at 5000 revolutions at the seam abrasion resistance tested using GB / T21196.2-2007 is grade 3; the elastic elongation in the warp and weft directions of the T800 elastic fabric is 20%, and the elastic recovery rate is 80%.

[0077] The preparation method of this T800 elastic fabric is as follows: A greige fabric is made using 75D bicomponent elastic yarn as warp and weft yarns, with a plain weave structure. During yarn production, the false twist coefficient is 20,000, and the cover factor on the greige fabric machine is set to 65% of the finished product's cover factor. The greige fabric undergoes open-width refining, dyeing, finishing, and shaping processes to produce the final product, which has a bulk factor of 1.84 cm. 3 / g.

[0078] Comparative Example 2 A high-elastic fabric, wherein both warp and weft yarns are 110D high-elastic petroleum-based virgin polyester yarn, and the crimp count of the high-elastic petroleum-based virgin polyester yarn is 16 crimps / cm; the abrasion resistance of the fabric tested using GB / T21196.2-2007 is 10,000 cycles, and the color change at 5,000 revolutions at the seam abrasion resistance tested using GB / T21196.2-2007 is grade 3; in this high-elastic fabric, the elastic elongation in the warp and weft directions is 11%, and the elastic recovery rate is 74%.

[0079] The preparation method of this high-elastic fabric involves using 110D high-elastic petroleum-based virgin polyester yarn as warp and weft yarns, with a plain weave structure to produce the greige fabric. During yarn production, the false twist coefficient is 28,000, and the cover coefficient on the greige fabric machine is set to 87% of the finished product's cover coefficient. After plain-width refining, dyeing, finishing, and shaping processes, the greige fabric is produced as the final product, with a bulk factor of 1.73 cm. 3 / g.

[0080] To further demonstrate the performance of the elastic fabric of the present invention, the test data of the above embodiments and comparative examples are summarized in Table 1.

[0081] Table 1 Test data for each embodiment and comparative example The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A wear-resistant, high-shrinkage, single-component PET elastic fabric, characterized in that, The warp and / or weft yarns constituting the elastic fabric are high-shrinkage single-component polyethylene terephthalate elastic yarns. The high-shrinkage single-component polyethylene terephthalate elastic yarn has a crimp count of 20-80 crimps / cm, an elastic elongation of 10-30%, and an elastic recovery rate of 75%-90%.

2. The abrasion-resistant, high-shrinkage, single-component PET elastic fabric according to claim 1, characterized in that, The elastic fabric has a bulk factor of 2-5 cm. 3 / g, GB / T21196.2-2007, abrasion resistance ≥15000 cycles, GB / T21196.2-2007, seam abrasion resistance ≥4 grade at 5000 revolutions.

3. The abrasion-resistant, high-shrinkage, single-component PET elastic fabric according to claim 2, characterized in that, The elastic fabric is constructed using a three-primary structure, a lattice structure, or a variation of the three-primary structure.

4. The abrasion-resistant, high-shrinkage, single-component PET elastic fabric according to claim 1, characterized in that, The polyethylene terephthalate is petroleum-based virgin polyethylene terephthalate, physical recycled polyethylene terephthalate by the bottle-flake method, or textile chemical recycled polyethylene terephthalate.

5. A method for preparing the abrasion-resistant, high-shrinkage, single-component PET elastic fabric as described in claim 1, characterized in that, include: (1) Production of high shrinkage single-component polyethylene terephthalate elastic yarn: using single-component polyethylene terephthalate pre-oriented yarn as raw material, it is produced by stretching and false twisting while being heat-treated at high temperature. (2) Fabric weaving: Fabric is woven using the high-shrinkage single-component polyethylene terephthalate elastic yarn as warp and / or weft yarns, and employing a three-primary structure, a grid structure, or a three-primary variation structure. (3) Post-processing: The greige fabric is refined, dyed, and finished to produce the finished product.

6. The preparation method according to claim 5, characterized in that, The high-temperature heat treatment in step (1) is at a temperature of 170℃-220℃; the draw ratio is 1.6-1.75 times; and the twisting coefficient is 24000-34000 during false twisting.

7. The preparation method according to claim 6, characterized in that, The false twisting method can be stacked disc false twisting, belt false twisting, or rotor false twisting.

8. The preparation method according to claim 5, characterized in that, In step (1), when producing single-component polyethylene terephthalate pre-oriented yarn, the pre-crystallization treatment conditions are as follows: the crystallization temperature is controlled at 120℃-140℃ and the crystallization time is 15-30min.

9. The preparation method according to claim 5, characterized in that, In step (2), when weaving the greige fabric, the coverage factor is set to 65-85% of the finished product coverage factor.

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