A nylon fabric with a metallic sheen, its preparation method and applications

Abstract

This invention relates to a nylon fabric with a metallic sheen, its preparation method, and its application, belonging to the field of fabric technology. The metallic sheen nylon fabric is woven from warp and weft yarns. The warp yarns are triangular bright yarns, and the weft yarns are composite colored yarns prepared by a sheath-core composite spinning method using EVA plastic as the sheath and polyamide as the core, with environmentally friendly color masterbatch incorporated. The environmentally friendly color masterbatch, by weight, includes 60-70 parts of polyamide chips, 10-20 parts of vegetable carbon black powder, 6-10 parts of nano-maifanite powder, 5-10 parts of cottonseed oil, and 1-5 parts of dispersant. The fabric of this invention uses environmentally friendly color masterbatch as the raw material for the weft yarn, and does not undergo dyeing during production, making it more environmentally friendly. In addition, the fabric of this invention has a metallic sheen with a soft luster, is soft, has a down-retaining and down-proof appearance, and provides good wearing comfort.

Description

Technical Field

[0001] This invention belongs to the field of fabric technology, specifically relating to a nylon fabric with a metallic sheen, its preparation method, and its application. Background Technology

[0002] Nylon fabric is a commonly used textile fabric. The structure and properties of nylon fibers are similar to those of natural silk, and it has good abrasion resistance and strength. Moreover, it is relatively lightweight, making it very suitable as a fabric for daily life and outdoor work. As consumers increase their demand for the aesthetics of clothing, the requirements for improving the color and luster of fabrics are increasing.

[0003] Currently, fabrics generally achieve different colors and lusters through pigments. However, the environmental pollution caused by dye post-processing during the production of dyed fabrics, as well as the inherent color differences and poor color fastness of the dyed fabrics themselves, limit their development potential. Currently, adding masterbatch for pre-spinning dyeing is an energy-saving and environmentally friendly dyeing technology. The key to this technology lies in the quality of fiber-grade masterbatch. In addition, improving the production process is also an effective way to enhance the wearing performance of nylon fabrics, thereby further expanding the application range of nylon fabrics. In response to the above problems, this invention provides a nylon fabric with a metallic sheen, its preparation method, and its application. Summary of the Invention

[0004] The purpose of this invention is to provide a nylon fabric with a metallic sheen, its preparation method, and its application in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] As a first aspect of the present invention, the present invention provides a nylon fabric with a metallic sheen, woven from warp and weft yarns, wherein the warp yarns are triangular bright yarns, and the weft yarns are composite colored yarns prepared by a sheath-core composite spinning method using EVA plastic as the sheath and polyamide as the core, and incorporating environmentally friendly color masterbatch.

[0007] The environmentally friendly masterbatch, by mass fraction, includes 60-70 parts polyamide chips, 10-20 parts vegetable carbon black powder, 6-10 parts nano-maifan stone powder, 5-10 parts cottonseed oil, and 1-5 parts dispersant.

[0008] As a further optimization of the present invention, the plant carbon black is wood charcoal powder or bamboo charcoal powder.

[0009] As a further optimization of the present invention, the preparation method of the composite colored yarn is as follows: first, EVA plastic, polyamide and environmentally friendly color masterbatch are dried, then the three are put into a screw extruder for melt extrusion, then into a composite spinning equipment for spinning, and finally the composite colored yarn is obtained by one-step stretching and shaping.

[0010] As a further optimization of the present invention, the mass ratio of the EVA plastic chips, polyamide chips and environmentally friendly color masterbatch is 30-40:40-50:10-30.

[0011] As a second aspect of the invention, the invention also provides an application of nylon fabric with a metallic sheen as described above in the field of down jackets.

[0012] As a third aspect of the present invention, the present invention also provides a method for preparing a nylon fabric with a metallic sheen as described in any of the above descriptions, comprising the following steps:

[0013] (1) Weigh the polyamide chips, vegetable carbon black, nano maifan stone powder, cottonseed oil and dispersant according to the formula and put them into a high-speed mixer to stir to obtain a mixture. Add the mixture to a twin-screw extruder for compounding and extrusion. After cooling, pelletizing and drying, environmentally friendly color masterbatch is obtained.

[0014] (2) EVA plastic chips, polyamide chips and environmentally friendly color masterbatch obtained in step (1) are melt-extruded by a screw extruder, then spun by a composite spinning equipment, and finally stretched and shaped to obtain composite color yarn;

[0015] (3) Using triangular bright yarn as the warp and the composite colored yarn obtained in step (2) as the weft, weave the fabric and then calender the woven fabric to obtain the nylon fabric with metallic sheen.

[0016] As a further optimization of the present invention, in step (3), the diameter of the warp and weft is 20D, the warp weaving density is 110-120 / cm, the weft weaving density is 65-75 / cm, and the weaving structure is 2 / 1 twill.

[0017] As a further optimization of the present invention, in step (3), the calendering is divided into three stages. The temperature of the first and second calendering is 170-190℃, the temperature of the third calendering is 150-170℃, and the fabric is washed after the second calendering.

[0018] As a further optimization of the present invention, the temperature of the water washing is not higher than 60°C, and the processing time is 1-2 minutes.

[0019] The beneficial effects of this invention are as follows:

[0020] (1) This invention studies the composition ratio of environmentally friendly color masterbatch and prepares composite color yarn by combining environmentally friendly color masterbatch with EVA plastic chips and polyamide chips. The composite color yarn is used as the weft and triangular bright yarn is used as the warp to weave fabric, which gives the fabric a metallic luster, soft luster, soft hand feel, and improved wearing comfort;

[0021] (2) The weft yarn of the present invention uses environmentally friendly masterbatch as raw material, which does not require a dyeing process and is more environmentally friendly;

[0022] (3) The fabric of the present invention is calendered in three stages, and has the characteristics of being non-fleece-proof and having a soft luster. Detailed Implementation

[0023] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Example 1

[0025] This embodiment provides a nylon fabric with a metallic sheen, woven from warp and weft yarns, and its preparation method includes the following steps:

[0026] (1) Weigh 60 parts of polyamide chips, 20 parts of charcoal powder, 6 parts of nano maifan stone powder, 10 parts of cottonseed oil and 1 part of dispersant NNO according to the mass fraction and put them into a high-speed mixer and stir evenly to obtain a mixture. Add the mixture to a twin-screw extruder for compounding and extrusion. The extrusion temperature is 260℃. After cooling, pelletizing and drying, environmentally friendly color masterbatch is obtained.

[0027] (2) First, EVA plastic, polyamide, and environmentally friendly masterbatch are dried separately. Then, EVA plastic chips and polyamide chips are sequentially fed into a screw extruder for melt extrusion. The environmentally friendly masterbatch is added when the polyamide chips are melted. The mass ratio of EVA plastic chips, polyamide chips, and environmentally friendly masterbatch is 30:50:20. The screw temperature in each zone is 260 / 260 / 260℃ (polyamide chips) and 170 / 175 / 175℃ (EVA plastic chips); the extrusion pressure is 10.0 MPa (polyamide chips) and 7.5 MPa (EVA plastic chips). The composite yarn is then spun using a composite spinning equipment and finally stretched and shaped to obtain composite colored yarn. The stretch ratio is 2.6 and the spinning speed is 2800 m·min. -1 .

[0028] (3) Using triangular bright yarn as the warp and the composite colored yarn obtained in step (2) as the weft, the fabric is woven. The diameter of the warp and weft is 20D. The warp weaving density is 110 / cm, the weft weaving density is 75 / cm, and the weaving structure is 2 / 1 twill. Finally, the woven fabric is calendered to obtain the nylon fabric with metallic sheen. The calendering is performed in three stages. The temperature of the first and second calendering is 170℃, and the temperature of the third calendering is 170℃. After the second calendering, the fabric is washed with water at a temperature of 60℃ for 1 minute.

[0029] Example 2

[0030] This embodiment provides a nylon fabric with a metallic sheen, woven from warp and weft yarns, and its preparation method includes the following steps:

[0031] (1) Weigh 70 parts of polyamide chips, 10 parts of bamboo charcoal powder, 10 parts of nano maifan stone powder, 5 parts of cottonseed oil and 5 parts of dispersant NNO according to the mass fraction and put them into a high-speed mixer and stir evenly to obtain a mixture. Add the mixture to a twin-screw extruder for compounding and extrusion. The extrusion temperature is 260℃. After cooling, pelletizing and drying, environmentally friendly color masterbatch is obtained.

[0032] (2) First, EVA plastic, polyamide, and environmentally friendly masterbatch are dried separately. Then, EVA plastic chips and polyamide chips are sequentially fed into a screw extruder for melt extrusion. The environmentally friendly masterbatch is added when the polyamide chips are melted. The mass ratio of EVA plastic chips, polyamide chips, and environmentally friendly masterbatch is 40:40:20. The screw temperature (°C) is 260 / 260 / 260 (polyamide chips) and 170 / 175 / 175 (EVA plastic chips); the extrusion pressure (MPa) is 10.0 (polyamide chips) and 7.5 (EVA plastic chips). The composite yarn is then spun using a composite spinning equipment and finally stretched and shaped to obtain composite colored yarn. The stretch ratio is 2.6 and the spinning speed is 2800 m·min. -1 .

[0033] (3) Using triangular bright yarn as the warp and the composite colored yarn obtained in step (2) as the weft, the fabric is woven. The diameter of the warp and weft is 20D. The warp weaving density is 120 / cm, the weft weaving density is 65 / cm, and the weaving structure is 2 / 1 twill. Finally, the woven fabric is calendered to obtain the nylon fabric with metallic sheen. The calendering is performed in three stages. The temperature of the first and second calendering is 190℃, and the temperature of the third calendering is 150℃. After the second calendering, the fabric is washed with water at a temperature of 50℃ for 2 minutes.

[0034] Example 3

[0035] This embodiment provides a nylon fabric with a metallic sheen, woven from warp and weft yarns, and its preparation method includes the following steps:

[0036] (1) Weigh 65 parts of polyamide chips, 15 parts of bamboo charcoal powder, 8 parts of nano maifan stone powder, 7.5 parts of cottonseed oil and 3 parts of dispersant NNO according to the mass fraction and put them into a high-speed mixer and stir evenly to obtain a mixture. Add the mixture to a twin-screw extruder for compounding and extrusion. The extrusion temperature is 260℃. After cooling, pelletizing and drying, environmentally friendly color masterbatch is obtained.

[0037] (2) First, EVA plastic, polyamide, and environmentally friendly masterbatch are dried separately. Then, EVA plastic chips and polyamide chips are sequentially fed into a screw extruder for melt extrusion. The environmentally friendly masterbatch is added when the polyamide chips are melted. The mass ratio of EVA plastic chips, polyamide chips, and environmentally friendly masterbatch is 30:40:30. The screw temperature (°C) is 260 / 260 / 260 (polyamide chips) and 170 / 175 / 175 (EVA plastic chips); the extrusion pressure (MPa) is 10.0 (polyamide chips) and 7.5 (EVA plastic chips). The composite yarn is then spun using a composite spinning equipment and finally stretched and shaped to obtain composite colored yarn. The stretch ratio is 2.6 and the spinning speed is 2800 m·min. -1 .

[0038] (3) Using triangular bright yarn as the warp and the composite colored yarn obtained in step (2) as the weft, the fabric is woven. The diameter of the warp and weft is 20D. The warp weaving density is 115 / cm, the weft weaving density is 70 / cm, and the weaving structure is 2 / 1 twill. Finally, the woven fabric is calendered to obtain the nylon fabric with metallic sheen. The calendering is performed in three stages. The temperature of the first and second calendering is 180℃, and the temperature of the third calendering is 160℃. After the second calendering, the fabric is washed with water at a temperature of 40℃ for 2 minutes.

[0039] Verification test

[0040] 1. To verify the effect of the composition ratio of environmentally friendly masterbatch on the performance of fabric, the composition and ratio of environmentally friendly masterbatch were adjusted according to Table 1. The raw materials of each group were put into a high-speed mixer and stirred evenly to obtain a mixture. The mixture was then added to a twin-screw extruder for compounding and extrusion at a temperature of 260℃. After cooling, pelletizing and drying, environmentally friendly masterbatch samples 1-7 were obtained.

[0041] Table 1. Composition Design Table of Environmentally Friendly Masterbatch

[0042]

[0043] Relevant performance tests:

[0044] (1) Seven fiber samples were prepared according to the method for preparing composite colored yarn described in Example 1. The seven fiber samples were then woven according to step (3) of Example 1 to obtain fabric samples. The color fastness of the fabric samples was tested by soap washing: according to GB / T3921-2008 "Tests for color fastness of textiles - color fastness to soap washing", the fabric samples were sewn together with multi-fiber lining fabric, the bath ratio was 1:30, the soap powder concentration was 5g / L, and the samples were washed at 40℃ for 30min. After drying, the original sample was used as a reference, and the gray scale was used to evaluate the color change of the sample and the staining of the multi-fiber lining fabric.

[0045] (2) The light absorption and heat storage performance of the fabric sample was tested according to the test method specified in GTT TM044-2014 (20-minute temperature difference = temperature of the fabric sample at 20 minutes - temperature of ordinary cotton fabric at 20 minutes).

[0046] The results are shown in Table 2.

[0047] Table 2. Results Statistics Table

[0048]

[0049]

[0050] As can be seen from the table, the fabric made from composite colored yarn obtained by using environmentally friendly color masterbatch performs well in terms of color fastness to soaping. The color fastness of the samples to soaping is all above level 4, with some at level 3, and the staining is all above level 3.

[0051] In addition, environmentally friendly masterbatches with different composition ratios exhibit different performance characteristics in fabrics. For example, compared to samples 3-5, sample 2 has added nano-maifan stone powder to its environmentally friendly masterbatch composition ratio, and its light absorption and heat storage properties are better. Furthermore, comparing sample 2 with samples 3 and 4 respectively shows that the synergistic effect of cottonseed oil and nano-maifan stone powder is better than that of cottonseed oil and nano-tourmaline, resulting in higher values ​​for light absorption and heat storage properties of the fabric.

[0052] 2. To verify the effect of the component ratio of the composite colored yarn on the fabric performance, based on Example 1, in step (2) when preparing the composite colored yarn, the mass ratio of EVA plastic chips, polyamide chips, and environmentally friendly masterbatch was adjusted sequentially to 30:40:30; 30:50:20; 40:40:20; 40:50:10; 35:45:20. The composite colored yarn sample AE was prepared according to the preparation method of the composite colored yarn disclosed in Example 1. The fabric sample was woven according to step (3) of Example 1. In addition, a control sample was set up:

[0053] Control sample F: The mass ratio of polyamide chips and environmentally friendly color masterbatch was 80:20;

[0054] Control sample G: Unlike the preparation method of sample 3, when making composite colored yarn, polyamide is used as the skin, EVA plastic is used as the core, and environmentally friendly color masterbatch is added. The composite colored yarn is prepared by the skin-core composite spinning method (the preparation method is the same as step (2) of Example 1).

[0055] Control sample H: Unlike the preparation method of sample 3, when making composite colored yarn, the core and sheath are not distinguished. Polyamide, EVA plastic and environmentally friendly color masterbatch are directly mixed in mass ratio, melt extruded, spun in spinning equipment, and finally stretched and shaped.

[0056] Relevant performance tests:

[0057] (1) Softness test: The LLY-01 electronic fabric stiffness tester was used to determine the bending stiffness of the specimens according to GB / T18318-2001. During the experiment, each specimen was cut into 3 pieces of 2.5×25cm each in the longitudinal and transverse directions. The bending length of each group was recorded, and the bending stiffness G was calculated. The calculation formula is as follows: G=m×C 3 ×10 -3 Where: G - bending stiffness, mN·cm; m - mass per unit area of ​​the specimen, g / m² 2 c - average bending length of the specimen, cm.

[0058] (2) Testing of the fabric's breaking strength and elongation at break. Instrument: YG(B)0260-250 electronic fabric strength tester. According to the national standard GB / T3923.1-1997 "Tensive Properties of Fabrics - Part 1: Determination of Breaking Strength and Elongation at Break - Strip Method": Pre-tension: 2N; Upper and lower clamp distance: 20mm; Lower clamp descent speed: 102m / s -1 .

[0059] Test method: According to the standard, when using the strip method, the effective width of the sample is 50 mm with a burr of about 5 mm. It is stretched at a constant elongation rate until it breaks. The test is performed 5 times in the warp and 5 times in the weft directions. The breaking strength and elongation at break are recorded and the average value is calculated.

[0060] The results are shown in Table 3.

[0061] Table 3. Results Statistics Table

[0062]

[0063] As can be seen from Table 3, adjusting the mass ratio of EVA plastic chips, polyamide chips, and environmentally friendly masterbatch affects the softness and mechanical properties of the final fabric. Among them, sample 3 (mass ratio of EVA plastic chips, polyamide chips, and environmentally friendly masterbatch is 40:40:20) has better softness and mechanical properties than other samples.

[0064] 3. To verify the impact of calendering on fabric performance, the following comparative examples were set up:

[0065] Comparative Example 1

[0066] The difference between this comparative example and Example 2 is the calendering process in step (3). The calendering process is divided into three steps: the temperature of the first calendering is 180°C, the temperature of the second calendering is 170°C, and the temperature of the third calendering is 155°C. After the second calendering, the fabric is washed with water at a temperature of 60°C for 1 minute.

[0067] Comparative Example 2

[0068] The difference between this comparative example and Example 2 is the calendering process in step (3). The calendering process is divided into two steps. The temperature of the first calendering is 180°C, and the temperature of the second calendering is 170°C. After the second calendering, the fabric is washed with water at a temperature of 60°C for 1 minute.

[0069] Comparative Example 3

[0070] The difference between this comparative example and comparative example 1 is the calendering process in step (3). The calendering process is divided into three steps: the temperature of the first calendering is 180°C, the temperature of the second calendering is 170°C, and the temperature of the third calendering is 155°C. After the second calendering, the fabric is washed with water at a temperature of 90°C for 1 minute.

[0071] Comparative Example 4

[0072] The difference between this comparative example and comparative example 1 is the calendering process in step (3). The calendering process is divided into three steps: the temperature of the first calendering is 180°C, the temperature of the second calendering is 170°C, and the temperature of the third calendering is 155°C. After the second calendering, the fabric is not washed.

[0073] Comparative Example 5

[0074] The difference between this comparative example and Example 2 is the calendering process in step (3). The calendering process is divided into three steps: the temperature of the first calendering is 170°C, the temperature of the second calendering is 190°C, and the temperature of the third calendering is 155°C. After the second calendering, the fabric is washed with water at a temperature of 60°C for 1 minute.

[0075] Comparative Example 6

[0076] The difference between this comparative example and Example 2 is the calendering process in step (3). The calendering process is divided into three steps: the temperature of the first calendering is 180°C, the temperature of the second calendering is 170°C, the temperature of the third calendering is 155°C, and after the third calendering, the fabric is washed with water at a temperature of 60°C for 1 minute.

[0077] In addition, using fabrics without calendering as a control group, the fabric samples prepared in the control group, comparative examples 1-5, and example 2 were subjected to relevant performance tests, as follows.

[0078] (1) Fabric gloss: The experimental instrument was the M524 fabric gloss tester manufactured by Qingdao Shanfang Instrument Co., Ltd. Test method: The test was conducted using a fabric gloss meter according to the textile industry standard FZ / T 01097-2006, "Test Method for Fabric Gloss". Gloss was calculated based on the test results: the gloss of the fabric was calculated based on the measured intensity of reflected light and diffuse light, also known as contrast gloss. Wherein, GC represents fabric gloss; GS represents fabric positive reflected light intensity (%); and GR represents fabric diffuse reflected light intensity (%).

[0079] (2) Fabric softness test: The LLY-01 electronic fabric stiffness tester was used to determine the bending stiffness of the sample according to GB / T18318-2001. During the experiment, each sample was cut into 3 pieces of 2.5×25cm each in the longitudinal and transverse directions. The bending length of each group was recorded, and the bending stiffness G was calculated. The calculation formula is as follows: G=m×C 3 ×10 -3 Where: G - bending stiffness, mN·cm; m - mass per unit area of ​​the specimen, g / m² 2 c - average bending length of the specimen, cm.

[0080] The results are shown in Table 4.

[0081] Table 4. Results Statistics Table

[0082]

[0083] As can be seen from the results in Table 4, calendering has a certain effect on improving the gloss and softness of the fabric. However, the specific calendering process has different effects on the gloss and softness of the fabric. For example, Comparative Example 1 added a third calendering process compared to Comparative Example 2, and Comparative Example 1 adjusted the temperature of the calendering process three times compared to Comparative Example 5. From the data results, the gloss and softness values ​​of the fabric in Comparative Example 1 were improved. It can be seen that the number of calendering processes and the temperature of each calendering process have an impact on the gloss and softness of the fabric.

[0084] In addition, Comparative Example 1 was washed after the second calendering. Compared with Comparative Example 4, which was not washed after the second calendering, and Comparative Example 6, which was washed after the third calendering, the fabric had better luster and softness values. It can be seen that by adjusting the order of washing in the three calendering processes, the luster and softness of the fabric can also be affected.

[0085] Finally, when the fabrics obtained in Examples 1-3 were applied to the production of down jackets, the down jackets using the fabrics from Examples 1-3, with the same fill power, exhibited better down visibility and a stronger loft compared to down jackets made from ordinary fabrics. Furthermore, corresponding down leakage prevention and folding resistance tests were conducted. According to the national standard GB / T12705.2-2009 "Textiles - Test Method for Down Leakage Prevention Part 2: Rotating Box Method", fabrics with more than 15 down threads exhibit poor down leakage prevention; those with less than 15 exhibit good down leakage prevention; and those with less than 5 exhibit good down leakage prevention.

[0086] Test results show that the fabric of this invention has less than 5 hairs that can leak down, and has good down-proof properties. It can prevent down leakage without additional coating or film.

[0087] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. The application of a nylon fabric with a metallic sheen in the down jacket industry, the nylon fabric with a metallic sheen being woven from warp and weft yarns, characterized in that: The warp yarn is a triangular bright yarn, and the weft yarn is a composite colored yarn prepared by using EVA plastic as the sheath, polyamide as the core, and adding environmentally friendly color masterbatch. The fabric is woven using triangular bright yarn as warp and composite colored yarn as weft. The woven fabric is then calendered to obtain the nylon fabric with a metallic sheen. A method for preparing nylon fabric with a metallic sheen includes the following steps: (1) Weigh 70 parts of polyamide, 10 parts of bamboo charcoal powder, 10 parts of nano maifan stone powder, 5 parts of cottonseed oil and 5 parts of dispersant NNO according to the mass fraction and put them into a high-speed mixer and stir evenly to obtain a mixture. Add the mixture to a twin-screw extruder for compounding and extrusion, and after cooling, pelletizing and drying, environmentally friendly color masterbatch is obtained. (2) First, EVA plastic, polyamide and environmentally friendly masterbatch are dried separately. Then, EVA plastic and polyamide are fed into a screw extruder for melt extrusion. Environmentally friendly masterbatch is added when polyamide is melted. The mass ratio of EVA plastic, polyamide and environmentally friendly masterbatch is 40:40:

20. Then, composite colored yarn is obtained by spinning through a composite spinning equipment and finally by stretching and shaping. (3) Using triangular bright yarn as warp and composite colored yarn obtained in step (2) as weft, the fabric is woven. The diameter of the warp and weft is 20D, the warp weaving density is 120 / cm, the weft weaving density is 65 / cm, and the weaving structure is 2 / 1 twill. Finally, the woven fabric is calendered to obtain the nylon fabric with metallic sheen. The calendering is performed in three stages. The temperature of the first and second calendering is 190℃, the temperature of the third calendering is 150℃, and the fabric is washed after the second calendering at a temperature of 50℃ for 2 minutes. The fabric, in 20D specification and without coating, has a down thread count of <5 when tested according to GB / T 12705.2-2009.

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