Breathable wear-resistant twisted wire, health-care braided rope and application thereof

Abstract

The invention discloses a breathable wear-resistant twisted thread, a health-care braided rope and application thereof, and belongs to the technical field of textiles. The breathable wear-resistant twisted yarn comprises two kinds of fibers, and the two kinds of fibers are obtained by spinning the following components in parts by weight: fibers A: 60-100 parts of chinlon slices, 20-60 parts of polypropylene slices and 4-12 parts of chopped aramid fibers; the fiber B is prepared from the following components in parts by weight: 80 to 120 parts of chinlon chips, 4 to 8 parts of nano SiO2, 0.5 to 0.8 part of graphene oxide and 0.1 to 0.2 part of titanate coupling agent. The twisted yarn prepared from the two fibers with different properties has both strength and use hand feeling, good air permeability and moisture absorption performance are formed through the performance difference of the two fibers, a material with proper strength can be provided for early intervention of the carpal tunnel syndrome, the requirement for long-time use can be met, and the twisted yarn has good application prospects. The uncomfortable symptoms of the carpal tunnel syndrome are relieved.

Description

Technical Field

[0001] This application relates to a breathable and wear-resistant twisted yarn, a health-care braided rope, and their applications, belonging to the field of textile technology. Background Technology

[0002] Carpal tunnel syndrome is a peripheral nerve entrapment disease caused by compression of the median nerve within the carpal tunnel, leading to sensory and motor dysfunction in the hand. This type of disease is mainly caused by prolonged stress, repetitive labor, poor posture, heavy physical labor, and vibration in the workplace, resulting in injuries to the muscles, bones, and nervous system. The clinical manifestations are primarily sensory or motor disturbances in the median nerve region of the hand caused by prolonged repetitive or forceful work of the wrist, resulting in numbness and pain in the thumb, index, middle, and ring fingers. Some patients may experience forearm pain, and in severe cases, atrophy of the thenar muscles may occur, causing the thumb to be unable to perform corresponding functional impairments.

[0003] Early intervention for carpal tunnel syndrome is crucial for preventing disease progression and avoiding irreversible nerve damage. It can avoid surgical risks and alleviate disease progression, thereby preventing irreversible damage in later stages. Muscle relaxation and acupressure are effective means of early intervention for carpal tunnel syndrome. They can relieve wrist muscle tension, reduce soft tissue edema, and indirectly reduce median nerve compression, while also improving numbness and tingling in the hand. Chinese patent CN201510249697.0 discloses an inflatable wrist brace for preventing carpal tunnel syndrome, but this solution relies on electric control adjustment, making it unsuitable for daily use in various scenarios, and it also lacks the function of alleviating existing symptoms.

[0004] Therefore, there is still a lack of products that combine functionality and everyday applicability for early intervention of carpal tunnel syndrome. Summary of the Invention

[0005] To address the aforementioned issues, a breathable and abrasion-resistant twisted yarn and a health-promoting braided rope are provided. This solution improves the performance of the fibers constituting the twisted yarn, thereby enhancing the strength and durability of the twisted yarn and the braided rope, making it suitable for daily use and providing a suitable tool for the early intervention and relief of carpal tunnel syndrome.

[0006] According to one aspect of this application, a breathable and abrasion-resistant twisted yarn is provided, comprising two fibers, which, by weight, are obtained by spinning the following components:

[0007] Fiber A: 60-100 parts nylon chips, 20-60 parts polypropylene chips, and 4-12 parts chopped aramid fibers;

[0008] Fiber B: 80-120 parts nylon chips, 4-8 parts nano-SiO2, 0.5-0.8 parts graphene oxide, and 0.1-0.2 parts titanate coupling agent.

[0009] In this design, fiber A is modified by blending nylon with polypropylene and chopped aramid fibers, which increases the strength of fiber A and provides better support for the braided rope used as a massage and health care rope. In fiber B, nano-SiO2 and graphene oxide interweave to form a dense spatial structure and three-dimensional system. The nanopores formed by the two create a capillary structure. The polypropylene-modified nylon fiber in fiber A is hydrophobic and can quickly dissipate moisture. The capillary effect of the nanopores in fiber B and the hydrophobicity of the polypropylene-modified nylon fiber in fiber A create a moisture content difference between the surface and interior of the twisted yarn, which can quickly absorb and expel water or sweat from the surface of the twisted yarn or health care rope, improving the moisture absorption and breathability of the twisted yarn and the rope surface, and enhancing the daily user experience. On the other hand, the special composite structure formed between nano-SiO2 and graphene oxide enables the nylon fiber to have higher deformation properties, improving the abrasion resistance and feel of the twisted yarn and the rope.

[0010] Specifically, fiber B also includes 0.5 to 1 part maleic anhydride-grafted polyethylene.

[0011] Maleic anhydride-grafted polyethylene can react with the amino groups in nylon on the one hand, and form covalent bonds with graphene oxide on the other hand, providing good bonding between graphene oxide and nylon.

[0012] Specifically, fiber B also includes 10 to 15 parts of quaternized chitosan.

[0013] Chitosan possesses excellent hydrophilicity, rapidly binding with moisture on the fiber surface and transporting it through the capillary structure between nano-SiO2 and graphene oxide, forming a synergistic effect that further enhances the fiber's moisture absorption and breathability. Simultaneously, the introduction of quaternary ammonium groups provides excellent antibacterial properties, complementing nano-SiO2 and creating a synergistic antibacterial effect.

[0014] Specifically, the quaternized chitosan is hydroxypropyltrimethylammonium chloride chitosan.

[0015] Preferably, the twist of the twisted yarn is 25 to 40 twists per meter, and the twisted yarn contains at least 3 fibers A and at least 6 fibers B.

[0016] Specifically, fiber B is located on the outer periphery of fiber A, which not only provides high strength to the twisted yarn, but also provides a good hand feel and usability, ensuring the moisture absorption and elasticity of the twisted yarn.

[0017] Preferably, the twisted yarn is S-twist.

[0018] Preferably, the twisted yarn is Z-twist.

[0019] Preferably, the chopped aramid fibers are obtained by modification with a silane coupling agent.

[0020] The silanol group in the silane coupling agent condenses with the hydroxyl group on the surface of aramid, and the other end group chemically bonds with the carboxyl group (-COOH) or amino group (-NH2) of nylon, thereby forming a chemical bridge and enhancing the interfacial bonding performance between chopped aramid fibers and nylon.

[0021] Specifically, the modification method for chopped aramid fibers is as follows:

[0022] S1. Dissolve the silane coupling agent in an aqueous ethanol solution with a pH of 4-5 and a volume fraction of 75% to obtain an impregnation solution with a mass fraction of 1-2%.

[0023] S2. Disperse the short-cut aramid fibers in a 10% NaOH solution and treat them at 60°C for 30 minutes to obtain pretreated short-cut aramid fibers.

[0024] S3. After immersing the pretreated chopped aramid fibers in the impregnation solution for 20-30 minutes, dry them to obtain modified chopped aramid fibers.

[0025] Preferably, the silane coupling agent is obtained by reacting an aminosilane coupling agent with a diepoxy derivative.

[0026] Modifying chopped aramid fibers solely with aminosilane coupling agents can improve the interfacial bonding between chopped aramid fibers and nylon, but the chopped aramid fibers are prone to aggregation. The reaction between diepoxy derivatives and aminosilane coupling agents involves the grafting of one end epoxy group of the diepoxy derivative with aminosilane molecules, and the ring-opening reaction of the other end epoxy group with the amino group of nylon to form ether bonds, improving the bonding performance between aramid and nylon. It also includes the formation of bridges between the two aminosilane molecules, forming a cross-linked network structure, thereby improving the water resistance and strength of fiber A. At the same time, by grafting diepoxy derivatives with aminosilane coupling agents, the molecular chains of the coupling agents are lengthened to form a certain spatial structure, which can improve the dispersibility of chopped aramid fibers.

[0027] Specifically, the aminosilane coupling agent is one of γ-aminopropyltriethoxysilane, butyldimethyl(dimethylamino)silane, 3-aminopropylmethyldimethoxysilane, and 3-aminopropylmethylsilane.

[0028] Preferably, the diepoxide derivative is one of 2,2'-[1,4-phenylenebis(oxymethylene)]diepoxide, 2,2'-[[1,1'-binaphthyl]-2,2'-dimethylbis(methylene)]diepoxide, and 2,2'-methylenebis(phenyleneoxymethylene)diepoxide.

[0029] The introduction of bicyclic epoxy derivatives containing benzene ring structures can further improve the strength of fiber A, while also improving the corrosion resistance of fiber A and extending the service life of twisted yarns and braided ropes.

[0030] According to another aspect of this application, a health care braided rope is provided, which is woven from the above-described breathable and abrasion-resistant twisted yarn.

[0031] Preferably, the braided rope comprises at least three strands of twisted yarn.

[0032] Preferably, the knot of the braided rope includes one of the following: lark's head knot, one-way square knot, four-strand braid, and eight-strand braid.

[0033] According to another aspect of this application, the above-described health braided rope is provided for use in the early intervention of carpal tunnel syndrome.

[0034] The beneficial effects of this application include, but are not limited to:

[0035] 1. The breathable and wear-resistant twisted yarn of this application uses nylon as the base material of the fiber, which has good wear resistance. By blending and modifying the nylon, fiber A and fiber B are obtained, so that the twisted yarn has both high strength and high breathability, thereby improving the massage effect, user experience and service life of the braided rope made from the twisted yarn.

[0036] 2. According to the breathable and wear-resistant twisted yarn of this application, adding a certain proportion of polypropylene and modified chopped aramid fiber to fiber A not only improves the hydrophobicity and mechanical strength of fiber A, but also improves the corrosion resistance of the fiber by introducing aromatic groups, thus extending the service life of the twisted yarn and braided rope.

[0037] 3. According to the breathable and wear-resistant twisted yarn of this application, a certain proportion of nano-silica, graphene oxide and quaternized chitosan are added to fiber B, so that fiber B covering the outer periphery of the twisted yarn has excellent moisture absorption, breathability and antibacterial properties, and is suitable for long-term contact with the human body. Attached Figure Description

[0038] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0039] Figure 1This is a schematic diagram of the fiber arrangement involved in Embodiment 1 of this application.

[0040] Figure 2 This is a schematic diagram of the fiber arrangement involved in Embodiment 2 of this application. Detailed Implementation

[0041] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of skill in the art. The reagents and raw materials used in this invention are readily available through conventional means, and unless otherwise specified, they shall be used in accordance with conventional methods in the art or as per the product instructions. Furthermore, any methods and materials similar to or equivalent to those described herein may be applied to the methods of this invention. The preferred embodiments and materials described in this patent are for illustrative purposes only.

[0043] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0044] The following embodiments and comparative examples were all implemented according to the following methods:

[0045] 1) Weigh the raw materials according to the weight parts, co-blend and granulate them in a twin-screw extruder, melt spin them at a speed of 1100 m / min and dry them to obtain fiber A and fiber B;

[0046] 2) Select several fibers A and B, twist them, and stretch them in a balanced manner to obtain a breathable and wear-resistant twisted yarn.

[0047] The modification method for chopped aramid fibers is as follows:

[0048] S1. Dissolve the silane coupling agent in an aqueous ethanol solution with a pH of 4 and a volume fraction of 75% to obtain an impregnation solution with a mass fraction of 2%.

[0049] S2. Disperse the short-cut aramid fibers in a 10% NaOH solution and treat them at 60°C for 30 minutes to obtain pretreated short-cut aramid fibers.

[0050] S3. The pretreated chopped aramid fibers are immersed in the impregnation solution for 25 minutes and then dried to obtain modified chopped aramid fibers.

[0051] Example 1

[0052] The two fibers in the twisted yarn are obtained by spinning the following components:

[0053] Fiber A: 100 parts nylon chips, 60 parts polypropylene chips, and 12 parts chopped aramid fibers;

[0054] Fiber B: 120 parts of nylon chips, 8 parts of nano-SiO2, 0.8 parts of graphene oxide, and 0.2 parts of titanate coupling agent were used to prepare breathable and wear-resistant twisted yarn #1.

[0055] The short-cut aramid fibers are modified by impregnation with 3-aminopropylmethylsilane after reacting with 2,2'-[1,4-phenylenebis(oxymethylene)]bis(ethylene oxide); the twist of fiber A is 30 twists / meter, and the twist of fiber B is 40 twists / meter; the twisted yarn consists of 6 fibers A and 10 fibers B, with fiber A in a Z-twist direction and fiber B in an S-twist direction. The arrangement of fibers A and B is such that fiber B covers the outer periphery of fiber A, as detailed in [see details]. Figure 1 .

[0056] Example 2

[0057] The two fibers in the twisted yarn are obtained by spinning the following components:

[0058] Fiber A: 60 parts nylon chips, 20 parts polypropylene chips, and 4 parts chopped aramid fibers;

[0059] Fiber B: 80 parts of nylon chips, 4 parts of nano-SiO2, 0.5 parts of graphene oxide, and 0.1 parts of titanate coupling agent were used to prepare breathable and wear-resistant twisted yarn #2.

[0060] The short-cut aramid fibers are modified by impregnation with butyl dimethyl (dimethylamino)silane crosslinked with 2,2'-[[1,1'-binaphthyl]-2,2'-dimethylbis(methylene)]bis(ethylene oxide); the twist of fiber A is 25 twists / meter, and the twist of fiber B is 30 twists / meter; the twisted yarn consists of 3 fibers A and 7 fibers B, with fiber A in an S-direction and fiber B in a Z-direction, and the arrangement of fibers A and B is alternating, as detailed in [see details]. Figure 2 .

[0061] Example 3

[0062] The two fibers in the twisted yarn are obtained by spinning the following components:

[0063] Fiber A: 80 parts nylon chips, 40 parts polypropylene chips, and 7 parts chopped aramid fibers;

[0064] Fiber B: 100 parts nylon chips, 7 parts nano SiO2, 0.7 parts graphene oxide, and 0.2 parts titanate coupling agent were used to prepare breathable and wear-resistant twisted yarn #3.

[0065] Among them, the short-cut aramid fibers are modified by impregnation with γ-aminopropyltriethoxysilane crosslinked with 2,2'-methylenebis(phenyloxymethylene)bisoxyethylene ether; the twist of fiber A and fiber B is 40 twists / meter; the twisted yarn is composed of 6 fibers A and 10 fibers B, and both fibers A and B are half Z twist and half S twist, and the arrangement of fibers A and B is that fiber B covers the outer periphery of fiber A.

[0066] Example 4

[0067] The difference from Example 3 is that fiber B also includes 0.5 parts of maleic anhydride-grafted polyethylene to prepare breathable and wear-resistant twisted yarn #4.

[0068] Example 5

[0069] The difference from Example 3 is that fiber B also includes 1 part of maleic anhydride-grafted polyethylene, which is used to prepare breathable and wear-resistant twisted yarn #5.

[0070] Example 6

[0071] The difference from Example 3 is that fiber B also includes 10 parts of quaternized chitosan, and air-permeable and wear-resistant twisted yarn 6# is prepared.

[0072] Example 7

[0073] The difference from Example 3 is that fiber B also includes 15 parts of quaternized chitosan, and air-permeable and wear-resistant twisted yarn 7# is prepared.

[0074] Example 8

[0075] The difference from Example 3 is that fiber B also includes 0.7 parts maleic anhydride-grafted polyethylene and 13 parts quaternized chitosan, to prepare breathable and wear-resistant twisted yarn #8.

[0076] Example 9

[0077] The difference from Example 3 is that the chopped aramid fibers in fiber A are modified by impregnation with γ-aminopropyltriethoxysilane to prepare breathable and wear-resistant twisted yarn #9.

[0078] Example 10

[0079] The difference from Example 3 is that the chopped aramid fibers in fiber A are modified by impregnation with γ-aminopropyltriethoxysilane crosslinked with 1,5-dicyclohexane to prepare breathable and wear-resistant twisted yarn 10#.

[0080] Example 11

[0081] The difference from Example 3 is that the twist of both fiber A and fiber B is 10 twists / meter, and the breathable and wear-resistant twisted yarn 11# is prepared.

[0082] Example 12

[0083] The difference from Example 3 is that the fiber A and fiber B are arranged such that 6 fibers B are placed in the center, and the remaining fibers B and fiber A cover the outer periphery of the fiber B in the center, thus preparing the breathable and wear-resistant twisted yarn 12#.

[0084] Comparative Example 1

[0085] The difference from Example 3 is that the polypropylene chips in fiber A are replaced with an equal amount of nylon chips to prepare breathable and wear-resistant twisted yarn D1#.

[0086] Comparative Example 2

[0087] The difference from Example 3 is that the chopped aramid fibers in fiber A are replaced with an equal amount of glass fibers to prepare breathable and wear-resistant twisted yarn D2#.

[0088] Comparative Example 3

[0089] The difference from Example 3 is that 12 parts of nano-SiO2 were added to prepare breathable and wear-resistant twisted yarn D3#.

[0090] Comparative Example 4

[0091] The difference from Example 3 is that the number of chopped aramid fibers is 20 parts, and the breathable and wear-resistant twisted yarn D4# is prepared.

[0092] Comparative Example 5

[0093] The difference from Example 3 is that the amount of graphene oxide added is 2 parts, and the breathable and wear-resistant twisted yarn D5# is prepared.

[0094] Experimental Example 1

[0095] The breathable and abrasion-resistant twisted yarns obtained in Examples 1-12 and Comparative Examples 1-5 were tested for moisture absorption according to the method described in standard GB / T21655.1-2008; and their antibacterial activity against Escherichia coli and Staphylococcus aureus was determined according to the method described in standard GB / T 20944.3-2008.

[0096] The breathable and wear-resistant twisted yarns obtained in Examples 1-12 and Comparative Examples 1-5 were braided into an eight-strand braided health care rope in bundles of three strands each. The tensile properties of the rope were tested, including tensile properties before and after impact. The impact operation of the rope was as follows: a composite rope core with a length of 10±0.2m and a diameter of 5±0.2mm was subjected to a falling hammer impact, in which a certain mass of weight was dropped from a certain height to impact the rope core. After the impact operation was completed, a tensile breaking test of the rope was performed. The test results are shown in Table 1.

[0097] Table 1

[0098]

[0099] Experiment Example 2: Sensory Evaluation

[0100] Eighty-five participants were recruited and randomly divided into 17 groups. Each group wore an eight-strand braided health rope made of twisted yarn obtained in Examples 1-12 and Comparative Examples 1-5 for a 30-day follow-up period. After the 30-day period, user experience and effectiveness were evaluated, with scores given for comfort and relief of wrist discomfort. The average score was used. The subjective comfort scale is shown in Table 2, the subjective wrist discomfort relief scale is shown in Table 3, and the overall evaluation results are shown in Table 4.

[0101] All participants had spent long hours working on computers and exhibited early symptoms of carpal tunnel syndrome.

[0102] Table 2 Subjective Comfort Evaluation Scale

[0103]

[0104] Table 3 Subjective evaluation scale for relieving wrist discomfort

[0105]

[0106] Table 4. Overall Evaluation Results

[0107]

[0108]

[0109] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0110] The above description is merely an embodiment of this application, and the scope of protection of this application is not limited to these specific embodiments, but is determined by the claims of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the technical concept and principles of this application should be included within the scope of protection of this application.

Claims

1. A breathable and abrasion-resistant twisted yarn, characterized in that, It contains two types of fibers, which, by weight, are obtained by spinning the following components respectively: Fiber A: 60-100 parts nylon chips, 20-60 parts polypropylene chips, and 4-12 parts chopped aramid fibers; Fiber B: 80-120 parts nylon chips, 4-8 parts nano-SiO2, 0.5-0.8 parts graphene oxide, and 0.1-0.2 parts titanate coupling agent.

2. The breathable and abrasion-resistant twisted yarn according to claim 1, characterized in that, The twist of the yarn is 25 to 40 twists per meter, and the yarn contains at least 3 fibers A and at least 6 fibers B.

3. The breathable and abrasion-resistant twisted yarn according to claim 1, characterized in that, The twisted yarn is S-twist and / or Z-twist.

4. The breathable and abrasion-resistant twisted yarn according to claim 1, characterized in that, The chopped aramid fibers were obtained by modification with a silane coupling agent.

5. The breathable and abrasion-resistant twisted yarn according to claim 4, characterized in that, The silane coupling agent is obtained by reacting an aminosilane coupling agent with a diepoxy derivative.

6. The breathable and abrasion-resistant twisted yarn according to claim 4, characterized in that, The diepoxide derivative is one of 2,2'-[1,4-phenylenebis(oxymethylene)]diepoxide, 2,2'-[[1,1'-binaphthyl]-2,2'-dimethylbis(methylene)]diepoxide, and 2,2'-methylenebis(phenyleneoxymethylene)diepoxide.

7. A health-care braided rope, characterized in that, The health care braided rope is made from the breathable and wear-resistant twisted yarn described in claims 1 to 6.

8. The health care braided rope according to claim 7, characterized in that, The braided rope contains at least 3 strands of twisted yarn.

9. The health care braided rope according to claim 8, characterized in that, The knots in the braided rope include one of the following: lark's head knot, one-way square knot, four-strand braid, and eight-strand braid.

10. The application of a health-care braided rope as described in claims 7-9 in the early intervention of carpal tunnel syndrome.

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