Cold-proof and warm-keeping fabric for power maintenance and application thereof
Patent Information
- Application Number
- CN202610742024.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-27
- Publication Date
- 2026-08-21
AI Technical Summary
针对现有技术中电力检修用防寒保暖面料为满足性能要求需牺牲服用性而进行多次改性的问题，本发明提供一种通过一次简单改性便可同时获得多种性能的面料，本发明在聚合物树脂纤维的基础上，通过简单复合添加同时具有抗寒和防护的多功能填料，实现户外低温作业服以防寒为主的防护性、工效性和舒适性的多功能集合，最大程度地提高作业效率，提升舒适感，具体来说，所述的功能填料是以基于聚对苯撑苯并二恶唑纳米纤维的气凝胶为基底，通过复合银单质修饰的二维MXene纳米片得到，聚对苯撑苯并二恶唑纳米纤维是一种高性能的芳香族聚酰胺纤维，其通过五元环和六元环的精密排列形成刚性聚合物结构，具有优良的力学性能、耐温性和化学稳定性，可以提高纤维和面料的机械强度和稳定性，聚对苯撑苯并二恶唑纳米纤维先以强酸进行质子化获得分散液，再经去质子化得到凝胶，同时在凝胶中引入改性的纳米片，所述纳米片以刻蚀剥离后的二维MXene为原料，通过还原处理在表面引入还原位点，银离子与其表面的还原位点进行氧化还原反应以修饰单质银，所述凝胶经溶剂置换后获得气凝胶，基于其超高的气体含量，可以为面料提供良好的热量隔绝层，减少热量耗散而实现防寒保暖，另一方面，气凝胶中引入的纳米片上修饰的银单质可以反射人体红外线热辐射能量，进一步降低热量辐射，同时二维MXene纳米片与修饰的单质银还可以提高纤维的导电性能，进而在电力检修时形成屏蔽层将人体与高压电场有效隔离。
Smart Images
Figure SMS_1
Abstract
Description
Technical Field
[0001] This invention relates to the field of special fiber fabric preparation technology, and in particular to a cold-proof and warm fabric for power maintenance and its application. Background Technology
[0002] Clothing serves as a barrier for the human body to resist harsh external climates. In cold environments, the human body relies mainly on clothing to reduce heat loss, thereby minimizing or preventing harm caused by low temperatures and improving the work efficiency of outdoor workers. Therefore, the quality of clothing's cold-weather protection and insulation performance directly affects the physiological functions of the human body. In complex and variable low-temperature working environments, considering the activity level of the wearer, providing clothing with good cold-weather protection and insulation performance is an important way to ensure the safety of workers and enable them to work efficiently.
[0003] The application of outdoor low-temperature workwear extends beyond occupations involving outdoor work in cold conditions to other fields, such as sportswear for cold environments, including polar suits, mountaineering suits, ski suits, and diving suits. Under similar cold conditions, the principles and methods of cold protection for workwear and sportswear are largely similar. However, outdoor work is influenced by the nature and characteristics of the profession, involving many occupational hazards. For example, in high-risk fields such as power maintenance, workers not only face cold climates but also need to consider specific protective measures.
[0004] For power maintenance work in cold environments, clothing needs to be designed not only for warmth but also for electrostatic protection under high voltage conditions. For cold protection, existing technologies mainly improve the warmth by inhibiting heat transfer within the human body and promoting heat generation in clothing. This is usually achieved by adding additives to the fabric. For high voltage protection, composite fibers or coatings are typically used. This requires multiple doping or composite treatments of the fabric to achieve the corresponding protective effects. This greatly reduces the proportion of fabric fibers in the clothing and requires sacrificing the fabric's wearability to meet its various performance requirements. Summary of the Invention
[0005] The purpose of this invention is to provide a cold-proof and warm fabric for power maintenance and its application, in order to solve the problems existing in the prior art. It provides a fabric that can obtain multiple properties through a simple modification. By adding multifunctional fillers that have both cold resistance and protection, it achieves a multifunctional combination of protection, efficiency and comfort for outdoor low-temperature work clothes, with cold protection as the main feature, thereby maximizing work efficiency, improving comfort, and balancing the relationship between various performance aspects of the clothing.
[0006] The objective of this invention is achieved through the following technical solution: This invention provides a cold-proof and warm-insulating fabric for power maintenance. The fabric includes cold-proof and warm-insulating fibers, which in turn include polymer resin and functional fillers. The functional fillers are prepared by the following steps: S1, Preparation of Modifying Materials Two-dimensional MXene nanosheets were dispersed in an alcoholic solution of glutaraldehyde, and sodium cyanoborohydride solution was added. The mixture was stirred for 10-12 h, and solid-liquid separation was performed. The precipitate was washed, dried, and then ultrasonically dispersed in water to obtain a dispersed colloidal solution. A water-soluble silver salt solution was then added, and the mixture was stirred at 20-80 °C for 0.5-4 h. Solid-liquid separation was performed, and the precipitate was washed and dried to obtain the modified material. S2, Preparation of Functional Fillers A mixed aqueous solution of methanesulfonic acid and ethyl acetate and the modified material were added to the poly(p-phenylenebenzodioxazole) nanosol. After thorough mixing, the mixture was allowed to stand for aging for 48-72 hours. The aging product was exchanged with an alcohol-water mixed solvent. After solvent exchange, the product was freeze-dried, crushed, and then subjected to heat treatment under a protective atmosphere. After cooling, the product was crushed and ground again to obtain the functional filler.
[0007] Furthermore, the mass ratio of the polymer resin to the functional filler in the cold-proof and heat-insulating fiber is (1-35):100.
[0008] Furthermore, the polymer resin is polyester, polyamide, polyacrylonitrile, or polypropylene.
[0009] Further, in step S1, the concentration of the glutaraldehyde alcohol solution is 3-10 wt%, the liquid-to-solid ratio of the two-dimensional MXene nanosheets to the glutaraldehyde alcohol solution is 1:(5-50) g / mL, the concentration of the sodium cyanoborohydride solution is 0.01-0.5 wt%, and the volume ratio of the glutaraldehyde alcohol solution to the sodium cyanoborohydride solution is 1:(0.2-1).
[0010] Further, the concentration of the dispersed colloidal solution is 0.01-0.2 g / mL, the concentration of the water-soluble silver salt solution is 0.1-5 g / L, and the volume ratio of the dispersed colloidal solution to the water-soluble silver salt solution is 1:(0.4-1).
[0011] Furthermore, the preparation method of the poly(p-phenylenebenzodioxazole) nanosol in step S2 is to add poly(p-phenylenebenzodioxazole) fibers to methanesulfonic acid, seal the reaction system and stir the reaction for 48-72 hours, and then disperse it by ultrasonication to obtain the nanosol.
[0012] Furthermore, the mass ratio of the poly(p-phenylenebenzodioxazole) fiber to the methanesulfonic acid is (0.1-2):100.
[0013] Further, in step S2, the mass ratio of the poly(p-phenylenebenzodioxazole) nanosol to the mixed aqueous solution and the modifying material is 1:(0.8-1.3):(0.05-0.18).
[0014] Furthermore, the solvent exchange in step S2 is performed 5-20 times, and the time for each exchange is 2-5 hours.
[0015] Furthermore, the heat treatment temperature is 380-580℃, and the heat treatment time is 0.5-2h.
[0016] Furthermore, the present invention also provides an application of the aforementioned cold-proof and warm-keeping fabric in power maintenance clothing.
[0017] Furthermore, the fabric can also be obtained by blending the cold-proof and warm-insulating fibers with other conductive fibers into yarn and then weaving it, such as stainless steel fiber.
[0018] Furthermore, the fabric can also be used in combination with other fabrics, such as a comfortable inner layer fabric, or an outer layer fabric that is wear-resistant, flame-retardant, or insulating.
[0019] The present invention discloses the following technical effects: To address the problem that existing cold-weather fabrics for power maintenance require multiple modifications to meet performance requirements while sacrificing wearability, this invention provides a fabric that achieves multiple properties through a single, simple modification. Based on polymer resin fibers, this invention adds a multifunctional filler with both cold-resistant and protective properties through simple composite addition. This achieves a multifunctional combination of protection, efficiency, and comfort in outdoor low-temperature workwear, primarily focusing on cold protection, maximizing work efficiency and enhancing comfort. Specifically, the functional filler is based on aerogel made from poly(p-phenylene benzodioxazole) nanofibers, modified with silver to form two-dimensional MXene nanosheets. Poly(p-phenylene benzodioxazole) nanofibers are high-performance aromatic polyamide fibers that form a rigid polymer structure through the precise arrangement of five- and six-membered rings, exhibiting excellent mechanical properties, temperature resistance, and chemical stability. To improve the mechanical strength and stability of fibers and fabrics, poly(p-phenylene benzodioxazole) nanofibers are first protonated with a strong acid to obtain a dispersion, and then deprotonated to obtain a gel. Simultaneously, modified nanosheets are introduced into the gel. These nanosheets are made from etched and exfoliated two-dimensional MXene, and reduction sites are introduced on the surface through reduction treatment. Silver ions undergo redox reactions with these reduction sites to modify elemental silver. The gel is then solvent-displaced to obtain an aerogel. Due to its extremely high gas content, it can provide a good thermal insulation layer for fabrics, reducing heat dissipation and achieving cold protection and warmth. On the other hand, the elemental silver modified on the nanosheets introduced into the aerogel can reflect infrared thermal radiation energy from the human body, further reducing heat radiation. Simultaneously, the two-dimensional MXene nanosheets and modified elemental silver can also improve the conductivity of the fibers, thus forming a shielding layer during power maintenance to effectively isolate the human body from high-voltage electric fields. Detailed Implementation
[0020] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as a limitation of the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.
[0021] It should be understood that the terminology used in this invention is merely for describing particular embodiments and is not intended to limit the invention. Furthermore, with respect to numerical ranges in this invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Every smaller range between any stated value or intermediate value within a stated range, and any other stated value or intermediate value within said range, is also included in this invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.
[0022] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. While only preferred methods and materials have been described herein, any methods and materials similar or equivalent to those described herein may be used in the implementation or testing of this invention. All references to this specification are incorporated by way of citation to disclose and describe methods and / or materials associated with those references. In the event of any conflict with any incorporated reference, the content of this specification shall prevail.
[0023] Various modifications and variations can be made to the specific embodiments described in this specification without departing from the scope or spirit of the invention, as will be apparent to those skilled in the art. Other embodiments derived from this specification will also be apparent to those skilled in the art. This specification and embodiments are merely exemplary.
[0024] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.
[0025] To more clearly demonstrate the performance of the fabric described in this invention, the fabric in this embodiment is woven only with the cold-proof and warm-keeping fibers and does not contain other fibers or fabrics. The fabric specifications are 200 stitches in the warp and 142 stitches in the weft (10cm).
[0026] Example 1 This invention relates to a cold-proof and warm fabric for power maintenance. The fabric is woven from cold-proof and warm fibers, which include polyester chips and functional fillers. The mass ratio of the polyester chips to the functional fillers is 22:100. To enhance the dispersibility of the functional fillers in the resin, 0.6 wt% of polyethylene glycol ester is added to the fibers as a dispersant. The functional filler is prepared by the following steps: S1, Preparation of Modifying Materials Two-dimensional MXene nanosheets Ti3C2T x An ethanol solution of glutaraldehyde was added, and sodium cyanoborohydride solution was added. The mixture was stirred for 10 hours, and the solid and liquid were separated. The precipitate was washed, dried, and then ultrasonically dispersed in water to obtain a dispersed colloidal solution. Silver nitrate solution was then added, and the mixture was stirred at 50°C for 1 hour. The solid and liquid were separated, and the precipitate was washed and dried to obtain the modified material. The concentration of the glutaraldehyde ethanol solution is 6 wt%, and the two-dimensional MXene nanosheets Ti3C2T xThe liquid-to-solid ratio of the glutaraldehyde ethanol solution is 1:25 g / mL, the concentration of the sodium cyanoborohydride solution is 0.2 wt%, and the volume ratio of the glutaraldehyde ethanol solution to the sodium cyanoborohydride solution is 1:1; the concentration of the dispersion colloidal solution is 0.12 g / mL, the concentration of the silver nitrate solution is 1 g / L, and the volume ratio of the dispersion colloidal solution to the silver nitrate solution is 1:0.8. S2, Preparation of Functional Fillers A mixed aqueous solution of methanesulfonic acid and ethyl acetate and the modified material were added to the poly(p-phenylenebenzodioxazole) nanosol. After thorough mixing, the mixture was allowed to stand for 72 hours for aging. The aging product was exchanged with a mixed solvent of tert-butanol / water (v / v=1:1). After solvent exchange, the product was freeze-dried, crushed, and then subjected to heat treatment under a protective atmosphere. After cooling, the product was crushed and ground again to obtain the functional filler. The preparation method of the poly(p-phenylene benzodioxazole) nanosol is as follows: poly(p-phenylene benzodioxazole) fibers are added to methanesulfonic acid, the reaction system is sealed and stirred for 60 h, and then ultrasonically dispersed to obtain the nanosol; wherein the mass ratio of the poly(p-phenylene benzodioxazole) fibers to the methanesulfonic acid is 1.2:100. In the mixed aqueous solution of methanesulfonic acid and ethyl acetate, the mass ratio of methanesulfonic acid to ethyl acetate and water is 2:1:1; the mass ratio of poly(p-phenylenebenzodioxazole) nanosol to the mixed aqueous solution and the modifying material is 1:1:0.1; the number of solvent exchanges is 20, and the single exchange time is 4 hours; the heat treatment temperature is 450°C, and the heat treatment time is 0.5 hours.
[0027] Example 2 This invention relates to a cold-proof and warm fabric for power maintenance. The fabric is woven from cold-proof and warm fibers, which include polyester chips and functional fillers. The mass ratio of the polyester chips to the functional fillers is 22:100. To enhance the dispersibility of the functional fillers in the resin, 0.6 wt% of polyethylene glycol ester is added to the fibers as a dispersant. The functional filler is prepared by the following steps: S1, Preparation of Modifying Materials Two-dimensional MXene nanosheets Ti3C2T x The modified material was prepared by adding sodium cyanoborohydride solution to an ethanol solution of glutaraldehyde, stirring for 10 h, separating the solid and liquid phases, and washing and drying the precipitate. The concentration of the glutaraldehyde ethanol solution is 6 wt%, and the two-dimensional MXene nanosheets Ti3C2T xThe liquid-to-solid ratio of the glutaraldehyde ethanol solution is 1:25 g / mL, the concentration of the sodium cyanoborohydride solution is 0.2 wt%, and the volume ratio of the glutaraldehyde ethanol solution to the sodium cyanoborohydride solution is 1:1. S2, Preparation of Functional Fillers Step S2 is the same as in Example 1.
[0028] Example 3 This invention relates to a cold-proof and warm fabric for power maintenance. The fabric is woven from cold-proof and warm fibers, which include polyester chips and functional fillers. The mass ratio of the polyester chips to the functional fillers is 22:100. To enhance the dispersibility of the functional fillers in the resin, 0.6 wt% of polyethylene glycol ester is added to the fibers as a dispersant. The functional filler is prepared by the following steps: A mixed aqueous solution of methanesulfonic acid and ethyl acetate was added to the nanosol of poly(p-phenylenebenzodioxazole). After thorough mixing, the mixture was allowed to stand for 72 hours for aging. The aging product was exchanged with a mixed solvent of tert-butanol / water (v / v=1:1). After solvent exchange, the product was freeze-dried, crushed, and then subjected to heat treatment under a protective atmosphere. After cooling, the product was crushed and ground again to obtain the functional filler. The preparation method of the poly(p-phenylene benzodioxazole) nanosol is as follows: poly(p-phenylene benzodioxazole) fibers are added to methanesulfonic acid, the reaction system is sealed and stirred for 60 h, and then ultrasonically dispersed to obtain the nanosol; wherein the mass ratio of the poly(p-phenylene benzodioxazole) fibers to the methanesulfonic acid is 1.2:100. The mass ratio of methanesulfonic acid to ethyl acetate and water in the mixed aqueous solution of methanesulfonic acid and ethyl acetate is 2:1:1; the mass ratio of poly(p-phenylenebenzodioxazole) nanosol to the mixed aqueous solution is 1:1; the number of solvent exchanges is 20, and the single exchange time is 4 hours; the heat treatment temperature is 450°C, and the heat treatment time is 0.5 hours.
[0029] Example 4 This invention relates to a cold-proof and warm fabric for power maintenance. The fabric is woven from cold-proof and warm fibers, which include polyester chips and functional fillers. The mass ratio of the polyester chips to the functional fillers is 22:100. To enhance the dispersibility of the functional fillers in the resin, 0.6 wt% of polyethylene glycol ester is added to the fibers as a dispersant. The functional filler is prepared by the following steps: S1, Preparation of Modifying Materials Two-dimensional MXene nanosheets Ti3C2T xThe mixture was dispersed in water to obtain a colloidal solution. Silver nitrate solution was then added, and the mixture was stirred at 50°C for 1 hour. Solid-liquid separation was performed, and the precipitate was washed and dried to obtain the modified material. The concentration of the dispersed colloidal solution is 0.12 g / mL, the concentration of the silver nitrate solution is 1 g / L, and the volume ratio of the dispersed colloidal solution to the silver nitrate solution is 1:0.8. S2, Preparation of Functional Fillers Step S2 is the same as in Example 1.
[0030] Comparative Example 1 A polyester fabric woven from polyester fibers, wherein 0.6 wt% of polyethylene glycol ester is added to the polyester fibers as a dispersant.
[0031] Comparative Example 2 A high-voltage electrostatic protective fabric is woven from polyester fiber and stainless steel fiber in a mass ratio of 7:3.
[0032] The properties of the fabrics prepared in Examples 1-4 and Comparative Examples 1-2 are shown in Table 1.
[0033] Table 1 Performance test results of the fabrics prepared in Examples 1-4 and Comparative Examples 1-2
[0034] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims
1. A cold-proof and warm-insulating fabric for power maintenance, comprising cold-proof and warm-insulating fibers, characterized in that, The cold-proof and heat-insulating fiber comprises a polymer resin and a functional filler, wherein the functional filler is prepared by the following steps: S1, Preparation of Modifying Materials Two-dimensional MXene nanosheets were dispersed in an alcoholic solution of glutaraldehyde, and sodium cyanoborohydride solution was added. The mixture was stirred for 10-12 h, and solid-liquid separation was performed. The precipitate was washed, dried, and then ultrasonically dispersed in water to obtain a dispersed colloidal solution. A water-soluble silver salt solution was then added, and the mixture was stirred at 20-80 °C for 0.5-4 h. Solid-liquid separation was performed, and the precipitate was washed and dried to obtain the modified material. S2, Preparation of Functional Fillers A mixed aqueous solution of methanesulfonic acid and ethyl acetate and the modified material were added to the poly(p-phenylenebenzodioxazole) nanosol. After thorough mixing, the mixture was allowed to stand for aging for 48-72 hours. The aging product was exchanged with an alcohol-water mixed solvent. After solvent exchange, the product was freeze-dried, crushed, and then subjected to heat treatment under a protective atmosphere. After cooling, the product was crushed and ground again to obtain the functional filler.
2. The cold-proof and warm-insulating fabric for power maintenance according to claim 1, characterized in that, The mass ratio of the polymer resin to the functional filler in the cold-proof and heat-insulating fiber is (1-35):
100.
3. The cold-proof and warm-insulating fabric for power maintenance according to claim 1, characterized in that, In step S1, the concentration of the glutaraldehyde alcohol solution is 3-10 wt%, the liquid-to-solid ratio of the two-dimensional MXene nanosheets to the glutaraldehyde alcohol solution is 1:(5-50) g / mL, the concentration of the sodium cyanoborohydride solution is 0.01-0.5 wt%, and the volume ratio of the glutaraldehyde alcohol solution to the sodium cyanoborohydride solution is 1:(0.2-1).
4. The cold-proof and warm-insulating fabric for power maintenance according to claim 1, characterized in that, The concentration of the dispersed colloidal solution is 0.01-0.2 g / mL, the concentration of the water-soluble silver salt solution is 0.1-5 g / L, and the volume ratio of the dispersed colloidal solution to the water-soluble silver salt solution is 1:(0.4-1).
5. The cold-proof and warm-insulating fabric for power maintenance according to claim 1, characterized in that, The preparation method of the poly(p-phenylenebenzodioxazole) nanosol in step S2 is as follows: add poly(p-phenylenebenzodioxazole) fibers to methanesulfonic acid, seal the reaction system and stir for 48-72 hours, and then disperse by ultrasonication to obtain the nanosol.
6. The cold-proof and warm-insulating fabric for power maintenance according to claim 5, characterized in that, The mass ratio of the poly(p-phenylenebenzodioxazole) fiber to the methanesulfonic acid is (0.1-2):
100.
7. The cold-proof and warm-insulating fabric for power maintenance according to claim 1, characterized in that, In step S2, the mass ratio of the poly(p-phenylenebenzodioxazole) nanosol to the mixed aqueous solution and the modifying material is 1:(0.8-1.3):(0.05-0.18).
8. The cold-proof and warm-insulating fabric for power maintenance according to claim 1, characterized in that, The solvent exchange in step S2 is performed 5-20 times, and the time for each exchange is 2-5 hours.
9. The cold-proof and warm-keeping fabric for power maintenance according to claim 1, characterized in that, The heat treatment temperature is 380-580℃, and the heat treatment time is 0.5-2h.
10. The application of the fabric according to any one of claims 1-9 in power maintenance clothing.