Traceless antistatic fabric and preparation method thereof
By using double-sided jacquard weaving of antistatic yarn and composite functional yarn and ultrasonic welding technology, combined with jacquard air layer and skin-friendly layer, the problems of single function, insufficient durability and poor comfort of traditional antistatic fabrics are solved, and a high-performance, durable and seamless antistatic fabric is achieved.
Patent Information
- Application Number
- CN202511871965.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional antistatic fabrics have limited functionality, insufficient durability, complex manufacturing processes, poor comfort, and difficulty in maintaining stable performance in dynamic environments.
The double-sided jacquard structure is created by weaving antistatic yarn and composite functional yarn through a double-sided jacquard process. It combines a jacquard air layer and a skin-friendly layer, and uses ultrasonic welding technology to achieve seamless splicing. Polydopamine-encapsulated silver nanoparticles are added to improve conductivity and antistatic properties.
It achieves long-lasting antistatic properties, strong environmental adaptability, and good comfort with a seamless antistatic fabric, possessing excellent static discharge capability and good durability.
Smart Images
Figure CN121700528A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of textile fabric preparation, in particular to a traceless antistatic fabric and a preparation method thereof. BACKGROUND
[0002] Antistatic fabrics play a key role in electronic manufacturing, medical protection, and flammable and explosive operation environments, and can effectively prevent equipment damage or safety accidents caused by static discharge. However, traditional antistatic fabrics have significant limitations: first, the functional singleness is prominent, and most fabrics only rely on small molecule antistatic agents to achieve basic charge dissipation, lacking intelligent response ability to environmental factors (such as temperature and humidity), resulting in limited application scenarios. Second, the core defect is insufficient durability, and small molecule antistatic agents are prone to migration or loss, and the antistatic performance is significantly degraded after multiple washes, making it difficult to meet long-term use requirements. In addition, the process complexity problem is prominent, and some preparation methods require multiple dipping, baking and other post-processing steps, which not only increase energy consumption, but also affect production efficiency and fabric consistency. In terms of comfort, traditional fabrics often cause a decrease in air permeability or a stiff touch due to the addition of conductive materials, affecting the wearing experience, especially in dynamic operation environments.
[0003] Existing technologies attempt to improve performance through composite structures or functional expansion, such as sewing an antistatic layer with ordinary fabric to reduce costs, but such designs still have the problem of uneven distribution of antistatic areas, and the sewing process may introduce friction points, which in turn accumulate static electricity. Another direction is to introduce antibacterial function, achieving synergistic protection through silver nanoparticles or titanium dioxide coating, but this technology may further weaken the elasticity and washability of the fabric. In addition, the traceless process can improve comfort, but traditional seamless splicing technology is difficult to deeply combine with antistatic function, resulting in performance fluctuations in the fabric during dynamic stretching. These limitations highlight the need for new traceless antistatic fabrics, which require breakthroughs in material innovation, structural design and process optimization to balance long-term antistatic, environmental adaptability and traceless comfort.
[0004] In view of this, we disclose a traceless antistatic fabric and a preparation method thereof. SUMMARY
[0005] In view of the deficiencies of the prior art, the present application aims to provide a traceless antistatic fabric and a preparation method thereof.
[0006] To achieve the above-mentioned purpose, the present application proposes the following technical solutions:
[0007] The application discloses a mark-free antistatic fabric, which is knitted into a double jacquard structure by using antistatic yarn and composite functional yarn through a double jacquard process.
[0008] As a preferred solution of the above solution, the double jacquard structure is a multi-color air layer jacquard structure.
[0009] As a preferred solution of the above solution, the jacquard air layer is knitted by selecting needles according to a pattern requirement, and at least two groups of yarns are knitted on the front and back needle beds and are knitted in an interlaced mode, the selection of the needles is complementary, the yarns are interwoven at the pattern edges, and the yarns are not interwoven at the pattern areas to present a hollow effect.
[0010] As a preferred solution of the above solution, the antistatic yarn is one of antistatic acrylic yarn, antistatic wool yarn or stainless steel composite yarn.
[0011] As a preferred solution of the above solution, the antistatic yarn is stainless steel composite yarn, and the stainless steel composite yarn is composed of stainless steel wire and cotton in a ratio of (2-3):(7-8).
[0012] As a preferred solution of the above solution, the yarn density of the antistatic yarn is 21S-30S.
[0013] As a preferred solution of the above solution, the composite functional yarn is composed of antibacterial polyester yarn and natural fiber wool and cashmere yarn in an equal proportion.
[0014] As a preferred solution of the above solution, the antibacterial polyester yarn comprises the following components in parts by weight: PET polyester chip 53-69 parts, maleic anhydride compatibility agent 16-20 parts, polydopamine-coated silver nanoparticle 4-25 parts, nano-silver antibacterial agent 4-5 parts and dispersing agent 1-2 parts.
[0015] As a preferred solution of the above solution, a mark-free antistatic fabric is prepared by using a multi-needle double circular weft knitting machine or a double needle bed computerized flat knitting machine or a four needle bed computerized flat knitting machine.
[0016] Compared with the prior art, the technical solution of the application has the following beneficial effects:
[0017] The application discloses a traceless antistatic fabric and a preparation method thereof, the traceless antistatic fabric is woven into a double jacquard structure by using double jacquard technology with antistatic yarn and composite functional yarn, and a skin-friendly layer, a jacquard air layer and an antistatic layer are sequentially arranged by means of the jacquard structure; and the ultrasonic welding technology is used for splicing and fixing at the joint, so that the effect of the traceless fabric is achieved. The polydopamine coated silver nanoparticle material added in the traceless antistatic fabric also has conductivity, can effectively discharge static electricity, and has excellent antistatic performance in combination with the antistatic yarn. It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered part of the subject disclosure as long as such concepts are not mutually contradictory.
[0018] The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description. Additional aspects, embodiments and features of the present teachings will be apparent from the description that follows, or will be learned through practice of the present teachings. BRIEF DESCRIPTION OF DRAWINGS
[0019] The above and / or additional aspects and advantages of the present application will become apparent and be more readily understood from the following description, taken in conjunction with the accompanying drawings, in which:
[0020] Figure 1 The fabric structure diagram of the present application is shown in the figure.
[0021] Figure 2 The needle arrangement diagram of the fabric of the present application is shown in the figure.
[0022] Wherein, 101, the antistatic layer; 102, the jacquard air layer; 103, the skin-friendly layer. DETAILED DESCRIPTION
[0023] In order to make the skilled in the art better understand the technical solutions of the present application, the preferred embodiments of the present application are described below in combination with specific embodiments, but it should not be understood as limiting the present patent.
[0024] The test methods or test methods described in the following examples / Comparative Examples are all conventional methods unless otherwise specified, and the reagents and materials are all obtained from conventional commercial channels or prepared by conventional methods unless otherwise specified.
[0025] In the present application, the fabric is prepared by using a multi-needle double-sided circular weft knitting machine or a double-needle bed computerized flat knitting machine or a four-needle bed computerized flat knitting machine. Preferably, the present application selects anti-static yarn and composite functional yarn for knitting, and uses a multi-needle double-sided circular weft knitting machine to prepare by using upper and lower tumbler needles, and the jacquard structure adopts 6-way knitting structure as one cycle, and the specific structure is as follows:
[0026] 1st way:
[0027] Upper tumbler needle: loop, loop, loop, float, float, float, loop, loop, loop, loop, float, float;
[0028] Lower tumbler needle: float, float, float, float, loop, loop, loop, loop, loop, loop, float;
[0029] 2nd way:
[0030] Upper tumbler needle: float, float, float, tuck, tuck, tuck, float, float, float, float, tuck, tuck;
[0031] Lower tumbler needle: tuck, float, tuck, float, float, float, tuck, float, tuck, float, float, float;
[0032] 3rd way:
[0033] Upper tumbler needle: float, float, float, float, float, float, float, float, float, float, float, float;
[0034] Lower tumbler needle: float, loop, float, loop, float, loop, float, loop, float, loop, float, loop;
[0035] 4th way:
[0036] Upper tumbler needle: loop, float, float, float, float, float, float, loop, loop, loop, float, float;
[0037] Lower tumbler needle: float, float, float, loop, float, loop, float, loop, float, float, float, loop;
[0038] 5th way:
[0039] Upper tumbler needle: float, float, tuck, tuck, tuck, tuck, tuck, float, float, float, tuck, tuck;
[0040] Lower tumbler needle: float, tuck, float, float, float, float, float, tuck, float, tuck, float, float;
[0041] 6th way:
[0042] Upper knitting needle: float, float, float, float, float, float, float, float, float, float, float, float, float;
[0043] Lower knitting needle: loop, float, loop, float, loop, float, loop, float, loop, float, loop, float.
[0044] From the knitting sequence from bottom to top, in the 1st path, the antistatic yarn and the composite functional yarn are in turn threaded into the needle arrangement in the Figure 2 , and the needles are selected for knitting, forming the 1st path yarn structure. Then, in the 4th, 5th, 6th, 11th, 12th needles of the upper knitting needle of the 2nd path, the needles are selected for knitting; in the 1st, 3rd, 7th, 9th needles of the lower knitting needle, the needles are selected for knitting, and the yarn is knitted with 1-in-1 selection on the reverse side of the fabric.
[0045] In the 3rd path, the lower knitting needle 2, 4, 6, 8, 10, 12 needles are knitted with 1-in-1, staggered with the upper knitting needle, and the composite functional yarn is knitted on the reverse side. From the 1st path to the 3rd path, the color of the antistatic yarn is revealed on the front of the fabric, and the composite functional yarn is knitted on the reverse side of the fabric. Due to the proportion of 1-in-1 knitting of the composite functional yarn, the color of the composite functional yarn is revealed on the reverse side of the fabric, which is soft and has hydrophilic properties, especially in dry winter. Similarly, in the 6th path knitting structure, the needles are knitted with 1-in-1, and after the pattern is knitted, the appearance of the antistatic layer is flat, the fabric structure is tight, and the skin-friendly layer of the fabric is soft and warm.
[0046] Finally, after forming the three-dimensional structure of the antistatic layer, the air layer of the jacquard, and the skin-friendly layer, the seams are welded with ultrasonic welding technology to achieve the effect of no trace fabric.
[0047] Furthermore, the preparation of the polydopamine-coated silver nanoparticles of the present application includes two processes of nanoparticle dispersion and polydopamine coating, and the specific steps are as follows:
[0048] 1. Nanoparticle dispersion
[0049] First, prepare a 0.1-0.25M silver nitrate solution, and prepare the same concentration of ammonia solution and graphene oxide solution, and mix the ammonia solution and graphene oxide solution in equal volumes to obtain a mixed solution. Then, use a dropping funnel to add the silver nitrate solution to the mixed solution, and after the addition is complete, place it in a reaction kettle and hydrothermally reduce it at 120℃ for 2-3h. After cooling to room temperature, wash with ethanol 3-5 times to obtain a solid sample, and then vacuum dry the solid sample at 40℃ for 12h to obtain silver nanoparticle-loaded graphene.
[0050] 2. Polydopamine-coated
[0051] Dopamine hydrochloride and tris(hydroxymethyl)aminomethane hydrochloride buffer solution with a substance amount ratio of 4:9 are mixed, and the pH is 7.5-8.0; then silver nanoparticles loaded graphene is ultrasonically dispersed in ultrapure water in an amount equal to that of dopamine hydrochloride to prepare a uniform dispersion liquid with a concentration of 0.25-0.85 M; then the dopamine hydrochloride solution is added dropwise into the silver nanoparticle loaded graphene dispersion liquid within 5-15 min, and stirred at room temperature for 7 h. Finally, the product is centrifuged, and the solid is washed twice with anhydrous ethanol and ultrapure water, respectively, and vacuum dried at 40°C for 12 h to obtain 20 mg of polydopamine-coated silver nanoparticles.
[0052] The polydopamine-coated silver nanoparticles used in the application first utilize the hydrothermal reduction of graphene oxide aqueous solution to form silver single atoms, and the large specific surface area and abundant functional groups of graphene oxide can prevent the agglomeration of silver single atoms on the surface during the formation of silver single atoms. Secondly, graphene oxide is also reduced to graphene during the hydrothermal reaction, further enhancing the stability of silver nanoparticles on the surface of graphene. In the second step, the silver nanoparticle loaded graphene used in the formation and coating of polydopamine has a synergistic hydrophilic effect with polydopamine, which can reduce the agglomeration between electrons and thus improve the antistatic performance; secondly, the phenolic hydroxyl and (sub) amine groups contained in polydopamine complex with silver nanoparticles with chemical antibacterial activity, which can form stable and efficient antibacterial efficacy.
[0053] Further, the PET polyester chip brand is CR 8816, which is selected from Dongguan Jinhua New Material Co., Ltd.; the maleic anhydride compatibilizer is selected from Nanjing Feiteng New Material Technology; the nano-silver antibacterial agent is SG-8612, which is selected from Suzhou Guojin Textile Technology Co., Ltd.; and the dispersing agent is sodium dodecyl sulfonate.
[0054] Example 1
[0055] A mark-free antistatic fabric, the fabric is woven into a double jacquard structure by using double jacquard process with antistatic yarn and composite functional yarn; the jacquard structure includes an antistatic layer and a skin-friendly layer from the outside to the inside, and a jacquard air layer for storing air is formed between the antistatic layer and the skin-friendly layer; the antistatic layer is woven by antistatic yarn, and the skin-friendly layer is woven by composite functional yarn.
[0056] Further, the jacquard structure is a multi-color air layer jacquard structure. Preferably, it is a double-color air layer jacquard structure.
[0057] Further, the jacquard air layer is a fabric that is selected and knitted according to a pattern, and at least two groups of yarns are interlaced and knitted on the front and back needle beds, and the yarns are complementary to each other, and the yarns are interlaced at the pattern edge, and the yarns are not interlaced in the pattern area to present a hollow effect.
[0058] Further, the antistatic yarn is one of an antistatic acrylic yarn, an antistatic wool yarn, or a stainless steel filament composite yarn.
[0059] Further, the antistatic yarn is a stainless steel filament composite yarn, and the stainless steel filament composite yarn is composed of a stainless steel filament and a cotton filament at a ratio of 2:8.
[0060] Further, the antistatic yarn has a yarn density of 21S.
[0061] Further, the composite functional yarn is twisted and twisted by an antibacterial polyester yarn and a natural fiber wool or cashmere yarn.
[0062] Further, the antibacterial polyester yarn comprises the following components: PET polyester chips 53 parts, maleic anhydride compatibilizer 16 parts, polydopamine-coated silver nanoparticles 25 parts, nano-silver antibacterial agent 4.5 parts, and dispersant 1.5 parts.
[0063] Further, a method for preparing a mark-free antistatic fabric, the fabric is prepared by a multi-needle double-sided circular weft knitting machine or a double-needle bed computerized flat knitting machine or a four-needle bed computerized flat knitting machine.
[0064] Example 2
[0065] Different from the above-mentioned example 1, and the stainless steel filament composite yarn is composed of a stainless steel filament and a cotton filament at a ratio of 3:7. Further, the antistatic yarn has a yarn density of 30S.
[0066] Other operations are the same as example 1.
[0067] Example 3
[0068] Different from the above-mentioned example 1, the antibacterial polyester yarn comprises the following components: PET polyester chips 69 parts, maleic anhydride compatibilizer 20 parts, polydopamine-coated silver nanoparticles 6 parts, nano-silver antibacterial agent 4 parts, and dispersant 1 part.
[0069] Other operations are the same as example 1.
[0070] Comparative example 1
[0071] Different from the above-mentioned example 1, the antistatic yarn is a stainless steel filament.
[0072] Other operations are the same as example 1.
[0073] Comparative example 2
[0074] Different from example 1, the antistatic yarn is cotton filament.
[0075] Other steps are the same as example 1.
[0076] Comparative example 3
[0077] Different from example 1, the composite functional yarn is not antibacterial polyester yarn.
[0078] Other steps are the same as example 1.
[0079] Comparative example 4
[0080] Different from example 1, the composite functional yarn is only antibacterial polyester yarn, and the antibacterial polyester yarn component does not contain polydopamine coated silver nanoparticles.
[0081] Other steps are the same as example 1.
[0082] Comparative example 5
[0083] Different from example 1, the composite functional yarn is only antibacterial polyester yarn, and the antibacterial polyester yarn component does not contain nano-silver antibacterial agent.
[0084] Other steps are the same as example 1.
[0085] Comparative example 6
[0086] Different from example 1, the double jacquard process is not used for knitting, and the antistatic yarn and the composite functional yarn are directly knitted in warp and weft, so no jacquard air layer is formed.
[0087] Other steps are the same as example 1.
[0088] Performance test
[0089] Fabric thickness
[0090] YG(B)141D digital fabric thickness tester is used for testing, and the test standard refers to GB / T3820-1997 "Determination of thickness of textiles and textile products". The average value is taken.
[0091] Scratch resistance
[0092] Durability includes wear resistance and cut resistance. The wear resistance test uses a Martindale instrument to obtain the total number of fabric wear resistance, and the average value is taken.
[0093] Secondly, the cut resistance test uses a TDM100 cut resistance tester to record the cycle period T and calculate the cut resistance index. The larger the cut resistance index of the fabric, the better the cut resistance performance.
[0094] Thermal performance
[0095] The thermal performance test adopts YG606 thermal resistance and moisture resistance tester, and the test standard refers to GB / T 11048-2008 “Textiles-Physiological Comfort- Determination of thermal and moisture resistance under steady-state conditions”. The results are averaged.
[0096] Antistatic property
[0097] One of the antistatic properties of the fabric is the surface resistivity. The test method for surface resistivity refers to the standard GB / T 12703.1-2021 “Textiles-Electrostatic properties-Test methods-Part 1: Corona charging method”. The results are averaged.
[0098] The second reference for the antistatic property of the fabric is the static voltage half-life period. The test method is to detect the sample according to the standard GB / T12703.1-2008 “Textiles-Electrostatic properties-Evaluation Part 1: Static voltage half-life period”, and record the static voltage half-life period of the sample.
[0099] Antibacterial property
[0100] The antibacterial property of the textile is tested according to the standard GB / T 31713-2015 “Safety and hygiene requirements for antibacterial textiles”. It mainly involves the antibacterial rate of Escherichia coli and Staphylococcus aureus. The results are averaged.
[0101] The textile fabric of the above specific embodiments 1-3 and comparative examples 1-6 is tested for performance. The test results are shown in Table 1 below.
[0102] Table 1 Analysis of fabric performance test results
[0103] Through the total number of abrasion resistance and cutting resistance index performance test, we can observe that in comparative example 2, the absence of stainless steel wire leads to a lower overall scratch resistance of the fabric. For antistatic performance, stainless steel wire also has obvious benefits, and the static dissipation effect of stainless steel wire is better than the anti-static accumulation effect of natural fibers, which is specifically shown in the antistatic performance of the fabric of comparative example 1 is better than that of comparative example 2. In addition, the composite functional yarn has synergistic benefits for antistatic property, such as in comparative examples 3 to 5, the absence of polydopamine-coated silver nanoparticles in comparative example 4, its antistatic performance is weaker than that of comparative example 5. However, although polydopamine-coated silver nanoparticles have an effect on antistatic performance, its antistatic effect is still weaker than the anti-static accumulation effect of natural fibers (comparative example 3), and thus the antistatic performance of the fabric of comparative examples 3 to 5 is weaker than that of comparative example 6.
[0104] For the antibacterial performance, the polydopamine coated silver nanoparticles and the nanosilver antibacterial agent in the fabric mainly play a role, and the nanosilver antibacterial agent has the advantages of obvious less use amount and high efficiency. For the heat preservation performance, the double jacquard process weaving into the double jacquard structure has a greater influence on the heat preservation performance, and other factors have little influence on the heat preservation of the fabric.
[0105] It should be further explained that the traceless antistatic fabric of the present application is woven into a double jacquard structure by using double jacquard process with antistatic yarn and composite functional yarn;And with the help of the jacquard structure, a skin-friendly layer, a jacquard air layer and an antistatic layer are formed in sequence;Then the ultrasonic welding technology is used for splicing and fixing at the joint to achieve the effect of traceless fabric. The polydopamine coated silver nanoparticle material added in the traceless antistatic fabric of the present application also has conductivity, which can effectively discharge static electricity, and the combination with the antistatic yarn, so the antistatic performance is excellent.
[0106] Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the definition of the claims.
Claims
1. A seamless antistatic fabric, characterized in that, include: The fabric is woven from antistatic yarn and composite functional yarn using a double-sided jacquard process to form a double-sided jacquard structure. The jacquard structure includes an antistatic layer (101) and a skin-friendly layer (103) from the outside to the inside, and a jacquard air layer (102) for storing air is formed between the antistatic layer and the skin-friendly layer. The antistatic layer (101) is woven from antistatic yarn, and the skin-friendly layer (103) is woven from composite functional yarn.
2. The seamless antistatic fabric according to claim 1, characterized in that, The jacquard weave structure is a multi-color air-layer jacquard weave structure.
3. The seamless antistatic fabric according to claim 1, characterized in that, The jacquard air layer (102) is made by selecting needles to weave the fabric according to the pattern requirements. At least two sets of yarns are interwoven on the front and back needle beds, and the needle selection is complementary. The yarns interweave at the edge of the pattern, and the yarns do not interweave in the pattern area to present a hollow effect.
4. The seamless antistatic fabric according to claim 1, characterized in that, The antistatic yarn is one of antistatic acrylic yarn, antistatic wool yarn, or stainless steel wire composite yarn.
5. The seamless antistatic fabric according to claim 4, characterized in that, The antistatic yarn is a stainless steel wire composite yarn, which is made of stainless steel wire and cotton wire in a ratio of (2-3):(7-8).
6. The seamless antistatic fabric according to claim 5, characterized in that, The antistatic yarn has a yarn count of 21S-30S.
7. The seamless antistatic fabric according to claim 1, characterized in that, The composite functional yarn is made by twisting together antibacterial polyester yarn and natural fiber wool and cashmere yarn.
8. The seamless antistatic fabric according to claim 7, characterized in that, The antibacterial polyester yarn comprises the following components by weight: 53-69 parts PET polyester chips, 16-20 parts maleic anhydride compatibilizer, 4-25 parts polydopamine-coated silver nanoparticles, 4-5 parts nano silver antibacterial agent, and 1-2 parts dispersant.
9. A method for preparing a seamless antistatic fabric according to any one of claims 1-8, characterized in that, The fabric is prepared using a multi-needle double-sided circular weft knitting machine, a double-needle bed computerized flat knitting machine, or a four-needle bed computerized flat knitting machine.