Contact thermal fabric and weaving process

Abstract

The present invention provides a contact thermal fabric, comprising a surface layer, a connecting layer, a functional yarn layer and a protective layer which are sequentially connected from top to bottom, wherein the surface layer is a honeycomb structure woven from composite yarns formed by mixed fibers, and the connecting layer is composed of primary yarns and secondary yarns with different wire diameters which are arranged in an arc-shaped cross-distribution to connect the surface layer and the functional yarn layer, wherein the functional yarn layer is woven from modified yarns, and the modified yarns are composed of 1%-5% graphene modified masterbatch, 1%-5% calcium carbonate energy powder modified masterbatch and the remainder of base masterbatch, which are mixed and twisted in a certain proportion, wherein the protective layer is a structural layer which mainly plays a protective role and is formed by cross-linking epoxy resin glue on the surface of the functional yarn layer, and the fabric of the present invention has good air permeability, antibacterial and mite removal, and far-infrared heating and warmth retention properties.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, and in particular to a contact thermal-sensitive fabric and a weaving process. Background Art

[0002] Fabrics are used to make clothing and shoe uppers. As one of the three elements of clothing and shoe uppers, fabrics can not only interpret the style and characteristics of clothing and shoe uppers, but also directly influence the color and shape of clothing and shoe uppers. Knitted fabrics use knitting needles to form yarn or filaments into coils, and then string the coils together. Due to the coil structure characteristics of knitted fabrics, there is a large amount of yarn stored per unit length, so most of them have good elasticity. Knitted fabrics are divided into single-sided and double-sided. The main ones are sweat cloth, velvet, bird's eye cloth, mesh cloth, etc. The existing fabrics have poor thermal insulation stability. Materials that have been sprayed with modified ingredients, such as materials containing graphene, improve performance, reduce their breathability, and do not have multifunctional characteristics. Summary of the invention

[0003] In order to solve the above technical problems, as a first aspect of the present invention, a contact thermal fabric is proposed, comprising a surface layer, a connecting layer, a functional yarn layer and a protective layer connected in sequence from top to bottom, wherein the surface layer is a honeycomb structure woven from composite yarns formed by mixed fibers, and the connecting layer is composed of primary yarns and secondary yarns with different wire diameters arranged in an arc-shaped cross distribution to connect the surface layer and the functional yarn layer.

[0004] The functional yarn layer is made of modified yarn woven from 1%-5% graphene modified masterbatch, 1-5% calcium carbonate energy powder modified masterbatch and the rest base masterbatch, which are mixed evenly in a certain proportion and then spun.

[0005] The protective layer is a structural layer formed by cross-linking epoxy resin on the surface of the functional yarn layer and plays a major protective role.

[0006] The graphene-modified masterbatch is formed by modifying the base masterbatch with 5%-20% of graphene.

[0007] Among them, the calcium carbonate energy powder modified masterbatch is formed by modifying the base masterbatch with 10%-25% calcium carbonate energy powder, and the base masterbatch includes at least one of polyester masterbatch, TPU masterbatch and nylon masterbatch. The preparation method of the calcium carbonate energy powder is: the calcium carbonate powder and the base masterbatch are fed into a nano grinder for grinding, the grinding speed is 1200-1400r / min, the grinding time is 10-15min, and the particle size is <200nm, and the powder is fed into a dispersant and stirred and dispersed for 20-30min, the dispersion speed is 1200-1500r / min, and the dispersion is completed and dried to obtain calcium carbonate energy powder.

[0008] Furthermore, the composite yarn is blended by nano titanium dioxide catalyst antibacterial fiber and cuprammonia fiber.

[0009] Furthermore, the epoxy resin glue is formed by mixing epoxy resin, polyetheramine and benzyl alcohol, the mass fraction of the epoxy resin is 15-18%, the mass fraction of the polyetheramine is 10-17%, and the balance is anisole.

[0010] Furthermore, the method for drawing the modified yarn of the functional yarn layer is to mix the graphene modified masterbatch, the calcium carbonate energy powder modified masterbatch and the base masterbatch in a certain proportion and then draw the yarn, control the supply of the drawing metering pump to 700-850g / min, and the drawing temperature to 290°C.

[0011] Furthermore, the modified yarn of the functional yarn layer is twisted after spinning.

[0012] Compared with the prior art, the beneficial effects of the present invention are embodied in:

[0013] 1 The graphene contact thermal fabric of the present invention has the yarn of the connecting layer arranged vertically at X-90°, breaking through the traditional 0° support of loose fibers. It adopts the design of double-sided mesh in the upper and lower layers, presenting six-sided breathable and hollow three-dimensional structure. Air and water molecules can flow freely to form a humid and hot microcirculation air layer, which is dry and comfortable.

[0014] 2 The graphene contact thermal fabric of the present invention has good antibacterial and mite removal effects, and the functional yarn layer of the fabric has good far-infrared performance. The functional yarn layer and the long-wave calcium carbonate can emit and reflect 4-16um far-infrared waves under the human body heat source. The human body is a good far-infrared absorber and infrared emitter, and its absorption band is mainly 4-16um, thereby achieving continuous back-and-forth frequency resonance between the fabric and the human body heat source, thereby playing a role in heating, warming and keeping out the cold for the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a fabric structure according to an exemplary embodiment of the present invention;

[0016] Figure 2 is a schematic diagram of a surface layer structure according to an exemplary embodiment of the present invention;

[0017] Figure 3 is a schematic diagram of the underlying structure according to an exemplary embodiment of the present invention;

[0018] Figure 4 is a flow chart of a fabric production process according to an exemplary embodiment of the present invention;

[0019] Figure 5A product model diagram of graphene of a graphene-modified masterbatch used for preparing a functional yarn layer according to an exemplary embodiment of the present invention;

[0020] Figure 6 It is a schematic diagram of the particle size analysis of calcium carbonate of the calcium carbonate energy powder modified masterbatch used in preparing the functional yarn layer according to an exemplary embodiment of the present invention.

[0021] Surface layer-1, connecting layer-2, functional yarn layer-3, protective layer-4. DETAILED DESCRIPTION

[0022] The present invention will be further described below through exemplary embodiments and drawings.

[0023] Example 1

[0024] like Figure 1-6 As shown, this exemplary embodiment proposes a contact thermal fabric, including a surface layer 1, a connecting layer 2, a functional yarn layer 3 and a protective layer 4 connected in sequence from top to bottom, the surface layer 1 is made of a composite yarn blended with nano-titanium dioxide catalyst antibacterial fiber and cuprammonia fiber to form a honeycomb structure, the connecting layer 2 is composed of primary yarns and secondary yarns with different wire diameters arranged in an arc-shaped cross distribution to connect the surface layer 1 and the functional yarn layer 3, the yarn of the connecting layer 2 is polyester monofilament, the functional yarn layer 3 is woven from modified yarns, and the modified yarn is twisted after drawing graphene modified masterbatch, calcium carbonate energy powder modified masterbatch and base masterbatch, and the protective layer 4 is a main protective structural layer formed by cross-linking epoxy resin glue on the surface of the functional yarn layer.

[0025] The epoxy resin glue of this exemplary embodiment is mixed with 15% epoxy resin, 15% polyetheramine and 70% benzyl alcohol.

[0026] In this exemplary embodiment, the functional yarn layer includes 1% graphene modified masterbatch, 2% calcium carbonate energy powder modified masterbatch and 97% nylon masterbatch (pure base masterbatch). The fabric formed by the raw materials of this exemplary embodiment is suitable for the production of ready-made garments.

[0027] The preparation method of the graphene modified masterbatch according to the exemplary embodiment includes mixing 5%-20% of graphene with a substrate to modify the substrate, and the modification method can adopt any modification method. For example: A preparation method of the graphene modified masterbatch is to add graphene powder, substrate masterbatch and dispersant aqueous wax into a disperser, disperse for 2 hours, and then place in a mixer for internal mixing, and finally extrude and granulate through a twin-screw extruder to obtain the graphene modified masterbatch.

[0028] The preparation method of the modified masterbatch of calcium carbonate energy powder according to the exemplary embodiment includes mixing 10%-25% of graphene with a substrate to modify the substrate masterbatch, and the modification method can adopt any modification method. For example, the preparation method of the modified masterbatch of calcium carbonate energy powder is: the calcium carbonate powder and the substrate masterbatch are fed into a nano grinder for grinding, the grinding speed is 1300r / min, the grinding time is 10min, and the particle size is <200nm, most of which is mainly <100nm, and then fed into a sodium dodecyl sulfate solution with a mass fraction of 15% and stirred and dispersed for 30min, the dispersion speed is 1200-1500r / min, and the dispersion is completed, and spray drying is performed to obtain the modified masterbatch of calcium carbonate energy powder.

[0029] Furthermore, the method for drawing the functional yarn layer is to evenly mix the graphene modified masterbatch, the calcium carbonate energy powder modified masterbatch and the polyester masterbatch and then draw the yarn, control the supply of the drawing metering pump to 700-850g / min, the drawing temperature to 290°C, the spinning speed to 800m / min, and the drawing multiple to 2.7 times to obtain the mixed yarn of the functional yarn layer.

[0030] As a second aspect of the present invention, a production process of the contact thermal sensitive fabric as described above is provided, comprising the following steps:

[0031] (1) Material preparation: Select the weaving material according to the process requirements of the 3D fabric;

[0032] (2) Machine preparation: Prepare a double-sided warp knitting machine with six guide bars and thread the yarn;

[0033] (3) Weaving process: Weaving is carried out according to the weaving process, where:

[0034] The comb bar GB1 is threaded in a 3-spaced-1-threaded manner and knitted on the front needle bed. Its lapping structure is (10 / 23)*3 / (45 / 32)*3 / / , and its warp let-off is 1780mm / lacquer.

[0035] The comb bar GB2 is threaded in a 3-spaced-1-threaded manner and knitted on the front needle bed. Its lapping structure is (45 / 32)*3 / (10 / 23)*3 / / , and its warp let-off is 1780mm / lacquer.

[0036] The two comb bars GB1 and GB2 are woven with 100D blended yarn to form a continuous hexagonal mesh structure, which is manifested in the form of a honeycomb mesh on the surface layer.

[0037] The comb bar GB3 is threaded in a 1-spaced-1-threaded manner and knitted on the front and rear needle beds. Its lapping structure is 0110 / 1001 / / , and its warp let-off is 8000mm / lacquer.

[0038] The comb bar GB4 is threaded in a 1-spaced-1-threaded manner and knitted on the front and rear needle beds. Its lapping structure is 1021 / 2312 / / , and its warp let-off is 8000mm / lacquer.

[0039] The two comb bars GB3 and GB4 are woven with 15D polyester monofilament to form an arc-shaped cross distribution of the connecting layer.

[0040] The comb bar GB5 is threaded in a full threading mode and knitted on the rear needle bed, and its lapping structure is 2243 / 2201 / / , and its warp let-off is 2820mm / lac.

[0041] The comb bar GB6 is threaded in a full threading mode and knitted on the rear needle bed, the lapping structure is 0001 / 1110 / / , and the warp let-off is 1470 mm / lac.

[0042] The comb bars GB5 and GB6 are respectively threaded with 100D modified mixed yarn to weave the functional yarn layer, thereby forming continuous strip units with different strip structures;

[0043] (4) Shaping process: The rough product after warp knitting is inspected. After passing the inspection, it needs to be soaked and disinfected. After soaking and disinfection, the product with epoxy resin glue coated on the functional yarn layer is sent to the shaping machine for shaping and drying, and then the shaped rough product is inspected.

[0044] Example 2

[0045] The functional yarn layer of this embodiment includes 1% graphene modified masterbatch, 2% calcium carbonate energy powder modified masterbatch and 96% polyester masterbatch. The fabric made in this embodiment can be used in the production of ready-made clothes.

[0046] Example 3

[0047] The functional yarn layer of this embodiment includes 1% graphene modified masterbatch, 3% calcium carbonate energy powder modified masterbatch and 94% TPU masterbatch. The fabric made in this embodiment can be used for the production of shoe uppers.

[0048] Comparative Example 1

[0049] The materials and preparation process are basically the same as those in Example 1, except that the functional yarn layer according to the embodiment of the present invention is not used. Specifically, no graphene-modified masterbatch is added during yarn drawing.

[0050] Comparative Example 2.

[0051] The materials and preparation process are basically the same as those in Example 1, except that the functional yarn layer according to the embodiment of the present invention is not used. Specifically, no calcium carbonate energy powder modified masterbatch is added during yarn drawing.

[0052] The fabrics formed in this embodiment and the comparative example were tested using the GB / T30706-2014 standard to test the sterilization rate of the product, and the test results were averaged; the far-infrared performance of the product was tested using the GB / T 30127-2013 standard, and the test results were averaged.

[0053]

[0054] From Examples 1-3 and Comparative Examples 1-2, it can be clearly seen that in the functional fabrics formed by spinning with the modified masterbatch according to the embodiments of the present invention in the exemplary embodiments 1-3 of the present invention, the fabrics have the best properties. Specifically, the sterilization rate and far-infrared emissivity of the fabrics according to the exemplary embodiments of the present invention are the highest, and the antibacterial performance and far-infrared performance are the best.

[0055] Accelerated testing

[0056] The fabric was washed 20 times and tested for antibacterial and far infrared properties.

[0057]

[0058] It can be concluded that exemplary embodiments 1-3 according to the present invention still have good far-infrared performance after multiple washings.

[0059] The graphene contact thermal fabric of exemplary embodiments 1-3 of the present invention has good antibacterial and mite removal effects, and the inhibition rate of mites can reach 74%, and the bactericidal rate of Staphylococcus aureus (%) (≥80%), and the functional yarn layer of the fabric has good far-infrared performance. This is because in the fine yarn formed by the calcium carbonate energy powder modified masterbatch in the functional yarn layer, the long wave of calcium carbonate can emit and reflect 4-16um far-infrared waves under the heat source of the human body, and the human body is a good far-infrared absorber and infrared emitter, and its absorption band is mainly 4-16um, thereby realizing the constant frequency resonance between the fabric and the human body heat source. At the same time, graphene is a good hollow conductive medium. With the cooperation of the two, the fabric plays a role in heating, keeping warm and keeping out the cold for the human body.

[0060] More specifically, the yarn formed by the masterbatch modified by calcium carbonate energy powder and graphene can provide specific waves to form a frequency resonance with the human body temperature, and continuously conduct back and forth, while producing an amplified resonance effect. Through this phenomenon, heat is generated by continuously emitting and reflecting the same frequency resonance waves back and forth, thereby making the human body feel the effect of heating and warmth.

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A contact thermal fabric, characterized in that: The invention comprises a surface layer, a connection layer, a functional yarn layer and a protective layer connected in sequence from top to bottom. The surface layer is a honeycomb structure woven from composite yarns formed by mixed fibers. The connection layer is composed of primary yarns and secondary yarns with different wire diameters arranged in an arc shape to connect the surface layer and the functional yarn layer. The functional yarn layer is made of modified yarn woven from 1%-5% graphene modified masterbatch, 1-5% calcium carbonate energy powder modified masterbatch and the rest base masterbatch, which are mixed evenly in a certain proportion and then spun. The protective layer is a structural layer formed by cross-linking epoxy resin on the surface of the functional yarn layer and plays a major protective role. The graphene-modified masterbatch is formed by modifying the base masterbatch with 5%-20% of graphene. Among them, the calcium carbonate energy powder modified masterbatch is formed by modifying the base masterbatch with 10%-25% calcium carbonate energy powder, and the base masterbatch includes at least one of polyester masterbatch, TPU masterbatch and nylon masterbatch. The preparation method of the calcium carbonate energy powder is: the calcium carbonate powder and the base masterbatch are fed into a nano grinder for grinding, the grinding speed is 1200-1400r / min, the grinding time is 10-15min, and the particle size is <200nm, and the powder is fed into a dispersant and stirred and dispersed for 20-30min, the dispersion speed is 1200-1500r / min, and the dispersion is completed and dried to obtain calcium carbonate energy powder.

2. The contact thermal fabric according to claim 1, characterized in that: The composite yarn is formed by blending nano titanium dioxide catalyst antibacterial fiber and cuprammonia fiber.

3. The contact thermal fabric according to claim 1, characterized in that: The epoxy resin glue is prepared by mixing epoxy resin, polyetheramine and benzyl alcohol, wherein the mass fraction of the epoxy resin is 15-18%, the mass fraction of the polyetheramine is 10-17%, and the balance is anisole.

4. The contact thermal fabric according to claim 1, characterized in that: The method for drawing the modified yarn of the functional yarn layer is to mix the graphene modified masterbatch, the calcium carbonate energy powder modified masterbatch and the base masterbatch in a certain proportion and then draw the yarn, control the supply of the drawing metering pump to 700-850g / min, and the drawing temperature to 290°C.

5. The contact thermal fabric according to claim 4, characterized in that: The modified yarn of the functional yarn layer is twisted after spinning.

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