A corrosion-resistant and conductive base fabric for elastic card clothing and a preparation method thereof

Through multi-layer structure design and hot press bonding process, the problems of poor weather resistance, oxidation resistance and acid and alkali resistance of the existing elastic needle cloth for carding are solved, and the wear resistance, corrosion resistance and electrical conductivity of the elastic needle cloth are achieved, which extends the use cycle and achieves uniform surface treatment of the steel needle, and the material can be recycled.

CN115821434BActive Publication Date: 2025-08-22GUANGSHAN WHITE SHARK CARD CLOTHING CO LTD
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Patent Information

Application Number
CN202211294284.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-21
Publication Date
2025-08-22
Estimated Expiration
2042-10-21

AI Technical Summary

Technical Problem

The base fabric materials of the existing elastic needle cloth for carding have poor weather resistance, oxidation resistance and acid and alkali resistance, are prone to aging and cracking, are flammable and explosive during the preparation process, and cannot achieve surface plating treatment of steel needles, resulting in unstable performance and rapid wear, and cannot be recycled.

Method used

The structural design of 1-2 layers of elastic surface glue layer, 2-12 layers of chemical fiber cloth layer, 2-12 layers of bonding glue layer and 1-3 layers of conductive cloth layer is adopted. Through the combination of thermoplastic soft glue material and thermoplastic elastic plastic, tight bonding between multiple layers is achieved. Combined with the hot press bonding process, a base cloth for elastic needle cloth with wear resistance, corrosion resistance and conductivity is prepared.

Benefits of technology

It improves the wear resistance, corrosion resistance and electrical conductivity of the elastic needle cloth, extends the service cycle, avoids aging and cracking, realizes uniform surface treatment of steel needles, and is recyclable and uses materials, ensuring stable product quality.

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Abstract

The present invention discloses a corrosion-resistant and conductive base fabric for elastic needle clothing and a preparation method thereof, and relates to the field of textile technology. The corrosion-resistant and conductive base fabric for elastic needle clothing in the present application includes an elastic surface adhesive layer, a chemical fiber cloth layer, a bonding adhesive layer and a conductive cloth layer, which is obtained by a hot pressing bonding process. It has excellent wear resistance, corrosion resistance, weather resistance, and conductivity, and has excellent wear resistance, can be used for a long time, and avoids aging and cracking during use. Moreover, the obtained base fabric has excellent tensile strength, elongation and constant force elongation. Moreover, it is used in conjunction with steel needles in the later stage. When the elastic needle clothing is surface treated, the current can flow through the steel needles through the conductive layer, so that the steel needles can be energized for surface treatment, thereby allowing the steel needles to obtain a uniform and dense surface treatment layer, which can realize the later plating, coating, and other various processing of the elastic needle clothing.
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Description

Technical Field

[0001] The present invention relates to the field of textile technology, D01G15 / 84, and in particular to a corrosion-resistant and conductive base fabric for elastic card clothing and a preparation method thereof. Background Art

[0002] Elastic card clothing is commonly used in the textile industry for fine carding of cotton, chemical fibers, wool, silk, linen, and other fibers. Carding elastic card clothing includes: carding flats for carding machines, elastic strip card clothing for carding machines, and elastic raising card clothing for raising and napping machines. However, all of these elastic card clothing require steel needles to be attached to the base fabric before use.

[0003] Currently, the base fabrics used in elastic card clothing worldwide are made from a combination of cotton and rubber vulcanization. These fabrics have the following disadvantages: poor weather resistance, oxidation resistance, and acid and alkali resistance; they are prone to aging and cracking with long-term use; they are prone to generating toxic and harmful gases during the manufacturing process; they are flammable and explosive; and the material cannot be recycled. These factors can lead to unstable performance and rapid wear and tear of elastic card clothing. Furthermore, the surface coating (coating) of the steel needles cannot be achieved, resulting in a rough surface that damages the fiber raw material and rust contamination of the raw material. This results in unstable product quality for card clothing users and short replacement cycles.

[0004] Chinese patent application CN103774291A discloses an elastic card clothing for a cotton opener. The base fabric comprises at least three layers of fabric, woven from a blend of cotton, wool, and linen fibers, interwoven in warp and weft. This increases the elastic card clothing's hardness and elasticity. However, the fabric suffers from poor wear and corrosion resistance, and the steel needles cannot be plated. Summary of the Invention

[0005] In order to solve the above problems, the first aspect of the present invention provides a corrosion-resistant and conductive base fabric for elastic needle clothing, comprising: 1-2 layers of elastic surface rubber layers, 2-12 layers of chemical fiber cloth layers, 2-12 layers of bonding rubber layers and 1-3 layers of conductive cloth layers.

[0006] Preferably, the corrosion-resistant and conductive base fabric for elastic card clothing comprises: 1 elastic surface rubber layer, 2-10 chemical fiber cloth layers, 2-10 bonding rubber layers, and 1-2 conductive cloth layers.

[0007] In some preferred embodiments, the thickness of the corrosion-resistant and conductive elastic card clothing base fabric is 2 to 5 mm, preferably 3 mm.

[0008] The corrosion-resistant and conductive elastic card cloth base fabric obtained in the present application is formed by mutually colloidally laminating the multiple chemical fiber cloth layers and the laminating adhesive layer.

[0009] In some preferred embodiments, the elastic surface rubber layer is prepared from a thermoplastic soft rubber material.

[0010] In some preferred embodiments, the thermoplastic soft rubber material is selected from at least one of styrene-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, polyolefin-based thermoplastic elastomers, and polyamide-based thermoplastic elastomers; preferably, it is a styrene-based thermoplastic elastomer.

[0011] In some preferred embodiments, the elongation at break of the styrene-based thermoplastic elastomer is 650-1150%, preferably 700-950%, and more preferably 738%.

[0012] In some preferred embodiments, the styrene-based thermoplastic elastomer is at least one of EVA, TEP, TPE, TPU, PVC, TPO, and POE; preferably, the first TPE.

[0013] In some preferred embodiments, the hardness of the first TPE is 50-65A, and the tensile strength is 3.4-5.2 MPa; preferably, the hardness is 57A, and the tensile strength is 4.4 MPa.

[0014] In order to improve the wear resistance and corrosion resistance of the base fabric for elastic card clothing for carding, and to increase the combing property of the elastic card clothing when combing the fibers and to have a certain external force release property when encountering external force when used to form the elastic card clothing, so as to be suitable for processing various long and short fibers, the inventors found in experiments that by using a styrene-based thermoplastic elastomer as the elastic surface rubber layer, in particular, using TPE with a hardness of 650 to 1150% and an elongation at break, which has excellent anti-slip properties, low-temperature flexibility, good weather resistance and wear resistance, the surface of the base fabric for the elastic card clothing helps to achieve a smooth, bright, comfortable and durable surface. In addition, it has a flexible and appropriate chain segment length, which not only can achieve a certain degree of confinement and wrapping performance for the implanted steel needles, but also has a certain degree of external force release when encountering external force. In particular, by adopting TPE with a breaking elongation of 738%, it can also resist the corrosion of the elastic needle cloth by the surface treatment liquid during surface treatment of the elastic needle cloth, and can provide a stable structural layer for the steel needles during surface treatment, and solve the technical problem that the elastic needle cloth can be surface treated in an acidic or alkaline environment. However, the inventor found that when the bonding ability between the layers in the base cloth used for the elastic needle cloth is weak, it will affect the close bonding between the elastic base cloth and the implanted steel needles, and further affect the service life of the elastic needle cloth.

[0015] In some preferred embodiments, the thickness of the elastic surface rubber layer is 0.3-1 mm, preferably 0.5 mm.

[0016] In some preferred embodiments, the material of the chemical fiber cloth layer is selected from at least one of polyester, polypropylene, aramid, vinylon, nylon, acrylic, and chloroprene, preferably polyester.

[0017] In some preferred embodiments, the polyester is selected from at least one of short-fiber polyester and filament polyester, preferably short-fiber polyester.

[0018] In some preferred embodiments, the bonding adhesive layer is made of thermoplastic elastic plastic.

[0019] In some preferred embodiments, the hardness of the thermoplastic elastic plastic is 30-80A, preferably 57A.

[0020] In some preferred embodiments, the thermoplastic elastic plastic is selected from at least one of EVA, TEP, TPE, TPU, PVC, TPO, and POE; preferably, it is a second TPE; and more preferably, it is a second modified TPE.

[0021] In some preferred embodiments, the second modified TPE has an elongation at break of 850-1300%, a tensile strength of 9-10.7 MPa, and a tear strength of 23-25 ​​N / mm; preferably, the elongation at break is 990%, the tensile strength is 9.8 MPa, and the tear strength is 22.4 N / mm.

[0022] In order to improve the bonding between the layers in the base fabric for elastic needle clothing, the applicant found that when the raw materials for preparing the bonding layer are consistent with the raw materials for preparing the elastic surface rubber layer, it can not only form a strong surface rubber surface, but also further increase the wear resistance and corrosion resistance of the base fabric. More importantly, its hardness is no less than that of the first TPE used in the elastic top layer, enabling adhesion to the synthetic fabric layer through the hot press bonding process, enhancing the tight bond between the base fabric layers. In particular, when the second modified TPE has a hardness of 50-68A, a hardness of 850-1300%, a tensile strength of 9-10.7 MPa, and a tear strength of 23-25 ​​N / mm, it exhibits good compatibility within the system and penetrates well into the synthetic fabric, elastic top layer, and conductive fabric layers during the hot press bonding process. Leveraging its inherent adhesive properties, it can be effectively applied to the synthetic fabric, elastic top layer, and conductive fabric layers, achieving the desired adhesion of the multilayered materials. Furthermore, it can adjust the hardness of the final base fabric, further enhancing its resilience. Changes in the hardness, short-chain elongation, or tensile strength of the second modified TPE can affect the tight bond between the multilayered components within the base fabric.

[0023] In some preferred embodiments, the thickness ratio of the chemical fiber cloth layer to the bonding adhesive layer is (2-5):1; preferably 3:1.

[0024] In some preferred embodiments, the conductive cloth layer includes a substrate layer and a metal layer.

[0025] In some preferred embodiments, the structure of the conductive cloth layer is, from bottom to top, a substrate layer, a copper layer, and a nickel layer.

[0026] In some preferred embodiments, the material of the substrate layer is fiber cloth; preferably, the material of the fiber cloth is selected from at least one of polyester, polypropylene, aramid, vinylon, nylon, acrylic, and chloroprene; more preferably, polyester.

[0027] In some preferred embodiments, the metal layer is an electroplated metal layer.

[0028] In some preferred embodiments, the metal layer includes at least one of a copper layer, a nickel layer, a zinc layer, an aluminum layer, a gold layer, a silver layer, a chromium layer, and an iron layer; preferably a copper layer and a nickel layer.

[0029] In some preferred embodiments, the thickness of the conductive cloth layer is 0.05-1 mm, preferably 0.2 mm.

[0030] In some preferred embodiments, the surface resistance of the conductive fabric layer is ≤0.08Ω, and the shielding effectiveness at 10MHz to 3GHz is ≥70dB; preferably, the surface resistance is ≤0.05Ω, and the shielding effectiveness at 10MHz to 3GHz is ≥75dB.

[0031] In this application, a fiber cloth substrate is vacuum-nickel plated, and then an appropriate amount of nickel is deposited on the surface of the fiber cloth substrate. The substrate is then subjected to chemical copper plating and chemical nickel plating in sequence, resulting in a chemical fiber cloth material with conductive properties. At the same time, the material also has low impedance, good electromagnetic wave shielding properties, conductive grounding properties, good affinity for sub-sensitive adhesives such as acrylates, high adhesion, good die-cutting properties, no lint, and easy processing. The applicant unexpectedly discovered that when the surface resistance of the conductive cloth layer is ≤0.08Ω and the shielding effectiveness from 10MHz to 3GHz is ≥70dB, when a steel needle is inserted into its surface, when the elastic needle cloth is surface treated, current can flow through the steel needle through the conductive layer, so that the steel needle can be energized for surface treatment, thereby obtaining a uniform and dense surface treatment layer for the steel needle, solving the problem that traditional elastic needle cloth cannot be used for surface treatment of steel needles.

[0032] A second aspect of the present invention provides a process for preparing a corrosion-resistant and conductive base fabric for elastic card clothing, comprising the following steps:

[0033] S1. The raw materials for preparing the bonding layer are laminated by a screw extruder to form a hot film layer to prepare a bonding layer;

[0034] S2. The two layers of chemical fiber cloth and the heat film layer on both sides are heat-pressed and bonded under the action of a pressure roller. The heat-pressed bonding operation is repeated according to the number of layers required to obtain a first multilayer structural material.

[0035] S3. The first multilayer structural material obtained in S2 is thermally pressed and bonded to the conductive cloth layer to obtain a second multilayer structural material;

[0036] S4. Compound an elastic surface adhesive layer on the upper surface of the second multilayer structural material obtained in S3.

[0037] In S1, the temperature of each section in the screw extruder is: the temperature of the feeding section is 150-165°C, the temperature of the second section is 170-180°C, the temperature of the third section is 185-190°C, and the temperature of the fourth section is 195-200°C; preferably, the temperature of the feeding section is 160°C, the temperature of the second section is 180°C, the temperature of the third section is 185°C, and the temperature of the fourth section is 195°C.

[0038] In some preferred embodiments, the nozzle temperature in the screw extruder is 180-190° C., the injection pressure is 37-50 MPa, and the injection time is 2-5 s; preferably, the nozzle temperature is 185° C., the injection pressure is 45 MPa, and the injection time is 4 s.

[0039] In some preferred embodiments, the rotation speed of the screw extruder is 75-85 r / min, preferably 80 r / min.

[0040] In some preferred embodiments, in S2 and S3, the temperature of the thermal compression bonding is 190-240°C, preferably 210°C.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] (1) In the present invention, a rubber surface layer, a chemical fiber layer, a laminating rubber layer, and a conductive fabric layer are provided in the elastic card clothing base fabric. The chemical fiber layer and the laminating rubber layer can be alternately provided in multiple layers as required. The resulting elastic card clothing base fabric has excellent wear resistance, corrosion resistance, weather resistance, and electrical conductivity. It also has excellent wear resistance and can be used for a long time without aging and cracking during use. The resulting base fabric also has excellent tensile strength, elongation, and elongation at constant force.

[0043] (2) In the present invention, thermoplastic elastic plastic particles are added from a hopper and conveyed and compacted forward by the action of a rotating screw through the friction between the inner wall of the barrel and the surface of the screw. In the initial stage, the material is conveyed forward in a solid state. Since there is a heating ring outside the barrel, the temperature settings of multiple sets of heating rings are linearly related. As the temperature increases, the heat is transferred to the material through the machine. At the same time, the material generates friction heat during its forward movement, causing the temperature of the material to gradually increase as it moves forward along the barrel, causing the polymer material to transform from a granular or powdered solid to a molten fluid state. The molten material is continuously conveyed to the front of the screw, passes through a filter screen and a diverter plate, and enters the head to be formed into a hot film layer. Two layers of chemical fiber are arranged on both sides of the hot film layer and enter the pressure roller together to be hot-pressed and bonded, and then tensioned and unwound. The above process is repeated to laminate the multi-layer chemical fiber cloth and the conductive cloth multiple times. Finally, a layer of thermoplastic elastic plastic layer with low hardness and good elasticity is laminated on the upper surface of the multi-layer laminated cloth to obtain a corrosion-resistant and conductive elastic needle cloth base fabric.

[0044] (3) The present invention achieves tight adhesion between the adhesive surface layer, chemical fiber layer, and conductive fabric layer by selecting a specific bonding material, resulting in high adhesion. Furthermore, the bonding can be achieved by controlling processing parameters and performing hot pressing. No toxic or harmful gases are produced during the preparation process, and the materials are recyclable, making the process economical and environmentally friendly.

[0045] (4) The base fabric obtained by the present invention is later used in conjunction with steel needles. When the elastic needle cloth is subjected to surface treatment, the current can flow through the steel needles through the conductive layer, so that the steel needles can be energized for surface treatment, thereby obtaining a uniform and dense surface treatment layer on the steel needles, and realizing various processing such as plating and coating of the elastic needle cloth in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 Structural diagram of the corrosion-resistant and conductive base fabric for elastic card clothing obtained in Example 1.

[0047] Figure 2 Structural diagram of the corrosion-resistant and conductive base fabric for elastic card clothing obtained in Example 2.

[0048] Figure 3 Structural diagram of the corrosion-resistant and conductive base fabric for elastic card clothing obtained in Example 3.

[0049] Figure 4 Actual photo of the corrosion-resistant and conductive base fabric for elastic card clothing.

[0050] Figure 5 Graph showing the corrosion resistance test results of the corrosion-resistant and conductive base fabric for elastic card clothing obtained in Example 3. Description of the drawings:

[0052] 1-Elastic surface adhesive layer; 2-Chemical fiber fabric layer; 3-Laminating adhesive layer; 4-Conductive fabric layer DETAILED DESCRIPTION

[0053] Example 1

[0054] 1. A corrosion-resistant and conductive elastic base fabric for card clothing, comprising: a layer of elastic surface adhesive, two layers of chemical fiber cloth, two layers of bonding adhesive, and a layer of conductive cloth. Figure 1 and Figure 4 shown.

[0055] The thickness of the base fabric for the corrosion-resistant and conductive elastic card clothing is 3 mm.

[0056] The raw material for preparing the elastic surface rubber layer is thermoplastic soft rubber material.

[0057] The thermoplastic soft rubber material is a styrene-based thermoplastic elastomer.

[0058] The breaking elongation of the styrene-based thermoplastic elastomer is 738%.

[0059] The styrene-based thermoplastic elastomer is the first TPE.

[0060] The hardness of the first TPE is 57A and the tensile strength is 4.4 MPa (Nantong Prima Elastomer Technology Co., Ltd., model number P52-004A-3B).

[0061] The thickness of the elastic surface rubber layer is 0.5 mm.

[0062] The material of the chemical fiber cloth layer is polyester.

[0063] The polyester is short-fiber polyester (purchased from Hangzhou Caishi Textile Co., Ltd.).

[0064] The raw material for preparing the bonding adhesive layer is thermoplastic elastic plastic.

[0065] The hardness of the thermoplastic elastic plastic is 57A.

[0066] The thermoplastic elastic plastic is a second modified TPE.

[0067] The second modified TPE has an elongation at break of 990%, a tensile strength of 9.8 MPa, and a tear strength of 24.4 N / mm (sourced from Guangshan White Shark Card Cloth Co., Ltd.).

[0068] The thickness ratio of the chemical fiber cloth layer to the bonding adhesive layer is 3:1.

[0069] The conductive cloth layer includes a base material layer and a metal layer.

[0070] The structure of the conductive cloth layer comprises a base material layer and a metal layer from bottom to top.

[0071] The material of the base material layer is fiber cloth; the material of the fiber cloth is polyester.

[0072] The metal layer is an electroplated metal layer.

[0073] The metal layers are copper layers and nickel layers.

[0074] The thickness of the conductive cloth layer is 0.2 mm.

[0075] The surface resistance of the conductive fabric layer is ≤0.05Ω, and the shielding effectiveness at 10MHz to 3GHz is ≥75dB.

[0076] The conductive fabric layer is sourced from Guangshan White Shark Card Cloth Co., Ltd.

[0077] 2. A process for preparing a corrosion-resistant and conductive elastic base fabric for card clothing, comprising the following steps:

[0078] S1. The raw materials for preparing the bonding layer are laminated by a screw extruder to form a hot film layer to prepare a bonding layer;

[0079] S2. The two layers of chemical fiber cloth and the heat film layer on both sides are heat-pressed and bonded under the action of a pressure roller. The heat-pressed bonding operation is repeated according to the number of layers required to obtain a first multilayer structural material.

[0080] S3. The first multilayer structural material obtained in S2 is thermally pressed and bonded to the conductive cloth layer to obtain a second multilayer structural material;

[0081] S4. Compound an elastic surface adhesive layer on the upper surface of the second multilayer structural material obtained in S3.

[0082] In S1, the temperature of each section in the screw extruder is: the temperature of the feeding section is 160°C, the temperature of the second section is 180°C, the temperature of the third section is 185°C, and the temperature of the fourth section is 195°C.

[0083] The nozzle temperature of the screw extruder was 185° C., the injection pressure was 45 MPa, and the injection time was 4 s.

[0084] The speed of the screw extruder is 80 r / min.

[0085] In S2 and S3,

[0086] The temperature of the thermocompression bonding was 210°C.

[0087] Example 2

[0088] 1. A corrosion-resistant and conductive base fabric for elastic card clothing, which differs from Example 1 in that:

[0089] The corrosion-resistant and conductive elastic needle cloth base fabric comprises: 1 elastic surface rubber layer, 4 chemical fiber cloth layers, 4 bonding rubber layers, and 1 conductive cloth layer. Figure 2 shown.

[0090] 2. A process for preparing a corrosion-resistant and conductive base fabric for elastic card clothing, same as that of Example 1.

[0091] Example 3

[0092] 1. A corrosion-resistant and conductive base fabric for elastic card clothing, which differs from Example 1 in that:

[0093] The corrosion-resistant and conductive elastic needle cloth base fabric comprises: 1 elastic surface rubber layer, 10 chemical fiber cloth layers, 10 bonding rubber layers, and 1 conductive cloth layer. Figure 3 shown.

[0094] 2. A process for preparing a corrosion-resistant and conductive base fabric for elastic card clothing, same as that of Example 1.

[0095] Example 4

[0096] 1. A corrosion-resistant and conductive base fabric for elastic card clothing, which differs from Example 1 in that:

[0097] The breaking elongation of the styrene-based thermoplastic elastomer is 545%.

[0098] The styrene-based thermoplastic elastomer is the first TPE.

[0099] The hardness of the first TPE is 65A and the tensile strength is 3.22 MPa (Nantong Prima Elastomer Technology Co., Ltd., model number P1765A).

[0100] 2. A process for preparing a corrosion-resistant and conductive base fabric for elastic card clothing, same as that of Example 1.

[0101] Example 5

[0102] 1. A corrosion-resistant and conductive base fabric for elastic card clothing, which differs from Example 1 in that:

[0103] The breaking elongation of the styrene-based thermoplastic elastomer is 336%.

[0104] The styrene-based thermoplastic elastomer is the first TPE.

[0105] The hardness of the first TPE is 50A and the tensile strength is 1.18 MPa (Nantong Prima Elastomer Technology Co., Ltd., model P1750).

[0106] 2. A process for preparing a corrosion-resistant and conductive base fabric for elastic card clothing, same as that of Example 1.

[0107] Example 6

[0108] 1. A corrosion-resistant and conductive base fabric for elastic card clothing, which differs from Example 1 in that:

[0109] The raw material for preparing the bonding adhesive layer is thermoplastic elastic plastic.

[0110] The hardness of the thermoplastic elastic plastic is 85A.

[0111] The thermoplastic elastic plastic is a second TPE.

[0112] The second TPE has an elongation at break of 730% and a tensile strength of 7.94 MPa (Nantong Prima Elastomer Technology Co., Ltd., model P1785).

[0113] 2. A process for preparing a corrosion-resistant and conductive base fabric for elastic card clothing, same as that of Example 1.

[0114] Example 7

[0115] 1. A corrosion-resistant and conductive base fabric for elastic card clothing, which differs from Example 1 in that:

[0116] The thickness ratio of the chemical fiber cloth layer to the bonding adhesive layer is 1:1.

[0117] 2. A process for preparing a corrosion-resistant and conductive base fabric for elastic card clothing, same as that of Example 1.

[0118] Performance Testing

[0119] 1. The following tests were conducted on the corrosion-resistant and conductive elastic card clothing base fabrics obtained in Examples 1-3. The test results are shown in Table 1.

[0120] Table 1 Test results of the elastic base fabric for card clothing obtained in Examples 1-3

[0121]

[0122]

[0123] 2. The corrosion resistance test was carried out on the base fabric of the corrosion-resistant and conductive elastic card clothing obtained in Examples 1-3.

[0124] The specific operations are:

[0125] The test chamber is equipped with a salt solution containing 5% sodium chloride and a pH value of 6.5-7.2, which is sprayed through a spray device. The temperature of the test chamber is 35 degrees Celsius, the humidity is greater than 95%, and the fogging rate is 1-2 ml / (h.80 cm 2 ), the nozzle 5 pressure is 78.5-137.3KPa; by dropping salt mist onto the corrosion-resistant and conductive elastic card clothing base fabric prepared in Examples 1-3, after 36 hours, the corrosion-resistant and conductive elastic card clothing base fabric was observed for rust. No rust was evaluated as A, a small amount of rust was evaluated as B, and a large amount of rust was evaluated as C. The test results are shown in Table 2; the steel needles in the elastic card clothing prepared in Example 3 were subjected to a neutral salt spray test for 36 hours. Figure 5 .

[0126] 3. Rebound Resilience Test: The elastic layers of Examples 1-9 were stretched by applying an external force. Within 30 seconds, the elastic layers were stretched to a length twice their original length. The external force was released and the elastic layers were observed for 1 minute. The ratio of the recovered length to the length before stretching was shown in Table 2.

[0127] Table 2 Corrosion resistance and resilience test results of the elastic card cloth base fabric obtained in the embodiment

[0128]

[0129]

Claims

1. A corrosion-resistant and conductive elastic base fabric for card clothing, characterized in that: include: 1-2 layers of elastic surface rubber layer, 2-12 layers of chemical fiber cloth layer, 2-12 layers of bonding rubber layer and 1-3 layers of conductive cloth layer; the raw material for preparing the elastic surface rubber layer is thermoplastic soft rubber material, the thermoplastic soft rubber material is styrene thermoplastic elastomer, the elongation at break of the styrene thermoplastic elastomer is 650~1150%, the styrene thermoplastic elastomer is the first TPE, the hardness of the first TPE is 50~65A, and the tensile strength is 3.4~5.2MPa; the raw material for preparing the bonding rubber layer is thermoplastic elastic plastic, the thermoplastic elastic plastic is the second Modified TPE, the second modified TPE has a hardness of 50-68A and a hardness of 850-1300%, a tensile strength of 9-10.7 MPa, and a tear strength of 23-25 ​​N / mm; the thickness ratio of the chemical fiber cloth layer to the bonding adhesive layer is (2-5):1; the conductive cloth layer includes a substrate layer and a metal layer; the metal layer is an electroplated metal layer; the metal layer includes at least one of a copper layer, a nickel layer, a zinc layer, an aluminum layer, a gold layer, a silver layer, a chromium layer, and an iron layer; the surface resistance of the conductive cloth layer is ≤0.08Ω, and the shielding effectiveness of 10MHz-3GHz is ≥70dB.

2. The corrosion-resistant and conductive base fabric for elastic card clothing according to claim 1, characterized in that: The thickness of the corrosion-resistant and conductive elastic card clothing base fabric is 2-5 mm.

3. The corrosion-resistant and conductive base fabric for elastic card clothing according to claim 1, characterized in that: The material of the chemical fiber cloth layer is selected from at least one of polyester, polypropylene, aramid, vinylon, nylon, acrylic, and chloroprene.

4. The corrosion-resistant and conductive base fabric for elastic card clothing according to claim 1, characterized in that: The thickness of the conductive cloth layer is 0.05-1 mm.

Citation Information

Patent Citations

  • Resilient card clothing for cotton slitting machine

    CN103774291A

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    CN105209672A