A reinforcing plate for FFC cable

Abstract

The utility model discloses a kind of reinforcing plates for FFC cable, including by outer to inner sequentially arranged substrate, carbon fiber layer and adhesive layer;Two sides of the carbon fiber layer are coated with coating, the carbon fiber layer is adhered with the inner side of the substrate and the outer side of the adhesive layer respectively by two The coating;The inner side of the adhesive layer is used to adhere the outer circumferential surface of FFC cable;The carbon fiber layer is made of warp-weft staggered carbon fiber weaving;The thickness of the carbon fiber layer is 150-300 μm.Carbon fiber layer has good tensile strength, coating can be partially filled between warp-weft staggered carbon fiber, so that coating has stronger adhesion, can improve the tensile strength of reinforcing plate, and film layer separation phenomenon is not prone to appear, carbon fiber layer also has good flame-retardant effect.

Description

Technical Field

[0001] This utility model relates to the field of FFC cable technology, and in particular to a reinforcing plate for FFC cables. Background Technology

[0002] In the existing technology, both ends of the FFC cable need to be connected to the corresponding electrical components via terminals.

[0003] During installation, testing, and use, terminals often need to be plugged in and unplugged, which requires that both ends of the FFC cable with terminals have good plugging and unplugging resistance.

[0004] To improve the insertion and removal resistance of the FFC cable, reinforcing plates need to be wrapped around both ends of the FFC cable before connecting the terminals. The reinforcing plates improve the connection stability between the terminals and the ends of the FFC cable.

[0005] In the existing technology, the reinforcing plate is prone to membrane separation during use, which causes the insertion and removal resistance of the FFC cable ends to fail to meet the requirements. Utility Model Content

[0006] To address the aforementioned shortcomings, the purpose of this invention is to propose a reinforcing plate for FFC cables, thereby solving the problem that the internal film layer of the reinforcing plate is prone to separation during use, which affects the insertion and extraction resistance of the FFC cable ends.

[0007] To achieve this objective, the present invention adopts the following technical solution: A reinforcing plate for FFC cables includes a substrate, a carbon fiber layer, and an adhesive layer arranged sequentially from the outside to the inside. Both sides of the carbon fiber layer are coated with a coating, and the carbon fiber layer is bonded to the inner side of the substrate and the outer side of the adhesive layer through the two coatings respectively. The inner surface of the adhesive layer is used to bond the outer peripheral surface of the FFC cable; The carbon fiber layer is woven from interlaced carbon fibers; The thickness of the carbon fiber layer is 150-300 μm.

[0008] Preferably, the substrate is a PI film; The thickness of the substrate is 100-150 μm.

[0009] Preferably, the adhesive layer is a polybutadiene diol film; Preferably, the coating is a heat-resistant polyurethane coating with a thickness of 3-5 μm.

[0010] Preferably, the corona value of the inner surface of the corona-treated substrate is ≥52dy.

[0011] Specifically, the tensile strength of the reinforcing plate after standing in a 125℃ environment for 168h, 500h and 1000h is 430-436MPa, 334-386MPa and 194-291MPa respectively, and the corresponding peel strength with the outer periphery of the FFC cable is 29.5-35.5N / 15mm, 23.8-28.4N / 15mm and 19.4-22.9N / 15mm respectively.

[0012] The beneficial effects of the technical solution of this utility model are as follows: A reinforcing plate for FFC cables includes a substrate, a carbon fiber layer and an adhesive layer that are bonded together in sequence. The carbon fiber layer is made of interwoven carbon fibers and has good tensile strength. The coating can partially fill the spaces between the interwoven carbon fibers, making the coating have stronger adhesion and improving the tensile strength of the reinforcing plate. It is less likely to cause the internal film layer to separate, thereby avoiding affecting the insertion and extraction resistance of the FFC cable ends. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of one embodiment of the reinforcing plate for FFC cables according to the present invention; Wherein: substrate 1; coating 2; carbon fiber layer 3; adhesive layer 4. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0015] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] A reinforcing plate for FFC cables includes a substrate 1, a carbon fiber layer 3, and an adhesive layer 4 arranged sequentially from the outside to the inside. Both sides of the carbon fiber layer 3 are coated with coating 2, and the carbon fiber layer 3 is bonded to the inner side of the substrate 1 and the outer side of the adhesive layer 4 through the two coatings 2 respectively. The inner surface of the adhesive layer 4 is used to bond the outer periphery of the FFC cable; The carbon fiber layer 3 is woven from interlaced carbon fibers; The thickness of the carbon fiber layer 3 is 150-300 μm.

[0018] like Figure 1 As shown, the present invention provides a reinforcing plate for FFC cables, comprising a carbon fiber layer 3 woven from interlaced carbon fibers. The carbon fiber layer 3 has good tensile strength. The coating 2 can partially fill the spaces between the interlaced carbon fibers, making the coating 2 have stronger adhesion, which can improve the tensile strength of the reinforcing plate and prevent film separation. The carbon fiber layer 3 also has good flame retardant effect.

[0019] Preferably, the substrate 1 is a PI film; The thickness of the substrate 1 is 100-150 μm.

[0020] PI film is a polymer material containing imide or succinimide, hence it is also called polyimide film. A substrate 1 made of PI film with a thickness of 100-150 μm has good heat resistance and tensile strength, as well as a low dielectric constant and good insulation properties.

[0021] Preferably, the adhesive layer 4 is a polybutadiene diol film; The thickness of the adhesive layer 4 is 25-45 μm.

[0022] The adhesive layer 4 of the polybutadiene diol film still has good adhesive properties even at a low temperature of -20℃.

[0023] Preferably, the coating 2 is a heat-resistant polyurethane coating with a thickness of 3-5 μm.

[0024] It should be noted that the polyurethane coatings described above contain polycarbonate, which can further improve the heat resistance of coating 2, hence the name heat-resistant polyurethane coating.

[0025] Preferably, the corona value of the inner surface of the substrate 1 after corona treatment is ≥52dy.

[0026] After the inner surface of the substrate 1 is corona treated, the adhesion of the coating 2 to the inner surface of the substrate 1 can be improved.

[0027] Specifically, the tensile strength of the reinforcing plate after standing in a 125℃ environment for 168h, 500h and 1000h is 430-436MPa, 334-386MPa and 194-291MPa respectively, and the corresponding peel strength with the outer periphery of the FFC cable is 29.5-35.5N / 15mm, 23.8-28.4N / 15mm and 19.4-22.9N / 15mm respectively.

[0028] The tensile strength and peel strength obtained through testing demonstrate that the reinforcing plate of this invention has good heat resistance and strong adhesion.

[0029] Examples and Comparative Examples

[0030] Thermal aging test: The samples were placed in an environment of 125℃ for 168h, 500h, and 1000h; then the tensile strength and peel strength of each sample were tested.

[0031] 1.1 Tensile strength test results

[0032] 1.2 Peel force of adhesive layer on FFC cable surface

[0033] In summary, such as Figure 1 The embodiment of the present invention shown in the figure includes a reinforcing plate for FFC cables, comprising a carbon fiber layer 3 woven from interlaced carbon fibers. The coating 2 can partially fill the spaces between the interlaced carbon fibers, thereby giving the coating 2 stronger adhesion, improving the tensile strength of the reinforcing plate, and preventing the internal film layer from separating, thus avoiding affecting the insertion and extraction resistance of the FFC cable ends.

[0034] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A reinforcing plate for FFC cables, characterized in that, It includes a substrate, a carbon fiber layer, and an adhesive layer arranged sequentially from the outside to the inside; Both sides of the carbon fiber layer are coated with a coating, and the carbon fiber layer is bonded to the inner side of the substrate and the outer side of the adhesive layer through the two coatings respectively. The inner surface of the adhesive layer is used to bond the outer peripheral surface of the FFC cable; The carbon fiber layer is woven from interlaced carbon fibers; The thickness of the carbon fiber layer is 150-300 μm.

2. The reinforcing plate for FFC cables according to claim 1, characterized in that, The substrate is a PI film; The thickness of the substrate is 100-150 μm.

3. The reinforcing plate for FFC cables according to claim 2, characterized in that, The adhesive layer is a polybutadiene diol film.

4. The reinforcing plate for FFC cables according to claim 3, characterized in that, The coating is a heat-resistant polyurethane coating with a thickness of 3-5 μm.

5. The reinforcing plate for FFC cables according to claim 4, characterized in that, The corona value of the inner surface of the substrate after corona treatment is ≥52dy.

6. The reinforcing plate for FFC cables according to claim 5, characterized in that, The tensile strengths of the reinforcing plate after standing in a 125℃ environment for 168h, 500h and 1000h are 430-436MPa, 334-386MPa and 194-291MPa, respectively, and the corresponding peel strengths with the outer periphery of the FFC cable are 29.5-35.5N / 15mm, 23.8-28.4N / 15mm and 19.4-22.9N / 15mm, respectively.

Images