Longitudinal watertight category 6 network cable

Abstract

The utility model discloses a longitudinal watertight category 6 network cable, which relates to the technical field of network cables, and comprises a gluing cable core, the gluing cable core comprises four inner aluminum plastic films, the four inner aluminum plastic films are separated by a cross-shaped framework, the cross-shaped framework is a fluoroplastic frame, two conductors arranged side by side are arranged in the inner aluminum plastic films, the conductors are silver-plated copper wires, and the inner aluminum plastic films are arranged in the cross-shaped framework. A fluoroplastic insulating layer is extruded outside the conductor, a layer of outer aluminum plastic film is lapped outside the gluing cable core, a shielding layer is woven outside the outer aluminum plastic film, the shielding layer is a tinned copper wire layer, a layer of water-blocking tape is adhered outside the shielding layer through bi-component thermosetting watertight glue, and a polyether polyurethane outer sheath is extruded outside the water-blocking tape. According to the utility model, the cooperation of the two-component thermosetting watertight glue and the water-blocking tape and the arrangement of the cross-shaped skeleton not only improve the overall watertightness of the cable, but also improve the overall strength of the cable, and the water pressure resistance is stronger.

Description

Technical Field

[0001] This utility model relates to the field of network cable technology, specifically a longitudinally watertight Category 6 network cable. Background Technology

[0002] In existing technologies, longitudinal watertight Category 6 network cables are essential key components for equipment such as submarines, sonar, underwater acoustic transducers, and underwater robots. They are mainly used in underwater ship signal transmission systems, serving as a bridge for signal transmission between underwater equipment and ships to ensure signal transmission.

[0003] However, when the water pressure reaches 6.5MPa, the existing longitudinal watertight Category 6 network cable does not have good electrical performance and reliable watertight performance. Long-term use may cause the network cable to be corroded by seawater, which not only affects the use but also causes economic losses. Therefore, improvements are needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a vertically watertight Category 6 network cable, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A longitudinal watertight Category 6 network cable includes an adhesive-coated cable core, an outer aluminum-plastic film wrapped around the adhesive-coated cable core, a shielding layer woven outside the outer aluminum-plastic film, the shielding layer being a tin-plated copper wire layer, a water-blocking tape bonded to the outside of the shielding layer by a two-component thermosetting watertight adhesive, and a polyether-type polyurethane outer sheath extruded outside the water-blocking tape.

[0007] Specifically, in this utility model, the coated cable core includes four inner aluminum-plastic films, which are separated by a cross-shaped frame. The cross-shaped frame is a fluoroplastic frame. Two conductors are arranged side by side in the inner aluminum-plastic films. The conductors are silver-plated copper wires, and the conductors are covered with a fluoroplastic insulation layer.

[0008] To improve the water tightness of the cable, a two-component thermosetting watertight adhesive is applied to the gaps between the outer aluminum-plastic film and the inner and outer aluminum-plastic films, as well as to the gaps between the inner and outer aluminum-plastic films and the fluoroplastic insulation layer.

[0009] Compared with the prior art, this utility model has the following advantages: the combination of two-component thermosetting watertight adhesive and water-blocking tape, as well as the arrangement of the cross skeleton, not only improves the overall watertightness of the cable, but also improves the overall strength of the cable and enhances its water pressure resistance. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the present invention.

[0011] Reference numerals: 1. Outer aluminum-plastic film; 2. Shielding layer; 3. Water-blocking tape; 4. Polyether-type polyurethane outer sheath; 5. Inner aluminum-plastic film; 6. Cross skeleton; 7. Conductor; 8. Fluoroplastic insulation layer. Detailed Implementation

[0012] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0013] like Figure 1 As shown, this utility model provides a longitudinal watertight Category 6 network cable, including an adhesive-coated cable core, an outer aluminum-plastic film wrapped around the adhesive-coated cable core, a shielding layer woven outside the outer aluminum-plastic film, the shielding layer being a tin-plated copper wire layer, a water-blocking tape bonded to the outside of the shielding layer by a two-component thermosetting watertight adhesive, and a polyether-type polyurethane outer sheath extruded outside the water-blocking tape. The polyether-type polyurethane outer sheath has good hydrolysis resistance. During subsequent component processing, the network cable and connector tails need to undergo a vulcanization process at a vulcanization temperature of 120℃, a pressure of 3-5 MPa, and a time of 2 hours. The watertight adhesive used in this network cable is all thermosetting, and the watertight adhesive will not melt or shift when the network cable is heated, thus having a relatively stable watertight structure and water pressure resistance, thereby ensuring the transmission of network cable signals.

[0014] The two-component thermosetting watertight adhesive undergoes accelerated curing in a 200℃ high-temperature drying tunnel to ensure that conductors do not stick together during rapid and continuous production. This advantage is that the adhesive cures quickly after being applied to the conductor and has good affinity with the insulation layer, resulting in good adhesion without delamination. This ensures the longitudinal watertightness of the conductor. The dielectric constant of the adhesive is similar to that of the insulation layer, ensuring the stability of the dielectric constant of the network cable insulation medium and guaranteeing the data transmission performance of the product.

[0015] Specifically, the coated cable core of this utility model includes four inner aluminum-plastic films. The outer aluminum-plastic film and the inner aluminum-plastic film work together to give the cable better transmission performance and further improve the cable's anti-interference ability. The four inner aluminum-plastic films are separated by a cross-shaped frame. The cross-shaped frame is made of fluoroplastic. When the cable is subjected to water pressure, the cross-shaped frame has good support and avoids the core from deforming due to water pressure, which would affect the transmission performance of Category 6 network cable. Two conductors are arranged side by side in the inner aluminum-plastic film. The conductors are silver-plated copper wires and are covered with a fluoroplastic insulation layer. The insulation is made by fluoroplastic extrusion at an extrusion temperature of 350°C.

[0016] To improve the water tightness of the cable, a two-component thermosetting watertight adhesive is applied to the gaps between the outer aluminum-plastic film and the inner and outer aluminum-plastic films, as well as the gaps between the inner and outer aluminum-plastic films and the fluoroplastic insulation layer.

[0017] The experiment showed that the cable had the following characteristics: DC resistance imbalance ≤2.0% at 20℃, working capacitance ≤35pF / m, characteristic impedance 100Ω±10Ω, near-end crosstalk (NEXT 4MHz~250MHz) 60dB, structural return loss (250MHz) ≥15.6dB, and delay difference (4MHz~250MHz) ≤45ns / 100m.

[0018] Attenuation values: ≤7.1dB / 100m (10MHz), ≤9.8dB / 100m (20MHz), ≤10.9dB / 100m (25MHz), ≤16.1dB / 100m (62.5MHz), ≤20.0dB / 100m (100MHz), ≤27.5dB / 100m (200MHz), ≤30.7dB / 100m (250MHz);

[0019] It can withstand a longitudinal 6.5 MPa watertight test, with a length of 1.5 meters. After the water pressure reaches 6.5 MPa and continues for 6.25 hours, the free end of the network cable sample does not leak water, and the displacement of any component at the end of the sample exposed in the water tank relative to the sample sheath is no more than 6.4 mm. After the above test, the appearance is not deformed, the withstand voltage test does not break down, the DC resistance of the conductor does not change, and the transmission performance meets the requirements.

[0020] The polyether-type polyurethane outer sheath has strong hydrolysis resistance. According to the method specified in GB / T 2951.21-2008, it can meet the hydrolysis test at 80℃ for 168h, with an elongation ≥300% and a strength and elongation change rate not greater than ±30%.

[0021] Finally, the most significant contribution of this invention is that the combination of the two-component thermosetting watertight adhesive and the water-blocking tape, along with the arrangement of the cross-shaped frame, not only improves the overall watertightness of the cable but also enhances its overall strength and water pressure resistance.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A longitudinally watertight Category 6 network cable, characterized in that: It includes a coated cable core, an outer aluminum-plastic film wrapped around the coated cable core, a shielding layer woven outside the outer aluminum-plastic film, a water-blocking tape bonded to the outside of the shielding layer by a two-component thermosetting watertight adhesive, and a polyether-type polyurethane outer sheath extruded outside the water-blocking tape.

2. The longitudinally watertight Category 6 cable according to claim 1, characterized in that: The shielding layer is a tin-plated copper wire layer.

3. The longitudinally watertight Category 6 cable according to claim 2, characterized in that: The coated cable core includes four inner aluminum-plastic films, which are separated by a cross-shaped frame. Two conductors are arranged side by side in the inner aluminum-plastic films. The conductors are silver-plated copper wires and are covered with a fluoroplastic insulation layer.

4. The longitudinally watertight Category 6 cable according to claim 3, characterized in that: The cross-shaped frame is made of fluoroplastic.

5. A longitudinally watertight Category 6 network cable according to claim 4, characterized in that: The gaps between the outer aluminum-plastic film and the inner and outer aluminum-plastic films, as well as the gaps between the inner and outer aluminum-plastic films and the fluoroplastic insulation layer, are all coated with a two-component thermosetting watertight adhesive.

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