Environment-friendly low-smoke halogen-free composite flame-retardant wrapping tape

Abstract

The utility model relates to the technical field of flame-retardant wrapping tapes, and discloses an environment-friendly low-smoke halogen-free composite flame-retardant wrapping tape, which comprises a flame-retardant wrapping tape main body, the flame-retardant wrapping tape main body comprises a functional layer and a composite flame-retardant glass fiber tape, the functional layer is arranged on the outer surface of the composite flame-retardant glass fiber tape, and the composite flame-retardant glass fiber tape is arranged on the functional layer. The composite flame-retardant glass fiber belt is composed of a flame-retardant alkali-free glass cloth belt and a low-smoke halogen-free film, the functional layer is composed of a wear-resistant and scratch-resistant layer and an aluminum-plastic composite belt, and through the arrangement of the flame-retardant wrapping belt body composed of the flame-retardant alkali-free glass cloth belt and the low-smoke halogen-free film, when a fire occurs in a cable laying routing place, the flame-retardant wrapping belt body can be taken out, and the flame-retardant wrapping belt body can be taken out. The flame cannot directly act on the low-smoke halogen-free sheath in the cable, and the wrapping fire blocking layer plays a role in preventing local concentrated heating of the sheath and restraining deformation and cracking of the sheath, so that the cable does not have any burning drippings any more, the flame spreading prevention performance of the cable is improved, the overflow of combustible gas decomposed from organic matters is reduced, and the service life of the cable is prolonged. And the combustion performance of the cable can completely meet the requirement of B1d0-level combustion performance.

Description

Technical Field

[0001] The utility model relates to the technical field of flame-retardant tapes, in particular to an environmentally friendly low-smoke halogen-free composite flame-retardant tape. Background Art

[0002] In order to prevent the flame from spreading along the cable or the combustible particles in the cable from dripping in the flame, which may cause the fire to expand, the relevant design specifications have made corresponding requirements for the combustion performance of cables under different building environment conditions. GB 31247 "Classification of Combustion Performance of Cables and Optical Cables" gives specific classification parameters and indicators for the combustion performance of cable products. Among them, B1 and B2 grades are further classified in terms of burning dripping, smoke toxicity and corrosiveness. In the existing product technology, it is not difficult to achieve B1 grade, and it is also easy to meet the additional smoke toxicity and corrosiveness. The most difficult thing is to meet the requirement of no burning dripping during the test, that is, d0. This is because the outer sheath of B1 grade cable uses low-smoke halogen-free material. The decomposition and expansion of the material during its combustion process can easily cause the unburned particles in the outer sheath to collapse and form burning dripping. Although material manufacturers continue to improve the formula to meet the requirements of B1d0 grade, it is still difficult to guarantee 100% satisfaction and the material price is expensive. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides an environmentally friendly, low-smoke, halogen-free composite flame-retardant tape to solve the above technical problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an environmentally friendly low-smoke halogen-free composite flame-retardant tape, comprising a flame-retardant tape body, the flame-retardant tape body comprising a functional layer and a composite flame-retardant glass fiber tape, the functional layer being arranged on the outer surface of the composite flame-retardant glass fiber tape, the composite flame-retardant glass fiber tape being composed of a flame-retardant alkali-free glass cloth tape and a low-smoke halogen-free film, the functional layer being composed of a wear-resistant and scratch-resistant layer and an aluminum-plastic composite tape.

[0007] Preferably, the flame-retardant alkali-free glass cloth tape is arranged on the outer surface of the low-smoke halogen-free film.

[0008] Preferably, the wear-resistant and scratch-resistant layer is arranged on the upper surface of the aluminum-plastic composite belt.

[0009] Preferably, the overlapping rate of the flame-retardant tape body wrapped around the cable surface is 30% to 50%.

[0010] Preferably, the flame retardant tape body is bonded to the outer surface of the common low-smoke halogen-free cable by silicone glue or by hot-melting the low-smoke halogen-free film on the composite flame retardant glass fiber tape to the outer surface of the common low-smoke halogen-free cable.

[0011] Preferably, the thickness of the low-smoke halogen-free film is 0.2-0.5 mm, and the thickness of the flame-retardant alkali-free glass cloth tape is 0.3-0.5 mm.

[0012] Preferably, the thickness of the aluminum-plastic composite belt is 0.5 mm, and the thickness of the wear-resistant and scratch-resistant layer is 0.3 mm.

[0013] Compared with the prior art, the utility model provides an environmentally friendly low-smoke halogen-free composite flame-retardant tape, which has the following beneficial effects:

[0014] 1. The utility model provides a flame-retardant tape body composed of a flame-retardant alkali-free glass cloth tape and a low-smoke halogen-free film. When a fire occurs in the cable laying route, the flame cannot directly act on the low-smoke halogen-free sheath in the cable. The wrapped fire barrier layer prevents the sheath from being locally heated and restrains the sheath from deforming and cracking, so that the cable no longer has any burning drips, and also improves the performance of the cable in preventing the spread of flames, reduces the overflow of combustible gases decomposed from organic matter, and makes the combustion performance of the cable fully meet the requirements of B1d0 combustion performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the flame-retardant tape body of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the functional layer of the utility model;

[0018] Figure 4 It is a schematic diagram of the composite flame-retardant glass fiber tape of the present utility model.

[0019] Among them: 1. Flame-retardant tape body; 2. Functional layer; 3. Composite flame-retardant fiberglass tape; 4. Wear-resistant and scratch-resistant layer; 5. Aluminum-plastic composite tape; 6. Flame-retardant alkali-free glass cloth tape; 7. Low-smoke halogen-free film. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-4 An environmentally friendly low-smoke halogen-free composite flame-retardant tape comprises a flame-retardant tape body 1, the flame-retardant tape body 1 comprises a functional layer 2 and a composite flame-retardant glass fiber tape 3, the functional layer 2 is arranged on the outer surface of the composite flame-retardant glass fiber tape 3, the composite flame-retardant glass fiber tape 3 is composed of a flame-retardant alkali-free glass cloth tape 6 and a low-smoke halogen-free film 7, and the functional layer 2 is composed of a wear-resistant and scratch-resistant layer 4 and an aluminum-plastic composite tape 5.

[0024] By setting the flame retardant tape body 1 composed of the flame retardant alkali-free glass cloth tape 6 and the low-smoke halogen-free film 7, when a fire occurs in the cable laying route, the flame cannot directly act on the low-smoke halogen-free sheath in the cable, and the wrapped fire barrier layer plays a role in preventing the sheath from being locally heated and restraining the sheath from deformation and cracking, so that the cable no longer has any burning dripping, and also improves the performance of the cable in preventing the spread of flames, reduces the overflow of combustible gases decomposed from organic matter, and makes the combustion performance of the cable fully meet the requirements of B1d0 combustion performance.

[0025] Specifically, in this embodiment, the flame-retardant alkali-free glass cloth tape 6 is arranged on the outer surface of the low-smoke halogen-free film 7 .

[0026] Specifically, in this embodiment, the wear-resistant and scratch-resistant layer 4 is disposed on the upper surface of the aluminum-plastic composite belt 5 .

[0027] Specifically, in this embodiment, the flame retardant tape body 1 is wrapped around the cable surface with an overlap rate of 30% to 50%, which can ensure that the smoke generated by the burning of the cable is non-toxic and non-corrosive and the smoke density transmittance is not less than 60%.

[0028] Specifically, in this embodiment, the flame retardant tape body 1 is bonded to the outer surface of the ordinary low-smoke halogen-free cable by silicone glue or by hot-melting the low-smoke halogen-free film 7 on the composite flame retardant glass fiber tape 3 to the outer surface of the ordinary low-smoke halogen-free cable.

[0029] Specifically, in this embodiment, the thickness of the low-smoke halogen-free film is 0.2-0.5 mm, and the thickness of the flame-retardant alkali-free glass cloth tape 6 is 0.3-0.5 mm.

[0030] Specifically, in this embodiment, the thickness of the aluminum-plastic composite belt 5 is 0.5 mm, and the thickness of the wear-resistant and scratch-resistant layer 4 is 0.3 mm.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly low-smoke halogen-free composite flame-retardant tape, comprising a flame-retardant tape body, characterized in that: The flame retardant tape body includes a functional layer and a composite flame retardant glass fiber tape. The functional layer is arranged on the outer surface of the composite flame retardant glass fiber tape. The composite flame retardant glass fiber tape is composed of a flame retardant alkali-free glass cloth tape and a low-smoke halogen-free film. The functional layer is composed of a wear-resistant and scratch-resistant layer and an aluminum-plastic composite tape.

2. The environmentally friendly low-smoke halogen-free composite flame-retardant tape according to claim 1, characterized in that: The flame-retardant alkali-free glass cloth tape is arranged on the outer surface of the low-smoke halogen-free film.

3. The environmentally friendly low-smoke halogen-free composite flame-retardant tape according to claim 2, characterized in that: The wear-resistant and scratch-resistant layer is arranged on the upper surface of the aluminum-plastic composite belt.

4. The environmentally friendly low-smoke halogen-free composite flame-retardant tape according to claim 1, characterized in that: The flame retardant tape body is wrapped around the cable surface with an overlapping rate of 30% to 50%.

5. The environmentally friendly low-smoke halogen-free composite flame-retardant tape according to claim 1, characterized in that: The flame retardant tape body is bonded to the outer surface of the common low-smoke halogen-free cable by silicone resin glue or by hot-melting the low-smoke halogen-free film on the composite flame retardant glass fiber tape to the outer surface of the common low-smoke halogen-free cable.

6. The environmentally friendly low-smoke halogen-free composite flame-retardant tape according to claim 1, characterized in that: The thickness of the low-smoke halogen-free film is 0.2-0.5 mm, and the thickness of the flame-retardant alkali-free glass cloth tape is 0.3-0.5 mm.

7. The environmentally friendly low-smoke halogen-free composite flame-retardant tape according to claim 1, characterized in that: The thickness of the aluminum-plastic composite belt is 0.5 mm, and the thickness of the wear-resistant and scratch-resistant layer is 0.3 mm.

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