Flame-retardant waterproof coated fabric

Abstract

The utility model discloses flame-retardant waterproof coating cloth which comprises a base cloth layer, a plane three-way fabric is compounded on one side of the base cloth layer, and a reinforced fabric layer is arranged on the other side of the base cloth layer. A PVDF (Polyvinylidene Fluoride) coating is arranged on one side, far away from the base cloth layer, of the planar three-way fabric, and a PTFE (Polytetrafluoroethylene) coating is arranged on one side, far away from the base cloth layer 1, of the reinforced fabric layer; and the base cloth layer is a warp-lined weft-lined warp knitted fabric which is knitted by polyester filament yarns. According to the flame-retardant waterproof coating cloth, the plane three-way fabric and the warp-lining weft-warp-lining knitted fabric are adopted, so that the coating cloth has good conformality and dimensional stability, and has good tear resistance. And the PTFE coating and the PVDF coating can achieve good flame-retardant and waterproof effects. The arrangement of the reinforced fabric layer can improve the strength of the coated fabric and prolong the service life of the coated fabric.

Description

Technical Field

[0001] The utility model relates to a flame retardant and waterproof coated cloth, belonging to the technical field of coated fabrics. Background Art

[0002] Tarpaulin is a waterproof material with high strength, good toughness and a certain degree of softness. It is usually used for automobile transportation, covering open-air warehouses or outdoor tents. Tarpaulin needs to be connected with ropes when in use, which will put forward higher requirements on the shape retention and tear resistance of tarpaulin. In addition, in order to cope with rainy weather, tarpaulin for transportation, warehouses or tents needs to have good waterproof effect, and also puts forward requirements on the flame retardant performance of tarpaulin. How to prepare a coated cloth with flame retardant and waterproof effect as tarpaulin has become a problem to be solved. Utility Model Content

[0003] The utility model aims to provide a flame retardant and waterproof coated cloth, which has flame retardant and waterproof effects.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0005] The utility model relates to a flame retardant and waterproof coated cloth, comprising a base cloth layer, one side of the base cloth layer is composited with a planar three-dimensional fabric, and the other side is provided with a reinforced fabric layer; a PVDF coating is arranged on the side of the planar three-dimensional fabric away from the base cloth layer, and a PTFE coating is arranged on the side of the reinforced fabric layer away from the base cloth layer 1; the base cloth layer is a warp-lined and weft-lined warp-knitted fabric woven with polyester filaments.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the planar three-way fabric is a three-way fabric woven by the first yarn, the second yarn and the third yarn at an angle of 60°.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the first yarn, the second yarn and the third yarn are all PTFE split film filaments and Kevlar filaments.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the reinforced fabric layer is interwoven with high-strength parallel-twisted yarns as warp and weft yarns, and the high-strength parallel-twisted yarns include parallel-twisted high-strength polyester filaments and PTFE split film filaments.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: an imide fiber / TiO2-SiO2 composite aerogel layer is arranged between the base fabric layer and the planar three-dimensional fabric.

[0010] The beneficial effects of the utility model are as follows: the flame retardant and waterproof coated cloth of the utility model adopts a planar tri-directional fabric and a warp-lined and weft-lined warp knitted fabric, which can make the coated cloth have good shape retention and dimensional stability, and good tear resistance. Moreover, the PTFE coating and the PVDF coating can both have good flame retardant and waterproof effects. The setting of the reinforced fabric layer can improve the strength of the coated cloth and increase its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of a waterproof coating cloth involved in Embodiment 1;

[0012] Figure 2 is a schematic diagram of a planar three-dimensional fabric structure involved in Example 1;

[0013] Figure 3 It is a schematic structural diagram of the waterproof coating cloth involved in the second embodiment.

[0014] The markings in the figure are as follows: 1-base fabric layer; 2-reinforced fabric layer; 3-reinforced fabric layer; 4-PVDF coating; 5-PTFE coating; 6-imide fiber / TiO2-SiO2 composite aerogel layer. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] Embodiment 1

[0017] Combination Figure 1 and Figure 3 The flame retardant and waterproof coated fabric involved in this embodiment comprises a base fabric layer 1, one side of the base fabric layer 1 is composited with a planar three-dimensional fabric 2, and the other side is composited with a reinforced fabric layer 3; the side of the planar three-dimensional fabric 2 away from the base fabric layer 1 is provided with a PVDF coating 4, and the side of the reinforced fabric layer 3 away from the base fabric layer 1 is provided with a PTFE coating 5.

[0018] The base fabric layer 1 is a warp-lined and weft-lined warp knitted fabric woven with polyester filaments, in which yarns not involved in loop formation are inserted between the coils and extension lines of the warp knitted fabric in the warp and weft directions, which can improve the dimensional stability of the warp knitted fabric. The yarn used in the base fabric layer is high-strength flame-retardant polyester filaments.

[0019] The planar three-dimensional fabric 2 is a three-dimensional fabric woven by the first yarn 21, the second yarn 22 and the third yarn 23 at an angle of 60°. Conventional fabrics are generally interwoven by mutually perpendicular warp yarns and weft yarns. This orthogonal structure of the planar fabric can only effectively transfer loads in the direction parallel to the yarn. When the force direction is not along the warp or weft arrangement direction, the ability of the fabric to resist deformation and damage is greatly reduced, and it is difficult to meet the mechanical properties requirements of textiles. The three-dimensional fabric is formed by the first yarn 21, the second yarn 22, and the third yarn 23 interwoven at a 60° direction. The bearing capacity of the fabric in all directions is relatively uniform. Regardless of whether the force direction is along the yarn direction, it is not easy to cause the phenomenon of local stress concentration in the planar two-dimensional fabric causing the yarn to break. It has good dimensional stability and strong resistance to deformation and damage.

[0020] Furthermore, the first yarn 21, the second yarn 22 and the third yarn 23 are all PTFE split film filaments and Kevlar filaments, which have good flame retardant effects while improving tear resistance. Moreover, the PTFE split film filaments have good thermal stability when used, have good shape retention at high temperatures, and are not easy to deform.

[0021] Furthermore, the reinforced fabric layer 3 is interwoven with high-strength parallel-twisted yarns as warp and weft yarns, and the high-strength parallel-twisted yarns include parallel-twisted high-strength polyester filaments and PTFE split film filaments, which can improve the strength of the reinforced fabric layer, thereby improving the strength of the flame-retardant and waterproof coating fabric involved in this embodiment.

[0022] The PVDF coating 4 and the PTFE coating 5 can not only provide the coated cloth with a waterproof effect, but also have a good flame retardant effect due to the characteristics of their own materials, and can provide protection for the covered articles.

[0023] Embodiment 2

[0024] Combination Figure 3 , this embodiment is described in detail. The flame retardant and waterproof coating cloth involved in this embodiment is different from the embodiment 1 in that an imide fiber / TiO2-SiO2 composite aerogel layer 6 is provided between the base fabric layer 1 and the planar three-dimensional fabric 2. The heat-blocking ability of the flame retardant and waterproof coating cloth involved in this embodiment can be improved, and the coating can provide heat-insulating performance for the covered articles when used as a tarpaulin to cover the articles.

[0025] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A flame retardant and waterproof coated cloth, characterized in that: The invention comprises a base fabric layer (1), one side of the base fabric layer (1) is composited with a planar three-dimensional fabric (2), and the other side is composited with a reinforcing fabric layer (3); a PVDF coating (4) is provided on the side of the planar three-dimensional fabric (2) away from the base fabric layer (1), and a PTFE coating (5) is provided on the side of the reinforcing fabric layer (3) away from the base fabric layer (1); the base fabric layer (1) is a warp-lined and weft-lined warp knitted fabric woven with polyester filaments.

2. The flame retardant and waterproof coated cloth according to claim 1, characterized in that: The planar three-dimensional fabric (2) is a three-dimensional fabric woven from a first yarn (21), a second yarn (22) and a third yarn (23) at an angle of 60°.

3. The flame retardant and waterproof coated cloth according to claim 2, characterized in that: The first yarn (21), the second yarn (22) and the third yarn (23) are all PTFE split film filaments and Kevlar filaments.

4. The flame retardant and waterproof coated cloth according to claim 1, characterized in that: The reinforced fabric layer (3) is formed by interweaving high-strength parallel-twisted yarns as warp and weft yarns, and the high-strength parallel-twisted yarns include parallel-twisted high-strength polyester filaments and PTFE split film filaments.

5. The flame retardant and waterproof coated cloth according to claim 1, characterized in that: An imide fiber / TiO2-SiO2 composite aerogel layer (6) is provided between the base fabric layer (1) and the planar three-dimensional fabric (2).

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