Flame-retardant ultrahigh molecular weight polyethylene composite fiber

Abstract

The utility model discloses a kind of flame-retardant ultrahigh molecular weight polyethylene composite fibers, it includes: hollow fiber core body, ultrahigh molecular weight polyethylene fiber bundle and non-combustible fiber monomer, the ultrahigh molecular weight polyethylene fiber bundle includes several annular array distribution in the outside of hollow fiber core body ultrahigh molecular weight polyethylene fiber monomer, the hollow fiber core body outer wall and inner cavity are provided with flame retardant, the non-combustible fiber monomer spiral winding is arranged in the outside of ultrahigh molecular weight polyethylene fiber bundle.The utility model flame-retardant ultrahigh molecular weight polyethylene composite fiber, carry out ultrahigh molecular weight polyethylene fiber bundle internal and external flame-retardant protection, greatly promote the flame-retardant property, ensure the mechanical property of ultrahigh molecular weight polyethylene fiber bundle.

Description

Technical Field

[0001] This utility model relates to the field of polyethylene composite fiber technology, and in particular to a flame-retardant ultra-high molecular weight polyethylene composite fiber. Background Technology

[0002] Ultra-high molecular weight polyethylene fiber has a low density, allowing it to float on water. It also has high strength, good impact and cut resistance, and good abrasion and chemical corrosion resistance. It is widely used in ropes, protective clothing, helmets, shields, and partitions.

[0003] Although ultra-high molecular weight polyethylene (UHMWPE) fibers possess excellent mechanical properties, their flame retardancy is relatively poor. Current technology allows for the preparation of flame-retardant UHMWPE fibers by adding flame retardants to the spinning solution, achieving good flame retardant effects. However, the mechanical properties are negatively impacted by the flame retardants, necessitating improvement. Utility Model Content

[0004] The purpose of this invention is to provide a flame-retardant ultra-high molecular weight polyethylene composite fiber, which improves the flame retardancy of the composite fiber and ensures excellent mechanical properties.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A flame-retardant ultra-high molecular weight polyethylene composite fiber includes: a hollow fiber core, an ultra-high molecular weight polyethylene fiber bundle, and non-combustible fiber monomers. The ultra-high molecular weight polyethylene fiber bundle includes several ultra-high molecular weight polyethylene fiber monomers arranged in a ring array on the outside of the hollow fiber core. Flame retardants are disposed in the outer wall and inner cavity of the hollow fiber core. The non-combustible fiber monomers are spirally wound on the outside of the ultra-high molecular weight polyethylene fiber bundle.

[0007] The hollow fiber core has several impregnation holes spaced apart on its side, which connect the outer wall of the hollow fiber core to the inner cavity.

[0008] The non-combustible fiber monomer is made of flame-retardant glass fiber.

[0009] The non-combustible fiber monomer is provided with a flame-retardant adhesive layer on its outer side.

[0010] The flame-retardant adhesive layer is made of halogen-free flame-retardant flexible polyurethane adhesive.

[0011] The hollow fiber core is made of flame-retardant polyester hollow fiber.

[0012] The beneficial effects of this utility model are as follows: A flame-retardant ultra-high molecular weight polyethylene composite fiber is provided with a flame-retardant adhesive layer and non-combustible fiber monomers on the outside to provide external flame-retardant protection for the ultra-high molecular weight polyethylene fiber bundle. The inner side of the ultra-high molecular weight polyethylene fiber bundle is protected by a hollow fiber core with flame retardants in the outer wall and inner cavity, which greatly improves the flame-retardant performance. This helps to reduce or eliminate the need to add flame retardants to the spinning solution of ultra-high molecular weight polyethylene fiber monomers, thereby ensuring that the ultra-high molecular weight polyethylene fiber bundle has better mechanical properties. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 Left view of the hollow fiber core in the image. Detailed Implementation

[0015] The following is combined with Figures 1-2 The technical solution of this utility model will be further illustrated through specific embodiments.

[0016] like Figure 1 The flame-retardant ultra-high molecular weight polyethylene composite fiber shown includes: a hollow fiber core 2, an ultra-high molecular weight polyethylene fiber bundle 1, and a non-combustible fiber monomer 4. The ultra-high molecular weight polyethylene fiber bundle 1 includes several ultra-high molecular weight polyethylene fiber monomers 11 arranged in a ring array on the outside of the hollow fiber core 2. The ultra-high molecular weight polyethylene fiber monomers 11 have high strength, and the overall mechanical properties are ensured by multiple ultra-high molecular weight polyethylene fiber monomers 11.

[0017] In this embodiment, the hollow fiber core 2 is made of polyester flame-retardant hollow fiber. The polyester flame-retardant hollow fiber is treated with polyester flame retardant during production, which can improve its flame-retardant performance.

[0018] Flame retardant 3 is disposed in the outer wall and inner cavity of the hollow fiber core 2, such as... Figure 2 As shown, the hollow fiber core 2 has several impregnation holes 21 spaced apart on its side, connecting the outer wall and the inner cavity of the hollow fiber core 2. During the production process, the hollow fiber core 2 is placed in a liquid flame retardant. The impregnation holes 21 are used to cover the outer wall of the hollow fiber core 2 and fill the inner cavity with the flame retardant. After the flame retardant is cured, the dispersion effect of the flame retardant 3 is improved, and the blind area of ​​the coverage is reduced.

[0019] The non-combustible fiber monomer 4 is spirally wound onto the outside of the ultra-high molecular weight polyethylene fiber bundle 1. The non-combustible fiber monomer 4 prevents open flames from contacting the ultra-high molecular weight polyethylene fiber bundle 1, thereby achieving flame-retardant protection. In this embodiment, the non-combustible fiber monomer 4 is made of flame-retardant glass fiber, which has good high-temperature resistance.

[0020] like Figure 1 As shown, a flame-retardant adhesive layer 5 is provided on the outer side of the non-combustible fiber monomer 4. The flame-retardant adhesive layer 5 fixes the non-combustible fiber monomer 4, preventing it from loosening and ensuring the overall smoothness and roundness of the outer wall. In this embodiment, the flame-retardant adhesive layer 5 is made of halogen-free flame-retardant flexible polyurethane adhesive, which has good flame retardancy and does not affect the bending of the composite fiber.

[0021] In addition, the halogen-free flame-retardant flexible polyurethane adhesive can penetrate into the gaps of the ultra-high molecular weight polyethylene fiber bundle 1 during construction, improving the connection stability between the ultra-high molecular weight polyethylene fiber bundle 1 and the non-combustible fiber monomer 4, increasing the uniformity of the output of multiple ultra-high molecular weight polyethylene fiber monomers 11 in the ultra-high molecular weight polyethylene fiber bundle 1, and resulting in good tensile strength.

[0022] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A flame-retardant ultra-high molecular weight polyethylene composite fiber, characterized in that, include: The product comprises a hollow fiber core, ultra-high molecular weight polyethylene (UHMWPE) fiber bundles, and non-flammable fiber monomers. The UHMWPE fiber bundles include several UHMWPE fiber monomers arranged in a ring array on the outside of the hollow fiber core. Flame retardants are disposed on the outer wall and inner cavity of the hollow fiber core. The non-flammable fiber monomers are spirally wound on the outside of the UHMWPE fiber bundles.

2. The flame-retardant ultra-high molecular weight polyethylene composite fiber according to claim 1, characterized in that, The hollow fiber core has several impregnation holes spaced apart on its side, connecting the outer wall of the hollow fiber core to the inner cavity.

3. The flame-retardant ultra-high molecular weight polyethylene composite fiber according to claim 1, characterized in that, The non-combustible fiber monomer is made of flame-retardant glass fiber.

4. The flame-retardant ultra-high molecular weight polyethylene composite fiber according to claim 1, characterized in that, A flame-retardant adhesive layer is provided on the outside of the non-combustible fiber monomer.

5. The flame-retardant ultra-high molecular weight polyethylene composite fiber according to claim 4, characterized in that, The flame-retardant adhesive layer is made of halogen-free flame-retardant flexible polyurethane adhesive.

6. The flame-retardant ultra-high molecular weight polyethylene composite fiber according to claim 1, characterized in that, The hollow fiber core is made of flame-retardant polyester hollow fiber.

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