Flame-retardant wear-resistant linen yarn

Abstract

The utility model discloses a flame-retardant wear-resistant linen yarn which comprises a yarn body, and the yarn body comprises a core yarn, a first wrapping layer and a second wrapping layer. The core yarn is linen fiber yarn; the first wrapping layer comprises flame-retardant polyester fiber yarns and PBI fiber yarns; the flame-retardant polyester fiber yarn and the PBI fiber yarn are spirally wound outside the core yarn; the second wrapping layer comprises Basofil fiber yarns and ultra-high molecular weight polyethylene fiber yarns; the Basofil fiber yarn and the ultra-high molecular weight polyethylene fiber yarn are spirally wound outside the first wrapping layer. Based on the flame-retardant and wear-resistant linen yarn, the first wrapping layer and the second wrapping layer form a stable netted crossed binding wrapping structure outside the core yarn, cohesive force among fibers is enhanced, wear of the core yarn caused by external friction stress can be effectively relieved, and the wear resistance of the yarn and a woven fabric is greatly improved; the yarn body is composed of the flame-retardant yarn and the yarn attached with the flame-retardant finishing agent, and therefore the whole yarn has good flame-retardant performance.

Description

Technical Field

[0001] The utility model relates to the technical field of linen yarns, in particular to flame-retardant and wear-resistant linen yarns. Background Art

[0002] Flax is one of the earliest natural fibers used by humans, with a history of more than 10,000 years. Flax fiber is a rare natural fiber, accounting for only 1.5% of the total natural fiber. Because of its naturalness, simplicity, rarity, natural color and nobility, it is known as the "Queen of Natural Fibers". Flax fiber has many excellent properties. It absorbs moisture and dissipates heat, is health-promoting and antibacterial, anti-fouling and anti-static, and UV-resistant. However, the flame retardant properties of linen yarn made of linen fiber are usually poor. Most of the fibers in the linen yarn are in a spiral state. When repeatedly rubbed, the spiral fibers gradually become axial fibers, which are then worn off, resulting in poor wear resistance. Therefore, it is necessary to develop a flame-retardant and wear-resistant linen yarn. Utility Model Content

[0003] The utility model aims to provide a flame retardant and wear-resistant linen yarn, which aims to solve the problems raised in the above background technology.

[0004] To solve the above technical problems, the purpose of the utility model is achieved as follows: a flame retardant and wear-resistant linen yarn, comprising: a yarn body, the yarn body comprising a core yarn, a first wrapping layer and a second wrapping layer; the core yarn is a linen fiber yarn; the first wrapping layer comprises a flame retardant polyester fiber yarn and a PBI fiber yarn; the flame retardant polyester fiber yarn and the PBI fiber yarn are spirally wound on the outside of the core yarn; the second wrapping layer comprises a Basofil fiber yarn and an ultra-high molecular weight polyethylene fiber yarn; the Basofil fiber yarn and the ultra-high molecular weight polyethylene fiber yarn are spirally wound on the outside of the first wrapping layer.

[0005] On the basis of the above scheme and as a preferred scheme of the above scheme: the flame-retardant polyester fiber yarn and the PBI fiber yarn have the same twist and opposite twist directions; the flame-retardant polyester fiber yarn and the PBI fiber yarn are spirally wound around the outside of the core yarn in opposite directions.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the Basofil fiber yarn and the ultra-high molecular weight polyethylene fiber yarn have the same twist and opposite twist directions; the Basofil fiber yarn and the ultra-high molecular weight polyethylene fiber yarn are spirally wound on the outside of the first wrapping layer in opposite directions.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: a flame retardant finishing agent is attached to the surface of the flax fiber yarn.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a flame retardant finishing agent is attached to the surface of the ultra-high molecular weight polyethylene fiber yarn.

[0009] The beneficial effects of the utility model are as follows: based on the flame-retardant and wear-resistant linen yarn of the utility model, the first wrapping layer and the second wrapping layer form a structurally stable mesh cross-bundling wrapping structure on the outside of the core yarn, which enhances the cohesion between fibers, can greatly enhance the structural stability of the yarn body, and improve the mechanical properties of the yarn body. The unique mesh structure can effectively reduce the wear of the core yarn caused by external friction force, and greatly improves the wear resistance of the yarn and the woven fabric; the yarn body is composed of flame-retardant yarn and yarn with a flame-retardant finishing agent attached, so the yarn as a whole has good flame-retardant properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the cross-sectional structure of the flame-retardant and wear-resistant linen yarn involved in the utility model;

[0011] Figure 2 This is a schematic structural diagram of the flame-retardant and wear-resistant linen yarn involved in the utility model;

[0012] In the figure: 1-core yarn, 2-first wrapping layer, 3-second wrapping layer, 4-flame retardant polyester fiber yarn, 5-PBI fiber yarn, 6-Basofil fiber yarn, 7-ultra-high molecular weight polyethylene fiber yarn. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0014] Combination Figure 1 This embodiment is described in detail. A flame retardant and wear-resistant linen yarn comprises: a yarn body, the yarn body comprising a core yarn 1, a first wrapping layer 2 and a second wrapping layer 3; the core yarn 1 is a linen fiber yarn;

[0015] The first wrapping layer 2 includes flame-retardant polyester fiber yarn 4 and PBI fiber yarn 5; the flame-retardant polyester fiber yarn 4 and PBI fiber yarn 5 are spirally wound around the outside of the core yarn 1;

[0016] The second wrapping layer 3 includes Basofil fiber yarn 6 and ultra-high molecular weight polyethylene fiber yarn 7 ; the Basofil fiber yarn 6 and ultra-high molecular weight polyethylene fiber yarn 7 are spirally wound on the outside of the first wrapping layer 2 .

[0017] Flame retardant polyester fiber is made by adding phosphorus compounds or halogen-antimony composite flame retardants to the spinning melt, and then melt spinning and stretching. Flame retardant polyester fiber has excellent flame retardancy. When it encounters fire, it only melts but does not burn. Even after 35-50 washes, the flame retardant performance will not change.

[0018] PBI fiber, or polybenzimidazole fiber, is known as the "king of flame retardant" and is a typical heterocyclic polymer high temperature resistant material. PBI fiber has good textile processability, absorbency, flame retardancy, dyeability, thermal stability and chemical stability, and its limiting oxygen index reaches 38-46%, making it difficult to burn in the air.

[0019] Basofil heat-resistant and fire-resistant fiber is a flame-retardant fiber synthesized from melamine. It has excellent thermal stability, flame retardancy, and water hydrolysis, chemical corrosion resistance, and UV resistance. It is used in a variety of heat-insulating and fire-proof workplaces.

[0020] Ultra-high molecular weight polyethylene fiber is the strongest chemical fiber. Its main chain is a highly symmetrical methylene structure. The theoretical breaking strength is as high as 328cN / dtex. The actual breaking strength of mainstream products is 30-50cN / dtex. The initial modulus is greater than 900cN / dtex. It is a veritable high-strength and high-modulus fiber. In addition, its density is only 0.97g / cm3, which is lower than most synthetic fibers. It also has good chemical stability, impact resistance, cut resistance, and excellent wear resistance.

[0021] Furthermore, the flame-retardant polyester fiber yarn 4 and the PBI fiber yarn 5 have the same twist and opposite twist directions; the flame-retardant polyester fiber yarn 4 and the PBI fiber yarn 5 are spirally wound around the outside of the core yarn 1 in opposite directions.

[0022] Furthermore, the Basofil fiber yarn 6 and the ultra-high molecular weight polyethylene fiber yarn 7 have the same twist and opposite twist directions; the Basofil fiber yarn 6 and the ultra-high molecular weight polyethylene fiber yarn 7 are spirally wound on the outside of the first wrapping layer 2 in opposite directions.

[0023] The first wrapping layer 2 and the second wrapping layer 3 form a structurally stable mesh cross-bundling wrapping structure on the outside of the core yarn 1, which enhances the cohesion between fibers, can greatly enhance the structural stability of the yarn body, and improve the mechanical properties of the yarn body. Compared with single-filament wrapping, the double-filament twisted wrapping yarn has a tighter structure, and the unique mesh structure can effectively reduce the wear of the core yarn caused by external friction force, and greatly improves the wear resistance of the yarn and the woven fabric.

[0024] Furthermore, a flame retardant finishing agent is attached to the surface of the flax fiber yarn.

[0025] Furthermore, a flame retardant finishing agent is attached to the surface of the ultra-high molecular weight polyethylene fiber yarn 7.

[0026] The flame retardant finishing agent forms an insulating covering layer on the surface of the flax fiber yarn and the ultra-high molecular weight polyethylene fiber yarn 7, which not only blocks the oxygen supply, but also prevents the combustible gas from diffusing outward, giving the flax fiber yarn and the ultra-high molecular weight polyethylene fiber yarn 7 the ability to prevent the spread of flames, thereby achieving the purpose of flame retardancy.

[0027] 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 wear-resistant linen yarn, comprising: The yarn body is characterized in that the yarn body comprises a core yarn (1), a first wrapping layer (2) and a second wrapping layer (3); the core yarn (1) is a flax fiber yarn; The first wrapping layer (2) comprises flame-retardant polyester fiber yarn (4) and PBI fiber yarn (5); the flame-retardant polyester fiber yarn (4) and PBI fiber yarn (5) are spirally wound around the outside of the core yarn (1); The second wrapping layer (3) comprises Basofil fiber yarn (6) and ultra-high molecular weight polyethylene fiber yarn (7); the Basofil fiber yarn (6) and ultra-high molecular weight polyethylene fiber yarn (7) are spirally wound on the outside of the first wrapping layer (2).

2. The flame retardant and wear resistant linen yarn according to claim 1, characterized in that: The flame-retardant polyester fiber yarn (4) and the PBI fiber yarn (5) have the same twist and opposite twist directions; the flame-retardant polyester fiber yarn (4) and the PBI fiber yarn (5) are spirally wound around the outside of the core yarn (1) in opposite directions.

3. The flame retardant and wear resistant linen yarn according to claim 1, characterized in that: The Basofil fiber yarn (6) and the ultra-high molecular weight polyethylene fiber yarn (7) have the same twist and opposite twist directions; the Basofil fiber yarn (6) and the ultra-high molecular weight polyethylene fiber yarn (7) are spirally wound on the outside of the first wrapping layer (2) in opposite directions.

4. The flame retardant and wear resistant linen yarn according to claim 1, characterized in that: A flame retardant finishing agent is attached to the surface of the flax fiber yarn.

5. The flame retardant and wear resistant linen yarn according to claim 1, characterized in that: A flame retardant finishing agent is attached to the surface of the ultra-high molecular weight polyethylene fiber yarn (7).

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