Cutting-resistant polyethylene fiber

Abstract

The invention relates to the field of polyethylene fibers, in particular to a cutting-resistant polyethylene fiber. By selecting the combination of the ultra-high molecular weight polyethylene powder, the carbon fibers and the nano silicon dioxide and selecting the proportion, the cutting resistance of the product can be well ensured, and the carbon fibers can remarkably improve the tensile strength, bending strength and rigidity of the material and reduce the thermal expansion coefficient of the product at the same time; and the nano silicon dioxide can improve the surface smoothness, hardness and wear resistance of the product and enhance the overall performance of the material. In addition, the additive and assistant system disclosed by the invention is also obtained through repeated experiments, and the cutting resistance of the product is not influenced.

Description

Technical Field

[0001] The present invention relates to the field of polyethylene fibers, and more particularly to a cut-resistant polyethylene fiber. Background Art

[0002] Polyethylene fiber refers to a fiber material obtained by melt spinning polyethylene, including staple fibers and filaments. The mechanical strength of this fiber can be adjusted through spinning process parameters, and the wet strength and elongation are the same as those in the dry state. Polyethylene fiber has the advantages of high strength, low density, good insulation, etc., but its low heat load capacity and cold creep limit its applications, and it is mainly used in the production of various industrial textiles, especially filter materials, tarpaulins, and mesh belts.

[0003] In view of its main application in the textile field, the anti-cutting function is particularly important. Summary of the Invention

[0004] The present invention aims to provide a cut-resistant polyethylene fiber, and the specific solution is as follows: A cut-resistant polyethylene fiber, characterized by comprising the following components: antioxidant 0.1 - 0.5, light stabilizer 0.2 - 0.8, first lubricant 0.3 - 1, antioxidant 0.1 - 0.3, second lubricant 0.2 - 0.5, ultraviolet absorber 0.1 - 0.2, carbon fiber 3 - 8, nano-silica 2 - 5, ultra-high molecular weight polyethylene powder 83.7 - 97; the antioxidant, light stabilizer and first lubricant constitute additives, the antioxidant, second lubricant and ultraviolet absorber constitute an auxiliary agent system, and the carbon fiber and silica constitute a filling and reinforcing material.

[0005] The antioxidant is a hindered phenol antioxidant, which can prevent the degradation of polyethylene due to oxidation during processing and use, and improve the stability and service life of the fiber.

[0006] The light stabilizer is an ultraviolet absorber or a hindered amine light stabilizer, which can effectively absorb or quench ultraviolet light and prevent the fiber from aging due to light exposure in the outdoor environment.

[0007] The first lubricant is a fatty acid ester lubricant, which can improve the fluidity and demoulding property of the fiber during processing, reduce friction, and improve production efficiency and fiber quality.

[0008] The antioxidant is antioxidant 1010, which can effectively inhibit the oxidative degradation of the product during processing and use and extend the service life.

[0009] The second lubricant is calcium stearate, which can improve the processing fluidity, reduce the internal friction during processing, and prevent the material from adhering to the processing equipment.

[0010] The ultraviolet absorber is UV-531, which can improve the ultraviolet resistance of the product and prevent aging, discoloration and performance degradation due to ultraviolet irradiation during outdoor use.

[0011] The average molecular weight of the ultra-high molecular weight polyethylene powder is 5 million - 8 million.

[0012] In the present invention, the selection of the combination and ratio of ultra-high molecular weight polyethylene powder, carbon fiber and nano-silica can well ensure the cut resistance of the product. The carbon fiber can significantly improve the tensile strength, bending strength and rigidity of the material, while reducing the thermal expansion coefficient of the product. The nano-silica can improve the surface finish, hardness and wear resistance of the product, enhancing the overall performance of the material. In addition, the additive and auxiliary agent system of this application is also obtained through repeated experiments and can not affect the cut resistance of the product. Detailed implementation mode

[0013] A cut-resistant polyethylene fiber comprises the following components: antioxidant 0.3, light stabilizer 0.5, first lubricant 0.6, antioxidant 0.2, second lubricant 0.3, ultraviolet absorber 0.15, carbon fiber 6, nano-silica 4, ultra-high molecular weight polyethylene powder 87.95; the antioxidant, light stabilizer and first lubricant constitute the additive, and the antioxidant, second lubricant and ultraviolet absorber constitute the auxiliary agent system. The carbon fiber and silica constitute the filling and reinforcing material.

[0014] Additive Antioxidant: Select a hindered phenol antioxidant, which can prevent the degradation of polyethylene due to oxidation during processing and use, and improve the stability and service life of the fiber.

[0015] Light stabilizer: Select an ultraviolet absorber or a hindered amine light stabilizer, which can effectively absorb or quench ultraviolet rays and prevent the fiber from aging due to light in the outdoor environment.

[0016] Lubricant: Select a fatty acid ester lubricant, which can improve the fluidity and demoulding property of the fiber during processing, reduce friction, and improve production efficiency and fiber quality.

[0017] Auxiliary agent system Antioxidant: Select antioxidant 1010, which can effectively inhibit the oxidative degradation of the product during processing and use and extend the service life.

[0018] Lubricant: Select calcium stearate, which can improve the processing fluidity, reduce the internal friction during processing, and prevent the material from adhering in the processing equipment.

[0019] Ultraviolet absorber: Select UV-531, which can improve the ultraviolet resistance of the product and prevent aging, discoloration, and performance degradation caused by ultraviolet irradiation during outdoor use.

[0020] The average molecular weight of ultra-high molecular weight polyethylene (UHMWPE) powder is 5 million - 8 million.

[0021] The preparation method is as follows: 1. Mixing and stirring: Add UHMWPE powder and various other above-mentioned materials into a high-speed mixer, and conduct sufficient mixing and stirring to make them evenly dispersed in the UHMWPE powder.

[0022] 2. Spinning solution preparation: Add the mixed materials into a solvent, and dissolve them under stirring conditions to form a uniform spinning solution.

[0023] 3. Spinning: Adopt the gel spinning method, extrude the spinning solution through a spinneret, and enter the coagulation bath for solidification and molding to form primary fibers.

[0024] 4. Drawing: Conduct multi-stage drawing on the primary fibers. The drawing ratio is usually between several times and dozens of times. Through drawing, the molecular chains of the fibers can be oriented and arranged, improving the strength and modulus of the fibers.

[0025] 5. Heat treatment: Conduct heat treatment on the drawn fibers and keep them at a certain temperature to eliminate the internal stress of the fibers and improve the crystallinity and stability of the fibers.

[0026] 6. Surface treatment: In order to improve the surface properties of the fibers, such as wear resistance and antistatic properties, the fibers can be subjected to surface treatment, such as coating treatment, plasma treatment, etc.

[0027] 7. Winding and forming: Wind the treated fibers on a bobbin to form yarns of a certain specification. According to needs, subsequent processing such as twisting and weaving can also be performed on the yarns to make diamond yarn products with different structures and uses.

[0028] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cut-resistant polyethylene fiber, characterized in that, It comprises the following components: antioxidant 0.1 - 0.5, light stabilizer 0.2 - 0.8, first lubricant 0.3 - 1, antioxidant 0.1 - 0.3, second lubricant 0.2 - 0.5, ultraviolet absorber 0.1 - 0.2, carbon fiber 3 - 8, nano-silica 2 - 5, ultra-high molecular weight polyethylene powder 83.7 - 97; the antioxidant, light stabilizer and first lubricant constitute additives, the antioxidant, second lubricant and ultraviolet absorber constitute an auxiliary system, and the carbon fiber and silica constitute a filler reinforcing material.

2. The cut-resistant polyethylene fiber according to claim 1, characterized in that: The antioxidant is a hindered phenol antioxidant.

3. A cut-resistant polyethylene fiber according to claim 1, characterized in that: The light stabilizer is an ultraviolet absorber or a hindered amine light stabilizer.

4. The cut-resistant polyethylene fiber according to claim 1, characterized in that: The first lubricant is a fatty acid ester lubricant.

5. The cut-resistant polyethylene fiber according to claim 1, characterized in that: The antioxidant is antioxidant 1010.

6. The cut-resistant polyethylene fiber according to claim 1, wherein: The second lubricant is calcium stearate.

7. The cut-resistant polyethylene fiber according to claim 1, characterized in that: The ultraviolet absorber is UV - 531.

8. The cut-resistant polyethylene fiber according to claim 1, characterized in that: The average molecular weight of the ultra-high molecular weight polyethylene powder is 5 million - 8 million.