High-strength fiber foaming wire as well as preparation method and application thereof

Abstract

The invention relates to the technical field of foaming wire rods, in particular to a high-strength fiber foaming wire rod and a preparation method and application thereof.The high-strength fiber foaming wire rod comprises a wire core and a foaming layer wrapping the outer surface of the wire core, a fiber wire serves as the wire core, the foaming layer is extruded through an extruder and wraps the surface of the fiber wire core, and the high-strength fiber foaming wire rod is obtained. A high-strength fiber foaming product prepared by weaving and forming the high-strength fiber foaming wire and performing hot pressing can replace an existing plastic injection molding part, and has the advantages of high strength, light weight, easiness in processing and the like.

Description

Technical Field

[0001] The invention relates to the technical field of foamed wire materials, and in particular to a high-strength fiber foamed wire material and a preparation method and application thereof. Background Art

[0002] Most of the existing plastic injection molded parts are plastic products produced by injection molding process, which are widely used in various fields, such as automobile manufacturing, electronic appliances, household goods, medical equipment, etc. The injection molding process uses an injection molding machine to inject molten plastic into the mold, and after cooling and solidification, it forms a product of the desired shape. Due to the following defects in the existing injection molding process: 1. Bubbles: caused by insufficient drying of the plastic or poor mold exhaust; 2. Warping deformation: caused by uneven cooling or improper mold design; 3. Weld marks: caused by the failure of the front ends of the two molten resins to fully merge; 4. Insufficient filling: The resin does not completely fill the cavity, resulting in product defects. These defects will affect the appearance, size and strength performance of the product. Therefore, it is necessary to develop a new high-strength fiber foam wire to replace the existing plastic injection molded parts after molding to solve the above technical problems. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a high-strength fiber foam wire. The high-strength fiber foam product obtained by weaving the wire into a shape and then hot pressing can replace the existing plastic injection molding parts and has the advantages of high strength, light weight and easy processing.

[0004] The object of the present invention can be achieved by the following technical scheme: a high-strength fiber foam wire, comprising a wire core and a foaming layer coated on the outer surface of the wire core, the wire core material is a fiber wire, and the raw materials for preparing the foaming layer include: in parts by weight, 5-15 parts of AC foaming agent, 0.4-0.8 parts of cross-linking agent, 0.2-0.8 parts of auxiliary agent, 5-10 parts of inorganic filler, and 73.4-89.4 parts of PE.

[0005] Preferably, the auxiliary agent is zinc oxide.

[0006] Preferably, the inorganic filler is barium sulfate.

[0007] The present invention provides a method for preparing a high-strength fiber foam wire material, comprising the following steps: S1, using the fiber line as the core, pulling the core into the extrusion die of the extruder head; S2, the raw materials for preparing the foaming layer AC foaming agent, crosslinking agent, auxiliary agent, inorganic filler, and PE are fully mixed in proportion, and after mixing, they are added to the extruder from the feeding port. Due to the rotation and pressure of the screw, the extrudate is pushed to the head of the extruder, and the extrudate is formed into the required size and shape through the extrusion die in the head and coated on the outer surface of the wire core to form an unfoamed wire with a fiber wire core; S3, pulling the unfoamed wire with the fiber core in step S2 into a tunnel furnace for foaming, cooling, pulling and winding after foaming, and obtaining a high-strength fiber foamed wire.

[0008] Preferably, the raw materials for preparing the foaming layer include: by weight, 7.5-12.5 parts of AC foaming agent, 0.5-0.7 parts of cross-linking agent, 0.35-0.65 parts of auxiliary agent, 6.25-8.75 parts of inorganic filler, and 77.4-85.4 parts of PE.

[0009] Preferably, in step S1, the wire core is preheated before being pulled into the extrusion die. Specifically, a preheater is used to preheat the wire core to remove moisture from the surface of the wire core to ensure extrusion quality.

[0010] Preferably, the extrusion temperature zones one to five of the extruder are 115°C±5°, 118°C±5°, 118°C±5°, 118°C±5°, and 118°C±5°, respectively.

[0011] Preferably, the foaming temperature of the tunnel furnace is 180°C±5° in zone 1.

[0012] Preferably, the foaming temperature of zone 2 of the tunnel furnace is 220°C±5°.

[0013] The present invention also provides an application of a high-strength fiber foam wire material for preparing a high-strength fiber foam product. The high-strength fiber foam product is obtained by weaving the high-strength fiber foam wire material into a shape and then hot pressing it.

[0014] The beneficial effects of the present invention are as follows: the high-strength fiber foam wire provided by the present invention uses a fiber wire as a wire core, and the extruded material is formed into a required size and shape by an extruder and coated on the outer surface of the wire core, and then foamed and cooled and formed by a tunnel furnace. It has the advantages of high strength and light weight. The high-strength fiber foam product obtained by weaving the high-strength fiber foam wire of the present invention and then hot pressing can replace existing plastic injection moldings, and has the advantages of high strength, light weight, and easy processing. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0016] Example 1 The high-strength fiber foam wire of this embodiment includes a wire core and a foam layer coated on the outer surface of the wire core. The wire core is made of fiber wire, and the raw materials for preparing the foam layer include: by weight, 5 parts of AC foaming agent, 0.4 parts of cross-linking agent, 0.2 parts of auxiliary agent, 5 parts of inorganic filler, and 73.4 parts of PE. Among them, the auxiliary agent is zinc oxide; the inorganic filler is barium sulfate.

[0017] The high-strength fiber foam wire material of this embodiment adopts the above-mentioned raw materials, and the preparation method includes the following steps: S1. Using the fiber wire as the wire core, the wire core is preheated before being pulled into the extrusion die. Specifically, a preheater is used to preheat the wire core to remove moisture from the surface of the wire core to ensure the extrusion quality, and then the wire core is pulled into the extrusion die of the extruder head; S2. The raw materials for preparing the foaming layer, AC foaming agent, crosslinking agent, auxiliary agent, inorganic filler and PE are fully mixed in proportion, and after mixing, they are added into the extruder from the feeding port. Due to the rotation and pressure of the screw, the extrudate is pushed to the head of the extruder, and the extrudate is formed into the required size and shape through the extrusion die in the head and coated on the outer surface of the wire core to form an unfoamed wire with a fiber wire core; wherein the extrusion temperature of the extruder is: zones 1 to 5 are 115°C ± 5°, 118°C ± 5°, 118°C ± 5°, 118°C ± 5°, 118°C ± 5°, respectively; S3, pulling the unfoamed wire with the fiber core in step S2 into a tunnel furnace for foaming, wherein the foaming temperature of the tunnel furnace is 180°C ± 5° in zone 1 and 220°C ± 5° in zone 2, cooling after foaming, pulling and winding, and obtaining a high-strength fiber foamed wire.

[0018] Example 2 The difference between this embodiment and embodiment 1 is that the raw materials for preparing the foaming layer include: by weight, 7.5 parts of AC foaming agent, 0.5 parts of cross-linking agent, 0.35 parts of auxiliary agent, 6.25 parts of inorganic filler, and 77.4 parts of PE, and the remaining raw materials and preparation method steps are the same as those in embodiment 1.

[0019] Example 3 The difference between this embodiment and embodiment 1 is that the raw materials for preparing the foaming layer include: by weight, 10 parts of AC foaming agent, 0.6 parts of cross-linking agent, 0.5 parts of auxiliary agent, 7.5 parts of inorganic filler, and 81.4 parts of PE, and the remaining raw materials and preparation method steps are the same as those in embodiment 1.

[0020] Example 4 The difference between this embodiment and embodiment 1 is that the raw materials for preparing the foaming layer include: by weight, 12.5 parts of AC foaming agent, 0.7 parts of cross-linking agent, 0.65 parts of auxiliary agent, 8.75 parts of inorganic filler, and 85.4 parts of PE, and the remaining raw materials and preparation method steps are the same as those in embodiment 1.

[0021] Example 5 The difference between this embodiment and embodiment 1 is that the raw materials for preparing the foaming layer include: by weight, 15 parts of AC foaming agent, 0.8 parts of cross-linking agent, 0.8 parts of auxiliary agent, 10 parts of inorganic filler, and 89.4 parts of PE, and the remaining raw materials and preparation method steps are the same as those in embodiment 1.

[0022] The raw material formula of the high-strength fiber foam wire in the above Examples 1-5 is as follows: The high-strength fiber foam wire of the present invention has the advantages of high tensile strength and light weight. The high-strength fiber foam product obtained by weaving and hot pressing the high-strength fiber foam wire of the present invention can replace the existing plastic injection molding parts. The high-strength fiber foam product has the advantages of high strength, light weight and easy processing.

[0023] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A high-strength fiber foam wire material, characterized in that: It includes a wire core and a foaming layer coated on the outer surface of the wire core. The wire core is made of fiber wire. The raw materials for preparing the foaming layer include: in parts by weight, 5-15 parts of AC foaming agent, 0.4-0.8 parts of cross-linking agent, 0.2-0.8 parts of auxiliary agent, 5-10 parts of inorganic filler, and 73.4-89.4 parts of PE.

2. The high-strength fiber foam wire material according to claim 1, characterized in that: The auxiliary agent is zinc oxide.

3. The high-strength fiber foam wire material according to claim 1, characterized in that: The inorganic filler is barium sulfate.

4. A method for preparing a high-strength fiber foam wire material according to any one of claims 1 to 3, characterized in that: The steps include: S1, using the fiber line as the core, pulling the core into the extrusion die of the extruder head; S2, the raw materials for preparing the foaming layer AC foaming agent, crosslinking agent, auxiliary agent, inorganic filler, and PE are fully mixed in proportion, and after mixing, they are added to the extruder from the feeding port. Due to the rotation and pressure of the screw, the extrudate is pushed to the head of the extruder, and the extrudate is formed into the required size and shape through the extrusion die in the head and coated on the outer surface of the wire core to form an unfoamed wire with a fiber wire core; S3, pulling the unfoamed wire with the fiber core in step S2 into a tunnel furnace for foaming, cooling, pulling and winding after foaming, and obtaining a high-strength fiber foamed wire.

5. The method for preparing a high-strength fiber foam wire material according to claim 4, characterized in that: The raw materials for preparing the foaming layer include: by weight, 7.5-12.5 parts of AC foaming agent, 0.5-0.7 parts of crosslinking agent, 0.35-0.65 parts of auxiliary agent, 6.25-8.75 parts of inorganic filler, and 77.4-85.4 parts of PE.

6. The method for preparing a high-strength fiber foam wire material according to claim 4, characterized in that: In step S1, the wire core is preheated before being pulled into the extrusion die. Specifically, a preheater is used to preheat the wire core to remove moisture from the surface of the wire core to ensure extrusion quality.

7. The method for preparing a high-strength fiber foam wire material according to claim 4, characterized in that: The extrusion temperatures of zones one to five of the extruder are 115°C±5°, 118°C±5°, 118°C±5°, 118°C±5°, and 118°C±5°, respectively.

8. The method for preparing a high-strength fiber foam wire material according to claim 4, characterized in that: The foaming temperature of the tunnel furnace is 180°C±5° in zone 1.

9. The method for preparing a high-strength fiber foam wire material according to claim 8, characterized in that: The foaming temperature of the tunnel furnace in zone 2 is 220°C±5°.

10. The use of a high-strength fiber foam wire material according to any one of claims 1 to 3, characterized in that: The invention is used for preparing high-strength fiber foam products, wherein the high-strength fiber foam products are obtained by weaving high-strength fiber foam wires and then hot pressing them.

Images