A fiber skeleton reinforced nylon wear plate

Abstract

The present invention discloses a fiber skeleton reinforced nylon wear plate, which comprises a fiber skeleton, a support part and a nylon matrix; wherein the fiber skeleton is a fiber cloth laminate, and the fiber cloth laminate is provided with a plurality of through holes; the support part is provided on one side of the fiber skeleton; and the nylon matrix is ​​coated on the fiber skeleton and the outer side of the support part. The beneficial effects of the present invention are: the fiber skeleton reinforced nylon wear plate enhances the local strength of the product, and effectively improves the problem that the existing cast nylon (MC nylon) plate structure is poorly stressed locally and prone to breakage.

Description

Technical Field

[0001] The invention relates to the technical field of wear plates, in particular to a fiber skeleton reinforced nylon wear plate. Background Art

[0002] Nylon wear plate is wear-resistant, light, self-lubricating, and can reduce friction and wear between iron parts. It is made by using alkaline substances as catalysts to make the molten raw materials under normal pressure, together with activators and other additives to make monomers to be polymerized, and then directly injected into a mold preheated to a certain temperature, so that the materials can quickly undergo polymerization reaction in the mold and condense into a tough solid embryo. After relevant process treatment, the predetermined plate is obtained. "Plastic replaces steel, excellent performance", and it has extremely wide applications. It has many unique properties such as light weight, high strength, self-lubrication, wear resistance, corrosion resistance, insulation, etc.

[0003] Therefore, nylon wear plates are usually installed at the main structural parts of general railway freight cars to reduce the wear of related components and protect the structural integrity and reliability of the main functional components of the train.

[0004] However, the existing nylon wear plates have the problem of poor local strength. When the product is subjected to large or repeated local forces, the stressed parts are prone to breakage, which reduces the service life of the nylon wear plates.

[0005] Therefore, how to provide a nylon wear plate that can improve the problem of easy breakage of existing nylon wear plates at stress-bearing locations is an important technical problem that those skilled in the art currently need to solve. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a fiber skeleton reinforced nylon wear plate, which includes a fiber skeleton, a support part and a nylon matrix; wherein,

[0007] The fiber skeleton is a fiber cloth laminate, and a plurality of through holes are provided on the fiber cloth laminate;

[0008] The support portion is arranged on one side of the fiber skeleton;

[0009] The nylon matrix is ​​coated on the fiber skeleton and the outer side of the supporting part.

[0010] Optionally, the fiber cloth laminate comprises multiple layers of fiber cloth, and the multiple layers of fiber cloth are formed into an integrated structure by bonding, molding or hot pressing.

[0011] Optionally, the fiber cloth laminate is in the shape of a flat plate or a curved surface.

[0012] Optionally, the diameter of the through hole is 5-20 mm.

[0013] Optionally, the cross-sectional area of ​​the through holes accounts for 50% of the total cross-sectional area of ​​the fiber cloth laminate.

[0014] Optionally, the fiber cloth laminate has a thickness less than or equal to 2 mm.

[0015] Optionally, the fiber skeleton reinforced nylon wear plate is a ∏-shaped structure or a flat plate structure.

[0016] Optionally, the nylon matrix is ​​a cast nylon matrix.

[0017] Optionally, the support portion is a cast nylon support portion.

[0018] Optionally, the support portion is one or more support blocks fixed to one side of the fiber skeleton.

[0019] Compared with the above background technology, the fiber skeleton reinforced nylon wear plate provided by the present invention has the following beneficial effects: the fiber skeleton reinforced nylon wear plate enhances the local strength of the product, effectively improving the problem of poor local stress and easy breakage of the existing cast nylon (MC nylon) plate structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A longitudinal cross-sectional view of a fiber skeleton reinforced nylon wear plate provided in a specific embodiment of the present invention.

[0022] In the figure,

[0023] 1-fiber cloth laminate; 2-through hole; 3-nylon matrix. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The core of the present invention is to provide a fiber skeleton reinforced nylon wear plate, which adopts a fiber reinforced structure containing a fiber cloth laminate 1 inside, which can improve the problem that the existing nylon wear plate is easy to break at the stress-bearing part.

[0029] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Please refer to Figure 1 , Figure 1 A longitudinal cross-sectional view of a fiber skeleton reinforced nylon wear plate provided in a specific embodiment of the present invention.

[0031] In a specific embodiment, the fiber skeleton reinforced nylon wear plate provided by the present invention comprises a fiber skeleton, a support part and a nylon matrix 3; wherein the fiber skeleton is a fiber cloth laminate 1, and the fiber cloth laminate 1 is provided with a plurality of through holes 2; the support part is arranged on one side of the fiber skeleton; the nylon matrix 3 is coated on the outside of the fiber skeleton and the support part. The nylon matrix 3 is an MC nylon matrix, and its raw material components are caprolactam and the like.

[0032] In a specific embodiment, the fiber skeleton reinforced nylon wear plate provided by the present invention, the fiber cloth laminate 1 includes multiple layers of fiber cloth, and the multiple layers of fiber cloth are formed into an integrated structure by processes such as bonding, molding or hot pressing, or can be integrally formed by other methods. The fiber cloth laminate 1 is flat or curved. The through hole 2 can be a circular through hole, the diameter of the circular through hole is 5-20mm, the cross-sectional area of ​​the through hole 2 accounts for 50% of the total cross-sectional area of ​​the fiber cloth laminate 1, and the thickness of the fiber cloth laminate 1 is less than or equal to 2mm.

[0033] In a specific embodiment, the fiber skeleton reinforced nylon wear plate provided by the present invention, the fiber cloth laminate 1 can be set at the easily broken part of the composite product to enhance the strength of the material, the area of ​​the fiber cloth laminate 1 accounts for 40% or more of the total area of ​​the fiber skeleton reinforced nylon wear plate, and the thickness of the fiber cloth laminate 1 accounts for 5% or more of the total thickness of the fiber skeleton reinforced nylon wear plate, but generally does not exceed 90%, and its specific thickness is designed according to product requirements. If the fiber cloth laminate 1 is too thick and the area is too large, the weight of the fiber skeleton reinforced nylon wear plate will increase.

[0034] In a specific embodiment, the fiber skeleton reinforced nylon wear plate provided by the present invention, the nylon matrix 3 is preferably an MC nylon matrix, and the supporting portion is one or more supporting blocks fixed to one side of the fiber skeleton. The effect is best when the material of the supporting block is the same as the material of the nylon matrix 3, that is, the material of the supporting block is preferably cast nylon.

[0035] In a specific embodiment, the fiber skeleton reinforced nylon wear plate provided by the present invention can be made into products of various shapes according to actual needs, such as ∏-shaped structures, flat plate structures or special-shaped products of other shapes.

[0036] Furthermore, the molding process of the fiber skeleton reinforced nylon wear plate can be one-time compression molding, or secondary processing molding after molding. The fiber skeleton inside the nylon matrix 3 strengthens the local strength of the composite material product, and is not easy to break when subjected to force.

[0037] In a specific embodiment, the fiber skeleton reinforced nylon wear plate provided by the present invention can be used as a wear plate for a hook tail frame support plate, a nylon wear plate for a coupler support seat, and a nylon wear plate for a coupler tail frame support beam.

[0038] In a specific embodiment, the fiber skeleton reinforced nylon wear plate provided by the present invention has the following preparation process:

[0039] 1. Preparation of fiber skeleton:

[0040] Multi-layer fiber cloth composite: Through bonding, molding or hot pressing processes, multiple layers of fiber cloth are composited to form a hard fiber cloth laminate 1.

[0041] Punching the fiber cloth laminate 1: drilling holes in the fiber cloth laminate 1 to form a hollow area.

[0042] In order to ensure that both sides of the fiber skeleton are covered by liquid MC nylon during the injection molding process, at least one support block is set on one side of the fiber skeleton. After the fiber skeleton is placed in the cavity of the mold, the support block props up the fiber skeleton to ensure that liquid MC nylon can flow between the fiber skeleton and the bottom surface of the mold. The material of the support block is preferably the same as that of the nylon matrix 3, such as MC nylon. After the molding process, the support block and the nylon matrix 3 are integrated, which does not affect the final strength of the product at the support block position.

[0043] 2. Compression molding:

[0044] Add caprolactam into the reaction kettle, heat it to 120-140°C, add catalyst and various additives when caprolactam becomes molten, and evacuate to -0.1MPa. The reaction time is 5-10 minutes.

[0045] The fiber skeleton is placed in a mold for preheating at a mold temperature of 145-160° C. The polyamide obtained by the reaction is poured into the mold, a co-catalyst is added, the mold is closed and pressurized for reaction for 5-20 minutes at a pressure of 5-20 MPa to compound the resin material with the fiber skeleton.

[0046] The fiber skeleton reinforced nylon wear plate provided by the present invention is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A fiber skeleton reinforced nylon wear plate, characterized in that: It includes a fiber skeleton, a support part and a nylon matrix; wherein, The fiber skeleton is a fiber cloth laminate, and a plurality of through holes are provided on the fiber cloth laminate; The support portion is arranged on one side of the fiber skeleton; The nylon matrix is ​​coated on the fiber skeleton and the outer side of the support part; Wherein, the fiber cloth laminate comprises multiple layers of fiber cloth, and the multiple layers of fiber cloth are formed into an integrated structure by bonding, molding or hot pressing; Among them, the fiber cloth laminate is arranged at the easily broken part of the composite product, and the area of ​​the fiber cloth laminate accounts for 40% and more of the total area of ​​the fiber skeleton reinforced nylon wear plate; the thickness of the fiber cloth laminate accounts for between 5% and 90% of the total thickness of the fiber skeleton reinforced nylon wear plate.

2. The fiber skeleton reinforced nylon wear plate according to claim 1, characterized in that: The fiber cloth laminate is in the shape of a flat plate or a curved surface.

3. The fiber skeleton reinforced nylon wear plate according to claim 1, characterized in that: The diameter of the through hole is 5-20 mm.

4. The fiber skeleton reinforced nylon wear plate according to claim 1, characterized in that: The cross-sectional area of ​​the through holes accounts for 50% of the total cross-sectional area of ​​the fiber cloth laminate.

5. The fiber skeleton reinforced nylon wear plate according to claim 1, characterized in that: The thickness of the fiber cloth laminate is less than or equal to 2 mm.

6. The fiber skeleton reinforced nylon wear plate according to claim 1, characterized in that: The fiber skeleton reinforced nylon wear plate is a ∏-shaped structure or a flat plate structure.

7. The fiber skeleton reinforced nylon wear plate according to claim 1, characterized in that: The nylon matrix is ​​a cast nylon matrix.

8. The fiber skeleton reinforced nylon wear plate according to claim 1, characterized in that: The support portion is a cast nylon support portion.

9. The fiber skeleton reinforced nylon wear plate according to claim 1 or 8, characterized in that: The support portion is one or more support blocks fixedly arranged on one side of the fiber skeleton.

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