Table tennis racket bottom plate containing fiber interlayer with surface microscopic coating and method of making the same

A table tennis racket and fiber layer technology, applied to rackets, sports accessories, etc., can solve problems such as high hardness and high elasticity, and achieve the effects of improving toughness, uniformity of force, and toughness of the bottom plate

Active Publication Date: 2022-07-05
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to avoid the deficiencies of the prior art, the present invention proposes a table tennis racket bottom plate containing a fiber interlayer with a surface microscopic coating and a manufacturing method thereof, so as to overcome the defects of high hardness and excessive elasticity of the bottom plate containing a carbon fiber layer

Method used

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  • Table tennis racket bottom plate containing fiber interlayer with surface microscopic coating and method of making the same
  • Table tennis racket bottom plate containing fiber interlayer with surface microscopic coating and method of making the same
  • Table tennis racket bottom plate containing fiber interlayer with surface microscopic coating and method of making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In Example 1, the core material is paulownia with a thickness of 3.5 mm, the strength material is ayos wood with a thickness of 0.8 mm, and the surface material is kerto wood with a thickness of 0.5 mm; each bundle contains 1000 carbon fiber monofilaments. The two-dimensional plain weave woven from fiber bundles is used as a fiber interlayer. The surface of each fiber in the fiber interlayer is covered with a pyrolytic carbon layer with a thickness of 220-250 nanometers, and the thickness of a single-layer fiber interlayer is 0.16 mm. The table tennis racket bottom plate prepared in this embodiment conforms to the standard of the International Table Tennis Federation for the table tennis racket bottom plate for competition.

[0036] For microscopic coatings using pyrolytic carbon materials, the fiber layer is placed in a chemical vapor infiltration equipment, and a mixed gas of propylene, natural gas and hydrogen is introduced. 60h.

Embodiment 2

[0037] In Example 2, the core material is Ayous wood with a thickness of 4 mm, the strength material is Ayous wood with a thickness of 0.7 mm, and the surface material is Limba wood with a thickness of 0.5 mm; each bundle contains 1000 carbon fiber sheets. The two-dimensional plain cloth woven from the fiber bundles of the silk is used as the fiber interlayer, and the surface of each fiber in the fiber interlayer is covered with a boron nitride layer with a thickness of 500-650 nanometers, and the thickness of the single-layer fiber interlayer is 0.18 mm. The table tennis racket bottom plate prepared in this embodiment conforms to the standard of the International Table Tennis Federation for the table tennis racket bottom plate for competition.

[0038] For the microscopic coating using boron nitride material, the fiber layer is placed in the chemical vapor infiltration equipment, and the mixed gas of ammonia, boron chloride and hydrogen is introduced. 50~90h.

[0039] The ma...

Embodiment 3

[0051] Examples 3 and 4 are: the strength material layer of Ayous wood is not used, and the materials containing continuous ceramic fibers are bonded between the core material and the face material.

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Abstract

The invention relates to a table tennis racket bottom plate containing a fiber interlayer with a surface microscopic coating and a manufacturing method. A fiber interlayer with a surface microscopic coating is sandwiched between the wood slabs of the table tennis racket bottom plate. The material of the fiber can be carbon, silicon carbide, silicon nitride, alumina, aluminum silicate, mullite, etc.; the fiber layer can be made of one or more of continuous fibers, chopped fibers, and whiskers. combination; the surface microscopic coating material can be a combination of one or more of pyrolytic carbon, graphitized pyrolytic carbon, and boron nitride; the thickness of the surface microscopic coating ranges from 50 nanometers to 1 micrometer between. The invention overcomes the structural limitations and deficiencies of the multi-layer wood chip glued bottom plate and the carbon fiber and organic fiber interlayer bottom plate, and has the effects of significantly increasing the optimal hitting area of ​​the bottom plate, improving the toughness of the bottom plate and improving the hitting feel.

Description

technical field [0001] The invention belongs to the technical field of table tennis sports equipment, and relates to a table tennis racket bottom plate containing a fiber interlayer with a surface microscopic coating and a manufacturing method. Background technique [0002] Table tennis rackets are mostly composed of three parts: the bottom plate, the rubber and the sponge. The table tennis sole is an important part of the table tennis racket. The conventional bottom plate structure is made of several layers of wood veneer, which are made by gluing process. The number of layers, material and thickness of the wood chips used determine the comprehensive performance of the bottom plate, such as ball speed, rotation, control, weight and thickness and other parameters. [0003] In October 2000, the ITTF adopted a 40mm diameter table tennis ball (diameter range of 39.5-40.5mm) instead of a 38mm diameter table tennis ball. mm), the diameter of the table tennis ball is increasing,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63B59/42A63B60/00A63B102/16
CPCA63B59/42A63B60/00A63B2102/16
Inventor 刘持栋阴甜甜成来飞刘小冲何山
Owner NORTHWESTERN POLYTECHNICAL UNIV
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