CN1186106C

CN1186106C - Table tennis bat base board containing ceramic material and its making process

Info

Publication number: CN1186106C
Application number: CNB021291985A
Authority: CN
Inventors: 张建平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-20
Filing date: 2002-08-20
Publication date: 2005-01-26
Anticipated expiration: 2022-08-20
Also published as: CN1398655A

Abstract

The present invention belongs to a table tennis bat containing ceramic materials, and a making method thereof. In the present invention, ceramic materials are added to resin adhesive in the plate blank gluing layer of the soleplate of the table tennis bat; ceramic fibers are ceramic whiskers or ceramic chopped fibers, or the ceramic fibers are directly used as a composite fiber layer, or the ceramic fibers directly used as the composite fiber layer are added to the resin adhesive in the plate blank gluing layer; and the weight percentage of the ceramic fibers in the resin adhesive is 10 to 35%. The present invention overcomes the limitation and the defects of the structure of a composite fiber veneers comprising multi-layer wooden veneers, common carbon veneers, etc., and the soleplate of the table tennis bat containing ceramic materials, which is provided by the present invention, has the advantages of optimal hitting region enhancement, shock absorption, thermal shock resistance, toughening, abrasion resistance, flange protection, corrosion and weather resistance, high modulus strength, toughness control, soleplate weight control and comprehensive excellent performance of elastic speed and additional rotation for the toughness control.

Description

A kind of base plate of ping-pong bat and manufacture method thereof that contains stupalith

Affiliated technical field

The invention belongs to a kind of table tennis bat and manufacture method thereof that contains stupalith.

Background technology

Common table tennis bat covers the glue bond gummed in the plane by the wood chip veneer to be made, the difference tree material of used veneer forms different base plate of ping-pong bat structures with thickness, determine the performance index of ball plate, comprised parameters such as elasticity, ball speed, rotation, control, unit weight, thickness.The big ball of the table tennis of diameter 40mm causes the travelling speed of table tennis and rotation rotating speed to fall sharply after using alternative former 38mm bead in October, 2000.

With the base plate of ping-pong bat that traditional timber monolithic glued construction designs and makes, on performances such as speed, elasticity and rotation, can not overcome the negative impact that big spherical zone comes to the table tennis technique and tactics.

The common method of existing table tennis bat industry is to add conventional conjugated fibre and metal as far as possible, use general direct plane gluing technique, to improve the consistency and elasticity modulus of base plate, for example carbon element, glass fibre, aryl fiber and titanium, remedy the next speed of big spherical zone and the loss of rotation, but itself exist many defectives that the performance of these base plates is very limited:

1. glue together on the simple plane of synthon and timber monolithic, can only use the sake performance of synthon, and its performance is subjected to the restriction of thickness, is difficult to give full play to the high-strength and high-modulus effect of synthon;

2. the aging degeneration of conventional cementing layer descends the bonding strength of conjugated fibre and wood single-plate, can not make full use of performances such as the intensity of conjugated fibre and modulus;

And usage quantity be subjected to the restriction of International Table Tennis Federation and table tennis bat GB: all wood matrix need account for 85% of base plate, and total thickness such as synthon and metal can not exceed 15% and 0.35mm.

4. the routine of synthon gummed especially uses fabric fibre, has increased the weight of ball plate, but is difficult to improve the over-all properties of table tennis bat;

5. pursue consistency and elasticity merely and cause ball-handling, rotation and loop-drive performance decrease, cause feel and the technology performance of a batting shake influence ball.

Summary of the invention

The objective of the invention is to overcome the restriction and the weak point of conjugated fibre laminated structures such as above multilayer timber glued board and normal carbon; a kind of base plate of ping-pong bat and manufacture method thereof that contains stupalith is provided; has the batting of enhancing optimal region (dessert); the damping resistance to sudden heating; toughened antiwear undermines the edges of boards protection; corrosion resistant weathering resistance, high-modulus intensity and control toughness, control base plate weight and making it have the comprehensive excellent properties that elastic wave velocity and toughness control add commentaries on classics.

The present invention solves the technical scheme that its technical problem takes: the slab that constitutes base plate is formed with the Resin adhesive gummed by wood single-plate, adds ceramic fiber in Resin adhesive.

Said ceramic fiber is ceramic whisker or ceramic chopped strand; Or ceramic fiber glues together composite fibre layer and wood single-plate with Resin adhesive directly as composite fibre layer; Perhaps add ceramic fiber in the Resin adhesive of slab cementing layer, ceramic fiber glues together composite fibre layer and wood single-plate with the Resin adhesive that has added ceramic fiber directly as composite fibre layer; Ceramic fiber shared weight percent in Resin adhesive is 10-35%.Said ceramic fiber comprises: silicon nitride, boron nitride (white graphite), boron, pure aluminium silicate, aluminum oxide, (titaniferous) silicon carbide, glass, carbon (graphite) or its mixture ceramic fiber.

The manufacture method that contains the base plate of ping-pong bat of stupalith provided by the present invention is: add a certain proportion of ceramic fiber in the Resin adhesive of cementing layer, stir with solidifying agent and additive and to form the ceramic resin composite gum, the ceramic resin composite gum is coated between wood single-plate to be glued together, or covering glue at wood single-plate and conjugated fibre interlayer, the base plate of ping-pong bat that contains stupalith is made in expanded curing through heating and pressurizing.

The present invention is used for various base plate of ping-pong bat slab structures with ceramic composite, makes base plate of ping-pong bat have unprecedented specific performance and feature, shows:

1. strengthen batting optimal region (" dessert " scope), the compound cementing layer of ceramic resin transition is in conjunction with ceramic composite fibrous layer, its special toughness makes wood property more even, keep close near the plate face of panel edges and the Young's modulus of central position with batting flexure degree, make the striking speed of exterior point in the racket consistent with control feel trend.

2. resistance to sudden heating and damping effect, stupalith are as a kind of high temperature resistant and heat-resisting stable material, and be stressed in long-term batting, can keep shape and stable performance, avoids fatigue deformation and performance degradation.

3. toughened antiwear has decreased the edges of boards provide protection; compound cementing layer of ceramic resin transition and ceramic composite fibrous layer have toughness and the wear resistance more excellent than common matrix material; when when racket uses, clashing into other object; can not resemble the embrittlement really up to the mark of normal plywood or normal carbon plate; and be easy to generate the edges of boards wearing and tearing of bursting apart, play the effect of protection base plate slab.

4. corrosion resistant weathering resistance, the ceramic fiber of heatproof and heat-resistant stability is formed the compound cementing layer of ceramic resin transition, and directly as the bonding fiber layer, makes base plate have superior stability.

5. high-modulus intensity is in conjunction with the control toughness of excellence, makes it to have the comprehensive excellent properties that elastic wave velocity and toughness control add commentaries on classics.

6. ceramic fiber proportion is little, and very thin layer of fibers and the compound cementing layer combination results of thinner ceramic resin transition be than the better base plate performance of other thick fiber cementing layer, thus stupalith be base plate under excellent over-all properties, keep lightweight characteristics.

Description of drawings

Fig. 1 is the application structure synoptic diagram of the present invention between the wood single-plate glued board.

Fig. 2 is the application structure synoptic diagram of the present invention in the veneer plywood structure of using conjugated fibre.

Fig. 3 for the present invention at laminate (ZL00257302.4) with mould application structure synoptic diagram in the laminated sheet (number of patent application 01138621.5).

Fig. 4 is the application structure synoptic diagram in three-dimensional glued board (ZL01232124.9) of the present invention.

Fig. 5 is the application structure synoptic diagram in conjugated fibre laminate (ZL01274752.1) of the present invention.

Fig. 6 is the application structure synoptic diagram in 3 D stereo conjugated fibre laminate (ZL01274753.X) of the present invention.

1. wood single-plate 2.. Resin adhesive 3. ceramic whiskers or ceramic chopped strands wherein

4. compound cementing layer 5. composite fibre layers of ceramic resin transition (pottery, carbon element, aramid fiber etc.)

6. the wooden part of three-dimensional arrangement

Embodiment

Adding weight percent in the Resin adhesive 2 of cementing layer is ceramic whisker or the ceramic chopped strand 3 of 10-35%, be mainly pure aluminium silicate, silicon nitride, boron nitride (white graphite), boron, aluminum oxide with and the mixing cpd ceramic fiber, stir with solidifying agent and additive and to form the ceramic resin composite gum, the ceramic resin composite gum is coated in 1 of wood single-plate to be glued together, or cover glue at wood single-

plate

1 and 5 of composite fibre layers and form the compound cementing layer 4 of ceramic resin transition, expanded curing obtains containing the base plate of ping-pong bat of stupalith through heating and pressurizing.

Accompanying drawing shows the embodiment that the present invention uses at the base plate of ping-pong bat of various structures.

Among Fig. 1 and Fig. 2, glue-line after the ceramic resin composite gum is solidified is actual to become the very thin conjugated fibre cementing layer that one deck is matrix with the resinous polymer, not only played the bonding strength effect between veneer, and itself become a kind of New-type composite fibre cementing layer, when the gummed of wood single-plate and composite fibre layer, in fact become the transition layer of two kinds of different wood property materials, compound transition glue-line of this ceramic resin and complex fiber material (pottery, carbon element, aramid fiber etc.) combine, produce interaction, generation is than the mechanical property of complex fiber material and the better high-strength and high-modulus of transition cementing layer, therefore very thin composite fibre layer and the thinner compound transition layer of gummed, in conjunction with the interaction between them, just can produce the high modulus and strength mechanical property that is equivalent to thicker simple conjugated fibre, when not exceeding International Table Tennis Federation, form slab structure than common better elasticity of matrix material base plate slab and ball speed to the thickness of composite material regulation.

The glue-line that the compound cementing layer of ceramic resin transition directly forms, because interosculating of ceramic fiber and resin fibre, intermolecular by the crosslinked link of chemical combination key, form special toughness and intensity, do not degenerate aging and embrittlement, avoid the defective of traditional cementing layer and the use restriction and the performance degradation of conjugated fibre.

Fig. 3 is at base plate of ping-pong bat laminate (ZL00257302.4) or mould the compound cementing layer of application ceramic resin transition in the laminated sheet (ZL01138621.5), liquid resin is on timber monolithic surface, or be penetrated into the wood cell fiber and ooze stain when moulding laminated sheet through what special process formed wooden modification, composite ceramics resin between wood single-plate makes mechanical properties such as the modulus intensity of cementing layer and toughness improve a level, and the base plate that laminate is formed has more excellent elasticity control over-all properties.

Compound cementing layer of Fig. 4 ceramic resin transition and ceramic fiber are applied in three-dimensional glued board (ZL01232124.9) structure, in the stereoscopic three-dimensional cementing layer, use, make more last layer of the mechanical property of three-dimensional arrangement and base plate characteristic, avoiding any glue-line to degenerate wears out and embrittlement, the ball-handling of the elastic wave velocity of three-dimensional arrangement and toughness is added change performance more excellent and durable, wherein the compound cementing layer of ceramic resin transition all is applied on plane and the vertical cemented surface, and ceramic fiber layer is used and can be distinguished or simultaneously on plane or vertical cementing layer, the complex fiber material that uses on vertical cemented surface can be a carbon element, aramid fiber, general matrix material such as glass fibre and titanium.

Fig. 5 is at composite layered plate (ZL01274752.1)) and Fig. 63 D stereo composite layered plate (ZL01274753.x) in use the compound cementing layer of ceramic resin transition, and with ceramic fiber directly as composite fibre layer, form the New-type composite fibre laminate, its comprehensive modulus elasticity and toughness control performance are more excellent more than the composite layered plate of general conjugated fibre (as carbon element, titanium and aryl).

Claims

1. base plate of ping-pong bat that contains stupalith, the slab that constitutes base plate is formed with the Resin adhesive gummed by wood single-plate, it is characterized in that adding in Resin adhesive ceramic fiber.

2. a base plate of ping-pong bat that contains stupalith is characterized in that ceramic fiber directly as composite fibre layer, with Resin adhesive composite fibre layer and wood single-plate is glued together.

3. base plate of ping-pong bat that contains stupalith is characterized in that adding ceramic fiber in the Resin adhesive of slab cementing layer, and ceramic fiber glues together composite fibre layer and wood single-plate with the Resin adhesive that has added ceramic fiber directly as composite fibre layer.

4. according to claim 1 or 2 or 3 described base plate of ping-pong bat, it is characterized in that said ceramic fiber is ceramic whisker or ceramic chopped strand.

5. according to claim 1 or 2 or 3 described base plate of ping-pong bat, it is characterized in that the weight percent of ceramic fiber in Resin adhesive is 10-35%.

6. base plate of ping-pong bat according to claim 4 is characterized in that said ceramic fiber comprises silicon nitride, boron nitride, boron, pure aluminium silicate, aluminum oxide, contains silicon titanium-carbide, glass, carbon or its mixture ceramic fiber.

7. the manufacture method of a claim 1,2 and 3 described base plate of ping-pong bat, it is characterized in that this manufacture method is: in the Resin adhesive of cementing layer, add a certain proportion of ceramic fiber, stir with solidifying agent and additive and to form the ceramic resin composite gum, the ceramic resin composite gum between wood single-plate to be glued together, or covering glue at wood single-plate and conjugated fibre interlayer, the base plate of ping-pong bat that contains stupalith is made in expanded curing through heating and pressurizing.