Golf ball with short flight distance and preparation method thereof

Abstract

The invention relates to the field of golf ball processing, and particularly discloses a golf ball with a short flight distance and a preparation method thereof, and the golf ball with the short flight distance comprises a ball center and a ball cover; the ball core is prepared from the following raw materials in parts by weight: 90 to 110 parts of butadiene styrene rubber, 12 to 18 parts of a cross-linking agent, 8 to 12 parts of a dispersing agent, 25 to 35 parts of filler, 8 to 12 parts of a vulcanization accelerator and 0.3 to 0.6 part of a vulcanizing agent; the ball skin is prepared from the following raw materials in parts by weight: 90 to 110 parts of hard surlyn resin and 50 to 70 parts of soft surlyn resin; the preparation method comprises the following steps: uniformly mixing the styrene butadiene rubber, the cross-linking agent, the dispersing agent, the filler, the vulcanization accelerator and the vulcanizing agent, banburying, extruding, heating and pressurizing to obtain a sphere center; the hard surlyn resin and the soft surlyn resin are mixed and then coated on the surface of the ball center through injection molding treatment to form a ball cover, and the golf ball is obtained. The method has the advantage of short flight distance.

Description

Technical Field

[0001] This application relates to the field of golf ball manufacturing, and more specifically, to a golf ball with a short flight distance and a method for manufacturing the same. Background Technology

[0002] With the increasing number of mini golf driving ranges, when people hit their practice balls, they sometimes hit the golf balls into the perimeter netting, which easily damages the netting and results in a great deal of waste.

[0003] Therefore, there is an urgent need to develop a golf ball with a shorter flight distance to reduce the wear and tear on the outer perimeter netting. Summary of the Invention

[0004] In order to prepare a golf ball with a shorter flight distance, this application provides a golf ball with a shorter flight distance and a method for preparing the same.

[0005] In a first aspect, this application provides a golf ball with a shorter flight distance, employing the following technical solution: A golf ball with a shorter flight distance includes a core and a shell; The core of the ball comprises the following raw materials in parts by weight: 90-110 parts styrene-butadiene rubber, 12-18 parts crosslinking agent, 8-12 parts dispersant, 25-35 parts filler, 8-12 parts vulcanization accelerator, and 0.3-0.6 parts vulcanizing agent; The ball skin comprises the following raw materials in parts by weight: 90-110 parts of hard sarin resin and 50-70 parts of soft sarin resin.

[0006] By adopting the above technical solution, styrene-butadiene rubber, crosslinking agent, dispersant, filler, vulcanization accelerator and vulcanizing agent are combined to make the filler uniformly dispersed in styrene-butadiene rubber. The resulting ball core has low elasticity and can reduce the core driving force. When combined with sarin resin as the ball skin, the elasticity of the golf ball can be further reduced, the depth and distribution of the wind tunnel can be changed, the vacuum effect caused by backspin can be reduced, and the flight distance can be minimized.

[0007] Under the high cross-linking effect of the cross-linking agent, the filler in styrene-butadiene rubber (SBR) is stably distributed inside, ensuring the strength and hardness of the ball's core. Combined with dispersants, vulcanization accelerators, and vulcanizing agents, SBR can cross-link to form a three-dimensional network structure, further improving the core strength and reducing its resilience. Meanwhile, the low friction and high surface hardness of salin resin limit ball deformation at impact, reducing the conversion of kinetic energy into elastic potential energy, thus lowering the initial flight speed. Furthermore, the ionic bonds between salin resin molecular chains provide rigidity at room temperature, but under high-speed impact, they absorb some impact energy and convert it into heat. This energy dissipation mechanism further weakens the ball's rebound efficiency, thereby further shortening the golf ball's flight distance.

[0008] Preferably, the styrene-butadiene rubber is composed of emulsion styrene-butadiene rubber and carboxylated styrene-butadiene rubber in a mass ratio of 1:0.2-0.4.

[0009] By adopting the above technical solution, emulsion styrene-butadiene rubber and carboxylated styrene-butadiene rubber are combined. The smooth surface of emulsion styrene-butadiene rubber causes airflow separation, forming a larger low-pressure wake region, increasing pressure drag and shortening the flight distance. Meanwhile, due to the introduction of carboxyl groups, carboxylated styrene-butadiene rubber can help to actively adjust the surface texture, increasing drag at low speeds to shorten the distance.

[0010] The combination of poly(lactic-butadiene rubber) and carboxylated styrene-butadiene rubber utilizes the abrasion resistance of poly(lactic-butadiene rubber) and the carboxyl groups in the second batch and carboxylated styrene-butadiene rubber are anchored on the molecular chain to improve shear resistance, ensuring that the ball center has good stability during impact and is not prone to deformation. Combined with the filling effect of fillers and the three-dimensional cross-linked network formed by vulcanization, the structural stability of the golf ball is further guaranteed.

[0011] Preferably, the filler is made of barium sulfate and aluminum hydroxide in a mass ratio of 1:0.6-1.2.

[0012] By adopting the above technical solution, barium sulfate and aluminum hydroxide are combined. Barium sulfate, as a high-density inorganic filler, can significantly increase the ball's core mass and reduce the initial velocity during impact, thereby reducing the flight distance. The addition of aluminum hydroxide can form a micro-rough surface, promote airflow separation, increase pressure resistance, and the interfacial interaction with styrene-butadiene rubber can also suppress energy rebound, further reducing the flight distance.

[0013] Preferably, the barium sulfate is prepared from barium sulfate microparticles, polyacrylic acid solution and magnesium oxide microparticles in a mass ratio of 1:0.1-0.15:0.15-0.2.

[0014] By employing the above technical solution, barium sulfate microparticles, polyacrylic acid solution, and magnesium oxide microparticles are combined. The viscosity of the polyacrylic acid solution is used to bond the magnesium oxide microparticles and barium sulfate microparticles. Both barium sulfate and magnesium oxide are high-density inorganic microparticles. The combination of high-density microparticles and soft polyacrylic acid matrix absorbs some of the impact kinetic energy, reducing the initial velocity of the ball. Furthermore, the magnesium oxide microparticles can change the interface characteristics between the ball's center and the overlay, reducing the spin efficiency during impact, thereby reducing aerodynamic lift and shortening the flight distance of the golf ball. At the same time, the viscoelasticity of the polyacrylic acid solution may further dissipate impact energy, further shortening the flight distance of the golf ball through a damping effect.

[0015] Preferably, the aluminum hydroxide is prepared from aluminum hydroxide particles, aminobutadiene rubber and mesoporous silica in a mass ratio of 1:0.1-0.25:0.05-0.1.

[0016] By employing the above technical solution, aluminum hydroxide microparticles, aminobutadiene nitrile rubber, and mesoporous silica are combined. The adhesive effect of aminobutadiene nitrile rubber facilitates the bonding between mesoporous silica and aluminum hydroxide microparticles. The porous structure and high specific surface area of ​​mesoporous silica absorb part of the impact kinetic energy, which is converted into heat energy through internal friction, thus shortening the flight distance. In addition, the rigidity of aluminum hydroxide microparticles interferes with the dynamic response of the interface between the ball's center and the cover layer, reducing the spin efficiency at impact and shortening the flight distance of the golf ball by reducing aerodynamic lift. At the same time, using aminobutadiene nitrile rubber as a low elastic modulus matrix, combined with high-density aluminum hydroxide and mesoporous silica, limits energy transfer and weakens elastic recovery, thereby further shortening the flight distance of the golf ball.

[0017] Preferably, the crosslinking agent is dicumyl peroxide.

[0018] By adopting the above technical solution, dicumyl peroxide initiates free radical reactions between rubber molecular chains to form a stable CC crosslinking network, which significantly improves the mechanical strength and elastic modulus of the ball core material. This crosslinking structure can optimize the energy transfer efficiency during impact, reduce the initial speed of the ball, and shorten the flight distance.

[0019] Preferably, the vulcanizing agent is sulfur.

[0020] By adopting the above technical solution, sulfur decomposes into active sulfur free radicals when heated, which react with the double bonds on the styrene-butadiene rubber molecular chain to form polysulfide cross-linking bonds. Combined with vulcanization accelerators, this promotes the formation of cross-linking networks and improves the durability and quality of golf balls.

[0021] Preferably, the sphere further includes 1-3 parts of molecular sieve composite material and 1-2 parts of silane coupling agent KH-550 modified hollow glass microspheres.

[0022] By adopting the above technical solution, molecular sieve composite material is combined with silane coupling agent KH-550 modified hollow glass microspheres. The porous structure of the molecular sieve composite material is combined with the cavity structure of the hollow glass microspheres. Part of the energy of the ball impact is used to compress the cavity structure and the pore structure, so that the energy is not completely converted into flight kinetic energy, resulting in a decrease in initial velocity. Combined with the internal friction generated by the pore and cavity structure during high-speed rotation, the rotational stability of the ball is weakened, indirectly improving the damping effect, thereby shortening the flight distance. The silane coupling agent KH-550 connects to the silanol groups on the surface of hollow glass microspheres through a hydrolysis-condensation reaction, while the amino groups connect to sarin resin, forming a stable molecular bridge structure. When the ball is hit, some of the kinetic energy is converted into the elastic deformation energy of the hollow structure of the microsphere and the interfacial bond breaking energy, reducing the initial velocity of the ball. In combination with the silane coupling agent KH-550, the hollow glass microsphere-resin interface can be modified to suppress the transmission of high-frequency vibrations, reduce the conversion of kinetic energy during flight, and further shorten the flight distance of the golf ball.

[0023] The silane coupling agent KH-550 in the hollow glass microspheres in the ball skin is combined with the carboxyl styrene-butadiene rubber in the ball core, the carboxyl groups of polyacrylic acid in barium sulfate, and the amino groups of aminobutadiene nitrile rubber in aluminum hydroxide to improve the bonding stability between the ball core and the ball skin, thereby ensuring the structural stability of the golf ball.

[0024] Preferably, the molecular sieve composite material is prepared from molecular sieve, rosin glycerol ester solution and zinc oxide microparticles in a mass ratio of 10:1-1.6:1.4-2.

[0025] By adopting the above technical solution, the bonding and sealing effect of the rosin glycerol ester solution allows zinc oxide particles to bond with the molecular sieve. The limited ratio ensures that the pores of the molecular sieve are neither completely blocked by the rosin glycerol ester solution nor filled by the zinc oxide particles. The zinc oxide particles do not affect the internal pore channels of the molecular sieve. The porous structure of the molecular sieve absorbs the impact energy of the ball, and the molecular friction within the channels is converted into heat energy, reducing resilience and shortening the flight distance of the golf ball. Furthermore, the connection between the nano-sized zinc oxide and the rosin glycerol ester increases the rigidity of the ball skin, reduces resilience, and shortens the flight distance of the golf ball. At the same time, the connection between the sarin resin and the molecular sieve composite material forms a network, which tortuous the particle size of the shock wave propagation, increases energy consumption during impact, and further shortens the flight distance. Secondly, this application provides a method for preparing a golf ball with a shorter flight distance, employing the following technical solution: A method for preparing a golf ball with a shorter flight distance includes the following steps: S1, styrene-butadiene rubber, crosslinking agent, dispersant, filler, vulcanization accelerator, and vulcanizing agent are mixed and then subjected to intensive mixing, extrusion, and then heated and pressurized through a spherical mold to obtain the sphere core; S2, hard sarin resin, and soft sarin resin are mixed and then injected onto the surface of the ball's core to form a ball skin, resulting in a finished golf ball.

[0026] By adopting the above technical solution, the ball core is first prepared, and then the ball skin is attached. By utilizing the shape of the spherical mold, in conjunction with the ball core and ball skin, the flight distance of the golf ball is shortened.

[0027] In summary, this application has the following beneficial effects: 1. The combination of styrene-butadiene rubber, crosslinking agent, dispersant, filler, vulcanization accelerator and vulcanizing agent makes the filler uniformly dispersed in styrene-butadiene rubber, resulting in a ball with low elasticity in the core and reducing the core driving force; when combined with sarin resin as the ball skin, it can further reduce the elasticity of the golf ball, change the depth and distribution of the wind tunnel, reduce the vacuum effect caused by backspin, and maximize the reduction of flight distance.

[0028] 2. The combination of emulsion styrene-butadiene rubber and carboxylated styrene-butadiene rubber utilizes the smooth surface of emulsion styrene-butadiene rubber to cause airflow separation, forming a larger low-pressure wake region, increasing pressure drag and shortening flight distance; while the introduction of carboxylated styrene-butadiene rubber, due to the carboxyl group, can help to actively adjust the surface texture, increasing drag at low speeds to shorten the distance.

[0029] 3. The combination of barium sulfate and aluminum hydroxide: Barium sulfate, as a high-density inorganic filler, can significantly increase the ball's core mass and reduce the initial velocity during impact, thereby reducing the flight distance. The addition of aluminum hydroxide can form a micro-rough surface, promote airflow separation, increase pressure resistance, and the interfacial interaction with styrene-butadiene rubber can also suppress energy rebound, further reducing the flight distance. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the embodiments.

[0031] Preparation example of barium sulfate All of the following ingredients are commercially available.

[0032] Preparation Example 1: Barium sulfate was prepared by the following method: 0.13 kg of polyacrylic acid solution was uniformly sprayed onto the surface of 1 kg of barium sulfate particles, and then 0.17 kg of magnesium oxide particles were added. The average particle size of the barium sulfate particles was 60 μm, the polyacrylic acid solution was a 1% (w / w) aqueous solution of polyacrylic acid, the average particle size of the magnesium oxide particles was 10 μm, and the magnesium oxide particles were added at a rate of 100 g / min. During the addition process, the barium sulfate particles were continuously stirred at a speed of 80 r / min. After uniform mixing, barium sulfate was obtained and passed through a 150-mesh sieve.

[0033] Preparation Example 2: The difference between this preparation example and Preparation Example 1 is that: 0.15 kg of polyacrylic acid solution was uniformly sprayed onto the surface of 1 kg of barium sulfate particles, and then 0.15 kg of magnesium oxide particles were added. The average particle size of the barium sulfate particles was 60 μm, the polyacrylic acid solution was a 1% (w / w) aqueous solution of polyacrylic acid, the average particle size of the magnesium oxide particles was 10 μm, and the magnesium oxide particles were added at a rate of 100 g / min. During the addition process, the barium sulfate particles were continuously stirred at a speed of 80 r / min. After uniform mixing, barium sulfate was obtained and passed through a 150-mesh sieve.

[0034] Preparation Example 3: The difference between this preparation example and Preparation Example 1 is that: 0.1 kg of polyacrylic acid solution was uniformly sprayed onto the surface of 1 kg of barium sulfate particles, and then 0.2 kg of magnesium oxide particles were added. The average particle size of the barium sulfate particles was 60 μm, the polyacrylic acid solution was a 1% (w / w) aqueous solution of polyacrylic acid, the average particle size of the magnesium oxide particles was 10 μm, and the magnesium oxide particles were added at a rate of 100 g / min. During the addition process, the barium sulfate particles were continuously stirred at a speed of 80 r / min. After uniform mixing, barium sulfate was obtained and passed through a 150-mesh sieve.

[0035] Preparation example of aluminum hydroxide All of the following ingredients are commercially available.

[0036] Preparation Example 4: Aluminum hydroxide was prepared by the following method: 0.22 kg of aminobutadiene nitrile rubber (APNBR) was uniformly sprayed onto the surface of 1 kg of aluminum hydroxide particles. The APNBR was terminal amino liquid APNBR. Then, 0.08 kg of mesoporous silica was added. The average particle size of the aluminum hydroxide particles was 40 μm, and the average particle size of the mesoporous silica was 200 nm. The addition rate of the mesoporous silica was 100 g / min. During the addition process, the aluminum hydroxide particles were continuously stirred at a speed of 80 r / min. After uniform mixing, aluminum hydroxide was obtained and passed through a 250 mesh sieve.

[0037] Preparation Example 5: The difference between this preparation example and Preparation Example 4 is that: 0.25 kg of aminobutadiene nitrile rubber was uniformly sprayed onto the surface of 1 kg of aluminum hydroxide particles, and then 0.05 kg of mesoporous silica was added. The average particle size of the aluminum hydroxide particles was 40 μm, and the average particle size of the mesoporous silica was 200 nm. The addition rate of the mesoporous silica was 100 g / min. During the addition process, the aluminum hydroxide particles were continuously stirred at a speed of 80 r / min. After uniform mixing, aluminum hydroxide was obtained and passed through a 250 mesh sieve.

[0038] Preparation Example 6: The difference between this preparation example and Preparation Example 4 is that: 0.1 kg of aminobutadiene nitrile rubber was uniformly sprayed onto the surface of 1 kg of aluminum hydroxide particles, and then 0.1 kg of mesoporous silica was added. The average particle size of the aluminum hydroxide particles was 40 μm, and the average particle size of the mesoporous silica was 200 nm. The addition rate of the mesoporous silica was 100 g / min. During the addition process, the aluminum hydroxide particles were continuously stirred at a speed of 80 r / min. After uniform mixing, aluminum hydroxide was obtained and passed through a 250 mesh sieve.

[0039] Preparation example of molecular sieve composites All of the following ingredients are commercially available.

[0040] Preparation Example 7: Molecular sieve composites were prepared using the following method: 1.4 kg of rosin glycerol ester solution was uniformly sprayed onto the surface of 10 kg of molecular sieve, and then 1.6 kg of zinc oxide microparticles were added. The average particle size of the molecular sieve was 50 μm, the average porosity was 55%, the mass fraction of the rosin glycerol ester solution was 1%, the solvent was ethyl acetate, the average particle size of the zinc oxide microparticles was 5 μm, and the zinc oxide microparticles were added at a rate of 100 g / min. During the addition process, the molecular sieve was continuously stirred at a speed of 80 r / min. After uniform mixing, the molecular sieve composite material was obtained and passed through a 200 mesh sieve.

[0041] Preparation Example 8: The difference between this preparation example and Preparation Example 7 is that: 1.6 kg of rosin glycerol ester solution was uniformly sprayed onto the surface of 10 kg of molecular sieve, and then 1.4 kg of zinc oxide microparticles were added. The average particle size of the molecular sieve was 50 μm, the average porosity was 55%, the mass fraction of the rosin glycerol ester solution was 1%, the solvent was ethyl acetate, the average particle size of the zinc oxide microparticles was 5 μm, and the zinc oxide microparticles were added at a rate of 100 g / min. During the addition process, the molecular sieve was continuously stirred at a speed of 80 r / min. After uniform mixing, the molecular sieve composite material was obtained and passed through a 200 mesh sieve.

[0042] Preparation Example 9: The difference between this preparation example and Preparation Example 7 is that: 1 kg of rosin glycerol ester solution was uniformly sprayed onto the surface of 10 kg of molecular sieve, and then 2 kg of zinc oxide microparticles were added. The average particle size of the molecular sieve was 50 μm, the average porosity was 55%, the mass fraction of the rosin glycerol ester solution was 1%, the solvent was ethyl acetate, the average particle size of the zinc oxide microparticles was 5 μm, and the zinc oxide microparticles were added at a rate of 100 g / min. During the addition process, the molecular sieve was continuously stirred at a speed of 80 r / min. After uniform mixing, the molecular sieve composite material was obtained and passed through a 200 mesh sieve.

[0043] Preparation example of hollow glass microspheres modified with silane coupling agent KH-550 Preparation Example 10: Hollow glass microspheres modified with silane coupling agent KH-550 were prepared by the following method: 1 kg of hollow glass microspheres were immersed and dispersed in 10 kg of silane coupling agent KH-550 for 20 min. The average particle size of the hollow glass microspheres was 20 μm. The hollow glass microspheres were then filtered out and dried to obtain the finished product. Example

[0044] The following raw materials were purchased from Nanjing Baiju Technology Co., Ltd. for carboxylated styrene-butadiene rubber; Wuhan Jiangxin Biotechnology Co., Ltd. for emulsion styrene-butadiene rubber; Dongguan Baoyunlai Coatings Technology Co., Ltd. for two-component PU high-gloss varnish; and other raw materials were commercially available.

[0045] Example 1: A golf ball with a shorter flight distance: Including the center and the outer skin of the ball; Core: 100 kg styrene-butadiene rubber, 15 kg crosslinking agent, 10 kg dispersant, 30 kg filler, 10 kg vulcanization accelerator, 0.5 kg vulcanizing agent; the styrene-butadiene rubber is composed of emulsion styrene-butadiene rubber and carboxylated styrene-butadiene rubber in a mass ratio of 1:0.3; the crosslinking agent is dicumyl peroxide; the dispersant is sodium dodecylbenzene sulfonate; the filler is prepared from barium sulfate prepared in Preparation Example 1 and aluminum hydroxide prepared in Preparation Example 4 in a mass ratio of 1:1; the vulcanization accelerator is accelerator CZ, and the vulcanizing agent is sulfur; Ball skin: 100kg hard sarin resin, 60kg soft sarin resin; The preparation method is as follows: S1, styrene-butadiene rubber, crosslinking agent, dispersant, and filler are mixed evenly and then internally mixed at 130°C. Then, vulcanization accelerator and vulcanizing agent are added and internally mixed at 75°C. The mixture is then extruded to obtain cylindrical rubber rods. These rods are then subjected to pressure and heat treatment through a spherical mold on a flat vulcanizing agent to obtain rough balls. Finally, the rough balls are ground to a size of 39.8 mm using a ball core grinder to obtain the ball cores. S2, hard sarin resin, and soft sarin resin are mixed to obtain a mixture. The mixture is then injected into the surface of the ball's core at 200°C using an injection molding machine equipped with a wind tunnel mold to form a ball skin. Finally, after printing and spraying a two-component PU high-gloss varnish and curing, the finished golf ball is obtained.

[0046] Example 2: The difference between this example and Example 1 is that: Core: 90 kg styrene-butadiene rubber, 12 kg crosslinking agent, 8 kg dispersant, 25 kg filler, 8 kg vulcanization accelerator, 0.3 kg vulcanizing agent; the styrene-butadiene rubber is composed of emulsion styrene-butadiene rubber and carboxylated styrene-butadiene rubber in a mass ratio of 1:0.2; the crosslinking agent is dicumyl peroxide; the dispersant is sodium dodecylbenzene sulfonate; the filler is prepared from barium sulfate prepared in Preparation Example 2 and aluminum hydroxide prepared in Preparation Example 5 in a mass ratio of 1:0.6. Ball skin: 90kg of hard sarin resin and 50kg of soft sarin resin.

[0047] Example 3: The difference between this example and Example 1 is that: Core: 110 kg styrene-butadiene rubber, 18 kg crosslinking agent, 12 kg dispersant, 35 kg filler, 12 kg vulcanization accelerator, and 0.6 kg vulcanizing agent; the styrene-butadiene rubber is composed of emulsion styrene-butadiene rubber and carboxylated styrene-butadiene rubber in a mass ratio of 1:0.4; the crosslinking agent is dicumyl peroxide; the dispersant is sodium dodecylbenzene sulfonate; the filler is prepared from barium sulfate prepared in Preparation Example 3 and aluminum hydroxide prepared in Preparation Example 6 in a mass ratio of 1:1.2. Ball skin: 110kg of hard sarin resin and 70kg of soft sarin resin.

[0048] Example 4: The difference between this example and Example 1 is that: The sphere also includes 2 kg of molecular sieve composite material and 1.5 kg of hollow glass microspheres modified with silane coupling agent KH-550; During the preparation process: S2, hard sarin resin, soft sarin resin, molecular sieve composite material and silane coupling agent KH-550 modified hollow glass microspheres are mixed to obtain a mixture. The mixture is then injected into the core surface of the ball at 200°C using an injection molding machine equipped with a wind tunnel mold to form a ball skin. Finally, after printing and spraying a two-component PU high-gloss varnish, and curing, the finished golf ball is obtained.

[0049] Example 5: The difference between this example and Example 4 is that: The outer shell also includes 1 kg of molecular sieve composite material and 1 kg of hollow glass microspheres modified with silane coupling agent KH-550.

[0050] Example 6: The difference between this example and Example 4 is that: The sphere also includes 3 kg of molecular sieve composite material and 2 kg of hollow glass microspheres modified with silane coupling agent KH-550.

[0051] Example 7: The difference between this example and Example 1 is that: The barium sulfate in the filler is replaced with barium sulfate particles of equal mass, meaning that there is no polyacrylic acid solution and magnesium oxide particles on the surface of the barium sulfate particles.

[0052] Example 8: The difference between this example and Example 1 is that: The filler is made by replacing aluminum hydroxide with an equal mass of aluminum hydroxide particles, meaning that the aluminum hydroxide particles have no aminobutadiene rubber and mesoporous silica on their surface.

[0053] Example 9: The difference between this example and Example 1 is that: In the preparation process of aluminum hydroxide in the filler, the amino-butadiene-nitrile rubber is replaced with an equal mass of liquid nitrile rubber; the liquid nitrile rubber does not contain amino groups.

[0054] Example 10: The difference between this example and Example 4 is that: The molecular sieve composite material in the ball shell is replaced with an equal mass of molecular sieve.

[0055] Example 11: The difference between this example and Example 4 is that: The hollow glass microspheres modified with silane coupling agent KH-550 were replaced in the outer shell with hollow glass microspheres of equal mass.

[0056] Comparative Example Comparative Example 1: The difference between this comparative example and Example 1 is that: No fillers were added to the raw materials.

[0057] Performance testing 1. Flight distance detection Golf balls were prepared using the methods of Examples 1-11 and Comparative Example 1, respectively. The flight distance was measured and the data was recorded under the conditions of ball speed of 160 mph, takeoff angle of 15°, backspin of 2500 rpm, and other compatible conditions.

[0058] 2. Structural stability testing Golf balls were prepared using the methods of Examples 1-11 and Comparative Example 1, respectively. After being hit 50,000 times continuously under the same speed and hitting conditions, the spin stability loss rate was calculated and the data was recorded.

[0059] Table 1 Performance Test Table As can be seen from Examples 1-3 and Table 1, the golf balls prepared in this application have a lower flight distance and a lower rate of spin stability loss. After 50,000 hits, they still have good spin control, indicating that the ball center and the ball skin have good stability.

[0060] As can be seen from Examples 1 and 4-6 and Table 1, adding molecular sieve composite material and silane coupling agent KH-550 to the ball skin of modified hollow glass microspheres can further shorten the flight distance and improve the stability of the golf ball.

[0061] Combining Examples 1 and 7-9 with Table 1, it can be seen that in Example 7, barium sulfate was replaced with barium sulfate microparticles of equal mass, meaning that there was no polyacrylic acid solution and magnesium oxide microparticles on the surface of the barium sulfate microparticles. Compared with Example 1, the golf ball prepared in Example 7 had a greater flight distance and a greater spin stability loss rate. This indicates that magnesium oxide is a high-density inorganic microparticle. The combination of high-density microparticles and soft polyacrylic acid matrix absorbs some of the impact kinetic energy, reducing the initial velocity of the ball. Furthermore, magnesium oxide microparticles can change the interface characteristics between the ball's center and the cover layer, reducing the spin efficiency during impact, thereby reducing aerodynamic lift and shortening the flight distance of the golf ball. At the same time, the viscoelasticity of the polyacrylic acid solution may further dissipate impact energy, further shortening the flight distance of the golf ball through a damping effect.

[0062] In Example 8, aluminum hydroxide was replaced with an equal mass of aluminum hydroxide microparticles, meaning the aluminum hydroxide microparticles had no aminobutadiene rubber or mesoporous silica on their surface. Compared to Example 1, the golf ball prepared in Example 8 had a greater flight distance and a greater spin stability loss rate. This indicates that the porous structure and high specific surface area of ​​mesoporous silica absorb part of the impact kinetic energy, which is then converted into heat energy through internal friction, thus shortening the flight distance. Using aminobutadiene rubber as a matrix with a low elastic modulus, combined with high-density aluminum hydroxide and mesoporous silica, limits energy transfer and weakens elastic recovery, thereby further shortening the flight distance of the golf ball.

[0063] In Example 9, the aluminum hydroxide preparation process was carried out by replacing the amino-containing nitrile rubber with an equal mass of liquid nitrile rubber. The liquid nitrile rubber did not contain amino groups. Compared with Example 1, the golf ball prepared in Example 9 had a greater flight distance and a greater spin stability loss rate. This indicates that the amino-containing nitrile rubber can be linked to the carboxyl groups of the polyacrylic acid melt on the surface of barium sulfate, and can also be linked to the carboxyl groups of the carboxylated styrene-butadiene rubber, further improving the bonding effect between aluminum hydroxide and styrene-butadiene rubber, ensuring structural stability while shortening the flight distance of the golf ball.

[0064] Combining Examples 4 and 10-11 with Table 1, it can be seen that in Example 10, replacing the molecular sieve composite material with the same mass of molecular sieve in the ball skin resulted in a greater flight distance and a higher spin stability loss rate compared to Example 4. This indicates that the rosin glycerol ester solution has a binding and sealing effect, causing the zinc oxide particles to bond with the molecular sieve. The connection between the nano-sized zinc oxide and rosin glycerol ester increases the rigidity of the ball skin, reduces resilience, and shortens the flight distance of the golf ball. At the same time, the connection between the sarin resin and the molecular sieve composite material forms a network, which tortuous the particle size of the shock wave propagation, increases energy consumption during impact, and further shortens the flight distance.

[0065] In Example 11, hollow glass microspheres modified with silane coupling agent KH-550 were replaced with hollow glass microspheres of equal mass in the ball shell. Compared with Example 4, the golf ball prepared in Example 11 had a greater flight distance and a greater rate of rotational stability loss than that in Example 4. This indicates that the interface between the hollow glass microspheres modified with silane coupling agent KH-550 and the resin can suppress high-frequency vibration transmission, reduce the conversion of energy flight kinetic energy, and further shorten the flight distance of the golf ball. It also improves the adhesion between the hollow glass microspheres and carboxylated styrene-butadiene rubber and the filler, thereby improving the bonding stability between the ball core and the ball shell, thus ensuring the structural stability of the golf ball.

[0066] Combining Example 1 and Comparative Example 1 with Table 1, it can be seen that no filler was added to the raw materials of Comparative Example 1. Compared with Example 1, the golf ball prepared in Comparative Example 1 had a greater flight distance and a greater rate of rotational stability loss than that in Example 1. This indicates that the addition of filler can not only reduce the initial flight speed of the golf ball, but also improve the structural stability of the golf ball.

[0067] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A golf ball with a shorter flight distance, characterized in that, Including the center and the outer skin of the ball; The core of the ball comprises the following raw materials in parts by weight: 90-110 parts styrene-butadiene rubber, 12-18 parts crosslinking agent, 8-12 parts dispersant, 25-35 parts filler, 8-12 parts vulcanization accelerator, and 0.3-0.6 parts vulcanizing agent; The ball skin comprises the following raw materials in parts by weight: 90-110 parts of hard sarin resin and 50-70 parts of soft sarin resin.

2. A golf ball with a shorter flight distance according to claim 1, characterized in that: The styrene-butadiene rubber is composed of emulsion styrene-butadiene rubber and carboxylated styrene-butadiene rubber in a mass ratio of 1:0.2-0.

4.

3. A golf ball with a shorter flight distance according to claim 1, characterized in that, The filler is made from barium sulfate and aluminum hydroxide in a mass ratio of 1:0.6-1.

2.

4. A golf ball with a shorter flight distance according to claim 3, characterized in that, The barium sulfate is prepared from barium sulfate microparticles, polyacrylic acid solution and magnesium oxide microparticles in a mass ratio of 1:0.1-0.15:0.15-0.

2.

5. A golf ball with a shorter flight distance according to claim 3, characterized in that, The aluminum hydroxide is prepared from aluminum hydroxide particles, aminobutadiene rubber, and mesoporous silica in a mass ratio of 1:0.1-0.25:0.05-0.

1.

6. A golf ball with a shorter flight distance according to claim 1, characterized in that, The crosslinking agent is dicumyl peroxide.

7. A golf ball with a shorter flight distance according to claim 1, characterized in that, The vulcanizing agent is sulfur.

8. A golf ball with a shorter flight distance according to claim 1, characterized in that, The sphere also includes 1-3 parts of molecular sieve composite material and 1-2 parts of silane coupling agent KH-550 modified hollow glass microspheres.

9. A golf ball with a shorter flight distance according to claim 8, characterized in that, The molecular sieve composite material is prepared from molecular sieves, rosin glycerol ester solution and zinc oxide microparticles in a mass ratio of 10:1-1.6:1.4-2.

10. A method for preparing a golf ball with a shorter flight distance according to any one of claims 1-9, characterized in that, Includes the following steps: S1, styrene-butadiene rubber, crosslinking agent, dispersant, filler, vulcanization accelerator, and vulcanizing agent are mixed and then subjected to intensive mixing, extrusion, and then heated and pressurized through a spherical mold to obtain the sphere core; S2, hard sarin resin, and soft sarin resin are mixed and then injected onto the surface of the ball's core to form a ball skin, resulting in a finished golf ball.

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