CN112973046A - Synthetic leather-covered basketball based on microfiber and preparation process thereof - Google Patents
Synthetic leather-covered basketball based on microfiber and preparation process thereof Download PDFInfo
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- CN112973046A CN112973046A CN202110146464.3A CN202110146464A CN112973046A CN 112973046 A CN112973046 A CN 112973046A CN 202110146464 A CN202110146464 A CN 202110146464A CN 112973046 A CN112973046 A CN 112973046A
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B41/00—Hollow inflatable balls
- A63B41/08—Ball covers; Closures therefor
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B41/00—Hollow inflatable balls
- A63B41/12—Tools or devices for blowing up or closing balls
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B45/00—Apparatus or methods for manufacturing balls
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C08J2309/06—Copolymers with styrene
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
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Abstract
The invention relates to the technical field of basketballs, in particular to a leather-attached basketball based on microfiber synthetic leather and a preparation process thereof. The skin is made of microfiber synthetic leather, the middle tyre comprises a butyl liner, nylon threads and high-elasticity foamed rubber, the microfiber synthetic leather is used as the skin in the microfiber synthetic leather-based veneered basketball and the preparation process thereof, so that the prepared basketball has the advantages of high tear strength, high tensile strength, good air permeability and folding resistance, good cold resistance and mildew resistance, thick, full and plump ball body and excellent gripping performance, and the ball touch feeling and the skid resistance are improved.
Description
Technical Field
The invention relates to the technical field of basketballs, in particular to a leather-attached basketball based on microfiber synthetic leather and a preparation process thereof.
Background
The basketball is one of the balls loved by young people, and is divided into a hand-sewn ball and a leather-covered ball, the most common basketball is the leather-covered ball and is made of an inner container, an outer skin, a ball mouth and the like, wherein the inner container is the ball container and is the heart of the ball, and the innermost layer of the ball is made of black rubber; the epidermis is divided into synthetic leather (superfine strong fiber, PU, PVC, etc.) and genuine leather; the ball nozzle is used for inflating a ball, currently, leather and artificial leather exist, and polyurethane synthetic leather is widely used;
the basketball prepared by the existing preparation process of the covered basketball has poor tear resistance, low strength and insufficient elasticity, so a novel preparation process of the covered basketball is needed to improve the defects of the prior art.
Disclosure of Invention
The invention aims to provide a microfiber synthetic leather-based leather-attached basketball and a preparation process thereof, and aims to solve the problems in the background art.
In order to achieve the above object, in one aspect, the present invention provides a microfiber synthetic leather-based leather-covered basketball, comprising: the outer skin, the middle tire and the leakage-proof hidden air nozzle;
the outer skin is made of microfiber synthetic leather;
the middle tire comprises the following parts: butyl liner, nylon thread and high-elasticity foamed rubber.
As a further improvement of the technical scheme, the microfiber synthetic leather comprises the following raw materials: the super-fine fiber, 40-60 parts of diamine polyurethane, 10-25 parts of nylon-66 salt and 30-45 parts of solvent have the advantages of high tearing strength and tensile strength, good air permeability and folding resistance, good cold resistance and mildew resistance, thick and full sphere, excellent gripping performance and increased ball touch feeling and anti-skid feeling.
As a further improvement of the technical scheme, the superfine fibers are one of plant fibers and animal fibers, the animal fibers are selected from at least one of spider silk, wool and seashell silk, and the animal fibers are selected from at least one of ramie, flax, kapok and jute, so that the synthetic leather has soft and fine hand feeling, good flexibility and good skid resistance, and the degree before stretching and the tear strength are improved.
As a further improvement of the technical scheme, the solvent is at least one of ethyl acetate, butyl acetate, ethylene glycol monoethyl ether acetate, ethyl acetate and oxalic acid dimethyl ether, so that the dibasic acid diamine polyurethane is conveniently dissolved.
As a further improvement of the technical scheme, the high-elasticity foamed rubber comprises the following raw materials: styrene butadiene rubber, isoprene rubber, ethylene propylene rubber, a filler and a foaming agent;
the preparation process of the high-elasticity rubber comprises the following steps: styrene butadiene rubber, isoprene rubber and ethylene propylene rubber are added into an internal mixer for plastication to prepare initial rubber, then a filler is added into the internal mixer to prepare reinforcing rubber, then a foaming agent is added into the internal mixer for mixing, and then the high-elasticity foamed rubber is prepared by extrusion.
As a further improvement of the technical scheme, the filling agent is one or more of stearic acid, oxidability, talcum powder and zeolite powder, so that the production cost is saved, the characteristics of the rubber are reinforced, and the elasticity of the rubber is improved.
As a further improvement of the technical scheme, the foaming agent is selected from one or more of sodium bicarbonate, ammonium bicarbonate, sodium chloride and azodicarbonamide.
On the other hand, the invention provides a preparation process of a microfiber synthetic leather-based lagging basketball, which comprises any one of the microfiber synthetic leather-based lagging basketballs, and comprises the following operation steps:
s1, adding the diamine dibasic acid polyurethane and the nylon-66 salt into a stirring kettle, heating and stirring;
s2, adding a solvent, cooling, and defoaming in vacuum to obtain a coating solution;
s3, adding the coating liquid into an impregnator, then repeatedly impregnating the superfine fibers, and drying to obtain the superfine synthetic leather;
s4, attaching high-elasticity rubber to the surface of the butyl liner to prepare a middle tire, and winding a nylon wire on the surface of the middle tire;
s5, communicating the leak-proof hidden air tap with the butyl liner, and attaching the cross rib groove around the surface of the middle tire;
and S6, dividing the superfine synthetic leather into 8 pieces, and attaching the pieces to the surface of the middle tire respectively to obtain the finished basketball.
Preferably, in S1, the temperature is raised to 150 ℃ and 180 ℃, the stirring time is 10-15min, and in S2, the temperature is lowered to 50-110 ℃.
Preferably, in the step S6, the specification of the finished basketball is No. 7, the circumference is 749-.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the microfiber synthetic leather-based leather-attached basketball and the preparation process thereof, the microfiber synthetic leather is used as the outer skin, so that the prepared basketball is high in tear strength and tensile strength, good in air permeability and folding resistance, good in cold resistance and mildew resistance, thick, full and plumpy, excellent in gripping performance, and capable of increasing ball contact feeling and anti-skid feeling.
2. According to the microfiber-based synthetic leather-covered basketball and the preparation process thereof, the high-elasticity foamed rubber is added into the middle tyre, so that the prepared basketball has high elasticity, very good mechanical strength, and good flexibility, shock resistance and creep resistance.
Drawings
Fig. 1 is an overall flow chart of embodiment 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1 is a leather-covered basketball based on microfiber synthetic leather and a preparation process thereof, including:
preparation of microfiber synthetic leather
Adding 60 parts of diamine dibasic acid polyurethane and 10 parts of nylon-66 salt into a stirring kettle, heating to 150 ℃ and 180 ℃, and stirring for 10-15 min; then adding 30 parts of solvent, cooling to 50-110 ℃, and defoaming in vacuum to prepare coating liquid; and adding the coating solution into an impregnator, then adding superfine fibers for repeated impregnation, and drying to obtain the superfine synthetic leather.
Second, preparation of middle tyre
Adding styrene-butadiene rubber, isoprene rubber and ethylene propylene rubber into an internal mixer for plastication to prepare initial rubber, adding a filler into the internal mixer to prepare reinforcing rubber, adding a foaming agent into the internal mixer for mixing, and extruding to prepare high-elasticity foamed rubber;
the high-elasticity rubber is attached to the surface of the butyl liner to prepare the middle tire, and then the nylon wire is wound on the surface of the middle tire.
Thirdly, preparation of finished product
Connecting the leak-proof hidden air tap with the butyl liner, and fitting the cross rib groove around the surface of the middle tire; the superfine synthetic leather is divided into 8 pieces and then respectively attached to the surfaces of the middle tires to obtain a finished basketball, wherein the specification of the finished basketball is No. 7, the circumference is 749-762mm, and the weight is 567-623 g.
Embodiment 2 is based on super fine synthetic leather veneer basketball and preparation technology thereof, including:
preparation of microfiber synthetic leather
Adding 55 parts of diamine polyurethane diacid and 145 parts of nylon-66 salt into a stirring kettle, heating to 150 ℃ and 180 ℃, and stirring for 10-15 min; then adding 34 parts of solvent, cooling to 50-110 ℃, and defoaming in vacuum to prepare coating liquid; and adding the coating solution into an impregnator, then adding superfine fibers for repeated impregnation, and drying to obtain the superfine synthetic leather.
Second, preparation of middle tyre
Adding styrene-butadiene rubber, isoprene rubber and ethylene propylene rubber into an internal mixer for plastication to prepare initial rubber, adding a filler into the internal mixer to prepare reinforcing rubber, adding a foaming agent into the internal mixer for mixing, and extruding to prepare high-elasticity foamed rubber;
the high-elasticity rubber is attached to the surface of the butyl liner to prepare the middle tire, and then the nylon wire is wound on the surface of the middle tire.
Thirdly, preparation of finished product
Connecting the leak-proof hidden air tap with the butyl liner, and fitting the cross rib groove around the surface of the middle tire; the superfine synthetic leather is divided into 8 pieces and then respectively attached to the surfaces of the middle tires to obtain a finished basketball, wherein the specification of the finished basketball is No. 7, the circumference is 749-762mm, and the weight is 567-623 g.
Example 3 is a leather-covered basketball based on microfiber synthetic leather and a preparation process thereof, including:
preparation of microfiber synthetic leather
Adding 50 parts of diamine dibasic acid polyurethane and 17.5 parts of nylon-66 salt into a stirring kettle, heating to 150 ℃ and 180 ℃, and stirring for 10-15 min; then adding 37.5 parts of solvent, cooling to 50-110 ℃, and defoaming in vacuum to prepare coating liquid; and adding the coating solution into an impregnator, then adding superfine fibers for repeated impregnation, and drying to obtain the superfine synthetic leather.
Second, preparation of middle tyre
Adding styrene-butadiene rubber, isoprene rubber and ethylene propylene rubber into an internal mixer for plastication to prepare initial rubber, adding a filler into the internal mixer to prepare reinforcing rubber, adding a foaming agent into the internal mixer for mixing, and extruding to prepare high-elasticity foamed rubber;
the high-elasticity rubber is attached to the surface of the butyl liner to prepare the middle tire, and then the nylon wire is wound on the surface of the middle tire.
Thirdly, preparation of finished product
Connecting the leak-proof hidden air tap with the butyl liner, and fitting the cross rib groove around the surface of the middle tire; the superfine synthetic leather is divided into 8 pieces and then respectively attached to the surfaces of the middle tires to obtain a finished basketball, wherein the specification of the finished basketball is No. 7, the circumference is 749-762mm, and the weight is 567-623 g.
Example 4 is a leather-covered basketball based on microfiber synthetic leather and a preparation process thereof, including:
preparation of microfiber synthetic leather
Adding 45 parts of diamine polyurethane dibasic acid and 21.5 parts of nylon-66 salt into a stirring kettle, heating to 150 ℃ and 180 ℃, and stirring for 10-15 min; then adding 41.5 parts of solvent, cooling to 50-110 ℃, and defoaming in vacuum to prepare coating liquid; and adding the coating solution into an impregnator, then adding superfine fibers for repeated impregnation, and drying to obtain the superfine synthetic leather.
Second, preparation of middle tyre
Adding styrene-butadiene rubber, isoprene rubber and ethylene propylene rubber into an internal mixer for plastication to prepare initial rubber, adding a filler into the internal mixer to prepare reinforcing rubber, adding a foaming agent into the internal mixer for mixing, and extruding to prepare high-elasticity foamed rubber;
the high-elasticity rubber is attached to the surface of the butyl liner to prepare the middle tire, and then the nylon wire is wound on the surface of the middle tire.
Thirdly, preparation of finished product
Connecting the leak-proof hidden air tap with the butyl liner, and fitting the cross rib groove around the surface of the middle tire; the superfine synthetic leather is divided into 8 pieces and then respectively attached to the surfaces of the middle tires to obtain a finished basketball, wherein the specification of the finished basketball is No. 7, the circumference is 749-762mm, and the weight is 567-623 g.
Example 5 is a leather-covered basketball based on microfiber synthetic leather and a preparation process thereof, comprising:
preparation of microfiber synthetic leather
Adding 40 parts of diamine polyurethane dibasic acid and 25 parts of nylon-66 salt into a stirring kettle, heating to 150 ℃ and 180 ℃, and stirring for 10-15 min; then adding 45 parts of solvent, cooling to 50-110 ℃, and defoaming in vacuum to prepare coating liquid; and adding the coating solution into an impregnator, then adding superfine fibers for repeated impregnation, and drying to obtain the superfine synthetic leather.
Second, preparation of middle tyre
Adding styrene-butadiene rubber, isoprene rubber and ethylene propylene rubber into an internal mixer for plastication to prepare initial rubber, adding a filler into the internal mixer to prepare reinforcing rubber, adding a foaming agent into the internal mixer for mixing, and extruding to prepare high-elasticity foamed rubber;
the high-elasticity rubber is attached to the surface of the butyl liner to prepare the middle tire, and then the nylon wire is wound on the surface of the middle tire.
Thirdly, preparation of finished product
Connecting the leak-proof hidden air tap with the butyl liner, and fitting the cross rib groove around the surface of the middle tire; the superfine synthetic leather is divided into 8 pieces and then respectively attached to the surfaces of the middle tires to obtain a finished basketball, wherein the specification of the finished basketball is No. 7, the circumference is 749-762mm, and the weight is 567-623 g.
In the above, the superfine fiber is one of plant fiber and animal fiber, the animal fiber is selected from at least one of spider silk, wool and sea shell silk, and the animal fiber is selected from at least one of ramie, flax, kapok and jute, so that the synthetic leather has soft and fine hand feeling, good flexibility and good skid resistance, and the degree before stretching and the tear strength are improved;
the solvent is at least one of ethyl acetate, butyl acetate, ethylene glycol monoethyl ether acetate, ethyl acetate and oxalic acid dimethyl ether, so that the dibasic acid diamine polyurethane can be conveniently dissolved;
the filling agent is selected from one or more of stearic acid, oxidability, talcum powder and zeolite powder, so that the production cost is saved, and meanwhile, the characteristics of the rubber are reinforced, and the elasticity of the rubber is improved;
the foaming agent is selected from one or more of sodium bicarbonate, ammonium bicarbonate, sodium chloride and azodicarbonamide.
The elasticity of the super-fiber-based synthetic leather-covered basketball prepared by the invention is improved, and the tensile strength and the tear strength are enhanced, and the super-fiber-based synthetic leather-covered basketball prepared by the invention is specifically shown in a table 1:
TABLE 1
According to table 1, in examples 1-5, the basketball prepared by the invention has resilience of about 70% and good elasticity, and when the microfiber synthetic leather comprises 40 parts of diamine polyurethane, 25 parts of nylon-66 salt and 45 parts of solvent, the tensile strength, peel strength and tear strength of the outer skin are highest, so that the microfiber synthetic leather-based lagging basketball prepared by the material dosage in example 3 has better comprehensive performance.
Comparative example 1 a skinned basketball and process for making the same, comprising:
preparation of microfiber synthetic leather
Adding 50 parts of diamine dibasic acid polyurethane and 17.5 parts of nylon-66 salt into a stirring kettle, heating to 150 ℃ and 180 ℃, and stirring for 10-15 min; then adding 37.5 parts of solvent, cooling to 50-110 ℃, and defoaming in vacuum to prepare coating liquid; and adding the coating solution into an impregnator, then putting the base fabric into the impregnator for repeated impregnation, and drying to obtain the PU synthetic leather.
Second, preparation of middle tyre
Adding styrene-butadiene rubber, isoprene rubber and ethylene propylene rubber into an internal mixer for plastication to prepare initial rubber, adding a filler into the internal mixer to prepare reinforcing rubber, adding a foaming agent into the internal mixer for mixing, and extruding to prepare high-elasticity foamed rubber;
the high-elasticity rubber is attached to the surface of the butyl liner to prepare the middle tire, and then the nylon wire is wound on the surface of the middle tire.
Thirdly, preparation of finished product
Connecting the leak-proof hidden air tap with the butyl liner, and fitting the cross rib groove around the surface of the middle tire; the superfine synthetic leather is divided into 8 pieces and then respectively attached to the surfaces of the middle tires to obtain a finished basketball, wherein the specification of the finished basketball is No. 7, the circumference is 749-762mm, and the weight is 567-623 g.
Comparative example 2 a leather-attached basketball based on microfiber synthetic leather and a process for making the same, comprising:
preparation of microfiber synthetic leather
Adding 50 parts of diamine dibasic acid polyurethane and 17.5 parts of nylon-66 salt into a stirring kettle, heating to 150 ℃ and 180 ℃, and stirring for 10-15 min; then adding 37.5 parts of solvent, cooling to 50-110 ℃, and defoaming in vacuum to prepare coating liquid; and adding the coating solution into an impregnator, then adding superfine fibers for repeated impregnation, and drying to obtain the superfine synthetic leather.
Secondly, preparation of finished products
Winding a nylon wire on the surface of the middle tire, then connecting the leak-proof dark air nozzle with the butyl liner, and attaching the cross rib groove around the surface of the middle tire; the superfine synthetic leather is divided into 8 pieces and then respectively attached to the surfaces of the middle tires to obtain a finished basketball, wherein the specification of the finished basketball is No. 7, the circumference is 749-762mm, and the weight is 567-623 g.
The microfiber synthetic leather-based leather-covered basketball prepared by the invention has good elasticity, good tensile strength and tear resistance, and a great relationship with microfiber synthetic leather and high-elasticity foamed rubber added into the basketball, and in order to verify the related technical scheme, the applicant performs the following tests:
comparative examples 1 to 2: by adopting the method of the embodiment 3, the prepared PU leather basketball with the leather is detected according to the relevant indexes under the condition of taking out the microfiber synthetic leather and the high-elasticity foamed rubber, and the indexes are shown in the table 2:
TABLE 2
As shown in table 2, in comparative example 1, the peel strength, tensile strength and tear strength of the outer skin were significantly reduced when the microfiber synthetic leather was changed to the ordinary PU leather, and in comparative example 2, the rebound resilience and reduction of the basketball were significantly reduced when the high-elasticity foamed rubber was removed, and the basketball was significantly insufficient compared to example 3, so that the microfiber synthetic leather and the high-elasticity foamed rubber were found to be important factors for changing the elasticity, tensile strength and tear property of the PU skinned basketball.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A microfiber synthetic leather-attached basketball based on comprises the following components: the outer skin, the middle tire and the leakage-proof hidden air nozzle;
the outer skin is made of microfiber synthetic leather;
the middle tire comprises the following parts: butyl liner, nylon thread and high-elasticity foamed rubber.
2. The microfiber-based synthetic leather-covered basketball of claim 1, wherein: the microfiber synthetic leather comprises the following raw materials: superfine fiber, 40-60 parts of diamine polyurethane, 10-25 parts of nylon-66 salt, 30-45 parts of solvent and the balance of deionized water.
3. The microfiber-based synthetic leather-covered basketball of claim 2, wherein: the superfine fiber is one of plant fiber and animal fiber, the animal fiber is selected from at least one of spider silk, wool and sea shell silk, and the animal fiber is selected from at least one of ramie, flax, kapok and jute.
4. The microfiber-based synthetic leather-covered basketball of claim 2, wherein: the solvent is at least one of ethyl acetate, butyl acetate, ethylene glycol ethyl ether acetate, ethyl acetate and dimethyl oxalate.
5. The microfiber-based synthetic leather-covered basketball of claim 1, wherein: the high-elasticity foamed rubber comprises the following raw materials: styrene butadiene rubber, isoprene rubber, ethylene propylene rubber, a filler and a foaming agent;
the preparation process of the high-elasticity rubber comprises the following steps: adding styrene-butadiene rubber, isoprene rubber and ethylene propylene rubber into an internal mixer for plastication to prepare initial rubber, adding a filler into the internal mixer to prepare reinforcing rubber, adding a foaming agent into the internal mixer for mixing, and extruding to prepare the high-elasticity foamed rubber.
6. The microfiber-based synthetic leather-covered basketball of claim 5, wherein: the filler is one or more of stearic acid, oxidability, talcum powder and zeolite powder.
7. The microfiber-based synthetic leather-covered basketball of claim 5, wherein: the foaming agent is selected from one or more of sodium bicarbonate, ammonium bicarbonate, sodium chloride and azodicarbonamide.
8. The preparation process of the microfiber-based synthetic leather covered basketball, which comprises the microfiber-based synthetic leather covered basketball of any one of claims 1-7, and is characterized by comprising the following operation steps:
s1, adding the diamine dibasic acid polyurethane and the nylon-66 salt into a stirring kettle, heating and stirring;
s2, adding a solvent, cooling, and defoaming in vacuum to obtain a coating solution;
s3, adding the coating liquid into an impregnator, then repeatedly impregnating the superfine fibers, and drying to obtain the superfine synthetic leather;
s4, attaching high-elasticity rubber to the surface of the butyl liner to prepare a middle tire, and winding a nylon wire on the surface of the middle tire;
s5, communicating the leak-proof hidden air tap with the butyl liner, and attaching the cross rib groove around the surface of the middle tire;
and S6, dividing the superfine synthetic leather into 8 pieces, and attaching the pieces to the surface of the middle tire respectively to obtain the finished basketball.
9. The process for preparing the microfiber synthetic leather-based leather-covered basketball according to claim 8, wherein the process comprises the following steps: in the step S1, the temperature is increased by 150 ℃ and 180 ℃, the stirring time is 10-15min, and in the step S2, the temperature is reduced by 50-110 ℃.
10. The process for preparing the microfiber synthetic leather-based leather-covered basketball according to claim 8, wherein the process comprises the following steps: in the S6, the specification of the finished basketball is No. 7, the circumference is 749 + 762mm, and the weight is 567 + 623 g.
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|---|---|---|---|---|
| CN2415793Y (en) * | 2000-02-24 | 2001-01-24 | 杨三福 | Volleyball with superfine fibre foam sponge layer structure |
| CN1824348A (en) * | 2005-02-21 | 2006-08-30 | 三芳化学工业股份有限公司 | Ball surface and method of preparing ball surface |
| WO2007081945A1 (en) * | 2006-01-09 | 2007-07-19 | The Dial Corporation | Dryer device with end of use indicator |
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Application publication date: 20210618 |