Composite material for preparing dumbbell and method for manufacturing dumbbell by using same

Abstract

The invention discloses a composite material for preparing a dumbbell. The composite material comprises a main body raw material and a coating raw material, the main body raw material comprises the following components in parts by weight: 0.05-2 parts of a 3D framework material and 80-100 parts of a filling material; the 3D framework material is composed of glass fibers, carbon fibers and aramid fibers; the filler is composed of cement and lime; the coating raw material is prepared from the following components in parts by weight: 10 to 20 parts of poly (p-phenylene terephthamide), 30 to 60 parts of polyethylene terephthalate, 30 to 60 parts of polyurethane, 2 to 5 parts of antioxidant and 0.5 to 3 parts of copper nonylphenol sulfonate. The material has the advantages of impact resistance, antibiosis and mildew resistance, long service life, fatigue resistance and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of dumbbell preparation, and in particular to a composite material for preparing dumbbells and a method for preparing dumbbells by using the composite material. Background Art

[0002] Dumbbells are a simple piece of equipment used to enhance muscle strength training. Its main material is cast iron, and some are covered with a layer of rubber. Cast iron dumbbells require high-temperature smelting during the production process, which consumes a lot of energy and iron resources, seriously pollutes the environment, and cast iron dumbbells are relatively expensive and have high usage costs. Recycled materials are one of the main products of the comprehensive utilization of waste materials. They not only reduce the cost of raw materials and improve economic benefits, but also play a great role in saving resources and protecting the environment. They are the embodiment of circular economy in the materials industry.

[0003] When using dumbbells, the palms of the hands will secrete sweat. After use, the sweat on the palms will remain on the dumbbells, making it easy for bacteria and mold to grow on the surface of the dumbbells, affecting the health of the user. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a composite material for preparing dumbbells, which has the capabilities of impact resistance, antibacterial and mildew resistance, long service life, fatigue resistance and low cost.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a composite material for preparing dumbbells, comprising a main raw material and a coating raw material; The main raw material comprises the following components in parts by weight: 0.05-2 parts of 3D skeleton material and 80-100 parts of filler; The 3D skeleton material is composed of glass fiber, carbon fiber and aramid fiber; The filler is composed of cement and lime; The coating raw material comprises the following components in parts by weight: 10-20 parts of poly(p-phenylene terephthalamide), 30-60 parts of polyethylene terephthalate, 30-60 parts of polyurethane, 2-5 parts of antioxidant and 0.5-3 parts of copper nonylphenol sulfonate.

[0006] Furthermore, the 3D skeleton material is composed of 5-10 parts of glass fiber, 20-30 parts of carbon fiber and 40-60 parts of aramid fiber.

[0007] Furthermore, the 3D skeleton material is woven from blended yarns of glass fiber, carbon fiber and aramid fiber; the blended yarns are used to produce a tubular fabric in the middle and 3D mesh fabrics at both ends on a three-dimensional loom; and the 3D mesh fabrics are fixed at both ends of the tubular fabric.

[0008] Furthermore, the antioxidant is antioxidant 215.

[0009] Furthermore, the coating raw materials also include 5-10 parts of pigeon pea leaf extract and 5-10 parts of chitosan.

[0010] Furthermore, the weight ratio of cement to lime is 2:1.

[0011] The present invention also provides a method for preparing a dumbbell using the dumbbell composite material, comprising the following steps: Preparation of filler: Mix cement and lime by weight and then mix with purified water, wherein the purified water accounts for 0.2-0.5 times the total weight of the filler; Preparation of 3D skeleton material: glass fiber, carbon fiber and aramid fiber are used on a three-dimensional loom to manufacture a tubular fabric in the middle and 3D mesh fabrics at both ends; 3D mesh fabrics are fixed at both ends of the tubular fabric to form a 3D skeleton body; Preparation of dumbbell body: Place the 3D skeleton body prepared in step (2) into the dumbbell body forming mold, and pour the filling material prepared in step (1) into the mold; Preparation of coating material: poly(p-phenylene terephthalamide), polyethylene terephthalate, polyurethane, antioxidant and copper nonylphenol sulfonate are mixed in proportion; Molding: Spray the coating material prepared in step (4) onto the dumbbell body prepared in step (3).

[0012] Furthermore, pigeon pea leaf extract and chitosan are added in step (4).

[0013] The beneficial effects of the present invention are: The dumbbell composite material of the present invention is composed of a main body raw material and a coating raw material; the main body raw material is composed of a filling material and a 3D skeleton material; the present invention coats the filling material outside the 3D skeleton material; the strength of the entire dumbbell body is improved, and the coating material coated outside the dumbbell body has good antibacterial performance, thereby improving the anti-mildew effect of the dumbbell. DETAILED DESCRIPTION

[0014] The technical solution of the present invention will be clearly and completely described below through specific implementation methods. Example

[0015] A composite material for preparing a dumbbell in this embodiment includes a main body material and a coating material; The main raw material includes the following components by weight: 0.05 parts of 3D skeleton material and 80 parts of filler; The 3D skeleton material is composed of 5 parts of glass fiber, 20 parts of carbon fiber and 40 parts of aramid fiber; The filler is composed of cement and lime; the weight ratio of cement to lime is 2:1.

[0016] The coating raw material comprises the following components in parts by weight: 10 parts of poly(p-phenylene terephthalamide), 30 parts of polyethylene terephthalate, 30 parts of polyurethane, 2 parts of antioxidant, and 0.5 parts of copper nonylphenol sulfonate. The antioxidant is antioxidant 215.

[0017] The 3D skeleton material is woven from blended yarns of glass fiber, carbon fiber and aramid fiber; the blended yarns are used on a three-dimensional loom to produce a tubular fabric in the middle and 3D mesh fabrics at both ends; and the 3D mesh fabrics are fixed at both ends of the tubular fabric. Example

[0018] A composite material for preparing a dumbbell in this embodiment includes a main body material and a coating material; The main raw material includes the following components by weight: 2 parts of 3D skeleton material and 100 parts of filler material; The 3D skeleton material is composed of 10 parts of glass fiber, 30 parts of carbon fiber and 60 parts of aramid fiber. The 3D skeleton material is woven from blended yarns of glass fiber, carbon fiber and aramid fiber; the blended yarns are used to make a tubular fabric in the middle and 3D mesh fabrics at both ends on a three-dimensional loom; the 3D mesh fabrics are fixed at both ends of the tubular fabric.

[0019] The filler is composed of cement and lime; the weight ratio of cement to lime is 2:1.

[0020] The coating raw material comprises the following components in parts by weight: 20 parts of poly(p-phenylene terephthalamide), 60 parts of polyethylene terephthalate, 60 parts of polyurethane, 5 parts of antioxidant, and 3 parts of copper nonylphenol sulfonate. The antioxidant is antioxidant 215. Example

[0021] A composite material for preparing a dumbbell in this embodiment includes a main body material and a coating material; The main raw material comprises the following components by weight: 1 part of 3D skeleton material and 90 parts of filler material; The 3D skeleton material is composed of 5-10 parts of glass fiber, 20-30 parts of carbon fiber and 40-60 parts of aramid fiber. The 3D skeleton material is woven from blended yarns of glass fiber, carbon fiber and aramid fiber; the blended yarns are used to make a tubular fabric in the middle and 3D mesh fabrics at both ends on a three-dimensional loom; the 3D mesh fabrics are fixed at both ends of the tubular fabric.

[0022] The filler is composed of cement and lime; The coating raw material comprises the following components in parts by weight: 15 parts of poly(p-phenylene terephthalamide), 40 parts of polyethylene terephthalate, 40 parts of polyurethane, 3 parts of antioxidant, and 2 parts of copper nonylphenol sulfonate. The antioxidant is antioxidant 215. Example

[0023] A composite material for preparing a dumbbell in this embodiment includes a main body material and a coating material; The main raw material comprises the following components by weight: 0.6 parts of 3D skeleton material and 85 parts of filler; The 3D skeleton material is composed of 8 parts of glass fiber, 25 parts of carbon fiber and 50 parts of aramid fiber. The 3D skeleton material is woven from blended yarns of glass fiber, carbon fiber and aramid fiber; the blended yarns are used to make a tubular fabric in the middle and 3D mesh fabrics at both ends on a three-dimensional loom; the 3D mesh fabrics are fixed at both ends of the tubular fabric.

[0024] The filler is composed of cement and lime; the weight ratio of cement to lime is 2:1.

[0025] The coating raw material comprises the following components in parts by weight: 15 parts of poly(p-phenylene terephthalamide), 45 parts of polyethylene terephthalate, 45 parts of polyurethane, 4 parts of antioxidant, 1 part of copper nonylphenol sulfonate, 6 parts of pigeon pea leaf extract and 8 parts of chitosan. The antioxidant is antioxidant 215. Example

[0026] A method for preparing a dumbbell using a dumbbell composite material according to the present embodiment comprises the following steps: (1) Preparation of filler: Mix cement and lime by weight and then mix with purified water, wherein the purified water accounts for 0.2-0.5 times the total weight of the filler; (2) Preparation of 3D skeleton material: Glass fiber, carbon fiber and aramid fiber are used on a three-dimensional loom to manufacture a tubular fabric in the middle and 3D mesh fabrics at both ends; 3D mesh fabrics are fixed at both ends of the tubular fabric to form a 3D skeleton body; (3) Main body preparation: Place the 3D skeleton body prepared in step (2) into the dumbbell main body molding mold, and pour the filling material prepared in step (1) into the mold; (4) Preparation of coating material: poly(p-phenylene terephthalamide), polyethylene terephthalate, polyurethane, antioxidant and copper nonylphenol sulfonate are mixed in proportion; (5) Molding: Spray the coating material prepared in step (4) onto the outside of the dumbbell body prepared in step (3). Example

[0027] A method for preparing a dumbbell using a dumbbell composite material according to the present embodiment comprises the following steps: (1) Preparation of filler: Mix cement and lime by weight and then mix with purified water, wherein the purified water accounts for 0.2-0.5 times the total weight of the filler; (2) Preparation of 3D skeleton material: Glass fiber, carbon fiber and aramid fiber are used on a three-dimensional loom to manufacture a tubular fabric in the middle and 3D mesh fabrics at both ends; 3D mesh fabrics are fixed at both ends of the tubular fabric to form a 3D skeleton body; (3) Preparation of dumbbell body: Place the 3D skeleton body prepared in step (2) into the dumbbell body forming mold, and pour the filling material prepared in step (1) into the mold; (4) Preparation of coating material: poly(p-phenylene terephthalamide), polyethylene terephthalate, polyurethane, antioxidant, copper nonylphenol sulfonate, pigeon pea leaf extract and chitosan are mixed in proportion; (5) Molding: Spray the coating material prepared in step (4) onto the outside of the dumbbell body prepared in step (3).

[0028] The dumbbell composite material of the present invention is composed of a main body raw material and a coating raw material; the main body raw material is composed of a filling material and a 3D skeleton material; the present invention coats the filling material outside the 3D skeleton material; the strength of the entire dumbbell body is improved, and the coating material coated outside the dumbbell body has good antibacterial performance, thereby improving the anti-mildew effect of the dumbbell.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A composite material for preparing dumbbells, characterized in that: Including main raw materials and coating raw materials; The main raw materials include the following components in parts by weight: 0.05-2 parts of 3D skeleton material and 80-100 parts of filler; The 3D skeleton material is composed of glass fiber, carbon fiber and aramid fiber; The filler is composed of cement and lime; The coating raw material comprises the following components in parts by weight: 10-20 parts of poly(p-phenylene terephthalamide), 30-60 parts of polyethylene terephthalate, 30-60 parts of polyurethane, 2-5 parts of antioxidant and 0.5-3 parts of copper nonylphenol sulfonate.

2. The composite material for preparing dumbbells according to claim 1, characterized in that: The 3D skeleton material is composed of 5-10 parts of glass fiber, 20-30 parts of carbon fiber and 40-60 parts of aramid fiber.

3. The composite material for preparing dumbbells according to claim 2, characterized in that: The 3D skeleton material is woven from blended yarns of glass fiber, carbon fiber and aramid fiber; the blended yarns are used to manufacture a tubular fabric in the middle and 3D mesh fabrics at both ends on a three-dimensional loom; and the 3D mesh fabrics are fixed at both ends of the tubular fabric.

4. The composite material for preparing dumbbells according to claim 1, characterized in that: The antioxidant is antioxidant 215.

5. The composite material for preparing dumbbells according to claim 1, characterized in that: The coating raw materials also include 5-10 parts of pigeon pea leaf extract and 5-10 parts of chitosan.

6. The composite material for preparing dumbbells according to claim 1, characterized in that: The weight ratio of the cement to the lime is 2:

1.

7. A method for preparing a dumbbell using the composite material of dumbbell according to claim 1, characterized in that: The steps include: Preparation of filler: Mix cement and lime by weight and then mix with purified water, wherein the purified water accounts for 0.2-0.5 times the total weight of the filler; Preparation of 3D skeleton material: glass fiber, carbon fiber and aramid fiber are used on a three-dimensional loom to manufacture a tubular fabric in the middle and 3D mesh fabrics at both ends; 3D mesh fabrics are fixed at both ends of the tubular fabric to form a 3D skeleton body; Preparation of dumbbell body: Place the 3D skeleton body prepared in step (2) into the dumbbell body forming mold, and pour the filling material prepared in step (1) into the mold; Preparation of coating material: poly(p-phenylene terephthalamide), polyethylene terephthalate, polyurethane, antioxidant and copper nonylphenol sulfonate are mixed in proportion; Molding: Spray the coating material prepared in step (4) onto the dumbbell body prepared in step (3).

8. The method for preparing a dumbbell according to claim 7, characterized in that: In the step (4), pigeon pea leaf extract and chitosan are added.