High-strength basalt fiber pedal and preparation method and application thereof

Abstract

The invention provides a high-strength basalt fiber pedal and a preparation method and application thereof, and belongs to the technical field of pedals. The high-strength basalt fiber pedal provided by the invention is prepared from basalt fibers and resin slurry, the resin slurry comprises the following components in percentage by mass: 41-43% of modified unsaturated resin, 28-29% of calcium powder, 3-5% of a curing agent, 22-24% of a low shrinkage agent, 0.5-1.5% of an accelerant, 0.5-1.5% of a coupling agent and 0.1-1% of color paste, the mass ratio of the basalt fiber to the resin slurry is (1-1.5): 1. According to the basalt fiber pedal, the basalt fiber is added, and the composition and dosage of each component are controlled, so that the basalt fiber pedal has excellent mechanical properties and is light in weight.

Description

Technical Field

[0001] The present invention belongs to the technical field of foot pedals, and particularly relates to a high-strength basalt fiber foot pedal and its preparation method and application. Background Art

[0002] The existing materials of automotive foot pedals are mainly plastics, aluminum alloys, stainless steels or rubbers. However, the foot pedals in the prior art have problems such as heavy weight and low strength, thus posing great potential safety hazards during driving.

[0003] Therefore, there is an urgent need for a foot pedal that is light in weight and high in strength. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-strength basalt fiber foot pedal and its preparation method and application. The foot pedal provided by the present invention is light in weight and high in strength.

[0005] In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions: The present invention provides a high-strength basalt fiber foot pedal, which is prepared from basalt fibers and a resin slurry; by mass percentage, the resin slurry comprises the following components: 41-43% of a modified unsaturated resin, 28-29% of calcium powder, 3-5% of a curing agent, 22-24% of a low shrinkage agent, 0.5-1.5% of an accelerator, 0.5-1.5% of a coupling agent, and 0.1-1% of a color paste; the mass ratio of the basalt fibers to the resin slurry is (1-1.5):1.

[0006] Preferably, the mass ratio of the basalt fibers to the resin slurry is (1.1-1.3):1.

[0007] Preferably, the basalt fibers are continuous basalt fibers.

[0008] Preferably, the single filament diameter of the basalt fibers is 12-14 μm, and the linear density of the basalt fibers is 600-2200 tex.

[0009] Preferably, the particle size of the calcium powder is 80-100 mesh.

[0010] Preferably, the curing agent comprises at least one of ethylenediamine, methyl ethyl ketone peroxide, cyclohexanone peroxide, methyl isobutyl ketone peroxide, cumene hydroperoxide, tert-butyl hydroperoxide, 2,4-dichlorobenzoyl peroxide, and lauroyl peroxide.

[0011] Preferably, the accelerator comprises at least one of benzoyl peroxide, acetyl peroxide, and N,N-dimethylethanolamine.

[0012] The present invention also provides a method for preparing the high-strength basalt fiber footrest described in the above technical solution, including: impregnating basalt fibers with a resin slurry and then performing pultrusion molding to obtain a high-strength basalt fiber footrest.

[0013] Preferably, the temperature of the pultrusion molding is 145-150°C, and the time of the pultrusion molding is 3-5 minutes.

[0014] The present invention also provides the application of the high-strength basalt fiber footrest described in the above technical solution or the high-strength basalt fiber footrest prepared according to the preparation method described in the above technical solution in an automobile.

[0015] The present invention provides a high-strength basalt fiber footrest, which is prepared from basalt fibers and a resin slurry; by mass percentage, the resin slurry includes the following components: modified unsaturated resin 41-43%, calcium powder 28-29%, curing agent 3-5%, low shrinkage agent 22-24%, accelerator 0.5-1.5%, coupling agent 0.5-1.5%, and color paste 0.1-1%; the mass ratio of the basalt fibers to the resin slurry is (1-1.5):1. The present invention adds basalt fibers and controls the composition and dosage of each component, so that the basalt fiber footrest has excellent mechanical properties and is light in weight at the same time. The results of the examples show that the yield strength of the basalt fiber footrest provided by the present invention is ≥185 MPa, the tensile strength is ≥215 MPa, the elongation at break is ≥8.2%, the Poisson's ratio is 0.25, and the strength retention rate is ≥95% after 1000 h of cycling in a salt spray environment. Detailed Embodiments

[0016] The present invention provides a high-strength basalt fiber footrest, which is prepared from basalt fibers and a resin slurry; by mass percentage, the resin slurry includes the following components: modified unsaturated resin 41-43%, calcium powder 28-29%, curing agent 3-5%, low shrinkage agent 22-24%, accelerator 0.5-1.5%, coupling agent 0.5-1.5%, and color paste 0.1-1%; the mass ratio of the basalt fibers to the resin slurry is (1-1.5):1.

[0017] Unless otherwise specified, the present invention has no special limitation on the sources of each raw material, and commercially available products well-known to those skilled in the art can be used.

[0018] The raw materials for preparing the high-strength basalt fiber footrest of the present invention include basalt fibers.

[0019] In the present invention, the basalt fiber is preferably continuous basalt fiber, more preferably continuous basalt fiber untwisted yarn; the single filament diameter of the basalt fiber is preferably 12 - 14 μm, more preferably 13 μm; the linear density of the basalt fiber is preferably 600 - 2200 tex. By controlling the parameters of the basalt fiber within the above ranges, the mechanical properties of the footrest can be further improved.

[0020] The raw materials for preparing the high-strength basalt fiber footrest of the present invention further include resin sizing.

[0021] By mass percentage, the resin sizing of the present invention includes 41 - 43% of modified unsaturated resin, more preferably 42%. By controlling the dosage of the modified unsaturated resin within the above ranges, the mechanical properties of the footrest can be further improved.

[0022] In the present invention, the modified unsaturated resin is preferably JP-6707 from Foshan Jixin Plastic Chemical Industry and Commerce Bank.

[0023] By mass percentage, the resin sizing of the present invention includes 28 - 29% of calcium powder. In the embodiments of the present invention, the dosage of the calcium powder can specifically be 28.1%, 28.2%, 28.3%, 28.4%, 28.5%, 28.6%, 28.7%, 28.8%, 28.9% or 29%.

[0024] In the present invention, the particle size of the calcium powder is preferably 80 - 100 mesh. By controlling the particle size and dosage of the calcium powder within the above ranges, the mechanical properties of the footrest can be further improved.

[0025] The present invention has no special limitation on the source of the calcium powder, and commercially available products well-known to those skilled in the art can be used.

[0026] By mass percentage, the resin sizing of the present invention includes 3 - 5% of curing agent, preferably 3.5 - 4.5%, more preferably 4%. By controlling the dosage of the curing agent within the above ranges, the mechanical properties of the footrest can be further improved.

[0027] In the present invention, the curing agent preferably includes at least one of ethylenediamine, methyl ethyl ketone peroxide, cyclohexanone peroxide, methyl isobutyl ketone peroxide, cumene hydroperoxide, tert-butyl hydroperoxide, 2,4-dichlorobenzoyl peroxide and lauroyl peroxide, more preferably ethylenediamine. By using ethylenediamine as the curing agent in the present invention, the mechanical properties of the footrest can be further improved compared with other curing agents.

[0028] By mass percentage, the resin slurry of the present invention comprises 22-24% of a low shrinkage agent, preferably 22.5-23.5%, more preferably 23%. By controlling the dosage of the low shrinkage agent within the above range, the mechanical properties of the footrest can be further improved.

[0029] In the present invention, the low shrinkage agent is preferably JP-6730 from Foshan Jixin Plastic Chemical Industry and Commerce Bank.

[0030] By mass percentage, the resin slurry of the present invention comprises 0.5-1.5% of a promoter, preferably 0.8-1.2%, more preferably 1.0%.

[0031] In the present invention, the promoter preferably comprises at least one of benzoyl peroxide, acetyl peroxide and N,N-dimethylethanolamine.

[0032] By using the above types of promoters and controlling their dosages, the mechanical properties of the footrest can be further improved, and the color of the later color paste will not be affected.

[0033] By mass percentage, the resin slurry of the present invention comprises 0.5-1.5% of a coupling agent, preferably 0.8-1.2%, more preferably 1.0%. By controlling the dosage of the coupling agent within the above range, the mechanical properties of the footrest can be further improved. There is no special limitation on the source of the coupling agent in the present invention, and commercially available products well-known to those skilled in the art can be used.

[0034] By mass percentage, the resin slurry of the present invention comprises 0.1-1% of a color paste.

[0035] There is no special limitation on the specific color and source of the color paste in the present invention, and it can be selected according to actual needs.

[0036] In the present invention, the mass ratio of the basalt fiber to the resin slurry is (1-1.5):1, preferably (1.1-1.3):1, more preferably (1.2-1.3):1.

[0037] By adding basalt fiber and controlling the composition and dosage of each component in the present invention, the basalt fiber footrest has excellent mechanical properties and is lightweight at the same time.

[0038] The present invention also provides a method for preparing the high-strength basalt fiber footrest according to the above technical solution, comprising: impregnating the basalt fiber with the resin slurry and then performing pultrusion molding to obtain the high-strength basalt fiber footrest.

[0039] There is no special limitation on the impregnation operation in the present invention, and technical solutions well-known to those skilled in the art can be used.

[0040] In the present invention, the temperature of pultrusion is preferably 145 - 150 °C; the time of pultrusion is preferably 3 - 5 min, more preferably 4 min. By controlling the temperature and time of pultrusion within the above ranges, the mechanical properties of the footrest can be further improved.

[0041] The present invention has no special limitation on the size and shape of the footrest, and it can be selected according to actual needs.

[0042] The preparation method of the present invention is simple.

[0043] The present invention also provides the application of the high-strength basalt fiber footrest described in the above technical solution or the high-strength basalt fiber footrest prepared according to the preparation method described in the above technical solution in an automobile.

[0044] The present invention has no special limitation on the operation of the application, and the technical solutions of the application well-known to those skilled in the art can be adopted.

[0045] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the embodiments in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts belong to the scope of protection of the present invention.

[0046] Example 1 A high-strength basalt fiber footrest is prepared from basalt fiber and resin paste; the mass ratio of basalt fiber to resin paste is 1.22:1; The basalt fiber is continuous basalt fiber untwisted yarn; the single filament diameter of the basalt fiber is 13 μm, and the linear density of the basalt fiber is 2200 tex; By mass percentage, the resin paste is composed of the following components: modified unsaturated resin (JP-6707 from Foshan Jixin Plastic and Chemical Industry Co., Ltd.) 42%, calcium powder (80 - 100 mesh) 28.5%, curing agent (ethylenediamine) 4%, low shrinkage agent (JP-6730 from Foshan Jixin Plastic and Chemical Industry Co., Ltd.) 23%, accelerator (benzoyl peroxide) 1%, coupling agent 1% and black color paste 0.5%; The preparation method of the high-strength basalt fiber footrest is: impregnate the basalt fiber with the resin paste and then perform pultrusion at 148 °C for 4 min to obtain the high-strength basalt fiber footrest.

[0047] Example 2 A high-strength basalt fiber footrest is prepared from basalt fiber and resin paste; the mass ratio of basalt fiber to resin paste is (1 - 1.5):1; The basalt fiber is a continuous basalt fiber untwisted yarn; the single filament diameter of the basalt fiber is 13 μm, and the linear density of the basalt fiber is 2200 tex; By mass percentage, the resin sizing is composed of the following components: modified unsaturated resin (JP-6707 from Foshan Jixin Plastic Chemical Industry and Commerce) 43%, calcium powder (80-100 mesh) 28%, curing agent (ethylenediamine) 4%, low shrinkage agent (JP-6730 from Foshan Jixin Plastic Chemical Industry and Commerce) 23%, accelerator (benzoyl peroxide) 1%, coupling agent 0.5% and black color paste 0.5%; The preparation method of the high-strength basalt fiber footrest is the same as that in Example 1.

[0048] The density of the basalt fiber footrest prepared in Example 1 is 1.85 g / cm 3 , the combustion performance is AI level, the thermal conductivity is 0.04 W / (m·k), the water resistance strength is 0.10 MPa, the freeze-thaw resistance strength is 0.10 MPa, and the water absorption is 500 g / m 3 , the yield strength is 185 MPa; the tensile strength is 215 MPa; the elongation at break is 8.2%; the Poisson's ratio is 0.25; the coefficient of thermal expansion is 7×10 -6 / ℃, exposed to the ultraviolet environment (wavelength 340 nm, 60℃, power 0.89 W / (m 2 ·mm)) for 8 hours, and the strength retention rate is 95%; in the salt spray environment (35℃, sodium chloride solution concentration 50 g / L, pH value 6.7, salt spray deposition rate 1.5 mL / 80 cm 2 ·h) for 1000 h of cycling, and the strength retention rate is 95%; the thermal conductivity of the basalt fiber footrest prepared in Example 2 is 0.035 W / (m·k), the yield strength is 187 MPa; the tensile strength is 218 MPa; in the ultraviolet environment (wavelength 340 nm, 60℃, power 0.89 W / (m 2 ·mm)) for 8 hours, and the strength retention rate is 96.1%; in the salt spray environment (35℃, sodium chloride solution concentration 50 g / L, pH value 6.7, salt spray deposition rate 1.5 mL / 80 cm 2 ·h) for 1000 h of cycling, and the strength retention rate is 95.7%.

[0049] In summary, the basalt fiber footrest provided by the present invention has excellent mechanical properties.

[0050] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A high-strength basalt fiber foot pedal, characterized in that: The invention is prepared from basalt fiber and resin slurry; the resin slurry comprises the following components by mass percentage: 41-43% of modified unsaturated resin, 28-29% of calcium powder, 3-5% of curing agent, 22-24% of low shrinkage agent, 0.5-1.5% of accelerator, 0.5-1.5% of coupling agent and 0.1-1% of color paste; the mass ratio of the basalt fiber and the resin slurry is (1-1.5):

1.

2. The high-strength basalt fiber foot pedal according to claim 1, characterized in that: The mass ratio of the basalt fiber to the resin slurry is (1.1-1.3):

1.

3. The high-strength basalt fiber foot pedal according to claim 1, characterized in that: The basalt fiber is a continuous basalt fiber.

4. The high-strength basalt fiber foot pedal according to claim 1 or 3, characterized in that: The monofilament diameter of the basalt fiber is 12-14 μm, and the linear density of the basalt fiber is 600-2200 tex.

5. The basalt fiber composite material according to claim 1, characterized in that: The particle size of the calcium powder is 80-100 meshes.

6. The high-strength basalt fiber footboard according to claim 1, characterized in that: The curing agent includes at least one of ethylenediamine, methyl ethyl ketone peroxide, cyclohexanone peroxide, methyl isobutyl ketone peroxide, cumene hydroperoxide, tert-butyl hydroperoxide, 2,4-dichlorobenzoyl peroxide and dodecyl peroxide.

7. The high-strength basalt fiber foot pedal according to claim 1, characterized in that: The accelerator includes at least one of benzoyl peroxide, acetyl peroxide and N,N-dimethylethanolamine.

8. The method for preparing the high-strength basalt fiber footboard according to any one of claims 1 to 7, comprising: The basalt fiber is impregnated with resin slurry and then pultruded to obtain a high-strength basalt fiber foot pedal.

9. The preparation method according to claim 8, characterized in that: The pultrusion molding temperature is 145-150° C., and the pultrusion molding time is 3-5 minutes.

10. Use of the high-strength basalt fiber pedal according to any one of claims 1 to 7 or the high-strength basalt fiber pedal prepared by the preparation method according to claim 8 or 9 in automobiles.