Glass fiber reinforced nylon material as well as preparation method and application thereof

Abstract

The invention provides a glass fiber reinforced nylon material as well as a preparation method and application thereof, and relates to the technical field of composite material preparation. The preparation method of the glass fiber reinforced nylon material comprises the following steps: uniformly mixing low-viscosity nylon resin, semi-aromatic resin and a copper salt composite heat stabilizer to obtain a mixture, melting the mixture to obtain liquid resin, infiltrating the interior and the peripheral surface of long glass fiber with the liquid resin, and then solidifying to obtain the glass fiber reinforced nylon material. The mechanical property of the glass fiber reinforced nylon material is excellent.

Description

Technical Field

[0001] This invention relates to the field of composite material preparation technology, specifically to a glass fiber reinforced nylon material, its preparation method, and its application. Background Technology

[0002] Nylon 66, as an important engineering plastic, is widely used in the automotive, electronics, and machinery industries due to its excellent mechanical properties, heat resistance, wear resistance, and self-lubricating properties. However, pure PA66 has drawbacks such as high water absorption, poor dimensional stability, and insufficient rigidity, which limit its application in structural components. To overcome these shortcomings, glass fiber reinforcement is usually used.

[0003] Existing glass fiber reinforced nylon materials, prepared by reinforcing nylon with glass fibers, suffer from several drawbacks. Firstly, the interfacial adhesion between the glass fibers and nylon resin is weak, preventing effective transfer of load to the glass fibers. Secondly, the poor heat resistance of the single nylon resin results in the glass fiber reinforced nylon material failing to meet expected mechanical properties. Furthermore, in high-temperature applications (such as in automotive engine compartments), the nylon molecular chains are prone to thermal oxidative degradation, leading to a rapid decline in mechanical properties. Therefore, providing a glass fiber reinforced nylon material with superior mechanical properties is a pressing technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a glass fiber reinforced nylon material, its preparation method, and its application, solving the technical problem of poor mechanical properties in existing glass fiber reinforced nylon materials.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] In a first aspect, the present invention provides a method for preparing a glass fiber reinforced nylon material, comprising the following steps:

[0009] A mixture is obtained by uniformly mixing low-viscosity nylon resin, semi-aromatic resin, and copper salt composite heat stabilizer. The mixture is then melted to obtain liquid resin, which is then impregnated into the interior and outer surface of long glass fibers and then solidified to obtain glass fiber reinforced nylon material.

[0010] The above-mentioned method for preparing glass fiber reinforced nylon material involves selecting low-viscosity nylon resin, adding copper salt composite heat stabilizer, and adding semi-aromatic nylon, which can improve the mechanical properties of the composite material, such as tensile strength, flexural strength, and impact strength.

[0011] Preferably, the low-viscosity nylon resin is an aliphatic nylon with an intrinsic viscosity of 2.0-2.7 dL / g.

[0012] Glass fiber reinforced nylon materials prepared from aliphatic nylon with an intrinsic viscosity of 1.2-2.4 dL / g exhibit superior mechanical properties such as tensile strength, flexural strength, and impact strength.

[0013] Preferably, the copper salt composite heat stabilizer is a hindered phenol / phosphite / copper salt composite stabilizing system, wherein the mass ratio of hindered phenol, phosphite, and copper salt in the hindered phenol / phosphite / copper salt composite stabilizing system is 1-3:2-4:4-6.

[0014] The hindered phenols include antioxidant 1010, antioxidant 1076, antioxidant 264 or antioxidant 1098;

[0015] The phosphite includes antioxidant 168, antioxidant 626, or antioxidant 618;

[0016] The copper salt includes inorganic copper-based heat stabilizers;

[0017] The mass ratio of the copper salt composite heat stabilizer to the low viscosity nylon resin is 0.1-0.5:15-26.

[0018] The hindered phenol / phosphite / copper salt composite heat stabilizer is selected. The hindered phenol captures free radicals, the phosphite decomposes hydrogen peroxide, and the copper salt can efficiently catalyze the decomposition of hydrogen peroxide and passivate metal ions. The three work synergistically to cut off the thermal oxidation chain reaction from different pathways, providing comprehensive and long-lasting thermal protection for the matrix resin and the sensitive fiber-resin interface, thereby improving the mechanical properties and heat distortion temperature of the prepared glass fiber reinforced nylon material after thermal aging.

[0019] Preferably, the mass ratio of the low-viscosity nylon resin, semi-aromatic resin, and copper salt composite heat stabilizer is 15-26:20-35:0.1-0.5.

[0020] When the mass ratio of low-viscosity nylon resin, semi-aromatic resin, and copper salt composite heat stabilizer is selected within a suitable range, the prepared glass fiber reinforced nylon material exhibits superior mechanical properties such as tensile strength, flexural strength, and impact strength.

[0021] Preferably, the mixture further includes a lubricant and a coupling agent, wherein the mass ratio of the lubricant / coupling agent to the low-viscosity nylon resin is 0.3-0.7:0.05-0.15:15-26;

[0022] The lubricant is selected from one or more of TAF, calcium stearate, zinc stearate, and EBS;

[0023] The coupling agent is selected from one or more of γ-aminopropyltriethoxysilane (KH-550), γ-(2,3-epoxypropoxy)propyltrimethoxysilane (KH-560), γ-propyl methacrylate methoxysilane (KH-570), vinyltriethoxysilane (KH-151), vinyltrimethoxysilane (KH-171), γ-aminopropyltrimethoxysilane (KH-551), N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane (KH-602), and anilinemethyltriethoxysilane (KH-42).

[0024] Preferably, the long glass fiber is an alkali-free long glass fiber, and the diameter of the single filament of the alkali-free long glass fiber is 15-17 μm;

[0025] Glass fiber reinforced nylon materials prepared by selecting alkali-free long glass fibers exhibit superior mechanical properties such as tensile strength, flexural strength, and impact strength.

[0026] The mass ratio of the long glass fiber to the low-viscosity nylon resin is 30-60:15-26.

[0027] Preferably, the mixture further includes a compatibilizer and a nucleating agent, wherein the mass ratio of the compatibilizer, nucleating agent and low-viscosity nylon resin is 1-2:0.2-1.0:15-26.

[0028] Through the synergistic effect of compatibilizers and nucleating agents, the shrinkage difference between the flow direction and the vertical direction of the prepared glass fiber reinforced nylon material is significantly reduced, resulting in good dimensional stability and small warpage deformation of the product.

[0029] Preferably, the compatibilizer is selected from maleic anhydride-grafted polyolefin elastomers or ethylene-butyl acrylate copolymers;

[0030] The nucleating agent is selected from one or more of nylon nucleating agents, polyester nucleating agents, and ultrafine talc powder;

[0031] The particle size D50 of the ultrafine talc powder is 0.5-0.7 micrometers.

[0032] Secondly, the present invention provides a glass fiber reinforced nylon material prepared by the preparation method of the glass fiber reinforced nylon material described in the first aspect, comprising the following components:

[0033] 15-26 parts of low-viscosity nylon resin

[0034] 30-60 parts long glass fiber,

[0035] 1-2 parts compatibilizer

[0036] Nucleating agent 0.2-1.0 parts,

[0037] Lubricant 0.3-0.7 parts,

[0038] Heat stabilizer 0.1-0.5 parts,

[0039] 0.05-0.15 parts of coupling agent;

[0040] The notched impact strength of the glass fiber reinforced nylon material is 35-40 kJ / m².

[0041] Thirdly, the present invention provides an application of the glass fiber reinforced nylon material described in the second aspect in the preparation of engine peripheral components, the engine peripheral components including an intake manifold, an engine cover, a radiator tank, fan blades or a fan shroud.

[0042] (III) Beneficial Effects

[0043] This invention provides a glass fiber reinforced nylon material, its preparation method, and its applications. Compared with existing technologies, it has the following advantages:

[0044] This invention discloses a method for preparing glass fiber reinforced nylon material, which improves the tensile strength, flexural strength, impact strength and other mechanical properties of glass fiber reinforced nylon material, as well as its mechanical properties at high temperatures, by selecting low viscosity nylon resin, adding copper salt composite heat stabilizer and adding semi-aromatic nylon. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] This application provides a glass fiber reinforced nylon material, its preparation method, and its application, which solves the problems of poor mechanical properties and large warping deformation of existing glass fiber reinforced nylon materials, and achieves the effect of excellent mechanical properties, good dimensional stability, and small warping deformation of glass fiber reinforced nylon materials.

[0047] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0048] 1. By selecting low-viscosity nylon resin, adding copper salt composite heat stabilizers, and adding semi-aromatic nylon, the tensile strength, flexural strength, impact strength, and other mechanical properties of glass fiber reinforced nylon materials, as well as their mechanical properties at high temperatures, can be improved.

[0049] 2. By adding compatibilizers and nucleating agents, the difference in shrinkage rate between the flow direction and the vertical direction of glass fiber reinforced nylon materials is significantly reduced under the synergistic effect of the compatibilizers and nucleating agents, thereby resulting in good dimensional stability and small warpage deformation of the product.

[0050] To better understand the above technical solution, the following will provide a detailed explanation of the above technical solution in conjunction with specific implementation methods.

[0051] I. Preparation Method

[0052] The manufacturers from which the raw materials used in the examples were purchased are as follows:

[0053] Alkali-free long glass fiber: China Jushi Co., Ltd.;

[0054] Nylon 66 resin: Shenma Group;

[0055] Semi-aromatic resin PA6T: Qicai Chemicals;

[0056] Compatibilizer A560: Dow Chemical;

[0057] Nylon nucleating agent: Clariant CAV102.

[0058] Example 1

[0059] This embodiment provides a method for preparing glass fiber reinforced nylon material, including the following steps:

[0060] S1. Preparation of liquid resin

[0061] Preheat the twin-screw extruder to 300°C, preheat the alkali-free long glass fiber to 180°C, and dry the nylon 66 resin and semi-aromatic resin PA6T at 110°C for 4 hours for later use.

[0062] By mass, 17 parts of nylon 66 resin with intrinsic viscosity of 2.4 dL / g, 30 parts of semi-aromatic resin PA6T, 1.5 parts of compatibilizer ethylene-butyl acrylate copolymer A560, 0.6 parts of nylon nucleating agent Clariant CAV102, 0.5 parts of lubricant calcium stearate, 0.1 parts of coupling agent γ-aminopropyltriethoxysilane, and 0.3 parts of copper salt composite heat stabilizer were added to a high-speed mixer. The mixer speed was set to 800 r / min and the time was 10 min. The uniformly mixed mixture was fed into the feed port of a twin-screw extruder. After being conveyed in the conveying section, melted in the compression section, and extruded in the extrusion section of the twin-screw extruder, liquid resin was obtained.

[0063] The twin-screw extruder operates at 400 rpm, with the following zone temperatures: Zone 1: 290℃, Zone 2: 280℃, Zone 3: 280℃, Zone 4: 280℃, Zone 5: 280℃, Zone 6: 280℃. The copper salt composite heat stabilizer is a hindered phenol / phosphite / copper salt composite stabilization system, with a mass ratio of hindered phenol, phosphite, and copper salt of 2:3:5. The hindered phenol is antioxidant 1098, the phosphite is antioxidant 618, and the copper salt is inorganic copper heat stabilizer H318.

[0064] S2, Liquid resin completely impregnates glass fiber.

[0065] Liquid resin is transported into the impregnation tank, while 50 portions of alkali-free long glass fibers are guided into the impregnation tank through the yarn guide roller and the mold cavity under the action of the traction equipment. Under the action of mechanical pressure of 20MPa and tension, the liquid resin is forced into the interior of the alkali-free long glass fibers and covers the outer surface of the alkali-free long glass fibers, forming a liquid resin-encapsulated long glass fiber bundle.

[0066] S3, Molding Stage

[0067] Long glass fiber bundles, encased in liquid resin, are moved at a constant speed from one end of an impregnation tank into a coagulation tank filled with cold water. The liquid resin solidifies upon contact with the cold water. After air drying, pelletizing, and baking, glass fiber reinforced nylon granules are obtained. The granules are 12mm in length, and the glass fiber content is controlled to 50% by controlling the fiber count and linear speed through an extrusion machine program.

[0068] Example 2

[0069] The difference between Example 2 and Example 1 is as follows:

[0070] 1. The dosage of each component in S1 varies. Please refer to Table 1 for the specific dosage of each component.

[0071] 2. The S2 and S3 processes are different, as detailed below:

[0072] S2, Liquid resin completely impregnates glass fiber.

[0073] Liquid resin is injected into a washboard-style impregnation die. Fifty parts of preheated alkali-free long glass fibers are slowly passed through the die at a speed of 8 m / min. Under mechanical pressure and tension, the liquid resin is forced into the interior of the alkali-free long glass fibers and wraps around them, forming a liquid resin-encapsulated long glass fiber bundle. Through a special impregnation die design, good fiber wetting and dispersion are ensured while minimizing shear damage to the fibers during processing, thus ensuring the effective length of the long fibers in the final product.

[0074] S3, Molding Stage

[0075] Long glass fiber bundles wrapped in liquid resin are introduced into a coagulation tank filled with cold water at a constant moving speed. The liquid resin solidifies upon contact with the cold water. After air drying, pelletizing, and baking, glass fiber reinforced nylon granules are obtained. The granules are 10 mm long and contain 50% glass fiber.

[0076] Everything else is the same as in Example 1.

[0077] Example 3

[0078] The difference between Example 3 and Example 1 is that the amount of each component in S1 is different. The specific amount of each component is detailed in Table 1. The rest is the same as in Example 1.

[0079] Comparative Example 1

[0080] The difference between this comparative example and Example 1 is that in step S1, 2.7 viscosity nylon 66 resin is used instead of 2.4 viscosity nylon 66 resin. The specific amount is detailed in Table 1. The other aspects are the same as in Example 1.

[0081] Comparative Example 2

[0082] The difference between this comparative example and Example 1 is that step S1 does not include copper salt composite heat stabilizer. The specific dosage is detailed in Table 1. The rest is the same as in Example 1.

[0083] Comparative Example 3

[0084] The difference between this comparative example and Example 1 is that transparent nylon is used instead of semi-aromatic nylon in step S1. The specific dosage is detailed in Table 1. The rest is the same as in Example 1.

[0085] Comparative Example 4

[0086] The difference between this comparative example and Example 1 is that step S1 does not include a compatibilizer. The specific amounts of other components are detailed in Table 1. Otherwise, it is the same as Example 1.

[0087] Comparative Example 5

[0088] The difference between this comparative example and Example 1 is that step S1 does not include a nucleating agent. The specific amounts of other components are detailed in Table 1. Otherwise, it is the same as Example 1.

[0089] Table 1. Amounts of each raw material used in the preparation of glass fiber reinforced nylon materials in Examples 1-3 and Comparative Examples 1-5

[0090] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 PA662.4 resin 17 15 25.7 0 17 17 17 17 PA662.7 resin 0 -- -- 17 -- -- -- -- Transparent nylon 0 -- -- -- -- 30 -- -- Semi-aromatic nylon 30 33.4 20 30 30 0 30 30 Long glass fiber 50 50 50 50 50 50 50 50 Compatibilizer 1.5 1.0 2.0 1.5 1.5 1.5 0 2.1 Nucleating agent 0.6 0.2 1.0 0.6 0.6 0.6 2.1 0 Lubricant 0.5 0.3 0.7 0.5 0.5 0.5 0.5 0.5 Complex heat stabilizer 0.3 0.1 0.5 0.3 0 0.3 0.3 0.3 Coupling agent 0.1 0.05 0.15 0.1 0.1 0.1 0.1 0.1

[0091] II. Testing Methods

[0092] The glass fiber reinforced nylon granules prepared in Examples 1-3 and Comparative Examples 1-5 were poured into the feed port of an injection molding machine and injection molded into corresponding specimens and templates according to the required process parameters. The relevant properties of the specimens and templates were then tested. The specific test items and test methods are as follows.

[0093] 1. Density: ISO 1183, Specimen size: 80mm*10mm*4mm;

[0094] 2. Ash content: ISO 3451, sample size: 80mm*10mm*4mm;

[0095] 3. Tensile properties: ISO 527, specimen size: 170mm*10mm*4mm, test conditions: 5mm / min;

[0096] 4. Bending performance: ISO 178, strip size: 80mm*10mm*4mm, test conditions: 2mm / min;

[0097] 5. Notched impact strength: ISO 179, spline size: 80mm*10mm*4mm, test condition: 4J.

[0098] 6. Flow / Vertical Shrinkage Difference: Precisely measure the dimensional change of the plastic part using calipers. Calculate the shrinkage rate by comparing the dimensions before and after the test.

[0099] 7. Tensile strength retention rate after heat aging: The prepared tensile specimens were placed in an oven at 150℃ and aged for 300 hours. Their tensile properties were then tested and compared with those before aging.

[0100] 8. Heat Deflection Temperature: Mount the tensile specimen onto the heat deflection temperature testing equipment, ensuring good contact between the specimen and the equipment to avoid problems such as poor heat conduction or specimen detachment; set parameters such as heating rate, test temperature range, and deformation amount according to the testing standard; start the testing equipment, begin heating, and observe the deformation of the specimen. When the specimen reaches the preset deformation amount, the equipment will automatically record the temperature value at this time.

[0101] III. Test Results

[0102] The performance test results of the glass fiber reinforced nylon materials prepared in Examples 1-3 and Comparative Examples 1-5 are shown in Table 2.

[0103] Table 2. Performance test results of glass fiber reinforced nylon materials in Examples 1-3 and Comparative Examples 1-5

[0104] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Density g / cm 3 ]] 1.586 1.547 1.496 1.589 1.571 1.575 1.574 1.500 Ash content 52 50 53 53.3 51.2 51.8 54 53 Tensile strength MPa 283 273 280 204 228 244 281 280 Elongation at break % 4.7 4.6 4.8 5.2 7.6 5.3 5.0 4.9 Flexural strength MPa 415 420 418 306 315 325 418 419 Flexural modulus 16638 16328 16645 11876 12986 13830 16600 16537 Notched Charpy Impact Strength KJ / m 2 ]] 37.7 38.5 38.1 28.9 32 31 37.0 36.7 Flow / vertical shrinkage difference (%) 0.20 0.19 0.21 0.24 0.29 0.27 0.62 0.59 Tensile strength retention rate after heat aging 87.1 88.5 89.4 81.4 71.1 80 86.0 87.5 Heat distortion temperature / 1.8 MPa 255℃ 265℃ 259℃ 239℃ 197℃ 238℃ 259℃ 247℃

[0105] As shown in Table 2, the glass fiber reinforced nylon material prepared in Example 1 of this invention exhibits significantly better mechanical properties, such as tensile strength, flexural strength, and impact strength, than the composite materials prepared in Comparative Examples 1, 2, and 3. This indicates that the selection of low-viscosity nylon resin, the addition of copper salt composite heat stabilizer, and the addition of aromatic nylon in the technical solution of this invention can improve the tensile strength, flexural strength, and impact strength of the composite material. The tensile strength retention rate and heat distortion temperature of the glass fiber reinforced nylon material prepared in Example 1 after aging are higher than those of the composite material prepared in Comparative Example 2. Therefore, the addition of copper salt composite heat stabilizer can improve the mechanical properties of the glass fiber reinforced nylon material after thermal aging, meeting the requirements of high-temperature applications.

[0106] As shown in Table 2, the difference in flow / vertical shrinkage of the glass fiber reinforced nylon material prepared in Example 1 of this invention is 0.20%, while the differences in flow / vertical shrinkage of the glass fiber reinforced nylon materials prepared in Comparative Examples 4 and 5 under the condition of lacking compatibilizer or nucleating agent are relatively large, at 0.62% and 0.59% respectively. It can be seen that the technical solution of this application has a synergistic effect of compatibilizer and nucleating agent in reducing the difference in flow and vertical shrinkage of glass fiber reinforced nylon material, thereby making the prepared glass fiber reinforced nylon material have lower warpage and better dimensional stability.

[0107] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0108] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0109] The present invention has been illustrated with the above embodiments to describe the detailed process flow of the present invention. However, the present invention is not limited to the above detailed process flow, that is, it does not mean that the present invention must rely on the above detailed process flow to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A method of making a glass fiber reinforced nylon material, characterized by, The method comprises the following steps: mixing low-viscosity nylon resin, semi-aromatic resin and copper salt composite heat stabilizer to obtain a mixture, melting the mixture to obtain a liquid resin, infiltrating the liquid resin into the interior and peripheral surface of long glass fiber and then solidifying to obtain a glass fiber reinforced nylon material.

2. The method of making a glass fiber reinforced nylon material of claim 1, wherein, The low-viscosity nylon resin is aliphatic nylon with intrinsic viscosity of 2.0-2.7 dL / g.

3. The method of making a glass fiber reinforced nylon material of claim 1, wherein, The copper salt composite heat stabilizer is a hindered phenol / phosphite / copper salt composite stabilizing system, and the mass ratio of the hindered phenol, phosphite and copper salt in the composite stabilizing system is 1-3:2-4:4-6. The hindered phenol includes antioxidant 1010, antioxidant 1076, antioxidant 264 or antioxidant 1098. The phosphite includes antioxidant 168, antioxidant 626 or antioxidant 618. The copper salt includes inorganic copper heat stabilizer. The mass ratio of the copper salt composite heat stabilizer to the low-viscosity nylon resin is 0.1-0.5:15-26.

4. The method of making a glass fiber reinforced nylon material of claim 1, wherein, The mass ratio of the low-viscosity nylon resin, semi-aromatic resin and copper salt composite heat stabilizer is 15-26:20-35:0.1-0.

5.

5. The method of making a glass fiber reinforced nylon material of claim 1, wherein, The mixture further comprises lubricant and coupling agent, and the mass ratio of the lubricant, coupling agent and low-viscosity nylon resin is 0.3-0.7:0.05-0.15:15-26.

6. The method of making a glass fiber reinforced nylon material of claim 1, wherein, The long glass fiber is alkali-free long glass fiber, and the single-fiber diameter of the alkali-free long glass fiber is 15-17 μm. The mass ratio of the long glass fiber to the low-viscosity nylon resin is 30-60:15-26.

7. The method of making a glass fiber reinforced nylon material of claim 1, wherein, The mixture further comprises compatibilizer and nucleating agent, and the mass ratio of the compatibilizer, nucleating agent and low-viscosity nylon resin is 1-2:0.2-1.0:15-26.

8. The method of making a glass fiber reinforced nylon material of claim 7, wherein, The compatibilizer is selected from maleic anhydride grafted polyolefin elastomer or ethylene-butyl acrylate copolymer. The nucleating agent is selected from one or more of nylon nucleating agent, polyester nucleating agent and ultra-fine talc powder. The particle size D50 of the ultra-fine talc powder is 0.5-0.7 microns.

9. A glass fiber reinforced nylon material prepared by the method of any one of claims 1-8, wherein, The method comprises the following components: Low-viscosity nylon resin 15-26 parts, Long glass fiber 30-60 parts, Compatibilizer 1-2 parts, Nucleating agent 0.2-1.0 parts, Lubricant 0.3-0.7 parts, Heat stabilizer 0.1-0.5 parts, Coupling agent 0.05-0.15 parts. The notched impact strength of the glass fiber reinforced nylon material is 35-40 kJ / m².

10. Use of the glass fiber reinforced nylon material according to claim 9 for the production of engine peripheral parts, characterized in that, The engine peripheral components include intake manifold, engine cover, radiator water tank, fan blade or fan cover.