Nylon resin composite material as well as preparation method and application thereof

Abstract

The invention discloses a nylon resin composite material as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The nylon resin composite material comprises a core layer and a surface layer, the surface layers are arranged on the upper surface and the lower surface of the core layer; the core layer comprises a nylon 66 resin matrix; the surface layer includes a cross-linked polymer of silicone and silicone oil. The nylon resin composite material obtained by the invention has excellent high temperature resistance and engine oil resistance, can reduce the permeation of engine oil to the material in a high-temperature hot engine oil environment, reduces the absorption and swelling of the material to oil, and has excellent mechanical properties; and moreover, the problem that the mechanical property is reduced or fails in a high-temperature hot engine oil environment can be reduced, and the composite material is suitable for preparing automobile engine parts, especially parts such as intake manifolds, air pipes or air ducts which need to work for a long time in the high-temperature hot engine oil environment.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and in particular to a nylon resin composite material and a preparation method and application thereof. Background Art

[0002] With the development of technology, especially in the automotive field, the demand for materials that can maintain stable performance in high temperature environments is growing. For example, the intake manifold, air duct, air duct and other components of automobile engines need to work for a long time at high temperatures, which requires the materials to not only have good high strength and high toughness, but also have high temperature resistance and oil resistance. Modified plastics are gradually favored by the automotive field due to their certain high temperature resistance, low price, light weight and high strength. However, although modified plastics have certain high temperature resistance and oil resistance, most modified plastic materials cannot be resistant to high-temperature oil environments at the same time. For example, engineering plastics such as polycarbonate / ABS alloy, PET, PBT have low softening points, poor high temperature resistance and oil resistance, and their mechanical properties will be severely reduced in hot oil environments and they are easily soluble in hot oil.

[0003] As a thermoplastic crystalline polymer, nylon material has good resistance to most organic solvents and is expected to be used as a material that is resistant to high temperatures and engine oils. However, its softening point is also low, and there is still a problem of decreased mechanical properties in extreme hot engine oil environments, making accidents such as material performance failure prone to occur. Summary of the invention

[0004] The present invention aims to solve at least one of the above-mentioned technical problems existing in the prior art. To this end, the purpose of the present invention is to provide a nylon resin composite material, which forms a surface layer on the surface of a nylon 66 resin matrix by cross-linking silicone and silicone oil, thereby improving the high-temperature engine oil resistance of the nylon resin composite material.

[0005] A second aspect of the present invention is to provide a method for preparing a nylon resin composite material.

[0006] The third aspect of the present invention is to provide an application of a nylon resin composite material.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] The first aspect of the present invention provides a nylon resin composite material, comprising a core layer and a surface layer; the surface layer is arranged on the upper surface and the lower surface of the core layer; the core layer comprises a nylon 66 resin matrix; the surface layer comprises a cross-linked polymer of silicone and silicone oil.

[0009] As a crystalline general-purpose engineering plastic, nylon 66 resin has excellent chemical resistance due to the repeated amide groups in its molecular chain. It has good resistance to most chemical solvents and can be used for a long time at 150°C. Its short-term heat resistance temperature can reach 230°C. At the same time, its high crystallinity gives it a more ordered and dense molecular structure, which can better reduce the penetration of molecules such as oils and solvents. Compared with other nylon resin materials, it is more suitable as a matrix for nylon resin composite materials with high-temperature engine oil resistance. However, using only nylon 66 resin as a matrix can only provide basic mechanical properties and thermal stability, which is not enough to meet the requirements for high temperature resistance and engine oil resistance of composite materials in practical applications.

[0010] The present invention introduces silicone and silicone oil on the basis of nylon 66 resin as the base resin, and the two are cross-linked on the surface of the nylon 66 resin base to form a cross-linked layer, which is a film layer constructed based on siloxane, has stable chemical properties, is not easy to swell or dissolve in hot oil, can protect the nylon 66 resin base, improve the oil resistance, and reduce the penetration of hot oil into the nylon resin composite material. In addition, the cross-linking of silicone and silicone oil also helps to improve the toughness of the nylon resin composite material, can effectively prevent the material from being corroded in a high-temperature hot oil environment, and avoid the reduction of material performance or even failure.

[0011] In the nylon resin composite material of the present invention, both silicone and silicone oil are indispensable. Silicone is a siloxane-based polymer compound with weather resistance, temperature resistance, corrosion resistance and flexibility. Although it can improve the performance of nylon materials when used in modified nylon, it does not have the function of protecting nylon materials in a hot engine oil environment. The present invention cross-links silicone and silicone oil to form a surface layer, which can effectively improve the high temperature resistance and engine oil resistance and reduce the problem of hot engine oil penetrating the material.

[0012] It should be understood that the nylon 66 resin matrix does not only include nylon 66 resin, but also includes oil resistant agents, additives and other ingredients.

[0013] In some embodiments of the present invention, the nylon resin composite material includes nylon 66 resin, an oil resistant agent and an auxiliary agent.

[0014] In some embodiments of the present invention, the nylon resin composite material comprises the following components by weight: 80 to 90 parts of nylon 66 resin, 0.2 to 2 parts of oil resistant agent, and 8 to 16 parts of auxiliary agent;

[0015] The oil-resistant agent includes silicone additive and silicone oil;

[0016] The cross-linked polymer of silicone in the silicone oil and the silicone auxiliary agent is precipitated on the surface of the nylon resin composite material to form the surface layer.

[0017] Silicone additives are used to provide silicone, silicone oil and silicone additives as oil resistant agents. The two can form silicone oil / silicone crosslinked products. During the processing and molding of nylon composite materials, the crosslinked products are mobile and partially precipitate, forming a layer of silicone oil and silicone crosslinked transfer film on the surface of the material. It is mainly a crosslinking of silicone oil and siloxane units, which can effectively reduce the demolding force of nylon resin composites and improve the oil resistance and mechanical properties of nylon resin composites.

[0018] It can be understood that after the cross-linked polymer of silicone oil and silicone precipitates to form a surface layer on the surface of the nylon resin composite material, the interior is the nylon 66 resin matrix, and the cross-linked polymer of silicone oil and silicone does not completely migrate to the surface, that is, the nylon 66 resin matrix includes nylon 66 resin, oil resistant agent and additives.

[0019] In some embodiments of the present invention, the nylon resin composite material comprises the following components in parts by mass:

[0020] 80-90 parts of nylon 66 resin, 0.6-1.5 parts of oil resistant agent, 8-15 parts of auxiliary agent.

[0021] In some specific embodiments of the present invention, the nylon resin composite material comprises the following components in parts by mass:

[0022] 85-90 parts of nylon 66 resin, 0.6-1.5 parts of oil resistant agent, and 8-15 parts of auxiliary agent.

[0023] In some embodiments of the present invention, the silicone additive includes at least one of silicone powder and silicone masterbatch.

[0024] In some embodiments of the present invention, the silicone oil includes at least one of hydrogen-containing silicone oil and vinyl silicone oil.

[0025] In some embodiments of the present invention, the silicone oil includes hydrogen-containing silicone oil and vinyl silicone oil; the mass ratio of the hydrogen-containing silicone oil to the vinyl silicone oil is 1:(0.05-0.5).

[0026] In some embodiments of the present invention, the mass ratio of the hydrogen-containing silicone oil to the vinyl silicone oil is 1:(0.05-0.4).

[0027] In some specific embodiments of the present invention, the mass ratio of the hydrogen-containing silicone oil to the vinyl silicone oil is 1:(0.05-0.25).

[0028] Specifically, the mass ratio of the hydrogen-containing silicone oil to the vinyl silicone oil may be 1:0.5, 1:0.1, 1:0.25 or 1:0.4.

[0029] The Si-H bond of hydrogen silicone oil and the CH=CH2 bond of vinyl silicone oil can undergo a silylation reaction. Due to their similarity and solubility, the two silicone oils will undergo a cross-linking reaction with silicone based on silicone additives. Silicone itself is a large molecular weight siloxane polymer, which will form a larger molecular weight siloxane polymer when cross-linked with silicone oil. This large molecular cross-linked product is thermosetting and has no melting point, which is beneficial to improving oil and heat resistance. At the same time, the control of the mass ratio is more conducive to the cross-linking of silicone and silicone oil.

[0030] In some embodiments of the present invention, the mass ratio of the silicone oil to the silicone additive is 1:(1-6).

[0031] In some embodiments of the present invention, the mass ratio of the silicone oil to the silicone additive is 1:(1.5-5.5).

[0032] In some specific embodiments of the present invention, the mass ratio of the silicone oil to the silicone additive is 1:(1.5-2.5).

[0033] Specifically, the mass ratio of the silicone oil to the silicone additive may be 1:1, 1:1.7, 1:2, 1:2.5, 1:3, 1:4, 1:5.5 or 1:6.

[0034] In some embodiments of the present invention, the oil resistant agent comprises 0.5 to 1.5 parts of silicone additive and 0.2 to 0.5 parts of silicone oil by weight.

[0035] In some embodiments of the present invention, the mass fraction of the silicone additive is 0.5 to 1.2 parts.

[0036] In some embodiments of the present invention, the mass fraction of the silicone oil is 0.2-0.3 parts.

[0037] In some embodiments of the present invention, the nylon resin composite material further comprises a catalyst at a concentration of 8 to 60 ppm.

[0038] In some embodiments of the present invention, the nylon resin composite material further comprises a catalyst with a concentration of 10 to 50 ppm.

[0039] The role of the catalyst is to promote the chemical cross-linking of silicone oil with silicone additives during the material processing and molding process, thereby enhancing the cross-linking density of the silicone oil / silicone film layer.

[0040] In some embodiments of the present invention, the auxiliary agent includes at least one of a toughening agent, a filler, an antioxidant, and a release agent.

[0041] In some embodiments of the present invention, the auxiliary agent includes a toughening agent, a filler, an antioxidant and a release agent at the same time, and includes 8 to 13 parts of the toughening agent, 0 to 1.5 parts of the filler, 0 to 1 part of the antioxidant and 0 to 0.5 parts of the release agent by weight.

[0042] In some embodiments of the present invention, the nylon resin composite material comprises the following components by weight:

[0043] 80-90 parts of nylon 66 resin, 0.2-2 parts of oil resistant agent, including 8-13 parts of toughening agent, 0-1.5 parts of filler, 0-1 part of antioxidant and 0-0.5 part of release agent.

[0044] In some embodiments of the present invention, the amount of the filler, antioxidant and release agent is not zero.

[0045] In some embodiments of the present invention, the auxiliary agent includes 8 to 12 parts of toughening agent, 0.3 to 1 part of filler, 0.4 to 0.8 part of antioxidant and 0.1 to 0.4 part of release agent in parts by mass.

[0046] In some embodiments of the present invention, the catalyst comprises a platinum-based catalyst.

[0047] In some embodiments of the present invention, the catalyst comprises a chloroplatinic acid solution; and the solvent of the chloroplatinic acid solution comprises at least one of ethanol, propanol, and butanol.

[0048] In some specific embodiments of the present invention, the concentration of the chloroplatinic acid solution is 10 to 100 ppm.

[0049] In some embodiments of the present invention, the toughening agent comprises an olefin copolymer.

[0050] In some embodiments of the present invention, the toughening agent includes at least one of ethylene-butene copolymer, ethylene-octene copolymer, and propylene-based elastomer.

[0051] In some embodiments of the present invention, the filler includes at least one of carbon black and titanium dioxide.

[0052] In some embodiments of the present invention, the antioxidant includes at least one of a hindered phenol antioxidant, a phosphate antioxidant, and an aromatic secondary amine antioxidant.

[0053] In some embodiments of the present invention, the antioxidant includes at least two of a hindered phenol antioxidant, a phosphate antioxidant, and an aromatic secondary amine antioxidant.

[0054] In some specific embodiments of the present invention, the hindered phenol antioxidant includes a mixture of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and tris[2.4-di-tert-butylphenyl]phosphite; the phosphate antioxidant includes at least one of 3,9-bis(2,4-dicumylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane (9228) and tris[2.4-di-tert-butylphenyl]phosphite (168); and the aromatic secondary amine antioxidant includes 4,4'-bis(phenylisopropyl)diphenylamine.

[0055] In some embodiments of the present invention, the release agent includes at least one of zinc stearate, calcium stearate, pentaerythritol stearate, and ethylene bisstearamide.

[0056] The second aspect of the present invention provides a nylon resin composite material according to the first aspect of the present invention, comprising the following steps:

[0057] The components are mixed, melted and extruded to obtain the nylon resin composite material.

[0058] In some embodiments of the present invention, the nylon 66 resin is dried before mixing.

[0059] In some embodiments of the present invention, the drying temperature of the nylon 66 resin is 70-90°C.

[0060] In some embodiments of the present invention, the extrusion is performed using a twin-screw extruder.

[0061] In some embodiments of the present invention, the extrusion temperature is 240-280°C.

[0062] In some embodiments of the present invention, the screw speed of the extruder during the extrusion process is 260-310 r / min.

[0063] The third aspect of the present invention provides a use of the nylon resin composite material described in the first aspect of the present invention in the preparation of automobile engine parts.

[0064] The nylon resin composite material obtained by the present invention has excellent high temperature resistance and engine oil resistance, can reduce the penetration of engine oil into the material under a high temperature hot engine oil environment, reduce the absorption and swelling of the material to the oil, has excellent mechanical properties, and can avoid the problem of mechanical property failure under a high temperature hot engine oil environment. The nylon resin composite material is suitable for preparing automobile engine parts, especially intake manifolds, air ducts or air ducts and other parts that need to work for a long time under a high temperature hot engine oil environment.

[0065] In some embodiments of the present invention, the component includes an intake manifold, an air duct or an air duct.

[0066] Compared with the prior art, the present invention has the following beneficial effects:

[0067] (1) The nylon resin composite material provided by the present invention uses nylon 66 resin as the base resin. Nylon 66 resin has a high heat deformation temperature, and as a highly crystalline resin, its molecular structure is orderly and tight, which is conducive to reducing the penetration of oil, solvent, etc. into the material, and providing basic temperature resistance and mechanical properties. A film layer of silicone oil and silicone cross-linked is formed on the surface of the nylon 66 resin matrix. The film layer can not only reduce the demoulding force of the material, but also more effectively avoid the penetration of high-temperature hot engine oil, protect the nylon resin composite material, reduce the interaction between oil molecules and material molecules, and reduce the absorption and swelling of the material to oil, thereby improving the high temperature resistance and engine oil resistance of the nylon resin composite material, reducing the risk of failure of the mechanical properties of the material, and overcoming the problem that conventional modified plastics are difficult to use in high-temperature hot engine oil environments.

[0068] (2) The preparation process of the nylon resin composite material of the present invention is simple and does not require complicated processes or expensive equipment. The cross-linking and precipitation of silicone oil and silicone can be achieved by mixing and processing the raw materials, and a siloxane-structured film layer is formed on the surface of the nylon 66 resin matrix, that is, a surface layer formed by cross-linking of silicone and silicone oil. The preparation method is simple and suitable for industrial applications.

[0069] (3) The nylon resin composite material obtained by the present invention has excellent high temperature resistance and engine oil resistance, which can reduce the problem of mechanical property degradation or failure in a high temperature hot engine oil environment. It is suitable for preparing automobile engine parts, especially intake manifolds, air ducts or air ducts, etc., which need to work for a long time in a high temperature hot engine oil environment. DETAILED DESCRIPTION

[0070] The present invention is further described in detail below by specific examples. Unless otherwise specified, the raw materials, reagents or devices used in the examples and comparative examples can be obtained from conventional commercial sources or can be obtained by prior art methods. Unless otherwise specified, the experiments or test methods are conventional methods in the art.

[0071] Some of the raw materials of the following embodiments and comparative examples of the present invention are described as follows:

[0072] PA66 (nylon 66 resin): EPR24, Shenma, China;

[0073] Toughening agent: 9371, Exxon;

[0074] Titanium Dioxide: Coster;

[0075] Carbon black: N220, Cabot, USA;

[0076] Hydrogenated silicone oil: MHX-1107, Dow Corning, hydrogen content 1.40-1.75%;

[0077] Vinyl silicone oil: DOWSIL 24-218, Dow Chemical, vinyl content 0.4-0.6%;

[0078] Antioxidants: Irganox 1010, Irganox 168, BASF; the mass ratio of Irganox 1010 to Irganox 168 is 1:1;

[0079] Catalyst: chloroplatinic acid standard reagent, the catalyst solvent carrier is ethanol, propanol and butanol, the concentration is 3000ppm, conventionally available on the market; when used, dimethyl silicone oil is diluted to 10-100ppm with Aladdin standard reagent;

[0080] Release agent: zinc stearate, commonly available in the market;

[0081] Silicone masterbatch: silicone powder mass content is about 50%, the carrier is PE (polyethylene), commercially available.

[0082] Unless otherwise specified, the raw materials used in the following examples and comparative examples of the present invention are the same.

[0083] The following is a detailed description with reference to specific embodiments and comparative examples.

[0084] Example 1

[0085] A nylon resin composite material consists of a core layer and a surface layer, wherein the surface layer is arranged on the upper surface and the lower surface of the core layer, the core layer comprises a nylon 66 resin matrix, and the surface layer comprises a cross-linked polymer of silicone and silicone oil; the components of the nylon resin composite material are shown in Table 1.

[0086] The preparation method of the nylon resin composite material of this embodiment comprises the following steps:

[0087] S1. Dry PA66 at 80°C for 4h;

[0088] S2. Weigh the raw materials according to the formulation in Table 1 and mix them in a high-speed mixer for 4 to 6 minutes;

[0089] S3. The material mixed in step S2 is added into a twin-screw extruder for extrusion granulation, and pelletized after water cooling to obtain a nylon resin composite material; wherein the aspect ratio of the twin-screw extruder is 48:1; the set temperatures of each temperature zone of the twin-screw extruder are respectively: 180℃, 260℃, 260℃, 250℃, 240℃, 240℃, 240℃, 240℃, 250℃, 255℃, 260℃; the main engine speed of the twin-screw extruder is 330rpm.

[0090] Embodiments 2 to 7

[0091] A nylon resin composite material, the differences from Example 1 are shown in Table 1, and the rest are the same as Example 1; the preparation method of the nylon resin composite material is the same as Example 1.

[0092] Table 1 Nylon resin composite material formulations of Examples 1 to 7 (parts by mass)

[0093]

[0094]

[0095] Note: In Table 1, except for the catalysts expressed by their concentration in the nylon resin composite material system, the rest are expressed by mass.

[0096] Comparative Examples 1 to 3

[0097] A nylon resin composite material, the formula of which is shown in Table 2; the preparation method is the same as that of Example 1.

[0098] Table 2 Nylon resin composite material formula table of comparative examples 1 to 3

[0099] Comparative Example 1 Comparative Example 2 Comparative Example 3 PA66 87.6 88.1 88.4 Toughening agent 10 10 10 Titanium Dioxide 1 1 1 Carbon Black 0 0 0 Silicone powder 0.8 0 0 Silicone Masterbatch 0 0 0 Hydrogen silicone oil 0 0.2 0 Vinyl silicone oil 0 0.02 0 Release agent 0.3 0.3 0.3 Antioxidants 0.6 0.6 0.6 catalyst 10ppm 10ppm 0

[0100] Note: In Table 2, except for the catalyst which is expressed by its concentration in the system, the rest are expressed by mass.

[0101] Results

[0102] After drying the nylon composite materials obtained in the above examples and comparative examples at 100°C for 4 hours, they were injection molded into standard test specimens by an injection molding machine, and performance tests were performed before and after the oil immersion experiment. The process conditions for injection molding are: nozzle temperature 230°C, temperatures of each zone 265°C, 265°C, 265°C, respectively, holding time 5s, and injection pressure 50MPa. The test method is as follows:

[0103] Tensile strength: tested according to ASTM D638 standard;

[0104] Bending strength: tested according to ASTM D790 standard;

[0105] Notched impact strength: tested according to ASTM D256 standard;

[0106] Oil immersion experiment: The test specimens were immersed in 200°C engine oil for 30 min; the engine oil was a fully synthetic engine oil for gasoline engines with a viscosity of 40 mPa·s.

[0107] The test results are shown in Tables 3 and 4.

[0108] Table 3 Nylon resin composite material properties of the examples

[0109]

[0110] Table 4 Comparative Example Nylon Resin Composite Material Properties

[0111] Comparative Example 1 Comparative Example 2 Comparative Example 3 Tensile strength before oil immersion / MPa 57.9 63.7 63.1 Tensile strength after oil immersion / MPa 47.2 45.3 45.7 Bending strength before oil immersion / MPa 88.6 96.6 99.7 Bending strength after oil immersion / MPa 75.8 71.3 68.6 Notched impact strength before oil immersion / J / m 892 924 943 Notched impact strength after oil immersion / J / m 801 753 701

[0112] Combining the test results of Table 3 and Table 4, it can be seen that the notched impact strength of the nylon resin composite materials prepared in Examples 1 to 7 of the present invention before and after oil immersion is not less than 850 J / m, and has the characteristics of high toughness, and the tensile strength is not less than 50 MPa, and the flexural strength is not less than 80 MPa, and has excellent mechanical properties before and after oil immersion. At the same time, compared with the tensile strength and notched impact strength of Examples 1 to 7 after immersion in 200°C engine oil for 30 minutes, the change in tensile strength is within 7%, the lowest is 0.16%, the change in notched impact strength is within 2%, and although the change in flexural strength is more obvious, it does not exceed 15%. In Comparative Examples 1 to 3, silicone additives or silicone oil are not added, or silicone additives and silicone oil are not added at the same time, and the high temperature resistance and engine oil resistance of the obtained nylon resin composite materials are significantly reduced. After immersion in 200°C engine oil for 30 minutes, the tensile strength of Comparative Examples 1 to 3 changes by at least 18%, the flexural strength changes by at least 14%, and the notched impact strength changes by at least 10%. It can be seen that the present invention forms a surface layer by cross-linking silicone and silicone oil, which significantly improves the material's resistance to high-temperature engine oil.

[0113] In summary, the nylon resin composite material obtained by the present invention has excellent high temperature resistance and engine oil resistance, can reduce the penetration of engine oil into the material in a high temperature hot engine oil environment, reduce the absorption and swelling of the material to oil, has excellent mechanical properties, and can reduce the problem of reduced mechanical properties or failure in a high temperature hot engine oil environment, and is suitable for preparing automobile engine parts, especially intake manifolds, air ducts or air ducts and other parts that need to work for a long time in a high temperature hot engine oil environment.

[0114] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A nylon resin composite material, characterized in that: It comprises a core layer and a surface layer; the surface layer is arranged on the upper surface and the lower surface of the core layer; the core layer comprises a nylon 66 resin matrix; and the surface layer comprises a cross-linked polymer of silicone and silicone oil.

2. The nylon resin composite material according to claim 1, characterized in that: The nylon resin composite material comprises the following components by weight: 80-90 parts of nylon 66 resin, 0.2-2 parts of oil resistant agent, and 8-16 parts of auxiliary agent; The oil-resistant agent includes silicone additive and silicone oil; The cross-linked polymer of silicone in the silicone oil and the silicone auxiliary agent is precipitated on the surface of the nylon resin composite material to form the surface layer.

3. The nylon resin composite material according to claim 2, characterized in that: The silicone additive includes at least one of silicone powder and silicone masterbatch: And / or, the silicone oil includes at least one of hydrogen-containing silicone oil and vinyl silicone oil.

4. The nylon resin composite material according to claim 3, characterized in that: The silicone oil includes hydrogen-containing silicone oil and vinyl silicone oil; the mass ratio of the hydrogen-containing silicone oil to the vinyl silicone oil is 1:(0.05-0.5).

5. The nylon resin composite material according to claim 2, characterized in that: The mass ratio of the silicone oil to the silicone additive is 1:(1-6).

6. The nylon resin composite material according to claim 2, characterized in that: The nylon resin composite material also includes a catalyst with a concentration of 8 to 60 ppm.

7. The nylon resin composite material according to claim 6, characterized in that: The auxiliary agent includes at least one of a toughening agent, a filler, an antioxidant, and a release agent; And / or, the auxiliary agent includes a toughening agent, a filler, an antioxidant and a release agent at the same time, and includes 8 to 13 parts of the toughening agent, 0 to 1.5 parts of the filler, 0 to 1 part of the antioxidant and 0 to 0.5 part of the release agent in terms of mass fractions.

8. The nylon resin composite material according to claim 7, characterized in that: The catalyst comprises a platinum-based catalyst; and / or, the toughening agent comprises an olefin copolymer; And / or, the filler includes at least one of carbon black and titanium dioxide; And / or, the antioxidant includes at least one of a hindered phenol antioxidant, a phosphate antioxidant, and an aromatic secondary amine antioxidant; And / or, the release agent includes at least one of zinc stearate, calcium stearate, pentaerythritol stearate, and ethylene bisstearamide.

9. A nylon resin composite material according to any one of claims 1 to 8, characterized in that: The steps include: The components are mixed, melted and extruded to obtain the nylon resin composite material.

10. Use of the nylon resin composite material according to any one of claims 1 to 8 in the preparation of automobile engine parts.

Images