Halogen-free flame-retardant reinforced nylon material and preparation method and application thereof

Abstract

The application provides a halogen-free flame-retardant reinforced nylon material and a preparation method and application thereof. The halogen-free flame-retardant reinforced nylon material comprises the following components and weight parts: 95-100 parts of nylon resin, 14-18 parts of halogen-free flame retardant, 3-8 parts of synergist, 5-10 parts of anti-precipitation agent, 0.2-0.8 parts of nucleating agent, 5-8 parts of dispersing agent, 1-4 parts of lubricant, 0.4-0.8 parts of antioxidant, 3-8 parts of reinforcing agent and 5-10 parts of toughening agent. The preparation method of the halogen-free flame-retardant reinforced nylon material comprises preparing a halogen-free flame retardant, pretreating the nylon resin and preparing the halogen-free flame-retardant reinforced nylon material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high polymer materials, in particular to a halogen-free flame-retardant reinforced nylon material and a preparation method and application thereof. BACKGROUND

[0002] Polyamide (nylon) material as an engineering plastic has high mechanical properties, impact properties, and high heat resistance, and is a kind of material with excellent performance, which is widely used in the fields of electronic appliances, LED lighting, automobile industry, etc. However, nylon is easy to burn and cannot meet the high flame-retardant performance requirements in the fields of electronic appliances, new energy vehicles, aerospace, building, etc. With the progress of science and technology and the acceleration of industrialization process, the demand for high-performance nylon materials, especially those with high toughness and high-temperature resistance and good flame-retardant performance, is increasing. In particular, in high-end electronic equipment such as high-end servers, communication equipment, aerospace electronic equipment, etc., it is required that the materials do not easily deform during processing and installation. The outer parts of the automobile body wall, the hood, etc. need to have good toughness and ductility to adapt to the complex deformation of the automobile, and nylon materials with high flexibility and ductility are needed to ensure that these parts are not easily broken during collision, and at the same time, the flame-retardant grade also needs to meet the safety requirements of the automobile.

[0003] In order to improve the flame retardant performance of nylon, it is often necessary to add a flame retardant in the nylon resin to achieve fireproof function. In the prior art, halogen or halogen-free flame retardants are usually added to nylon to achieve flame retardation. Halogen-free flame retardants refer to a class of flame retardants that do not contain halogen components. This kind of flame retardant is added in the processing of nylon and other polymer materials, aiming to improve the flame retardant performance of the material, reduce the burning speed, and even achieve the effect of self-extinguishing. The working principle of halogen-free flame retardant is mainly to form a porous carbon layer to isolate the transfer of heat and oxygen, thereby slowing down the combustion process. In addition, halogen-free flame retardants can absorb a large amount of heat during endothermic decomposition and dehydration, inhibit the temperature rise of the burning part and its vicinity, and the water vapor decomposed in turn prevents the release of flammable gas, further enhancing the flame retardant effect. There are various types of halogen-free flame retardants for nylon materials, including but not limited to red phosphorus, melamine salt, metal oxide hydrate (such as aluminum hydroxide, magnesium hydroxide, etc.), phosphorus compounds (such as hypophosphite, etc.), silicon-based flame retardants and nitrogen-based flame retardants. These flame retardants each have their own characteristics, and can be selected according to the specific needs and processing conditions of the nylon material. Red phosphorus may cause the color of nylon products to darken, be prone to moisture absorption, have certain toxicity and dust explosion risk, and these flame retardants each have their own characteristics, and can be selected according to the specific needs and processing conditions of the nylon material. The modification means of melamine salt is limited, which easily affects the mechanical properties and toughness of nylon, the metal oxide hydrate (such as aluminum hydroxide, magnesium hydroxide, etc.) needs to be added in large amounts to achieve the flame retardant effect, which easily affects the mechanical properties and processing properties of nylon, the phosphorus compounds (such as hypophosphite, etc.) easily affect the elongation at break and melting point of nylon while improving the flame retardant performance; the nitrogen-based flame retardant has poor compatibility with nylon, is prone to moisture absorption, and affects the mechanical properties and electrical properties of the material. Therefore, it has practical significance to prepare a nylon material with high toughness and good flame retardant performance to meet the performance requirements of various application fields. SUMMARY

[0004] The present application provides a halogen-free flame-retardant reinforced nylon material and its preparation method and application to solve the problems raised in the background art.

[0005] To solve the above technical problems, the present application discloses a halogen-free flame-retardant reinforced nylon material, which comprises the following components: nylon resin, halogen-free flame retardant, synergist, anti-precipitation agent, nucleating agent, dispersant, lubricant, antioxidant, reinforcing agent and toughening agent.

[0006] Further, the following components are included by weight parts: 95-100 parts of nylon resin, 14-18 parts of halogen-free flame retardant, 3-8 parts of synergist, 5-10 parts of anti-precipitation agent, 0.2-0.8 parts of nucleating agent, 5-8 parts of dispersant, 1-4 parts of lubricant, 0.4-0.8 parts of antioxidant, 3-8 parts of reinforcing agent and 5-10 parts of toughening agent.

[0007] Further, the halogen-free flame retardant comprises the following components and weight parts: 3-8 parts of nano-montmorillonite, 25-30 parts of polyphenyl ether-isopentenyl alcohol polyoxyethylene ether, and 5-10 parts of polydimethylsiloxane.

[0008] Further, the synergist is a phosphorus-nitrogen modified silane, which is Xinyi synthetic XY-AP100, the anti-precipitation agent is PA612, the nucleating agent comprises calcium carbonate inorganic nucleating agent and sorbitol organic nucleating agent, the dispersing agent comprises hydroxyethyl ethylene bis-stearamide and nano-silicon dioxide, the lubricant is PE wax PE520, the antioxidant is antioxidant 1010, the reinforcing agent is dry para-aramid pulp, and the toughening agent is thermoplastic elastomer Kraton A1536HS.

[0009] Further, the weight ratio of the calcium carbonate inorganic nucleating agent and the sorbitol organic nucleating agent is 3:2, and the weight ratio of the hydroxyethyl ethylene bis-stearamide and the nano-silicon dioxide is 2:3.

[0010] The application discloses a preparation method of a halogen-free flame-retardant reinforced nylon material.

[0011] Further, the preparation of the halogen-free flame retardant is that the nano-montmorillonite, the polyphenyl ether-isopentenyl alcohol polyoxyethylene ether and the polydimethylsiloxane are stirred and mixed at room temperature and 400 rpm for 4 hours to obtain the halogen-free flame retardant.

[0012] Further, the pretreatment of the nylon resin is that 3-8 parts of gamma-aminopropyl triethoxysilane (KH-550), 0.6-1.2 parts of nano-graphene, 0.1-0.4 parts of sodium lignosulfonate and 0.1-0.3 parts of sodium dodecyl sulfate are weighed according to weight parts, added into ethanol, stirred at room temperature at a stirring speed of 500 rpm for 30 minutes, a weak alkali solution of sodium bicarbonate is added to adjust the pH value of the solution to 7.6, filtered through a filter membrane with a pore size of 0.45 mu m to obtain a treatment liquid, nylon PA66 resin particles are immersed in the treatment liquid, soaked at room temperature for 4 hours, and dried at 80 DEG C for 4 hours to obtain the treated nylon resin.

[0013] Further, the step of preparing the halogen-free flame-retardant reinforced nylon material is that: the nylon PA6 resin is added into a main material scale by weight parts, the halogen-free flame retardant, the synergistic agent phosphorus-nitrogen modified silane, PA612, calcium carbonate, sorbitol, hydroxyethyl ethylene bis-stearamide and nano-silicon dioxide are added into a mixer for mixing, and are put into a high-speed mixer for melt mixing, PE wax PE520 and antioxidant 1010 are added for uniform dispersion to prepare a main material, a side feeding metering scale is added, dry para-aramid pulp and thermoplastic elastomer Kraton A1536HS are added into a side feeding metering scale, a double-screw extruder is started, and the main material and the auxiliary material metering extruder are started in sequence, after discharging, the side feeding metering extruder is started, the temperature control area in the double-screw extruder is controlled to be 80-250 DEG C, the vacuum degree is 0.08 MPa, and the extrusion speed is 800 rpm, so that the heating melt blending extrusion is carried out, the strip is cooled by water, and the pelletizing machine is used to cut the particles at a speed of 1000 rpm to prepare the halogen-free flame-retardant reinforced nylon material.

[0014] The application discloses a kind of halogen-free flame-retardant reinforced nylon material, and the halogen-free flame-retardant reinforced nylon material is applied to electrical, electronic, electrical equipment components.

[0015] Compared with the prior art, the application provides a halogen-free flame-retardant reinforced nylon material, a preparation method and application thereof, which has the following beneficial effects:

[0016] 1. The nano-silicon dioxide has good hydrophobic effect and is suitable for high-temperature, strong alkali and strong acid systems, and has good dispersibility in high-polarity medium.

[0017] 2. The nucleating agent is composed of inorganic nucleating agent active calcium carbonate and organic nucleating agent sorbitol and its derivatives. The active calcium carbonate is more beneficial to improve the elongation at break of the nylon material due to its nano-sized particle size and strong interaction, and has a positive effect on the flame-retardant property due to its high surface activity and strong interaction with the nylon molecules.

[0018] 3. The polydimethylsiloxane has good compatibility with the nylon material, which is beneficial to improve the flame-retardant property, the processing property and the mechanical strength of the nylon, and may be beneficial to improve the elongation at break and maintain the toughness of the material. DETAILED DESCRIPTION

[0019] The preferred embodiments of the application are described below, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the application, and are not used to limit the application.

[0020] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application, which is merely to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0021] Unless otherwise specified, the examples and comparative examples are parallel tests with the same components, component contents, preparation steps and preparation parameters. The experimental methods in the following examples are conventional methods unless otherwise specified. The test materials used in the following examples are analytical reagents (A.R.) unless otherwise specified, which are purchased from commercial channels.

[0022] Nano montmorillonite was purchased from Zhejiang Fenghong New Material Co., Ltd.; polyphenyl ether-isopentenyl alcohol polyoxyethylene ether was purchased from Jiayou Chemical Co., Ltd., with a hydroxyl value of 21.40-25.40 mgKOH / g; polydimethylsiloxane was purchased from sigmaaldrich, with a Mw of 95,000; nano graphene was purchased from Jiangsu Xianfeng Nanometer Material Technology Co., Ltd., with a product number of XF0117782-42-5; sodium lignosulfonate was purchased from sigmaaldrich, with an average Mw of 52,000; PA6 resin was BASF B40L; thermoplastic elastomer was Kraton A1536HS; phosphorus-nitrogen modified silane was Xinyi Synthesis XY-AP100, purchased from Nanjing Xinyi Synthesis Technology Co., Ltd.; PE wax PE520 was purchased from Germany Clariant; sorbitol transparent nucleating agent was purchased from Zibo Kunyu Chemical Co., Ltd. NA-JS03; nano calcium carbonate was Huawana Nano Calcium CCS, purchased from Guangxi Huawana New Material Co., Ltd.; hydroxyethyl ethylene bis-stearamide (modified EBS, HEEBS) was purchased from Jiaxing Zhongcheng Environmental Protection Technology Co., Ltd.; active nano silicon oxide was purchased from Anhui Aiyaota Silicon Oil Co., Ltd. IOTA 90-01; dry para-aramid pulp was purchased from Zhongfang Special Fiber Co., Ltd., with an average length of 0.6-1.4 mm.

[0023] Example 1

[0024] 1. Preparation of halogen-free flame retardant: 4 parts of nanometer montmorillonite, 26 parts of polyphenyl ether-isopentenyl alcohol polyoxyethylene ether and 8 parts of polydimethylsiloxane are mixed by stirring at room temperature and 400 rpm for 4 hours to obtain a halogen-free flame retardant.

[0025] 2. Pretreatment of nylon resin: 4 parts of γ-aminopropyl triethoxysilane (KH-550), 1 part of nanometer graphene, 0.3 parts of sodium lignosulfonate and 0.2 parts of sodium dodecyl sulfate are weighed by parts, added to ethanol, stirred at room temperature at a stirring speed of 500 rpm for 30 minutes, a weak base solution of sodium bicarbonate is added to adjust the pH value of the solution to 7.6, filtered through a 0.45 μm filter to obtain a treatment solution, and the nylon PA66 resin particles are immersed in the treatment solution, soaked at room temperature for 4 hours, and dried at 80°C for 4 hours to obtain the treated nylon resin.

[0026] 3. Preparation of halogen-free flame-retardant reinforced nylon material: 98 parts of nylon PA6 resin are added to the main material scale, 16 parts of halogen-free flame retardant, 4 parts of synergist phosphorus-nitrogen modified silane, 8 parts of anti-precipitation agent PA612, 0.48 parts of calcium carbonate inorganic nucleating agent, 0.32 parts of sorbitol organic nucleating agent, 2.4 parts of hydroxyethyl ethylene bis-stearamide and 3.6 parts of nanometer silicon dioxide as dispersing agent are added to the mixer and mixed, and then put into the high-speed mixer for melt mixing. During the melt mixing process, 2 parts of lubricant PE wax PE520 and 0.6 parts of antioxidant 1010 are gradually added and uniformly dispersed to form the main material. 5 parts of reinforcing agent dry para-aramid pulp and 8 parts of toughening agent thermoplastic elastomer Kraton A1536HS are added to the side feeding metering scale. The double screw extruder is started, and the main material, auxiliary material metering extruder are started in turn. After discharging, the side feeding metering extruder is started. The temperature control area in the double screw extruder (including the feeding port, plasticizing zone, melting zone, homogenizing zone and die zone) is controlled at 80-250°C, the vacuum degree is 0.08 MPa, and the extrusion speed is 800 rpm. Heat and melt blend extrusion is carried out, the strip is cooled in water, and the pelletizer is cut at a speed of 1000 rpm to produce halogen-free flame-retardant reinforced nylon material.

[0027] Example 2

[0028] 1. Preparation of halogen-free flame retardant: 3 parts of nanometer montmorillonite, 25 parts of polyphenyl ether-isopentenyl alcohol polyoxyethylene ether and 5 parts of polydimethylsiloxane are mixed by stirring at room temperature and 400 rpm for 4 hours to obtain a halogen-free flame retardant.

[0029] 2、Pre-treatment of nylon resin: 3 parts of γ-aminopropyl triethoxysilane (KH-550), 0.6 parts of nano graphene, 0.1 parts of sodium lignosulfonate and 0.1 parts of sodium dodecyl sulfate were weighed according to the weight parts, added to ethanol, stirred at room temperature at a stirring speed of 500 rpm for 30 minutes, weak base solution sodium bicarbonate was added to adjust the solution pH value to 7.6, filtered through a filter membrane of 0.45 μm to obtain a treatment solution, nylon PA66 resin particles were immersed in the treatment solution, soaked at room temperature for 4 hours, and dried at 80°C for 4 hours to obtain treated nylon resin.

[0030] 3、Preparation of halogen-free flame-retardant reinforced nylon material: 95 parts of nylon PA6 resin were weighed according to the weight parts and added to the main material scale, 14 parts of halogen-free flame retardant, 3 parts of synergistic agent phosphorus-nitrogen modified silane, 5 parts of anti-precipitation agent PA612, 0.12 parts of calcium carbonate inorganic nucleating agent, 0.08 parts of sorbitol organic nucleating agent, 2 parts of hydroxyethyl ethylene bis-stearamide and 3 parts of nano silicon dioxide as dispersing agent were added to the mixer for mixing, and were put into the high-speed mixer for melt mixing. In the process of melt mixing, 1 part of lubricant PE wax PE520 and 0.4 parts of antioxidant 1010 were gradually added and uniformly dispersed to prepare the main material. 3 parts of reinforcing agent dry para-aramid pulp and 5 parts of toughening agent thermoplastic elastomer Kraton A1536HS were added to the side feeding metering scale. The double screw extruder was started, and the main material, auxiliary material metering extruder were started in turn. After discharging, the side feeding metering extruder was started. The temperature control area in the double screw extruder (including the feeding port, plasticizing zone, melting zone, homogenizing zone and die zone) was controlled at 80-250°C, the vacuum degree was 0.08 MPa, and the extrusion speed was 800 rpm. Heating, melt blending and extrusion were carried out. The strip was cooled in water, and was cut into particles in a pelletizer at a speed of 1000 rpm to prepare halogen-free flame-retardant reinforced nylon material.

[0031] Example 3

[0032] 1、Preparation of halogen-free flame retardant: 8 parts of nano montmorillonite, 30 parts of polyphenyl ether-isopentenyl alcohol polyoxyethylene ether and 10 parts of polydimethylsiloxane were mixed at room temperature and 400 rpm for 4 hours to obtain a halogen-free flame retardant.

[0033] 2、Pre-treatment of nylon resin: 8 parts of γ-aminopropyl triethoxysilane (KH-550), 1.2 parts of nano graphene, 0.4 parts of sodium lignosulfonate and 0.3 parts of sodium dodecyl sulfate were weighed according to the weight parts, added to ethanol, stirred at room temperature at a stirring speed of 500 rpm for 30 minutes, weak base solution sodium bicarbonate was added to adjust the solution pH value to 7.6, filtered through a filter membrane of 0.45 μm to obtain a treatment solution, nylon PA66 resin particles were immersed in the treatment solution, soaked at room temperature for 4 hours, and dried at 80°C for 4 hours to obtain treated nylon resin.

[0034] 3. Preparation of halogen-free flame-retardant reinforced nylon material: 100 parts of nylon PA6 resin is added to the main material scale, 18 parts of halogen-free flame retardant, 8 parts of synergistic agent phosphorus-nitrogen modified silane, 10 parts of anti-precipitation agent PA612, 0.48 parts of calcium carbonate inorganic nucleating agent, 0.32 parts of sorbitol organic nucleating agent, 3.2 parts of hydroxyethyl ethylene bis-stearamide and 4.8 parts of nano-silicon dioxide as dispersing agent are added to the mixer for mixing, and then put into the high-speed mixer for melt mixing. In the process of melt mixing, 4 parts of lubricant PE wax PE520 and 0.8 parts of antioxidant 1010 are gradually added and uniformly dispersed to form the main material. Then, 8 parts of reinforcing agent dry para-aramid pulp and 10 parts of toughening agent thermoplastic elastomer Kraton A1536HS are added to the side-feeding metering scale. The double-screw extruder is started, and then the main material and auxiliary material metering extruders are started in sequence. After the material is discharged, the side-feeding metering extruder is started. The temperature control area in the double-screw extruder (including the feeding port, plasticizing zone, melting zone, homogenizing zone and die zone) is controlled at 80-250°C, the vacuum degree is 0.08 MPa, and the extrusion speed is 800 rpm. The heated melt blending extrusion is carried out, the strip is cooled by water, and then cut into particles by the granulator at a speed of 1000 rpm to obtain the halogen-free flame-retardant reinforced nylon material.

[0035] Comparative Example 1

[0036] The difference from Example 1 is that the same weight of halogen-free flame retardant is missing, and the others are the same.

[0037] Comparative Example 2

[0038] The difference from Example 1 is that the same weight of inorganic nucleating agent calcium carbonate is missing, and the others are the same.

[0039] Comparative Example 3

[0040] The difference from Example 1 is that the same weight of organic nucleating agent sorbitol is missing, and the others are the same.

[0041] Comparative Example 4

[0042] The difference from Example 1 is that the same weight of hydroxyethyl ethylene bis-stearamide is missing, and the others are the same.

[0043] Comparative Example 5

[0044] The difference from Example 1 is that the same weight of lubricant PE wax PE520 is missing, and the others are the same.

[0045] Comparative Example 6

[0046] The difference from Example 1 is that the same weight of reinforcing agent dry para-aramid pulp is missing, and the others are the same.

[0047] Performance Test

[0048] The nylon materials prepared from the examples and comparative examples were tested, and the products were injection molded into type I sample bars (molding process: melt temperature 250-265°C, nozzle temperature 270°C, molding pressure 75 MPa), and the tensile test conditions were: tensile rate 10 mm / min, and the sample bar thickness was 0.8 mm when the vertical combustion performance test was conducted, and the flame retardant grade was divided into V-0, V-1, V-2 and no grade, and the results are shown in Table 1.

[0049] Table 1

[0050]

[0051] As can be seen from Table 1, the performance of Example 1 is the best, with a notched impact strength of 34 kJ / m 2 , and an elongation at break of 283%, which is good in flexibility and ductility, and the flame retardant grade is V-0.

[0052] Application Examples 1-4 of a halogen-free flame-retardant reinforced nylon material

[0053] Examples 1-4 of a halogen-free flame-retardant reinforced nylon material were respectively applied to electrical, electronic, and electrical equipment components. After testing, the electrical, electronic, and electrical equipment components all had excellent mechanical properties, flexibility and ductility, flame retardancy, and stability.

[0054] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. If these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A halogen-free, flame-retardant, reinforced nylon material, characterized in that, By weight parts including the following components: nylon resin 95-100 parts, halogen-free flame retardant 14-18 parts, synergist 3-8 parts, anti-precipitation agent 5-10 parts, nucleating agent 0.2-0.8 parts, dispersant 5-8 parts, lubricant 1-4 parts, antioxidant 0.4-0.8 parts, reinforcing agent 3-8 parts and toughening agent 5-10 parts; The nylon resin is a pretreated nylon resin; The pretreated nylon resin step is to take 3-8 parts of γ-aminopropyl triethoxysilane (KH-550), 0.6-1.2 parts of nano graphene, 0.1-0.4 parts of sodium lignosulfonate and 0.1-0.3 parts of sodium dodecyl sulfate by weight parts, add to ethanol, stir at room temperature at 500 rpm for 30 minutes, add weak base solution sodium bicarbonate to adjust the solution pH value to 7.6, filter through a 0.45 μm filter membrane to obtain a treatment solution, immerse nylon PA66 resin particles in the treatment solution, soak at room temperature for 4 hours, and dry at 80℃ for 4 hours to obtain the treated nylon resin; The halogen-free flame retardant includes the following components and weight parts: 3-8 parts of nano montmorillonite, 25-30 parts of polyphenyl ether-isopentenyl alcohol polyoxyethylene ether and 5-10 parts of polydimethylsiloxane; The nucleating agent includes calcium carbonate inorganic nucleating agent and sorbitol organic nucleating agent; The dispersant includes hydroxyethyl ethylene bis-stearamide; The lubricant is PE wax PE520; The reinforcing agent is dry para-aramid pulp.

2. The halogen-free, flame-retardant, reinforced nylon material of claim 1, wherein, The synergist is phosphorus-nitrogen modified silane XY-AP100, the anti-precipitation agent is PA612, and the toughening agent is thermoplastic elastomer Kraton A1536HS.

3. The halogen-free, flame-retardant, reinforced nylon material of claim 1, wherein, The weight ratio of calcium carbonate inorganic nucleating agent and sorbitol organic nucleating agent is 3:2, and the weight ratio of hydroxyethyl ethylene bis-stearamide and nano silicon dioxide is 2:

3.

4. A process for preparing a halogen-free flame-retardant reinforced nylon material as claimed in claim 1, characterized in that, The preparation method includes preparing halogen-free flame retardant, pretreating nylon resin and preparing halogen-free flame retardant reinforced nylon material.

5. The method of making a halogen-free, flame-retardant, reinforced nylon material of claim 4, wherein, The step of preparing halogen-free flame retardant is to mix nano montmorillonite, polyphenyl ether-isopentenyl alcohol polyoxyethylene ether and polydimethylsiloxane at room temperature and 400 rpm for 4 hours to obtain halogen-free flame retardant.

6. The method of making a halogen-free, flame-retardant, reinforced nylon material of claim 4, wherein, The preparation of the halogen-free flame-retardant reinforced nylon material is as follows: the nylon PA6 resin is added into a main material scale by weight parts, the halogen-free flame retardant, the synergistic agent phosphorus-nitrogen modified silane, PA612, calcium carbonate, sorbitol, hydroxyethyl ethylene bis-stearamide and nano-silicon dioxide are added into a mixer for mixing, and then are put into a high-speed mixer for melt mixing; the PE wax PE520 and the antioxidant 1010 are added for uniform dispersion to prepare the main material; the auxiliary material scale is added, the dry para-aramid pulp and the thermoplastic elastomer Kraton A1536HS are added into a side-feeding metering scale, the double-screw extruder is started, and then the main material and the auxiliary material metering extruder are started in sequence; after the material is discharged, the side-feeding metering extruder is started; the temperature control area in the double-screw extruder is controlled at a temperature of 80-250 DEG C and a vacuum degree of 0.08 MPa, and the extruded speed is 800 rpm; the heating melt blending extrusion is carried out; the strip is cooled by water, and then is cut into particles by a granulator at a speed of 1000 rpm to prepare the halogen-free flame-retardant reinforced nylon material.

7. Use of a halogen-free flame-retardant reinforced nylon material according to claim 1, characterized in that, The halogen-free flame-retardant reinforced nylon material of claim 1 is applied to electrical, electronic and electrical equipment components.

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