Preparation method of halogen-free flame-retardant PA material

Abstract

The invention discloses a halogen-free flame-retardant PA (polyamide) material, which is prepared from the following components in parts by weight: 50 to 100 parts of nylon 6 resin, 50 to 80 parts of glass fiber and 20 to 65 parts of polyamide, 10-25 parts by weight of a flame retardant synergist and 2-5 parts by weight of a compatilizer; 10 to 30 parts by weight of glass fiber; 5 to 15 parts of graphene; 3-8 parts by weight of a toughening agent; 0.1-1 part by weight of a nucleating agent; 0.1-1 part by weight of a lubricant; and 0.1-1 part by weight of an antioxidant. According to the material prepared in the manner, the flame retardant property, the material strength, the breakdown resistance and the aging resistance of the PA material are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PA materials, and in particular to a halogen-free flame-retardant PA material. Background Art

[0002] PA (polyamide), also known as nylon, is a common polymer material. Common PA materials include PA6 and PA66. PA material has excellent mechanical properties, with high strength and hardness. Its tensile strength and elastic modulus are relatively high, it can withstand large tensile forces, and has excellent fatigue resistance. Therefore, PA materials are widely used in the manufacture of high-strength, fatigue-resistant parts, such as vehicle parts, sports equipment, tools, etc. PA66 has good heat resistance, crystallinity, strength and other properties, but the flame retardancy of PA66 is average. The existing method of adding flame retardants to PA66 to improve its flame retardancy, but some flame retardants have relatively weak aging resistance and are easily affected by ultraviolet rays, heat, oxygen and other factors, causing degradation and aging. It will also bring other negative effects such as aging resistance to PA materials, affecting the comprehensive performance of PA materials. Summary of the invention

[0003] The main purpose of the present invention is to provide a halogen-free flame-retardant PA material prepared by the above method, which effectively improves the flame retardancy, material strength, breakdown resistance and aging resistance of the PA material.

[0004] In order to solve the above technical problems, the present invention discloses a halogen-free flame-retardant PA material, which is composed of the following components in parts by weight: 50-100 parts by weight of nylon 6 resin, 50-80 parts by weight of glass fiber, and 20-65 parts by weight of polyamide; 10-25 parts by weight of flame retardant synergist, 2-5 parts by weight of compatibilizer; 10-30 parts by weight of glass fiber; 5-15 parts of graphene; 3-8 parts by weight of toughening agent; 0.1-1 parts by weight of nucleating agent; 0.1-1 parts by weight of lubricant; and 0.1-1 parts by weight of antioxidant.

[0005] According to one embodiment of the present invention, the above-mentioned composition is composed of the following components in the following weight parts: 50 weight parts of nylon 6 resin, 50 weight parts of glass fiber, polyamide: 20 weight parts; flame retardant synergist: 10 weight parts, compatibilizer: 2 weight parts; glass fiber: 10 weight parts; graphene 5 parts; toughening agent: 3 weight parts; nucleating agent: 0.1 weight part; lubricant: 0.1 weight part; antioxidant: 0.1 weight part.

[0006] According to one embodiment of the present invention, the above-mentioned composition is composed of the following components in the following weight parts: 100 weight parts of nylon 6 resin, 80 weight parts of glass fiber, polyamide: 65 weight parts; flame retardant synergist: 25 weight parts, compatibilizer: 5 weight parts; glass fiber: 30 weight parts; graphene 15 parts; toughening agent: 8 weight parts; nucleating agent: 1 weight part; lubricant: 1 weight part; antioxidant: 1 weight part.

[0007] According to one embodiment of the present invention, the above-mentioned composition is composed of the following components in the following weight parts: 80 weight parts of nylon 6 resin, 60 weight parts of glass fiber, polyamide: 40 weight parts; flame retardant synergist: 15 weight parts, compatibilizer: 4 weight parts; glass fiber: 20 weight parts; graphene 10 parts; toughening agent: 5 weight parts; nucleating agent: 0.5 weight parts; lubricant: 0.5 weight parts; antioxidant: 0.5 weight parts.

[0008] According to one embodiment of the present invention, the preparation method of the above-mentioned halogen-free flame-retardant PA material includes: 1) weighing raw materials according to weight ratio, nylon 6 resin, glass fiber, polyamide, flame retardant synergist, compatibilizer, glass fiber, graphene, toughening agent, nucleating agent, lubricant, antioxidant; 2) drying and stirring: drying the above-mentioned raw materials, putting them into a mixer, stirring them at a speed of 300-500r / min for 10-40min, and stirring them evenly; 3) granulation: inputting the mixed raw materials into a screw extruder, melt-extruding granulation, and drying to obtain the product.

[0009] Compared with the prior art, the present application can obtain the following technical effects: 1) The material prepared by the above method effectively improves the flame retardancy, material strength, breakdown resistance and aging resistance of PA materials.

[0010] Of course, any product implementing the present invention does not necessarily need to achieve all of the above technical effects at the same time. DETAILED DESCRIPTION

[0011] The following will explain the implementation methods of the present application in detail with reference to examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0012] A halogen-free flame-retardant PA material is composed of the following components in parts by weight: 50-100 parts by weight of nylon 6 resin, 50-80 parts by weight of glass fiber, and 20-65 parts by weight of polyamide; 10-25 parts by weight of flame retardant synergist, 2-5 parts by weight of compatibilizer, 10-30 parts by weight of glass fiber, 5-15 parts of graphene, 3-8 parts by weight of toughening agent, 0.1-1 part by weight of nucleating agent, 0.1-1 part by weight of lubricant, and 0.1-1 part by weight of antioxidant.

[0013] Conduct experiments based on the above data.

[0014] Test 1, 50 parts by weight of nylon 6 resin, 50 parts by weight of glass fiber, polyamide: 20 parts by weight; flame retardant synergist: 10 parts by weight, compatibilizer: 2 parts by weight; glass fiber: 10 parts by weight; graphene 5 parts; toughening agent: 3 parts by weight; nucleating agent: 0.1 parts by weight; lubricant: 0.1 parts by weight; antioxidant: 0.1 parts by weight.

[0015] Test 2, 100 parts by weight of nylon 6 resin, 80 parts by weight of glass fiber, 65 parts by weight of polyamide; 25 parts by weight of flame retardant synergist, 5 parts by weight of compatibilizer; 30 parts by weight of glass fiber; 15 parts of graphene; 8 parts by weight of toughening agent; 1 part by weight of nucleating agent; 1 part by weight of lubricant; and 1 part by weight of antioxidant.

[0016] Test 3, 80 parts by weight of nylon 6 resin, 60 parts by weight of glass fiber, 40 parts by weight of polyamide; 15 parts by weight of flame retardant synergist, 4 parts by weight of compatibilizer; 20 parts by weight of glass fiber; 10 parts of graphene; 5 parts by weight of toughening agent; 0.5 parts by weight of nucleating agent; 0.5 parts by weight of lubricant; and 0.5 parts by weight of antioxidant.

[0017] In summary, the material prepared in Test 2 has the highest improvement in flame retardancy, material strength, breakdown resistance and aging resistance, and has the best effect.

[0018] The preparation method of halogen-free flame-retardant PA material comprises: 1) weighing raw materials according to weight ratio, and adding nylon 6 resin, glass fiber, polyamide, flame retardant synergist, compatibilizer, glass fiber, graphene, toughening agent, nucleating agent, lubricant and antioxidant; 2) drying and stirring: drying the above raw materials, putting them into a mixer, stirring them at a speed of 300-500r / min for 10-40min, and stirring them evenly; 3) granulation: inputting the mixed raw materials into a screw extruder, and obtaining the product after melt extrusion granulation and drying.

[0019] According to the material prepared by the above method, the flame retardant performance, material strength, breakdown resistance and aging resistance of the PA material are effectively improved. The above description shows and describes several preferred embodiments of the present application, but as before, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the present application through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present application, and shall be within the scope of protection of the claims attached to the present application.

Claims

1. A halogen-free flame-retardant PA material, characterized in that: include: The following ingredients are in parts by weight: Composition: 50-100 parts by weight of nylon 6 resin, 50-80 parts by weight of glass fiber, and 20-65 parts by weight of polyamide; Flame retardant synergist: 10-25 parts by weight, compatibilizer: 2-5 parts by weight; glass fiber: 10-30 parts by weight; graphene 5-15 parts; Toughening agent: 3-8 parts by weight; Nucleating agent: 0.1-1 parts by weight; Lubricant: 0.1-1 parts by weight; Antioxidant: 0.1-1 parts by weight.

2. The halogen-free flame-retardant PA material according to claim 1, characterized in that: include: The composition is composed of the following components in parts by weight: 50 parts by weight of nylon 6 resin, 50 parts by weight of glass fiber, 20 parts by weight of polyamide; The flame retardant synergist: 10 parts by weight, the compatibilizer: 2 parts by weight; the glass fiber: 10 parts by weight; the graphene: 5 parts; the toughening agent: 3 parts by weight; the nucleating agent: 0.1 parts by weight; the lubricant: 0.1 parts by weight; and the antioxidant: 0.1 parts by weight.

3. The halogen-free flame-retardant PA material according to claim 1, characterized in that: include: The invention is composed of the following components in parts by weight: 100 parts by weight of the nylon 6 resin, 80 parts by weight of the glass fiber, 65 parts by weight of the polyamide; 25 parts by weight of the flame retardant synergist, 5 parts by weight of the compatibilizer; 30 parts by weight of the glass fiber; 15 parts of the graphene; 8 parts by weight of the toughening agent; 1 part by weight of the nucleating agent; 1 part by weight of the lubricant; and 1 part by weight of the antioxidant.

4. The halogen-free flame-retardant PA material according to claim 1, characterized in that: include: The composition is composed of the following components in parts by weight: 80 parts by weight of nylon 6 resin, 60 parts by weight of glass fiber, 40 parts by weight of polyamide; The flame retardant synergist: 15 parts by weight, the compatibilizer: 4 parts by weight; the glass fiber: 20 parts by weight; the graphene: 10 parts; the toughening agent: 5 parts by weight; the nucleating agent: 0.5 parts by weight; the lubricant: 0.5 parts by weight; and the antioxidant: 0.5 parts by weight.

5. The method for preparing the halogen-free flame-retardant PA material according to claim 1, characterized in that: include: 1) Weighing the raw materials according to the weight ratio, including the nylon 6 resin, the glass fiber, the polyamide, the flame retardant synergist, the compatibilizer, the glass fiber, the graphene, the toughening agent, the nucleating agent, the lubricant and the antioxidant; 2) Drying and stirring: drying the above raw materials, putting them into a mixer, stirring them at a speed of 300-500r / min for 10-40min, and stirring them evenly; 3) Granulation: inputting the mixed raw materials into a screw extruder, melt-extruding and granulating, and drying to obtain the product.