High-viscosity flame-retardant nylon material and preparation method thereof

Abstract

The invention discloses a high-viscosity flame-retardant nylon material which comprises the following components: 20-35 parts of polyamide; 25 to 32 parts of nylon 6 resin; 4-8 parts of calcined kaolin; 0.5 to 1.1 parts of a coupling agent; 10 to 20 parts of filler; 5-10 parts of a flame retardant; 0.7 to 1.5 parts of an antibacterial agent; 0.2 to 0.7 part of an antioxidant; 23 to 28 parts of chopped glass fiber; 6-11 parts of nano magnesium hydroxide and 3-5 parts of an inhibitor. According to the prepared material, the flame retardant property of the material is improved, meanwhile, the flowability and dimensional stability of the material are improved, and the mechanical property of the material is enhanced. On the other hand, the cost of the composite material can be reduced, and the composite material is very suitable for burning nylon materials and can be popularized and used on a large scale.

Description

Technical Field

[0001] The invention relates to the technical field of nylon materials, and in particular to a high-viscosity flame-retardant nylon material and a preparation method thereof. Background Art

[0002] Nylon has high mechanical strength, heat resistance, low friction coefficient, wear resistance, self-lubrication, oil resistance, and good electrical insulation. It is mainly used in the field of engineering plastics and synthetic fibers. Nylon 6 (PA6) is the most commonly used in the field of engineering plastics and has been widely used in the fields of electronics, electrical appliances, construction engineering, etc. However, PA6 itself is flammable, and in these fields it is required to have good flame retardant properties, so it is necessary to modify it to be flame retardant.

[0003] Since PA6 has shortcomings such as poor dimensional stability and processing performance, it is generally filled with inorganic fillers in practical applications to improve its dimensional stability and processing performance, and to reduce costs to a certain extent. The flame retardants commonly used in the prior art include halogen flame retardants, phosphorus flame retardants, phosphorus-nitrogen compound flame retardants and inorganic flame retardants, among which halogen flame retardants are restricted in use because they produce a large amount of smoke and corrosive gases during combustion; phosphorus flame retardants have the characteristics of low toxicity, low smoke, halogen-free and high flame retardancy, and their flame retardant mechanism is mainly to achieve heat insulation, oxygen isolation and improve flame retardant properties by forming a stable carbon layer. The above-mentioned flame retardants are often added to nylon materials in large proportions, which greatly reduces the mechanical properties of the materials. Therefore, it is necessary to prepare a highly efficient and synergistic halogen-free flame-retardant nylon material. Summary of the invention

[0004] The main purpose of the present invention is to provide a high-viscosity flame-retardant nylon material. The material prepared by the present invention not only improves the flame-retardant properties of the material, but also improves the fluidity and dimensional stability of the material, and enhances the mechanical properties of the material. On the other hand, it can reduce the cost of the composite material, is very suitable for flame-retardant nylon materials, and can be promoted and used on a large scale.

[0005] In order to solve the above technical problems, the present invention discloses a high-viscosity flame-retardant nylon material, comprising: 20-35 parts of polyamide; 25-32 parts of nylon 6 resin; 4-8 parts of calcined kaolin; 0.5-1.1 parts of coupling agent; 10-20 parts of filler; 5-10 parts of flame retardant; 0.7-1.5 parts of antibacterial agent; 0.2-0.7 parts of antioxidant; 23-28 parts of chopped glass fiber; 6-11 parts of nano magnesium hydroxide and 3-5 parts of inhibitor.

[0006] According to one embodiment of the present invention, the above-mentioned polyamide is 20 parts; nylon 6 resin is 25 parts; calcined kaolin is 4 parts; coupling agent is 0.5 parts; filler is 10 parts; flame retardant is 5 parts; antibacterial agent is 0.7 parts; antioxidant is 0.2 parts; short glass fiber is 23 parts; nano magnesium hydroxide is 6 parts, and inhibitor is 3 parts.

[0007] According to one embodiment of the present invention, the above-mentioned polyamide is 28 parts; nylon 6 resin is 28 parts; calcined kaolin is 6 parts; coupling agent is 0.8 parts; filler is 15 parts; flame retardant is 8 parts; antibacterial agent is 1 part; antioxidant is 0.5 parts; short glass fiber is 25 parts; nano magnesium hydroxide is 8 parts, and inhibitor is 4 parts.

[0008] According to one embodiment of the present invention, the above-mentioned polyamide is 35 parts; nylon 6 resin is 32 parts; calcined kaolin is 8 parts; coupling agent is 01.1 parts; filler is 20 parts; flame retardant is 10 parts; antibacterial agent is 1.5 parts; antioxidant is 0.7 parts; short glass fiber is 28 parts; nano magnesium hydroxide is 11 parts, and inhibitor is 5 parts.

[0009] According to one embodiment of the present invention, the method for preparing the above-mentioned high-viscosity flame-retardant nylon material comprises the following steps: (1) preparing raw materials: preparing polyamide; the nylon 6 resin; the calcined kaolin; the coupling agent; the filler; the flame retardant; the antibacterial agent; the antioxidant; the chopped glass fiber; the nano-magnesium hydroxide, and the inhibitor raw materials; and (2) reacting: placing the raw materials into a reaction kettle containing water, evacuating the air, introducing nitrogen, heating, and causing an in-situ polycondensation reaction to obtain the nylon material.

[0010] Compared with the prior art, the present application can obtain the following technical effects: 1) The material prepared by the present invention not only improves the flame retardant properties of the material, but also improves the fluidity and dimensional stability of the material and enhances the mechanical properties of the material. On the other hand, it can reduce the cost of the composite material, is very suitable for burning nylon materials, and can be promoted and used on a large scale.

[0011] 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

[0012] The following examples are used to explain the implementation methods of the present application in detail, 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.

[0013] A high-viscosity flame-retardant nylon material comprises: 20-35 parts of polyamide; 25-32 parts of nylon 6 resin; 4-8 parts of calcined kaolin; 0.5-1.1 parts of coupling agent; 10-20 parts of filler; 5-10 parts of flame retardant; 0.7-1.5 parts of antibacterial agent; 0.2-0.7 parts of antioxidant; 23-28 parts of chopped glass fiber; 6-11 parts of nano magnesium hydroxide and 3-5 parts of inhibitor.

[0014] Based on the above data, the following experiments were conducted: Test 1: 20 parts of polyamide; 25 parts of nylon 6 resin; 4 parts of calcined kaolin; 0.5 parts of coupling agent; 10 parts of filler; 5 parts of flame retardant; 0.7 parts of antibacterial agent; 0.2 parts of antioxidant; 23 parts of chopped glass fiber; 6 parts of nano magnesium hydroxide, and 3 parts of inhibitor.

[0015] Test 2: 28 parts of polyamide; 28 parts of nylon 6 resin; 6 parts of calcined kaolin; 0.8 parts of coupling agent; 15 parts of filler; 8 parts of flame retardant; 1 part of antibacterial agent; 0.5 parts of antioxidant; 25 parts of chopped glass fiber; 8 parts of nano magnesium hydroxide, and 4 parts of inhibitor.

[0016] Test 3: 35 parts of polyamide; 32 parts of nylon 6 resin; 8 parts of calcined kaolin; 01.1 parts of coupling agent; 20 parts of filler; 10 parts of flame retardant; 1.5 parts of antibacterial agent; 0.7 parts of antioxidant; 28 parts of chopped glass fiber; 11 parts of nano magnesium hydroxide, and 5 parts of inhibitor.

[0017] In summary, Experiment 2 has the best effect and better performance.

[0018] A method for preparing a high-viscosity flame-retardant nylon material comprises the following steps: (1) preparing raw materials: preparing polyamide; the nylon 6 resin; the calcined kaolin; the coupling agent; the filler; the flame retardant; the antibacterial agent; the antioxidant; the chopped glass fiber; the nano-magnesium hydroxide, and the inhibitor raw materials; and (2) reacting: placing the raw materials into a reaction kettle containing water, evacuating the air, introducing nitrogen, heating, and causing an in-situ polycondensation reaction to obtain the nylon material.

[0019] The material prepared by the present invention not only improves the flame retardant properties of the material, but also improves the fluidity and dimensional stability of the material and enhances the mechanical properties of the material. On the other hand, the cost of the composite material can be reduced, and it is very suitable for burning nylon materials and can be widely promoted and used.

[0020] 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 high viscosity flame retardant nylon material, characterized in that: include: Polyamide 20-35 parts; 25-32 parts of nylon 6 resin; 4-8 parts of calcined kaolin; 0.5-1.1 parts of coupling agent; 10-20 parts of filler; 5-10 parts of flame retardant; 0.7-1.5 parts of antibacterial agent; 0.2-0.7 parts of antioxidant; 23-28 parts of chopped glass fiber; 6-11 parts of nano magnesium hydroxide, and 3-5 parts of inhibitor.

2. The high viscosity flame retardant nylon material according to claim 1, characterized in that: include: 20 parts of the polyamide; 25 parts of the nylon 6 resin; 4 parts of the calcined kaolin; 0.5 parts of the coupling agent; 10 parts of the filler; 5 parts of the flame retardant; 0.7 parts of the antibacterial agent; 0.2 parts of the antioxidant; The chopped glass fibers are 23 parts; the nano magnesium hydroxide is 6 parts; and the inhibitor is 3 parts.

3. The high viscosity flame retardant nylon material according to claim 1, characterized in that: include: 28 parts of the polyamide; 28 parts of the nylon 6 resin; 6 parts of the calcined kaolin; 0.8 parts of the coupling agent; 15 parts of the filler; 8 parts of the flame retardant; 1 part of the antibacterial agent; 0.5 parts of the antioxidant; The chopped glass fibers are 25 parts; the nano magnesium hydroxide is 8 parts; and the inhibitor is 4 parts.

4. The high viscosity flame retardant nylon material according to claim 1, characterized in that: include: 35 parts of the polyamide; 32 parts of the nylon 6 resin; 8 parts of the calcined kaolin; 0.1 part of the coupling agent; 20 parts of the filler; 10 parts of the flame retardant; 1.5 parts of the antibacterial agent; The antioxidant is 0.7 parts; the chopped glass fibers are 28 parts; the nano magnesium hydroxide is 11 parts; and the inhibitor is 5 parts.

5. A method for preparing a high-viscosity flame-retardant nylon material according to claim 1, characterized in that: Step (1), equipment raw materials: prepare the polyamide; the nylon 6 resin; the calcined kaolin; the coupling agent; the filler; the flame retardant; the antibacterial agent; the antioxidant; the chopped glass fiber; the nano magnesium hydroxide, and the inhibitor raw materials; step (2) reaction: put the raw materials into a reaction kettle containing water, evacuate, introduce nitrogen, increase the temperature, and cause an in-situ polycondensation reaction to obtain the nylon material.