High-strength anti-ultraviolet nylon material and preparation method thereof

Abstract

The invention discloses a high-strength anti-ultraviolet nylon material. The material is prepared from the following raw materials in parts by weight: 50 to 100 parts of nylon, 6 to 9 parts of nano montmorillonite, 2 to 3 parts of sodium benzoate, 4 to 5 parts of polylactic acid, 2 to 3 parts of dimethyltin dimercaptoacetate, 1 to 2.5 parts of a nano anti-ultraviolet agent, 3 to 5 parts of an antioxidant, 12 to 15 parts of barium sulfate, 10 to 12 parts of polyethylene, 2 to 3 parts of vinyltriethoxysilane, 12 to 15 parts of an auxiliary agent and 28 to 32 parts of arsenic-free glass fiber. The prepared material is firm, wear-resistant, resistant to high temperature and low temperature, resistant to heat aging, resistant to ultraviolet radiation aging, flame-retardant, stable in chemical property, safe and reliable, and can be widely used for manufacturing various plastic parts for automobiles.

Description

Technical Field

[0001] The invention relates to the technical field of nylon materials, and in particular to a high-strength ultraviolet-resistant nylon material. Background Art

[0002] With the development of plastic material technology and the continuous improvement of manufacturing processes, more and more automotive exterior parts are made of plastic materials instead of metal. Typical applications of plastic exterior parts in passenger cars include bumpers, radiator grilles, fenders, headlight housings, rearview mirror housings, sunroof systems, door handles, body trim panels, engine hoods, trunk lids, back doors and hardtops. The plastic materials used include polypropylene, polyethylene, polyurethane, nylon, ABS, polycarbonate and fiber-reinforced composites. The application of plastic exterior parts in commercial vehicles is mainly based on fiber-reinforced thermosetting composites, and the application parts include bumpers, masks, pedals, high roofs, deflectors and deflectors. The proportion of plastic parts used in passenger cars to the total weight of the vehicle body has reached an average of 8% to 12%, but the proportion used in exterior parts is only 1% to 2% of the total weight of the vehicle body.

[0003] The application of nylon in exterior parts mainly takes advantage of its advantages in molding and processing, which makes it easy to achieve complex shapes, with high production efficiency and quality consistency. At the same time, through synthesis and modification, it can achieve relatively high performance in some aspects, such as UV resistance, high toughness and scratch resistance. The development of UV-resistant nylon makes it possible for automobiles to be more miniaturized, lightweight and powerful. UV resistance can bring higher strength to certain parts, or simply replace metal raw materials to produce these parts. These will increase the demand for nylon materials, thereby driving market demand. Existing nylon plastics are mainly ordinary nylon plastics, and their UV resistance and mechanical properties cannot meet the requirements of special situations, resulting in unstable product quality, which affects the performance of nylon plastic products. Summary of the invention

[0004] The main purpose of the present invention is to provide a material prepared by the present invention which is strong and wear-resistant, resistant to high and low temperatures, resistant to heat aging, resistant to ultraviolet radiation aging, flame retardant, chemically stable, safe and reliable, and can be widely used in the manufacture of various types of automotive plastic parts.

[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 comprises: 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.

[0007] According to one embodiment of the present invention, the above-mentioned comprises: 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.

[0008] According to one embodiment of the present invention, the above-mentioned comprises: 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.

[0009] According to one embodiment of the present invention, the method for preparing the above-mentioned high-viscosity flame-retardant nylon material is characterized in that step (1) mixing raw materials: preparing polyamide; nylon 6 resin; calcined kaolin; coupling agent; filler; flame retardant; antibacterial agent; antioxidant; chopped glass fiber; nano magnesium hydroxide, and inhibitor are mixed according to the above weight; step (2) adding the mixed material to the main feed port of a twin-screw extruder, and obtaining the flame-retardant nylon material through melting, extrusion, granulation, and drying.

[0010] Compared with the prior art, the present application can obtain the following technical effects: 1) The material prepared by the present invention is strong and wear-resistant, resistant to high and low temperatures, resistant to heat aging, resistant to ultraviolet radiation aging, flame retardant, chemically stable, safe and reliable, and can be widely used in the production of various types of automotive plastic parts.

[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 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.

[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] Several experiments were performed based on the above data.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] In summary, Experiment 2 had the best effect.

[0019] A method for preparing a high-viscosity flame-retardant nylon material, characterized in that the steps of (1) mixing raw materials: preparing polyamide; nylon 6 resin; calcined kaolin; coupling agent; filler; flame retardant; antibacterial agent; antioxidant; chopped glass fiber; nano magnesium hydroxide, and inhibitor are mixed according to the above weights; and (2) adding the mixed material to the main feed port of a twin-screw extruder, and performing melting, extrusion, granulation, and drying to obtain the flame-retardant nylon material.

[0020] The material prepared by the invention is strong and wear-resistant, high and low temperature resistant, heat resistant and aging resistant, ultraviolet radiation resistant and aging resistant, flame retardant, chemically stable, safe and reliable, and can be widely used in manufacturing various types of automobile plastic parts.

[0021] 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-strength UV-resistant nylon material, characterized in that: The material is made of the following raw materials in parts by weight: 50-100 parts of nylon, 6-9 parts of nano-montmorillonite, 2-3 parts of sodium benzoate, 4-5 parts of polylactic acid, 2-3 parts of isooctyl tin dimethyldithioacetate, 1-2.5 parts of nano-anti-ultraviolet agent, 3-5 parts of antioxidant, 12-15 parts of barium sulfate, 10-12 parts of polyethylene, 2-3 parts of vinyl triethoxysilane, 12-15 parts of auxiliary agent and 28-32 parts of arsenic-free glass fiber.

2. The high-strength UV-resistant nylon material according to claim 1, characterized in that: The material is made of the following raw materials in parts by weight: 50 parts of nylon, 6 parts of nano-montmorillonite, 2 parts of sodium benzoate, 4 parts of polylactic acid, 2 parts of isooctyl tin dimethyldithioacetate, 1 part of nano-anti-ultraviolet agent, 3 parts of antioxidant, 12 parts of barium sulfate, 10 parts of polyethylene, 2 parts of vinyl triethoxysilane, 12 parts of additives, and 28 parts of arsenic-free glass fiber.

3. The high-strength UV-resistant nylon material according to claim 1, characterized in that: The material is made of the following raw materials in parts by weight: 80 parts of nylon, 8 parts of nano-montmorillonite, 2.5 parts of sodium benzoate, 4.5 parts of polylactic acid, 2.5 parts of isooctyl tin dimethyldithioacetate, 2 parts of nano-anti-ultraviolet agent, 4 parts of antioxidant, 14 parts of barium sulfate, 11 parts of polyethylene, 2.5 parts of vinyl triethoxysilane, 13.5 parts of additives, and 30 parts of arsenic-free glass fiber.

4. The high-strength UV-resistant nylon material according to claim 1, characterized in that: The material is made of the following raw materials in parts by weight: 100 parts of nylon, 9 parts of nano-montmorillonite, 3 parts of sodium benzoate, 5 parts of polylactic acid, 3 parts of isooctyl tin dimethyldithioacetate, 2.5 parts of nano-anti-ultraviolet agent, 5 parts of antioxidant, 15 parts of barium sulfate, 12 parts of polyethylene, 3 parts of vinyl triethoxysilane, 15 parts of additives, and 32 parts of arsenic-free glass fiber.

5. The method for preparing a high-strength UV-resistant nylon material according to claim 1, comprising the steps of (1) mixing raw materials: nylon, nano-montmorillonite, sodium benzoate, polylactic acid, isooctyl tin dimethyldithioacetate, nano-UV-resistant agent, antioxidant, barium sulfate, polyethylene, vinyl triethoxysilane, additives, and arsenic-free glass fiber; (2) making granules: mixing the raw materials weighed by weight, heating and melting to make granules, and then drying; and (3) molding: heating and melting the dried granules, and extruding them into molding.