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Heat-resistant and anti-aging high polymer material and preparation method thereof

A polymer material and anti-aging technology, which is applied in the field of automotive polymer materials, can solve the problems of reducing the density of nylon materials, and achieve the effects of easy operation, simple process and high yield

Pending Publication Date: 2021-11-19
中科检测技术服务(重庆)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention patent with the application number "201610441678.2" "a flame-retardant and high-temperature-resistant modified nylon material for automotive plastics" uses inorganic filler A, inorganic filler B and polyurethane-graphene composite lightweight foam filler to effectively reduce the density of nylon materials , but also has excellent noise reduction and heat insulation effects, and can improve the physical properties of nylon materials such as wear resistance and tensile strength, but the nylon materials used for special parts are still insufficient for the above physical properties, such as the engine compartment. Nylon materials also need to have high temperature resistance, aging resistance, and high temperature stability. In addition, they need to maintain high fluidity, which is conducive to preparation in a wide processing range.

Method used

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  • Heat-resistant and anti-aging high polymer material and preparation method thereof
  • Heat-resistant and anti-aging high polymer material and preparation method thereof
  • Heat-resistant and anti-aging high polymer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw materials were weighed according to the following mass: 100g of polyamide resin, 4g of kaolin, 2g of carbon fiber, 0.5g of composite nucleating flow agent, 5g of peroxybenzoic acid, 3g of Fischer-Tropsch wax, and 0.2g of antioxidant. The composite nucleating flow agent prepared includes linolenic acid, sodium benzoate, sodium carboxymethylcellulose, and talcum powder, the mass ratio of which is 0.8:1:1:0.1. The mineral filler is powdered kaolin with particle size ≤ 5 microns, purity ≥ 95%, and carbon fiber length ≤ 0.5 cm.

[0027] First prepare the composite nucleating flow agent:

[0028] (1) Mix talcum powder and water according to the mass ratio of 1:50, stir well and make suspension system;

[0029] (2) Add sodium benzoate and sodium carboxymethylcellulose into the suspension system at a mass ratio of 1:1, stir until dissolved, then heat to 65°C, then add linoleic acid, and stir at 350rpm for 3.5h, Then ultrasonic dispersion with 25KHz ultrasonic wave was...

Embodiment 2

[0035] The raw materials were weighed according to the following mass: 150g of polyamide resin, 6g of kaolin, 4g of glass fiber, 1g of composite nucleating flow agent, 6g of peroxybenzoic acid, 4g of Fischer-Tropsch wax, and 0.1g of antioxidant. Wherein the composite nucleating flow agent prepared is prepared in Example 1. The mineral filler is powdered calcium carbonate with particle size ≤ 5 microns, purity ≥ 95%, and glass fiber length ≤ 0.5 cm.

[0036] Preparation of composite polymer materials:

[0037] (1) PA66 polyamide resin, calcium carbonate, composite nucleating flow agent, peroxybenzoic acid, Fischer-Tropsch wax, and antioxidant are added in a high-speed mixer and mixed uniformly to obtain a mixture;

[0038] (2) Place the obtained mixture in a twin-screw machine with a rotation speed of 250rpm. After heating the heating zone to 220-230°C, add glass fibers, heat again to 260-275°C, and then cool down to 220-250°C for extrusion particles to obtain polymer materia...

Embodiment 3

[0040] The raw materials were weighed according to the following mass: 200g polyamide resin, 10g part kaolin, 6g part glass fiber, 2g composite nucleating flow agent, 8g peroxybenzoic acid, 5g Fischer-Tropsch wax, 1g antioxidant. Wherein the composite nucleating flow agent prepared is prepared in Example 1. The mineral filler is powdered wollastonite with particle size ≤ 5 microns, purity ≥ 95%, and glass fiber length ≤ 0.5 cm.

[0041] Preparation of composite polymer materials:

[0042] (1) Add PA66 polyamide resin, wollastonite, composite nucleating flow agent, peroxybenzoic acid, Fischer-Tropsch wax, and antioxidant into a high-speed mixer and mix uniformly to obtain a mixture;

[0043] (2) Place the obtained mixture in a twin-screw machine with a rotation speed of 250rpm. After heating the heating zone to 220-230°C, add glass fibers, heat again to 260-275°C, and then cool down to 220-250°C for extrusion particles to obtain polymer materials.

[0044] The polymer materi...

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Abstract

The invention discloses a heat-resistant and anti-aging high polymer material and a preparation method thereof, and belongs to the field of automotive high polymer materials. The high polymer material comprises the following raw materials: polyamide resin, mineral filler, fiber, a composite nucleation flowable agent, peroxybenzoic acid, Fischer-Tropsch wax and an antioxidant, the composite nucleation flowable agent is composed of linoleic acid, sodium benzoate, sodium carboxymethyl cellulose and talcum powder, the prepared high polymer material polyamide has high flowability, products can be prepared in a wide processing range, and the prepared products have high temperature resistance and aging resistance.

Description

technical field [0001] The invention relates to the technical field of polymer materials for vehicles, in particular to a heat-resistant and anti-aging polymer material and a preparation method thereof. Background technique [0002] Polyamide is a general term for thermoplastic resins containing repeating amide groups—[NHCO]—in the main molecular chain, including aliphatic polyamides, aliphatic-aromatic polyamides and aromatic polyamides. Among them, aliphatic polyamide has many varieties, large output and wide application. With the development of automobiles, new challenges have been put forward for automotive materials. Due to its excellent performance, polyamide has become an alternative material for new automobiles. [0003] In order to reduce the weight of high-voltage components and the required installation space, flame-retardant plastics are indispensable materials. Therefore, special polyamide materials with aging resistance and high flame retardancy can significan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L1/28C08K3/34C08K5/098C08K5/09C08K7/06C08K7/14
CPCC08L77/02C08L77/06C08L2201/08C08L2205/24C08L1/286C08K3/34C08K5/098C08K5/09C08K7/06C08K3/346C08K7/14
Inventor 唐毅游世文侯千李易英杜杰
Owner 中科检测技术服务(重庆)有限公司
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