Wear-resistant nylon composite material and preparation method thereof

A technology of nylon composite materials and wear-resistant materials, which is applied in the field of wear-resistant nylon composite materials and its preparation, and can solve problems affecting the adhesion between wear-resistant modifiers and nylon substrates, high viscosity and density of composite materials, and mechanical properties of composite materials. Influence and other issues, to achieve the effect of reducing the friction coefficient, reducing material wear, and hindering direct contact

Inactive Publication Date: 2020-04-03
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used materials for nylon wear-resistant modification mainly include graphite, molybdenum disulfide, etc., but their addition amount is generally relatively large, which will bring some defects to nylon materials: first, it will lead to higher viscosity and density of composite materials; second, First, it will affect the adhesion between the wear-resistant modifier and the nylon matrix; third, it will also have a significant impact on the mechanical properties of the composite material, which is not conducive to its application

Method used

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  • Wear-resistant nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Put 25 parts of mica powder into a heating furnace at 500°C for heating and calcination for 10 minutes, then heat up to 800°C for 30 minutes; add 6 parts of coupling agent KH550 and stir, then add 4 parts of nano-silicon carbide and 1 part of polytetrafluoroethylene, continue to stir to obtain a wear-resistant material.

[0028] (2) Weigh 79 parts of dry PA-M1013B, 20 parts of wear-resistant material, 0.1 part of antioxidant 1098, 0.1 part of antioxidant 168, and 0.2 part of lubricant EBS according to the weight ratio, and add them to the extruder after mixing , extruded by an extruder, water-cooled and pelletized. Among them, the processing temperature of the extruder is 220°C, 280°C, 290°C, 310°C, 300°C, 305°C from the feeding port to the die port, the main engine speed is 180rpm, and the vacuum degree is -0.03MPa.

Embodiment 2

[0030] (1) Put 15 parts of mica powder into a heating furnace at 600°C for heating and calcination for 5 minutes, then heat up to 900°C for 15 minutes; add 3.6 parts of coupling agent KH550 and stir, then add 2 parts of nano-silicon carbide and 1 part of polytetrafluoroethylene, continue to stir to obtain a wear-resistant material.

[0031] (2) Weigh 89 parts of dry PA-M1013B, 10 parts of wear-resistant material, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 0.5 part of lubricant Rico wax E according to the weight ratio, mix and add In the extruder, extruded through the extruder, water-cooled and then pelletized. Among them, the processing temperature of the extruder is 220°C, 280°C, 290°C, 310°C, 300°C, and 305°C from the feeding port to the die port, the main engine speed is 200rpm, and the vacuum degree is -0.05MPa.

Embodiment 3

[0033] (1) Put 40 parts of mica powder into a heating furnace at 500-600 ° C for 5-10 minutes of heating and calcination treatment, then raise the temperature to 800-900 ° C for 15-30 minutes; add 8.8 parts of coupling agent KH550 and stir, Then add 3 parts of nano-silicon carbide and 1 part of polytetrafluoroethylene, and continue stirring to obtain a wear-resistant material.

[0034] (2) Weigh 84 parts of dry PA-Alphalon 27, 15 wear-resistant material, 0.1 part of antioxidant 1098, 0.2 part of antioxidant 168, 0.3 part of lubricant A-C540A according to the weight ratio, mix and add extrusion In the machine, it is extruded by the extruder, cooled by water and cut into pellets. Among them, the processing temperature of the extruder is 220°C, 280°C, 290°C, 310°C, 300°C, and 305°C from the feeding port to the die port, the main engine speed is 350rpm, and the vacuum degree is -0.05MPa.

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Abstract

The invention discloses a wear-resistant nylon composite material and a preparation method thereof. The wear-resistant nylon composite material is prepared from the following components in parts by weight: 79-89 parts of nylon, 10-20 parts of a wear-resistant material, 0.1-0.3 part of an antioxidant and 0.1-0.5 part of a lubricant, wherein the wear-resistant material is formed by mixing nanometersilicon carbide, polytetrafluoroethylene, a coupling agent and mica powder. By utilizing the high hardness of the nanometer silicon carbide and the self-lubricating property, the high-temperature resistance and the like of the polytetrafluoroethylene, the wear resistance of the composite material is improved, a wear-resistant nylon product with excellent comprehensive performance is finally obtained, and the service life of the material is prolonged.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a wear-resistant nylon composite material and a preparation method thereof. [0002] technical background [0003] With the advancement of lightweight and cost reduction, metals have been replaced by various composite materials. Compared with metal components, composite materials have poor wear resistance, resulting in a lower service life. At present, steering components in the fields of automobile engines, cylinder piston parts, textile machinery, mining machinery, etc. are all replaced by composite materials such as nylon and polyether ether paulownia. [0004] Nylon has good comprehensive properties, low density, easy molding, and large design freedom; it is heat-insulating and has obvious advantages in mold and assembly costs. In addition, nylon not only has high tensile strength and excellent impact performance, but also has high thermal defo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/06C08L27/18C08K9/06C08K3/34
CPCC08L77/00C08L77/06C08K2201/011C08K2201/014C08L27/18C08K9/06C08K3/34
Inventor 杨桂生王华方永炜梁娜宋伟华
Owner HEFEI GENIUS NEW MATERIALS
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