Nylon 66 composite material for connecting rod sleeve and preparation method thereof

A composite material and connecting rod sleeve technology, applied in the preparation of the nylon 66 composite material, in the field of nylon 66 composite material, can solve the problems of insufficient material performance and product quality, achieve significant economic benefits, low cost, and avoid surface burrs. Effect

Active Publication Date: 2021-06-29
烟台恒大聚合体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to make up for the defects of existing sleeve materials, people try to use polymer materials to prepare connecting rod sleeves, but there are still deficiencies in material performance and product quality.

Method used

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  • Nylon 66 composite material for connecting rod sleeve and preparation method thereof
  • Nylon 66 composite material for connecting rod sleeve and preparation method thereof
  • Nylon 66 composite material for connecting rod sleeve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment relates to a nylon 66 composite material used for a connecting rod sleeve and a preparation method thereof.

Embodiment 11

[0034] A nylon 66 composite material for connecting rod sleeves, comprising the following raw material components in parts by mass:

[0035]

[0036] The interfacial compatibilizer is prepared by melting and grafting 0.5 g of isocene peroxide, 1.0 g of acrylic acid monomer and 98.5 g of polyethylene, and the MI value of polyethylene is 35 g / 10 min.

[0037] The preparation of the nylon 66 composite material for the connecting rod sleeve is carried out in the following steps:

[0038] a. Obtain interfacial compatibilizer: after carrying out dry material mixing (mixing speed is 300r / min, mixing time is 3min) of isocene peroxide, polyethylene and acrylic acid monomer, join twin-screw extruder, in reaction After reacting for 2.5 minutes at a temperature of 180-230°C and a screw speed of 500 rpm, the interfacial compatibilizer was obtained by melt extrusion;

[0039] b. Dry mix the PA66 base material, chain extender, carbon black, polytetrafluoroethylene, antioxidant and lubric...

Embodiment 12

[0044]A nylon 66 composite material for connecting rod sleeves, comprising the following raw material components in parts by mass:

[0045]

[0046] The interfacial compatibilizer is prepared by melting and grafting 0.5g of isocene peroxide, 2.0g of acrylic acid derivative and 97.5g of polypropylene, and the MI value of polypropylene is 45g / 10min.

[0047] The preparation of the nylon 66 composite material for the connecting rod sleeve is carried out in the following steps:

[0048] a. Obtain interfacial compatibilizer: After mixing isocene peroxide, polypropylene and acrylic acid derivatives with dry materials (mixing speed is 800r / min, mixing time is 4min), add them to twin-screw extruder, After reacting for 2 minutes at a temperature of 180-230°C and a screw speed of 700rpm, the interfacial compatibilizer was obtained by melt extrusion;

[0049] b. Dry mix PA66 base material, chain extender, carbon black, molybdenum disulfide, antioxidant and lubricant in the raw materi...

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PUM

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Abstract

The invention discloses a nylon 66 composite material used for a connecting rod sleeve, which is made of raw material components such as PA66 basic material, carbon fiber, interface compatibilizer, dispersant, chain extender, carbon black, wear-resistant agent and additives. The obtained nylon 66 composite material has a light specific gravity and strong designability. It is not only easy to form, but also has a uniform material after forming. It has various properties such as lubricity, wear resistance, impact resistance, high temperature resistance, corrosion resistance, and aging resistance. have been significantly improved. In addition, the preparation method of the nylon 66 composite material provided by the present invention clarifies the mixing sequence of raw materials, especially after dry mixing carbon fiber with a specific interfacial compatibilizer and a matching dispersant, and then melt-extruding it through a single-screw extruder The material is fed through the side feeding port, which solves the processing damage such as surface burrs and easy tearing and delamination caused by the addition of carbon fiber, gives full play to the performance advantages of carbon fiber, breaks the limitation of preparation, and ensures the high performance of nylon 66 composite materials. Strength and high performance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a nylon 66 composite material used for a connecting rod sleeve and a preparation method of the nylon 66 composite material. Background technique [0002] With the continuous development of polymer technology, polymer materials have increasingly shown extremely significant performance advantages in terms of wear resistance, impact resistance, and plasticity, and have gradually exerted effects that metal materials cannot achieve in different fields. The connecting rod sleeve is a common part of the operation of mechanical equipment. The main material of the common connecting rod sleeve is metal material, such as high-strength brass, high-quality carbon steel, etc. However, with the continuous development of automobile, aviation, aerospace and other industries Due to poor wear resistance, the connecting rod sleeve made of metal material must cooperate with the lubrication ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L51/06C08K13/04C08K7/06B29B9/06B29B9/14
CPCB29B9/06B29B9/14C08L77/06C08L2201/08C08L2205/03C08L51/06C08K13/04C08K7/06
Inventor 黄玉强王秋菊
Owner 烟台恒大聚合体有限公司
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