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 material properties, insufficient product quality, etc., and achieve strong plasticity, easy processing and molding, and excellent quality and performance. Effect

Active Publication Date: 2019-08-02
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 0.5g of isocene peroxide, 1.0g of acrylic acid monomer and 98.5g of polyethylene, and the MI value of polyethylene is 35g / 10min.

[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 lubricant i...

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 for a connecting rod sleeve. The nylon 66 composite material is prepared from raw material components such as a PA66 base material, carbon fiber,an interfacial compatibilizer, a dispersant, a chain extender, carbon black, an anti-wear agent and an additive; the obtained nylon 66 composite material is light in specific weight, has very strong designability, not only is easy to mould, but also is uniform in material after moulding, and has various significantly improved properties in lubricity, wear resistance, impact resistance, high temperature resistance, corrosion resistance, ageing resistance and the like. In addition, by a preparation method of the nylon 66 composite material, provided by the invention, the raw material mixing sequence is clarified, and especially after the carbon fiber is mixed with the specific interfacial compatibilizer and the matching dispersant in a dry state, melt extrusion is performed through a single-screw extruder and then feeding is performed through a side feed port, so that processing damage such as surface burring and easy tearing and layering due to addition of the carbon fiber is solved, performance advantages of the carbon fiber are fully played, the preparation limitation is broken through, and thus the high strength and the high performance of the nylon 66 composite material are guaranteed.

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 Applications(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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