High-strength and wear-resistant polyamide composite material and preparing method thereof

A technology of composite materials and polyamides, which is applied in the field of polymer materials, can solve the problems of large amount of addition, decline in mechanical properties, and low installation accuracy, and achieve the effects of high wear-resistant processing accuracy, high processing performance, and short molding cycle

Inactive Publication Date: 2016-08-24
NANJING DELLON ENG PLASTICS
View PDF4 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of modern material science, more and more metal materials are replaced by engineering plastics; engineering plastics are often used to make structural functional parts such as gears, bearings, and bushings. Factors such as temperature, humidity, and rotational speed will affect the material. Therefore, wear-resistant engineering plastics are required to have a low friction coefficient and friction loss, and they should also have high rigidity, high toughness, and high heat resistance; at present, general wear-resistant engineering plastics have the following properties: Disadvantages: 1. The amount of wear-resistant filler added is large, resulting in insufficient rigidity or toughness of the material, and it cannot be taken into account at the same time. 2. The temperature resistance of the material is not enough. Under continuous high temperature work, the workpiece is easy to deform. 3. The heat of the material Poor stability, after working for a long time, the mechanical properties will drop significantly , which is a general term for polymers containing amide groups in the repeating unit of the macromolecular main chain; polyamides have good comprehensive properties, including mechanical properties, heat resistance, wear resistance and chemical resistance, and self-lubricating properties , low coefficient of friction, and has certain flame retardant properties; polyamide 66, as an important species in the polyamide family, has many advantages, but as some special wear-resistant structural functional parts, the rigidity of the material needs to be further improved. Toughness, heat resistance, wear resistance, reduce water absorption and improve dimensional stability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-strength and wear-resistant polyamide composite material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Use the following raw materials in weight percentage

[0022] Polyamide 66 (hereinafter referred to as A) (viscosity 2.6-3.0) 42%

[0023] Graft toughening agent (hereinafter referred to as B) 7%

[0024] Copolymerized toughening agent (hereinafter referred to as C) 3%

[0025] Wear-resistant masterbatch (hereinafter referred to as D) 15%

[0026] Wear-resistant reinforcing filler (hereinafter referred to as E) (composite material, short fiber) 30%

[0027] Heat stabilizer (hereinafter referred to as F) 0.7%

[0028] Nucleating agent (hereinafter referred to as G) 0.8%

[0029] Lubricant (hereinafter referred to as H) 1%

[0030] Silane coupling agent (hereinafter referred to as I) 0.5%

[0031] Prepare the PA66 composite material by the above components through the following process

[0032] Step 1, preparation of wear-resistant masterbatch:

[0033] Low viscosity polyamide nylon 66 (viscosity 2.0-2.6), 82.5%

[0034] Wear-resistant filler 1 (molybdenum disulf...

Embodiment 2

[0045] Adopt the raw material of following weight percentage:

[0046] Polyamide 66 (viscosity 2.6-3.0) 46%

[0047] Graft toughener 6%

[0048] Copolymer toughener 3%

[0049] Wear-resistant masterbatch 12%

[0050] Wear-resistant reinforcing filler (giant stone fiberglass, 988A-2000) 30%

[0051] Heat stabilizer 0.7%

[0052] Nucleating agent 0.8%

[0053] Lubricant 1%

[0054] Silane coupling agent 0.5%

[0055] The preparation of wear-resistant masterbatch adopts the following weight percentages:

[0056] Low viscosity polyamide nylon 66 (viscosity 2.0-2.6), 86.5%

[0057] Wear-resistant filler 1 (molybdenum disulfide from Hefei Jinxin, molecular weight 160.07) 6%

[0058] Wear-resistant filler 2 (Shanghai Huayi Graphite No. 0, 900 mesh) 6%

[0059] Lubricant 1%

[0060] Silane coupling agent 0.3%

[0061] Heat stabilizer 0.2%

[0062] The preparation of the wear-resistant masterbatch is the same as in Example 1.

[0063] For the preparation of the composite ma...

Embodiment 3

[0065] Adopt the raw material of following weight percentage:

[0066] Polyamide 66 46%

[0067] Graft toughener 5%

[0068] Copolymer toughener 3%

[0069] Wear-resistant masterbatch 13%

[0070] Wear-resistant reinforcing filler (giant stone fiberglass, 988A-2000) 30%

[0071] Heat stabilizer 0.7%

[0072] Nucleating agent 0.8%

[0073] Lubricant 1%

[0074] Silane coupling agent 0.5%

[0075] The preparation of wear-resistant masterbatch adopts the following weight percentages:

[0076] Low viscosity polyamide nylon 66 (viscosity 2.0-2.6), 81.5%

[0077] Wear-resistant filler 1 (molybdenum disulfide from Hefei Jinxin, molecular weight 160.07) 7%

[0078] Wear-resistant filler 2 (Japan Daikin L-5) 10%

[0079] Lubricant 1%

[0080] Silane coupling agent 0.3%

[0081] Heat stabilizer 0.2%

[0082] The preparation of the composite material of embodiment 3 is the same as that of embodiment 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a high-strength and wear-resistant polyamide composite material and a preparing method thereof. The composite material comprises, by weight, 30-70 parts of polyamide66, 3-10 parts of grafting-type toughening agent, 3-10 parts of copolymerization-type toughening agent, 10-50 parts of wear-resistant master batches, 20-40 parts of wear-resistant reinforcing filler, 0.1-3 parts of heat stabilizer, 0.1-3 parts of nucleating agent, 0.1-3 parts of lubricating agent and 0.1-1 part of silane coupling agent. The preparing method includes the steps that the polyamide66, the grafting-type toughening agent, the copolymerization-type toughening agent, the wear-resistant master batches and the wear-resistant reinforcing filler are weighed according to the weight, added into a mixing machine and mixed to be even; the heat stabilizer, the nucleating agent, the lubricating agent and the silane coupling agent are weighed according to the weight, poured into the mixing machine and mixed with the mixture to be even; the final even mixing liquid is put into a double-screw extruder and extruded to be subjected to injection molding through an injection molding machine, and the composite material is obtained. The high-strength and wear-resistant polyamide composite material and the preparing method thereof have the advantages of being high in rigidity, toughness, heat resistance, wear resistance, processing accuracy and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polyamide composite material with high rigidity, high toughness, high heat resistance, high wear resistance and high dimensional stability and a preparation method thereof. Background technique [0002] With the rapid development of modern material science, more and more metal materials are replaced by engineering plastics; engineering plastics are often used to make structural functional parts such as gears, bearings, and bushings. Factors such as temperature, humidity, and rotational speed will affect the material. Therefore, wear-resistant engineering plastics are required to have a low friction coefficient and friction loss, and they should also have high rigidity, high toughness, and high heat resistance; at present, general wear-resistant engineering plastics have the following properties: Disadvantages: 1. The amount of wear-resistant filler added is large, resulting in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L77/06C08K13/06C08K9/06C08K3/30C08K7/14C08J3/22B29C47/92B29C48/92
CPCC08L77/06B29C48/92B29C2948/92704C08J3/226C08J2377/06C08J2477/06C08K2201/014C08L2201/08C08L2205/025C08L2205/035C08L2205/06C08L2205/24C08K13/06C08K9/06C08K2003/3009C08K3/04C08K7/14
Inventor 瞿锡娟张电海何宏武彭耀
Owner NANJING DELLON ENG PLASTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap