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A kind of pa11/rgo composite material and preparation method thereof

A composite material, PA11 technology, applied in the field of PA11/RGO composite material and its preparation, can solve the problems of high price, low impact strength, and practical constraints, and achieve the effect of small loss of raw materials and simple operation

Active Publication Date: 2021-10-22
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the impact of low impact strength and high price, PA11 is subject to many restrictions in practical application

Method used

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  • A kind of pa11/rgo composite material and preparation method thereof
  • A kind of pa11/rgo composite material and preparation method thereof
  • A kind of pa11/rgo composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The method of preparing a PA11 / RgO (0.2%) composite material, the method includes the steps of:

[0058] (1) Pretreatment

[0059] (a) Pretreatment of graphene: Add 15 g of graphene to a water solution having a volume fraction of 70%, ultrasonic dispersion of 20 min, and dried under -40 ° C for 2 h, then placed in an oven at 60 ° C for 2h, Get pre-treated graphene;

[0060] (b) Pretreatment of PA11: Place the PA11 in a vacuum drying tank in a vacuum drying tank for drying treatment for drying treatment, obtaining a pretreated PA11;

[0061] (2) Weigh 200g step (1) preproving PA11 and 0.4 g of pre-treated graphene mixed, obtain a mixture, and then heat up the plate vulcanizer up and down and mold to 210 ° C, take out the mold, weigh 180g The mixture is placed in a mold, and the mold is placed onto the flat vulcanizer until it is preheated to prepare 4 min, and the material is melted; after applying 12 MPa pressure, it is performed once, pressurized for 6 min. Then remove t...

Embodiment 2

[0063] The method of preparing a PA11 / RgO (0.4%) composite material is substantially the same as the preparation method of Example 1, and the difference is only that the amount of graphene pre-treated in step (2) is 0.8. .

Embodiment 3

[0065] The preparation method of a PA11 / RgO (0.6%) composite material is substantially identical to the preparation method of Example 1, and the difference is only that the amount of graphene pre-treated in the step (2) of the present embodiment is 1.2. g.

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Abstract

The invention relates to a PA11 / RGO composite material and a preparation method thereof, belonging to the technical field of composite materials. The PA11 / RGO composite material of the present invention is to mix the pretreated PA11 and the pretreated graphene evenly to obtain the mixed material; then the upper and lower molds and molds of the molding machine are heated to 200-220°C, the mold is taken out, and the mixture is The material is placed in the mold, and then the mold is put into a molding machine for compression molding, wherein: the amount of the graphene is 0.05-1% of the mass of PA11. The present invention introduces graphene (RGO) particles into PA11, which not only changes the crystal structure of PA11 from α crystal form to γ ​​crystal form, but also promotes the crystallization behavior of PA11, and also improves the impact performance, dielectric constant, and magnetic permeability of PA11. Rate and return loss, reduce the production cost of PA11.

Description

Technical field [0001] The present invention belongs to the technical field of composite materials, and more particularly to a PA11 / RGO composite material and a preparation method thereof. Background technique [0002] Due to the rapid development of human social productivity and science and technology, people continue to propose a variety of new requirements for materials to meet the current desired, and the emergence of polymer and polymer composites has gradually replaced other materials. Nylon is a thermoplastic polymer that can withstand loads and is very wide in mechanical manufacturing. At the beginning of the 20th century, DuPont, DuPont, first launched research, and then achieved industrial production. Nylon is the new darling of the material circles at that time, with many excellent performance, people have developed a variety of products related to products, and have widespread praise. [0003] Nylon 11 (PA11) is France Akama, which has achieved industrial production...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08K9/04C08K3/04
CPCC08K9/04C08K3/042C08L77/02
Inventor 王志强王泓珺李迎春李洁王文生赵涛张才渡燕晓辉
Owner ZHONGBEI UNIV