Surface treatment method for improving low-speed impact resistant performance of resin-based composite material

A composite material and surface treatment technology, applied in the field of composite material impact resistance, to achieve the effect of eliminating micro-damage, low cost and less time-consuming

Inactive Publication Date: 2013-02-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no mature method for physical modification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A surface treatment method for improving the low-velocity impact resistance of resin-based composite materials, the steps are as follows:

[0021] Step 1: First remove the burrs and oxides on the outer surface of the iron-based amorphous alloy sheet whose thickness is twice the thickness of the single layer of the resin-based composite material to be treated by hand grinding, and polish the outer surface to make it smooth ;

[0022] Step 2: Next, the iron-based amorphous alloy sheet with a flat outer surface is processed by cutting into an iron-based amorphous alloy sheet that can be adapted to cover the outer surface of the resin-based composite material to be treated;

[0023] Step 3: Gluing each iron-based amorphous alloy sheet to the corresponding outer surface of the resin-based composite material with an ethyl acrylate adhesive;

[0024] Step 4: Finally, the resin-based composite material glued with iron-based amorphous alloy sheets is cleaned by chemical wet cle...

Embodiment 2

[0027] A surface treatment method for improving the low-velocity impact resistance of resin-based composite materials, the steps are as follows:

[0028] Step 1: First remove the burrs and oxides on the outer surface of the iron-based amorphous alloy sheet whose thickness is 4 times the thickness of the single layer of the resin-based composite material to be treated by mechanical grinding, and polish the outer surface smooth;

[0029] Step 2: Next, the iron-based amorphous alloy sheet with a flat outer surface is processed by cutting into an iron-based amorphous alloy sheet that can be adapted to cover the outer surface of the resin-based composite material to be treated;

[0030] Step 3: Gluing each iron-based amorphous alloy sheet to the corresponding outer surface of the resin-based composite material with an epoxy resin structural adhesive;

[0031] Step 4: Finally, the resin-based composite material glued with the iron-based amorphous alloy sheet is cleaned by chemical ...

Embodiment 3

[0034] A surface treatment method for improving the low-velocity impact resistance of resin-based composite materials, the steps are as follows:

[0035] Step 1: First remove the burrs and oxides on the outer surface of the iron-based amorphous alloy sheet whose thickness is 6 times the thickness of the single layer of the resin-based composite material to be processed, and polish the outer surface to make it smooth ;

[0036] Step 2: Next, the iron-based amorphous alloy sheet with a flat outer surface is processed by chemical milling into an iron-based amorphous alloy sheet that can be adapted to cover the outer surface of the resin-based composite material to be processed;

[0037] Step 3: Gluing each iron-based amorphous alloy sheet to the corresponding outer surface of the resin-based composite material with an ethyl acrylate adhesive;

[0038] Step 4: Finally, the resin-based composite material glued with iron-based amorphous alloy sheets is cleaned by chemical wet clean...

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Abstract

The invention relates to a surface treatment method for improving the low-speed impact resistant performance of a resin-based composite material. In the surface treatment method, the micro-damage of the low-speed impact of foreign objects to the inside of the resin-based composite material is reduced or eliminated in a mode of gluing amorphous alloy sheets on the outer surface of the resin-based composite material. When the resin-based composite material on which the amorphous alloy sheets are glued is subjected to the low-speed impact, the low-speed impact can be transferred uniformly on thecontacted surfaces of the amorphous alloy sheets and are distributed on the surfaces of the integral amorphous alloy sheets widely and quickly, and dispersed energy is transferred to the surface of the resin-based composite material in a mode of depression of order to reduce the impact on the resin-based composite material effectively, so that the micro-damage caused by the low-speed impact to the resin-based composite material is reduced or eliminated effectively. The surface treatment method is simple, low in cost and time consumption and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of impact resistance of composite materials, in particular to a surface treatment method for improving the low-energy impact resistance of resin-based composite materials. Background technique [0002] Resin-based composite materials are widely used in aerospace and other fields due to their excellent properties of high specific stiffness, high specific strength, high heat resistance and high corrosion resistance, but their low-speed impact resistance is poor. In the process, it is easy to produce micro-damages that are invisible to the naked eye and difficult to detect. This micro-destruction usually occurs in the deep layer or back of the resin-based composite parts, causing great safety hazards in the application field. Therefore, it is necessary to improve the reliability, safety and durability of aerospace components by adopting appropriate improvement methods to reduce or eliminate micro-damage and im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/12
Inventor 刘马宝廉媛媛王娟
Owner XI AN JIAOTONG UNIV
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