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A kind of high-strength and high-toughness epoxy composite material and manufacturing method

A composite material, high-strength and high-toughness technology, applied in the field of composite material manufacturing, can solve problems such as difficulty in meeting user's personalized customization needs, complex dispersion process of preparation method, pore structure size, uneven distribution, etc., to achieve compact structure and simple manufacturing process , The effect of improving the comprehensive mechanical properties

Active Publication Date: 2022-07-26
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, toughening often results in a decrease in the strength of composite materials;
[0005] (2) Although high-performance fillers such as graphene and carbon nanotubes can achieve the effect of strengthening and toughening at the same time, the preparation method usually requires a complicated dispersion process, the preparation cycle is long, and it is difficult to meet the growing needs of users for personalized customization;
[0006] (3) Although the porous foam structure can also achieve the effect of toughening, it also faces the problem of a decrease in the strength of the composite material, and the existing foam structure is usually manufactured by a foaming process, and the size and distribution of the pore structure are uneven, resulting in Poor performance controllability

Method used

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  • A kind of high-strength and high-toughness epoxy composite material and manufacturing method
  • A kind of high-strength and high-toughness epoxy composite material and manufacturing method
  • A kind of high-strength and high-toughness epoxy composite material and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] (1) Prepare a PTFE plate, the flatness of the plate is 0.01mm, and the surface roughness is Ra0.2;

[0071] (2) The dust-free paper is completely immersed in HPLC acetone, and the Teflon plate is wiped after taking out to remove impurities on the surface of the plate, and after 15min of acetone is evaporated at room temperature, the treated Teflon plate is used as a manufacturing substrate;

[0072] (3) through the vacuum planetary mixer, set the rotation speed of the mixer to be 2500rpm, and the vacuum degree to be -99.5kPa, fully mix 10wt% of nano-silicon dioxide powder with epoxy resin and remove air bubbles to prepare epoxy composite ink;

[0073] (4) loading the epoxy composite ink into the screw valve 5;

[0074] (5) Install the printing nozzle 7 with an inner diameter of 100 μm on the screw valve 5;

[0075] (6) Set the voltage of the screw valve 5 to 4V (the corresponding rotational speed is 50rpm), the feed air pressure of the screw valve 5 to 500kPa, set the ...

Embodiment 2

[0082] (1) Prepare a PTFE plate, the flatness of the plate is 0.01mm, and the surface roughness is Ra0.2;

[0083] (2) The dust-free paper is completely immersed in HPLC acetone, and the Teflon plate is wiped after taking out to remove impurities on the surface of the plate, and after 15min of acetone is evaporated at room temperature, the treated Teflon plate is used as a manufacturing substrate;

[0084] (3) through the vacuum planetary mixer, set the rotation speed of the mixer to be 2500rpm, and the vacuum degree to be -99.5kPa, fully mix 10wt% of nano-silicon dioxide powder with epoxy resin and remove air bubbles to prepare epoxy composite ink;

[0085] (4) loading the epoxy composite ink into the screw valve 5;

[0086] (5) Install the printing nozzle 7 with an inner diameter of 200 μm on the screw valve 5;

[0087] (6) Set the voltage of the screw valve 5 to 4V (the corresponding rotational speed is 50rpm), the feed air pressure of the screw valve 5 to 500kPa, set the ...

Embodiment 3

[0094] (1) Prepare a PTFE plate, the flatness of the plate is 0.01mm, and the surface roughness is Ra0.2;

[0095] (2) The dust-free paper is completely immersed in HPLC acetone, and the Teflon plate is wiped after taking out to remove impurities on the surface of the plate, and after 15min of acetone is evaporated at room temperature, the treated Teflon plate is used as a manufacturing substrate;

[0096] (3) through the vacuum planetary mixer, set the rotation speed of the mixer to be 2500rpm, and the vacuum degree to be -99.5kPa, fully mix 10wt% of nano-silicon dioxide powder with epoxy resin and remove air bubbles to prepare epoxy composite ink;

[0097] (4) loading the epoxy composite ink into the screw valve 5;

[0098] (5) Install the printing nozzle 7 with an inner diameter of 400 μm on the screw valve 5;

[0099] (6) Set the screw valve voltage to 4V (the corresponding rotational speed is 50rpm), the feed air pressure of the screw valve to 500kPa, set the movement sp...

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Abstract

The invention relates to a high-strength and high-toughness epoxy composite material and a manufacturing method, comprising a solid reinforcing layer and a regular pore structure toughening layer, wherein the solid reinforcing layer and the regular pore structure toughening layer are alternately stacked from top to bottom, and the The top and bottom layers of the epoxy composite are solid reinforcement layers. The invention has compact, reasonable structure and convenient operation. Based on the 3D printing manufacturing process, the solid reinforcing layer and the regular pore structure toughening layer are stacked layer by layer into a mesoscale multi-layer structure, wherein the solid reinforcing layer can improve the composite structure. The role of material strength, the regular porous toughening layer plays the role of preventing crack propagation and improving material toughness, thereby achieving the effect of strengthening and toughening at the same time, solving the brittleness of epoxy composite materials in the prior art and the difficulty of strength and toughness. The disadvantage of synergistic enhancement has the advantages of simple manufacturing process and greatly improved comprehensive mechanical properties.

Description

technical field [0001] The invention relates to the technical field of composite material manufacturing, in particular to a high-strength and high-toughness epoxy composite material and a manufacturing method. Background technique [0002] Because of its excellent properties such as light weight, high strength and corrosion resistance, epoxy composite materials have extremely wide application value in aerospace, microelectronic packaging, high-performance adhesive structures and other fields. However, due to the shortcomings of brittleness, poor fracture toughness and poor impact toughness of epoxy composites, its application range is limited to a certain extent. Therefore, how to improve the toughness of epoxy composites while maintaining its high mechanical strength is an urgent problem to be solved. [0003] At present, the manufacturing of high-strength and high-toughness epoxy composites mainly has the following limitations: [0004] (1) The main toughening method of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/209B29C64/124B29C64/245B33Y10/00B33Y30/00
CPCB29C64/209B29C64/124B29C64/245B33Y30/00B33Y10/00
Inventor 王震宇张行乐仰钧毅李明刘禹姜晶
Owner JIANGNAN UNIV