High-permeability intercalation toughening material and preparation method thereof

A high-permeability and permeable layer technology, applied in the field of high-permeability intercalation toughening materials and their preparation, can solve the problem of not being able to have high permeability and high toughness at the same time, and improve the interlayer damage resistance and material length. Unlimited, the effect of reducing the difficulty of coating

Active Publication Date: 2022-05-03
CSIC NO 12 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] An object of the present invention is to provide a high-permeability intercalation toughening material, which solves the problem that existing resin composite materials cannot have high permeability and high toughness at the same time

Method used

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  • High-permeability intercalation toughening material and preparation method thereof
  • High-permeability intercalation toughening material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] The preparation of a high-permeability intercalated toughening material composited by polyurethane and aramid fiber comprises the following steps:

[0034] Step 1, prepare a layer of fiber permeable layer, the surface density of the fiber permeable layer is 10g / m 2 , the fiber permeable layer is a chopped fiber mat, made of aramid fiber, and the fiber length in the chopped fiber mat is 6mm;

[0035] Step 2, put the polyurethane pellets into the melting equipment, and melt them to a fluid at a high temperature of 220°C;

[0036] Step 3, spray the melted polyurethane through a high-speed hot air nozzle, and the surface density of the fiber permeable layer prepared in step 1 is 40g / m 2 The uniform network-shaped toughening layer is conveyed to the position of the paving roller by the roller; the viscous filamentous toughening material in the molten state only bonds the floating fibers on the surface of the chopped fiber permeable layer, and will not infiltrate into the pe...

Embodiment 2

[0040] The preparation of a high-permeability intercalation toughening material composited by polyamide and glass fiber comprises the following steps:

[0041] Step 1, prepare one layer of fiber permeable layer, the surface density of fiber permeable layer is 8g / m 2 , the fiber permeable layer is chopped fiber mat, made of glass fiber, the glass fiber length in the chopped fiber mat is 5mm;

[0042]Step 2, put the polyamide pellets into the melting equipment, and melt them to a fluid at a high temperature of 250°C;

[0043] Step 3, the melted polyamide is sprayed through a high-speed hot air nozzle, and the surface density of the fiber permeable layer prepared in step 1 is 60g / m 2 The mesh toughening layer is conveyed to the position of the laying roller through the roll roller;

[0044] Step 4, laying and bonding a layer of chopped glass fiber permeable layer on the surface of the uncooled network toughening layer, and after cooling down on the production line, a high-stren...

Embodiment 3

[0047] The preparation of a high-permeability intercalation toughening material composited by polyethersulfone and carbon fiber comprises the following steps:

[0048] Step 1, prepare a layer of fiber permeable layer, the surface density of the fiber permeable layer is 10g / m 2 , the fiber permeation layer is chopped fiber mat, made of carbon fiber, the length of carbon fiber in the chopped fiber mat is 6mm;

[0049] Step 2, put the polyethersulfone pellets into a melting device, and melt it to a fluid at a high temperature of 400°C;

[0050] Step 3, spray the melted polyethersulfone through a high-speed hot air nozzle, and spray on the upper surface of the fiber permeable layer prepared in step 1. The surface density is 80g / m 2 The mesh toughening layer is conveyed to the position of the laying roller through the roll roller;

[0051] Step 4: Lay and bond a layer of chopped carbon fiber permeable layer on the surface of the uncooled network toughening layer. After cooling do...

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Abstract

The invention discloses a high-permeability intercalation toughening material which is composed of a toughening layer and permeable layers, the toughening layer is located on a core part, the permeable layers are located on the two sides of the toughening layer and are of a sandwich structure, the weight percentage of the toughening layer is 65-80%, the weight percentage of the permeable layers on the two sides is the same, and the toughening layer is of a silk-connected net structure and is made of thermoplastic resin. And the permeable layer is a chopped fiber felt. The invention also discloses a preparation method of the high-permeability intercalation toughening material, which comprises the following steps: melting the solid toughening layer resin into fluid, spraying the netted toughening layer on the upper surface of the lower fiber permeation layer through high-speed hot airflow spinning, and finally paving and bonding the fiber permeation layer on the surface of the uncooled toughening layer to obtain the high-permeability intercalation toughening material. The prepared high-permeability intercalation toughening material is high in air permeability, resin of the toughening layer is fused with fibers of the permeation layer after diffusion, a reliable toughening gradient structure is formed, interlayer concentrated stress is effectively resisted, and the high-permeability intercalation toughening material has good impact resistance.

Description

technical field [0001] The invention belongs to the technical field of organic composite materials, and relates to a high-permeability intercalation toughening material and a preparation method thereof. Background technique [0002] Liquid Composite Molding (LCM) process is one of the mainstream processes for preparing thermosetting resin-based composite materials. It is an effective way to produce high-performance, low-cost composite products. The flow of thermosetting resin realizes the impregnation of dry fibers or fabrics. Specifically, the fiber reinforced material is laminated in the mold, and then the liquid resin is injected into the mold cavity under a certain pressure to infiltrate the fiber reinforced material while removing air, filling and curing Post-demolding composite products. Typical process technologies of LCM include RTM, VARTM, VIP, SCRIMP, etc. [0003] At present, several commonly used toughening methods are adding rubber elastomers to thermosetting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/02B32B17/12B32B27/40B32B27/02B32B17/10B32B9/00B32B9/04B32B27/28B32B38/00B32B7/12B32B37/12B32B38/08D04H1/08D04H3/16
CPCB32B5/022B32B5/26B32B38/0036B32B38/0004B32B38/00B32B7/12B32B37/1284B32B38/08D04H1/08D04H3/16B32B2038/0076B32B2260/023B32B2260/046B32B2250/20B32B2262/0292B32B2262/0215B32B2262/101B32B2262/106B32B2250/40B32B2307/558
Inventor 葛世超闵雪涛万亚静
Owner CSIC NO 12 RES INST
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