Phthaphthalonitrile resin prepreg, composite material and preparation method of composite material

A technology of phthalonitrile resin and phthalonitrile, which is applied in the fields of phthalonitrile resin prepreg, composite material and preparation thereof, can solve the difficulty of resin viscosity control, is not suitable for industrial production of complex components, etc. problems, to achieve excellent comprehensive performance, easy to achieve, and ensure product quality.

Active Publication Date: 2018-08-28
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

This patented technology allows for better control over the final dimensions (length or diameter), strength, stiffness, flexibility, etc., while also improving thermal stability at higher temperatures compared to traditional methods such as liquid casting techniques. It achieves this by reducing the amount of residual solvent needed when making composites due to its ability to reduce viscosities and improve their flowability. By adjusting these processes based upon factors like type of matrix polymerization catalyst(catalytic component). Overall, this new approach simplifies manufacture procedures and provides superior products made from thermosetting plastic composition.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance and durability of thermoset plastic products made from phthaonic acid imidazone copolymer resin due to their unique chemical composition and physical characteristics like thermal conductivity, elongational strength, flexibility, solubility, etc., making them ideal candidates for various industries where strong demand exists today. However, current methods require expensive equipment and cannot meet these demands without breaking down the entire product into smaller parts before being cured.

Method used

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  • Phthaphthalonitrile resin prepreg, composite material and preparation method of composite material
  • Phthaphthalonitrile resin prepreg, composite material and preparation method of composite material
  • Phthaphthalonitrile resin prepreg, composite material and preparation method of composite material

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preparation example Construction

[0047] The phthalonitrile composite material of the present invention is prepared from the above-mentioned phthalonitrile resin prepreg, such as figure 1 Shown is the phthalonitrile prepreg preparation and curing process flow chart of the present invention, the specific preparation method of the phthalonitrile composite material of the present invention comprises the following steps:

[0048] (1) Preparation of phthalonitrile prepreg

[0049] The phthalonitrile resin is diluted with a low-boiling point solvent at room temperature, and evenly brushed on the fiber cloth in proportion, and the number of brushing is ≥ 2 times, and the prepared prepreg is fully allowed to stand at room temperature until the volatile content (low Boiling point solvent) mass percentage content≤4%, to ensure that the low boiling point solvent in the prepreg is fully volatilized.

[0050] (2) Phthalonitrile prepreg preheating treatment

[0051] Lay the phthalonitrile prepreg to the desired thickness ac...

Embodiment 1

[0058] A phthalonitrile resin prepreg, which is prepared by mixing phthalonitrile resin and acetone in a mass ratio of 100:120 to make a glue solution, and then uniformly coating the glue solution on 120 parts of carbon fiber cloth to make a prepreg Dipping material, the number of times of brushing is 2 times, and it is fully aired until the volatile content in it drops below 4%. Wherein the viscosity temperature rise curve of phthalonitrile resin is as follows figure 2 As shown, the viscosity is less than 1Pa·s in a wide temperature range. The molding steps of the phthalonitrile composite material are as follows: (1) Prepreg is cut according to the requirements, and 8 layers of carbon cloth are used to lay layers along the shape of the mold; (2) The product is covered with 250°C-resistant auxiliary materials and vacuum bags ;(3) Put it in an oven and heat it to 170°C for 1h; (4) Put the product into an autoclave for curing under the condition of vacuuming, the curing system...

Embodiment 2

[0060] A phthalonitrile resin prepreg, which is prepared by mixing phthalonitrile resin and acetone at a mass ratio of 100:185 to make a glue solution, which is then poured into a glue tank, and wet-process yarn-discharging equipment is used for non-toxic For the preparation of weft prepreg, the resin content is controlled at 44±4% of the total weight of the prepreg; another phthalonitrile resin prepreg is composed of phthalonitrile resin and acetone in a mass ratio of 100 : 120 to make a glue solution, and then evenly coat the glue solution on 120 parts of carbon fiber fabric cloth to make a prepreg, and the number of times of painting is 2 times. The prepreg is fully aired at room temperature until the volatile content in it falls below 4%. The forming steps of the phthalonitrile composite material are as follows: (1) The phthalonitrile carbon fiber non-weft prepreg and the fabric cloth prepreg are respectively cut according to the requirements, according to [carbon cloth / 90...

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Abstract

The invention relates to a phthalonitrile resin prepreg, a composite material and a preparation method of the composite material. A mode for pre-heat treatment of the phthalonitrile prepreg is adoptedfor controlling the viscosity state of the prepreg during solidification. At the same time, a segmented solidification process is adopted, after auxiliary materials are used for conducting vacuumingsolidification on a product at the temperature lower than or equal to 250 DEG C, post-treatment is conducted at the temperature higher than 300 DEG C without auxiliary materials, so that the limitations of the viscosity of the prepreg and the temperature resistance of the auxiliary materials to the molding process of the phthalonitrile composite material are overcome, and complex components of thephthalonitrile composite material with high temperature resistance, excellent mechanical properties and good molding quality can be industrially produced. The phthalonitrile resin prepreg with good processability, high molding quality, high temperature resistance and excellent mechanical properties is provided and can be widely used in aerospace engineering and ship engineering.

Description

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Claims

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Application Information

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Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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