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Epoxy matrix resin and prepreg and preparation method thereof and device for preparation thereof

A technology of epoxy matrix and epoxy resin, which is applied in the field of epoxy matrix resin, prepreg and its preparation and the device used in the preparation of prepreg, which can solve the problem of poor performance of epoxy matrix resin cured product and can not meet the performance of composite materials Requirements, less precise control of resin content, etc., to achieve good toughening effect, stable toughening effect, and improved bending strength

Inactive Publication Date: 2011-06-29
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the phenomenon that the state of the toughening phase in the cured product of the existing epoxy matrix resin is not uniform, or even no phase separation occurs, resulting in poor performance of the cured product of the epoxy matrix resin, which cannot meet the performance requirements of the composite material, and the existing The preparation method of the prepreg is complicated, the resin content in the prepreg is controlled inaccurately, and the manufacturing cost of the existing prepreg preparation device is high. The invention provides an epoxy matrix resin, a prepreg and its preparation Method and Apparatus for Prepreg Preparation

Method used

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  • Epoxy matrix resin and prepreg and preparation method thereof and device for preparation thereof
  • Epoxy matrix resin and prepreg and preparation method thereof and device for preparation thereof

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specific Embodiment approach 1

[0029] Specific embodiment one: The epoxy matrix resin of this embodiment consists of 40 parts by mass of novolac epoxy resin, 60 parts of bisphenol A epoxy resin, 2 to 10 parts of core-shell polymer, and 15 to 24 parts of curing agent and 3.0 to 6.0 parts of curing accelerator, wherein the curing agent is a combination of dicyandiamide and 4,4'-diaminodiphenyl sulfone, wherein 4,4'-diaminodiphenyl sulfone and bis The mass parts of cyanamide are respectively 18 parts and 6 parts, 14 parts and 7 parts, 10 parts and 8 parts, or 6 parts and 9 parts; the curing accelerator is organic urea or its derivatives.

[0030] The core-shell polymer according to this embodiment has a particle diameter of 100 to 300 nm. The core-shell polymer can be a commercially available product or can be prepared by an existing published preparation method.

[0031] Carry out performance test to the cured product of the epoxy matrix resin of the present embodiment cured 2~3 hours under the condition of ...

specific Embodiment approach 2

[0033] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the epoxy matrix resin consists of 40 parts by mass of novolac epoxy resin, 60 parts of bisphenol A epoxy resin, 3 to 8 parts of core-shell polymer, 18-22 parts of curing agent and 4.0-5.0 parts of curing accelerator. Other parameters are the same as in the first embodiment.

[0034] In this embodiment, it is more preferable that the epoxy matrix resin consists of 40 parts of novolac epoxy resin, 60 parts of bisphenol A epoxy resin, 5 parts of core-shell polymer, 24 parts of curing agent and 5.0 parts of curing agent by mass parts. Accelerators are made.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the core-shell polymer uses polybutadiene rubber, styrene-butadiene rubber or polymethylsiloxane as the soft core, and polymethylsiloxane as the soft core. Methyl acrylate is hard shell. Other parameters are the same as in the first embodiment.

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Abstract

The invention discloses an epoxy matrix resin, a prepreg, a preparation method of the prepreg and a device for preparation of the prepreg, in order to solve the problem of poor performance of an epoxy matrix resin curing substance caused by uneven toughening phase state even no phase separation in the traditional epoxy matrix resin curing product, the problem of complex technique of the traditional preparation method of the prepreg and relatively imprecise control on the resin content in the prepreg, and the problem of high manufacturing cost of the traditional device for preparing the prepreg. The epoxy matrix resin is prepared from a phenolic epoxy resin, a bisphenol A epoxy resin, a core shell polymer, a curing agent and a curing accelerator; the prepreg is prepared from the epoxy matrix resin and fiber woven cloth; and the prepreg is prepared through the device for producing the prepreg by a heat fusion method. After and before the resin is cured, the toughening phase state is not changed and is uniformly dispersed; and the toughening phase state effect is good and stable. The mechanical property of the composite material obtained by curing with the prepreg is high.

Description

technical field [0001] The invention relates to an epoxy matrix resin, a prepreg, a preparation method thereof and a device for preparing the prepreg. Background technique [0002] Epoxy / glass fiber composite materials have the characteristics of light weight, high strength, large modulus, good corrosion resistance, excellent electrical properties, wide range of raw materials, good craftsmanship, easy processing and molding, high production efficiency, etc., and have strong material designability It has become an irreplaceable important material in the national economy, national defense construction and scientific and technological development, and is one of the most widely used composite materials at present. [0003] Medium-temperature curing epoxy matrix resin has been widely used in glass fiber reinforced composite material prepregs because of its advantages such as low curing temperature, short molding cycle, and meeting storage requirements. However, because the cured...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08L63/04C08L51/04C08L51/08C08G59/50C08K13/04C08K7/14C08K7/06B29C70/28
Inventor 曲春艳王德志毛勇李洪峰张杨冯浩宿凯王海民李公淳
Owner INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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