Resin matrix applicable to microwave curing and preparation method of resin matrix

A microwave curing and resin matrix technology, applied in the field of composite material preparation, can solve the problems of high viscosity, low resin molecular polarity and high resin matrix viscosity, and achieve excellent comprehensive mechanical properties, high dimensional stability and good heat resistance. Effect

Active Publication Date: 2017-05-10
BEIJING UNIV OF CHEM TECH
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Problems solved by technology

However, due to the low polarity of the selected resin matrix, it has no good response and curing activity to microwaves, resulting in the strength and other properties of the cured resin being lower than those obtained by traditional thermal curing methods.
R.Yusoff et al [Journal of Engineering Science & Technology.2007,2(2):151-163] used microwaves to cure carbon fiber / epoxy resin RTM molding composite materials, although the cured product obtained a degree of curing equivalent to that of traditional thermal curing methods , but due to the high viscosity of the selected resin matrix and the large difference in microwave response between the matrix and the carbon fiber, there are obvious defects in the composite material, which greatly reduces the overall mechanical properties of the composite material
Generally speaking, there are some technical deficiencies in the microwave-curable resin matrix reported in the literature: first, the composition of the resin matrix is ​​single, the molecular polarity of the selected resin is low, the microwave response of the entire resin matrix is ​​poor, and the final curing degree is not high; The microwave curing process of the resin matrix is ​​too simple, the microwave curing efficiency is low and the matching with the microwave reactivity of the resin is poor; the third is that the viscosity of the resin matrix is ​​high, and the interface wettability with the fiber is poor, so it cannot be used for liquid molding processes such as winding

Method used

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  • Resin matrix applicable to microwave curing and preparation method of resin matrix
  • Resin matrix applicable to microwave curing and preparation method of resin matrix

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Effect test

Embodiment 1

[0022] The main resin is fluorine-containing glycidyl ether (DGEBHFA), the diluent is phenyl glycidyl ether type epoxy resin (H63), and the curing agent is a compound of low-viscosity polyamide V-125 and boron trifluoride-benzylamine Anchor1040 The nano-filler adopts carbon nanofiber, and the carbon fiber adopts T700 from Japan Toray Company. The mass ratio of main resin, diluent, curing agent and nano filler is 60:40:50::0.5. The preparation process is as follows: according to the formula, first mix the low-viscosity polyamide V-125 and boron trifluoride-benzylamine Anchor1040 at room temperature to obtain a curing agent compound, and mix the main resin, nano filler Mixed with diluent and ultrasonically treated, ultrasonic treatment conditions: power 60Kw, temperature 30°C, time 2h. Then mix the main resin, nano filler, diluent and curing agent evenly, the mixing conditions are oil bath temperature 60°C, stirring speed 800 rpm, time 40min. Then the mixed resin matrix was pl...

Embodiment 2

[0027]The main resin adopts fluorine-containing glycidyl ether (DGEBHFA) and fluorine-containing glycidyl ester (BGTF), the diluent adopts benzyl glycidyl ether type epoxy resin (692), and the curing agent adopts aminocyclotripolyphosphazene HANPCP and low-viscosity The compound of polyamide V-125, the nano filler is montmorillonite, and the carbon fiber is T700 from Toray Corporation of Japan. The mass ratio of main resin, diluent, curing agent and nano filler is 70:30:45:1. The preparation process is as follows: according to the formula, first mix aminocyclotripolyphosphazene HANPCP and low-viscosity polyamide V-125 at 60°C to obtain a curing agent compound, and mix the main resin, nano filler Mixed with diluent and ultrasonically treated, ultrasonic treatment conditions: power 60Kw, temperature 30°C, time 2h. Then mix the main resin, nano filler, diluent and curing agent evenly, the mixing conditions are oil bath temperature 60°C, stirring speed 800 rpm, time 40min. Then ...

Embodiment 3

[0032] The main resin adopts sulfur-containing glycidyl ether (DGEBS) and fluorine-containing glycidyl ester (BGTF), the diluent adopts glycidyl neodecanoate type epoxy resin (H11), and the curing agent adopts aminocyclotripolyphosphazene HANPCP and three The complex of boron fluoride-benzylamine Anchor1040, the nano-filler uses carbon nanotubes, and the carbon fiber uses T700 from Toray Corporation of Japan. The mass ratio of main resin, diluent, curing agent and nano filler is 80:20:45:2. The preparation process is as follows: according to the formula, first mix aminocyclotripolyphosphazene HANPCP and boron trifluoride-benzylamine Anchor1040 at 60°C to obtain a curing agent compound, and mix the main resin, nano Filler and diluent are mixed and ultrasonically treated, ultrasonic treatment conditions: power 60Kw, temperature 30°C, time 2h. Then mix the main resin, nano filler, diluent and curing agent evenly, the mixing conditions are oil bath temperature 60°C, stirring spee...

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Abstract

The invention discloses a resin matrix applicable to microwave curing and a preparation method of the resin matrix, and belongs to the field of preparation of composite materials. Polar mulfunctional high-performance epoxy resin is used as main body resin; an active diluent is added to adjust the viscosity of a resin system so as to enable the resin to adapt to liquid forming processes such as winding; a novel compound curing agent is selected to adjust the curing activity of the resin matrix, and nanofiller is added to improve the microwave responsiveness of the resin matrix and realize the mechanical property, the heat resistance and the size stability of the resin matrix; by the adjustment of the structures and the proportions of components such as the main body resin, the curing agent, the diluent and the nanofiller, the resin system which is proper in microwave responsiveness and curing activity, excellent in comprehensive mechanical property, high in heat resistance, high in size stability and low in viscosity and is applicable to microwave curing is developed, has a great guidance significance for preparation of a fiber composite material, and can be widely applied to the field of aerospaces and the like.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and mainly relates to a microwave-curable resin matrix and a preparation method thereof. Background technique [0002] Due to the characteristics of light weight, high strength, high temperature resistance, corrosion resistance, and excellent thermodynamic properties, resin-based composite materials have been more and more widely developed and applied in aerospace, medical, electronics, machinery and other fields. At present, resin-based composite materials are mainly cured by traditional thermal curing methods, which have disadvantages such as long curing cycle, high energy consumption, and low curing efficiency. The degree of curing in the direction is different, which makes it difficult for the resin to cure uniformly, and it is easy to generate large internal stress. In addition, the traditional thermal curing method is also easy to cause deformation and even degradation of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/06C08K7/24C08K3/34C08K3/04
CPCC08L63/00C08L2201/08C08L2205/025C08L2205/03C08K7/06C08K3/346C08K7/24C08K3/04
Inventor 贾晓龙范晋锋杨文刚杨小平
Owner BEIJING UNIV OF CHEM TECH
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