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Bi-phthalonitrile prepolymer as well as preparation method and application thereof, bi-phthalonitrile prepolymer/epoxy resin copolymer and preparation method thereof as well as bi-phthalonitrile prepolymer/epoxy resin cured material

A technology of curing diphthalonitrile and epoxy resin, applied in the direction of organic chemistry, etc., to achieve the effect of easy realization, easy control and good flame retardant performance

Active Publication Date: 2012-06-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is an urgent need to find a new flame retardant. After copolymerization with epoxy resin, it not only has good flame retardant performance, but also can overcome the defects of burning and releasing toxic substances that cause damage to the environment and being limited by high temperature use. Mechanical properties of polymer systems

Method used

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  • Bi-phthalonitrile prepolymer as well as preparation method and application thereof, bi-phthalonitrile prepolymer/epoxy resin copolymer and preparation method thereof as well as bi-phthalonitrile prepolymer/epoxy resin cured material
  • Bi-phthalonitrile prepolymer as well as preparation method and application thereof, bi-phthalonitrile prepolymer/epoxy resin copolymer and preparation method thereof as well as bi-phthalonitrile prepolymer/epoxy resin cured material
  • Bi-phthalonitrile prepolymer as well as preparation method and application thereof, bi-phthalonitrile prepolymer/epoxy resin copolymer and preparation method thereof as well as bi-phthalonitrile prepolymer/epoxy resin cured material

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Experimental program
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Effect test

Embodiment 1

[0042] Embodiment 1 Preparation of bisphthalonitrile prepolymer / epoxy resin cured product

[0043] (1) melting the bis-phthalonitrile monomer at 190° C., and prepolymerizing for 15 minutes to obtain a bis-phthalonitrile prepolymer;

[0044] (2) Mix 4,4'-diaminodiphenylsulfone and epoxy resin E-44, and then melt blend with the bisphthalonitrile prepolymer prepared in step (1) at 190-200°C Make bis-phthalonitrile prepolymer / epoxy resin copolymer, wherein the weight ratio of bis-phthalonitrile prepolymer and epoxy resin is as shown in Table 1, 4,4'-diaminodiphenyl sulfone The consumption of the epoxy resin is 27wt%.

[0045] (3) The bisphthalonitrile prepolymer / epoxy resin copolymer obtained in step (2) is poured and heat-treated to obtain a self-flame-retardant bisphthalonitrile prepolymer / epoxy resin cured product Wherein, the temperature of heat treatment is 190 ℃ / 4h, 210 ℃ / 2h, 230 ℃ / 2h, 250 ℃ / 2h, 270 ℃ / 2h; The flammability is shown in Table 1.

Embodiment 2-5

[0046] Embodiment 2-5 Preparation of bisphthalonitrile prepolymer / epoxy resin cured product

[0047] The preparation method of embodiment 2-5 is the same as that of embodiment 1, and the ratio of raw materials is different from that of embodiment 1, wherein the weight ratio of bisphthalonitrile prepolymer and epoxy resin is as shown in table 1, and the obtained bisphthalonitrile The flame retardant performance of the prepolymer / epoxy resin cured product is shown in Table 1.

[0048] In the present invention, the UL-94 vertical combustion test adopts the GB / T 2408-2008 standard, and the sample size is 125×13.0×3.0mm 3 ; The oxygen index test adopts the GB / T 2406-93 standard, and the sample size is 130×6.5×3mm 3 .

[0049] Table 1 Raw material ratio and properties of bisphthalonitrile prepolymer / epoxy resin cured product

[0050]

[0051] In Table 1, NR stands for no grade, which is a flammable material.

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Abstract

The invention belongs to the technical field of a high polymer material, and in particular relates to a bi-phthalonitrile prepolymer as well as a preparation method and application thereof, a bi-phthalonitrile prepolymer / epoxy resin copolymer and a preparation method thereof as well as a bi-phthalonitrile prepolymer / epoxy resin cured material. According to the invention, the structural formula ofthe bi-phthalonitrile prepolymer is shown in a formula I described in the specification; and the bi-phthalonitrile prepolymer can be used as a high polymer material flame retardant and is copolymerized with epoxy resin so as to prepare the bi-phthalonitrile prepolymer / epoxy resin copolymer and the bi-phthalonitrile prepolymer / epoxy resin cured material, wherein the flame retardant property of theobtained bi-phthalonitrile prepolymer / epoxy resin cured material is greatly improved, and simultaneously, the good heat resistance and physical properties such as high strength and high modulus of the obtained bi-phthalonitrile prepolymer / epoxy resin cured material are also ensured, namely, the comprehensive properties of the obtained bi-phthalonitrile prepolymer / epoxy resin cured material are excellent.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a bis-phthalonitrile prepolymer, a bis-phthalonitrile prepolymer / epoxy resin copolymer, a cured product and a preparation method and application thereof. Background technique [0002] Epoxy resin has many excellent properties, such as chemical corrosion resistance, wear resistance, electrical insulation and excellent adhesion, etc., and is widely used in aerospace, weapons, shipbuilding and other fields. However, ordinary epoxy resin has low toughness and poor flame retardancy (the limiting oxygen index of ordinary epoxy resin is only 19.8%), and it is a flammable material. Therefore, the development of epoxy resins with good flame retardancy and high thermal stability has become an urgent problem in the field of epoxy resins at home and abroad. Flame retardant epoxy resins are used in industries such as electronics (printed circuit boards and semiconductor...

Claims

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Application Information

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IPC IPC(8): C08G73/06C07D487/22C07D519/00C08G59/40C08G59/56C08L63/00C08L79/04
Inventor 刘孝波赵鑫郭恒魏俊基徐明珍
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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