High-temperature-resistant and flame-retardant tetrafunctional epoxy resin with diazaphthone structure and preparation method of tetrafunctional epoxy resin

A phthalazinone and four-functionality technology, which is applied in the field of polymer science, can solve the problem of decreased heat resistance, lower glass transition temperature, and improvement of the mechanical properties and heat resistance of cured products of tetrafunctional epoxy resins Can not take into account other issues, to achieve the effect of high bending strength, high impact strength and heat resistance, good mechanical strength and flame retardancy

Active Publication Date: 2019-06-28
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Through literature review, it is found that the improvement of the mechanical properties and heat resistance of the modified tetrafunctional epoxy resin cured product cannot be taken into account. For example, as shown in Table 1, the tetrafunctional epoxy resin cured product with high storage modulus, Its glass transition temperature is reduced, that is, the heat resistance performance is reduced

Method used

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  • High-temperature-resistant and flame-retardant tetrafunctional epoxy resin with diazaphthone structure and preparation method of tetrafunctional epoxy resin
  • High-temperature-resistant and flame-retardant tetrafunctional epoxy resin with diazaphthone structure and preparation method of tetrafunctional epoxy resin
  • High-temperature-resistant and flame-retardant tetrafunctional epoxy resin with diazaphthone structure and preparation method of tetrafunctional epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Mix 1g TEPZ and 10g TGDDM resin, preheat at 110°C and stir mechanically until it becomes light yellow and transparent, then add 4.4g 4,4'-aminodiphenylmethane curing agent, when the mixed system becomes transparent again, put It was placed in a preheated vacuum oven for degassing for 45 minutes. Finally, inject the homogeneously mixed melt into the mold, and solidify in a blast oven according to the temperature program of 100°C / 2h, 130°C / 2h, 150°C / 2h, and 180°C / 2h.

Embodiment 2

[0037] Mix 2g of TEPZ and 10g of TGDDM resin, preheat at 110°C and mechanically stir until it becomes light yellow and transparent, then add 4.8g of 4,4'-aminodiphenyl ether curing agent, when the mixed system becomes transparent again, put It was placed in a preheated vacuum oven for degassing for 45 minutes. Finally, inject the homogeneously mixed melt into the mold, and solidify in a blast oven according to the temperature program of 120°C / 2h, 150°C / 2h, 180°C / 2h, 200°C / 1h.

Embodiment 3

[0039] Mix 3g of TEPZ and 10g of TGDDM resin, preheat at 110°C and mechanically stir until it appears light yellow and transparent, then add 5.2g of 4,4'-aminodiphenyl sulfone curing agent, when the mixed system becomes transparent again, put It was placed in a preheated vacuum oven for degassing for 45 minutes. Finally, inject the homogeneously mixed melt into the mold, and solidify in a blast oven according to the temperature program of 130°C / 2h, 150°C / 2h, 180°C / 2h, 200°C / 1h, 230°C / 2h.

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Abstract

The invention belongs to the technical field of macromolecule science and provides high-temperature-resistant and flame-retardant tetrafunctional epoxy resin with a diazaphthone structure and a preparation method of the tetrafunctional epoxy resin. The tetrafunctional epoxy resin with the diazaphthone structure is synthesized by virtue of a one-pot two-step method, and an optimized reaction condition is determined through the inspection of the temperature, the time and the material ratio. The synthetic reaction comprises the steps of with diamine monomer with the diazaphthone structure and epoxy chloropropane as the materials, carrying out first-step ring-opening reaction; and dropwise adding a sodium hydroxide solution for ring-closure reaction, and finally, carrying out toluene extraction and washing, so as to obtain a target monomer. Tetraglycidyl-4,4'-diaminodiphenylmethane epoxy resin modified with the tetrafunctional epoxy resin with the diazaphthone structure has very good formation machinability, can be taken as a resin matrix and can be used for preparing high-temperature-resistant and high-performance fiber-reinforced resin-base composite material by virtue of the processes of lamination, mold pressing and RTM.

Description

technical field [0001] The invention belongs to the field of polymer science and technology, and relates to a high-temperature-resistant, flame-retardant tetrafunctional epoxy resin containing phthalazinone structure and a preparation method thereof. Background technique [0002] In recent years, the energy crisis has prompted all kinds of aircraft, vehicles, ships, etc. to take energy saving and emission reduction as the first goal, and at the same time to achieve the use indicators of high speed, light weight, and long range. High-performance epoxy-based resin composite materials with advantages such as area integral molding have become indispensable strategic new materials. This type of material can effectively reduce the structural weight of high-speed aircraft, reduce fuel consumption, increase the maneuverability and payload of the aircraft, and increase the range. To the main load-bearing structure development. [0003] Since the early 1970s, high-temperature-resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08G59/32
Inventor 蹇锡高王锦艳翁志焕刘程宗立率李楠
Owner DALIAN UNIV OF TECH
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