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Self-catalyzed resin monomer and synthesis method thereof

An autocatalytic resin and resin monomer technology, applied in the direction of organic chemistry, etc., can solve the problems of insufficient thermal stability of small molecular organic compounds, affecting the performance of composite materials, and the formation of pores in the cured product, achieving excellent thermal stability and low processing temperature. , the effect of excellent curing performance

Inactive Publication Date: 2016-01-06
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the method of adding a curing catalyst, specifically, adding small molecular organics and Lewis acid inorganic substances to reduce the curing temperature and increase the curing rate, but the thermal stability of the small molecular organics is not enough, and with the increase of the curing temperature, The decomposition of small molecules leads to defects such as holes in the cured product, which in turn affects the performance of the composite material; while inorganic catalysts have good thermal stability, but poor compatibility with organic resin monomers, resulting in poor catalytic effect

Method used

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  • Self-catalyzed resin monomer and synthesis method thereof
  • Self-catalyzed resin monomer and synthesis method thereof
  • Self-catalyzed resin monomer and synthesis method thereof

Examples

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Embodiment 1

[0034] A self-catalyzed resin monomer of the present invention, molecular structural formula is following formula (I):

[0035]

[0036] A kind of synthesis method of the self-catalyzed resin monomer of above-mentioned present embodiment, comprises the following steps:

[0037] (1) Preparation of 4-p-aminophenoxyphthalonitrile

[0038] (1.1) Add 0.025mol of p-aminophenol, 0.0375mol of anhydrous potassium carbonate, and 30ml of N,N-dimethylformamide DMF (solvent) into a dry reaction vessel (such as a three-necked flask), vacuumize and change the nitrogen, and oil bath Heat to 85°C for 1 hour.

[0039] (1.2) Add 0.02 mol of 4-nitrophthalonitrile to the above reaction vessel, reflux at 90° C. for 4 hours, and then cool to room temperature.

[0040] (1.3) Add deionized water to the product solution obtained in step 1.2, a large amount of precipitation occurs, filter with suction, wash repeatedly with deionized water saturated with sodium chloride, filter and dry. After eluti...

Embodiment 2

[0047] A self-catalyzed resin monomer of the present invention is the same as in Example 1.

[0048] A method for synthesizing the self-catalyzed resin monomer of this embodiment, the steps are basically the same as in Example 1, the only difference is that in step (1) and step (2), the solvents used are all dimethyl sulfoxide, 90 ° C The reaction time under reflux was 8 hours.

Embodiment 3

[0050] A self-catalyzed resin monomer of the present invention is the same as in Example 1.

[0051] A method for synthesizing the self-catalyzed resin monomer of the present embodiment, the steps are basically the same as in Example 1, the only difference being: in step (1) and step (2), the solvents used are all 1,4-dioxane Ring, reflux reaction time is 6 hours.

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Abstract

The invention discloses a self-catalyzed resin monomer and a synthesis method thereof. The molecular structural formula of the self-catalyzed resin monomer is shown in the specification. The synthesis method includes the steps that 1, with p-aminophenol and 4-nitrophthalonitrile as main raw materials, 4-p-amino-phenoxyphthalonitrile is prepared; 2, with 2,4-diamido-6-chloro-1,3,5-triazine and 4-p-amino-phenoxyphthalonitrile as main raw materials, a reaction is conducted at 80-150 DEG C, and then the self-catalyzed resin monomer is obtained. The self-catalyzed resin monomer has excellent heat stability and curing performance and a low processing temperature. The synthesis method is simple and easy to control, the reaction temperature is low, the reaction time is short, and the synthesis method is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of organic synthetic polymer materials, and relates to a self-catalyzed resin monomer and a synthesis method thereof, in particular to a self-catalyzed high-temperature-resistant nitrile-based resin monomer and a synthesis method thereof. Background technique [0002] Phthalonitrile resin is a new type of high temperature resistant thermosetting resin. Phthalonitrile resin has good thermal stability and mechanical properties of its cured product, as well as excellent thermal oxygen stability, flame retardancy and good moisture resistance. It is widely used in aerospace, shipbuilding, microelectronics and machinery manufacturing and other fields have more and more extensive applications. [0003] Typical phthalonitrile resins mainly include biphenyl type bisphthalonitrile resin and bisphenol A type bisphthalonitrile resin. However, the thermal curing reaction of this type of resin monomer is slow. Under the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/70
CPCC07D251/70
Inventor 盛丽萍邢素丽尹昌平肖加余曾竟成黄娅琳
Owner NAT UNIV OF DEFENSE TECH
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