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Polyaryl ether nitrile resin, polyaryl ether nitrile film and preparation method thereof

A polyarylene ether nitrile and resin technology, applied in the field of polymer materials, can solve the problems of destroying the flexibility of polyarylene ether nitrile, complicated heating process, high crosslinking density, etc. Effect

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

AI Technical Summary

Problems solved by technology

[0004] However, the polyarylether nitrile with phthalonitrile structure in the side chain will form a complex cross network structure, thereby destroying the good flexibility of polyarylether nitrile itself. After thermal crosslinking, the crosslinking density is too large and uncontrollable. Therefore, the film obtained after crosslinking is a brittle material and can only be used for basic research
In addition, in the prior art, the solution casting method is usually used to prepare thermoplastic material films, which has some unavoidable disadvantages: a large amount of solvent is consumed, the heating process is complicated, and the processing time is too long.

Method used

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  • Polyaryl ether nitrile resin, polyaryl ether nitrile film and preparation method thereof
  • Polyaryl ether nitrile resin, polyaryl ether nitrile film and preparation method thereof
  • Polyaryl ether nitrile resin, polyaryl ether nitrile film and preparation method thereof

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preparation example Construction

[0042] The second technical problem to be solved in the present invention is to provide the preparation method of above-mentioned polyarylether nitrile resin, comprising the following steps:

[0043] a, Weigh raw materials according to molar ratio: hydroquinone: biphenol: dichlorobenzonitrile: catalyst: 4-nitrophthalonitrile: anhydrous strong polar solvent: dehydrating agent=1~4 : 7~9: 9~11: 11~13: 1~3: 14~16: 4~6;

[0044] b. Dissolve hydroquinone, biphenol, dichlorobenzonitrile and catalyst in anhydrous strong polar solvent and dehydrating agent and react at 140-160°C for 1-3 hours, then remove dehydrating agent and water Reaction at 200-220°C for 3-5 hours;

[0045] c. Cool the product obtained in step b to 80-120° C., add 4-nitrophthalonitrile, react at this temperature for 4-6 hours, wash and dry to obtain polyarylether nitrile resin.

[0046] The equation for the above reaction is:

[0047]

[0048] The 3rd technical problem to be solved by this invention is to pro...

Embodiment 1

[0063] The synthesis of embodiment 1 polyarylether nitrile resin, the preparation and performance of polyarylether nitrile film

[0064] (1) Synthesis of polyarylether nitrile resin

[0065] Raw material consumption is (by mol):

[0066]

[0067]

[0068] Add hydroquinone, biphenol, dichlorobenzonitrile, potassium carbonate, N-methylpyrrolidone and toluene into the three-necked flask according to the above molar ratio, raise the temperature to 140-160°C for 2 hours, and then remove the toluene With water, the temperature is raised to 200-220°C to react for 4 hours, then the temperature is lowered to 80-90°C, and 4-nitrophthalonitrile is added to react for 6 hours. Pour the reaction mixture into 0.1M / L HCL solution for washing, filter, and wash the solid obtained several times with ethanol, and then place it in an oven for 24 hours at 100°C to obtain a polyarylether nitrile resin with a curing temperature of 305°C .

[0069] (2) Preparation of polyarylether nitrile fil...

Embodiment 2

[0071] The synthesis of embodiment 2 polyarylether nitrile resin, the preparation and performance of polyarylether nitrile film

[0072] According to the method and steps of Example 1, the molar ratio of hydroquinone and biphenol was changed to 1.05:9; the physical properties of the polyarylether nitrile film obtained are shown in Table 1.

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Abstract

The invention belongs to the field of high polymer materials, and particularly relates to polyaryl ether nitrile resin, a polyaryl ether nitrile film and a preparation method thereof. The structure of the polyaryl ether nitrile resin is represented by formula I: n=40-80, m=10-20. Cross-linking groups are arranged at the chain end of the polyaryl ether nitrile resin, and the polyaryl ether nitrile resin has good curing reaction activity and can be used for preparing a corresponding polyaryl ether nitrile film. The polyaryl ether nitrile film is good in heat-resistant performance, the glass-transition temperature is 200 DEG C to 240 DEG C, the initial decomposition temperature is 560 DEG C to 580 DEG C, and carbon residue rate of thermal decomposition in nitrogen atmosphere at 800 DEG C is more than 69%. The polyaryl ether nitrile film is good in toughness, the elongation at break of the polyaryl ether nitrile film ranges from 8% to 12%, tensile strength is excellent, the tensile strength of the polyaryl ether nitrile film ranges from 80 MPa to 100 MPa.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to polyarylether nitrile resins, polyarylether nitrile films and preparation methods thereof. Background technique [0002] Polyarylether nitrile (PEN) is one of the representative polyarylether polymers. It is a semi-crystalline polymer with a relatively regular structure, and its molecular main chain and side chain contain rigid benzene rings and The nitrile group makes polyarylether nitrile have high temperature resistance and thermal stability, and at the same time, the ether bond on the main chain makes it have a certain degree of flexibility, so its glass transition temperature (Tg) is higher than that of polyether ketone (PEK) Low, excellent performance makes it have broad prospects in special engineering materials. [0003] Polyarylether nitrile has a special molecular structure. Due to the introduction of strong polar nitrile side groups, the dipole-dipo...

Claims

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Application Information

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IPC IPC(8): C08G65/40C08L71/10
Inventor 刘孝波邹延珂郭恒杨旭林杨建
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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