Bisphthalonitrile resin fiber enhanced material containing triaryl symtriazine structure and preparation method thereof
A technology of bis-phthalonitrile resin and phthalonitrile resin, which is applied in the field of bis-phthalonitrile resin reinforced fiber material and its preparation, and can solve the problem of low heat resistance of resin, not involving preparation and use, etc. problem, to achieve the effect of improving heat resistance, strength improvement, and high heat resistance level
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Embodiment 1
[0044] The preparation of the phthalonitrile resin containing triaryl-s-triazine structure shown in embodiment 1 formula a (referred to as resin A)
[0045]
[0046] Among them, the Ar3 group selects (q) structure, R1~R6 groups are all -H, a=1, b=0, the molecular weight of the polymer is 1820 as detected by GPC, and the number n of repeating structural units is 2.4.
[0047] The preparation method is as follows:
[0048] (1) Add 47.6492g of 4-(4-hydroxyphenyl)-2,3-phthalazin-1-one, 34.5108 g 2,4-bis(4-fluorophenyl)-6-phenyl-1,3,5-triazine, 35.8572g anhydrous potassium carbonate, 100mL N-methylpyrrolidone and 50mL toluene; reflux at 150℃ with water After 3 hours, toluene was distilled off; continue to heat up to 190°C and react for 7 hours. During the reaction, add solvent according to the viscosity of the reaction system until the viscosity of the reaction system no longer increases. The amount of added solvent is 3 mL; cool to room temperature to obtain The reaction solu...
Embodiment 2
[0053] The preparation of the phthalonitrile resin containing triaryl-s-triazine structure shown in embodiment 2 formula b (abbreviated as resin B)
[0054]
[0055] Among them, R1~R3 groups are all -H, a=1, b=0, Ar3 group adopts (n) structure, the molecular weight of the polymer is 1297 as detected by GPC, and the number n of repeating structural units is 1.6.
[0056] The preparation method is as follows:
[0057] (1) Add 1.4896g of biphenyldiphenol and 1.3804g of 2,4-bis(4-fluorophenyl)-6-phenyl -1,3,5-Triazine, 1.3456g anhydrous potassium carbonate, 5mL sulfolane and 20mL toluene; after refluxing with water at 150°C for 3 hours, distill the toluene; Additional solvent was added until the viscosity of the reaction system no longer increased, and the amount of added solvent was 3 mL; cooled to room temperature to obtain a reaction solution of an oxophenoxide-capped intermediate.
[0058] (2) Add 1.1620 g of 4-nitrophthalonitrile to the reaction solution of the phenoxy s...
Embodiment 3
[0063] The preparation of the phthalonitrile resin containing triaryl-s-triazine structure shown in embodiment 3 formula c (abbreviated as resin C)
[0064] Wherein, R1~R3 groups are all -H, a=0.5, b=0.5, Ar3 group adopts (n) structure, Ar2 adopts (l) structure, and Ar1 adopts (a) structure. The molecular weight of the polymer was detected by GPC as 1980, and the number of repeating structural units n was 4.4.
[0065] The preparation method is as follows:
[0066] (1) Add 1.1173g of biphenol, 0.4404g of hydroquinone, 0.5564g of 2,6-difluorobenzonitrile and 1.3804 g 2,4-bis(4-fluorophenyl)-6-phenyl-1,3,5-triazine, 1.9308g anhydrous potassium carbonate, 10mL dimethyl sulfoxide and 20mL toluene; reflux at 150°C with water After 3 hours, toluene was distilled off; continue to heat up to 190°C and react for 7 hours. During the reaction, add solvent according to the viscosity of the reaction system until the viscosity of the reaction system no longer increases. The amount of ad...
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