Cyanate ester modified bismaleimide-propargyl phenolic resin based wave-transparent composite material and preparation method thereof
A technology of propargyl phenolic resin and cyanate resin, applied in the field of wave-transmitting composite materials, can solve the problems of high curing shrinkage, low shear strength, high dielectric constant and dielectric loss, and achieve good mechanical properties, The effect of excellent dielectric properties and good processability
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Embodiment 1
[0028] Weigh 200g of bis-propargyl phenolic resin (purchased from Shandong Shengquan New Material Co., Ltd., the same below), put it into a three-neck flask, heat it to 140°C with an oil bath, add 20g of bisphenol A cyanate Resin (purchased from Ningbo Materials Institute, the same below), stirring until the material turns into a transparent brown glue, and after continuing to keep warm for 10 minutes, the material is quickly poured out and cooled to obtain the cyanate modified bis-propargyl phenolic resin .
[0029] Weigh 200g of the above-mentioned cyanate-modified bis-propargyl phenolic resin and add it to 200g of acetone, and stir for 1 hour at room temperature to completely dissolve the cyanate-modified bis-propargyl phenolic resin. The used glue of embodiment. Then, the glue solution was evenly coated on 200 g of plain quartz fiber fabric (purchased from Jingzhou Feilihua Quartz Glass Co., Ltd., the same below), and dried at 80° C. for 30 minutes to obtain a prepreg.
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Embodiment 2
[0033] Weigh 200g of double horse-propargyl phenolic resin, put it into a three-necked flask, heat it to 140°C with an oil bath, add 40g of cyanate resin, stir until the material turns into a transparent brown glue, continue to keep warm for 10 minutes, and quickly put The material is poured out and cooled to obtain the cyanate modified bis-propargyl phenolic resin.
[0034] Weigh 200g of the above-mentioned cyanate-modified bis-propargyl phenolic resin and add it to 200g of acetone, and stir for 1 hour at room temperature to completely dissolve the cyanate-modified bis-propargyl phenolic resin. The used glue of embodiment. Then, the glue solution was uniformly coated on 200 g of plain quartz fiber fabric, and dried at 90° C. for 20 minutes to obtain a prepreg.
[0035] Put the prepreg into an autoclave for curing. The curing conditions are: constant temperature at 180°C for 3 hours, constant temperature at 200°C for 2 hours, constant temperature at 230°C for 2 hours, and con...
Embodiment 3
[0038] Weigh 200g of double horse-propargyl phenolic resin, put it into a three-necked flask, heat it to 140°C with an oil bath, add 60g of cyanate resin, stir until the material turns into a transparent brown glue, continue to keep warm for 10 minutes, and quickly put The resin was poured out and cooled to obtain the cyanate modified bis-propargyl phenolic resin.
[0039] Weigh 200g of cyanate-modified bis-propargyl phenolic resin and add it to 200g of acetone, and stir for 1 hour at room temperature to completely dissolve the cyanate-modified bis-propargyl phenolic resin, which is used in this example. Glue. Then, the glue solution was uniformly coated on 200 g of plain quartz fiber fabric, and dried at 100° C. for 10 minutes to obtain a prepreg.
[0040] Put the prepreg into an autoclave for curing. The curing conditions are: constant temperature at 180°C for 3 hours, constant temperature at 200°C for 2 hours, constant temperature at 230°C for 2 hours, and constant tempera...
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Abstract
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