Modified cyanate ester resin and preparation method thereof
A cyanate ester resin and cyanate ester technology are applied in the field of modified cyanate ester resin and its preparation, which can solve the problems of not being able to simultaneously reduce the curing temperature of the cyanate ester resin, improve thermal stability, etc. The effect of curing temperature and simple process
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Embodiment 6
[0037] In Example 6, the cyanate ester raw material selected is bisphenol E-type cyanate ester monomer, and the product model is CE09MO, which is purchased from Yangzhou Tianqi New Materials Co., Ltd.
[0038] In the data test part, the curing reaction temperature of the modified cyanate ester resin can be tested with a differential scanning calorimeter (DSC), and the starting temperature of the curing reaction (T i ), and the curing reaction peak temperature (T p ), the end temperature of curing reaction (T f ) and the curing reaction exothermic enthalpy (ΔH). The curing process of the modified cyanate ester resin can be determined with reference to the results of the resin DSC test. The thermal stability of the thermally cured modified cyanate ester resin can be tested with a thermogravimetric analyzer (TGA) in a nitrogen atmosphere, and 5% can be obtained. Thermogravimetric temperature (T d5 ) and the residual rate at 800°C (Y r800℃ ) to reflect the thermal stability of...
Embodiment 1
[0043] Preparation of Silicon-Containing Aryne Resin Modified Cyanate Resin (BA / PSA-1)
[0044] 100g of tetrahydrofuran was weighed into a 500mL three-necked round-bottomed flask with mechanical stirring, 90g of bisphenol A cyanate monomer (BADCy) and 10g of silicon-containing arylyne resin PSA-E were added under stirring, and the solution was dissolved after stirring at room temperature for 30min. The uniform brown-yellow solution was distilled under reduced pressure at -0.09~-0.1MPa, the tetrahydrofuran solvent was removed at 50°C, the melt was poured out while hot, and after cooling, the cyanate ester resin (BA / PSA-1), carry out DSC analysis, the results are shown in the attached figure 1 And Table 1, it can be seen that the initial curing temperature of the modified cyanate resin BA / PSA-1 decreased by 73°C. The modified cyanate resin was cured at 170°C / 2h and 210°C / 2h, and then post-cured at 250°C / 4h (ie, three-stage temperature-programmed) to obtain a cured product of t...
Embodiment 2
[0050] Preparation of Silicon-Containing Aryne-Modified Cyanate Resin (BA / PSA-2)
[0051] 100g of tetrahydrofuran was weighed into a 500mL three-necked round-bottomed flask with mechanical stirring, 80g of bisphenol A cyanate monomer (BADCy) and 20g of silicon-containing arylalkyne resin PSA-E were added under stirring, and the solution was dissolved after stirring at room temperature for 60min. The uniform brown-yellow solution was distilled under reduced pressure at -0.09~-0.1MPa, the tetrahydrofuran solvent was removed at 50°C, the melt was poured out while hot, and after cooling, the cyanate ester resin (BA / PSA-2), carry out DSC analysis, the results are shown in the attached figure 1 And Table 1, it can be seen that the initial curing temperature of the modified cyanate resin BA / PSA-2 decreased by 95°C. The modified cyanate ester resin was cured at 170°C / 2h and 210°C / 2h, and then cured at 250°C / 4h to obtain a cured product of the modified cyanate ester. The TGA test was...
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