Method for measuring content of cyanate ester monomers
A technology of monomer content and determination method, which is applied in measurement devices, instruments, scientific instruments, etc., to achieve the effects of high precision, avoidance of interference, and easy operation.
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Embodiment 1
[0027] Embodiment 1 (taking the content measurement of cyanate ester monomer in the bisphenol A type cyanate ester prepolymer as an example)
[0028] 1. Desolventization of bisphenol A cyanate prepolymer
[0029] Spread the bisphenol A cyanate prepolymer thinly on a clean tinfoil paper, and then place it in a vacuum drying oven for drying. The drying temperature can be 20-40°C, and the drying time can be 30-120 minutes. In this embodiment, the drying temperature is set at 30° C., and the drying time is 90 minutes.
[0030] 2. Solvent handling
[0031] The solvent is ultrasonically treated, the temperature of the treatment can be 10-30°C, and the time can be 10-20 minutes. The solvent can be selected from one of toluene and tetrahydrofuran. In this embodiment, the ultrasonic treatment temperature is set at 25°C. The time was 15 minutes and the solvent was tetrahydrofuran (chromatographically pure grade).
[0032] 3. Make the standard curve of cyanate monomer standard solutio...
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