Phthalonitrile-terminated polyphenyl ether and preparation method and application thereof
A technology of phthalonitrile and double-terminated hydroxyl polyphenylene ether, which is applied in the field of polyphenylene ether modified materials and its preparation, can solve the problems of low curing crosslinking density, low activity of functional groups, limited dosing amount, etc.
Inactive Publication Date: 2021-03-26
SICHUAN UNIV
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Abstract
The invention discloses phthalonitrile-terminated polyphenyl ether and a preparation method and application thereof. The phthalonitrile-terminated polyphenyl ether has a structural formula shown in the specification. The preparation method comprises the following steps: after washing a double-hydroxyl-terminated polyphenyl ether solution by adopting an alkaline aqueous solution, carrying out end-capping reaction on phthalonitrile and polyphenyl ether terminal hydroxyl, and separating and purifying to obtain the phthalonitrile-terminated polyphenyl ether. According to the preparation method, phthalonitrile reacts with terminal hydroxyl of polyphenyl ether, so that the molecular weight of polyphenyl ether can be reduced, the melt viscosity of polyphenyl ether is reduced, processing is facilitated, and meanwhile, the mechanical strength, solvent resistance, flame retardance and the like of polyphenyl ether are improved through a cyano cross-linking reaction; and the application of the resin in high-performance copper-clad plate matrix resin is further expanded.
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Composite materialMelt viscosity +7
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