Fluorine-containing epoxy resin composite material and applications thereof
A technology of epoxy resin and composite materials, which is applied in the field of composite materials, can solve the problems of limited application, low polarity of resin structure, poor dielectric properties of epoxy resin, etc., and achieve excellent dielectric properties, low signal loss, good durability thermal effect
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[0041] The preparation method of above-mentioned fluorine-containing epoxy resin is as follows:
[0042] The molar ratio of hexafluorobisphenol A to epichlorohydrin is 1:1 to 1:10, the amount of phase transfer catalyst added is 0.5 to 2% of the mole of hexafluorobisphenol A, bisphenol AF, epichlorohydrin Put the phase transfer catalyst into the reaction container, mix and stir, and react in the temperature range of 65-75° C. for 65-70 hours to obtain the crude product of fluorine-containing epoxy resin (DGEBF).
[0043] Add hot distilled water (water temperature is 20°C to 80°C) to the crude product of DGEBF for washing, that is, washing with water, extracting and stratifying, removing the phase transfer catalyst, and then distilling under reduced pressure in a vacuum of 400Pa to 1000Pa to remove the extra amount of epichlorohydrin. Solvent, and finally add a sufficient amount of desiccant to obtain fluorine-containing epoxy resin after drying.
[0044] Described phase transf...
Embodiment 1
[0080] This embodiment provides a fluorine-containing epoxy resin composite material, a prepreg, a laminate and a metal-clad copper foil laminate.
[0081] (1) Preparation of fluorine-containing epoxy resin: Take 7.6 parts of hexafluorobisphenol A, 42.3 parts of epichlorohydrin, and 0.1 part of benzyltrimethylammonium chloride. Wherein, the molar ratio of hexafluorobisphenol A to epichlorohydrin is 1:10, and the added amount of benzyltrimethylammonium chloride is 1% of the hexafluorobisphenol A mole.
[0082] Mix the three raw materials, stir, raise the temperature to 65-75° C., and react in this temperature range for 65-70 hours to obtain a crude product of fluorine-containing epoxy resin (DGEBF). Add hot distilled water with a water temperature of 20°C to 80°C to the crude product of DGEBF for water washing, extraction and stratification, remove the phase transfer catalyst, then distill under reduced pressure to remove the extra solvent of epichlorohydrin, and finally add a ...
Embodiment 2
[0088] This embodiment provides a fluorine-containing epoxy resin composite material, a prepreg, a laminate and a metal-clad copper foil laminate.
[0089] (1) The fluorine-containing epoxy resin obtained in Example 1 is directly used as the fluorine-containing epoxy resin of this embodiment.
[0090] (2) Preparation of fluorine-containing epoxy resin composite material: Mix cyclohexanone and propylene glycol methyl ether at a volume ratio of 1:1 to obtain a mixed solvent, stir, and add 40 parts of fluorine-containing epoxy resin and 40 parts of DCPD DCPD to the mixed solvent Epoxy resin, 65 parts of anhydride curing agent, 0.8 part of 2-methylimidazole accelerator and 150 parts of silicon micropowder were stirred evenly to prepare a glue solution, and fluorine-containing epoxy resin composite material 2 was obtained.
[0091] (3) Preparation of prepreg: After the above-mentioned fluorine-containing epoxy resin composite material 2 is stirred evenly, 2116 glass fiber cloth (ba...
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