A fire-proof and breakdown-resistant film capacitor
A thin-film capacitor and breakdown-resistant technology, which is applied in the direction of thin-film/thick-film capacitors, laminated capacitors, fixed capacitor dielectrics, etc., can solve the problems of limited application range and poor voltage breakdown resistance, and achieve enhanced breakdown resistance. Effect of improving bond energy and improving high temperature resistance
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[0018] Example 1
[0019] A fire-resistant and breakdown-resistant film capacitor uses a composite film made of macromolecular copolymer-modified polypropylene masterbatch as the dielectric of the film capacitor.
[0020] Further, the preparation method of the macromolecular copolymer modified polypropylene master batch is:
[0021] Weigh in parts by weight 120 parts of trans-2-butene, 30 parts of acrylonitrile, 120 parts of diethyl fumarate, 1250 parts of deionized water, 10 parts of emulsifier, 5 parts of nano-bentonite dispersion, and 0.03 parts of activator Add 1.2 parts of initiator to the reaction kettle, stir at 1500r / min for 2 hours, then continue to feed nitrogen gas for 20 minutes, then heat to 35 ° C, keep the temperature for 10 minutes, then add 1.2 parts of initiator, after stirring evenly, keep in a 35 ° C water bath for insulation Under the reaction for 10 hours, then discharging, purifying the reaction product, drying to constant weight, that is, the macromole...
Example Embodiment
[0031] Example 2
[0032] A fire-resistant and breakdown-resistant film capacitor uses a composite film made of macromolecular copolymer-modified polypropylene masterbatch as the dielectric of the film capacitor.
[0033] Further, the preparation method of the macromolecular copolymer modified polypropylene master batch is:
[0034] Weigh 150 parts of trans-2-butene, 50 parts of acrylonitrile, 160 parts of diethyl fumarate, 1300 parts of deionized water, 12 parts of emulsifier, 7 parts of nano-bentonite dispersion, and 0.08 parts of activator by weight. Add 1.5 parts of initiator to the reaction kettle, stir at 1500r / min for 3 hours, then continue to feed nitrogen gas for 20 minutes, then heat to 35 °C, keep the temperature for 10 minutes, then add 1.5 parts of initiator, stir evenly, and keep in a 35 °C water bath for insulation Under the reaction for 12 hours, then discharging, purifying the reaction product, drying to constant weight, that is, the macromolecular copolymer;...
Example Embodiment
[0044] Example 3
[0045] A fire-resistant and breakdown-resistant film capacitor uses a composite film made of macromolecular copolymer-modified polypropylene masterbatch as the dielectric of the film capacitor.
[0046] Further, the preparation method of the macromolecular copolymer modified polypropylene master batch is:
[0047] Weigh in parts by weight 130 parts of trans-2-butene, 40 parts of acrylonitrile, 150 parts of diethyl fumarate, 1270 parts of deionized water, 11 parts of emulsifier, 6 parts of nano-bentonite dispersion, and 0.05 parts of activator Add 1.4 parts of initiator to the reaction kettle, stir at 1500 r / min for 2.3 hours, then continue to feed nitrogen gas for 20 minutes, then heat to 35 °C, keep the temperature for 10 minutes, then add 1.4 parts of initiator, stir evenly, and keep in a 35 °C water bath for insulation Under the reaction for 11 hours, then discharging, purifying the reaction product, drying to constant weight, that is, the macromolecular...
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