Castable polyurethane elastomer electrolyte and preparation method thereof
A polyurethane elastomer, electrolyte technology, applied in the direction of electrolyte immobilization/gelation, circuits, electrical components, etc., can solve the problems of low ionic conductivity at room temperature, poor mechanical properties and thermal stability, etc., to achieve good physical properties, good Comprehensive performance, high-strength effect
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[0034] Example 1.
[0035] Weigh 35g PPG ( Mn = 2000), added to a three-necked flask equipped with a stirrer, a thermometer, a vacuum system and an electric heating mantle, and dehydrated in a vacuum at 105 °C for 1 h. The temperature was lowered to 35°C, 10 g of TDI was added, and after the natural heating of the system stopped, the temperature was slowly raised to 70°C, and the reaction was maintained for 1.5 h.
[0036] The reactant was lowered to room temperature, 11 g of LITFSI dissolved in 1 g of DMC was added, and the prepolymer was obtained after stirring for 90 min to obtain a fully uniform.
[0037] At room temperature, pre-dehydrated 1 g BDO, 2 g DOP and 1 g DBTL were added to the prepolymer prepared above, stirred rapidly for 3 min, and quickly put into a vacuum device for deaeration for 30 s.
[0038]The mixture was quickly poured into molds coated with release agent and cured for 7 days at room temperature.
Example Embodiment
[0039] Example 2.
[0040] Weigh 40g PPG ( Mn =1500), put it into a three-necked flask equipped with a stirrer, a thermometer, a vacuum system and an electric heating mantle, and dehydrated in a vacuum at 100 °C for 1 h. The temperature was lowered to 30°C, 10 g of MDI was added, and after the natural heating of the system stopped, the temperature was slowly raised to 70°C, and the reaction was maintained for 1 h.
[0041] The reactant was lowered to room temperature, 16 g of LITFSI dissolved in 2 g of DMC was added, and the prepolymer was obtained after stirring for 100 min to obtain a fully uniform.
[0042] At room temperature, pre-dehydrated 2 g BDO, 3 g DOP and 2 g DBTL were added to the prepolymer prepared above, stirred rapidly for 3 min, and quickly put into a vacuum device for deaeration for 50 s.
[0043] The mixture was quickly poured into molds coated with release agent and cured for 7 days at room temperature.
Example Embodiment
[0044] Example 3.
[0045] Weigh 45g PPG ( Mn = 3000), added to a three-necked flask equipped with a stirrer, a thermometer, a vacuum system and an electric heating mantle, and dehydrated in a vacuum at 110 °C for 1.5 h. The temperature was lowered to 40°C, 9 g of TDI was added, and after the natural heating of the system stopped, the temperature was slowly raised to 80°C, and the reaction was maintained for 2 hours.
[0046] The reactant was lowered to room temperature, 20 g of LITFSI dissolved in 2.5 g of DMC was added, and the prepolymer was obtained after stirring for 200 min to obtain a fully uniform.
[0047] At room temperature, pre-dehydrated 2.5 g BDO, 4 g DOP and 2.5 g DBTL were added to the prepolymer prepared above, stirred rapidly for 3 min, and quickly put into a vacuum device for deaeration for 60 s.
[0048] The mixture was flash poured into release agent-coated molds and cured for 8 days at room temperature.
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