Method for preparing super-microporous polymer material without surface gas traces
A polymer material and ultra-microporous technology, which is applied in the field of non-supercritical foaming preparation of ultra-microporous polymer materials, can solve the problems such as the inability to prepare with microporous polymer materials, and achieves easy control, good quality, and ease of use. The effect of cell structure
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Embodiment 1
[0025] First, polymer nano-core-shell particles were prepared by one-step phase separation emulsion polymerization. The specific ratio and operation sequence were as follows: 1) 56g styrene, 260g distilled water, 72g isooctane, 2g methacrylic acid, 40g Methanol was mixed in the flask, and 12 ml of tert-dodecyl mercaptan was added rapidly to the mixture, and the temperature was raised to 90 °C, and then 24 g of 5% mass fraction of sodium persulfate aqueous solution was added dropwise at a constant speed within 75 min. In the reaction vessel, the reaction process was kept stirring rapidly, and the reaction temperature remained at 90 °C. 2) Within 225 minutes, add 24g of 5% mass fraction sodium persulfate aqueous solution, 44g of sodium dodecylsulfonate and sodium dodecylbenzenesulfonate aqueous solution, 120g of styrene, 20g of divinylbenzene, 1g At the same time, the mixture of methacrylic acid was added dropwise into the reaction vessel at a constant speed, and the reaction co...
Embodiment 2
[0029]First, polymer nano-core-shell particles were prepared by one-step phase separation emulsion polymerization. The specific ratio and operation sequence were as follows: 1) 56g styrene, 260g distilled water, 72g isooctane, 2g methacrylic acid, 40g Methanol was mixed in the flask, and 12 ml of tert-dodecyl mercaptan was added rapidly to the mixture, and the temperature was raised to 90 °C, and then 24 g of 5% mass fraction of sodium persulfate aqueous solution was added dropwise at a constant speed within 75 min. In the reaction vessel, the reaction process was kept stirring rapidly, and the reaction temperature remained at 90 °C. 2) Within 225 minutes, add 24g of 5% mass fraction sodium persulfate aqueous solution, 44g of sodium dodecylsulfonate and sodium dodecylbenzenesulfonate aqueous solution, 120g of styrene, 20g of divinylbenzene, 1g At the same time, the mixture of methacrylic acid was added dropwise into the reaction vessel at a constant speed, and the reaction con...
Embodiment 3
[0033] First, polymer nano-core-shell particles were prepared by one-step phase separation emulsion polymerization. The specific ratio and operation sequence were as follows: 1) 56g styrene, 260g distilled water, 72g isooctane, 2g methacrylic acid, 40g Methanol was mixed in the flask, and 12 ml of tert-dodecyl mercaptan was added rapidly to the mixture, and the temperature was raised to 90 °C, and then 24 g of 5% mass fraction of sodium persulfate aqueous solution was added dropwise at a constant speed within 75 min. In the reaction vessel, the reaction process was kept stirring rapidly, and the reaction temperature remained at 90 °C. 2) Within 225 minutes, add 24g of 5% mass fraction sodium persulfate aqueous solution, 44g of sodium dodecylsulfonate and sodium dodecylbenzenesulfonate aqueous solution, 120g of styrene, 20g of divinylbenzene, 1g At the same time, the mixture of methacrylic acid was added dropwise into the reaction vessel at a constant speed, and the reaction co...
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