Ion exchange resin composition, its preparation method and its formed membrane material
A technology of ion exchange resin and ion polymer, applied in the direction of chemical instruments and methods, membrane, membrane technology, etc., can solve the problems of low membrane strength, poor dimensional stability, swelling deformation, etc.
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Embodiment 1
[0061] After taking 70 parts by weight of sulfonate polyester (type AQ48, purchased from Eastman) with hydroxy or carboxyl at the end, mixed with 2 parts by weight of ethylene glycol and 102.5 parts by weight of dimethylacetamide (DMAC), 7.72 parts by weight were added. Parts by weight of 1,2,4,5-pyromellitic dianhydride (benzene-1,2:4,5-tetracarboxylic dianhydride; PMDA) form a solution. The solution was heated to 130°C for 3 hours to obtain a solution with an ionic polymer (first intermediate), and then cooled to 90°C.
[0062]Dissolve 20 parts by weight of epoxy compound (epoxy equivalent EEW: 215 g / equiv) in 20 parts by weight of dimethylacetamide, and then add the above solution with ionic polymer (first intermediate) , heated to 90° C. for 2 hours, and cooled to room temperature to obtain the first mixed solution. The first mixed solution is an alkyd resin homogeneous solution, which is a fluid dark amber liquid.
[0063] Take 10g of the above-mentioned first mixed sol...
Embodiment 2
[0074] After getting 80 parts by weight of sulfonate polyester (model AQ55S, purchased from Eastman) with hydroxy or carboxyl at the end, mixed with 2 parts by weight of ethylene glycol and 107 parts by weight of dimethylacetamide (DMAC), 1.93 parts by weight was added. Parts by weight of 1,2,4,5-pyromellitic dianhydride (PMDA) form a solution. The solution was heated to 130°C for 3 hours to obtain a solution with an ionic polymer (first intermediate), and then cooled to 90°C.
[0075] Dissolve 18 parts by weight of epoxy compound (epoxy equivalent EEW: 215 g / equivalent) in 25 parts by weight of dimethylacetamide, add the above solution with ionic polymer (first intermediate), heat After reacting at 90° C. for 2 hours, and then lowering to room temperature, the first mixed solution can be obtained. The first mixed solution is an alkyd resin homogeneous solution, which is a fluid dark amber liquid.
[0076] Take 10g of the above-mentioned first mixed solution (dark amber liqu...
Embodiment 3
[0087] After getting 80 parts by weight of sulfonate polyester (model AQ55S, purchased from Eastman) with hydroxy or carboxyl at the end, mixed with 2 parts by weight of ethylene glycol and 107 parts by weight of dimethylacetamide (DMAC), 1.93 parts by weight was added. Parts by weight of 1,2,4,5-pyromellitic dianhydride (PMDA) form a solution. The solution was heated to 130°C for 3 hours to obtain a solution with an ionic polymer (first intermediate), and then cooled to 90°C.
[0088] Dissolve 18 parts by weight of epoxy compound (epoxy equivalent EEW: 215 g / equivalent) in 25 parts by weight of dimethylacetamide, add the above solution with ionic polymer (first intermediate), heat The reaction was carried out at 90° C. for 2 hours, and the first mixed solution was obtained after the temperature was lowered to room temperature. The first mixed solution is an alkyd resin homogeneous solution, which is a fluid dark amber liquid.
[0089] Take 10g of the above-mentioned first m...
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