Method for modifying thermosetting polymer material by using supramolecular additive and application thereof
A technology of polymer materials and additives, applied in the field of modification of functional polymer materials, can solve problems such as poor recycling effect, environmental pollution, and high recycling costs, and achieve the effects of low cost, easy availability of raw materials, and a wide range of applications
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Embodiment 1
[0081] Example 1: Preparation of thermosetting polyurethane with 1% hydroxyl-terminated ureidopyrimidinone monomer content
[0082] First, add 0.04883g UPy-OH and 10g DMF into a 100mL round bottom flask, and heat in an oil bath at 120°C for more than 30min under magnetic stirring until a uniform and clear solution is formed. Then, 1.32g of HMDI, 2.5g of PTMEG 1000, 200μL of DBTDL and the above solution were added into another 100mL round-bottomed flask, and heated in an oil bath at 80°C for 2h under magnetic stirring. Take it out after the reaction is finished, and after cooling down to room temperature, add 0.732g THDI and 0.2867g BDO, stir at room temperature until uniform, pour into a polytetrafluoroethylene mold for defoaming. After it was removed until no bubbles were generated, it was placed in a 90°C oven for curing for 12 hours, and the target supramolecular additive-modified polyurethane (referred to as HMPU-U1) was obtained after demoulding.
Embodiment 2
[0083] Example 2: Preparation of thermosetting polyurethane with 5% hydroxyl-terminated ureidopyrimidinone monomer content
[0084] First, add 0.225g UPy-OH and 15g DMF into a 100mL round bottom flask, and heat in an oil bath at 120°C for more than 30min under magnetic stirring until a uniform and clear solution is formed. Then, 1.32g of HMDI, 2.5g of PTMEG 1000, 200μL of DBTDL and the above solution were added into another 100mL round-bottomed flask, and heated in an oil bath at 80°C for 2h under magnetic stirring. Take it out after the reaction is finished, and after cooling down to room temperature, add 0.76g THDI and 0.2668g BDO, stir at room temperature until uniform, pour into a polytetrafluoroethylene mold for defoaming. After removing until no bubbles are generated, place it in an oven at 90°C to cure for 12 hours, and then remove the mold to obtain the target supramolecular additive-modified polyurethane (referred to as HMPU-U5).
Embodiment 3
[0085] Example 3: Preparation of 9% thermosetting polyurethane with hydroxyl-terminated ureidopyrimidone monomer content
[0086]First, add 0.4802g UPy-OH and 20g DMF into a 100mL round bottom flask, and heat in an oil bath at 120°C for more than 30min under magnetic stirring until a uniform and clear solution is formed. Then, 1.32g of HMDI, 2.5g of PTMEG 1000, 200μL of DBTDL and the above solution were added into another 100mL round-bottomed flask, and heated in an oil bath at 80°C for 2h under magnetic stirring. Take it out after the reaction is finished, and after cooling down to room temperature, add 0.80g THDI and 0.24505g BDO, stir at room temperature until uniform, pour into a polytetrafluoroethylene mold for defoaming. After removing until no bubbles are generated, place it in an oven at 90°C to cure for 12 hours, and remove the mold to obtain the target supramolecular additive-modified polyurethane (referred to as HMPU-U9).
[0087] The result is as Figure 1-5 As s...
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