Thermoplastic polyurethane/graphene foam material and preparation method and application thereof
A thermoplastic polyurethane, foaming material technology, applied in chemical instruments and methods, lamination, coating and other directions, can solve the problems of electromagnetic wave reflection enhancement, secondary pollution of the environment, etc., to improve absorption loss, good flexibility and self-adhesion , the effect of high market application prospects
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[0035] Example 1
[0036] (1) Add 0.83 g of graphene to 300 mL of DMF, and ultrasonically disperse for 10 minutes to obtain a black suspension. Add 20 g of thermoplastic polyurethane elastomer particles to the suspension, stir and dissolve in an oil bath at 60° C. for 5 hours at high speed, and then pour the resulting mixed solution into distilled water for precipitation. Finally, place the precipitated thermoplastic polyurethane / graphene mixture in a vacuum oven at 60°C for 48 hours, take it out and pulverize for use;
[0037] (2) Re-dissolve the thermoplastic polyurethane / graphene mixture in step (1) in 100 mL of DMF to obtain a mixed film casting solution, pour it into the scraping groove of the doctor blade and coat it on a clean glass plate. The thickness is set to 4mm. After completion, place it in the air with a relative humidity of 80% at room temperature for 3h, and then take it out and place it in a vacuum oven at 30℃ for 24h to obtain a thermoplastic polyurethane / graph...
Example Embodiment
[0047] Example 2
[0048] The materials used in this example are the PUG8 and PUG16 prepared in Example 1. They are bonded with PU glue in the order of graphene content from small to large to form a two-layer thermoplastic polyurethane / graphite with graphene concentration gradient Olefin foam material.
Example Embodiment
[0052] Example 3
[0053] The materials used in this example are the PUG4 and PUG12 prepared in Example 1. They are bonded with PU glue in the order of graphene content from small to large to form a two-layer thermoplastic polyurethane / graphite with graphene concentration gradient Olefin foam material.
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