51results about How to "Synthetic preparation is simple" patented technology

The invention relates to an intrinsic room-temperature self-repairing crystalline polymer, which comprises the following components: micromolecule divalent alcohol monomer containing alcoxyl amine group, crystalline polyether or polyester-diol monomer and diisocyanate or triisocyanate monomer. The self-repairing functional material can joint rupture surfaces after being mechanically damaged, and can restore most mechanical properties after being placed at the temperature of 15-25 DEG C for a period time of self-repairing. The repairing mechanism of the intrinsic room-temperature self-repairing crystalline polymer lies in reversible C-ON preferred fracturing, and after re-junction of the fracture surfaces, molecular chains are mutually diffused, and then the carbon free radical and NO free radical at the ends of the molecular chains are combined. The intrinsic self-repairing material presents the characteristics of a rigid solid material, has the characteristics of simplicity in preparation, room-temperature self-repairing performance, high repairing efficiency, short repair time, capability of realizing repeated repair and the like, facilitates prolonging the service life of the polymer material and conforms to the development tendency of global low-carbon economy.

The invention discloses a polyurethane, a polyurethane solid electrolyte and its preparation method and application. The polyurethane is mainly prepared from the following raw materials in parts by weight: 15-34 parts of diisocyanate monomer, 35-85 parts of diol monomer, 4-17 parts of flavonol monomers containing at least three hydroxyl groups; the diol is polyether diol and / or polyester diol. The polyurethane of the invention has the advantages of high strength and high toughness, low glass transition temperature, good thermal stability, good mechanical properties and high ion conductivity when used in solid state electrolytes. Moreover, after adding metal ions, the flavonol monomer structure forms a coordination bond with the metal ions, which further enhances the strength and toughness of the polyurethane, further reduces the glass transition temperature, and endows the polyurethane with better mechanical properties and good thermal stability. In addition, the polyurethane has a simple structure and is easy to synthesize and prepare.

The invention discloses a thermal self-repairing polymer material, and preparation and repairing methods thereof. The thermal self-repairing polymer material is prepared from 40-60 parts of 2,2,6,6-tetramethylpiperidinooxy (TEMPO) low molecular derivative modified polymer and 60-40 parts of 4-hydroxy-2,2,6,6-tetramethylpiperidinooxy (4-OH-TEMPO) low molecular derivative modified polymer. The preparation method comprises the following steps: dissolving the TEMPO low molecular derivative modified polymer and 4-OH-TEMPO low molecular derivative modified polymer in an organic solvent, and directly pouring the solution in a die to form a film, thereby obtaining the thermal self-repairing polymer material. The repairing method comprises the following steps: in the presence of inert gas, carrying out heat treatment on the damaged material at 110-130 DEG C for 15-30 minutes, and cooling to room temperature, thereby repairing the thermal self-repairing polymer material. The thermal self-repairing polymer material has the advantages of simple preparation process, high repairing capability, short repairing time and the like, and can be repaired many times, thereby prolonging the service lifeof the polymer material and conforming to the development trend of low-carbon economy.