Preparation method for composite fiber of hyperbranched polymer grafted graphene
A technology of hyperbranched polymers and grafted graphite, which is applied in the direction of single-component synthetic polymer rayon, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems that composite fibers cannot be realized, and achieve good toughness and spinning The effect of simple process and excellent mechanical properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0017] The steps of the preparation method of hyperbranched polymer grafted graphene composite fiber are as follows:
[0018] 1) Add 1 part by weight of graphene oxide, 50-2000 parts by weight of solvent, and 1-100 parts by weight of hyperbranched polymer into the reactor, blow nitrogen, heat to 140-220 ° C, and react for 2-50 h, After centrifugation, washing, and drying, a hyperbranched polymer grafted graphene nanocomposite material is obtained, and the mass percentage of the hyperbranched polymer is 10-80%;
[0019] 2) Dispersing the hyperbranched polymer grafted graphene nanocomposite material in a solvent to prepare a spinning slurry with a mass percentage of 1-50%;
[0020] 3) Pass the spinning slurry through a spinning nozzle with a diameter of 5-5000 μm at an extrusion speed of 1-100 mL / h, stay in a coagulation solution at 5-30°C for 1-3600s and solidify into silk, wash, 40-80 Celsius and vacuum-dried for 24 hours to obtain a composite fiber of hyperbranched polymer g...
Embodiment 1
[0028] 1) Add 20mg of graphene oxide, 1g of N-methyl-2-pyrrolidone, 2g of hyperbranched polyglycidyl ether into the reaction flask, heat to 160°C under nitrogen, react for 16 h, centrifuge, N,N-di Methyl formamide washing, vacuum drying, obtain hyperbranched polyglycidyl ether grafted graphene nanocomposite product, wherein the weight content of hyperbranched polyglycidyl ether is 65%;
[0029] 2) Add 100 mg hyperbranched polyglycidyl ether-grafted graphene to 0.1 mL N, N-dimethylformamide to prepare a spinning slurry with a mass percentage of 50%;
[0030] 3) The graphene spinning solution sol grafted with hyperbranched polyglycidyl ether was passed through a spinning capillary with a diameter of 5000 μm at an extrusion rate of 1 mL / h, and solidified in ethyl acetate at 5°C for 50 s Filamented, collected with a winder, and vacuum-dried at 40 degrees for 24 hours to obtain a composite fiber of hyperbranched polyglycidyl ether grafted graphene with a diameter of 5000 μm, a brea...
Embodiment 2
[0032] 1) Add 20mg of graphene oxide, 0.5g of N-methyl-2-pyrrolidone, 20 mg of hyperbranched polyglycidyl ether into the reaction bottle, blow nitrogen, heat to 140°C, react for 24h, after centrifugation, N,N- Dimethylformamide washing, vacuum drying, obtain hyperbranched polyglycidyl ether grafted graphene nanocomposite product, wherein the weight content of hyperbranched polyglycidyl ether is 10%;
[0033] 2) Add 100 mg of hyperbranched polyglycidyl ether-grafted graphene to 0.9 mL of water to prepare a spinning slurry with a mass percentage of 1%;
[0034] 3) The graphene spinning solution sol grafted with hyperbranched polyglycidyl ether was passed through a spinning capillary with a diameter of 5 μm at an extrusion speed of 100 mL / h, and solidified in KOH methanol solution at 30 °C for 5 s Filamented, collected by a winder, vacuum-dried at 40°C for 24 hours to obtain a hyperbranched polyglycidyl ether-grafted graphene composite fiber with a diameter of 5 μm, a breaking st...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More