A 3D printing high-strength and high-toughness polyether ether ketone carbon nanotube composite material and its preparation method
A carbon nanotube and polyetheretherketone technology, applied in the field of 3D printing materials, can solve the problem of limited improvement in toughness, and achieve the effects of reducing stress concentration, improving mechanical properties, and improving fracture toughness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0037] The preparation method of the 3D printing grade polyetheretherketone resin special material includes the following steps:
[0038] Mix 4,4'-difluorobenzophenone, hydroquinone, alkali catalyst, melted diphenyl sulfone and water-carrying agent, carry out water-carrying and polymerization reactions in sequence, and add 4-fluorodicarbonate to the obtained product. Phenyl sulfone was end-capped to obtain a special material for 3D printing grade polyether ether ketone resin.
[0039] In the present invention, the molar ratio of the 4,4'-difluorobenzophenone to hydroquinone is preferably (1.005-1.05):1, more preferably 1.02-1.05:1, further preferably 1.03: 1.
[0040] In the present invention, the alkali catalyst preferably includes sodium carbonate and potassium carbonate, the sodium carbonate is preferably anhydrous sodium carbonate, and the potassium carbonate is preferably anhydrous potassium carbonate; the sodium carbonate, potassium carbonate and terephthalic acid The ...
Embodiment 1
[0087] 2,7-naphthalenediol (24.03g, 0.15mol), 4,4'-difluorobenzophenone (65.46g, 0.3mol), hydroquinone (16.52g, 0.15mol) and sulfolane 424.04g (336mL) was put into the flask, the solid content of the obtained reaction system was 20wt%, anhydrous potassium carbonate (49.79g, 0.36mol) and toluene (100mL) were added, the temperature was raised to 140°C, the azeotrope was refluxed with water for 2h, and the belt was discharged. The water agent was heated to 180 °C, and the polymerization reaction was carried out for 2 hours. The obtained product was discharged into deionized water, and the obtained strip-shaped solid was sequentially pulverized, washed and dried to obtain a carbon nanotube interface modifier. The structural formula is:
[0088]
Embodiment 2
[0090] The carbon nanotubes (4.95 g), 2,7-naphthalenediol (24.03 g, 0.15 mol) and 150 mL of toluene were placed in a 1000 mL three-necked flask and sonicated for 2 h, and 4,4'-difluorobenzophenone ( 65.46g, 0.3mol), hydroquinone (16.52g, 0.15mol), anhydrous potassium carbonate (49.79g, 0.36mol) and sulfolane 443.84g (352mL) were charged into the flask, and the solid content of the obtained reaction system was 20wt %, heat up to 140°C, azeotrope with water and reflux for 2h, discharge the water-carrying agent, heat up to 180°C, continue the reaction for 2h, discharge into deionized water, discharge the obtained product into deionized water, and put the obtained strip solid pulverizing, washing and drying in sequence to prepare a carbon nanotube-interface modifier binary blend with a carbon nanotube content of 5%;
[0091] Take 10g of the above binary blend and 90g of 3D printing grade polyetheretherketone resin special material with a melt index of 30g / 10min, premix in a high-s...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Diameter | aaaaa | aaaaa |
| Length | aaaaa | aaaaa |
| Melt index | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More