A carbon fiber surface grafted two-dimensional network structure reinforced polyetheretherketone composite material and its preparation method
A technology of polyetheretherketone and network structure, which is applied in the field of carbon fiber surface grafting two-dimensional network structure reinforced polyetheretherketone composite material and its preparation, which can solve the problem of destroying CF strength, limiting the degree of interface modification and interaction of composite materials. Weakness and other problems, to achieve the effect of increasing the mechanical interlocking effect, improving the mechanical strength and toughness, and increasing the interface bonding effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0029] The invention provides a method for preparing a carbon fiber surface grafted two-dimensional network structure reinforced polyetheretherketone composite material, comprising the following steps:
[0030] Mix carbon fiber, p-phenylenediamine, nitrite and concentrated hydrochloric acid for diazotization reaction to obtain aminated carbon fiber;
[0031] Mixing biphenyl dianhydride, aminosilane coupling agent and the first solvent for modification to obtain a modified silane coupling agent;
[0032] Mixing the dispersion of silicon dioxide nanowires with the modified silane coupling agent to modify them to obtain modified silicon dioxide nanowires;
[0033] Mixing the modified silica nanowires, aminated graphene, aminated carbon fiber and a second solvent for grafting to obtain a two-dimensional network structure grafted carbon fiber;
[0034]The two-dimensional network structure grafted carbon fiber and polyether ether ketone are mixed, extruded and molded in sequence to...
Embodiment 1
[0062] 20g chopped carbon fiber (SCF) was added to the concentrated hydrochloric acid solution (mass concentration: 38%) containing 0.25g p-phenylenediamine and 0.25g sodium nitrite, and the pH value was adjusted to 1. After nitriding reaction for 8 hours, wash with deionized water until neutral, and dry in vacuum to obtain aminated carbon fiber, denoted as NH 2 -CF;
[0063] Dissolve 0.25g of biphenyl dianhydride in DMAc solvent under nitrogen protection and room temperature. After it dissolves, add 0.25g of KH550 dropwise for modification for 5 hours. Washing, ethanol recrystallization several times, drying to obtain modified KH550 (g-KH550);
[0064] 0.5g SNF (silicon dioxide nanowire) was ultrasonically dispersed in ethanol for 2h, and the g-KH550 was quickly added at 60°C for 8h of modification, and unreacted g-KH550 was removed by washing with ethanol and deionized water. Vacuum drying to obtain modified silica nanowires, denoted as SNF-g-KH550;
[0065] The SNF-g-KH5...
Embodiment 2
[0070] 20g chopped carbon fiber (SCF) was added to the concentrated hydrochloric acid solution (mass concentration: 38%) containing 0.30g p-phenylenediamine and 0.30g sodium nitrite, and the pH value was adjusted to 1. After nitriding reaction for 8 hours, wash with deionized water until neutral, and dry in vacuum to obtain aminated carbon fiber, denoted as NH 2 -CF;
[0071] Dissolve 0.30g of biphenyl dianhydride in DMAc solvent under nitrogen protection and room temperature. After it dissolves, add 0.30g of KH550 dropwise for modification for 5 hours. Washing, ethanol recrystallization several times, drying to obtain modified KH550 (g-KH550);
[0072] Ultrasonic disperse 1g of SNF in ethanol for 2 hours, quickly add the g-KH550 at 60°C, and modify it for 8 hours, wash with ethanol and deionized water to remove unreacted g-KH550, and dry in vacuum to obtain modified silica Nanowire, denoted as SNF-g-KH550;
[0073] Add SNF-g-KH550 and 1g aminoated graphene (AGP) into DMAc ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
| size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More