Interface reinforced carbon fiber composite material and preparation method thereof
A technology of interface reinforcement and composite materials, which is applied in the field of interface reinforced carbon fiber composite materials and its preparation, can solve the problems of difficult control of assembly structure and limitation of interface bonding reinforcement degree, etc., to suppress expansion and absorb energy, realize uniform stress transmission, improve The effect of surface activity
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Embodiment 1
[0031] (1) Design and preparation of MOF crystals: Add 1,4,5,8-naphthalene tetracarboxylic dianhydride and tryptophan at a molar ratio of 1:2 to the ethanol solvent in which triethylamine was dissolved, at 80°C The carboxyl-terminated naphthalene diimide was reacted for 16 hours, and then added to ethanol solvent with copper perchlorate at a molar ratio of 1:1 to obtain a MOF precursor solution, which was then reacted at 70°C for 36 hours to obtain MOF For crystals, the amount of triethylamine relative to the quality of dibasic anhydride is 0.1%;
[0032] (2) Preparation of MOF seed liquid and MWNT sizing liquid: the ground MOF crystals were dispersed in ethanol solvent to prepare MOF seed liquid, wherein the mass fraction of MOF seed crystal was 0.5%, and carboxylated MWNT powder was ultrasonically dispersed in MWNT sizing solution is configured in ethanol solvent, and the mass fraction of MWNT is 0.1%;
[0033] (3) Hierarchical construction of MOF / MWNT assembly structure on...
Embodiment 2
[0036] (1) Design and preparation of MOF crystals: Add 1,4,5,8-naphthalene tetracarboxylic dianhydride and glycine at a molar ratio of 1:1 to the DMF solvent in which hydroxybenzoic acid is dissolved, and react at 110°C for 12 hours to obtain Carboxyl-terminated naphthalene diimide, and then added to the DMF solvent with zinc sulfate at a molar ratio of 1:1 to obtain a MOF precursor solution, and then reacted at 100°C for 24 hours to obtain MOF crystals. Elementary anhydride quality hydroxybenzoic acid consumption is 0.2%;
[0037] (2) Preparation of MOF seed liquid and MWNT sizing liquid: the ground MOF crystals were dispersed in ethanol solvent to prepare MOF seed liquid, wherein the mass fraction of MOF seed crystal was 0.2%, and carboxylated MWNT powder was ultrasonically dispersed in MWNT sizing solution is configured in ethanol solvent, and the mass fraction of MWNT is 0.2%;
[0038] (3) Hierarchical construction of MOF / MWNT assembly structures on the surface of carbon ...
Embodiment 3
[0041] (1) Design and preparation of MOF crystals: Add 1,3,4,9,10-perylenetetracarboxylic dianhydride and alanine at a molar ratio of 1:1.5 into the DMF solvent in which the hydroxyphenol catalyst was dissolved. The carboxyl-terminated perylene imide was reacted for 14 hours, and then added to the DMF solvent with copper sulfate at a molar ratio of 1:1 to obtain a MOF precursor solution, which was then reacted at 90°C for 30 hours to obtain MOF crystals. The amount of hydroxyphenol relative to the quality of dibasic anhydride is 0.4%;
[0042] (2) Preparation of MOF seed liquid and MWNT sizing liquid: the ground MOF crystals were dispersed in ethanol solvent to prepare MOF seed liquid, wherein the mass fraction of MOF seed crystal was 0.35%, and the carboxylated MWNT powder was ultrasonically dispersed in MWNT sizing solution is configured in ethanol solvent, and the mass fraction of MWNT is 0.15%;
[0043] (3) Hierarchical construction of MOF / MWNT assembly structures on the ...
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