Preparation method of multifunctional nanocluster

A nano-cluster and multi-functional technology, which is applied in the field of preparation of multi-functional nano-clusters, can solve the problems of being difficult to disperse evenly and affecting the effect of α-ZrP on polymer flame retardancy and improving mechanical properties, achieving The effect of good compatibility

Active Publication Date: 2017-05-10
CHANGSHU GOLD SPRING CHEM FIBERS & KNITTINGS +1
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Problems solved by technology

[0003] However, like most inorganic nano-powders, α-ZrP has a large number of hydroxyl groups on the surface and is highly hydrophilic. It is incompatible with most hydrophobic thermoplastic polymers, and it is difficult to disperse evenly in the polymer matrix. , thereby affecting the flame retardancy and improving the mechanical properties of α-ZrP polymers

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  • Preparation method of multifunctional nanocluster

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[0029] The steps of the preparation method of the multifunctional nano-cluster of the present invention are as follows:

[0030] 1) Disperse α-ZrP in the solvent. The surface of α-ZrP contains a large number of hydroxyl groups, which is highly hydrophilic and can be well dispersed in the solvent. The dispersion of α-ZrP can be promoted by ultrasound;

[0031] 2) Add metal salt solution for ion exchange reaction, α-ZrP has high ion exchange capacity, and functional metal ions can easily enter α-ZrP to form functional α-ZrP;

[0032] 3) Then add the silane coupling agent dropwise to continue the reaction. The siloxane group in the silane coupling agent will be hydrolyzed when it encounters water to form a highly reactive silanol bond Si-OH. Si-OH can be combined with α-ZrP sheet The dehydration and condensation reaction of P-OH on the surface generates a P-O-Si covalent bond with high thermal stability on the surface of the α-ZrP sheet. At the same time, because the silane coupl...

Embodiment 1

[0039] according to figure 1 As shown in the process, the steps of the preparation method of multifunctional nanoclusters are:

[0040] 1) Disperse α-ZrP in tetrahydrofuran solution with ultrasonic and mechanical stirring at room temperature, ultrasonic power is 50W, time is 20min; mechanical stirring speed is 200r / min, time is 20min, and the concentration of α-ZrP after dispersion is 0.05g / ml;

[0041]2) adding copper sulfate for ion exchange reaction, the molar ratio of copper sulfate to α-ZrP is 1:10, and the reaction time of adding copper sulfate is 6h;

[0042] 3) Add dropwise silane coupling agent KH550 to continue the reaction; the mass ratio of the amount of KH550 added to α-ZrP is 0.5:1; the rate of addition is 0.1ml / min; the time for continuing the reaction is 3h;

[0043] 4) adding nitric acid with a mass fraction of 80% to treat the multi-walled carbon nanotubes; the reaction temperature is 80° C., and the reaction time is 12 hours.

[0044] 5) Add E51 to modify...

Embodiment 2

[0048] according to figure 1 As shown in the process, the steps of the preparation method of multifunctional nanoclusters are:

[0049] 1) Disperse α-ZrP in chloroform with ultrasonic and mechanical stirring at room temperature, the ultrasonic power is 90W, and the time is 50min; the speed of mechanical stirring is 800r / min, and the time is 50min. Concentration is 0.2g / ml;

[0050] 2) adding silver nitrate for ion exchange reaction, the molar ratio of silver nitrate to α-ZrP is 1:15, and the reaction time of adding silver nitrate is 10h;

[0051] 3) Add silane coupling agent KH550 dropwise to continue the reaction; the mass ratio of the amount of KH550 added to α-ZrP is 1:1; the rate of addition is 0.1ml / min; the time for continuing the reaction is 5h;

[0052] 4) Add nitric acid with a mass fraction of 70% to treat nano-carbon black; the reaction temperature is 75°C, and the reaction time is 12 h.

[0053] 5) Add E51 modified acidified nano-carbon black; the molar ratio of...

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Abstract

The invention relates to a preparation method of a multifunctional nanocluster and belongs to the technical field of material modification. The preparation method comprises the following steps: dispersing alpha-ZrP into a solvent; adding metal salt to carry out ion substitution reaction; dropwise adding a silane coupling agent to continuously react, so as to obtain KH550-modified functional alpha-ZrP; acidifying a carbon material, so as to obtain the acidified carbon material; carrying out epoxy modification on the acidified carbon material by virtue of an epoxy modifying agent E51, so as to obtain epoxy-C; adding the KH550-modified functional alpha-ZrP into epoxy-C to react; and separating, washing and drying solid-phase products, so as to obtain the multifunctional nanocluster. The multifunctional nanocluster has good antimicrobial effect, anion effect, heat conduction effect and anti-static effect, and can present good consistency with a polymer matrix, thereby meeting functional modification requirements to polymers.

Description

technical field [0001] The invention belongs to the technical field of material modification, and in particular relates to a preparation method of multifunctional nano-clusters. Background technique [0002] α-zirconium phosphate (α-ZrP) is a layered phosphate with remarkable features such as high ion exchange performance (7meq / g, MMT is 1meq / g), controllable area ratio, high thermal and chemical stability , compared with other layered nanofillers, it is easier to be intercalated or exfoliated in the polymer matrix, and it is widely used in catalysts, fuel cells, photochemistry, environmental protection, flame retardants and other fields. [0003] However, like most inorganic nanopowders, α-ZrP has a large number of hydroxyl groups on the surface and is highly hydrophilic. It is incompatible with most hydrophobic thermoplastic polymers, and it is difficult to disperse evenly in the polymer matrix. , thereby affecting the flame retardancy of α-ZrP on high molecular polymers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/174C01B32/15C01B32/21C01B25/37C08K9/06C08K3/32C08K9/04C08K3/04C08K7/24
CPCC01B25/372C08K3/04C08K3/32C08K7/24C08K9/04C08K9/06C08K2003/328C08K2201/011C08K2201/017
Inventor 樊海彬朱美芳周哲杨新华张林扬周家良
Owner CHANGSHU GOLD SPRING CHEM FIBERS & KNITTINGS
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