Method for modifying nano-zinc oxide powder

A nano-zinc oxide, modified technology, applied in chemical instruments and methods, dyed low molecular organic compound treatment, inorganic pigment treatment and other directions, can solve the problems of difficult compatibility of organic components, high surface energy, small size, etc. The effect of eliminating high energy potential, reducing raw material cost, improving material properties and loading

Inactive Publication Date: 2016-07-27
ANHUI YINGDA ZINC IND DEV CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

However, nano-zinc oxide is an inorganic oxide with small size and high surface energy, which is difficult to be compatible with organic components, and it is easy to cause serious agglomeration.

Method used

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Experimental program
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Embodiment Construction

[0014] A method for modifying nano-zinc oxide powder, comprising the following steps (1) using a dispersant to prepare a titanate coupling agent solution with a certain concentration, placing it on a CL-4 type constant temperature heating magnetic stirrer and heating it until completely Melting; the dispersant is one of the monoalkoxy titanate coupling agents;

[0015] (2) Add nano-zinc oxide to the melt under constant stirring, the particle size of nano-zinc oxide is about 14-20nm, continue heating reaction after it dissolves completely, until reddish-brown gas is emitted from the beaker, stop heating;

[0016] (3) The reacted solution is poured out and cooled to complete solidification;

[0017] (4) The modified nano-zinc oxide obtained in step (2) is placed in a furnace, and subjected to high-temperature roasting to obtain nano-zinc oxide with silicon dioxide deposited on the surface; the described high-temperature roasting process is: Under these conditions, the temperatu...

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Abstract

The invention discloses a method for modifying nano-zinc oxide powder.The method comprises the following steps that 1, a dispersing agent is prepared into a titanate coupling agent solution with a certain concentration, and the titanate coupling agent solution is placed on a CL-4 type constant-temperature magnetic heating stirrer to be heated until the solution is completely melted; 2, nano-zinc oxide is added into a molten solution under continuous stirring, reacting under heating continues after nano-zinc oxide is completely dissolved until reddish brown gas is emitted out from a beaker, and heating is stopped; 3, a solution obtained after reacting is poured out and cooled to be completely cured; 4, modified nano-zinc oxide prepared in the step 2 is placed in a furnace for high-temperature calcination, and then nano-zinc oxide with silicon dioxide deposited on the surface is prepared.According to the method, the defects of the prior art are overcome, the high energy potential of the surface of nano-zinc oxide is eliminated, the hydrophobicity is regulated, the wettability and the binding force between nano-zinc oxide and an organic base material are improved, therefore, the material performance is improved to the maximum limitation, the filling quantity is increased to the maximum limitation, and the raw material cost is reduced; meanwhile, the dispersity and the stability of nano-zinc oxide are improved.

Description

technical field [0001] The invention relates to the technical field of zinc oxide modification, in particular to a method for modifying nanometer zinc oxide powder. Background technique [0002] Nano-zinc oxide is an inorganic ultraviolet shielding agent with excellent performance, which is widely used in sunscreen cosmetics, nano-functional textiles, functional plastics and coatings and other fields. However, nano-zinc oxide is an inorganic oxide with small size and high surface energy, and it is difficult to be compatible with organic components, so it is easy to cause serious agglomeration. Therefore, it is necessary to modify the surface of nano zinc oxide. Contents of the invention [0003] In view of the above problems, the purpose of the present invention is to provide a method for modifying nano zinc oxide powder, which overcomes the deficiencies in the prior art, eliminates the high energy potential on the surface of zinc oxide, adjusts hydrophobicity, and improv...

Claims

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Application Information

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IPC IPC(8): C09C1/04C09C3/08C09C3/04
CPCC09C1/043C01P2006/22C09C3/006C09C3/043C09C3/08
Inventor 余琼鹏
Owner ANHUI YINGDA ZINC IND DEV CO LTD
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