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Method of preparing nano-zinc borate

A nano-zinc borate and nano-technology, which is applied in the direction of borate, boron oxide, etc., can solve the problem of nano-particle size difference, and achieve the effect of improving interface binding force and easy dispersibility

Inactive Publication Date: 2007-01-31
FOSHAN ONMILLION NANO MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of existing zinc borate products in the market is small, but it is still far from the size of nanoparticles

Method used

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  • Method of preparing nano-zinc borate
  • Method of preparing nano-zinc borate

Examples

Experimental program
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Effect test

example 1

[0050]Example 1: take by weighing 3.24Kg borax respectively, after 3.24Kg zinc sulfate and 0.0324Kg zinc oxide are mixed, add 4.56Kg water and 0.15Kg N-propyltrimethoxysilane, modulate into rheological state, change to airtight container at 80 ℃ for 3 hours, keep the concentration of boric acid at 0.6 mol / l during the reaction process, after cooling to room temperature, take out the reaction product, filter, and dry at 120-140 ℃ to obtain the desired nano-zinc borate product. as attached figure 1 Shown flow process, the sodium sulfate mother liquor in last production process returns in the synthesis reactor, and reacts together with the newly added zinc sulfate, borax, zinc oxide. After the reaction is complete, let it stand for half an hour, filter while it is hot, and send the obtained nano-zinc borate into a dry box to obtain a finished product. The mother liquor is sent to the evaporator, evaporated to the saturation point of sodium sulfate and boric acid, and sodium sulf...

example 2

[0053] Weigh 7.00Kg of borax, 5.00Kg of zinc sulfate and 0.08Kg of zinc oxide and mix them, then add 7.5Kg of water and 0.12Kg of N-propyltrimethoxysilane to make a rheological state, transfer them to a closed container and react at 100°C for 3 hours During the reaction process, the concentration of boric acid is kept at 0.3 mol / l. After cooling to room temperature, the reaction product is taken out, filtered, and dried at 120-140° C. to obtain the desired nano-zinc borate product.

example 3

[0055] Weigh 1.0Kg of borax, 5.0Kg of zinc sulfate and 0.08Kg of zinc oxide and mix them, then add 1.82Kg of water and 0.12Kg of N-propyltriethoxysilane to make a rheological metamorphosis, transfer them into a closed container and react at 100°C for 5 Keep the concentration of boric acid at 0.4 mol / l during the reaction process. After cooling to room temperature, take out the reaction product, filter, and dry at 120-140° C. to obtain the desired nano-zinc borate product.

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Abstract

The present invention relates to a method for preparing nano zinc borate. Said method includes the following steps: A, uniformly mixing borax, zinc sulfate and zinc oxide according to the weight ratio of 1-7:1-5:0.1-0.08; B, adding water whose added quantity is 0.01%-70% of total weight of borax, zinc sulfate and zinc oxide, stirring them to form rheological state; C, adding surfactant in the product obtained by step B, then retaining constant temperature for 3-5hr at 60-100deg.C; and D, cooling the product obtained by step C to 20-30deg.C, filtering, water-washing and drying at 120-140deg.C so as to obtain the invented product.

Description

technical field [0001] The invention relates to a method for preparing nanometer zinc borate. Background technique [0002] Inorganic flame retardant does not contain halogen and has good heat resistance. The biggest advantage is that it does not produce toxic and corrosive gases, is a physiologically harmless substance, and is environmentally friendly. It will not cause secondary pollution when burning, and has become a hot research topic in the field of flame retardants today. However, due to the poor flame retardant effect of inorganic flame retardants, new technologies such as miniaturization and surface modification must be used to improve their flame retardant effects. [0003] Zinc borate is a kind of inorganic flame retardant, and it is an excellent flame retardant for plastics, rubber, chemical building materials and other organic polymer composite materials. It has the advantages of good thermal stability, fine particle size, small specific gravity, easy dispers...

Claims

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Application Information

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IPC IPC(8): C01B35/12
Inventor 陈焰
Owner FOSHAN ONMILLION NANO MATERIALS
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