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Method for the preparation of polyphosphate antimony

A technology of antimony polyphosphate and antimony phosphate, which is applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., and can solve problems such as easy water absorption and hindering the use of antimony polyphosphate

Inactive Publication Date: 2011-02-16
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The method of synthesizing antimony polyphosphate in the prior art has a shortcoming: it is very easy to absorb water in the air, which greatly hinders the use of antimony polyphosphate as a flame retardant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: 5.83g antimony trioxide (component A), 13.56g ammonium dihydrogen phosphate (component B) and 0.29g phosphorus pentoxide (component C) were ball milled and mixed uniformly, then at 220°C Carry out solid-phase reaction for 2 hours, then react at 480°C for 4 hours, and the product antimony polyphosphate can be prepared with a yield of 97%. The antimony polyphosphate in the technology is very easy to absorb water.

[0012] The infrared spectrum data of the product antimony polyphosphate IR: 499, 510, 650, 744, 999, 1263cm -1 ;

[0013] The average degree of polymerization of the product antimony polyphosphate is 47.

Embodiment 2～5

[0014] Embodiments 2 to 5: The preparation method is the same as that in the examples, the difference lies in the proportioning and reaction temperature of component A, component B and component C, as shown in the table below.

[0015] Table 1, each embodiment of the present invention and prior art comparative table

[0016]

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PUM

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Abstract

The invention discloses a method for preparation of polyphosphate antimony, belonging to the field of inorganic chemical synthesis. The method comprises the steps of: mixing diantimony trioxide with monoammonium phosphate in a molar ratio of 1:6, then adding a condensing agent in a molar ratio of the diantimony trioxide of 1:0.1-1:0.5, ball-milling and mixing uniformly, afterwards, implementing asolid phase reaction for 1-2 hours at 200-250 DEG C, and subsequently reacting for 2-4 hours at 480-500 DEG C to prepare the product of the polyphosphate antimony. The invention improves the hydroscopic property of the product by increasing the molecular weight of the polyphosphate antimony and measures the product prepared by the invention by a moisture tester, and the hydroscopic property of the product is obviously lower than the prior art and the product is suitable for being applied to fire retardant.

Description

Technical field: [0001] The invention belongs to the field of inorganic chemical synthesis, and in particular relates to a preparation method of antimony polyphosphate. Background technique: [0002] Antimony polyphosphate[Sb(PO 3 ) 3 ] n It can be used in the manufacture of phosphate glass, which can meet some special requirements, such as optical fields, chemical, physical fields, etc. [0003] Antimony polyphosphate can also be used in high-end flame retardant materials due to its high phosphorus and antimony content. [0004] The methods for synthesizing antimony polyphosphate in the prior art all have a shortcoming: it is very easy to absorb water in the air, which greatly hinders the use of antimony polyphosphate as a flame retardant. Invention content: [0005] The object of the present invention is to provide a new preparation method of antimony polyphosphate, the hygroscopicity of the antimony polyphosphate prepared by the method is obviously improved, which i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/40C09K21/04
Inventor 沈永淼齐陈泽
Owner SHAOXING UNIVERSITY