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Method for graft modification of insoluble ammonium polyphosphate through organosilicon, and use of obtained product

A technology of ammonium polyphosphate and graft modification, which is applied in the treatment of dyed organic silicon compounds and fibrous fillers. The effect of easy moisture absorption, good flame retardancy, good flame retardancy and hydrophobic properties

Inactive Publication Date: 2014-04-02
CHENGDU TEXTILE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a new method for organosilicon graft modification insoluble ammonium polyphosphate, through special modifier and solvent for graft modification, so that it has good flame retardancy and hydrophobic properties, and Overcome the problems that ammonium polyphosphate is easy to absorb moisture, poor compatibility and the coating film is easy to break

Method used

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  • Method for graft modification of insoluble ammonium polyphosphate through organosilicon, and use of obtained product
  • Method for graft modification of insoluble ammonium polyphosphate through organosilicon, and use of obtained product
  • Method for graft modification of insoluble ammonium polyphosphate through organosilicon, and use of obtained product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Evenly disperse 10 parts of insoluble I-type ammonium polyphosphate (APP) in 15 parts of solvent acetone, add 3 parts of aminosiloxane and 1. part of MeSi (O-N=CMe 2 ) 3 , after mixing evenly, heat to 40°C, remove the solvent, dry, then heat up to 110°C, react for 30 minutes, cool to room temperature, and then pulverize to 50nm particles to obtain the modified insoluble I-type ammonium polyphosphate product. The yield is 95%.

[0034] The changes in moisture absorption, dispersibility and solubility of modified I-type APP and unmodified I-type APP were respectively tested according to the aforementioned method, and the results are listed in Table 1, Table 2 and Table 3 respectively.

[0035] Table 1 Changes in the moisture absorption of modified I-type APP and unmodified I-type APP

[0036]

[0037] It can be seen from Table 1 that the moisture absorption of the modified I-type APP changes very little with time, less than 2%, and after more than 72 hours, it is bas...

Embodiment 2

[0045] Evenly disperse 10 parts of insoluble II-type ammonium polyphosphate in 35 parts of solvent petroleum ether, add 4 parts of epoxypropylsiloxane and 2 parts of CH 2 =CH-Si(O-N=CMe 2 ) 3 , after mixing evenly, heat to 50°C, remove the solvent, dry, then heat up to 130°C, react for 60 minutes, cool to room temperature, and then pulverize to 100nm particles to obtain the modified insoluble II-type ammonium polyphosphate product. The yield was 96%.

[0046] The changes in moisture absorption, dispersibility and solubility of modified II-type APP and unmodified II-type APP were tested according to the aforementioned method, and the results are listed in Table 4, Table 5 and Table 6 respectively.

[0047] Table 4 Changes in the moisture absorption of modified II-type APP and unmodified insoluble II-type APP

[0048]

[0049] As can be seen from Table 4, the moisture absorption of the modified II-type APP changes very little with time, less than 1%, and after more than 72...

Embodiment 3

[0057] Evenly disperse 12 parts of insoluble II-type ammonium polyphosphate in 55 parts of solvent toluene, add 6 parts of polydimethylsiloxane and 3 parts of MeSi (O-N=CMeEt) under stirring 3 , after mixing evenly, heat to 60°C, remove the solvent, dry, then heat up to 160°C, react for 80 minutes, cool to room temperature, and then pulverize to 150nm particles to obtain the modified II-type insoluble ammonium polyphosphate product. The yield was 97%.

[0058] The changes in moisture absorption, dispersibility and solubility of modified II-type APP and unmodified II-type APP were respectively tested according to the aforementioned method, and the results are listed in Table 7, Table 8 and Table 9 respectively.

[0059] Table 7 Changes in the moisture absorption of modified II-type APP and unmodified insoluble II-type APP

[0060]

[0061] It can be seen from Table 7 that the moisture absorption of the modified II-type APP is almost unchanged with the extension of time, and...

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Abstract

The present invention provides a method for graft modification of insoluble ammonium polyphosphate (APP) through organosilicon, and a use of the obtained product. The method comprises: dispersing insoluble APP in a solvent, adding active organosiloxane under stirring, uniformly mixing, heating to achieve a temperature of 40-100 DEG C, removing the solvent, drying, heating to achieve a temperature of 110-220 DEG C, carrying out a reaction for 30-120 min, cooling, and crushing to obtain the modified insoluble APP finished product. According to the present invention, the graft modification product has excellent fire retardation and excellent hydrophobicity, and disadvantages of easy moisture absorption, poor compatibility and the like of the insoluble APP are overcome; the processed substrate can obtain a good fire retardation effect and a good waterproof effect, does not contain halogen and formaldehyde, and can be widely used in plastics, rubbers, textiles and other fields.

Description

technical field [0001] The invention relates to the technical field of graft modification of inorganic polymer materials, in particular to a method and application of organic silicon graft modification of insoluble ammonium polyphosphate. Background technique [0002] Ammonium polyphosphate (Ammonium Polyphosphate referred to as APP) is one of the main varieties of phosphorus nitrogen flame retardants. It is non-toxic and does not produce toxic substances when burned. It is widely used in fire extinguishing agents, fireproof coatings and polymer material flame retardants. , Intumescent flame retardants and other fields. Due to the advantages of insoluble ammonium polyphosphate containing phosphorus, high nitrogen content, good thermal stability, close to neutrality, and high flame retardant performance, this product has become a research hotspot at home and abroad. However, since ammonium polyphosphate is an inorganic compound with hydrophilicity, it will absorb moisture in...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/12C08K9/06C08K3/32
Inventor 李强林黄方千
Owner CHENGDU TEXTILE COLLEGE
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