Organically modified nanometer zirconium phosphate coated ammonium polyphosphate and preparation method thereof

A technology of nano-zirconium phosphate and ammonium polyphosphate, which is applied in the field of flame retardants, can solve the problems of poor performance of composite materials, poor stability, poor compatibility and weather resistance, and increased particle size of APP, so as to achieve safe and non-toxic raw materials. Toxicity, easy industrial production, excellent flame retardant effect

Inactive Publication Date: 2019-08-30
WUHAN INSTITUTE OF TECHNOLOGY
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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 solve the ubiquitous stability, compatibility and weather resistance of existing ammonium polyphosphate flame retardants, as well as the significant increase in APP particle size and insufficient performance of composite materials caused by the existing coating modification method A new modification method of ammonium polyphosphate was developed

Method used

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  • Organically modified nanometer zirconium phosphate coated ammonium polyphosphate and preparation method thereof
  • Organically modified nanometer zirconium phosphate coated ammonium polyphosphate and preparation method thereof
  • Organically modified nanometer zirconium phosphate coated ammonium polyphosphate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 25g layered zirconium phosphate, 2.5g G 4,12 Place in a 500mL three-neck flask, add 200mL of ethanol, and stir the resulting mixture ultrasonically at 30°C for 5 hours, filter and wash with ethanol twice, 50mL each time, to obtain modified zirconium phosphate for later use.

[0028] Put 25g of modified zirconium phosphate and 150mL of acetonitrile in a 500mL single-necked flask, stir ultrasonically at room temperature for half an hour to fully disperse, then add 10g of KH-550 to the flask, raise the temperature to 90°C and stir for 24 hours to obtain modified zirconium phosphate Dispersions.

[0029] Add 100g of ammonium polyphosphate to the above dispersion, stir and react at 90°C for 20 hours, cool to room temperature and filter after the reaction, and dry the filter cake at 70°C for 5 hours to obtain organically modified nano-zirconium phosphate-coated ammonium polyphosphate.

Embodiment 2

[0031] 10g layered zirconium phosphate, 1.5g G 2,14Place in a 500mL three-neck flask, add 200mL of ethanol, and stir the resulting mixture ultrasonically at 35°C for 6 hours, filter and wash with ethanol twice, 50mL each time, to obtain modified zirconium phosphate for later use.

[0032] Put 10g of modified zirconium phosphate and 200mL of dioxane in a 500mL single-necked flask, stir ultrasonically at room temperature for 1 hour to fully disperse, then add 8g of KH-540 to the flask, raise the temperature to 100°C and stir for 24 hours to obtain the modified zirconium phosphate dispersion.

[0033] Add 80g of ammonium polyphosphate to the above dispersion, stir and react at 100°C for 18 hours, cool to room temperature and filter after the reaction, and dry the filter cake at 80°C for 6 hours to obtain organically modified nano-zirconium phosphate-coated ammonium polyphosphate.

Embodiment 3

[0035] 25g layered zirconium phosphate, 2.5g G 5,14 Place in a 500mL three-neck flask, add 250mL of ethanol, and stir the resulting mixture ultrasonically at 30°C for 8 hours, filter and wash with ethanol three times, 50mL each time, to obtain modified zirconium phosphate for use.

[0036] Put 20g of modified zirconium phosphate and 200mL of acetonitrile in a 500mL single-necked flask, stir ultrasonically at room temperature for 1 hour to fully disperse, then add 10g of KH-902 to the flask, raise the temperature to 90°C and stir for 20 hours to obtain modified zirconium phosphate Dispersions.

[0037] Add 100g of ammonium polyphosphate to the above dispersion, stir and react at 90°C for 20 hours, cool to room temperature and filter after the reaction, and dry the filter cake at 70°C for 5 hours to obtain organically modified nano-zirconium phosphate-coated ammonium polyphosphate.

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Abstract

The invention relates to organically modified nanometer zirconium phosphate coated ammonium polyphosphate and a preparation method thereof. Firstly, nano layered zirconium phosphate is modified by using a quaternary ammonium salt dimeric surfactant, so that the sheet layers are expanded and peeled off as much as possible; then secondary modification is carried out on the modified zirconium phosphate by using a silane coupling agent, and then both surfaces of the modified zirconium phosphate contain hydrophobic active functional groups, so that binding force of the modified zirconium phosphatewith ammonium polyphosphate is improved, and hydrophobicity of the ammonium polyphosphate and compatibility with a high polymer substrate are enhanced; and finally, the surface of the ammonium polyphosphate is coated with the zirconium phosphate subjected to secondary modification in a solution. The method disclosed by the invention is mild in reaction condition, simple in process flow, safe and non-toxic in raw materials and convenient for industrial production, and a material prepared by compounding the prepared ammonium polyphosphate flame retardant as filler with a plastic matrix has excellent flame retardancy and mechanical performance.

Description

technical field [0001] The invention relates to the technical field of flame retardants, in particular to an organically modified nanometer ammonium polyphosphate used for fire-resistant coatings and flame-retardant polymer materials and a preparation method thereof. Background technique [0002] Flame retardant is a special additive used to reduce the combustion performance of flammable materials, and is widely used in the flame retardant processing of various polymer materials. The polymer material modified by the flame retardant can effectively prevent, delay or terminate the spread of the flame when it comes into contact with the external high-temperature flame, so as to achieve the purpose of flame retardancy and fire prevention. According to different chemical components, flame retardants can be divided into halogen flame retardants and halogen-free flame retardants. Although halogen flame retardants have obvious flame retardant effects, they will produce a lot of smok...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K3/32C08L23/12C09D5/18
CPCC08K3/32C08K9/10C08K2003/323C09D5/18C08L23/12
Inventor 张旗刘晓梁建东王成刘治田
Owner WUHAN INSTITUTE OF TECHNOLOGY
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