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Hydrophobic metal-organic framework/poly(cyclotriphosphazene-co-bisphenol AF) flame retardant and preparation method thereof

A technology of metal-organic framework and cyclotriphosphazene, which is applied in the field of flame-retardant materials, can solve the problems of large addition amount, insignificant smoke suppression effect, poor water resistance of flame retardants, etc., and achieve good thermal stability and good superhydrophobic performance , good water resistance

Inactive Publication Date: 2019-11-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hydrophobic metal-organic framework\poly(cyclotriphosphazene-co-bisphenol AF) Flame retardant and preparation method thereof

Method used

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Examples

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Effect test

Embodiment 1

[0026] A hydrophobic metal-organic framework\poly(cyclotriphosphazene-co-bisphenol AF) flame retardant with an average pore diameter of 2.145nm and a pore volume of 0.304mL·g -1 , with an initial decomposition temperature of 384°C, a maximum thermal decomposition rate of 455°C, and a residue content of 36.4% at 800°C. A white powdered flame retardant with a core-shell structure.

[0027] A method for preparing a hydrophobic metal-organic framework\poly(cyclotriphosphazene-co-bisphenol AF) flame retardant, the specific steps are as follows:

[0028] Step 1. Weigh 2.08g (7.15mmol) cobalt nitrate hexahydrate, 0.61g (2.04mmol) zinc nitrate hexahydrate, 0.30g (1.02mmol) nickel nitrate hexahydrate, 2.52g at a molar ratio of 7:2:1:30 (30.64 mmol) 2-methylimidazole. Mix cobalt nitrate hexahydrate, zinc nitrate hexahydrate and nickel nitrate hexahydrate, dissolve in 300mL methanol, and record as solution B; dissolve 2-methylimidazole in 300mL methanol, record as solution C. Put solu...

Embodiment 2

[0034] A method for preparing a hydrophobic metal-organic framework\poly(cyclotriphosphazene-co-bisphenol AF) flame retardant, the specific steps are as follows:

[0035]Step 1. Weigh 2.22g (7.63mmol) cobalt nitrate hexahydrate, 0.65g (2.18mmol) zinc nitrate hexahydrate, 0.32g (1.09mmol) nickel nitrate hexahydrate, 3.13g at a molar ratio of 7:2:1:35 (38.15 mmol) 2-methylimidazole. Mix cobalt nitrate hexahydrate, zinc nitrate hexahydrate and nickel nitrate hexahydrate, dissolve in 300mL methanol, and record as solution B; dissolve 2-methylimidazole in 300mL methanol, record as solution C. Put solution B and solution C in an ultrasonic water bath, ultrasonically disperse at room temperature for 20 minutes, pour solution C into solution B, transfer to a centrifuge tube after standing for 24 hours, and centrifuge at a speed of 5000 rad / min. After the centrifuged product was washed 3 times with methanol, it was transferred to a vacuum oven and dried at 80°C for 6 hours to obtain a...

Embodiment 3

[0041] A method for preparing a hydrophobic metal-organic framework\poly(cyclotriphosphazene-co-bisphenol AF) flame retardant, the specific steps are as follows:

[0042] Step 1. Weigh 2.04g (7.01mmol) cobalt nitrate hexahydrate, 0.59g (2.00mmol) zinc nitrate hexahydrate, 0.29g (1.00mmol) nickel nitrate hexahydrate, 3.29g at a molar ratio of 7:2:1:40 (40.06 mmol) 2-methylimidazole. Mix cobalt nitrate hexahydrate, zinc nitrate hexahydrate and nickel nitrate hexahydrate, dissolve in 300mL acetone, and record as solution B; dissolve 2-methylimidazole in 300mL acetone, record as solution C. Put solution B and solution C in an ultrasonic water bath, ultrasonically disperse at room temperature for 20 minutes, pour solution C into solution B, transfer to a centrifuge tube after standing for 24 hours, and centrifuge at a speed of 5000 rad / min. After the centrifuged product was washed 3 times with acetone, it was transferred to a vacuum oven and dried at 80°C for 6 hours to obtain a p...

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Abstract

The invention relates to a hydrophobic metal-organic framework / poly(cyclotriphosphazene-co-bisphenol AF) flame retardant and a preparation method thereof, and belongs to the technical field of flame retardant materials. The preparation method comprises: preparing a metal-organic framework ZIF-B from cobalt nitrate hexahydrate, zinc nitrate hexahydrate, nickel nitrate hexahydrate and 2-methylimidazole; and introducing the ZIF-B into the reaction of hexachlorocyclotriphosphazene, bisphenol AF and an acid binding agent, and participating into heterogeneous nucleation to prepare a flame retardant.According to the present invention, the flame retardant has an initial decomposition temperature of 382+ / -3 DEG C, a maximum thermal decomposition rate of more than 450 DEG C, and a residue amount ofmore than 35% at a temperature of 800 DEG C, has good thermal stability, is rich in a large number of fluorine atoms on the surface, has a water contact angle of more than 140 DEG C, has good superhydrophobic performance, and further has good effects of water resistance, flame retardancy, and smoke suppression in the application in flame retardant polypropylene, polycarbonate and epoxy resins.

Description

technical field [0001] The invention relates to a hydrophobic metal-organic framework / poly(cyclotriphosphazene-co-bisphenol AF) flame retardant and a preparation method thereof, belonging to the technical field of flame-retardant materials. Background technique [0002] Since the beginning of the 21st century, with the rapid development of science and technology, various materials have been widely used in people's production and life, among which polymer materials have become important application materials due to their excellent comprehensive properties. However, most polymer materials are flammable and combustible materials. The oxygen index of polymer materials without flame retardant treatment is generally lower than 21%, which can easily lead to fires. When the polymer material is burned, it will release toxic gas, accompanied by a large amount of thick smoke, causing heavy casualties and serious economic losses to the society. Therefore, the active development and res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L87/00C08L85/02C08L23/12C08L69/00C08L63/00
CPCC08L23/12C08L63/00C08L69/00C08L85/02C08L87/00C08L2201/02C08L2205/03
Inventor 刘吉平宋昆朋刘晓波王银杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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