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2MgO.B2O3.1.5H2O/Mg(OH)2 nano-composite flame-retardant material and in-situ preparation method thereof

A 2mgo·b2o3·1.5h2o, nano-composite technology, applied in the field of flame retardant materials, can solve problems such as deterioration of mechanical properties of materials, unsatisfactory dispersion of flame retardant particles, etc., achieve good smoke suppression effect, simple preparation method, and promote production. The effect of charcoal

Active Publication Date: 2017-06-30
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, larger flame retardant particles will not disperse ideally in the substrate, and high additions will deteriorate the mechanical properties of the material, limiting its application

Method used

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  • 2MgO.B2O3.1.5H2O/Mg(OH)2 nano-composite flame-retardant material and in-situ preparation method thereof
  • 2MgO.B2O3.1.5H2O/Mg(OH)2 nano-composite flame-retardant material and in-situ preparation method thereof
  • 2MgO.B2O3.1.5H2O/Mg(OH)2 nano-composite flame-retardant material and in-situ preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 7.69g (0.03mol) of magnesium nitrate hexahydrate, 0.81g of potassium borohydride (0.015mol), 0.80g of sodium hydroxide (0.02mol) and 20mL (1.1mol) of deionized water into the hydrothermal reaction kettle, stir and mix well , react in an oven at 220°C for 24 hours, program the temperature down to room temperature, and filter with suction. The obtained product is washed several times with deionized water and absolute ethanol respectively, and the product is dried in an oven at 65°C for 12 hours to obtain a white powder 2MgO ·B 2 o 3 1.5H 2 O / Mg(OH) 2 Nanocomposite flame retardant materials.

Embodiment 2

[0031] Add 7.69g (0.03mol) magnesium nitrate hexahydrate, 0.54g potassium borohydride (0.01mol), 0.72g sodium hydroxide (0.018mol) and 20mL (1.1mol) deionized water into the hydrothermal reaction kettle, stir and mix well , react in an oven at 180°C for 30 hours, program the temperature down to room temperature, and filter with suction. The obtained product is washed several times with deionized water and absolute ethanol respectively, and the product is dried in an oven at 65°C for 12 hours to obtain a white powder 2MgO ·B 2 o 3 1.5H 2 O / Mg(OH) 2 Nanocomposite flame retardant materials.

Embodiment 3

[0033] Add 7.69g (0.03mol) of magnesium nitrate hexahydrate, 0.97g of potassium borohydride (0.018mol), 0.96g of sodium hydroxide (0.024mol) and 20mL (1.1mol) of deionized water into the hydrothermal reaction kettle, stir and mix well , react in an oven at 240°C for 18 hours, program to cool down to room temperature, and filter with suction. The product obtained is washed several times with deionized water and absolute ethanol respectively, and the product is dried in an oven at 65°C for 12 hours to obtain a white powder 2MgO ·B 2 o 3 1.5H 2 O / Mg(OH) 2 Nanocomposite flame retardant materials.

[0034] The inventor adopts X-ray diffractometer, infrared spectrometer, scanning electron microscope and transmission electron microscope to carry out structure and morphology characterization to the samples obtained in embodiment 1, comparative example 1 and comparative example 2 respectively, the results are shown in Figure 1-7 .

[0035] Depend on figure 1 It can be seen that ...

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Abstract

The invention discloses a 2MgO.B2O3.1.5H2O / Mg(OH)2 nano-composite flame-retardant material and an in-situ preparation method thereof. Soluble salt of magnesium, potassium borohydride, sodium hydroxide and deionized water are subjected to in-situ hydrothermal reaction, so that the 2MgO.B2O3.1.5H2O / Mg(OH)2 nano-composite material can be obtained. The preparation method is simple, the obtained nano-composite material is a halogen-free efficient environment-friendly flame retardant and has good smoke suppression effects, and the flame-retardant efficiency of the nano-composite material is higher than that of a single flame retardant. By the aid of the composite flame retardant, usage of flame retardants can be reduced, the flame-retardant performance of the flame retardant can be improved, the problem of large usage of traditional flame retardants can be solved, and the composite flame retardant has a potential application prospect.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, in particular to a 2MgO·B 2 o 3 1.5H 2 O / Mg(OH) 2 A nanocomposite flame retardant material, and a method for preparing the material in situ. Background technique [0002] Flame retardants are additives used to improve the flame retardancy of materials, that is, to prevent materials from being ignited and to inhibit flame propagation. According to the composition, it can be divided into organic flame retardants and inorganic flame retardants. A single flame retardant always has certain defects in the use process, such as the frequently used inorganic flame retardants aluminum hydroxide and magnesium hydroxide, which require a large amount of filling during use. Boron-based flame retardant is one of the earliest inorganic flame retardants used, and it is also an important inorganic flame retardant with many varieties. It belongs to the additive type flame retardant. It has de...

Claims

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Application Information

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IPC IPC(8): C01B35/12C01F5/22C08K3/22C08K3/38C08L97/02B82Y30/00
CPCC01B35/126C01F5/22C01P2002/01C01P2002/72C01P2002/82C01P2002/88C01P2004/03C08K3/22C08K3/38C08K2003/222C08K2003/2224C08L2201/02C08L97/02
Inventor 刘志宏张蕾
Owner SHAANXI NORMAL UNIV