Transparent flame-retardant benzoxazine nanocomposite material and preparation method thereof

A nano-composite material and benzoxazine technology are applied in the field of novel functional polymer materials and their preparation, which can solve the problems of lowering the ring-opening curing temperature of benzoxazine monomers, lowering the thermal stability of polymer materials, and the like. Good thermal stability, high strength and good Young's modulus, the effect of reducing the temperature of ring-opening polymerization

Active Publication Date: 2017-10-27
四川天策聚材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the defect that organic phosphorus-containing flame retardants reduce the thermal stability of polymer materials, and at the same time consider the limitation of high polymerization temperature of benzoxazine monomers in application, the invention adopts inorganic phosphorus-containing layered nanoparticles to p-benzoxazine The flame retardant modification of the resin and the reduction of the ring-opening curing temperature of the benzoxazine monomer

Method used

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  • Transparent flame-retardant benzoxazine nanocomposite material and preparation method thereof
  • Transparent flame-retardant benzoxazine nanocomposite material and preparation method thereof
  • Transparent flame-retardant benzoxazine nanocomposite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0055] Disperse 5 parts of α-zirconium phosphate powder with a ratio of sheet layer diameter to thickness of 20 in 200 parts of acetone under 40 Hz ultrasonic conditions to obtain α-zirconium phosphate powder-acetone suspension. Weigh 16 parts of structure I monofunctional polyetheramine with a molecular weight of 1000 and disperse them in 50 parts of acetone to obtain a structure I monofunctional polyetheramine-acetone dispersion. The structure I monofunctional polyetheramine-acetone dispersion was added dropwise to the α-zirconium phosphate powder-acetone suspension within 25 minutes. After the dripping is completed, 40 Hz ultrasonic dispersion is performed for 1 hour, and the magnetic particles are stirred for 24 hours to obtain α-zirconium phosphate-structure I monofunctional polyetheramine-acetone stripping solution. Centrifuge the α-zirconium phosphate-structure I monofunctional polyetheramine-acetone stripping solution with a speed of 10,000 rpm. The α-Zirconium Phospha...

Embodiment 2

[0059] Disperse 15 parts of α-zirconium phosphate powder with a ratio of layer diameter to thickness of 5 in 500 parts of acetone under 100 Hz ultrasonic conditions to obtain α-zirconium phosphate powder-acetone suspension. Weigh 50 parts of structure III type bifunctional polyetheramine with a molecular weight of 600, and disperse them in 60 parts of acetone to obtain a structure III type bifunctional polyetheramine-acetone dispersion. The structure III bifunctional polyetheramine-acetone dispersion was added dropwise to the α-zirconium phosphate powder-acetone suspension within 60 minutes. After the dripping is completed, 100 Hz ultrasonic dispersion is performed for 1 hour, and the magnetic particles are stirred for 12 hours to obtain an α-zirconium phosphate-structure III bifunctional polyetheramine-acetone stripping solution. Centrifuge the α-zirconium phosphate-structure III type monofunctional polyetheramine-acetone stripping solution at a speed of 5000 rpm. The α-zirco...

Embodiment 3

[0062] Disperse 5 parts of α-zirconium phosphate powder with a ratio of sheet diameter to thickness of 20 in 250 parts of acetone under 40 Hz ultrasonic conditions to obtain α-zirconium phosphate powder-acetone suspension. Weigh 16 parts of structure I monofunctional polyetheramine with a molecular weight of 1000 and disperse them in 50 parts of acetone to obtain a structure I monofunctional polyetheramine-acetone dispersion. The structure I monofunctional polyetheramine-acetone dispersion was added dropwise to the α-zirconium phosphate powder-acetone suspension within 25 minutes. After the dripping is completed, 40 Hz ultrasonic dispersion is performed for 1 hour, and the magnetic particles are stirred for 18 hours to obtain α-zirconium phosphate-structure I monofunctional polyetheramine-acetone stripping solution. Centrifuge the α-zirconium phosphate-structure I monofunctional polyetheramine-acetone stripping solution with a speed of 10,000 rpm. The α-Zirconium Phosphate-Str...

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Abstract

The invention discloses a transparent flame-retardant benzoxazine nanocomposite and a preparation method thereof. The transparent flame-retardant benzoxazine nanocomposite is prepared from 75-99 parts of benzoxazine resin and 1-25 parts of ionized-state layered alpha-zirconium phosphate. The ratio of the slice layer diameter to the slice layer thickness of the ionized-state layered alpha-zirconium phosphate ranges from 50 to 1,000. According to the transparent flame-retardant benzoxazine nanocomposite, the ring opening polymerization temperature of benzoxazine monomers is reduced on the basis of guaranteeing the good overall property of the nanocomposite, meanwhile, flame retardation of the benzoxazine resin is improved, multiple properties of thermosetting resin can be optimized, and a new research thought is provided for modification of the thermosetting resin. The transparent flame-retardant benzoxazine nanocomposite can be applied to occasions with high requirements for transparency and flame retardation of the material.

Description

Technical field [0001] The invention relates to a transparent flame-retardant benzoxazine nano composite material and a preparation method thereof, and belongs to the field of novel functional polymer materials and preparation thereof. Background technique [0002] Benzoxazine (PBa) is a new type of thermosetting resin prepared by ring-opening polymerization of benzoxazine monomer (Ba) under heat or catalyst (Journal of Polymer Science Part A:Polymer Chemistry,2011,49:4213- 4220; RSC Advances, 2015, 5:47284-47293.). Benzoxazine monomers are synthesized by Mannich reaction of phenols, primary amines and paraformaldehyde or formaldehyde. By changing the structure of primary amines and phenolic compounds, different types of benzoxazine monomers can be prepared, and then benzoxazine resin materials with different performance characteristics (US7517925B2; CN101578332A) can be obtained. There is no release of small molecules during the ring-opening polymerization process, the shrinka...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/04C08K3/32C08G73/06
CPCC08G73/06C08K3/32C08K2003/328C08K2201/011C08K2201/016C08L2201/02C08L2201/10C08L79/04
Inventor 赵春霞李云涛苏皇宇
Owner 四川天策聚材科技有限公司
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