Preparation method and application of polyphosphazene polymer modified halloysite nanotube composite material with different coating thicknesses

A technology of halloysite nanotubes and composite materials, which is applied in the field of preparation of polyphosphazene polymer modified halloysite nanotube composite materials, can solve the problems of reduced mechanical properties, flammability, poor fire resistance, etc., and achieve quality reduction Effects related to energy transfer, smoke reduction, and improved thermodynamic performance

Active Publication Date: 2019-12-20
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, polymer materials have disadvantages such as poor fire resistance and flammability in practical applications, and there are often problems such as the improvement of flame retardancy accompanied by the reduction of mechanical properties.

Method used

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  • Preparation method and application of polyphosphazene polymer modified halloysite nanotube composite material with different coating thicknesses
  • Preparation method and application of polyphosphazene polymer modified halloysite nanotube composite material with different coating thicknesses
  • Preparation method and application of polyphosphazene polymer modified halloysite nanotube composite material with different coating thicknesses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] HNT@PZM 0104 Preparation: place 0.1g-0.2g halloysite nanotubes in 50mL-100mL analytically pure acetonitrile solvent, perform ultrasonic dispersion in an ultrasonic machine with an ultrasonic power of 90w for 30 minutes, add 0.03mol-0.06mol to the solution in turn Stir the two-terminal amine substance and 2mL-6mL triethylamine; ②Slowly drip into the above solution a certain concentration of hexachlorocyclotriphosphazene in acetonitrile solution (0.01g / mL-0.03g / mL), Stirring at -80℃ for condensation polymerization reaction for 6-24h; ③The above reaction product was centrifuged and washed with anhydrous ethanol for many times, and vacuum dried at 40-80℃ to obtain a light yellow solid with constant weight. The thickness of the polyphosphazene polymer coating thickness is 3-15nm, that is, as figure 1 with figure 2 HNT@PZM shown 0104 .

Embodiment 2

[0034] HNT@PZM 0112 Preparation: Place 0.1g-0.2g halloysite nanotubes in 50mL-100mL analytically pure acetonitrile solvent, perform ultrasonic dispersion in an ultrasonic machine with an ultrasonic power of 90w for 30 minutes, and add 0.06mol-0.12 to the solution in sequence mol two-terminal amine substance and 2mL-6mL triethylamine are stirred; ②Into the above solution, slowly drop in acetonitrile solution (0.02g / mL-0.06g / mL) with a certain concentration of hexachlorocyclotriphosphazene dissolved in it. Stirring at 40-80℃ to carry out condensation polymerization reaction for 6-24h; ③The above reaction product is centrifuged and washed with absolute ethanol for many times, and vacuum-dried at 40-80℃ to constant weight to obtain a light yellow solid. The layer thickness, that is, the coating thickness of the polyphosphazene polymer is 8-25nm, that is, figure 1 HNT@PZM shown 0112 .

Embodiment 3

[0036] HNT@PZM 0136 Preparation: 0.1g halloysite nanotubes are placed in analytically pure acetonitrile, ultrasonically dispersed in an ultrasonic machine with an ultrasonic power of 90w for 30 minutes, and then 0.12mol-0.24mol of double-terminal amine substance and 2mL- Stir 6mL triethylamine; ②Slowly drop a certain concentration of hexachlorocyclotriphosphazene in acetonitrile solution (0.06g / mL-0.12g / mL) into the above solution, and stir at 40-80℃ for condensation Polymerization reaction 6-24h; ③The above reaction product is washed with anhydrous ethanol for many times, and vacuum-dried at 40-80℃ to obtain a light yellow solid with constant weight. The thickness of the shell layer is the polyphosphazene polymer The coating thickness is 8-30nm, that is, as figure 1 HNT@PZM shown 0136 .

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Abstract

The invention discloses a preparation method and application of a polyphosphazene polymer modified halloysite nanotube composite material with different coating thicknesses. The method includes the following steps: (1) placing an appropriate amount of halloysite nanotubes into acetonitrile, performing ultrasonic dispersion, adding a double-terminal amine substance and triethylamine in sequence, and performing stirring; (2) slowly adding an acetonitrile solution of phosphonitrilic chloride trimer with different concentrations dropwise into the material obtained in the step (1), and performing acondensation polymerization reaction under stirring at 40-80 DEG C for 6-24 h; and (3) washing the material obtained in the step (2) by using anhydrous ethanol, and performing vacuum drying at 40-80DEG C to a constant weight to obtain a pale yellow solid, so as to obtain the composite material.

Description

Technical field [0001] The invention belongs to the technical field of flame-retardant materials, and particularly relates to a preparation method and application of a polyphosphazene polymer modified halloysite nanotube composite material with different coating thicknesses. Background technique [0002] In the new era of rapid development of materials, polymer materials, together with their excellent physical and chemical stability, corrosion resistance, and easy processing and molding, are widely used in marine diving, electronic and electrical, coating adhesives and construction. However, polymer materials have disadvantages such as poor fire resistance and flammability in practical applications, and there are often problems such as improved flame retardant properties accompanied by reduced mechanical properties. [0003] Phosphonitrile polymers are green and environmentally friendly, because the phosphorus and nitrogen on the main chain give them good flame retardant properties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K7/26C08L63/00C08L67/04
CPCC08K7/26C08K9/10C08K2201/003C08K2201/004C08K2201/011C08L2201/02C08L63/00C08L67/04
Inventor 戴李宗洪静杨杰武彤吴海洋陈婷王秀鹿振武陈国荣刁雪峰
Owner XIAMEN UNIV
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