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

A technology of halloysite nanotubes and composite materials is applied in the field of preparation of polyphosphazene polymer-modified halloysite nanotube composite materials, which can solve the problems of poor fire resistance, flammability, and reduced mechanical properties, and achieves improved thermodynamics. performance, smoke reduction, mass and energy transfer reduction effects

Active Publication Date: 2021-03-30
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 thickness
  • Preparation method and application of polyphosphazene polymer modified halloysite nanotube composite material with different coating thickness
  • Preparation method and application of polyphosphazene polymer modified halloysite nanotube composite material with different coating thickness

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 for 30min in an ultrasonic machine with an ultrasonic power of 90w, and add 0.03mol-0.06mol Stir the double-terminated amine substance and 2mL-6mL triethylamine; ② Slowly drop into the above solution acetonitrile solution (0.01g / mL-0.03g / mL) dissolved with a certain concentration of hexachlorocyclotriphosphazene, at 40 Stir at -80°C for condensation polymerization for 6-24h; ③Centrifuge and wash the above-mentioned reaction product with absolute ethanol several times, and vacuum-dry it at 40-80°C until constant weight to obtain a light yellow solid. Thickness is polyphosphazene polymer coating thickness at 3-15nm, promptly gets 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 for 30min in an ultrasonic machine with an ultrasonic power of 90w, and add 0.06mol-0.12 mol double-terminal amine substance and 2mL-6mL triethylamine are stirred; ② Slowly drop into the above solution a solution of acetonitrile (0.02g / mL-0.06g / mL) with a certain concentration of hexachlorocyclotriphosphazene dissolved therein. Stir at 40-80°C for condensation polymerization for 6-24h; ③Centrifuge and wash the above-mentioned reaction product with absolute ethanol several times, and vacuum-dry it at 40-80°C until constant weight to obtain a light yellow solid, in which the shell Layer thickness is polyphosphazene polymer coating thickness at 8-25nm, promptly gets as figure 1 HNT@PZM shown 0112 .

Embodiment 3

[0036] HNT@PZM 0136 Preparation: 0.1g halloysite nanotubes were placed in analytically pure acetonitrile, ultrasonically dispersed in an ultrasonic machine with an ultrasonic power of 90w for 30min, and 0.12mol-0.24mol double-ended amine substances and 2mL- Stir with 6mL triethylamine; ②Slowly drop acetonitrile solution (0.06g / mL-0.12g / mL) dissolved with a certain concentration of hexachlorocyclotriphosphazene into the above solution, and stir at 40-80°C for condensation Polymerization reaction for 6-24 hours; ③Centrifugal wash the above reaction product with absolute ethanol for several times, and vacuum-dry it at 40-80°C until constant weight to obtain a light yellow solid, in which the thickness of the shell is the thickness of 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 in particular relates to a preparation method and application of polyphosphazene polymer-modified halloysite nanotube composite materials with different coating thicknesses. Background technique [0002] In the new era of rapid development of materials, polymer materials have excellent physical and chemical stability, corrosion resistance and easy processing and molding, and are widely used in the fields of marine diving, electronics, coatings, 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 the improvement of flame retardancy is accompanied by the decrease of mechanical properties. [0003] Phosphazene polymers are green and environmentally friendly, because the phosphorus and nitrogen on the main chain endow them with good flame retardant ...

Claims

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Application Information

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Patent Type & Authority Patents(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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