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Bio-based intumescent flame-retardant composite material as well as preparation method and application thereof

An intumescent flame retardant and composite material technology, which is applied in the field of flame retardant polymer materials, can solve the problems of no intumescent flame retardant and cannot be green, and achieve the effect of less organic solvent and simple preparation process.

Pending Publication Date: 2022-03-04
浙大宁波理工学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the intumescent flame retardants used today have good flame retardant effects, most of them are non-biomass, or only added with biomass materials for compounding, and there are no intumescent flame retardants made of all bio-based materials. , cannot be truly green

Method used

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  • Bio-based intumescent flame-retardant composite material as well as preparation method and application thereof
  • Bio-based intumescent flame-retardant composite material as well as preparation method and application thereof
  • Bio-based intumescent flame-retardant composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] S1. Add 7.36g of pentamethylenediamine, 30mL of organic solvent dioxane, and 10g of acid-binding agent potassium carbonate into a 250mL three-necked flask, stir mechanically (rotating speed 500rpm), and then dropwise add phosphazene containing phosphazene with a concentration of 13wt% in 30mL. In a dioxane organic solvent, the reaction was stirred for 3 h under ice-bath conditions, and then the precipitate was filtered, washed three times with deionized water, and dried in a vacuum oven at 80 ° C for 12 h to obtain a white solid of pentamethylenediaminophosphazene (HPCP).

[0031] S2. Stir 2.76g of ammonium dihydrogen phosphate, 5.76g of urea, 30g of deionized water and 3.00g of lignin at 70°C for 1h, dry at 70°C, and then cure at 170°C for 1h, then use 1mol / L hydrochloric acid The solution was soaked, filtered, washed with deionized water three times, and then vacuum-dried at 80° C. for 12 hours to obtain a black solid of phosphorylated lignin (P-Lig).

[0032] S3, dis...

Embodiment 2

[0034] S1. Add 7.36g of pentamethylenediamine, 30mL of organic solvent dioxane, and 10g of acid-binding agent potassium carbonate into a 250mL three-necked flask, stir mechanically (rotating speed 500rpm), and then dropwise add phosphazene containing phosphazene with a concentration of 13wt% in 30mL. In a dioxane organic solvent, the reaction was stirred for 3 h under ice-bath conditions, and then the precipitate was filtered, washed three times with deionized water, and dried in a vacuum oven at 80 ° C for 12 h to obtain a white solid of pentamethylenediaminophosphazene (HPCP).

[0035] S2. Stir 2.76g of ammonium dihydrogen phosphate, 5.76g of urea, 30g of deionized water and 3.00g of lignin at 70°C for 1h, dry at 70°C, and then cure at 170°C for 1h, then use 1mol / L hydrochloric acid The solution was soaked, filtered, washed with deionized water three times, and then vacuum-dried at 80° C. for 12 hours to obtain a black solid of phosphorylated lignin (P-Lig).

[0036] S3, dis...

Embodiment 3

[0038] S1. Add 7.36g of pentamethylenediamine, 30mL of organic solvent dioxane, and 10g of acid-binding agent potassium carbonate into a 250mL three-necked flask, stir mechanically (rotating speed 500rpm), and then dropwise add phosphazene containing phosphazene with a concentration of 13wt% in 30mL. In a dioxane organic solvent, the reaction was stirred for 3 h under ice-bath conditions, and then the precipitate was filtered, washed three times with deionized water, and dried in a vacuum oven at 80 ° C for 12 h to obtain a white solid of pentamethylenediaminophosphazene (HPCP).

[0039] S2. Stir 2.76g of ammonium dihydrogen phosphate, 5.76g of urea, 30g of deionized water and 3.00g of lignin at 70°C for 1h, dry at 70°C, and then cure at 170°C for 1h, then use 1mol / L hydrochloric acid The solution was soaked, filtered, washed with deionized water three times, and then vacuum-dried at 80° C. for 12 hours to obtain a black solid of phosphorylated lignin (P-Lig).

[0040]S3, disp...

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PUM

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Abstract

The invention belongs to the technical field of flame-retardant polymer materials, and relates to a bio-based intumescent flame-retardant composite material as well as a preparation method and application thereof. The bio-based intumescent flame retardant integrating an acid source, a carbon source and a gas source is prepared by taking pentamethylene diamine phosphazene as a core and phosphorylated lignin as a shell in an electrostatic adsorption layer-by-layer self-assembly mode. The main raw materials of the synthetic flame retardant disclosed by the invention are all derived from bio-based resources, the preparation process is simple, the used organic solvent is less, and the green and environment-friendly requirements are met.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polymer materials, and relates to a bio-based intumescent flame-retardant composite material and a preparation method and application thereof. Background technique [0002] Bio-based polyester is a polyester chemical product produced from crop straw, residual wood, and other natural organic waste, mainly including PET, PLA, and PBT. Due to its relatively comparable mechanical properties and environmental protection characteristics of petroleum-based polymers, it is widely used in packaging, medical and engineering materials, etc. However, most of them have certain defects. For example, PLA is extremely flammable, and its limiting oxygen index is only 19-21%. When it is used in auto parts, building materials, and electronic and electrical industries, there are certain safety hazards. A large amount of heat generates molten droplets, which pose a huge threat to people's lives and properties...

Claims

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Application Information

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IPC IPC(8): C08H7/00C08L67/04C08L97/00
CPCC08H6/00C08L67/04C08L2201/02C08L97/005
Inventor 张艳姚淼红刘灵慧方征平
Owner 浙大宁波理工学院
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