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Preparation method of anti-melting nylon sheet based on surface structured flame retardant technology

A surface structuring and anti-droplet technology, which is applied in the field of flame retardant materials, can solve the problems that it is difficult to form a good and stable cross-linking system, it is difficult to achieve the effect of flame retardant gain, and affect the mechanical properties of the substrate, reaching the level of vertical combustion Improvement, improvement of droplet phenomenon, excellent flame retardant effect

Active Publication Date: 2022-07-05
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual application process, siloxane is directly applied in the extrusion and injection molding of nylon, and it is difficult to form a good and stable crosslinking system, so it is difficult to achieve the expected flame retardant gain effect, and further affect the mechanical properties of the substrate

Method used

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  • Preparation method of anti-melting nylon sheet based on surface structured flame retardant technology
  • Preparation method of anti-melting nylon sheet based on surface structured flame retardant technology
  • Preparation method of anti-melting nylon sheet based on surface structured flame retardant technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Dissolve 3.47g of hexachlorocyclotriphosphazene (HCCP) in 50ml of tetrahydrofuran, place in a three-necked flask and heat to 67°C, introduce nitrogen, and stir with a magnet in an oil bath; mix 0.88g of propylenediamine, 14.61g of KH550 and 7.28g of triethylamine were dissolved in 50ml of tetrahydrofuran, added to the constant pressure funnel, slowly added to the three-necked flask filled with HCCP solution at a constant speed, and after 24 hours of continuous heating, the reacted mixture was passed through the funnel Filtration to obtain a filtrate; the solution system obtained after filtration is subjected to rotary evaporation to remove most of the solvent and raw materials such as excess triethylamine, and further removes the residual solvent through a mechanical pump; the viscous yellow-green liquid after vacuum drying Dissolve in 200 ml of ethyl acetate, add saturated brine to wash and separate with water, wash with water 3 times, each time using about 150 ml of sa...

Embodiment 2

[0050] Dissolve 3.47g of hexachlorocyclotriphosphazene (HCCP) in 50ml of tetrahydrofuran, place in a three-necked flask and heat to 67°C, introduce nitrogen, and stir with a magnet in an oil bath; mix 0.88g of propylenediamine, 14.61g of KH550 and 7.28g of triethylamine were dissolved in 50ml of tetrahydrofuran, added to the constant pressure funnel, slowly added to the three-necked flask filled with HCCP solution at a constant speed, and after 24 hours of continuous heating, the reacted mixture was passed through the funnel Filtration to obtain a filtrate; the solution system obtained after filtration is subjected to rotary evaporation to remove most of the solvent and excess triethylamine and other raw materials, and further removes the residual solvent through a mechanical pump; the viscous yellow-green liquid after vacuum drying Dissolve in 200 ml of ethyl acetate, add saturated brine for washing and separation, repeat washing 3 times with about 150 ml of saturated brine ea...

Embodiment 3

[0054] Dissolve 3.47g of hexachlorocyclotriphosphazene (HCCP) in 50ml of tetrahydrofuran, place in a three-necked flask and heat to 67°C, introduce nitrogen, and stir with a magnet in an oil bath; mix 0.88g of propylenediamine, 14.61g of KH550 and 7.28g of triethylamine were dissolved in 50ml of tetrahydrofuran, added to the constant pressure funnel, slowly added to the three-necked flask filled with HCCP solution at a constant speed, and after 24 hours of continuous heating, the reacted mixture was passed through the funnel Filtration to obtain a filtrate; the solution system obtained after filtration is subjected to rotary evaporation to remove most of the solvent and excess triethylamine and other raw materials, and further removes the residual solvent through a mechanical pump; the viscous yellow-green liquid after vacuum drying Dissolve in 200 ml of ethyl acetate, add saturated brine for washing and separation, repeat washing 3 times with about 150 ml of saturated brine ea...

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Abstract

The invention relates to a preparation method of a drip-resistant nylon sheet based on surface structured flame retardant technology, and belongs to the technical field of flame retardant materials. The present invention adopts amine-activated cyclic phosphazene derivatives of grafted silicon functional groups as surface modifiers, and the preparation method of aminosiloxane-containing phosphazene compounds has become mature. The technology of the molecular structure of the fuel has been gradually improved. The invention utilizes the APESP-rich siloxane structure and forms a dense and stable phosphorus-rich and nitrogen-rich Si-O-Si cross-linked structure on the surface of the nylon sheet by means of heating and soaking. The invention further improves the stability of the surface structure and improves the gain effect on the surface structure of the nylon sheet.

Description

technical field [0001] The invention relates to a preparation method of a drip-resistant nylon sheet based on surface structured flame retardant technology, and belongs to the technical field of flame retardant materials. Background technique [0002] Nylon sheets and castings are widely used in chemical machinery, gears and parts of electronic equipment due to their good mechanical strength, stiffness, hardness, high toughness, aging resistance, and mechanical vibration damping ability. The flame retardant nylon accessories used in electronic appliances are increasing day by day, and the green flame retardant nylon has attracted more and more attention from the market. However, the excellent mechanical properties and insulation of nylon sheets are likely to be significantly affected by the introduction of flame retardants through physical blending, which limits its application scenarios. The traditional flame retardant modification technology achieves the effect of flame r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/05C08J7/06C08L77/00C08K5/3492
CPCC08J7/05C08J7/065C08J2377/00C08K5/34922
Inventor 李定华刘霖靖夏中华杨荣杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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