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Synthesis of novel phosphorus-silicon synergistic flame retardant applied to polyester

A new technology of phosphorus-silicon synergistic flame retardant, applied in the field of flame retardants, can solve problems such as flame retardant performance limitation, and achieve the effect of durable flame retardant performance, improved processing performance, and eco-friendly flame retardant performance.

Inactive Publication Date: 2011-09-14
赵争艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silicon-based flame retardant is a new generation of non-halogen carbon-forming flame retardants that are eco-friendly and anti-melting, which can not only improve the processing performance and heat resistance of the substrate, but also have a very good recycling effect for flame retardant materials. Excellent, but because the molecular structure does not contain phosphorus, an important flame retardant element, its flame retardant performance is limited

Method used

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  • Synthesis of novel phosphorus-silicon synergistic flame retardant applied to polyester
  • Synthesis of novel phosphorus-silicon synergistic flame retardant applied to polyester
  • Synthesis of novel phosphorus-silicon synergistic flame retardant applied to polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 0.05mol of DOPO into a three-necked flask, add 10ml of chloroform as a solvent, place it in an oil bath at 75°C and pass nitrogen gas, after DOPO is completely dissolved in chloroform, add 0.14g of catalyst azobisisobutyronitrile (AIBN) , began to drop 0.05mol of VMDES, reacted for 20h to obtain a light yellow liquid, added 20ml of NaOH solution (4wt%) to the product, and reacted at 60°C for 2h to obtain a light yellow viscous object, which was added to hydrochloric acid And to neutral, that is the target product DOPO-Si.

Embodiment 2

[0021] Add 0.075mol of DOPO into a three-necked flask, add 10ml of chloroform as a solvent, place it in an oil bath at 75°C and pass nitrogen gas, after DOPO is completely dissolved in chloroform, add 0.14g of catalyst azobisisobutyronitrile (AIBN) , began to drop 0.05mol of VMDES, reacted for 20h to obtain a light yellow liquid, added 20ml of NaOH solution (4wt%) to the product, and reacted at 60°C for 2h to obtain a light yellow viscous object, which was added to hydrochloric acid And to neutral, that is the target product DOPO-Si.

Embodiment 3

[0023] Add 0.1mol of DOPO into a three-necked flask, add 10ml of chloroform as a solvent, place it in an oil bath at 75°C and pass nitrogen gas, after DOPO is completely dissolved in chloroform, add 0.14g of catalyst azobisisobutyronitrile (AIBN) , began to drop 0.05mol of VMDES, reacted for 20h to obtain a light yellow liquid, added 20ml of NaOH solution (4wt%) to the product, and reacted at 60°C for 2h to obtain a light yellow viscous object, which was added to hydrochloric acid And to neutral, that is the target product DOPO-Si.

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Abstract

The invention discloses synthesis of a novel phosphorus-silicon synergistic flame retardant applied to polyester. The synthesis is characterized in that: the novel phosphorus-silicon synergistic flame retardant, i.e., [(6-oxo-6-hydro-dibenzo-(c,e)(1,2)-oxaphosphorinane -6-ketone)-ethyl]-siloxane (DOPO-Si), which has high flame resistance and molten drip resistance is synthesized from DOPO and siloxane serving as raw materials. The synthesized phosphorus-silicon synergistic flame retardant has the advantages of stable chemical property, good flame retardancy effect, simpler and more convenient synthesis method, higher economic efficiency and better market prospect.

Description

technical field [0001] The invention relates to a flame retardant, in particular to a novel phosphorus-silicon synergistic flame retardant applied to polyester, and the invention also relates to a synthesis method of the phosphorus-silicon synergistic flame retardant. Background technique [0002] At present, phosphorus-based flame retardants are commonly used to improve the flame retardancy of polyester. It has excellent flame retardancy, low toxicity, and low smoke, but its thermal stability and droplet resistance are poor. 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) is a new type of flame retardant intermediate, and the flame retardant synthesized by DOPO and its derivatives has halogen-free, Smoke, non-toxic, non-migration, long-lasting flame retardant properties, etc., can be used in various polymer materials such as linear polyester, polyamide, epoxy resin, polyurethane, etc. to improve their flame retardant and thermal properties. In foreign countries, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/30C08L67/00C08L83/08
Inventor 赵争艳
Owner 赵争艳
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