Phosphaphenanthrene polyamide flame retardant and preparation and application thereof

A technology of heterophenanthrene polyamide and flame retardant, which is applied in the field of polymers, can solve problems such as inconsistent product quality and uneven mixing, and achieve the best use effect, good thermal stability, and good flame retardancy

Active Publication Date: 2015-03-18
GUANGZHOU SHINE POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because DOPO has the characteristics of easy hydrolysis, sometimes it will be mixed unevenly, resulting in inconsistent product quality and even burying safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 90g of DOPO into a 250ml reactor, heat it to 120°C until it melts, and gradually add 60g of unsaturated polystyrene with maleic acid, fumaric acid, and ethylenediamine as the main components, with a molecular weight of 600 and an acid value of 18mgKOH / g under stirring. Amide: After the addition, keep at 130°C, react under reduced pressure at 0.1MPa for 2 hours, then raise the temperature to 140°C for 3 hours, discharge the material under heating, cool to obtain a glassy solid, and pulverize to obtain the final product. According to the GPC method, the number average molecular weight of the product is about 3100.

Embodiment 2

[0035] Add 88g DOPO into a 250ml reactor, heat it to 130°C until it melts, and gradually add 80g of unsaturated polyamide with itaconic acid and ethylenediamine as main components, molecular weight of 3500, and acid value of 15mgKOH / g under stirring; Then add 0.5g of aluminum triisopropoxide to maintain 140°C and 0.1MPa for 2h under reduced pressure, then raise the temperature to 160°C for 3h, discharge the material under heating, cool to obtain a glassy solid, and pulverize it to become the final product. According to the GPC method, the number average molecular weight of the product is about 8200.

Embodiment 3

[0037]Add 85g DOPO into a 250ml reactor, heat it to 140°C until it melts, and gradually add 90g of unsaturated polyamide with fumaric acid and propylenediamine as main components, molecular weight 7000, and acid value 8mgKOH / g under stirring; Then add 0.2g of triethylamine to maintain 140°C and 0.1MPa to react under reduced pressure for 3 hours, then raise the temperature to 180°C and react for 5 hours, discharge the material under heating, cool to obtain a glassy solid, and pulverize it to become the final product. According to the GPC method, the number average molecular weight of the product is about 14000.

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Abstract

The invention relates to a phosphaphenanthrene polyamide flame retardant and a preparation and an application thereof. The preparation method comprises the following steps: carrying out graft modification on novel unsaturated polyamide and a phosphorus-containing group; and carrying out additive reaction on 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) to prepare the polyamide flame retardant by using the reactivity of the unsaturated polyamide. The phosphaphenanthrene polyamide flame retardant has the characteristics of being halogen-free, low in smoke, low in toxicity, low in corrosion, good in fire resistance, good in processability and the like; the environmental protection index can meet the regulatory requirements of RoHS, IEC non-halogenation and Reach method of the European union; and compared with the previously known comparable DOPO derivative, the compound has a gas phase flame-retardant effect and a condensed phase flame-retardant effect, is high in efficiency, and can be applied to inflaming retarding of thermoplastic plastics and thermosetting materials.

Description

technical field [0001] The invention relates to the field of macromolecules, in particular to a phosphorus-containing heterophenanthrene polyamide flame retardant and its preparation method and application. Background technique [0002] With the wide application of polymer materials in various fields, organic polymers bring great benefits to people's production and life at the same time. There are also potential fire safety issues. The demand for fire safety makes people have higher and higher flame retardant properties of materials. In the high-end field, polymer materials are required to have high flame resistance and high physical and mechanical properties, thermal stability, environmental protection and other properties. All countries in the world are working on the research of flame retardants and flame retardant materials that can meet the demand. [0003] At present, plastic flame retardants are still mainly halogen-based, and its fatal disadvantage is that it pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/48C07F9/6574C08L67/00C08L69/00C08L77/00C08L63/00C08L61/06C08K5/5313
Inventor 韩泽明石建伟黄洁涛
Owner GUANGZHOU SHINE POLYMER TECH
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