A kind of halogen-free flame-retardant EVA composite material

A technology of composite materials and composite flame retardants, applied in the field of halogen-free flame retardant materials, can solve the problems of easy deterioration of mechanical properties of composite materials, poor processing performance, etc., achieve high limiting oxygen index, good processing performance, and good dispersion Effect

Active Publication Date: 2016-08-24
永清三利橡塑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a halogen-free flame-retardant EVA composite material to solve the problem of poor processability and easy deterioration of the composite material when the existing flame retardant is added to the EVA plastic base material while achieving the flame-retardant effect. The problem of mechanical properties

Method used

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  • A kind of halogen-free flame-retardant EVA composite material
  • A kind of halogen-free flame-retardant EVA composite material
  • A kind of halogen-free flame-retardant EVA composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0046] (1) Dissolve 3.00g (0.0086 mol) of hexachlorocyclotriphosphazene and 8.73g (0.086mol) of triethylamine in an inclined three-necked round-bottomed flask (with a condensing device) filled with 100ml of dioxane, and pass Into N 2 protection, put the round-bottomed flask into an oil bath at 80°C, and stir magnetically for 10 minutes to dissolve and mix evenly to obtain a uniform mixture; The dioxane solution of diamine was added dropwise while stirring, and the drop was completed after 2 hours. After the dropwise addition was completed, the reaction was refluxed at 80° C. for 12 hours to obtain a reaction solution;

[0047] (2) Cool the reaction solution to room temperature, let it stand until the layers are separated, filter under reduced pressure to obtain a white precipitate, first rinse with dioxane, then rinse with a large amount of deionized water, and finally put the precipitate into a vacuum oven at 80°C for drying Oven-dried for 12 h, the product hexa-dodecylamino...

Embodiment 2

[0055] (1) Dissolve 3.00g (0.0086 mol) of hexachlorocyclotriphosphazene and 8.73g (0.086mol) of triethylamine in an inclined three-necked round-bottomed flask (with a condensing device) filled with 100ml of dioxane, and pass Into N 2 protection, put the round-bottomed flask into an oil bath at 50°C, and stir magnetically for 8 minutes to dissolve and mix evenly to obtain a uniform mixture; The dioxane solution of diamine was added dropwise while stirring, and the drop was completed after 2 hours. After the dropwise addition was completed, the reaction was refluxed at 80° C. for 10 hours to obtain a reaction solution;

[0056] (2) Cool the reaction solution to room temperature, let it stand until the layers are separated, and filter under reduced pressure to obtain a white precipitate, first rinse with dioxane, then rinse with a large amount of deionized water, and finally put the precipitate into a vacuum oven at 80°C for drying After oven drying for 12 h, the product hexa-do...

Embodiment 3

[0059] (1) Dissolve 3.00g (0.0086 mol) of hexachlorocyclotriphosphazene in an inclined three-necked round-bottomed flask (with a condensing device) filled with 100ml of dioxane, and inject N 2 protection, put the round-bottomed flask into an oil bath at 80°C, and stir magnetically for 8 minutes to dissolve and mix evenly to obtain a uniform mixture; Diamine and 8.73g (0.086mol) triethylamine in dioxane solution were added dropwise while stirring, and the drop was completed after 1 hour. After the drop was completed, reflux at 75°C for 12 hours to obtain a reaction solution;

[0060] (2) Cool the reaction solution to room temperature, let it stand until the layers are separated, and filter under reduced pressure to obtain a white precipitate, first rinse with dioxane, then rinse with a large amount of deionized water, and finally put the precipitate into a vacuum oven at 80°C for drying After oven drying for 12 h, the product hexa-dodecylamino-cyclotriphosphazene was obtained w...

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Abstract

The invention discloses a halogen-free flame-retardant EVA (ethylene vinyl-acetate) composite material which comprises ethylene vinyl-acetate and a composite flame retardant in a mass ratio of 3:2. The composite flame retardant is prepared from ammonium polyphosphate, tri(1-oxo-1-phospha-2,6,7-trioxa bicycle[2,2,2]octane-4-methylene) phosphate and a fatty amine substituted phosphonitrile derivative, wherein the mass ratio of ammonium polyphosphate and tri(1-oxo-1-phospha-2,6,7-trioxa bicycle[2,2,2]octane-4-methylene) phosphate is 2:1, and the mass ratio of the fatty amine substituted phosphonitrile derivative and the mixture of ammonium polyphosphate and tri(1-oxo-1-phospha-2,6,7-trioxa bicycle[2,2,2] octane-4-methylene) phosphate is (1-15):(25-39). The composite material disclosed by the invention has good comprehensive flame retardance and mechanical properties. In the processing and preparing process, the compatibility and processibility of the composite flame retardant and EVA are good and the composite material can be widely applied as cable raw materials and the like.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant material, in particular to a halogen-free flame-retardant EVA composite material with good mechanical properties. Background technique [0002] Ethylene-vinyl acetate copolymer (EVA) itself is a relatively flammable polymer material, and its limiting oxygen index is only 17.0-19.0%. With the increase of vinyl acetate content, the limiting oxygen index increases, but the char formation rate is low. Melt droplets are produced during combustion, so flame retardant modification is required in many applications. At present, additive flame retardants are mainly used in the flame retardant treatment of ethylene-vinyl acetate copolymer at home and abroad. According to "Advanced Polymer Processing Technology" (Polymers for Advanced Technologies, 2011, 22: 379-394), among the halogen-free additive flame retardants that have been used and can be used for flame-retardant ethylene-vinyl acetate copolymers, hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K13/02C08K3/32C08K5/521C08K5/5399B29C47/92B29C48/92
CPCC07F9/65815C08K3/32C08K5/521C08K5/5399C08K2003/323C08L2201/02C08L2201/22C08L2203/202C08L23/0853
Inventor 屈红强武翠翠刘晓威徐建中
Owner 永清三利橡塑材料有限公司
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