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Halogen-free fire-retardant polyphenyl ether compound and method for preparing same

A technology of compound and polyphenylene ether, which is applied in the field of high toughness, environment-friendly flame retardant polyphenylene ether compound and its preparation, high flow, halogen-free flame retardant polyphenylene ether compound and its preparation field, can solve the lack of fluidity , Flame retardant performance decline and other problems, to achieve the effect of preventing dust, improving fluidity and excellent flame retardant performance

Inactive Publication Date: 2012-05-09
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main difficulty of injection molding polyphenylene ether thin-walled parts is insufficient fluidity, and the introduction of a large amount of flow modifier will inevitably lead to further decline in flame retardancy

Method used

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  • Halogen-free fire-retardant polyphenyl ether compound and method for preparing same
  • Halogen-free fire-retardant polyphenyl ether compound and method for preparing same
  • Halogen-free fire-retardant polyphenyl ether compound and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take polyphenylene ether resin, polystyrene resin, flame retardant, toughening agent, antioxidant, and blend all raw materials according to the following composition and mass percentage:

[0028] 70 parts by weight of polyphenylene ether

[0029] 10 parts by weight of polystyrene

[0030] 10 parts by weight of diphenylisodecyl phosphate

[0031] 5 parts by weight of polyphenylmethylsiloxane

[0032]SEBS 20 parts by weight

[0033] Antioxidant 1010 0.2 parts by weight

[0034] Antioxidant 168 0.2 parts by weight

[0035] Put all the above-mentioned raw materials into the mixer and mix them evenly, and then extrude and granulate through the twin-screw extruder. , 278°C, 275°C, 272°C, 270°C, 268°C, 270°C, 272°C, the screw speed is 200-240r / min. After the material is extruded, it is water-cooled, pelletized, dried, and then injection-molded to obtain a test sample. The injection molding temperature is 260-280°C, and the injection molding pressure is 60-80MPa. The me...

Embodiment 2

[0037] Take polyphenylene ether resin, polystyrene resin, flame retardant, toughening agent, antioxidant, and blend all raw materials according to the following composition and mass percentage:

[0038] 67 parts by weight of polyphenylene ether

[0039] 20 parts by weight of polystyrene

[0040] 10 parts by weight of diphenylisodecyl phosphate

[0041] 5 parts by weight of polyphenylmethylsiloxane

[0042] SEBS 13 parts by weight

[0043] Antioxidant 1010 0.2 parts by weight

[0044] Antioxidant 168 0.2 parts by weight

[0045] Put all the above-mentioned raw materials into the mixer and mix them evenly, and then extrude and granulate through the twin-screw extruder. , 278°C, 275°C, 272°C, 270°C, 268°C, 270°C, 272°C, the screw speed is 200-240r / min. After the material is extruded, it is water-cooled, pelletized, dried, and then injection-molded to obtain a test sample. The injection temperature is 260-280°C, and the injection pressure is 60-80MPa. The mechanical proper...

Embodiment 3

[0047] Take polyphenylene ether resin, polystyrene resin, flame retardant, toughening agent, antioxidant, and blend all raw materials according to the following composition and mass percentage:

[0048] 72 parts by weight of polyphenylene ether

[0049] Polystyrene 18 parts by weight

[0050] 10 parts by weight of diphenylisodecyl phosphate

[0051] 5 parts by weight of polyphenylmethylsiloxane

[0052] SEBS-g-MAH 10 parts by weight

[0053] Antioxidant 1010 0.2 parts by weight

[0054] Antioxidant 168 0.2 parts by weight

[0055] Put all the above-mentioned raw materials into the mixer and mix them evenly, and then extrude and granulate through the twin-screw extruder. , 278°C, 275°C, 272°C, 270°C, 268°C, 270°C, 272°C, the screw speed is 200-240r / min. After the material is extruded, it is water-cooled, pelletized, dried, and then injection-molded to obtain a test sample. The injection temperature is 270-300°C, and the injection pressure is 70-100MPa. The mechanical pr...

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Abstract

The invention discloses a halogen-free fire-retardant polyphenyl ether compound and a method for preparing the same, and belongs to the field of macromolecular materials and formation processing of macromolecular materials. The halogen-free fire-retardant polyphenyl ether compound comprises the following components in percentage by weight: 50 to 80 percent of polyphenyl ether resin, 10 to 30 percent of polystyrene resin and 5 to 25 percent of toughening agent, a fire retardant and an antioxidant; the previous three components account for 100 percent of the weight of the halogen-free fire-retardant polyphenyl ether compound; and the amount of the fire retardant is 5 to 20 percent based on the total weight of the three kinds of components, and the amount of the antioxidant is 0.1 to 0.5 percent based on the total weight of the three kinds of components. The preparation method comprises the following steps of: mixing all components in a ratio, performing melt blending and extrusion of the mixed materials in a double-screw extruder to obtain compound melt, and performing bracing cooling, granulation, screening and drying of the extruded compound melt to obtain the finished product. For the compound of the invention, the melt index reaches over 30g / 10min(280 DEG C, 5kg force), the injection formation of the thin wall spline, which is 0.8mm in thickness, is realized, and the fire retardant performance reaches the UL94V-0 grade and no dropping atmosphere occurs.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant polyphenylene ether compound and a preparation method thereof, in particular to a high-fluidity, high-toughness, environment-friendly flame-retardant polyphenylene ether compound and a preparation method thereof, belonging to polymer materials and their molding processing field. Background technique [0002] Due to its excellent mechanical properties, flame retardancy and thermodynamic properties, polyphenylene ether is used more and more widely. However, the processing performance of polyphenylene ether itself is extremely poor, and the processing temperature of pure polyphenylene ether is as high as 300 ° C, and the toughness of the product is very poor, making it difficult to use. Therefore, the commonly used polyphenylene ethers are alloys, such as polyphenylene ether / polystyrene, polyphenylene ether / polyphenylene sulfide, polyphenylene ether / nylon 6 alloy, etc. After the alloy is formed, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/12C08L25/06C08L83/04C08L53/02C08L51/06C08K5/521C08K5/523B29C47/92B29B9/06B29C48/92
CPCB29C48/04B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 汪晓东林士文武德珍
Owner BEIJING UNIV OF CHEM TECH
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