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A preparation method and product of flame-retardant micro-foamed polyphenylene ether composite material

The technology of composite material and flame retardant material is applied in the field of preparation of flame retardant micro-foamed polyphenylene ether composite material, which can solve the problems of complex formula, complex preparation process steps and high cost, and achieves simple preparation method, good repeatability, high cost and high cost. low cost effect

Active Publication Date: 2021-06-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the formula of the above-mentioned technical scheme is complicated, the cost is high, the preparation process steps are complicated, difficult to control, and the repeatability is poor, and the foaming ratio of the prepared product is low

Method used

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  • A preparation method and product of flame-retardant micro-foamed polyphenylene ether composite material
  • A preparation method and product of flame-retardant micro-foamed polyphenylene ether composite material
  • A preparation method and product of flame-retardant micro-foamed polyphenylene ether composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Get 70 parts by weight of polyphenylene ether (PPO, Bluestar Chemical Company, LXR040), 18 parts by weight of high-impact polystyrene (HIPS, BASF Chemical Company, 466F), 9 parts by weight of resorcinol bis(diphenyl Phosphate (RDP) and 3 parts by weight of aluminum hypophosphite (AP) were put into an internal mixer and mixed uniformly for 8 minutes at 260°C. Afterwards, the mixture was hot-pressed in a flat vulcanizing machine at 260°C for 10 minutes, cold-pressed for 5 minutes, and then taken out. The thickness of the polymer obtained by pressing was 1mm, and a flame-retardant material was obtained, which was recorded as PPO / HIPS-1, and its flame-retardant performance was listed as in Table 1 below.

[0036] The flame retardant material prepared in this example was placed in an autoclave for gas saturation. The saturated gas was carbon dioxide, the saturation pressure was 4 MPa, the saturation temperature was room temperature, and the saturation time was 12 hours. Aft...

Embodiment 2

[0039] Get the polyphenylene oxide (PPO) of 60 weight parts, the high-impact polystyrene (HIPS) of 28 weight parts, 9 weight parts resorcinol bis (diphenyl phosphate) (RDP), 3 weight parts hypophosphorous acid Aluminum (AP) was placed in an internal mixer and mixed uniformly for 8 minutes at a temperature of 260°C. Afterwards, the mixture was hot-pressed in a flat vulcanizing machine at 260°C for 10 minutes, cold-pressed for 5 minutes, and then taken out. The thickness of the polymer obtained by pressing was 1mm, and a flame-retardant material was obtained, which was recorded as PPO / HIPS-2, and its flame-retardant performance was listed as in Table 1 below.

[0040] The flame retardant material described in this example was placed in an autoclave for gas saturation. The saturated gas was carbon dioxide, the saturation pressure was 4 MPa, the saturation temperature was room temperature, and the saturation time was 12 hours. After the saturation equilibrium was reached, the sam...

Embodiment 3

[0044] Get the polyphenylene oxide (PPO) of 50 weight parts, the high-impact polystyrene (HIPS) of 38 weight parts, 9 weight parts resorcinol bis (diphenyl phosphate) (RDP), 3 weight parts hypophosphorous acid Aluminum (AP) was placed in an internal mixer and mixed uniformly for 8 minutes at a temperature of 260°C. Afterwards, the mixture was hot-pressed in a flat vulcanizer at 260°C for 10 minutes, cold-pressed for 5 minutes, and then taken out. The thickness of the polymer obtained by pressing was 1mm, and a flame-retardant material was obtained, which was recorded as PPO / HIPS-3, and its flame-retardant performance was listed as in Table 1 below.

[0045] The flame retardant material described in this example was placed in an autoclave for gas saturation. The saturated gas was carbon dioxide, the saturation pressure was 4 MPa, the saturation temperature was room temperature, and the saturation time was 12 hours. After the saturation equilibrium was reached, the sample was t...

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Abstract

The invention discloses a method for preparing a flame-retardant micro-foamed polyphenylene ether composite material, comprising: A, 10-90 parts by weight of polyphenylene ether, 10-90 parts by weight of high-impact polystyrene, 1-90 parts by weight Blending 50 parts by weight of an organophosphorus flame retardant with 1 to 50 parts by weight of inorganic hypophosphite to obtain a preform after mixing and hot pressing; B, placing the preform prepared in step A in an autoclave, The foaming gas is introduced, and after the preform reaches the saturation pressure, the temperature-rising foaming method is adopted for foaming to obtain a flame-retardant micro-polyphenylene ether composite material. The preparation method disclosed by the invention has the advantages of simple, safe, high-efficiency, and environmental protection; the prepared polyphenylene ether composite material has high expansion ratio and excellent flame-retardant performance.

Description

technical field [0001] The invention relates to the technical field of polymer foaming materials, in particular to a preparation method of a flame-retardant micro-foaming polyphenylene ether composite material and a product thereof. Background technique [0002] Due to its light weight, high impact resistance, high specific strength, excellent heat insulation and sound insulation and other advantages, polymer foam materials are widely used in packaging, cushioning, electronic appliances, transportation construction, medicine and other fields. Among them, in applications such as transportation construction, wire and cable, and electronic equipment, flame retardancy is very important. [0003] Polyphenylene oxide (PPO) is a high-efficiency engineering plastic with excellent performance, which has a limiting oxygen index (LOI) of about 29.8%, and can pass the V-0 grade in the UL-94 test. Although PPO has excellent properties and a competitive price, its high melt viscosity mak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/12C08L51/04C08K5/523C08K3/32C08J9/12
Inventor 翟文涛李蝶郑文革黄朋科任倩
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI