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A conductive flame retardant polyphenylene ether

A technology of polyphenylene ether and polyphenylene ether resin, which can be used in microcapsule preparation, microsphere preparation and other directions, and can solve problems such as reduced flame retardancy

Active Publication Date: 2018-07-24
昆山聚威工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is rare to study the flame retardancy and conductivity of polyphenylene ether at the same time, mainly because the flame retardancy will be greatly reduced after the product is conductive.

Method used

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  • A conductive flame retardant polyphenylene ether
  • A conductive flame retardant polyphenylene ether
  • A conductive flame retardant polyphenylene ether

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The preparation method of microcapsule red phosphorus:

[0031] Weigh 4.0 g of gelatin and 4.0 g of gum arabic, respectively, and dissolve them in distilled water at 40°C. Under the condition of 4000r / min, emulsify 15g of red phosphorus in the above solution for 15min, then use 10% sodium hydroxide solution to adjust the pH to about 3.8-4.0, and recoagulate at 3000r / min for 30min. Move the system into a low-temperature environment of -20°C, lower the temperature to 0-5°C under the stirring condition of 3000r / min, adjust the pH value of the system to about 9.0, and treat with alkali for 20 minutes. After adding 4 mL of glutaraldehyde solution and stirring for 30 min, the system was transferred to a constant temperature water bath at 40°C to raise the temperature. When the temperature was constant, the curing reaction was 3 hours, and then 50 mL of a solution containing 4.0 g of tannic acid was added for curing treatment for 4.5 hours. Finally, centrifuge, wash with wat...

Embodiment 1

[0049] 100 parts by weight of polyphenylene ether powder, 90 parts by weight of maleic anhydride grafted hydrogenated styrene-butadiene-styrene copolymer and 10 parts by weight of graphite, 5 parts by weight of microcapsule red phosphorus 1,5 The nanometer aluminum hydroxide of weight part, the antioxidant of 1 weight part and the lubricant of 1 weight part add in the high-speed mixer (Yili Machinery SHR-500A of Zhangjiagang), mix evenly with low gear, pass through twin-screw extruder ( Nanjing New Times XSD-75 type) extrusion granulation, the temperature of each zone of the twin-screw extruder is set as follows:

[0050]

[0051] The twin-screw extruder screw speed is 250r / min, and the feeding speed is 50r / min, extruded into strips, cooled and pelletized to obtain a conductive and flame-resistant polyphenylene ether resin composition product.

Embodiment 2

[0053] 100 parts by weight of polyphenylene ether powder, 90 parts by weight of hydrogenated styrene-butadiene-styrene copolymer grafted with maleic anhydride, 10 parts by weight of graphite, and 5 parts by weight of microencapsulated red phosphorus 2,5 The antioxidant of 1 weight part of nano-aluminum hydroxide of weight part and the lubricant of 1 weight part add in the high-speed mixer (Zhangjiagang Yili Machinery SHR-500A), mix evenly with low-speed gear, pass through twin-screw extruder (Nanjing New era XSD-75 type) extrusion granulation, the temperature of each zone of the twin-screw extruder is set as follows:

[0054]

[0055] The twin-screw extruder screw speed is 250r / min, and the feeding speed is 50r / min, extruded into strips, cooled and pelletized to obtain a conductive and flame-resistant polyphenylene ether resin composition product.

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Abstract

The invention discloses electric-conductive and flame-retardant PPO (polyphenylene oxide). The electric-conductive and flame-retardant PPO comprises PPO, polyolefin, an electric conductive agent and a flame retardant, wherein the flame retardant comprises red phosphorus coated with microcapsules as well as nano-aluminum hydroxide, and the mass ratio of red phosphorus coated with the microcapsules to nano-aluminum hydroxide is 1:1-5. According to the electric-conductive and flame-retardant PPO, the flame retardance of PPO is affected due to addition of carbon fibers and polyolefin, the composite flame retardant is adopted, red phosphorus coated with the microcapsules can be subjected to thermal decomposition at a high temperature and forms a blocked layer with PPO, nano-aluminum hydroxide can absorb heat released during burning of polyolefin fibers, an aromatic carbonized blocked layer can be formed, and the heat released during burning can be absorbed.

Description

technical field [0001] The invention relates to a conductive and flame-resistant polyphenylene ether. Background technique [0002] Polyphenylene ether resin (referred to as PPE or PPO) is a polymer engineering plastic with a non-polar linear structure containing benzene rings in the main chain. This structure endows the material with good physical and mechanical properties, heat resistance and electrical insulation. It has low hygroscopicity, high strength, good dimensional stability, and creep resistance at high temperature is the best among all thermoplastic engineering plastics. However, pure PPE resin has a high glass transition temperature and a high melt viscosity. It needs to be processed at a high temperature of 300 ° C, and high temperature processing (330 ° C) is prone to thermal oxygen degradation, difficult processing and excessive energy consumption, and practical application promotion is limited. For this reason, components such as PP, PS, PA and elastomers a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/12C08L51/00C08K13/06C08K9/10C08K3/02C08K3/22C08K3/04C08K7/06B01J13/14B01J13/22
CPCB01J13/14B01J13/22C08K2201/001C08K2201/011C08L71/12C08L2201/02C08L51/006C08K13/06C08K9/10C08K2003/026C08K2003/2227C08K3/04
Inventor 王晶张天荣张路旻
Owner 昆山聚威工程塑料有限公司