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Polyphenylene ether resin composition and method of preparing the same

A technology of polyphenylene ether resin and composition, which is applied in the field of preparation of the composition, can solve problems such as poor flexibility, achieve low hardness, reduce fluidity and impact resistance, and avoid performance reduction

Active Publication Date: 2009-02-04
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome the poor flexibility of the polyphenylene ether composition in the above-mentioned prior art, and provide a polyphenylene ether resin composition with better flexibility

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0025] The preparation method of the polyphenylene ether resin composition provided by the present invention comprises: extruding and granulating the mixture of polyphenylene ether resin and polystyrene at a temperature of 240-290° C. to obtain a mixed masterbatch; It is mixed with an elastomer and extruded and granulated at a temperature of 190-240 ° C; wherein, the elastomer is a polymer with rubber properties grafted with oxazoline groups, and the rubber properties The polymer is a block copolymer of aromatic compounds and one or two conjugated diene compounds or ethylene methacrylate grafted EPDM rubber.

[0026]According to the preparation method provided by the present invention, after the polyphenylene ether resin and polystyrene are prepared into a mixed masterbatch, the mixed masterbatch can have a relatively lower heat distortion temperature than the polyphenylene ether resin. In the subsequent resin reaction, the mixed modification with the elastomer at a lower temp...

Embodiment 1

[0032] (1) Preparation of polyphenylene ether / polystyrene (PPO / PS) mixed masterbatch

[0033] Polyphenylene ether (PPO) powder (Shanxi Ruicheng Lanxing Chemical Industry, L040, viscosity at 25°C is 0.4Pa·S) 100 parts by weight, polystyrene (PS) (Yangtze BASF HIPS 476L, resistance at 23°C) Impact strength is 11kJ / m 2 , with a melt index of 5g / 10min (200°C, 5kg)) 50 parts by weight are added to a high-speed mixer (Zhangjiagang Yili Machinery SHR-500A), mixed evenly at a high speed, and passed through a twin-screw extruder (Nanjing New Times XSD- 75 type) extrusion granulation, the temperature of each zone of the twin-screw extruder is respectively set as:

[0034] Zone 1 240-250℃ Zone 2 245-255℃ Zone 3 250-260℃

[0035] Zone 4 260-270℃ Zone 5 260-270℃ Zone 6 260-270℃

[0036] Zone 7 250-260℃ Zone 8 245-255℃ Zone 9 235-245℃

[0037] The twin-screw extruder screw speed is 250r / min, and the feeding speed is 50r / min, extruded into strips, cooled and pelletized to obtain the PPO / ...

Embodiment 2

[0046] (1) Preparation of polyphenylene ether / polystyrene (PPO / PS) mixed masterbatch

[0047] Add 50 parts by weight of polyphenylene ether (PPO) powder, 50 parts by weight of polystyrene (PS) and 0.3 parts by weight of antioxidant (B168, Ciba company) into a high-speed mixer, mix evenly at a high speed, and extrude through a twin-screw Machine extrusion granulation, the temperature of each zone of the twin-screw extruder is respectively set as:

[0048] Zone 1 240-250℃ Zone 2 245-255℃ Zone 3 250-260℃

[0049] Zone 4 260-270℃ Zone 5 260-270℃ Zone 6 260-270℃

[0050] Zone 7 250-260℃ Zone 8 245-255℃ Zone 9 235-245℃

[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 the PPO / PS mixed masterbatch.

[0052] (2) Preparation of PPO resin composition

[0053] 50 parts by weight of the PPO / PS mixed masterbatch, elastomer (polymers grafted with ethylene methacrylate and oxazoline groups on ...

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PUM

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Abstract

The invention relates to a polyphenylene oxide resin composition, which contains polyphenylene oxide resin and elastomer, wherein, the composition also contains polystyrene. The elastomer is a polymer which is grafted with bulky oxazoline on polymer with rubber characteristics; the polymer with rubber characteristics is segmented copolymer polymerized of aromatic compound with one or two conjugated vinyl compounds or ethylene propylene diene rubber grafted with ethylene methyl acrylate. The invention also relates to a preparation method of the composition. The composition of the invention has good flexibility, great tensile strength and great elongation at break under tearing strength.

Description

technical field [0001] The invention relates to a polyphenylene ether resin composition and a preparation method of the composition. Background technique [0002] Currently commonly used wire and cable covering materials are polyvinyl chloride (PVC) and ethylene-vinyl acetate copolymer (EVA) materials. Due to the increasingly higher requirements for environmental protection, the materials used to make wire and cable coverings are required to meet the environmental protection testing of ROHS (Restriction of Hazardous Substances) and must not contain halogens. . The PVC material contains a large number of halogen atoms, which will release toxic gases when burned, which will damage the environment and poison human health. In addition, the heat-resistant temperature of EVA material is very low, so it cannot adapt to the working environment with higher temperature, such as the wire covering around the car engine. [0003] Therefore, it is necessary to seek a wire and cable cov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/12C08L25/06C08K5/541C08J3/12C08L51/06C08L83/04C08L27/18C08K5/521
Inventor 吕新坤
Owner BYD CO LTD
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