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Preparation method of high-fluidity polyphenyl ether composite material

A composite material and high fluidity technology, applied in the field of composite material manufacturing method, can solve the problems of reducing the mechanical properties and flame retardancy of PPO, and achieve the effect of expanding the scope of use and improving the fluidity and toughness.

Pending Publication Date: 2021-04-16
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the modification of PPO is mainly to add high-impact polystyrene, nylon, polyphenylene sulfide and other polymers to mix. Although it can improve the fluidity, impact strength and other properties, it also greatly reduces the mechanical properties of PPO. Flame retardancy and other properties

Method used

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  • Preparation method of high-fluidity polyphenyl ether composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a polyphenylene ether composite material with high fluidity, comprising the following steps:

[0025] Step 1: Disperse 10 parts of molybdenum carbide powder in 400 parts of water, add 30 parts of modifier dopamine, stir for 1 min at a stirring speed of 100 r / min, and remove excess water after the reaction to obtain modified molybdenum carbide;

[0026] Step 2, disperse the modified molybdenum carbide in DMF and sonicate with a probe for 15 minutes, remove excess solvent, and dry in vacuum at 80°C for 24 hours;

[0027] Step 3, get 10g step 2 gained molybdenum carbide powder, in O 3 Use UV treatment under airflow for 10 minutes, the power of UV treatment is 100W, O 3 Flow 5ml / min;

[0028] Step 4: Mix the molybdenum carbide powder obtained in Step 3 with 300 parts of polyphenylene ether particles, and use a twin-screw extruder for melt extrusion granulation. The extrusion temperature is 250° C., the screw aspect ratio is 40, and the screw speed i...

Embodiment 2

[0030] A method for preparing a polyphenylene ether composite material with high fluidity, comprising the following steps:

[0031] Step 1: Disperse 15 parts of molybdenum carbide powder in 1000 parts of water, add 50 parts of modifier dopamine, stir for 24 minutes at a stirring speed of 500 r / min, remove excess water after the reaction, and obtain modified molybdenum carbide;

[0032] Step 2, disperse the modified molybdenum carbide in DMF and sonicate with a probe for 20 minutes, remove excess solvent, and dry at 110°C for 4 hours;

[0033] Step 3, get 10g step 2 gained molybdenum carbide powder, in O 3 Use UV treatment under airflow for 15 minutes, the power of UV treatment is 1000W, O 3 Flow 30ml / min;

[0034] Step 4: Mix the molybdenum carbide powder obtained in Step 3 with 1000 parts of polyphenylene ether particles, and use a twin-screw extruder for melt extrusion granulation. The extrusion temperature is 300° C., the screw aspect ratio is 48, and the screw speed is 2...

Embodiment 3

[0036] A method for preparing a polyphenylene ether composite material with high fluidity, comprising the following steps:

[0037] Step 1: Disperse 13 parts of molybdenum carbide powder in 700 parts of water, add 40 parts of modifier dopamine, stir for 12 minutes at a stirring speed of 300 r / min, and remove excess water after the reaction to obtain modified molybdenum carbide;

[0038] Step 2, dispersing the modified molybdenum carbide in DMF and ultrasonically using a probe for 18 minutes, removing excess solvent, and drying in vacuum at 95°C for 24 hours;

[0039] Step 3, get 10g step 2 gained molybdenum carbide powder, in O 3 Use UV treatment under airflow for 13 minutes, the power of UV treatment is 500W, O 3 Flow 18ml / min;

[0040] Step 4: Mix the molybdenum carbide powder obtained in Step 3 with 650 parts of polyphenylene ether particles, and use a twin-screw extruder for melt extrusion granulation. The extrusion temperature is 275° C., the screw aspect ratio is 44, a...

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Abstract

The invention discloses a preparation method of a high-fluidity polyphenyl ether composite material, which comprises the following steps: 1, dispersing 10-15 parts of molybdenum carbide powder in 400-1000 parts of water, adding 30-50 parts of modifier, stirring the mixture, and removing excess water after the reaction is finished to obtain modified molybdenum carbide; 2, dispersing the modified molybdenum carbide in DMF and carrying out ultrasonic treatment for 15-20 minutes by using a probe, and drying the mixture; 3, processing the molybdenum carbide powder obtained in the step 2 through UV treatment for 10-15 min under ozone airflow; and 4, mixing the molybdenum carbide powder obtained in the step 3 with 300-1000 parts of polyphenyl ether particles, and carrying out melt extrusion granulation by using a twin-screw extruder. According to the method for modifying the PPO by using the ultrathin two-dimensional Mo2C crystal, the fluidity and toughness of the PPO are improved on the premise of not losing the properties such as flame retardance, strength and the like.

Description

technical field [0001] The invention relates to a method for preparing a composite material, in particular to a method for preparing a high-fluidity polyphenylene ether composite material. Background technique [0002] Polyphenylene ether, referred to as PPO, is a kind of high temperature resistant engineering plastic. Polyphenylene ether and modified polyphenylene ether have quickly developed into one of the top five engineering plastics in the world due to their excellent performance and many varieties. Well-known companies such as SABIC, Asahi Kasei, GE, and BASF have started mass production of PPO. The main products include auto parts, new energy vehicle power battery casings and brackets, high-voltage electrical accessories, electrical tool components, etc. The market prospect is very broad. . [0003] PPO has excellent physical and mechanical properties, high hardness and toughness; small creep and excellent dimensional stability. At the same time, PPO has excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/12C08K9/04C08K9/06C08K9/02C08K7/00C08K3/14
Inventor 诸昌武殷明左志芳丁志鹏
Owner YANGZHOU POLYTECHNIC INST