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Polyaryletherketone resin with high thermal stability and preparation method thereof

A high thermal stability, polyaryl ether ketone technology, applied in the field of polymer materials, can solve the problems of backward thermal stability, inability to get rid of aging, product performance degradation, etc. The effect of high production efficiency

Active Publication Date: 2010-10-20
SINO HIGH CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like other general-purpose plastics, in the process of processing and long-term use in harsh environments, it still cannot get rid of the degradation caused by residual free radicals and the aging caused by crosslinking.
Therefore, with the increase of processing time, the apparent viscosity of polyaryletherketone resin will increase sharply, resulting in increased processing difficulty and decreased product performance.
At present, imported polyaryletherketone resins have basically solved this problem through certain technical means, but domestic progress in improving the thermal stability of polyaryletherketone resins still lags behind the advanced level of foreign countries

Method used

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  • Polyaryletherketone resin with high thermal stability and preparation method thereof
  • Polyaryletherketone resin with high thermal stability and preparation method thereof
  • Polyaryletherketone resin with high thermal stability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The polyaryletherketone resin used is polyetheretherketone (PEEK), and its structural formula is:

[0047]

[0048] Further, the melt index of the polyetheretherketone resin used is 21g / 10min, the amount of resin is 100 parts by weight, the heat stabilizer is phosphite antioxidant S-9228, and the addition amount is 0 parts.

[0049]Specific operation steps: first use a high-speed mixing mixer to mix polyether ether ketone resin and heat stabilizer in proportion; then send the above mixture into a twin-screw extruder through a feeder, fully melt, compound, and then extrude through the head Extrusion, cooling, granulation, and finally form a composite pellet product. The heating temperature of each section of the twin-screw extruder is: 300°C, 350°C, 355°C, 355°C, 355°C, 355°C, 355°C, 345°C; the control screw speed is: 120rpm.

[0050] The prepared composite pellets were injection molded into standard specimens according to the GB / T 1040-1992 standard, and adjusted fo...

Embodiment 2

[0053] As described in Example 1, only the amount of resin added in Example 1 is changed to 99.9 parts, and the amount of heat stabilizer added is 0.1 part. Other operations are the same as in Example 1.

[0054] The test results are: tensile strength 102MPa, elongation at break 53%, flexural strength 171MPa, flexural modulus 3602MPa; 5% thermal weight loss temperature 578°C; apparent viscosity changed from initial 400PaS to 360PaS, as figure 2 shown.

Embodiment 3

[0056] As described in Example 1, just change the amount of resin added in Example 1 to 99 parts, and the amount of heat stabilizer added is 1 part, and other operations are the same as in Example 1.

[0057] The test results are: tensile strength 112MPa, elongation at break 34%, flexural strength 118MPa, flexural modulus 4065MPa; 5% thermal weight loss temperature 577 ° C; apparent viscosity from the initial 30Pas to 23Pas, as image 3 shown.

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Abstract

The invention belongs to the technical field of high polymer material, in particular relating to polyaryletherketone resin with high thermal stability and a preparation method thereof. The polyaryletherketone resin with high thermal stability is composed of polyaryletherketone resin and a thermal stabilizer, wherein polyaryletherketone resin accounts for 95-99.99 parts by weight and the thermal stabilizer accounts for 0.01-5 parts by weight. The heat-resistant polyaryletherketone resin in the invention is prepared by adopting a melt extrusion method with a double-screw extruder; the preparation method is simple, the product quality is stable and the production efficiency is high. In the method, while improving thermal stability of the polyaryletherketone resin, the original excellent mechanical property of the polyaryletherketone resin is still retained. The product has favorable melt processing stability; the change of color is tiny after melt processing of products, and the performance is stable, thus shortening the gap between the resin and overseas products and having wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polyaryletherketone resin with relatively high thermal stability and a preparation method thereof. technical background [0002] Polyaryletherketone resin is a special engineering plastic with excellent performance, which has excellent comprehensive properties such as high heat resistance, corrosion resistance, radiation resistance, wear resistance, high strength and flame retardancy. It has been successfully used in aerospace, nuclear energy, petrochemical, automotive and other fields. However, like other general-purpose plastics, in the process of processing and long-term use in harsh environments, it still cannot get rid of the degradation caused by residual free radicals and the aging caused by crosslinking. Therefore, as the processing time increases, the apparent viscosity of the polyaryletherketone resin will increase sharply, resulting in an incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/08C08K5/523C08K5/3492C08K5/526
Inventor 王贵宾周政牟建新张淑玲姜振华周福贵吴忠文
Owner SINO HIGH CHINA
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