Method for preparing polyether-ether-ketone (PEEK) pipe

A technology of polyetheretherketone pipe and polyether ether ketone, which is applied in the field of preparation of pipes with polyether ether ketone as the main raw material, can solve the problems of wasting raw materials and processing costs, high height, wasting raw materials, etc.

Active Publication Date: 2010-02-17
大连路阳科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to its unique properties, PEEK has been widely used at present, but most of the current applications are processed into the required structural parts by using rods or plates, but a lot of raw materials and processing costs are wasted, especially for sealing. The structural parts, processed into a product, will waste more than 3 times the raw materials, while the polyetheretherketone pipe avoids the waste of raw materials
[0004] At present, the polyetheretherketone pipe produced in industry has a thicker wall thickness (30mm) and a higher height (greater than 70mm), and the production process generally adopts compression molding. During the production process, the pipe will produce pores, air bubbles or insufficient density, seriously Affect its quality and limit its application

Method used

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  • Method for preparing polyether-ether-ketone (PEEK) pipe

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Experimental program
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Effect test

Embodiment 1

[0020] First get 1.8Kg of PEEK powder that has been baked for 4 hours and place it in the mold (see figure 1 ), pressurize to 15MPa on a 350-ton press, hold the pressure for 3 minutes, then remove the auxiliary feeding part, place the mold in a sintering furnace at 380°C for 8 hours, take out the mold and add it to the 350-ton press Press to 10MPa, cool for 40 minutes, demould when the temperature drops to 180°C, place the pipe in an oven at 200°C for heat treatment, and get a product of ￠260*210*80, which can be used to process bearings and gaskets , Seals, plating rings, piston rings, check rings, support rings, pump body or valve parts. Such products are mainly used to produce electroplating rings. This selective electroplating is a high-speed and economical electroplating method, which is suitable for electroplating lead frames of electronic components such as ICs, diodes, triodes, connectors, and LEDs. Due to the purposeful selective electroplating of the functional area...

Embodiment 2

[0022] First take 1.2KG of PEEK powder that has been baked for 4 hours and place it in the mold (see figure 1 ), pressurize to 20MPa on a 500-ton press, hold the pressure for 3 minutes, then remove the auxiliary feeding part, place the mold in a sintering furnace at 390°C for 8 hours, take out the mold and add it to the 500-ton press Press to 10MPa, cool for 40 minutes, demould when the temperature drops to 190°C, place the pipe in an oven at 240°C for heat treatment, and get a product with ￠200*175*80, which can be used to process bearings and gaskets , Seals, electroplated rings, piston rings, check rings, support rings, pump body or valve parts. A support ring of ￠198*178*10 can be produced with the blank of this specification.

Embodiment 3

[0024] First take 2KG of PEEK modified powder (PEEK+graphite+molybdenum disulfide+glass fiber+PTFE) that has been baked for 4 hours, and place it in the mold (see figure 1 ), pressurize to 18MPa on a 500-ton press, hold the pressure for 3 minutes, then remove the auxiliary feeding part, place the mold in a sintering furnace at 390°C for 10 hours, take out the mold and add it to the 500-ton press Press to 10MPa, cool for 40 minutes, demould when the temperature drops to 200°C, place the pipe in an oven at 260°C for heat treatment, and get a product with ￠260*210*85, which can be used to process bearings and gaskets , Seals, piston rings, check rings, support rings, pump body or valve parts.

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Abstract

The invention relates to a method for preparing a polyether-ether-ketone (PEEK) pipe. The method comprises the following steps: coldly pressing and sintering PEEK or modified PEEK as a main raw material in a die; carrying out hot press and demolding for a period of time; and finally carrying out hot processing on the pipe in an oven. The method is simple, is easy to control the production condition and has high crystallinity and size stability of a manufactured product. The invention is mainly used for processing a bearing, a gasket, a seal element, an electroplating ring, a piston ring, a check ring, a support ring, a pump body or a valve part.

Description

technical field [0001] The invention belongs to the field of engineering plastic pipes and their preparation, in particular to a method for preparing pipes with polyether ether ketone as the main raw material. Background technique [0002] Polyetheretherketone (PEEK) is a high-performance polymer with unique properties that make it ideal for the most demanding applications of today and tomorrow. As an alternative to metals, composites, and other polymers, PEEK is an engineering solution due to its superior combination of properties. PEEK has many excellent properties such as high temperature resistance, abrasion resistance, chemical corrosion resistance, hydrolysis resistance, insulation, excellent strength and toughness, stability, fire resistance and non-toxic properties. [0003] Due to its unique properties, PEEK has been widely used at present, but most of the current applications are processed into the required structural parts by using rods or plates, but a lot of ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/02B29C43/58B29C71/02B29K71/00B29L23/00
Inventor 吴立豪李彦廷
Owner 大连路阳科技开发有限公司
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