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Use of pekk for producing parts with low gas permeability

A technology of permeability and use, applied in household appliances, other household appliances, applications, etc., can solve problems such as polymer gas permeability, etc. that are not mentioned

Pending Publication Date: 2020-07-31
ARKEMA FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The literature also does not mention the gas permeability of these polymers

Method used

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  • Use of pekk for producing parts with low gas permeability
  • Use of pekk for producing parts with low gas permeability
  • Use of pekk for producing parts with low gas permeability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] The permeability of embodiment 1 PEKK

[0122] PEKK for gases, and especially for CO 2 and H 2 The permeability of S plays a particularly important role in petroleum applications, and PEKKs with dimensions of 100 mm x 100 mm x 2 mm were prepared accordingly by injection molding ( 7002, marketed by ARKEMA France, plate in the ratio T:I=70:30). Dimensions 100mm x 100mm x 2mm were also prepared by strip extrusion followed by machining to the desired dimensions Plate of 8002PEKK (marketed by ARKEMA France, ratio T:I=80:20).

[0123] The crystallinity of PEKK in injection molded plates was characterized by measuring the enthalpy of fusion with differential scanning calorimetry (DSC). Do the same for extruded sheets. From this, the degree of crystallinity of PEKK in injection molded and extruded plates can be obtained by comparison with the theoretical enthalpy of 100% crystallization.

[0124] Injection molded panels were then evaluated for CO under severe conditio...

Embodiment 2

[0132] The permeability of embodiment 2 (contrast) PEEK

[0133] In order to compare the properties of PEKK and PEEK, Example 1 was repeated, this time using a PEEK injection molded plate (450G, sold by VICTREX) with a thickness of 2 mm.

[0134] As above for CO 2 As stated, the H 2 S permeability was evaluated but using injection molded plates of PEEK (450G, sold by VICTREX) with a thickness of 0.5mm (subsequently machined into the form of 70mm discs) and at a pressure of 15 bar.

[0135] The results are summarized in Tables 1 and 2 below.

[0136] Furthermore, disks with a diameter of 70 mm were taken from 50 μm films of 450G PEEK achieved by extrusion calendering (amorphous extrudates as well as extrudates crystallized at 205 °C for a time greater than 1 h) and used to measure the effect on CO 2 , O 2 , N 2 and CH 4 gas permeability. Measurements were performed in the permeation cell as described above, but at ambient temperature and atmospheric pressure.

[0137]...

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Abstract

The invention mainly concerns the use of PEKK in order to reduce the CO2 and H2S permeability of a part intended to come into contact with a petroleum effluent. It also concerns a pipe for transporting a petroleum effluent, comprising a layer intended to be in contact with the petroleum effluent, characterised in that said layer intended to be in contact with the petroleum effluent comprises PEKKand has CO2 permeability at 130 DEG C of less than 10-8cm3, for a thickness of 1 cm and a surface area of 1 cm<2> and per second and bar of pressure of CO2 and / or H2S permeability at 130 DEG C of lessthan 10-8cm3 for a thickness of 1 cm and a surface area of 1 cm2 and per second and bar of pressure of H2S, the quantity of CO2 and H2S being measured by GC, respectively. Finally, the invention alsorelates to several methods for producing such a pipe.

Description

technical field [0001] The present invention relates to the use of poly(ether ketone ketone) (PEKK) as a gas barrier, and in particular for the manufacture of 2 or H 2 S Use of parts with low permeability. It relates more particularly to pipelines for transporting petroleum fluids. Background technique [0002] There are many fields that require materials with low gas permeability, even under severe conditions. [0003] For example, in offshore oil extraction, the extracted hydrocarbons must be transported over long distances and under extreme conditions. This is because the pipes used may be subjected to pressures in excess of 100 bar and high temperatures of greater than 90°C or even 130°C for prolonged periods of time. During the transportation of petroleum effluents under these conditions, certain gaseous acidic compounds such as H 2 S and CO 2 Contact with metallic components can cause very costly corrosion damage. Corrosion poses a serious risk because of the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08F16L11/04F16L58/10B32B27/00B32B27/08C08G65/40
CPCB32B15/08B32B27/00B32B27/08C08G65/40F16L58/10F16L58/1009F16L58/1045F16L11/04B32B27/20B32B27/285B32B1/08B32B27/12C08G65/4012C08G2650/40C08J5/042B29C48/0015B29K2995/0067B29C63/0017B29K2071/00B29K2995/0065F16L11/14B29D23/001B29K2271/00F16L9/12B29L2023/005F16L9/147F16L58/02
Inventor P.布西B.布鲁尔C.保罗
Owner ARKEMA FRANCE SA