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Fuel management system comprising a fluoroelastomer layer having a hydrotalcite compound

A hydrotalcite compound, elastomer layer technology, applied in synthetic resin layered products, pipes, hoses, etc., can solve problems such as accelerated fuel management system expansion and deterioration

Inactive Publication Date: 2007-07-18
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under harsh conditions, i.e. high temperature and high humidity, hydrolysis products can be formed which will accelerate the expansion and deterioration of currently used fuel management systems

Method used

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  • Fuel management system comprising a fluoroelastomer layer having a hydrotalcite compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0068] All parts and percentages are by weight unless otherwise indicated.

[0069] abbreviation

[0070] Ca(OH) 2 : Calcium hydroxide, commercially available from Rhenofit CF, Rhein Chemie.

[0071] Trigonox TM 101 45B: Organic peroxide, commercially available from AKZO.

[0072] Perkalink TM 301-50D: triallyl isocyanurate supported on a silicate carrier at a ratio of 50%, commercially available from AKZO.

[0073] DIAK TM No. 8: Trimethylallyl isocyanurate, available from DuPont DowElastomers

[0074] FE-1: Fluoropolymers of tetrafluoroethylene, 1,1-difluoroethylene and hexafluoropropylene further including bromotrifluoroethylene as cure site monomer

[0075] FE-2: Fluoropolymer with cure sites, GF 300 TM , available from Dupont deNemours

[0076] MT N-990: carbon black, commercially available from Cancarb.

[0077] Biodiesel: diesel oil containing RME (rapeseed oil methyl ester) purchased from Globus, Germany.

[0078] DHT-4V TM : hydrotalcite, available from...

Embodiment 1 to 3 and comparative example C-1 to C-3

[0084] In Examples 1 to 3 and Comparative Examples C-1 to C-3, curable compositions were prepared on a two-roll mill by mixing the compounds shown in Table 1. Compounds are expressed in parts by weight per hundred parts by weight (phr) of fluoroelastomer, which units are customary in the rubber industry. The hydrotalcite contents in Examples 1 to 3 are given in Table 1, and Comparative Examples C-1 to C-3 were prepared without addition of hydrotalcite. Comparative Examples C-1 and C-3 contain 3phr of Ca(OH) 2 As an acid acceptor, Comparative Example C-2 contained 3 phr of MgO as an acid acceptor. The cured samples were tested with biodiesel with or without the addition of water at the temperatures and times shown in Table 2. The volume expansion ratios are shown in Table 2. Immersed in biodiesel or biodiesel + 5% H 2 O (Example 2) The physical properties of the cured samples were measured before and after reflux at 150°C for 504 hours in an open system, followed by drying ...

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PUM

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Abstract

The present invention provides a component of a fuel management system having a surface that in use will come into contact with fuel. The surface includes a fluoroelastomer layer. The fluoroelastomer layer comprises a hydrotalcite compound dispersed therein.

Description

technical field [0001] The present invention relates to a component of a fuel management system comprising a fluoroelastomer layer (ie, a cured fluoropolymer layer having a fluorinated backbone) and a hydrotalcite compound dispersed therein. In particular, the present invention relates to the use of hydrotalcite compounds to improve the resistance of fluoroelastomer layers in contact with diesel fuel, especially diesel fuel of biological origin. Background technique [0002] The advantages of fluoroelastomers are well known in the art and include, for example, high temperature resistance, chemical resistance including, for example, solvent, fuel and corrosion resistance, and nonflammability. Because of these advantages, fluoroelastomers have a wide range of applications, especially in materials exposed to high temperatures and / or chemicals. [0003] For example, due to their excellent fuel resistance and good barrier properties, fluoroelastomers are used in fuel management ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/26C08L27/12B32B27/28B32B1/08F16L11/04
CPCY10T428/1393F16L11/04Y10T428/31544Y10T428/139B32B1/08F16L2011/047C08K3/26
Inventor 阿莱恩·维赫斯楚埃赫福士达夫埃里克·D·黑尔
Owner 3M INNOVATIVE PROPERTIES CO