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Laminates of fluoroelastomer and heat-resistant acrylate elastomer

A technology of acrylate and polyacrylate, which is applied in the direction of lamination, layered products, lamination devices, etc., and can solve problems such as limited use

Inactive Publication Date: 2015-08-26
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modest high temperature resistance of the polyacrylate elastomer layer can limit the use of such laminates in high temperature environments

Method used

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  • Laminates of fluoroelastomer and heat-resistant acrylate elastomer
  • Laminates of fluoroelastomer and heat-resistant acrylate elastomer
  • Laminates of fluoroelastomer and heat-resistant acrylate elastomer

Examples

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example 1

[0133] Blend B-1 comprising 45% by weight of polyamide PA-1 and 55% by weight of polyacrylate copolymer A-1 was prepared as follows. Polyamide is metered by a reducing weight feeder to 43mm with twelve barrel sections In the first barrel section of the co-rotating twin-screw extruder, the twin-screw extruder was operated at a screw speed of 250 rpm. Simultaneously, the acrylate copolymer is metered into the fourth section of the extruder via a specially configured extruder and a melt pump for precise feed rates. The melt temperature of the polyamide / acrylate copolymer blend reaches about 280°C. After leaving the twelfth barrel section, the resulting polyamide-filled acrylate copolymer was pelletized and cooled to 25°C before further processing. B-1 was found to have a green strength of 0.5 MPa.

[0134] Table 1 shows the formulation and cure response for polyacrylate copolymer curable compounds CA-1 and CA-2. CA-1 is a conventional polyacrylate compound and relies solely o...

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Abstract

Disclosed herein is a laminate structure comprising a layer of curable fluoroelastomer composition and a layer of a polyamide-filled curable polyacrylate elastomer composition. A process for manufacturing such a laminate is also disclosed.

Description

technical field [0001] The present invention relates to laminates comprising a fluoroelastomer layer and a thermally stable acrylate elastomer layer. Background technique [0002] Fluoroelastomers are well known for their excellent resistance to hot air aging, and resistance to penetration and swelling of fuels such as gasoline, diesel and biodiesel. The main disadvantage of fluoroelastomers is their high cost of use. [0003] Polyacrylate elastomers have moderate resistance to hot air aging and fuel, but have a lower cost of use than fluoroelastomers. Accordingly, it is known to combine fluoroelastomer layers and polyacrylate elastomer layers in laminate structures such that the fluoroelastomer layer is in contact with high temperature environments and / or fuels, while the polyacrylate elastomer layer provides mechanical strength to the article . Such configurations are particularly useful for automotive hoses. However, the modest high temperature resistance of the polya...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B25/04B32B25/14B32B1/08B32B25/08B32B27/34
CPCB32B2307/306B32B25/14B32B2307/51B32B2270/00B32B2307/714B32B2250/248B32B1/08B32B7/12B32B27/34B32B25/08B32B2597/00B32B25/042Y10T428/3154B32B27/08B32B37/14B32B38/0036B32B38/0012B29C66/712B32B27/322B32B27/308B32B2307/54B32B2333/08B32B2327/12B32B2377/00B29K2027/16B29K2077/00B29K2033/08B29L2023/005
Inventor W.布劳勒
Owner EI DU PONT DE NEMOURS & CO