Multi-layer oil tube for coextrusion vehicle

Abstract

A co-extruded multi-layer oil pipe for automobiles is provided, which comprises an outer layer (1) of Polyamide (PA) 612, an intermediate layer (2) of adhesive and an inner layer (3) of Polyvinylidene Fluoride (PVDF). The pipe is resistant to high temperature; the inner layer that is resistant to seepage of hydrocarbon is applicable for fuel oil with 15% below alcohol.

Description

technical field [0001] The invention relates to an automobile oil pipe, in particular to a multi-layer oil pipe for automobiles through co-extrusion. Background technique [0002] With the promotion and use of ethanol fuel in the country, the trial of methanol fuel and the advent of renewable fuels, compared with the use of standard fuel oil (fuel C), traditional single-layer polyamide 11 (or 12) or double-layer polyamide 11 (or 12) The fuel leakage performance of the pipeline is greatly reduced, which is not conducive to reducing hydrocarbon emissions (see Figure 2). At the same time, as the design of modern vehicles becomes more and more compact, the gaps between various parts are getting smaller and smaller, especially in the engine compartment, the heat radiation is getting bigger and bigger, and the requirements for the heat resistance of the fuel system are getting higher and higher. All these changes present new challenges to the materials and structures used in fuel...

AI Technical Summary

Problems solved by technology

[0002] With the promotion and use of ethanol fuel in the country, the trial of methanol fuel and the advent of renewable fuels, compared with the use of standard fuel oil (fuel C), traditional single-layer polyamide 11 (or 12) or double-layer polyamide 11 (or 12) The fuel leakage performance of the pipeline is greatly reduced, which is not conducive to reducing hydrocarbon emissions (see Figure 2)

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