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Fuel Hose

A hose and fuel technology, applied in the direction of hoses, applications, pipes, etc., can solve the problems of increasing the thickness of the fluororesin layer, expensive hoses, low permeability, etc., to achieve excellent heat resistance, low material cost, high-rise The effect of cohesion between

Inactive Publication Date: 2012-07-18
SUMITOMO RIKO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As such fuel hoses, hoses made of fluororesin have been used conventionally, but when more stringent low fuel permeability performance is required, the thickness of the fluororesin layer has to be increased, and the hose becomes expensive. difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～15、 comparative example 1～9

[0076] Prepare the materials for the innermost layer (only Examples 12 to 15), materials for the inner layer, and materials for the outer layer shown in Tables 1 to 5 below, and heat each of the above materials from each extruder filled with them. Melt extrusion (co-extrusion), confluence into one mold, and pass this into a shaping die to produce a smooth hose with an inner diameter of 6 mm. In addition, in Table 1 - Table 5, the layer formation material is not described, and it means that formation of the said layer was not performed. In addition, in the following Tables 1 to 5, the layer forming materials containing modified SEBS and acid-modified PMMA-PBA-PMMA together with polymers such as PA9T, HDPE, and PA12 are shown in the same table. Weight ratio (wt%) Use a twin-screw kneading extruder (TEX30α manufactured by Nippon Steel Works) for uniform kneading (the inner layer material is kneaded at 260-330°C, and the outer layer material is kneaded at 200-250°C ), and the cur...

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PUM

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Abstract

A fuel hose is equipped with a tubular inner layer (1) comprising (A) below, and an outer layer (2) comprising (B) below, disposed in contact with the outer circumferential surface of the inner layer. The fuel hose satisfies the conditions of (a) or (ss) below. Consequently, it is possible to provide a fuel hose that is lightweight, has extremely low fuel permeability, is inexpensive, and has excellent interlayer adhesion, flexibility, low temperature impact properties, and heat resistance. (A) A resin composition consisting mainly of an aromatic polyamide resin. (B) A resin composition consisting mainly of a polyolefin resin and / or an aliphatic polyamide resin. (a) The resin composition (B) contains acid-modified SEBS and / or acid-modified PMMA-PBA-PMMA. (ss) The resin composition (A) contains acid-modified SEBS and / or acid-modified PMMA-PBA-PMMA, and the resin composition (B) contains amine-modified SEBS.

Description

technical field [0001] The present invention relates to a fuel hose used for transportation of fuel (gasoline, blended gasoline, diesel fuel, etc.) for automobiles and the like. Background technique [0002] In recent years, the evaporative regulation of fuel gas surrounding automobiles has become stricter, and various low-permeability fuel hoses that cope with the regulation have been studied. As such fuel hoses, hoses made of fluororesin have been used conventionally, but when more stringent low fuel permeability performance is required, the thickness of the fluororesin layer has to be increased, and the hose becomes expensive. difficulty. Therefore, as resins that are cheaper than fluororesins and have excellent low fuel permeability, aromatic polyamides such as polyphenylene sulfide resin (PPS) and polyamide 9T (PA9T / poly1,9-nonylidene terephthalamide) Aromatic polyester resins such as amide resins and polybutylene terephthalate (PBT) are attracting attention. In rece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B1/08B32B27/32B32B27/34F16L11/04
CPCB32B27/308B32B27/34B32B2307/7265B32B2250/24B32B1/08B32B27/08B32B2250/02F16L11/04B32B27/32B32B27/302B32B2262/101B32B2262/103B32B2262/106B32B2307/306B32B2307/546B32B2307/558B32B2307/732B32B2597/00B32B2605/08Y10T428/1393
Inventor 水谷幸治片山和孝笠原一人泷本依史
Owner SUMITOMO RIKO CO LTD
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