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Automobile fuel oil conduit and method for making same

A technology for fuel oil and automobiles, applied in pipes, hoses, mechanical equipment, etc., can solve the problems of low tear resistance, poor adhesion, and low surface energy of fluororesin, and achieve enhanced adhesion and tear resistance Crack expansion ability, low cost, and short production process

Active Publication Date: 2008-12-31
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low surface energy of the fluororesin in the inner layer, the adhesion to the outer layer is poor, and the tear propagation resistance is low.

Method used

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  • Automobile fuel oil conduit and method for making same
  • Automobile fuel oil conduit and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The dosage of each component for toughening and strengthening the epoxy resin layer 1 is: 100 g of epoxy resin, 10 g of curing agent: dibutyl phthalate, and 6 g of toughening agent: nylon phenol solution.

[0041] The nylon phenol solution includes: 30 wt% phenol, 30 wt% formic acid, 30 wt% trichloroethane, and 10 wt% nylon 12 PA.

[0042] The preparation method of above-mentioned fuel oil pipe:

[0043] The fluororesin used to prepare the inner layer 3, the curing agent and the toughening agent were heated and blended at 250°C to make the first compound glue, and the epoxy resin, the nitrile rubber and the polystyrene used to prepare the outer layer 2 Vinyl chloride was heated and blended at 170°C to make the second compound glue. Add processing aid stearic acid, phenylenediamine-based anti-aging agent, reinforcing agent carbon black, vulcanizing agent sulfur, and thiazole-based vulcanization accelerator to the first combined rubber and the second combined rubber resp...

Embodiment 2

[0048] The dosage of each component for toughening and strengthening the epoxy resin layer 1 is: 100 g of epoxy resin, 30 g of curing agent: ethylenediamine, and 5 g of toughening agent: nylon phenol solution.

[0049] Wherein said nylon phenol solution includes: 40wt% phenol, 20wt% formic acid, 35wt% trichloroethane, 5wt% nylon 12 PA.

[0050] The preparation method of above-mentioned fuel oil pipe:

[0051] Heat and blend the fluorine rubber used to prepare the inner layer 3 with a curing agent and a toughening agent at 255° C. Vinyl chloride was heated and blended at 160°C to make the second compound glue. Add processing aids fatty acid esters, phenol-based anti-aging agents, reinforcing agent silica, vulcanizing agent morpholine, and thiuram-based vulcanization accelerators to the first combined rubber and the second combined rubber respectively, and then use the kneader in sequence , Banbury internal mixer and open mill to mix the first blended rubber and the second ble...

Embodiment 3

[0056] The dosage of each component for toughening and strengthening the epoxy resin layer 1 is: 100 g of epoxy resin, 55 g of curing agent: polyamide, and 7 g of toughening agent: nylon phenol solution.

[0057] Wherein said nylon phenol solution includes: 45wt% phenol, 21wt% formic acid, 25wt% trichloroethane, 9wt% nylon 12 PA.

[0058] The preparation method of above-mentioned fuel oil pipe:

[0059] The fluororesin used to prepare the inner layer 3, the curing agent and the toughening agent are heated and blended at 260°C to make the first compound glue, and the epoxy resin, the nitrile rubber and the polystyrene used to prepare the outer layer 1 Vinyl chloride was heated and blended at 165°C to make the second compound glue. Add processing aid fatty amide, diphenylamine-based anti-aging agent, reinforcing agent white carbon black, vulcanizing agent disulfide, sulfenamide-based vulcanization accelerator to the first combined rubber and the second combined rubber respectiv...

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PUM

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Abstract

The invention discloses a vehicle fuel pipe, which comprises an inner layer formed of fluorine rubber or fluorine resin and a rubber outer layer which is formed of nitrile butadiene rubber NBR and polyvinyl chloride in a mixed way, wherein, a toughly reinforced epoxy resin middle layer toughened by nylon PA is arranged between the inner and the outer layers, the outer layer is mixed with epoxy resin, and the inner layer is mixed with firming agent and toughening agent. Compared with the prior art, the vehicle fuel pipe has the following advantages that both the adhesive force and the anti-tearing expansion capacity of the inner and the outer layers are reinforced, the fuel infiltration resistance is strong, and the solvent resistance, the resistance to ozone and the heat resistance are good, thereby satisfying the requirements for environmental protection; moreover, the process is simple, the flow of production is short, and the cost is low.

Description

technical field [0001] The invention relates to an automobile fuel oil pipe, and also relates to a preparation method of the automobile fuel oil pipe. Background technique [0002] With the development of the automobile industry and the enhancement of people's awareness of environmental protection, the performance of the original fuel hose can no longer meet the ever-changing performance requirements of the car. The current fuel hose requires a high temperature resistance of 150-200 ° C and a very high requirement for oil permeability. The requirement for ozone resistance has also been increased from 50pphm to 200pphm, so the existing fuel hose must be improved to meet the requirement. [0003] In the United States, where SHED (shield cover for evaporation measurement) control has been implemented, the inner rubber layer of the hose uses fluorine rubber (FKM) or fluororesin, and the outer rubber layer uses a blend of nitrile rubber (NBR) and polyvinyl chloride (PVC) Rubber,...

Claims

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Application Information

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IPC IPC(8): F16L11/04C08L63/00B29C47/06B29C47/20B29C35/02B29B7/00B29C48/32
Inventor 张会华侯振宇王胜杰
Owner BYD CO LTD