Manufacturing method of plastic fuel tank containing EVOH (Ethylene-Vinyl Alcohol Copolymer) barrier layer

A manufacturing method and fuel tank technology, applied to chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of complex molding process and large degree of freedom in modeling design of plastic fuel tanks, and achieve easy processing The control and preparation methods are simple and easy, and the effect of fewer layers

Inactive Publication Date: 2013-10-30
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (3) Large degree of freedom in shape design
The molding process of plastic fuel tanks with mult

Method used

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  • Manufacturing method of plastic fuel tank containing EVOH (Ethylene-Vinyl Alcohol Copolymer) barrier layer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] A method for manufacturing a plastic fuel tank containing an EVOH barrier layer. The polyethylene resin sheet 1 and the ethylene-vinyl alcohol copolymer film 2 are compounded by a compound machine to form a top-down structure, which is a polyethylene resin layer, an ethylene-ethylene The three-layer sheet of alcohol copolymer layer and polyethylene resin layer. The working pressure of the laminating machine is 15MPa. The three-layer sheet is fed into the compression mold of the plastic fuel tank, and the molding temperature is controlled to 150℃. Plastic fuel tank.

[0029] In this implementation, the polyethylene resin sheet used is HDPE resin (brand: Iran Petrochemical HDPE 52518), plasticized and melted at a temperature of 170-200°C, and then extruded to obtain HDPE sheet. The EVOH film pre-coated adhesive is made of Mitsui ADMERNF528H, two HDPE sheets and EVOH film are compounded by a laminating machine to form a three-layer sheet with a structure of ...

Example Embodiment

[0030] Example 2

[0031] A method for manufacturing a plastic fuel tank containing an EVOH barrier layer. A polyethylene resin sheet and an ethylene-vinyl alcohol copolymer film are compounded by a laminating machine to form a top-down structure, followed by a polyethylene resin layer and an ethylene-vinyl alcohol copolymer The three-layer plate of material layer and polyethylene resin layer, the working pressure of the laminating machine is 16MPa, the three-layer plate is fed into the pressing mold of the plastic fuel tank, the molding temperature is controlled to 160 ℃, and the plastic fuel is produced by compression molding. box.

[0032] In this implementation, the polyethylene resin sheet used is HDPE resin (brand: Fushun Ethylene HDPE 2911), plasticized and melted at a temperature of 170-200°C, and then extruded to obtain HDPE sheet. The EVOH film pre-coated adhesive is made of Mitsui ADMER AT1809, two HDPE sheets and EVOH film are compounded by a compound machine to form a...

Example Embodiment

[0033] Example 3

[0034] A method for manufacturing a plastic fuel tank containing an EVOH barrier layer. The polyethylene resin sheet 1 and the ethylene-vinyl alcohol copolymer film 2 are compounded by a compound machine to form a top-down structure, which is a polyethylene resin layer, an ethylene-ethylene The working pressure of the laminating machine is 18MPa for the three-layer sheet of alcohol copolymer layer and polyethylene resin layer, such as figure 1 Shown. The three-layer plate is fed into the compression mold of the plastic fuel tank, the molding temperature is controlled to be 150 DEG C, and the plastic fuel tank is fabricated by compression molding.

[0035] Among them, the polyethylene used is a high-density polyethylene resin, and the high-density polyethylene is extruded to produce a polyethylene resin sheet. The ethylene-vinyl alcohol copolymer film and the polyethylene resin sheet are connected by an adhesive maleic anhydride. The plastic fuel tank's pressing...

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Abstract

The invention relates to a manufacturing method of a plastic fuel tank which contains an EVOH (Ethylene-Vinyl Alcohol Copolymer) barrier layer. The manufacturing method comprises the following steps of: compounding a polyethylene resin plate and an ethylene-vinyl alcohol copolymer film into a structure which sequentially includes three-layer plates, namely a polyethylene resin layer, an ethylene-vinyl alcohol copolymer layer and a polyethylene resin layer, from top to bottom through a compound machine; delivering the three-layer plates into a pressing mould of the plastic fuel tank; controlling mould pressing temperature to 150-160 DEG C; carrying out mould pressing forming to manufacture the plastic fuel tank. Compared with the prior art, the plastic fuel tank has a good barrier property because a barrier material is added to the constructional materials of the fuel tank in a film way and is simple in structure because a compound material is small in layer number; the preparation method is simple and feasible and has lower requirement on equipment; and the processing process is easy to control.

Description

technical field [0001] The invention relates to a manufacturing method of a plastic fuel tank, in particular to a manufacturing method of a plastic fuel tank containing an EVOH barrier layer. Background technique [0002] Most of the early automobile fuel tanks were metal fuel tanks. However, due to the many defects of metal fuel tanks in terms of environmental protection and safety performance, this led to the birth of plastic fuel tanks. Plastic fuel tanks have many advantages: [0003] (1) Light weight. The relative density of plastic is only 1 / 8 to 1 / 7 of that of metal, so compared with the same volume of metal fuel tank, its weight can be reduced by 30% to 50%, thereby reducing the overall weight of the car and reducing fuel consumption. [0004] (2) Corrosion resistance. Due to the strong chemical corrosion resistance of plastic, the plastic fuel tank will not produce some impurities due to corrosion, which will not cause impurities to enter the engine through the ...

Claims

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Application Information

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IPC IPC(8): B29C51/00B32B27/08B60K15/03
Inventor 杨桂生肖玲玲孙利明姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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