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Polyethylene corrugated pipe for automobile emission flexible hose

A technology of automobile exhaust and polyethylene, which is applied in the direction of pipes/pipe joints/fittings, hoses, pipes, etc., can solve the problems of affecting service life and poor shock resistance of exhaust pipes, and achieve extended service life, high production efficiency, low cost effect

Inactive Publication Date: 2016-12-14
WUHU EVERSHINE AUTOMOTIVE COMPONENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a flexible automobile exhaust pipe to solve the problem that the existing rigid automobile exhaust pipe has poor shock resistance and affects the service life

Method used

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  • Polyethylene corrugated pipe for automobile emission flexible hose
  • Polyethylene corrugated pipe for automobile emission flexible hose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as Figure 1 to Figure 2 As shown, the present invention provides an automobile exhaust flexible pipe, which includes a first pipe 1 , a polyethylene corrugated pipe 2 communicating with the first pipe 1 and a second pipe 3 communicating with the polyethylene corrugated pipe 2 . By arranging the polyethylene corrugated pipe 2 between the first pipeline 1 and the second pipeline 3, the problem that the vibration of the exhaust pipe of the rigid vehicle is poor and affects the service life is effectively avoided due to the vibration during the running of the vehicle. .

[0026] Further, the connection between the first pipeline 1 and the polyethylene bellows 2 is provided with a first sealing sleeve 11; the connection between the second pipeline 3 and the polyethylene bellows 2 is provided with a second sealing sleeve 31; effectively preventing automobile exhaust Leakage, enhance the sealing of the car's exhaust pipe. The diameters of the first pipeline 1 and the s...

Embodiment 2

[0029] Polyethylene bellows for automotive exhaust flexible pipes, composed of 45% polyethylene, 5% bisphenol A polycarbonate, 5% polypropylene, 5% compatibilizer, 3% rigid masterbatch, 2% antioxidant, light 5% stabilizer, 5% graphene, 5% silane coupling agent, 2% 3-acetamido-5-methylisoxazole, 3% light shielding agent and 15% engineering plastics.

Embodiment 3

[0031] The processing method of polyethylene corrugated pipe for automobile exhaust flexible pipe, the steps are as follows:

[0032] 1) Mix the materials except engineering plastics (using the proportioning raw materials in Example 2) evenly, and heat to melt;

[0033] 2) Put the molten material into the twin-screw extrusion granulator, and set the processing temperature of each section of the extrusion granulator as follows: the temperature in zone 1-2 is 265°C, the temperature in zone 3-4 is 275°C, 5 The temperature in zone -6 is 285°C, the temperature in zone 7-8 is 305°C, the temperature in zone 9-10 is 310°C, the temperature of the die head is 100°C, the aspect ratio of the twin-screw is 32, the screw speed is 310 rpm, pelletize The speed is 15 times / min;

[0034] 3) Discharge, cool to room temperature, and then add engineering plastics to blend to obtain a blend;

[0035] 4) Granulate, heat and melt again, and then put it into the twin-screw extrusion granulator. The ...

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Abstract

The invention provides a polyethylene corrugated pipe for an automobile emission flexible hose. The polyethylene corrugated pipe comprises the following raw materials: 45% of polyethylene, 5% of bisphenol A polycarbonate, 5% of polypropylene, 5% of bulking agent, 3% of rigid master batch, 2% of antioxygen, 5% of light stabilizer, 5% of graphene, 5% of silane coupling agent, 2% of 3-acetamido-5-methyl isoxazole, 3% of light screener and 15% of engineering plastics. Compared with the present polyethylene corrugated pipe, the polyethylene corrugated pipe has the advantages that the ring stiffness can be increased by 20% under normal temperature condition and increased by 30% at 45-70 DEG C, the ring softness can be increased by 15% under normal temperature condition and the service life is obviously prolonged.

Description

technical field [0001] The invention relates to the technical field of the automobile industry, in particular to a polyethylene corrugated pipe for automobile exhaust flexible pipes. Background technique [0002] The automobile exhaust system mainly discharges the exhaust gas from the engine, and at the same time reduces the pollution of the exhaust gas and reduces the noise. As far as the role of the automobile exhaust pipe on the car body is concerned, it plays the role of shock absorption and noise reduction, and prolongs the life of the exhaust muffler system. The main material of the exhaust pipe is stainless steel, usually a rigid pipe. However, due to the vibration during the running of the car, the exhaust pipe of the rigid car may have poor shock resistance and affect the service life. Therefore, it is necessary to provide a flexible automobile exhaust pipe to solve the above problems. Contents of the invention [0003] The technical problem to be solved by the ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L69/00C08L23/12C08L101/00C08K13/02C08K3/04C08K5/353F16L11/11B29C47/92B29C48/92
CPCC08L23/06B29C48/92B29C2948/9259B29C2948/92704C08L2203/18C08L2205/035C08L2205/08F16L11/11C08L69/00C08L23/12C08L101/00C08K13/02C08K3/04C08K5/353
Inventor 刘华
Owner WUHU EVERSHINE AUTOMOTIVE COMPONENT
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