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Method for preparing blade of cooling fan of automobile engine

An automobile engine and cooling fan technology, applied in the field of automobile engine parts, can solve the problems of unsolved low temperature brittleness and thermal oxygen aging performance, limited use, etc., and achieve obvious toughening effect, improve low temperature toughness and heat resistance, narrow The effect of particle size distribution

Active Publication Date: 2012-09-05
临海市四通制管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the excellent properties of polypropylene, such as chemical corrosion resistance and electrical insulation, its strength, hardness, rigidity, and weather resistance are greatly improved, but the low-temperature brittleness and heat-oxidative aging resistance are still unsolved, which limits its use. The technology of special materials for automotive plastic fans with excellent comprehensive performance in China has not yet passed the test, and it is still waiting to be solved

Method used

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preparation example Construction

[0026] A preparation method for an automobile engine cooling fan blade, comprising the steps of:

[0027]1) The raw materials include the following components in parts by weight: 70-90 parts of polypropylene, 5-15 parts of ethylene-octene copolymerized elastomer POE, 0.1-0.5 parts of superfine SiO2, and 0.2-0.2 parts of silicone coupling agent 0.6 parts, 15-30 parts of alkali-free short glass fiber, 0.5-1.3 parts of β-nucleating agent, 0.1-0.5 parts of antioxidant CA, 0.1-0.5 parts of dilauryl thiodipropionate, 0.5-1.0 parts of ultraviolet absorber parts; preferred parts by weight and components are 75-85 parts of polypropylene, 8-12 parts of ethylene-octene copolymerized elastomer POE, 0.2-0.4 parts of ultrafine SiO2, 0.3-0.5 parts of organic silicon coupling agent, alkali-free 20-25 parts of short glass fiber, 0.8-1.1 part of β-nucleating agent, 0.2-0.4 part of antioxidant CA, 0.1-0.3 part of dilauryl thiodipropionate, 0.6-0.8 part of ultraviolet absorber, optimally 80 part...

Embodiment 1

[0032] The automobile engine cooling fan blade of the present invention is obtained by feeding raw materials according to the ratio of parts by weight through the above-mentioned preparation process, and the described components and parts by weight are as follows:

[0033] 70 parts of polypropylene, 5 parts of ethylene-octene copolymerized elastomer POE, 0.1 parts of superfine SiO2, 0.2 parts of organic silicon coupling agent, 15 parts of short alkali-free glass fiber, 0.5 parts of β-nucleating agent, and 0.1 parts of antioxidant CA part, 0.1 part of dilauryl thiodipropionate, and 0.5 part of ultraviolet absorber.

Embodiment 2

[0035] The automobile engine cooling fan blade of the present invention is obtained by feeding raw materials according to the ratio of parts by weight through the above-mentioned preparation process, and the described components and parts by weight are as follows:

[0036] 90 parts of polypropylene, 15 parts of ethylene-octene copolymerized elastomer POE, 0.5 parts of superfine SiO2, 0.6 parts of organic silicon coupling agent, 30 parts of alkali-free short glass fiber, 1.3 parts of β-nucleating agent, 0.5 parts of antioxidant CA , 0.5 parts of dilauryl thiodipropionate, 1.0 parts of ultraviolet absorber.

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Abstract

The invention discloses a method for preparing blade of a cooling fan of an automobile engine, and belongs to the technical field of automobile engine parts. The blade of the cooling fan is prepared from polypropylene, elastic bodies, ultrathin SiO2, organosilicone coupling reagent, alkaline-free short glass fiber, beta nucleation agent, anti-oxidization agent CA, dilauryl thiodipropionate and ultraviolet absorption agent by the steps of secondary extrusion, cooling, granulation, melting injection molding, cooling and forming, demolding and inspection. The polypropylene is used as basic resin; the beta nucleation agent controls crystallization of polypropylene; the organosilicone coupling reagent modifies the alkaline-free short glass fiber into an enhancement material; the elastic bodiesPOE and SiO2 are compounded to enhance the flexibility; the heat resistance is increased by 145 to 150 DEG C, so that the blade cannot be aged and cracked after bearing the high temperature for 750 to 1,000 hours, and the impact flexibility and the stress cracking performance are improved greatly; furthermore, the mechanical performance, the heat resistance and the anti-aging performance of the fan are improved, and the environment adaptability is improved; and moreover, the manufacturing cost, the noise and the power consumption are low; and the blade is deformed and broken difficultly.

Description

technical field [0001] The invention belongs to the technical field of automobile engine parts, and in particular relates to a preparation method of an automobile engine cooling fan blade. Background technique [0002] The working conditions of the cooling fan of the passenger car diesel engine are relatively harsh. Generally, it needs to work at -40-100 ℃, dry cold, humid heat and windy environment, and work at high speed for a long time. The requirements for the material of the fan blade are relatively strict. Rigidity should also have excellent high and low temperature impact toughness, heat resistance and thermal oxygen aging resistance to prevent deformation and cracking of the fan. Early fan blades mostly used metal materials. Because steel fan blades are easy to corrode, have low strength after corrosion, and are not easy to process, they now tend to use polymer materials and composite materials, which are light in weight, easy to process and manufacture, and relative...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08K13/04C08K7/14C08K3/36C08K5/54C08K5/372C08J3/22B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/625B29C48/875B29C48/92B29C2948/92704B29C2948/92723B29C2948/92895
Inventor 何永青马尚多黄正施明旭侯志敏
Owner 临海市四通制管有限公司
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