Cooling fan blade of diesel engine and manufacture method thereof

A technology for cooling fans and diesel engines, applied in engine cooling, mechanical equipment, engine components, etc., can solve the problems of polypropylene mechanics and heat resistance, poor light resistance, heat, aging performance, and difficult application of engineering parts, etc. Achieve the effect of improving flow characteristics, low volatility, and overcoming the problem of easy breakage

Active Publication Date: 2011-10-12
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

Polypropylene is a general-purpose plastic with low price and large production volume, but due to its poor low-temperature impact performance, poor light resistance, heat and aging performance, it has great difficulties in the application of engineering parts
At present, a large amount of polyethylene is added to polypropylene, and the combination of EPDM and SBS, talc powder (40wt%), titanate, coupling agent, composite antioxidant, etc. are used for blending and filling modification with PP, and the second Three-component compatibilizer, glass fiber or mica filling reinforcing agent and composite antioxidant are blended and modified with PP to improve low-temperature impact performance through blending, but the mechanical and heat resistance of polypropylene are greatly reduced. The high cost brings new problems

Method used

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  • Cooling fan blade of diesel engine and manufacture method thereof
  • Cooling fan blade of diesel engine and manufacture method thereof
  • Cooling fan blade of diesel engine and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Take 70 parts of polypropylene with a melt flow rate of 1.0-3.0 g / 10 minutes, 20 parts of polyethylene with a density ≥ 0.950, 0.15 parts of hydroisomerized dewaxed base oil 5CST, and hydroisomerized dewaxed Base oil IOCST 0.18 parts, antioxidant CA 0.3 parts, 2-(2 ， -Hydroxy-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole 0.5 part, dilauryl thiodipropionate 0.3 part, diesel engine cooling fan blade was prepared by the following process:

[0030] The specific process is as follows: 1) First add the above components into the mixer and mix for 5-25 minutes, then unload after mixing evenly; The temperature in the hopper is controlled in 6 sections, the temperatures are as follows: section 1 temperature is 161-163°C, section 2 temperature is 155-159°C, section 3 temperature is 151-153°C, section 4 temperature is 151- 153°C, the temperature of the confluence zone in section 5 is 143-147°C, the temperature of the extrusion head in section 6 is 142-146°C, and the sp...

Embodiment 2

[0032] Example 2: Take 90 parts of polypropylene with a melt flow rate of 1.0-3.0 g / 10 minutes, 15 parts of polyethylene with a density ≥ 0.950, 0.20 parts of hydroisomerized dewaxed base oil 5CST, and hydroisomerized dewaxed Base oil IOCST 0.13 part, antioxidant CA part, 2-(2 ， 1.0 parts of -hydroxy-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole and 0.1 part of dilauryl thiodipropionate were used to prepare a cooling fan blade for a diesel engine. The specific preparation is as in Example 1.

Embodiment 3

[0033] Example 3: Take 75 parts of polypropylene with a melt flow rate of 1.0-3.0 g / 10 minutes, 20 parts of polyethylene with a density ≥ 0.950, 0.16 parts of hydroisomerized dewaxed base oil 5CST, and hydroisomerized dewaxed Base oil IOCST 0.16 parts, antioxidant CA 0.2 parts, 2-(2 ， 0.9 parts of -hydroxy-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole and 0.2 parts of dilauryl thiodipropionate were used to prepare a cooling fan blade for a diesel engine. The specific preparation is as in Example 1.

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Abstract

The invention relates to a cooling fan blade of a diesel engine and a manufacture method thereof and belongs to the technical field of diesel engines. The cooling fan blade of the diesel engine comprises the following components in parts by weight: 70-90 parts of polypropylene, 15-20 parts of high-density polyethylene, 0.15-0.20 part of hydroisomerization dewax base oil 5CST, 0.13-0.18 part of hydroisomerization dewax base oil IOCST, 0.1-0.3 part of antioxidant CA (carbonic anhydrase), 0.5-1.0 part of ultraviolet absorbent and 0.1-0.3 part of dilauryl thiodipropionate; and the cooling fan blade is manufactured by virtue of extruding and injection molding. By using the manufacture process, the stress concentration factor is reduced, the impact resistance and fatigue resistance are improved, the flowing and mold-filling performance of the plastic melt is improved, the flowing resistance and local residual stress are reduced, the cracking and warping are prevented and the appearance of the cooling fan blade is beautiful, thus the cooling fan blade can be widely applied to medium trunks, especially to diesel engine trunks.

Description

technical field [0001] The invention belongs to the technical field of diesel engines, and in particular relates to a diesel engine cooling fan blade and a preparation method thereof. Background technique [0002] As a plastic fan for cooling the "heart" engine of a car, it needs to be used at a temperature of -40-100°C for a long time. As a plastic fan for a heavy-duty truck engine, it has higher requirements and is durable in dry cold, humid heat and constant wind flow environment. The use of environmental conditions is harsh. Therefore, the plastic fan is required not only to have high strength and high rigidity, but also to have excellent high and low temperature impact toughness, heat resistance and heat and oxygen aging resistance to prevent the fan from deforming and cracking. Polypropylene is a general-purpose plastic with low price and large production volume. However, due to its poor low-temperature impact performance, poor resistance to light, heat, and aging, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L53/00C08L23/06C08L91/00C08K5/372C08K5/3475B29C45/76F04D29/26F01P5/02
Inventor 王俊定
Owner 临海市四通制管有限公司
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