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Wear-resistant material for impeller and preparation method thereof

A wear-resistant material and impeller technology, applied in the field of impeller materials, can solve the problems of reducing the bonding force of metal skeleton, poor oil and solvent resistance, and decreasing rubber hardness, and achieve good wear resistance, excellent fatigue resistance, and heat generation. small deformation effect

Active Publication Date: 2021-07-16
浙江金木泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although natural rubber has good wear resistance, when the impeller rotates at a speed of several thousand revolutions per minute, the hysteresis loss caused by irreversible deformation of natural rubber will be converted into heat energy, resulting in an increase in the internal temperature of the rubber and a decrease in the hardness of the rubber. , the deformation increases, reducing the bonding force between it and the metal skeleton of the impeller, thus affecting the use of the impeller; and because natural rubber is a non-polar rubber, it can only resist some low-level ketones and alcohols, and it will swell in non-polar solvents. Its oil resistance and solvent resistance are very poor, so that this impeller cannot be used in fuel oil; therefore, the wear-resistant materials for traditional impellers still have certain defects

Method used

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  • Wear-resistant material for impeller and preparation method thereof

Examples

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Comparison scheme
Effect test

preparation example 1

[0037] Preparation example 1 of modified aramid fiber: ① Soak the aramid fiber in 80wt% acetone solution for 1 hour, then take it out, wash it with deionized water, and dry it to obtain clean aramid fiber;

[0038] ②Put the aramid fiber in a sodium hydroxide solution with a concentration of 5wt%, stir and soak for 1 hour, take it out, wash it with deionized water until it is neutral, and obtain the pretreated aramid fiber after drying;

[0039] ③Mix γ-aminopropyltriethoxysilane and absolute ethanol at a ratio of 1:50 by weight to obtain an ethanol solution of silane coupling agent; take 10kg of aramid fiber, and add 20kg of silane coupling agent to it The ethanol solution of the agent was stirred at 60°C for 40 minutes, then 0.5kg of silicon carbide whiskers were added, after stirring, it was kept for 6 hours at heat preservation; after drying, the modified aramid fiber with a water content of less than 0.1% was obtained.

preparation example 2

[0040] Preparation example 2 of modified aramid fiber: ① Soak the aramid fiber in 80wt% acetone solution for 1.5h, then take it out, wash it with deionized water, and dry it to obtain clean aramid fiber;

[0041] ②Put the aramid fiber in a sodium hydroxide solution with a concentration of 7.5wt%, stir and soak for 1.5h, take it out, wash it with deionized water until neutral, and obtain the pretreated aramid fiber after drying;

[0042] ③Mix γ-aminopropyltriethoxysilane and absolute ethanol at a weight ratio of 1:50 to obtain an ethanol solution of a silane coupling agent; take 10kg of aramid fiber, and add 25kg of silane coupling agent to it The ethanol solution of the agent was stirred at 70°C for 50 minutes, then 0.75 kg of silicon carbide whiskers were added, and after stirring, it was kept for 8 hours and then dried to obtain a modified aramid fiber with a water content of less than 0.1%.

preparation example 3

[0043] Preparation example 3 of modified aramid fiber: ① Soak the aramid fiber in 80wt% acetone solution for 2 hours, then take it out, wash it with deionized water, and dry it to obtain clean aramid fiber;

[0044] ②Put the aramid fiber in a sodium hydroxide solution with a concentration of 10wt%, stir and soak for 2 hours, take it out, wash it with deionized water until it is neutral, and obtain the pretreated aramid fiber after drying;

[0045] ③Mix γ-aminopropyltriethoxysilane and absolute ethanol at a ratio of 1:50 by weight to obtain an ethanol solution of silane coupling agent; take 10kg of aramid fiber, and add 30kg of silane coupling agent to it The ethanol solution of the agent was stirred at 80°C for 60 minutes, then 1 kg of silicon carbide whiskers was added, and after stirring, it was kept for 10 hours at heat preservation; and after drying, the modified aramid fiber with a water content of less than 0.1% was obtained.

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Abstract

The invention discloses a wear-resistant material for an impeller and a preparation method thereof. The gist of the technical solution is a wear-resistant material for an impeller, which comprises the following components in parts by weight: thermoplastic polyurethane elastomer TPU 60-70 parts, thermoplastic 30-40 parts of polyester elastomer TPEE, 10-15 parts of modified aramid fiber, 5-10 parts of filler, 0.3-0.5 part of lubricant and 0.5-1 part of antioxidant. The product prepared by the present invention with TPU, TPEE and modified aramid fiber as the main material has excellent wear resistance and oil resistance, and TPEE has excellent fatigue resistance, less hysteresis loss, less heat generation deformation, and is suitable for burning oil and Used in the environment of machine oil.

Description

technical field [0001] The invention relates to the technical field of impeller materials, more specifically, it relates to a wear-resistant material for an impeller and a preparation method thereof. Background technique [0002] The impeller refers to the components composed of blades, discs, wheel covers and other parts; the centrifugal pump impeller mainly has the following four forms: closed type, front half open type, rear half open type and open type; according to the different places where the impeller is used , the performance requirements of the impeller are also different; among them, the wear resistance of the impeller is the main factor affecting its service life. In order to improve the wear resistance of the impeller, materials with high strength and good wear resistance can be used, but this will not only bring difficulties to the manufacturing process of the impeller, but also increase the production cost; therefore, in order to improve the wear resistance of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L67/00C08L77/10C08K7/10C08K9/06C08K3/36C08K5/134C08K5/526C08K13/06
CPCC08L75/04C08L2201/08C08L2205/03C08L2205/16C08L67/00C08L77/10C08K7/10C08K9/06C08K3/36C08K5/1345C08K5/526C08K13/06
Inventor 吴汇来吴前刃
Owner 浙江金木泵业有限公司