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SiC/epoxy resin composite material and method for manufacturing pump components with it

A technology of epoxy resin and composite material, which is applied to parts, pump elements, pumps, etc. of pumping devices for elastic fluids, and achieves the effects of low raw material cost, shortened curing time, and good erosion and wear resistance.

Active Publication Date: 2013-03-13
JIANGSU PROVINCE YIXING NONMETALLIC CHEM MACHINERY FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of these two comparative documents is that what they prepare is the coating, not the whole parts. The quality requirement of the coating is good wear resistance, while the whole part needs to have compression resistance and bending resistance. Certain hardness, and no deformation after molding

Method used

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  • SiC/epoxy resin composite material and method for manufacturing pump components with it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Treat the SiC particles at 350°C for 1 hour, ultrasonically clean them in acetone for 30 minutes, wash them with water, and dry them for later use.

[0028] Mix epoxy resin, curing agent and coupling agent, evacuate and stir in a closed container at 40°C for 40 minutes, add SiC and continue stirring under vacuum for 40 minutes to obtain a mixed slurry, and the relative vacuum in the closed container is less than -0.07MPa.

[0029] The mixed slurry is injected into the pump impeller mold through a pipeline with a height difference of 1 meter from the mold, and the pump impeller mold is placed in a closed container at 60°C, and vibrated for 1 hour while vacuuming, and the relative vacuum degree in the closed container is less than –0.05 MPa.

[0030] Dry the green body after vacuum vibration molding at 80°C for 4 hours and demould it. After demoulding, put it into an electric furnace to heat and solidify. The heating temperature is 80°C and the time is 2 hours. The SiC / ep...

Embodiment 2

[0033] Treat the SiC particles at 350°C for 1 hour, ultrasonically clean them in acetone for 30 minutes, wash them with water, and dry them for later use.

[0034] Mix epoxy resin, curing agent and coupling agent, vacuumize and stir in a closed container at 50°C for 30 minutes, add SiC and continue stirring under vacuum for 30 minutes to obtain a mixed slurry, and the relative vacuum in the closed container is less than -0.07MPa.

[0035] The mixed slurry is injected into the pump impeller mold through a pipeline with a height difference of 1 meter from the mold, and the pump impeller mold is placed in a closed container at 55 °C, and vibrates for 1.5 h while vacuuming, and the relative vacuum degree in the closed container is less than –0.05 MPa.

[0036] Dry the green body after vacuum vibration molding at 70°C for 5 hours and demould it. After demoulding, put it into an electric furnace to heat and solidify. The heating temperature is 120°C and the time is 4 hours. The SiC / ...

Embodiment 3

[0039] Treat the SiC particles at 350°C for 1 hour, ultrasonically clean them in acetone for 30 minutes, wash them with water, and dry them for later use.

[0040] Mix epoxy resin, curing agent and coupling agent, evacuate and stir in a closed container at 60°C for 25 minutes, add SiC and continue stirring under vacuum for 25 minutes to obtain a mixed slurry, and the relative vacuum in the closed container is less than -0.07MPa.

[0041] Press the mixed slurry into the pump body mold through compressed air, put the pump body mold into a closed container at 50°C, and vibrate for 2 hours while vacuuming, and the relative vacuum degree in the closed container is less than –0.05Mpa.

[0042]Dry the green body after vacuum vibration molding at 90°C for 3 hours and demould it. After demoulding, put it into a gas heating oven for heating and curing. The heating temperature is 160°C and the time is 4 hours, and the SiC / epoxy resin can be obtained Composite pump body.

[0043] The typ...

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Abstract

The invention discloses a SiC / epoxy epoxy resin composite material, wherein raw material components based on weight percentages are as follows: 75-85 wt% of SiC particles, 15-25 wt% of organic component and coupling agent with a mass of 1.5-2.5% of the organic component; the particle size distributions of the SiC particles are as follows: 500-600 microns taking up 65-75 wt%, 100-150 microns taking up 2-30 wt% and 30-40 microns taking up 5-10wt%; the organic component is composed of epoxy resin and curing agent; the mass ratio of the epoxy resin to the curing agent is 3: 1. A preparation method for pump component with SiC / epoxy epoxy resin composite material, comprising the following steps: (1), heating and stirring in vacuum way; (2), pressure pouring; (3), vacuum vibrating and forming; (4), heating and curing. The invention is characterized by simple technology and low production cost. The prepared SiC / epoxy epoxy resin composite material pump component can resist abrasion and corrosion.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a composite material composed of SiC and epoxy resin that can be used to manufacture pump components. Background technique [0002] Motor equipment used in power plants, mines, etc., such as desulfurization pumps, slurry pumps, mud pumps, flotation machines and other chemical equipment, not only have to withstand the erosion and wear of solid particles, but also suffer from electrochemical corrosion and Acid and alkali corrosion. Due to heavy wear and serious corrosion, the service life of the motor and other components is short, and the operating cost is high. [0003] The design and manufacture of domestic pump flow parts are basically made of metal materials, and high-chromium cast iron is difficult to resist the impact of high-speed particles and is not resistant to corrosion. Although stainless steel, high-nickel alloys, and even metal materials such as titaniu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K3/34C08G59/20F04D29/02
CPCC04B26/14
Inventor 丁伟群冯家迪何卫平
Owner JIANGSU PROVINCE YIXING NONMETALLIC CHEM MACHINERY FACTORY
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