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Polyethylene material modification technology for production of isolation sleeve of magnetic drive pump

A polyethylene and isolation sleeve technology, which is applied in the field of pump material processing, can solve problems such as low compressive strength, affecting service life, and easy cracking, and achieve the effects of enhancing physical and chemical properties, increasing service life, and improving impact strength

Inactive Publication Date: 2017-11-10
ANHUI LUYUAN PUMP&VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The isolation sleeve is one of the essential parts in the magnetic pump. At present, the material used to manufacture the isolation sleeve is mainly polyethylene, but it often has the problems of easy cracking and low compressive strength during use, which affects the overall performance of the pump. service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A polyethylene material modification process for the production of magnetic pump isolation sleeves, comprising the steps of:

[0026] (1) Weighing of raw materials:

[0027] Weigh the following materials in corresponding parts by weight: 140 parts of polyethylene, 12 parts of rubber, 8 parts of polypropylene, 25 parts of 2-ethoxyethyl acetate, 7 parts of nano-titanium dioxide, 0.3 parts of stabilizer, 0.2 parts of antioxidant , 1.5 parts accelerator, 1 part lubricant, 0.6 parts titanate coupling agent;

[0028] (2) Preparation of mixture A:

[0029] Mix 140 parts of polyethylene, 12 parts of rubber, 8 parts of polypropylene, 25 parts of 2-ethoxyethyl acetate and 7 parts of nano-titanium dioxide described in step (1), and put them into a high-speed mixer for stirring 40min, control the stirring speed to 2600 rpm, then take it out and put it into a closed tank, heat to keep the temperature in the closed tank at 45~50°C, and raise the pressure in the closed tank to 2.5MP...

Embodiment 2

[0042] A polyethylene material modification process for the production of magnetic pump isolation sleeves, comprising the steps of:

[0043] (1) Weighing of raw materials:

[0044] Weigh the following materials in corresponding parts by weight: 150 parts of polyethylene, 16 parts of rubber, 11 parts of polypropylene, 28 parts of 2-ethoxyethyl acetate, 10 parts of nano titanium dioxide, 0.5 parts of stabilizer, 0.3 parts of antioxidant , 2 parts of accelerator, 2 parts of lubricant, 1 part of titanate coupling agent;

[0045] (2) Preparation of mixture A:

[0046] Mix 150 parts of polyethylene, 16 parts of rubber, 11 parts of polypropylene, 28 parts of 2-ethoxyethyl acetate and 10 parts of nano-titanium dioxide described in step (1), and put them into a high-speed mixer for stirring 43min, control the stirring speed to 2700 rpm, then take it out and put it into a closed tank, heat to keep the temperature in the closed tank at 50~55°C, and raise the pressure in the closed tank...

Embodiment 3

[0059] A polyethylene material modification process for the production of magnetic pump isolation sleeves, comprising the steps of:

[0060] (1) Weighing of raw materials:

[0061] Weigh the following materials in corresponding parts by weight: 160 parts of polyethylene, 20 parts of rubber, 13 parts of polypropylene, 32 parts of 2-ethoxyethyl acetate, 12 parts of nano titanium dioxide, 0.6 parts of stabilizer, 0.4 parts of antioxidant , 2.5 parts accelerator, 3 parts lubricant, 1.5 parts titanate coupling agent;

[0062] (2) Preparation of mixture A:

[0063] Mix 160 parts of polyethylene, 20 parts of rubber, 13 parts of polypropylene, 32 parts of 2-ethoxyethyl acetate and 12 parts of nano-titanium dioxide described in step (1), and put them into a high-speed mixer for stirring 45min, control the stirring speed to 2800 rpm, then take it out and put it into a closed tank, heat to keep the temperature in the closed tank at 55~60°C, and raise the pressure in the closed tank to ...

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PUM

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Abstract

The invention discloses a polyethylene material modification technology for production of an isolation sleeve of a magnetic drive pump. The technology comprises the following steps of (1) raw material weighing, (2) mixture A preparing, (3) mixture B preparing and (4) finished product extruding. According to the technology, focusing on existing technological difficulties of polyethylene modification processing, through lots of experiments, improvement is conducted on selection of the raw materials and processing technology, reinforcement of the physicochemical properties of the polyethylene material is effectively achieved at last, the impact resistance strength of the polyethylene material finished product prepared is improved by 14 times or above, the decrease amplitude of the tensile strength of the polyethylene material finished product is stabilized within 5%, the overall physicochemical properties are good, the isolation sleeve prepared by the polyethylene material finished product has a good use function, and thus the service life of the pump can be effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of pump material processing, and in particular relates to a polyethylene material modification process for the production of magnetic pump isolation sleeves. Background technique [0002] Pump is one of the necessary mechanical equipment in people's life now, which provides convenience for daily production. There are many types of pumps, which can be selected according to specific usage conditions. Among them, the magnetic pump (magnetic drive pump) is mainly composed of pump head, magnetic drive (magnetic cylinder), motor, connecting bottom plate and other parts. The magnetic drive of the magnetic pump is composed of an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolation sleeve. When the motor drives the outer magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic substances, and drive the inner magnetic rotor connected to the impeller to operate. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L21/00C08L23/12C08L91/06C08K13/02C08K5/101C08K3/22C08K5/098C08K5/134
CPCC08L23/06C08K2003/2241C08L2205/02C08L2205/035C08L21/00C08L23/12C08L91/06C08K13/02C08K5/101C08K3/22C08K5/098C08K5/1345
Inventor 凤元军
Owner ANHUI LUYUAN PUMP&VALVE CO LTD
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