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Special material for water supply pipe used in mine

A technology for special materials and water pipes, which is applied in the field of special materials for mine water pipes. It can solve the problems of heavy weight of concrete pipes, difficulties in transportation and installation, and easy generation of static electricity. It achieves excellent flame retardancy and safety performance, saves corrosion and descaling The cost, the effect of small conveying resistance

Active Publication Date: 2014-02-19
吉林喜丰节水科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal pipes mainly have problems such as high density; difficulties in transportation, laying, and installation; pipes are easy to corrode; concrete pipes have disadvantages such as heavy weight and difficult installation; And metal pipes, many scientific research institutions and enterprises have successfully developed a variety of mine-specific plastic pipes, among which polyethylene resin has the characteristics of non-toxicity, good corrosion resistance, good compression resistance, good self-lubricating property, light weight and other characteristics to replace traditional metal and concrete The material is an ideal material, but due to the high surface resistivity of polyethylene, it is easy to generate static electricity on the surface of the pipe, and because polyethylene resin is a flammable plastic, these unfavorable factors limit the application of polyethylene resin on mine pipes. In order to make polyethylene Resin can be used in mine pipes, polyethylene resin must be improved

Method used

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  • Special material for water supply pipe used in mine

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preparation example Construction

[0018] 2. Preparation of special flame retardant masterbatch for polyethylene resin:

[0019] The special flame retardant masterbatch for polyethylene resin is made of the following raw materials: linear low density polyethylene resin 25kg, microencapsulated red phosphorus (flame retardant) 75kg, chlorinated polyethylene (compatibilizer) 6㎏, N, N`—ethylene bisstearamide (dispersant) 2kg, polyethylene low molecular weight wax (lubricant) 2kg, add flame retardant, compatibilizer, dispersant, lubricant to high-speed mixer After mixing for 25 minutes at 60°C, add the base resin to a high-speed mixer and mix for 30 minutes, then put the fully mixed material into a twin-screw extruder for plasticizing and extruding, cool and granulate, and prepare a special flame-retardant masterbatch for polyethylene resin stand-by. Among them, the temperature setting of each section of the twin-screw extruder is: zone 1: 160°C, zone 2: 170°C; zone 3: 170°C; zone 4: 185°C; zone 5: 195°C. Host spe...

Embodiment 1

[0022] Weigh 65kg of high-density polyethylene resin according to the proportion; 20kg of reinforced masterbatch (reinforcing agent) for polyethylene resin; 5kg of conductive carbon black (colorant); 10kg of flame-retardant masterbatch for polyethylene resin (flame retardant) ㎏; N-(3-dodecyloxy-2-hydroxypropyl) ethanolamine (antistatic agent) 1 ㎏; calcium stearate (processing aid) 0.5 ㎏. Add polyethylene resin, reinforcing agent, coloring agent, flame retardant, antistatic agent, and processing aid into the high-speed mixer according to the above ratio, and the speed of the mixer is set at 800-1000 r / min, and after mixing for 10-30min , the above mixture is plasticized and extruded by a twin-screw extruder, cooled and granulated to obtain a special material for mine water delivery pipes. Among them, the temperature of each zone of the twin-screw extruder barrel is zone 1: 160°C, zone 2: 175°C, zone 3: 180°C, zone 4: 195°C, zone 5: 205°C. Host speed: 800-1200 r / min.

Embodiment 2

[0024] Weigh 65 kg of high-density polyethylene resin according to the proportion; 15 kg of reinforced masterbatch (reinforcing agent) for polyethylene resin; 5 kg of conductive carbon black (colorant); 15 kg of flame retardant master batch for polyethylene resin (flame retardant) ㎏; N-(3-dodecyloxy-2-hydroxypropyl) ethanolamine (antistatic agent) 1 ㎏; calcium stearate (processing aid) 0.5 ㎏. After mixing polyethylene resin, reinforcing agent, coloring agent, flame retardant, antistatic agent and processing aid at the above ratio at 800-1000 r / min for 10-30 minutes, the above mixture is plasticized and extruded by a twin-screw extruder. Extrusion, cooling and granulation to produce special materials for mine water delivery pipes. Among them, the temperature of each zone of the twin-screw extruder barrel is zone 1: 160°C, zone 2: 175°C, zone 3: 180°C, zone 4: 195°C, zone 5: 205°C. Host speed: 800-1200 r / min.

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Abstract

The invention relates to a special material for a water supply pipe used in a mine. The special material is prepared from raw materials consisting of 50 to 70 parts of a polyethylene resin, 10 to 30 parts of a reinforcing agent, 5 parts of a coloring agent, 10 to 30 parts of a fire retardant, 0.1 to 1 part of an antistatic agent, 0.01 to 1 part of a processing aid, etc. A preparation method for the special material comprises the following steps: adding the polyethylene resin, the reinforcing agent, the coloring agent, the fire retardant, the antistatic agent and the processing aid in proportion into a high speed mixer for mixing for 10 to 30 min; and subjecting an obtained mixed material to plasticizing and extrusion by a double screw extruder, cooling and granulation so as to prepare the special material for the water supply pipe used in the mine. The special material prepared by the invention has the advantages of good flame retardation, excellent antistatic performance, high rigidity, light weight, corrosion resistance, no fouling, convenience in installation, etc., can be used for conveying high-sulfur water containing calcium ions, magnesium ions, etc. under the mine and has wide market prospects.

Description

technical field [0001] The invention is a special material for mine water delivery pipes, which belongs to the field of polymer processing. Background technique [0002] Metal pipes and concrete pipes have been used in traditional coal mine water delivery pipes. Metal pipes mainly have problems such as high density; difficulties in transportation, laying, and installation; pipes are easy to corrode; concrete pipes have disadvantages such as heavy weight and difficult installation; And metal pipes, many scientific research institutions and enterprises have successfully developed a variety of mine-specific plastic pipes, among which polyethylene resin has the characteristics of non-toxicity, good corrosion resistance, good compression resistance, good self-lubricating property, light weight and other characteristics to replace traditional metal and concrete The material is an ideal material, but due to the high surface resistivity of polyethylene, it is easy to generate stati...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K13/06C08K9/10C08K3/02C08J3/22
CPCC08J3/226C08J2323/06C08J2323/08C08J2423/08C08L23/06C08L2201/02C08L2201/04C08L2201/22C08L2203/18C08L2205/025C08L2205/035C08L2207/062C08L23/0815C08K13/06C08K9/04C08K2003/265C08K9/10C08K2003/026
Inventor 李静华赵松滨王雁包臣明
Owner 吉林喜丰节水科技股份有限公司
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