Special material for antistatic impact fire resistant polyethylene pipe

A technology of flame retardant polyethylene and special materials for pipes, applied in applications, tubular items, household appliances, etc., can solve the problems of easy combustion, easy rust corrosion, high comprehensive cost, and achieve excellent impact strength and flame retardant performance. good effect

Inactive Publication Date: 2005-08-24
QINGDAO UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0002] At present, the ventilation pipes, water pipes and gas drainage pipes in coal mines are made of metal pipes such as cast iron pipes, which have the disadvantages of easy rust and corrosion, inconvenient installation, short service life, frequent maintenance, and high overall cost. Although plastic pipes can To overcome the above-mentioned shortcomings of metal pipes, but the antistatic performance and impact resistance of plastic pipes are poor, and they are easy to burn. The existing plastic pipes for coal mines reduce the impact strength of the pipes due to the addition of a large amount of antistatic agents and flame retardants. It is difficult to achieve a comprehensive balance of antistatic performance, impact resistance and flame retardancy, which greatly limits the further popularization and application of plastic pipes in coal mines and other fields

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0024] Using high-density polyethylene as the base material, the component contents (parts by weight) of the compositions are listed in Table 1.

[0025] (1) Antistatic agent, flame retardant, flame retardant synergist, toughening agent 1, toughening agent 2, light stabilizer, antioxidant and 20 parts of high-density polyethylene are placed in a high-speed mixer, and mixed 10-15 minutes, rotating speed 800rpm. Put the mixed material into the hopper of the single-screw extruder. The temperature of each section of the screw is 170-180°C, and the screw speed is 300rpm. The material is pelletized, air-dried, and cooled to make antistatic, anti-impact, and flame-retardant masterbatches.

[0026] (2) Disperse and blend the antistatic anti-impact flame-retardant masterbatch and the remaining parts of high-density polyethylene, melt, knead, extrude, cool, dry, pelletize and pack through a twin-screw extruder to obtain product. The temperature of each section of the screw is 240-280°...

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Abstract

An antistatic, anti-impact and flame-retarded polyethene used for pipeline is proportionally prepared from high-density polyethene, antistatic agent, flame retarder, flame-retarded synergist, toughening agent, optical stabilizer and antioxidizing agent through mixing part of polyethene with others, extruding out to become particles, mixing with rest of polyethene, dual-screw extruding out, cooling, drying and cutting to become particles.

Description

Technical field: [0001] The invention relates to a special antistatic anti-shock flame-retardant polyethylene pipe material and a preparation method thereof. Background technique: [0002] At present, the ventilation pipes, water pipes and gas drainage pipes in coal mines are made of metal pipes such as cast iron pipes, which have the disadvantages of easy rust and corrosion, inconvenient installation, short service life, frequent maintenance, and high overall cost. Although plastic pipes can To overcome the above-mentioned shortcomings of metal pipes, but the antistatic performance and impact resistance of plastic pipes are poor, and they are easy to burn. The existing plastic pipes for coal mines reduce the impact strength of the pipes due to the addition of a large amount of antistatic agents and flame retardants. It is difficult to achieve a comprehensive balance of antistatic performance, impact resistance and flame retardant performance, which greatly limits the furthe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D23/00C08K5/3475C08L23/06
Inventor 冯绍华张明连李荣勋刘莉李伟黄兆阁李超芹
Owner QINGDAO UNIV OF SCI & TECH
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