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Infrared irridiation crosslinked polyethylene plastic for pipe, wire and cable and its preparing method

A cross-linked polyethylene, wire and cable technology, applied in applications, household utensils, tubular objects, etc., can solve the problems of complex process, large equipment investment, large equipment footprint, etc., to improve cross-linking quality, improve activity, The effect of improving efficiency

Active Publication Date: 2006-03-22
上海高分子功能材料研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of cross-linking technology has greatly improved the maximum service temperature and environmental stress cracking resistance of cables and pipes, but general peroxide cross-linking requires a higher temperature (250 ° C ~ 420 ° C), and needs to be in nitrogen. To maintain a high pressure (0.8-1.0MPa), the process is complicated, the equipment investment is large, the equipment occupies a large area, and the energy consumption is large

Method used

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  • Infrared irridiation crosslinked polyethylene plastic for pipe, wire and cable and its preparing method
  • Infrared irridiation crosslinked polyethylene plastic for pipe, wire and cable and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1 is used for pipes in occasions with certain requirements on mechanical properties.

Embodiment 2

[0040] Example 2 is used for pipes in occasions with higher performance requirements.

[0041] Infrared irradiation cross-linked polymer

Composition of vinyl plastic

Dosage (parts by weight)

Example 3

Example 4

Example 5

Example 6

Control, unirradiated

polyethylene resin

100

100

100

100

100

peroxide crosslinking agent

0.5

0.8

0.5

0.8

0

Auxiliary crosslinking agent

0.2

0.2

0.2

0.2

0

lubricant

0.1

0.1

0.1

0.1

0

antioxidant

0.02

0.05

0.03

0.05

0

filler

0

0

10

40

0

[0042] The peroxide crosslinking agent in above-mentioned embodiment 3~6 is di-tert-butyl peroxide, and antioxidant is the 1010 of CIBA company namely tetrakis [3-(3,5-di-tert-butyl-4-hydroxyl phenyl) ) propionic acid] pentaerythritol ester, the auxiliar...

Embodiment 7

[0046] Embodiment 7 (special equipment for infrared radiation)

[0047] see figure 1 and figure 2 , the special equipment for the preparation method of infrared radiation cross-linked polyethylene plastics for pipes, wires and cables, consisting of infrared radiation box [1] and protective cover [6], pipes, wires and cables inlet [10] and outlet [ 11], which is characterized in that: the infrared radiation camera [1] is composed of a reflector [3], three evenly distributed infrared lamps [2], polyethylene pipes, wire and cable isolation layers [9], and the reflector [3] ]’s cross-section is a petal shape composed of three ellipses with a common focus, three infrared lamps [2] are respectively fixed on the respective focal points of three oval petal-shaped reflectors [3], polyethylene pipes, wires The cable isolation layer [9] is set on the common focus of 3 oval petal-shaped reflectors [3], and the reflector [3] is provided with an air outlet [4] and an air inlet [7], and t...

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Abstract

The polyethylene plastic consists of polyethylene resin 100 weight portions, peroxide as cross-linking agent 0.2-2.5 weight portions, antioxidant 0.01-1.5 weight portions, auxiliary cross-linking agent 0.01-10 weight portions, lubricant 0.1-5 weight portions, and stuffing 0-80 weight portions. All the materials are mixed fully, the mixture is pelletized in an extruder at 80-190 deg.c, and the pelletized product is dried to water content less than 200 ppm and stored inside vacuum packing bag. When used, the pelletized material is extruded into pipe, wire or cable coating and hot radiation cross-linked in special infrared irradiation equipment to form cross-linked polyethylene product with excellent mechanical performance and heat performance.

Description

technical field [0001] The invention relates to an infrared radiation cross-linked polyethylene plastic used for pipes, electric wires and cables and a preparation method thereof. Background technique [0002] Cross-linked polyethylene plastic has the advantages of good heat resistance, strong load capacity, non-melting, corrosion resistance, high mechanical properties, excellent electrical properties, and no carcinogenic lead stabilizers. It is used in more and more wires, cables, and pipes It is used to replace traditional PVC plastic in manufacturing. The application of cross-linking technology has greatly improved the maximum service temperature and environmental stress cracking resistance of cables and pipes, but general peroxide cross-linking requires a higher temperature (250 ° C ~ 420 ° C), and needs to be in nitrogen. To maintain a high pressure (0.8-1.0MPa), the process is complicated, the equipment investment is large, the equipment occupies a large area, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/04C08K5/36B29D23/00
Inventor 穆肖斌陈肖勤
Owner 上海高分子功能材料研究所
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