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Ultraviolet light cross-linking heat-shrinkage pipe material and method for producing ultraviolet light cross-linking heat-shrinkage pipe

A technology of ultraviolet light and heat-shrinkable tubes, applied in the field of cross-linked heat-shrinkable tubes, can solve problems such as slow benefit recovery, harsh protection conditions, and cobalt source leakage, and achieve low equipment investment costs, low radiation cross-linking costs, The effect of low product cost

Active Publication Date: 2013-04-03
SHENZHEN WOER HEAT SHRINKABLE MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cross-linked heat-shrinkable sleeves currently used all use high-energy radiation cross-linking method (electron accelerator or cobalt source) to irradiate the tube; and the high-energy radiation cross-linking method in the above-mentioned method requires high equipment investment and relatively difficult operation and maintenance. Complex and harsh protection conditions; cobalt source irradiation costs are high, efficiency is relatively low, and cobalt source has a great risk of leakage
These two radiation sources have the characteristics of large investment and slow return of benefits, and the investment cost is unbearable for small and medium-sized enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Mixing: by weight, 60 parts of ethylene-vinyl acetate copolymer (EVA, VA content is 18%, melt index is 3.5g / 10min); 10 parts of ethylene-octene copolymer (octene The content is 10%, the melt index is 2.0g / 10min); 25 parts of polyethylene (LLDPE, the melt index is 2.0g / 10min); 5 parts of maleic anhydride modified ethylene-octene copolymer; 2 parts of diaryl Ionium salt cationic photoinitiator, 2 parts of benzophenone (BP) free radical photoinitiator, 0.5 part of antioxidant 1010 (tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionate] pentaerythritol ester), 1.0 part of antioxidant DLTP (dilauryl thiodipropionate), 0.1 part of sensitizer, 2.0 parts of masterbatch are mixed to form a mixture;

[0032] (2) Making pellets: Extrude the mixture in a banbury mixer or a twin-screw extruder at a temperature of 100°C, wire drawing, cooling, and pelletizing to form pellets;

[0033] (3) Extrude the pipe: Extrude the pellets to prepare a pipe with a certain thickness and outer...

Embodiment 2

[0038] (1) Compounding: by weight, 90 parts of ethylene-vinyl acetate copolymer (EEA, EA content is 14%, and melt index is 2.0g / 10min); 7 parts by weight of ethylene-butylene copolymer (butylene ethylene content is 20%, melt index is 1.5g / 10min); 3 parts of maleic anhydride modified ethylene-acrylic acid ester copolymer (the content of copolymer accounts for 2% by weight, and melt index is 5.0g / 10min); 0.5 part 4,4'-dimethyldiphenyliodonium phosphate cationic photoinitiator, 3.7 parts of dialkoxy acetophenone free radical photoinitiator, 1.0 part of antioxidant 1010 (four [β-(3,5 -di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester), 0.3 part of antioxidant DLTP (dilauryl thiodipropionate), 0.2 part of anticopper agent MD-1024, 0.5 part of sensitization Agent TAIC, 5.0 parts of color masterbatch are mixed to form a mixture;

[0039] (2) Making pellets: extrude the mixture in a banbury mixer or a twin-screw extruder at a temperature of 120°C, wire drawing, cooling...

Embodiment 3

[0045](1) Mixing: by weight, 90 parts of polyethylene (LDPE, melt index is 1.0g / 10min); 4 parts of ethylene-octene copolymer (octene content is 15%, melt index is 2.0g / 10min); 10min); 6 parts of maleic anhydride modified ethylene-octene copolymer; 1.5 parts of triarylsulfonium salt cationic photoinitiator, 3.1 parts of benzoin dimethyl ether (BDK) free radical photoinitiator, 0.4 part of antioxidant 1010 (tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester), 0.6 parts of antioxidant DSTP (dilauryl thiodipropionate), 0.5 parts of sensitive Chemical agent, 2.0 parts of color masterbatch are mixed to form a mixture;

[0046] (2) Making pellets: Extrude the mixture in a banbury mixer or a twin-screw extruder at a temperature of 140°C, wire drawing, cooling, and pelletizing to form pellets;

[0047] (3) Extrude the pipe: Extrude the pellets to prepare a pipe with a certain thickness and outer diameter;

[0048] (4) Ultraviolet light irradiation: the ...

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Abstract

The invention discloses an ultraviolet light cross-linking heat-shrinkage pipe material which comprises the following components in parts by weight: 100 parts of polyolefine and / or ethylene propylene diene rubber, 0.5-10 parts of ultraviolet light initiating agents, 0-20 parts of polymer compatilizers, 0-5 parts of antioxidants, 0-250 parts of fire retardants, 0-3 parts of sensitizers, 0-3 parts of lubricants and 0-20 parts of color masterbatches. The invention also provides a method for producing the ultraviolet light cross-linking heat-shrinkage pipe. The method comprises the following steps of: (1) mixing materials; (2) preparing granular materials; (3) extruding a pipe; (4) carrying out ultraviolet light irradiation; and (5) expanding, and cooling for shaping. The ultraviolet light cross-linking heat-shrinkage pipe material and the method for producing the ultraviolet light cross-linking heat-shrinkage pipe have the characteristics that adopting a method for carrying out ultraviolet light irradiation cross-linking by matching the ultraviolet light initiating agents with a special ultraviolet light source. The method disclosed by the invention has the advantages of low equipment investment cost, low irradiation cross-linking cost, simple process, energy conservation, environment protection, low product cost and good quality.

Description

technical field [0001] The invention belongs to the technical field of cross-linked heat-shrinkable sleeves, in particular to a cross-linked heat-shrinkable sleeve and a production method thereof. Background technique [0002] Cross-linked heat-shrinkable materials have the advantages of excellent electrical properties and high long-term use temperature, and are widely used in the installation of wires and cables to insulate, protect or mark wires and cables. The cross-linked heat-shrinkable sleeves currently used all use high-energy radiation cross-linking method (electron accelerator or cobalt source) to irradiate the tube; and the high-energy radiation cross-linking method in the above-mentioned method requires high equipment investment and relatively difficult operation and maintenance. Complex and harsh protection conditions; cobalt source irradiation costs are high, efficiency is relatively low, and cobalt source has a great risk of leakage. The radiation sources of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L23/16C08L51/00C08J3/28C08J3/24
Inventor 周和平桂全红张强
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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