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Ultraviolet light irradiated low-smoke halogen-free cable material and its preparation method

A technology of ultraviolet light and irradiation, applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of easy absorption of ultraviolet light, difficult to complete cross-linking of materials, difficult to cure cross-linking, etc., to achieve simple process, The effect of low cost, excellent flame retardancy and mechanical properties

Active Publication Date: 2022-05-20
广东安拓普聚合物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when ultraviolet radiation is used for crosslinking, due to the limited penetration ability of ultraviolet light, when the material is too thick (> 1mm) or the material contains fillers such as inorganic components, it is difficult to completely crosslink the obtained material after irradiation. ; At the same time, there are strict requirements on the color of the irradiated material in the prior art. When the color of the material is too dark, it is easy to absorb ultraviolet light and it is difficult to cure and crosslink

Method used

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  • Ultraviolet light irradiated low-smoke halogen-free cable material and its preparation method
  • Ultraviolet light irradiated low-smoke halogen-free cable material and its preparation method

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preparation example Construction

[0022] The second aspect of the present invention provides a method for preparing a low-smoke halogen-free cable material irradiated with ultraviolet light, comprising the following steps:

[0023] Step 1. In parts by weight, 15-20 parts of ethylene-vinyl acetate copolymer, 15-20 parts of polyethylene, 5-6 parts of maleic anhydride graft, 30-35 parts of flame retardant A, 10-15 parts 1 part of flame retardant B, 0.5-1.5 parts of photoinitiator, 0.01-0.1 part of ultraviolet absorber, and 1-2 parts of additives are added into the internal mixer, and the mixed material is obtained after heating and stirring evenly;

[0024] Step 2, adding the mixed material obtained in step 1 into an extruder, extruding and granulating to obtain granular material;

[0025] Step 3: After heating and irradiating the granular material obtained in Step 2 with a 0.6-1KV ultraviolet irradiator, the low-smoke and halogen-free cable material irradiated by ultraviolet light is obtained.

[0026] In a pre...

Embodiment 1

[0080] Embodiment 1 of the present invention provides a method for preparing a low-smoke halogen-free cable material irradiated with ultraviolet light, comprising the following steps:

[0081] Step 1. In parts by weight, 17.5 parts of ethylene-vinyl acetate copolymer, 17.5 parts of polyethylene, 5.5 parts of maleic anhydride graft, 32.5 parts of flame retardant A, 12.5 parts of flame retardant B, 1 part of photoinitiated Adding agent, 0.05 parts of ultraviolet absorber and 1.5 parts of additives into the internal mixer, stirring at 160°C at a stirring speed of 70r / min for 35min to obtain the mixed material;

[0082] Step 2, adding the mixed material obtained in step 1 into an extruder, extruding and granulating to obtain granular material;

[0083] Step 3. After irradiating the granular material obtained in Step 2 at 120° C. for 4 seconds with a 0.8KV ultraviolet irradiator, the low-smoke and halogen-free cable material irradiated by ultraviolet light is obtained.

[0084] Th...

Embodiment 2

[0087] Embodiment 2 of the present invention provides a method for preparing a low-smoke halogen-free cable material irradiated with ultraviolet light, comprising the following steps:

[0088] Step 1, by weight, sequentially mix 15 parts of ethylene-vinyl acetate copolymer, 15 parts of polyethylene, 5 to 6 parts of maleic anhydride grafts, 30 parts of flame retardant A, 10 parts of flame retardant B, 0.5 parts of Photoinitiator, 0.01 part of ultraviolet absorber, and 1 part of auxiliary agent were added into the internal mixer, and the mixed material was obtained after stirring at a stirring speed of 70 r / min at 160 ° C for 35 min;

[0089] Step 2, adding the mixed material obtained in step 1 into an extruder, extruding and granulating to obtain granular material;

[0090] Step 3. After irradiating the granular material obtained in Step 2 at 120° C. for 4 seconds with a 0.8KV ultraviolet irradiator, the low-smoke and halogen-free cable material irradiated by ultraviolet light ...

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Abstract

The invention discloses a method for preparing a low-smoke halogen-free cable material irradiated by ultraviolet light. Polyolefin materials, flame retardants A and B, a photoinitiator and a small amount of additives are used to prepare an ultraviolet light with excellent performance. Light irradiation for low-smoke and halogen-free cable materials. Experimental test results show that the material prepared by the present invention has excellent flame retardancy and mechanical properties even when the thickness is > 1 mm, contains inorganic fillers or the material is dark in color, and is low-smoke and halogen-free, simple in process and relatively low in cost. Low, has very good practical application value.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a low-smoke and halogen-free cable material irradiated with ultraviolet light and a preparation method thereof. Background technique [0002] Polyolefin materials such as ethylene-vinyl acetate copolymer and polyethylene are widely used in the insulating layer of cables due to their excellent electrical insulation properties. In order to ignite and delay the combustion of wires and cables in the event of a fire, the cable materials on the market generally adopt the method of adding inorganic flame retardants or organic halogen-containing flame retardants, but there are problems such as poor heat resistance or environmental pollution, and the development of environmentally friendly low-smoke Halogen-free cable materials have become a top priority. [0003] At the same time, in order to further enhance the mechanical properties of cable materials, the following three traditional cro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06C08L51/06C08K13/02C08K5/523C08K5/56C08K5/132C08K5/42C08J3/28C08J3/24H01B3/44
CPCC08L23/0853C08L23/06C08J3/28C08J3/24H01B3/441C08L2201/02C08L2201/22C08L2203/202C08L2205/02C08L2205/03C08J2323/08C08J2423/06C08J2423/08C08J2323/06C08J2451/06C08L51/06C08K13/02C08K5/523C08K5/56C08K5/132C08K5/42
Inventor 武涛刘悦李同兵钟荣栋
Owner 广东安拓普聚合物科技股份有限公司