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Low-smoke halogen-free inflaming-retarding cable material and preparation method thereof

A technology of flame-retardant cable materials and cable materials, which is applied in the direction of insulating cables, cables, circuits, etc., and can solve problems such as the difficulty in preparing halogen-free flame-retardant wires and cables

Inactive Publication Date: 2009-12-09
ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, it is difficult to prepare halogen-free flame-retardant materials with high temperature resistance (150°C), high strength (≥13.79MPa), high elongation (≥300%), and high flame retardancy (VW-1) for the above halogen-free flame-retardant materials. Wire and Cable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0083] Preparation method of cable material

[0084] The present invention also provides a kind of preparation method of described cable material, comprises the steps:

[0085] (a) Mix the following components:

[0086]5 to 15 parts by weight of a compatibilizer, which includes ethylene-vinyl acetate copolymer (EVA-g-MAH) grafted with maleic anhydride functional groups and ethylene-propylene-diene rubber grafted with maleic anhydride functional groups (EPDM-g-MAH); 85~95 parts by weight of the substrate, the substrate is made of linear low density polyethylene (LLDPE), ethylene-vinyl acetate copolymer (EVA), EPDM pellets ( EPDM) obtained by blending two or more types; 2 to 6 parts by weight of composite antioxidant, said composite antioxidant is composed of antioxidants in the following weight ratio: hindered phenolic antioxidant: thioester Antioxidant=1: (2~6); 0.1~0.5 parts by weight of metal deactivator; 20~40 parts by weight of ammonium polyphosphate, 10~20 parts by we...

Embodiment 1B

[0109] Embodiment 1B prepares the EPDM-g-MAH of the EPDM pellets of maleic anhydride functional group grafting

[0110] The preparation method of embodiment 1B is as shown in embodiment 1A, difference is that, raw material formula is as follows table 1B:

[0111] Table 2: Example 1B (Preparation of EPDM-g-MAH)

[0112] Substance name

[0113] Finally, EPDM-g-MAH with a grafting rate of 2.0% was obtained. The resulting EPDM-g-MAH was used in Examples 2A-H.

Embodiment 1

[0114] Embodiment 1C prepares the EPDM-g-MAH of EPDM-g-MAH of maleic anhydride functional group grafting

[0115] The preparation method of embodiment 1C is as shown in embodiment 1A, difference is, adopts 60 Co source γ-rays irradiated 5KGy to obtain EPDM-g-MAH with a grafting rate of 0.6% by weight. The resulting EPDM-g-MAH was used in Examples 2A-H.

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Abstract

The invention provides a low-smoke halogen-free inflaming-retarding cable material and preparation method thereof. The cable material comprises 5 to 15 parts (part by weight) of compatilizer that comprises maleic anhydride functional group grafted ethylene-vinyl acetate copolymer and maleic anhydride functional group grafted ethylene propylene terpolymer; 85 to 95 parts of base material formed by blending two or more than two of linear low-density polyethylene, ethylene-vinyl acetate copolymer and ethylene propylene terpolymer granular materials; 2 to 6 parts of composite antioxidant composed of the following antioxidants in terms of weight ratio: hindered phenol antioxidants : thiol ester antioxidants = 1 : (2 to 6); 20 to 40 parts of ammonium polyphosphate; 10 to 20 parts of pentaerythritol; 8 to 15 parts of melamine; 50 to 100 parts of composite inorganic fire retardant composed of the following fire retardants: magnesium hydroxide : zinc borate = (2 to 4) : 1; 2 to 6 parts of lubricant; 0 to 0.5 parts of metal passivator; 0 to 3 parts of crosslinking assistant agent; and 0 to 5 parts of halogen-free master batch. The invention has provided a harmless halogen-free inflaming-retarding cable material having high temperature tolerance, high tension, high elongation and high fire resistance.

Description

technical field [0001] The invention relates to a flame-retardant cable material, in particular to a low-smoke halogen-free flame-retardant cable material. Background technique [0002] In 2002, the European Union formulated the "Electronic Waste Disposal Law" with two directives, one of which is the "Directive on Prohibiting the Use of Certain Hazardous Substances in Electrical and Electronic Equipment" (ROHS). The ROHS Directive requires that electrical and electronic products put on the EU market after July 1, 2006 must not contain six harmful substances including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers. Correspondingly, at the beginning of 2004, the Ministry of Information Industry of the People’s Republic of China formulated the Measures for the Prevention and Control of Pollution by Electronic Information Products (referred to as the Measures) in accordance with relevant regulations such as the Cleaner Pr...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L23/16C08L51/06C08K13/02H01B3/18H01B3/28H01B3/44H01B7/295
Inventor 张聪谢庆旭梅超侯海良施冬梅
Owner ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI
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