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Low-smoke halogen-free flame retardant ethylene propylene rubber cable material at temperature of 125 DEG C and preparation method thereof

A flame retardant cable material, ethylene propylene rubber technology, used in insulated cables, rubber insulators, cables, etc.

Active Publication Date: 2015-04-01
上海至正新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention provides a 125°C low-smoke halogen-free flame-retardant ethylene-propylene rubber cable material and its preparation method, which solves the technical problem of ethylene-propylene rubber halogen-free flame-retardant that has long been desired by those skilled in the art but has not been overcome.

Method used

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  • Low-smoke halogen-free flame retardant ethylene propylene rubber cable material at temperature of 125 DEG C and preparation method thereof
  • Low-smoke halogen-free flame retardant ethylene propylene rubber cable material at temperature of 125 DEG C and preparation method thereof
  • Low-smoke halogen-free flame retardant ethylene propylene rubber cable material at temperature of 125 DEG C and preparation method thereof

Examples

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Effect test

preparation example Construction

[0075] The preparation method of the halogen-free flame-retardant cable material of the present invention is described in detail below:

[0076] The present invention also provides a preparation method for preparing the halogen-free flame-retardant cable material of the present invention, the preparation method comprising the following steps:

[0077] (a) mixing ammonium polyphosphate (APP), pentaerythritol (PT), and melamine (M) according to the weight ratio of (10-20): (2-8): (10-30);

[0078] (b) mixing the mixed flame retardant with ethylene-propylene rubber, compatibilizer, magnesium hydroxide, flame retardant synergist and optional other components and extruding into pellets;

[0079] The ethylene propylene rubber is EPDM rubber, wherein the ethylene content is 55-75%, the compatibilizer is EPDM rubber grafted with maleic anhydride, and the flame retardant synergist is zinc borate , a combination of ammonium octamolybdate and polydimethylsiloxane.

[0080] In step (b),...

Embodiment 1

[0105] Each component name and each component parts by weight of embodiment 1 formula are as shown in table 1:

[0106]

[0107] The preparation method of halogen-free flame-retardant ethylene-propylene rubber cable material comprises the following process steps:

[0108] Mix ammonium polyphosphate (APP), pentaerythritol (PT), and melamine (M) in an internal mixer at 120-130°C for 5-10 minutes, and then mix with EPDM rubber, compatibilizer, hydrogen Magnesium oxide, flame retardant synergist, white carbon black, zinc oxide, stearic acid, anti-aging agent, processing aid, surface modifier, crosslinking agent and crosslinking auxiliary agent are extruded and granulated according to the proportioning, to obtain the described 125℃ low-smoke halogen-free flame-retardant ethylene-propylene rubber cable compound. The four temperature sections in the extrusion granulation process are: feeding section 105-115°C, conveying section 115-125°C, melting section 125-135°C, head 130-140°C...

Embodiment 2

[0111] The name of each component and the parts by weight of each component are as shown in Table 2:

[0112]

[0113] The preparation method of the above-mentioned cable material is the same as that of Example 1.

[0114] The product in Example 2 is subjected to a performance detection test, and each performance value is as shown in Table 7 of the performance example.

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Abstract

The invention provides a heat-resisting low-smoke halogen-free flame retardant cable material which can be used for a long time at the temperature of 125 DEG C. The cable material comprises ethylene propylene rubber, compatibilizer, magnesium hydroxide, mixed fire retardant and flame retardant synergist. The mixed fire retardant is a combination of ammonium polyphosphate (APP), pentaerythrite (PT) and melamine (M). The weight ratio of the APP to the PT and the M is (10-20): (2-8): (10-30). The halogen-free flame retardant ethylene propulene rubber cable material is good in thermal aging resistance, can be used for a long time at the temperature of 125 DEG C, and is very soft, excellent in comprehensive mechanical performance and good in flame retardant performance.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant cable material and a preparation method thereof, in particular to a 125°C low-smoke halogen-free flame-retardant ethylene-propylene rubber cable material and a preparation method thereof. The halogen-free flame-retardant ethylene-propylene rubber cable material of the present invention has good heat aging resistance, can be used for a long time under the condition of 125°C, is very soft, has superior comprehensive mechanical properties, and has good flame-retardant performance. Background technique [0002] Ethylene-propylene rubber has excellent electrical insulation properties, such as low dielectric loss, high resistance to partial discharge and resistance to intermolecular ionization, and also has properties such as ozone resistance, water resistance, and weather aging resistance, making it popular in the cable industry The scope of application is more and more extensive. However, like most p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L51/06H01B3/28H01B7/295C08K13/02C08K3/22C08K3/32C08K5/053C08K5/3492C08K3/36C08K5/09
CPCC08L23/16C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/02C08L2205/035H01B3/28C08L51/04C08L83/04C08L23/06C08K13/02C08K2003/323C08K5/053C08K5/34922C08K3/38C08K3/28C08K2003/2224C08K3/36C08K2003/2296C08K5/09C08K5/14
Inventor 刘飞伟宋刚
Owner 上海至正新材料有限公司
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