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Halogen-free flame retardant ethylene propylene diene monomer (EPDM) material and preparation method thereof

A technology of EPDM rubber and flame retardant, applied in the field of halogen-free flame retardant EPDM rubber materials and preparation, can solve the problem of low flame retardant performance, not reaching UL-94V-0 level, flame retardant three The problem of small molecule precipitation in ethylene-propylene rubber materials has achieved the effect of broadening the scope of application and improving the flame retardant performance.

Active Publication Date: 2010-12-29
SHANGHAI RES INST OF CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patents CN200310106228.0 and CN200610116018.3 all disclose some related flame retardants and flame retardant methods. However, the flame retardant properties that can be achieved by using these methods are low and cannot reach the level of UL-94V-0. And there are some organic low-molecular compounds added, resulting in the precipitation of some small molecules in the flame-retardant EPDM material obtained.

Method used

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  • Halogen-free flame retardant ethylene propylene diene monomer (EPDM) material and preparation method thereof
  • Halogen-free flame retardant ethylene propylene diene monomer (EPDM) material and preparation method thereof

Examples

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Embodiment 1～13 and comparative example 1、2

[0024] See Table 1 and Table 2. The compounding components of the rubber materials listed in the table are the values ​​based on 100 parts by mass of EPDM rubber. According to the ratio specified in Table 1 and Table 2, the expansion type halogen-free Flame retardant, EPDM rubber / montmorillonite nanocomposite (commercially available) and part of phosphonate are premixed in a high-speed mixer, and the premixed phosphonate accounts for 40% of the amount of phosphonate added~ 60%, the mixing speed is 5000 rpm, and the mixing time is 20-50 minutes, then extrude the EPDM rubber, the flame retardant mixture obtained above, the remaining phosphonate, the crosslinking agent, and the filler with an extruder Mixing, the mixing temperature is 150 ~ 220 ℃. During this extrusion mixing process, the crosslinking agent and the remaining phosphonate are added from the side feeding port of the extruder, and the remaining materials are fed from the feeding port of the extruder. Then injection ...

Embodiment 3

[0027] The third monomer of the EPDM rubber described in Example 3 is ethylidene norbornene (ENB), the ethylene content is 45%, and the Mooney viscosity value is 25; the expansion type halogen-free flame retardant is a three-source matching Expansion system ANTI-6 (produced and sold by Shanghai Research Institute of Chemical Industry); the particle size of EPDM rubber / montmorillonite nanomaterial is 70nm. Others are listed in Table 1.

[0028] The third monomer of the EPDM rubber described in Examples 4 and 5 is dicyclopentadiene (DCPD), the ethylene content is 80%, and the Mooney viscosity value is 90; the expansion type halogen-free flame retardant is three sources Matching expansion system JLA-PNP1 (produced and sold by Hangzhou Jieersi Flame Retardant Chemical Co., Ltd.); the particle size of EPDM / montmorillonite nanomaterials is 80nm. Others are listed in Table 1.

[0029] The third monomer of the EPDM rubber described in Examples 6 and 7 is 3,7-dimethyl-1,6-octadiene, ...

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Abstract

The invention discloses a halogen-free flame retardant ethylene propylene diene monomer (EPDM) material and a preparation method thereof. The halogen-free flame retardant EPDM material comprises the following components in parts by mass: 100 parts of EPDM, 20-50 parts of intumescent halogen-free retardant agent, 0.1-10 parts of cross linking agent, 8-50 parts of phosphonate, 0.1-10 parts of EPDM / montmorillonite nanocomposite and 0.1-7 parts of filler. Because the material adopts intumescen halogen-free retardant agent and EPDM / montmorillonite nanocomposite in the combination, the EPDM material has favourable fire retardance and obtains the standard of UL-94 V-0 level.

Description

technical field [0001] The invention relates to the compounding and processing technology of polymer materials in the field of chemical industry, in particular to a halogen-free flame-retardant EPDM material and a preparation method. Background technique [0002] With the wide application of flame retardant polymer materials in daily life, the development of new flame retardants has also become a research hotspot. [0003] Since 1986, there has been controversy in the field of flame retardants about the toxicity and environmental impact of polybrominated diphenyl ether flame retardants and high polymers that use such flame retardants when they are burned and degraded at high temperatures , the European Commission adopted a proposal to ban the use of brominated flame retardants such as pentabromodiphenyl ether (PBDPO) and octabromodiphenyl ether (OBDPO). Finally, on January 27, 2003, the "Waste Electrical and Electronic Equipment Directive" (WEEE-200296EC) and the "Directive...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/02C08K5/14C08K5/521B29C47/92B29C48/92
Inventor 刘彦明郝冬梅陈崇伟尹亮陈涛林倬仕
Owner SHANGHAI RES INST OF CHEM IND
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