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High-flame retardant rubber material in extrusion molding and preparation method thereof

A rubber material and extrusion molding technology, which is applied in the field of high flame-retardant rubber materials and its preparation, can solve problems such as the impossibility of preparing rubber products, and achieve good physical and mechanical properties, good flame-retardant properties, and good extrusion properties.

Active Publication Date: 2013-06-12
JIANGYIN HAIDA RUBBER & PLASTIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the ideas in the above patents, it is impossible to prepare extrudable rubber products with higher flame retardancy

Method used

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  • High-flame retardant rubber material in extrusion molding and preparation method thereof
  • High-flame retardant rubber material in extrusion molding and preparation method thereof
  • High-flame retardant rubber material in extrusion molding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]The components and mass parts are: EPM (Keltan 3050), 80 parts; EVM-800, 20 parts; 5 parts of zinc oxide, 1 part of stearic acid, 10 parts of zinc borate, 10 parts of microencapsulated red phosphorus, carbon Black N550, 40 parts; aluminum hydroxide surface-modified with micron epoxy silane coupling agent, 140 parts; paraffin oil KP6030, 30 parts; polyester plasticizer W260 (manufactured by Zhangjiagang Di Ai Sheng Chemical Co., Ltd.), 10 parts; anti-aging agent RD, 1.5 parts; anti-aging agent BLE, 1.5 parts; polyethylene glycol PEG4000, 2 parts; triallyl isocyanurate TAIC, 3 parts; To imide HVA-2, 1 part; dicumyl peroxide DCP, 4 parts.

[0031] The preparation process of Example 1 is as follows: Firstly, the raw rubber matrix is ​​thinly passed on the open mill, and then mixed evenly, and then the roll distance is increased, and the material is added to the roll, and the carbon black, modified hydroxide, and flame retardant synergistic Add plasticizer, plasticizer, co-c...

Embodiment 2

[0033] The components and mass parts are: EPM (EPT 0045), 70 parts; EVM600, 30 parts; zinc oxide, 5 parts; stearic acid, 1 part; zinc borate, 5 parts; red phosphorus, 5 parts; Methylsiloxane PDMS, 10 parts; carbon black SP5000, 50 parts; micron aminosilane coupling agent surface modified magnesium hydroxide, 120 parts, paraffin oil Sunpar2280, 25 parts; trioctyl trimellitate TOTM , 10 parts; Antiaging agent H, 2 parts; Antiaging agent 2246, 1 part; Processing aid RF-70 (produced by Guangzhou Jinchangsheng Technology Co., Ltd.), 2 parts; Triallyl cyanurate (TAC), 2 parts Parts; N,N'-m-phenylene bismaleimide HVA-2, 2 parts; 2,5-Dimethyl-2,5-bis(tert-butylperoxy)hexane (DBPMH), 3 copies.

[0034] The preparation process of Example 2 is as follows: the internal mixer reverse refining method is adopted, that is, carbon black, modified hydroxide, flame retardant synergist, plasticizer and 60% of the raw rubber matrix are uniformly mixed in sequence according to the formula Put it ...

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Abstract

The invention relates to a low-smoke halogen-free high-flame retardant ethylene propylene rubber material in extrusion molding. A preparation method of the rubber material is as follows: uniformly mixing the di-ethylene propylene rubber and ethylene-vinyl acetate copolymer at 100+ / -10 DEG.C by using an open mill or a internal mixer, cooling to the room temperature, orderly adding carbon black, modified mmicron hydroxide, plasticizer, flame retardant synergist, assistant crosslinker and crosslinking agent in proportion, uniformly mixing, adding the rubber compound in a single-screw extruder, controlling the temperature of the extruder body, the screw and the head at 70-90 DEG.C and the revolving speed of the screw within 20-30r / min (revolutions per minute) so that the rubber can be continuously extruded, heating and forming in a direct vulcanizing tank. The retardant ethylene propylene rubber provided by the invention has the advantages of good dynamic performance, low-smoke halogen-free flame retardance and good extrusion performance, and is adapted to a high-flame retardant rubber seal product.

Description

technical field [0001] The invention relates to an extrudable highly flame-retardant rubber material and a preparation method thereof. The material is especially suitable for manufacturing flame-retardant sealing products for subway tracks. Background technique [0002] Ethylene-propylene-diene rubber (EPM) is a copolymer of ethylene and propylene, and its molecular chain is a fully saturated linear structure, which has better heat resistance, weather resistance, and resistance to aging than EPDM. Ozone, chemical resistance, water resistance and good electrical insulation properties. However, unlike ethylene-propylene-diene rubber (EPDM) that introduces a small amount of unsaturated double bonds on the side chain, EPM cannot be cross-linked with a sulfonic vulcanization system; it can only be cross-linked with a peroxide. EVM special rubber is a copolymer of ethylene and vinyl acetate, which has good high temperature resistance, oil resistance (equivalent to nitrile rubber...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/08C08L31/04C08K13/06C08K9/06C08K3/22C08K5/09C08K3/38C08K3/02C08K3/04C08K5/14C08K5/3492C08K5/3415
Inventor 李波江莹倩庄澎高蒙蒙邱鼎峰
Owner JIANGYIN HAIDA RUBBER & PLASTIC GROUP
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