Silane self-crosslinking low-smoke halogen-free flame-retardant polyolefin oil-resistant elastomer material, and preparation method and application thereof

Abstract

The invention discloses a silane self-crosslinking low-smoke halogen-free flame-retardant polyolefin oil-resistant elastomer material, and a preparation method and application thereof. The elastomer material comprises a material A and a material B. The material A comprises a master batch, linear low-density polyethylene, a silane coupling agent and a first initiator, and the master batch comprises ethylene propylene diene monomer, an inorganic flame retardant, vinyl silicone rubber, a lubricant, a dispersing agent, an antioxidant and a second initiator; and the material B comprises the ethylene propylene diene monomer, linear low-density polyethylene, the inorganic flame retardant, the vinyl silicone rubber, the lubricant, the dispersant, the antioxidant and a catalyst. The preparation method comprises the following steps: mixing and banburying the master batch in the material A, extruding and granulating to prepare master batches, mixing and grafting the prepared master batches and other raw materials, and extruding and granulating to prepare the material A; and mixing and banburying the components in the material B, and extruding and granulating to prepare the material B. The elastomer material disclosed by the invention has the properties of low hardness, high oil resistance, high and low temperature resistance, water resistance, flame retardance, low smoke, zero halogen and the like, can be self-crosslinked by silane, and is suitable for rail transit wires and cables.

Description

technical field [0001] The present invention relates to silane self-crosslinking low-smoke, halogen-free, flame-retardant polyolefin materials, in particular to silane self-crosslinking, low-smoke, halogen-free, and flame-retardant polyolefin materials with properties such as low hardness below 90A, oil resistance, temperature resistance, and water resistance. It relates to a silane self-crosslinking low-smoke halogen-free flame-retardant polyolefin oil-resistant elastomer material and a preparation method and application thereof. Background technique [0002] In recent years, with the development of the economy and society, the proportion of rail transit in daily travel vehicles has become higher and higher, and passengers have higher and higher requirements for comfort. For example, the passenger space needs to be enlarged as much as possible. It is beneficial to move and stretch the body, but in a limited space, when the seating space is enlarged, the equipment space is r...

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Problems solved by technology

[0002] In recent years, with the development of the economy and society, the proportion of rail transit in daily travel vehicles has become higher and higher, and passengers have higher and higher requirements for comfort. For example, the passenger space needs to be enlarged as much as possible. It is beneficial to move and stretch the body, but in a limited space, when the seating space is enlarged, the equipment space is required to be reduced, such as the discharge of wires and cables. In order to adapt to the narrow equipment space, it is required that the wires and cables can Bending to fit the wiring in a narrow space, materials with a smaller bending radius (low hardness, crack resistance) are preferred, and properties such as high oil resistance, high and low temperature resistance, water resistance, flame retardancy, low smoke and halogen-free are also required, and the current materials Especially silane self-crosslinking materials are more or less deficient in some of the above properties

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