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Fire-proof rubber material for air spring and preparation method thereof, air spring and preparation method thereof

A technology of rubber materials and air springs, applied in the field of polymer materials, can solve problems such as delamination and cracking of substrates, achieve low cost, simple method, and reduce smoke density and smoke toxicity

Inactive Publication Date: 2019-03-08
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 103756546A and Patent CN102239205A disclose a method of coating a flame-retardant elastic coating on the surface of a shock-absorbing rubber product to improve the fire resistance of the product. Although this method has little impact on the original performance of the product, the coating exists in the Risk of delamination and cracking from the substrate under long-term cyclic stress

Method used

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  • Fire-proof rubber material for air spring and preparation method thereof, air spring and preparation method thereof
  • Fire-proof rubber material for air spring and preparation method thereof, air spring and preparation method thereof
  • Fire-proof rubber material for air spring and preparation method thereof, air spring and preparation method thereof

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Embodiment 1

[0047] The preparation method of the air spring in the present embodiment comprises the following steps:

[0048] (1) Add chloroprene rubber, general-purpose solid natural rubber and epoxidized natural rubber into the internal mixer and mix evenly, and the mixing temperature is controlled at 40-80°C; then add magnesium oxide and stearic acid, and mix for 3 Minutes; then add carbon black SP5000, white carbon black, flame retardant nanocomposite (a mixture of melamine cyanurate, ammonium polyphosphate, cage oligosilsesquioxane and organic nano-montmorillonite), tetrabromophthalic anhydride , plasticizer (trioctyl phosphate and dioctyl sebacate) were mixed for 8 minutes, and the mixing temperature was controlled at 70-115°C; then the mixed rubber was cooled to below 60°C, and the vulcanizing agent, accelerator Put the agent together in the internal mixer and knead. When the temperature of the rubber material reaches 95°C or more, the glue is discharged, and the fireproof rubber m...

Embodiment 2

[0051] The preparation method of the air spring in the present embodiment comprises the following steps:

[0052] (1) Add chloroprene rubber, general-purpose solid natural rubber and epoxidized natural rubber into an internal mixer and mix evenly, and the mixing temperature is controlled at 40-80°C; then add magnesium oxide and stearic acid for 3 minutes of mixing ; Then add carbon black SP5000, flame retardant nanocomposite material (the mixture of melamine cyanurate, ammonium polyphosphate, cage oligosilsesquioxane and nano aluminum hydroxide), tetrabromophthalic anhydride ester, plasticizer (phosphoric acid Trioctyl ester and dioctyl sebacate) were mixed for 8 minutes, and the mixing temperature was controlled at 70-115°C; then the mixed rubber was cooled to below 60°C, and the vulcanizing agent and accelerator were added to the internal mixer together Medium mixing, when the temperature of the rubber material reaches above 95°C, the rubber is discharged, and the fireproof ...

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Abstract

The invention discloses a fire-proof rubber material for an air spring. The fire-proof rubber material for the air spring is mainly prepared by raw rubber, a flame-retardant nano composite material, aliquid fire retardant, a plasticizer, an active agent, reinforcement filler, and a vulcanization accelerant, wherein the raw rubber is formed by chloroprene rubber, general solid natural rubber and epoxidized natural rubber, and the flame-retardant nano composite material is a composite nano fire retardant mainly formed by melamine cyanurate, ammonium polyphosphate, polyhedral oligometric silsesquioxane, and organic nano montmorillonite, or the composite nano fire retardant mainly formed by the melamine cyanurate, the ammonium polyphosphate, the polyhedral oligometric silsesquioxane, and nanoaluminum hydroxide. The invention further discloses a preparation method for the fire-proof rubber material. The fire-proof rubber material is capable of keeping a good physical mechanical property of outer rubber of the air spring, and flexing resistance, improving ozone resistance, low-temperature resistance, and oil resistance, and meeting requirements of a European Union rail traffic fire protection standard EN45545-2.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a fireproof rubber material for an air spring and a preparation method thereof, an air spring and a preparation method thereof. Background technique [0002] In the past five years, the fire protection requirements of rail vehicles have become more and more stringent. The EM45545 standard formulated and implemented by the European Union has put forward clear requirements for the air spring airbags of rail vehicle bogies, but the fire performance of the air springs currently manufactured is not up to the standard. According to the requirements of relevant standards, especially in the application of subway vehicles and high-speed trains, the maximum average heat release rate and smoke density after combustion both exceed the standard. [0003] In order to solve the above problems, at present, the fire performance of the air spring airbag is mainly improved by improving ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L7/00C08L15/00C08L83/04C08K13/02C08K3/22C08K5/09C08K3/04C08K3/32B29C35/02
CPCB29C35/02C08K2003/222C08K2003/2296C08K2003/323C08L11/00C08L2201/02C08L2201/08C08L2205/035C08L7/00C08L15/00C08L83/04C08K13/02C08K3/22C08K5/09C08K3/04C08K3/32
Inventor 谭莲影程志杨瑞蒙程海涛杨李核杨军王雪飞黄良平穆洪帅肖程远谢竞慧
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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