铁路橡胶产品需要满足火焰烟雾，以及保护人类健康和安全的毒性（FST）标准。燃烧铁轨座椅，地板，墙板和其他内部组件的火灾不仅会立即受伤和死亡。火焰会释放烟雾逃脱路线的烟雾。释放有毒气体的燃烧橡胶也会压倒乘客和员工。
Suppliers offer compounds that meet FST standards, but design engineers still facing a challenging task. The flame, smoke, and toxicity standards for railcar materials vary widely. Designers need to familiarize themselves not just with different standards, but with standards used in different countries. By partnering with the right fabricator, however, you can source the right rubber products for sealing and insulation.
了解FST标准
Some FST standards reference three different tests from ASTM International, a leading international standards organization.
ASTM E162measures surface flammability.
ASTM E662测量烟雾的特定光密度。
ASTM E1354衡量热量和可见烟雾的释放率。
Railcar rubber that passes all three ASTM tests may seem like a logical choice for your application, but these aren’t the only FST standards that apply to the mass transit industry. For example:
SMP 800-C from Bombardier measures toxic gas generation from gas combustion.
NF F F 16-101和NF F 16-102是法国国家铁路组件的国家标准。
BS 6853 is a British national standard for fire-testing railways parts.
浮置板轨道standar其他国家有他们自己的ds for railcar rubber, too. In addition, local or regional transit authorities can adhere to their own specifications. If your company does business in European Union (EU) countries, you may also need to consider how RoHS standards relate to rubber products.
火焰，烟雾和毒性测试
铁轨橡胶的火焰测试可能会有重要差异。例如，ASTM E162测试根据火焰的传播评估轨道材料。相比之下，英国和法国的标准要求弹性体可以承受无点火的热线接触。符合法国和英国需求的铁路橡胶产品也必须满足或超过指定的氧指数。
光学烟密度测试各有不同,但不同ces are not as great. For example, both ASTM E662 and the French standard expose railcar rubber to combustion inside of a closed chamber. To determine the specific optical density, the percentage of light transmission that is lost is recorded. The French standard and ASTM E662 test take these measurements at different time intervals, however.
Toxicity measurements cannot exceed emissions limits for toxic gases or fumes. The French and British standards use the same test method, but the U.K. specification contains an addendum for nitrous oxides, gases that inflame the airways at high concentrations. The French and British standards use their test results to develop a constant, but SMP 800-C from Bombardier contains individual toxic gas requirements.
Railcar Rubber Products: FST and CTG Seals
Elasto Proxy, a leading supplier of custom rubber products for the mass transit industry, can help you to select compounds that meet the specific FST requirements for your railcar application. We also support your material selection process by offering certified transit grade (CTG) rubber that was developed in partnership with a trusted, long-term supplier.
CTG seals from Elasto Proxy are made of an EPDM elastomer that has been tested and certified by an independent laboratory. Elasto Proxy supplied samples or specimens, and the laboratory conducted the following tests according to published standards from ASTM International and Bombardier, Inc.
ASTM E162
ASTM E662
ASTM E1354
SMP 800-C
In addition to meeting these FST requirements, CTG seals add value to your railcar application because Elasto Proxy fabricates these rubber products using water jet cutting and your choice of splicing techniques.
有关我们的轨道橡胶产品的更多信息，请联系Elasto代理。
