Now the transportation systems of Europe and North America are further studying the plastic sleeper.
Polyethylene plastic ties, it has the environmental protection, can be recycled, corrosion resistance is higher than wood blocking more than three times, longer service life, the electricity off green, a good weathering resistance, has good vibration absorbing and damping on noise, high crushing strength and chemical resistance of liquid or gas is strong, can also anti-uv, flood water resistant, within the scope of the - 40 ~ 70 ℃, sleeper material also is not affected by temperature and moisture.
聚乙烯塑料轨枕虽然在国内应用少，但在欧洲已成功使用了二十多年。奥地利首先为它的国内城市运输系统生产了强化的聚氨基甲酸乙酯轨枕，自此以后，这种塑料轨枕逐渐被应用在意大利的米兰、瑞士的苏黎世和联邦德国的汉诺威等运输线路上。
塑料轨枕正在被用于无碴桥梁和高架桥结构上，有利于减少恒载。
现在欧洲和北美的运输系统正在进一步地研究塑料轨枕。
聚乙烯塑料枕木，它具有环保、可回收再利用、耐腐蚀性高于木枕三倍以上、使用寿命更长、对电的绝绿性, 有好的抗风化性能, 对噪声有良好的吸振性和阻尼、抗压碎强度高、对液体或气体的抗化学能力强，也能抗紫外线，抗潮抗水，在-40~70℃范围内,轨枕材料也不受温度和湿气的影响。
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