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塑胶跑道是用什么材料做的

标签:塑胶跑道?? ?发布时间:2020-03-03
      塑胶跑道材料由聚氨酯预聚体、混合聚醚、废轮胎橡胶、EPDM橡胶?;騊U颗粒、颜料、助剂、填料组成。塑胶跑道具有平整度好、抗压强度高、硬度弹性适当、物理性能稳定的特性,有利于运动员速度和技术的发挥,有效地提高运动成绩,降低摔伤率。塑胶跑道是由聚氨酯橡胶等材料组成的,具有一定的弹性和色彩,具有一定的抗紫外线能力和耐老化力是国际上公认的最佳全天候室外运动场地坪材料。

塑胶跑道
 
    1)、聚氨酯塑胶材料出厂时只是半成品,需要现场反应固化成型,化学反应的效果同材料配比、材料混合均匀程度、反应环境温度及湿度等因素有关,现场施工时,塑胶跑道亚博ag真人质量的控制受到诸多因素的影响,这会容易造成施工质量事故的发生。
 
塑胶跑道

        2)、聚氨酯塑胶材料应用于田径场地的铺设已有30多年的历史。生产聚氨酯塑胶材料的主要原材料是:TDI(或MDI)、聚醚多元醇等原料。理论上来看,在聚氨酯塑胶材料生产过程和现场施工过程会有一些废气产生,污染环境,但当亚博ag真人固化30天以后,成品基本上都能达到相关的环保要求。并且聚氨酯塑胶弹性体的物理性能相当优良,是很理想的田径场面层的铺装材料。但是,实际情况是,目前国内聚氨酯塑胶材料市场竞争相当激烈,低价恶性竞争情况常有;生产商为了降低成本,只能多添加一些廉价的无机填充料和有机溶剂。有机溶剂不会参与固化反应,它以游离状态存在于塑胶跑道之中,最终会慢慢地挥发出来。这样作的结果是,塑胶跑道亚博ag真人质量降低了,亚博ag真人变得不环保了。按有机溶剂含量为3%计算,铺设面积为7800㎡的混合型塑胶跑道需要聚氨酯材料70吨以上,要挥发出来的有机溶剂接近2100公斤。根据化工词典对苯类溶剂毒性的描述:有毒,对皮肤和黏膜刺激性大,对神经系统作用有不良影响,长期接触有引起膀胱癌的可能。当人们普遍认识到,聚氨酯塑胶跑道对他们的工作和生活环境会造成较大的污染时,聚氨酯塑胶跑道的市场前景一定会受到很大的影响。
 

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