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塑料件釋放塑化劑侵蝕珍貴宇航服

   2011-07-08 IP屬地 山東
  美國宇航局在太空探索領(lǐng)域開拓創(chuàng)新傳統(tǒng)的珍貴遺產(chǎn)正在開始支離破碎,而塑料是罪魁禍?zhǔn)字弧?br />            

  曾由知名宇航員穿過的宇航服,比如Gene Cernan在1966年進(jìn)行具開創(chuàng)性的太空漫步時(shí)穿過的,正因宇航服上的PVC冷卻管而遭到破壞,這些冷卻管正在慢慢溶出酸性的塑化劑,在衣服上留下磚紅色的污漬。
           

  宇航服的橡皮墊也在不斷降解。化學(xué)家們正千方百計(jì)地對(duì)這一降解過程展開研究,以便在日后的宇航服設(shè)計(jì)中避免出現(xiàn)同樣的問題。
              

  目前美國宇航局正對(duì)約270套宇航服進(jìn)行修復(fù)。
 

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