說說登月相機膠片耐受溫度的問題

在網上大致查了一下，沒有看到官方的數據，這裏有一些討論。

http://www.clavius.org/bibwgreen.html

The film used was the Ektachrome E-3 emulsion on the special-purpose Estar thin base. Estar is made from polyester and was specially made for high-altitude surveillance photography where it would have to endure temperatures as low as -50 F (-40 C). The E-3 emulsion is good to that temperature and below. Polyester melts at about 550 F (260 C). The emulsion, however, would be rendered chemically ineffective before the emulsion melted.

The film was able to withstand some pretty strong extremes of temperature.

所有跟帖： 

• 謝謝資料~就是沒明確說膠片使用溫度範圍~俺不知道這個為啥這樣難查？可達卷是商品啊~ -qiasini- ♂ (36 bytes) () 11/19/2011 postreply 16:32:18

• 通常情況沒有人用到膠片的耐受溫度， -viewfinder- ♀ (316 bytes) () 11/19/2011 postreply 16:51:19

• 是這麽個道理，但就是不明白為啥不標在商品上，這是一個重要參數，特別對溫度廣的航空卷~ -qiasini- ♂ (178 bytes) () 11/19/2011 postreply 16:57:04

• 問題多啦！真空條件下還有揮發問題，膠卷不隻是膠片，還有其它零件的材料 -iwbb- ♀ (0 bytes) () 11/19/2011 postreply 17:13:25

• 柯達還配合，本來完全可以公開發表的產品數據都成機密了，Hasselblad也配合 -iwbb- ♀ (0 bytes) () 11/19/2011 postreply 17:17:43

• 材料這玩意兒，比如說做膠片用的各種純“酯”和“聚合物”本身是不能用的 -iwbb- ♀ (1536 bytes) () 11/19/2011 postreply 18:29:24

• 準確一點說這是登月相機膠片在地球上的耐受溫度的問題 -iwbb- ♀ (0 bytes) () 11/19/2011 postreply 20:44:06