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小木虫论坛-学术科研互动平台 » 科研生活区 » English Cafe » Opinion » 【Discussion】anyone could tell me the reasons
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poyoro

木虫 (文坛精英)

[交流] 【Discussion】anyone could tell me the reasons

Yesterday I found some cards  have changed colour. They become yellowish, lost luster. It looks bad
I put  these cards in the drawer.  
Is this an inevitable process or does properly maintaining cards prevent from happening?

卡颜色变得暗黄，不知道什么原因，是放在抽屉里的，大概集了8年，一般寒暑假都有拿出来，
这种颜色变化是不是必然的？有没有什么方法可以保持好。


这里看看 这些颜色，多数是正面颜色变化不大，反面很糟糕，






this card white turn to yellow.


以前都没发现 ，看到后很难过，没有好好保护变成这样了。




anyone could tell me the reasons ? Thank you.

[ Last edited by poyoro on 2011-2-25 at 14:02 ]
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1楼 2011-02-25 14:00:15
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mooncakexzj

荣誉版主 (文坛精英)
poyoro(金币+1): :tiger39: 2011-02-25 17:20:24
引用回帖:
Originally posted by poyoro at 2011-02-25 14:00:15:
Yesterday I found some cards  have changed colour. They become yellowish, lost luster. It looks bad
I put  these cards in the drawer.  
Is this an inevitable process or does  ...

hahaha，take care of it
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5楼2011-02-25 14:06:04
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wangwing

铁杆木虫 (文坛精英)
poyoro(金币+1): :tiger22: 2011-02-25 17:20:45
sorry
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6楼2011-02-25 14:10:16
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winzhouyun

铜虫 (职业作家)
★ ★ ★
poyoro(金币+5): :tuzi3::tuzi3::tuzi3: 2011-02-25 14:30:55
xia_chong(金币+3): I peifu you! :D 2011-02-25 18:01:05
植物中含有纤维素、木素和色素。在造纸过程中，将植物茎杆(如稻草)经过碱煮，木素和色素溶于碱液中，被水洗除去，但是难得除干净，纸浆里面仍含有少量的木素和色素。这些木素和色素在 阳光和空气的作用下，逐渐发生了变化，使得纸变 ； 黄变脆。
Plants contain cellulose, lignin and pigment. In the papermaking process, the plant stems (such as straw) after alkaline cooking, and pigments dissolved in alkali lignin, was washed to remove, but a rare addition to clean, which still contains a small amount of pulp lignin and pigment. The lignin and pigment under the action of sunlight and air, and gradually changed, making paper, variable; yellow brittle.
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7楼2011-02-25 14:21:20
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poyoro

木虫 (文坛精英)
引用回帖:
Originally posted by winzhouyun at 2011-02-25 14:21:20:
植物中含有纤维素、木素和色素。在造纸过程中，将植物茎杆(如稻草)经过碱煮，木素和色素溶于碱液中，被水洗除去，但是难得除干净，纸浆里面仍含有少量的木素和色素。这些木素和色素在 阳光和空气的作用下，逐渐发 ...

in the drawer. no sunshine little air.
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8楼2011-02-25 14:29:49
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kong我就是我

木虫 (职业作家)
poyoro(金币+5): It seems to make sense 2011-02-25 15:00:31
It's rare and commendable that you could conserve so many cards for so long a time! I dumped them immediately after their missions. May be I should learn from you, they are really memorable!
I suggest you to  keep them away from air and light in a container with powerful vaccum effect
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10楼2011-02-25 14:47:20
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winzhouyun

铜虫 (职业作家)
引用回帖:
Originally posted by poyoro at 2011-02-25 14:29:49:
in the drawer. no sunshine little air.

oxygenation doesn't need sunshine, it needs oxygen.  u should make a glass box which is vaccum.
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11楼2011-02-25 14:53:42
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xiaohu918

禁虫 (正式写手)
poyoro(金币+2): OK tks 2011-02-25 15:01:34
本帖内容被屏蔽
12楼2011-02-25 14:55:45
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spc08

荣誉版主 (文学泰斗)
poyoro(金币+2): :tuzi13: 2011-02-25 17:15:58
lppv: only english here.welcome all the same, next time, english o . 2011-02-25 17:29:16
塑料的自然老化
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14楼2011-02-25 15:57:11
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bcnner

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poyoro(金币+5): tomorrow i will go to school. ...hope you can come Emuch as often as you can . :tuzi12: 2011-02-25 17:18:10
lppv: how to say 塑料老化 in english? you could try it. 2011-02-25 17:30:28
塑料老化，是塑料的特性之一。http://bbs.ourplas.cn/read.php?tid=17949
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15楼2011-02-25 16:17:20
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Risingstar

铁杆木虫 (著名写手)
poyoro(金币+5): 谢谢 :tiger38: 2011-02-25 17:32:13
引用回帖:
Originally posted by poyoro at 2011-02-25 14:29:49:
in the drawer. no sunshine little air.

Pity!

Prob'ly OXIDATION happens since there's water and oxygen in the drawer, not necessarily with the presence of sunlight.

The cards weather, yet the memories sweeten.
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19楼2011-02-25 17:30:16
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xia_chong

金虫 (文坛精英)
poyoro(金币+1): It's one of my hobbies, they are very beautiful, I love them 2011-02-25 18:09:00
I am surprised to find that you have collected so many cards.
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20楼2011-02-25 18:01:48
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xuediandongxi

铁杆木虫 (著名写手)
poyoro(金币+3): ok 2011-02-25 18:49:05
clean the card carefully using soft cloth before keeping them into the drawer, and open the drawer frequently to keep the drawer dry.
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22楼2011-02-25 18:35:57
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zdd2008

金虫 (职业作家)
帮顶
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23楼2011-02-25 18:49:35
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lppv

荣誉版主 (文坛精英)
引用回帖:
Originally posted by javy023 at 2011-02-25 18:30:11:
找个密封袋密封，与空气中的氧氧气反应老化了，这个正常

you are supposed to speak english here,thanks.
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25楼2011-02-25 19:18:46
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zhangy3030

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It‘s Oxidized~
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26楼2011-02-25 19:20:06
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javy023

木虫 (职业作家)
引用回帖:
Originally posted by lppv at 2011-02-25 19:18:46:
you are supposed to speak english here,thanks.

sorry.i ignored
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27楼2011-02-25 19:33:09
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zyxme

至尊木虫 (文坛精英)
i cannot tell you,sorry
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28楼2011-02-25 19:33:50
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lppv

荣誉版主 (文坛精英)
引用回帖:
Originally posted by javy023 at 2011-02-25 19:33:09:
sorry.i ignored

you are so funny, i did not push you to change it. i just remind you yixiaxia.

that is ok. i did not mean to make you uncomfortable.
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29楼2011-02-25 19:36:53
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javy023

木虫 (职业作家)
引用回帖:
Originally posted by lppv at 2011-02-25 19:36:53:
you are so funny, i did not push you to change it. i just remind you yixiaxia.

that is ok. i did not mean to make you uncomfortable.

i don't say english long time,i can't express my word ,please understand me
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30楼2011-02-25 19:41:35
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lppv

荣誉版主 (文坛精英)
引用回帖:
Originally posted by javy023 at 2011-02-25 19:41:35:
i don't say english long time,i can't express my word ,please understand me

that is ok, i can understand.

be happy here.
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31楼2011-02-25 19:43:27
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zzyanzz

铜虫 (正式写手)
why?
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32楼2011-02-25 19:43:53
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javy023

木虫 (职业作家)
引用回帖:
Originally posted by lppv at 2011-02-25 19:43:27:
that is ok, i can understand.

be happy here.

i just read it ,not reply
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33楼2011-02-25 19:45:05
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zhangwei19

荣誉版主 (文学泰斗)
it  must   chang  colour
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34楼2011-02-25 20:00:49
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无才

至尊木虫 (知名作家)
用塑料袋封好或者直接压膜
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35楼2011-02-25 20:07:45
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cpuyxj

金虫 (正式写手)
poyoro(金币+2): 2011-03-23 00:04:11
把你收藏的卡用卡套装起来，隔绝空气就不会被氧化变黄了。你可能会发现，压在玻璃板下面的纸有一个角露在外面，发黄了，而在玻璃下面的确却很白哦
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38楼2011-02-26 16:22:06
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yuanhaiwei

新虫 (正式写手)
poyoro(金币+2): It's not a inevitable process :tuzi32: 2011-03-23 00:04:50
It is an inevitable process !don't care about it !
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39楼2011-02-26 18:59:45
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wangyeliu

木虫 (著名写手)
poyoro(金币+5): OK 2011-02-26 23:06:50
The reason why the cards fade is that the chemical which was used in the cards to improve the whiteness had been changed or reacted due to the long-term contact with air. Sunlight will obviously accelerate this progress. The same thing would happen to books, white wall, white clothes etc.

[ Last edited by wangyeliu on 2011-2-26 at 20:50 ]
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40楼2011-02-26 20:49:13
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xuediandongxi

铁杆木虫 (著名写手)
poyoro(金币+1): no way :cool: 2011-02-28 11:31:27
poyoro(金币+4): 2011-03-23 00:05:13
This time I do not want to talk about the color change. I am concered about the gold coins you left. I think, if you do not distribute them to us, I am afraid that the left gold coins (BBs) may also change their colors in you hands. So i suggest you give it to me more if you like.
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41楼2011-02-28 05:52:12
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monica_911

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poyoro(金币+1): 2011-03-23 00:05:19
you have so many cards!
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42楼2011-02-28 14:36:52
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匿名

用户注销 (正式写手)
poyoro(金币+1): 2011-03-23 00:05:24
本帖仅楼主可见
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43楼2011-02-28 16:59:01
已阅   申请ESEPI   回复此楼   编辑   查看我的主页

飞翔在蓝天

木虫 (正式写手)
使他们不与空气接触应该好些
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45楼2011-03-01 21:12:53
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xuediandongxi

铁杆木虫 (著名写手)
Your post has been covered by other newly presented posts. And 35 gold conins are still left. So I decide at once to help you to place it on the top of all posts. This is the aim of writing this response. I am sure I do not want to get extra coins this time. I am just as a volunteer and do not ask for money.
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46楼2011-03-02 04:39:35
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春暖化开

金虫 (知名作家)
poyoro(金币+1): 2011-03-23 00:05:39
maybe ,Too long, fade out
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47楼2011-03-02 08:30:10
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mengding1987

金虫 (正式写手)
poyoro(金币+1): 2011-03-23 00:05:44
sorry,i don't know clearly.but,i think you are best put them at dry environment
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48楼2011-03-02 09:45:24
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zhangxn2010

木虫 (著名写手)
poyoro(金币+2): 2011-03-23 00:05:49
They've got oxadated,the best way to keep them is preventing them from air.
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50楼2011-03-02 12:41:23
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简单回复
suifengpig2楼
2011-02-25 14:00   回复  
小木虫(沙发+1，金币+0.5):恭喜抢个沙发，再给个红包
poyoro(金币+1): :tiger19: 2011-02-25 17:19:20
nono20093楼
2011-02-25 14:01   回复  
小木虫(金币+0.2):抢了个小板凳，给个红包
poyoro(金币+1): :tiger19: 2011-02-25 17:19:27
liubing0414楼
2011-02-25 14:01   回复  
poyoro(金币+1): :tiger19: 2011-02-25 17:19:32
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2011-02-25 14:44   回复  
poyoro(金币+1): :tiger19: 2011-02-25 17:21:03
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2011-02-25 15:40   回复  
poyoro(金币+1): :rol::rol::rol: 2011-02-25 17:21:26
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2011-02-25 16:19   回复  
poyoro(金币+1): :rol::rol::rol: 2011-02-25 17:21:33
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2011-02-25 16:21   回复  
poyoro(金币+1): :rol::rol::rol::rol::rol::rol: 2011-02-25 17:21:38
lovewalle18楼
2011-02-25 16:34   回复  
poyoro(金币+1): :rol::rol::rol::rol::rol::rol::rol::rol::rol: 2011-02-25 17:21:43
javy02321楼
2011-02-25 18:30   回复  
poyoro(金币+1): OK 2011-02-25 18:48:38
[ Last edited by javy023 on 2011-2-25 at 19:33 ]
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