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【Discussion】anyone could tell me the reasons
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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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5楼2011-02-25 14:06:04
6楼2011-02-25 14:10:16
★ ★ ★
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
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.   |
7楼2011-02-25 14:21:20
8楼2011-02-25 14:29:49
poyoro(金币+5): It seems to make sense 2011-02-25 15:00:31
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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  |
10楼2011-02-25 14:47:20
11楼2011-02-25 14:53:42
poyoro(金币+2): OK tks 2011-02-25 15:01:34
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本帖内容被屏蔽 |
12楼2011-02-25 14:55:45
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
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 |
14楼2011-02-25 15:57:11
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
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 |
15楼2011-02-25 16:17:20
19楼2011-02-25 17:30:16
20楼2011-02-25 18:01:48
22楼2011-02-25 18:35:57
23楼2011-02-25 18:49:35
25楼2011-02-25 19:18:46
It‘s Oxidized~ 26楼2011-02-25 19:20:06
27楼2011-02-25 19:33:09
28楼2011-02-25 19:33:50
29楼2011-02-25 19:36:53
30楼2011-02-25 19:41:35
31楼2011-02-25 19:43:27
32楼2011-02-25 19:43:53
33楼2011-02-25 19:45:05
34楼2011-02-25 20:00:49
35楼2011-02-25 20:07:45
38楼2011-02-26 16:22:06
39楼2011-02-26 18:59:45
poyoro(金币+5): OK 2011-02-26 23:06:50
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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 ] |
40楼2011-02-26 20:49:13
poyoro(金币+1): no way :cool: 2011-02-28 11:31:27
poyoro(金币+4): 2011-03-23 00:05:13
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. |
41楼2011-02-28 05:52:12
42楼2011-02-28 14:36:52
43楼2011-02-28 16:59:01
45楼2011-03-01 21:12:53
| 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. |
46楼2011-03-02 04:39:35
47楼2011-03-02 08:30:10
48楼2011-03-02 09:45:24
50楼2011-03-02 12:41:23
简单回复
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
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
poyoro(金币+1): :tiger19: 2011-02-25 17:19:27
2011-02-25 14:01
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poyoro(金币+1): :tiger19: 2011-02-25 17:19:32
飞的猪9楼
2011-02-25 14:44
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poyoro(金币+1): :tiger19: 2011-02-25 17:21:03
dhd99713楼
2011-02-25 15:40
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poyoro(金币+1): :rol::rol::rol: 2011-02-25 17:21:26
liufawen16楼
2011-02-25 16:19
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poyoro(金币+1): :rol::rol::rol: 2011-02-25 17:21:33
erics08017楼
2011-02-25 16:21
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poyoro(金币+1): :rol::rol::rol::rol::rol::rol: 2011-02-25 17:21:38
lovewalle18楼
2011-02-25 16:34
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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
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poyoro(金币+1): OK 2011-02-25 18:48:38
[ Last edited by javy023 on 2011-2-25 at 19:33 ]
witch_girl24楼
2011-02-25 19:02
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87909935936楼
2011-02-25 22:20
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chenbin陈斌37楼
2011-02-26 00:05
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200512723944楼
2011-02-28 17:06
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日月教主49楼
2011-03-02 11:40
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