| 查看: 1119 | 回复: 2 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
yongbinz金虫 (著名写手)
|
[求助]
急求汉译英一段话，100金币，谢绝软件翻译！
|
|
| 如图7所示，以DMA图中Tanδ曲线上的峰顶温度表示各PI的玻璃化转变温度，这些薄膜的玻璃化转变温度出现在305－433℃的高温范围内，表明所有聚合物均具有优异的热稳定性。均聚物A出现两个明显的损耗峰，对应于两个玻璃化转变。由WAXD的结论，我们知道均聚物A具有较高的有序度，因此，我们推断，在低温区的高Tanδ损耗峰对应于无定型区的玻璃化转变（304℃），而在高温区的低Tanδ损耗峰则对应于其结晶或有序区的分子链松弛转变（410℃）。均聚物E只在433℃处出现一个玻璃化转变，这与以前的研究结果相符[4]。所有共聚物的DMA曲线图中均只出现一个明显的Tan损耗峰，说明它们均形成了无规共聚物，即BDA/OA与BDA/IA链段沿着共聚物分子链进行了无规排列。对应于均聚物A的结晶或有序区内分子链运动的玻璃化转变（约为410℃）的Tanδ损耗峰在共聚物中消失了，这可能归因于共聚物的有序度太小，因而其在有序区内的无定型分子链的玻璃化转变不明显。共聚物B、C、D的玻璃化转变温度分别为339、372、387℃，表明玻璃化转变温度随着共聚物中BOA含量的减少而增加。由红外结论，酰胺结构的引入使聚酰亚胺体系内氢键相互作用增强，因此，玻璃化转变温度的增加归因于共聚物分子链间相互作用的增强。 |
回复此楼» 猜你喜欢
0703 总分319求调剂
已经有3人回复
-
化工京区271求调剂
已经有5人回复
-
欢迎采矿、地质、岩土、计算机、人工智能等专业的同学报考
已经有8人回复
-
化学，材料，环境类求调剂
已经有4人回复
-
接收调剂
已经有12人回复
-
085600求调剂
已经有3人回复
-
考研复试调剂，过国家线的同学都可报名
已经有5人回复
-
085600 英一数二272求调剂
已经有13人回复
-
理学，工学，农学调剂，少走弯路，这里欢迎您！
已经有5人回复
-
一志愿华南理工大学材料与化工326分，求调剂
已经有3人回复
【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
sltmac(金币+50): 2011-12-28 10:40:59
sltmac(金币+50, 翻译EPI+1): 欢迎常来本版交流 2011-12-28 10:41:13
sltmac(金币-40): 2011-12-31 09:02:10
sltmac(金币-10): 翻译一半 2011-12-31 09:02:30
sltmac(金币+50): 2011-12-28 10:40:59
sltmac(金币+50, 翻译EPI+1): 欢迎常来本版交流 2011-12-28 10:41:13
sltmac(金币-40): 2011-12-31 09:02:10
sltmac(金币-10): 翻译一半 2011-12-31 09:02:30
|
as DMA in Fig7 show, the peak temperature of the Tanδ curve represent the vitrification transformation temperature of each PI which ranges in high temperature of 305~433℃ indicate that all the polymer provided with a excellent hermostability. There are two obvious loss peak in Homopolymer A correspond to two vitrification transformation. We know that there are a high extent ordering in Homopolymer A from WAXD’s conclusion .since we conclude that the high Tanδ loss peak in low temperature area correspond to vitrification transformation of undefined area. Moreover , the low Tanδ loss peak in high temperature area correspond to relaxation transformation of crystallization and ordered area. There are only one vitrification transformation in Homopolymer E which is consist with the result of the former research. There are only one obvious tan loss peak appeard in all DMA curve indicate that all the Homopolymer have formed ruleless Homopolymer. 没时间了 先翻这么多吧 |
2楼2011-12-11 12:35:58
【答案】应助回帖
★ ★
爱与雨下(金币+2): 2011-12-12 08:35:42
爱与雨下(金币+2): 2011-12-12 08:35:42
|
as DMA in Fig7 show, the peak temperature of the Tanδ curve represent the vitrification transformation temperature of each PI which ranges in high temperature of 305~433℃ indicate that all the polymer provided with a excellent hermostability. There are two obvious loss peak in Homopolymer A correspond to two vitrification transformation. We know that there are a high extent ordering in Homopolymer A from WAXD’s conclusion .since we conclude that the high Tanδ loss peak in low temperature area correspond to vitrification transformation of undefined area. Moreover , the low Tanδ loss peak in high temperature area correspond to relaxation transformation of crystallization and ordered area. There are only one vitrification transformation in Homopolymer E which is consist with the result of the former research. There are only one obvious tan loss peak appeard in all DMA curve indicate that all the Homopolymer have formed ruleless Homopolymer. 没时间了 先翻这么多吧 |
3楼2011-12-11 12:36:33
30