| 查看: 248 | 回复: 2 | |||
| 当前主题已经存档。 | |||
david_2006木虫 (正式写手)
|
[交流]
求助 硕士论文中翻译
|
||
|
【1】随着航天技术的发展，特别是航天器飞行速度和有效载荷与结构质量比的提高，耐高温先进复合材料正成为最主要的航天结构新材料，尤其是耐400℃以上高温的复合材料，其基体树脂必须具有非常优良的耐高温性能，而常用的耐高温树脂如双马来酰亚胺树脂、聚酰亚胺树脂已满足不了实际使用的要求。 【2】环氧树脂是一类具有优异性能的高分子合成树脂，但由于其含有大量的环氧基团，固化时交联密度大，因此性脆、且耐热性能差。因此，我们将合成的四元胺单体用于环氧树脂的固化，采用非等温差示扫描量热（DSC)技术对四元胺与环氧树脂的固化进行了跟踪，并求得了固化动力学参数。近年来，用热塑性树脂来增韧环氧树脂以期能提高环氧树脂的耐高温性，改善其脆性。 |
回复此楼» 猜你喜欢
303求调剂
已经有4人回复
-
311求调剂
已经有3人回复
-
307求调剂
已经有3人回复
-
求调剂
已经有6人回复
-
课题组接收材料类调剂研究生
已经有4人回复
-
295复试调剂
已经有3人回复
-
一志愿中南大学理学化学
已经有4人回复
-
298求调剂
已经有12人回复
-
291分工科求调剂
已经有9人回复
-
284求调剂
已经有6人回复
★ ★
david_2006(金币+2,VIP+0):不错 奖励下 就是太chinese化了
david_2006(金币+2,VIP+0):不错 奖励下 就是太chinese化了
| 1）With the development of space technology, in particular the spacecraft and payload flight speed and quality than structure of the enhanced high-temperature advanced composite materials is becoming a major aerospace structures and new materials, particularly resistant to high temperature above 400 ℃ of composite materials, the Matrix resin must have a very good high temperature performance and high-temperature resins such as the commonly used BMI, polyimide resin has been unable to meet the actual requirements. |
2楼2008-12-04 14:40:38
★ ★
david_2006(金币+2,VIP+0):不错 奖励下 就是太chinese化了
david_2006(金币+2,VIP+0):不错 奖励下 就是太chinese化了
| 2）Epoxy resin is a type of excellent performance of the polymer resin, but with its large number of epoxy groups, cross-linked when cured density, and therefore fragile, and poor heat resistance. As a result, we will be the synthesis of quaternary amine monomer used in curing the Epoxy resin, such as the use of non-temperature scanning calorimetry (DSC) technology quaternary amine curing of epoxy resin and had a follow-up, and to achieve the curing power Parameters. In recent years, the thermoplastic resin used to toughened epoxy resin with a view to raising the temperature, to improve its fragile. |
3楼2008-12-04 14:41:31
10