| 查看: 646 | 回复: 3 | |||
| 当前主题已经存档。 | |||
[交流]
有效阻燃成分磷含量高
|
|||
|
上图是阻燃MPPO释热速率曲线图，从图中可以看出，未经阻燃处理的MPPO在点燃后50~280秒内剧烈放热，而RDP2、RDP3阻燃的MPPO释热速率明显降低，这样可以避免由于剧烈放热而造成温度升高过快、火势加大。同时发现，RDP2阻燃的MPPO释热速率又低于RDP3阻燃的MPPO。 与磷酸三苯酯（TPP）相比，间苯二酚双磷酸苯基酯齐聚物（RDP）具有分子量大，热稳定性强，有效阻燃成份磷含量高等特点。 采用RDP阻燃的MPPO，除阻燃性得以保持外，综合性能得以提高，说明高分子量阻燃剂RDP与MPPO的相容性较好。 TPP缺点：分子量小，耐水能力偏低，与高聚物的相容性差，且对阻燃基材有一定的增塑作用，影响了阻燃MPPO的物理—机械性能，尤其降低了热形变温度。 RDP优点：分子量大，有效的提高了阻燃剂与MPPO树脂的相容性，增强了耐水解能力，显著的提高阻燃MPPO的综合性能。 请帮我把上面一段翻译成英文！！谢谢！！ |
回复此楼» 猜你喜欢
材料调剂
已经有4人回复
-
面上模板改不了页边距吧？
已经有6人回复
-
307求调剂
已经有6人回复
-
304求调剂
已经有5人回复
-
317一志愿华南理工电气工程求调剂
已经有8人回复
-
272求调剂
已经有3人回复
-
化工专硕348，一志愿985求调剂
已经有6人回复
-
292求调剂
已经有3人回复
-
290求调剂
已经有6人回复
-
295求调剂
已经有5人回复
niexg
至尊木虫 (著名写手)
- 应助: 0 (幼儿园)
- 贵宾: 4.454
- 金币: 8343.8
- 散金: 580
- 红花: 1
- 帖子: 1591
- 在线: 86.1小时
- 虫号: 222096
- 注册: 2006-03-20
- 性别: GG
- 专业: 高分子
★
zhaoyusnow(金币+1):感谢参与，欢迎常来
zhaoyusnow(金币+1):感谢参与，欢迎常来
|
On the chart is anti- burns MPPO to release the hot speed diagram of curves, may see from the chart, after anti- has not burnt processing MPPO after lighting in the 50~280 second fierce exothermic, but RDP2, RDP3 anti- burn MPPO releases the hot speed obviously to reduce, like this may avoid as a result of being fierce exothermically creates temperature increment excessively quickly, the fire intensity enlarges. Also discovered, RDP2 anti- burns MPPO releases the hot speed to be lower than MPPO which RDP3 anti- burns (TPP) compares with the triphenyl phosphate, the resorcinol double phosphoric acid benzyl ester oligomer (RDP) has the molecular weight in a big way, thermostability strong, is effective anti- burns the ingredient phosphorus content higher characteristic Uses MPPO which RDP anti- burns, besides anti- burns the nature to be able to maintain, the overall performance can enhance, showing macromolecular weight burning inhibitor RDP and the MPPO compatibility is better. TPP shortcoming: Molecular weight small, water resistant ability somewhat low, is bad with the high polymer compatibility, also to anti- burns the base material to have the certain plasticization, affected anti- has burnt MPPO physics □machine capability, especially reduced the hot deformation temperature. RDP merit: The molecular weight is big, the effective enhancement burning inhibitor and the MPPO resin compatibility, strengthened has borne the hydrolisis ability, the remarkable enhancement anti- burnt MPPO the overall performance. |
2楼2006-06-21 17:54:20
3楼2006-06-21 20:19:37
4楼2006-06-22 13:07:37
