| 5 | 1/1 | 返回列表 |
| 查看: 2058 | 回復(fù): 10 | |||
| 當(dāng)前只顯示滿足指定條件的回帖,點(diǎn)擊這里查看本話題的所有回帖 | |||
tigger8376木蟲 (著名寫手)
|
[交流]
【求助】KH570的應(yīng)用 已有5人參與
|
||
|
最近看到一篇用KH570改性納米SiO2的文章,其中對KH570的使用工藝有如下描述: Thirty grams of nano-SiO2 particles and 500 g ethanol were added to a high-speed dispersion machine filled with zirconium oxide beads and ground for 1–2 h at 4000 rpm. The mixture was filtrated to remove the zirconium oxide beads. Then 4.5 g KH570, which was pre-hydrolysed for 2 h in pH 4.00 ethanol/water (1/9, wt) solution adjusted by acetic acid, was slowly dripped in, then triethylamine was added until the pH reached 9. After 2 h reaction the mixture was filtrated to remove the solvent and then were dried at 120 C for 4 h to further remove the rudimental solvent. 本人對這部分的工藝有如下不解之處: 1. 為什么后期要用三乙胺調(diào)PH=9?作用是什么 2. KH570在本文中的用量是否太大了? 3.處理后的SiO2過濾就可以了嗎,難道不要用KH570的溶劑洗滌? PS:文獻(xiàn)來自于 European Polymer Journal 42 (2006) 1643–1652 title: Effects of surface modification of fumed silica on interfacial structures and mechanical properties of poly(vinyl chloride) composites [ Last edited by tigger8376 on 2010-5-17 at 00:42 ] |
木蟲 (正式寫手)

鐵桿木蟲 (職業(yè)作家)
專業(yè)吃飯的

木蟲 (著名寫手)
oo

鐵桿木蟲 (職業(yè)作家)
專業(yè)吃飯的

| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 085600 材料與化工 329分求調(diào)劑 +12 | Mr. Z 2026-03-25 | 12/600 |
|
|---|---|---|---|---|
|
[考研] 291求調(diào)劑 +4 | Y-cap 2026-03-29 | 4/200 |
|
|
[考研] 0856材料化工調(diào)劑 總分330 +14 | zhubinhao 2026-03-27 | 14/700 |
|
|
[考研] 數(shù)一英一271專碩(085401)求調(diào)劑,可跨 +7 | 前行必有光 2026-03-28 | 8/400 |
|
|
[考研] 286求調(diào)劑 +12 | PolarBear11 2026-03-26 | 12/600 |
|
|
[考研] 調(diào)劑 +3 | 好好讀書。 2026-03-28 | 3/150 |
|
|
[考研] 材料277求調(diào)劑 +7 | min3 2026-03-24 | 7/350 |
|
|
[考研] 277跪求調(diào)劑 +5 | 1915668 2026-03-27 | 9/450 |
|
|
[考研] 315分求調(diào)劑 +7 | 26考研上岸版26 2026-03-26 | 7/350 |
|
|
[考研] 085701環(huán)境工程求調(diào)劑 +9 | 多久上課 2026-03-27 | 9/450 |
|
|
[考研] 287求調(diào)劑 +10 | land xuxu 2026-03-26 | 10/500 |
|
|
[考研] 考研調(diào)劑 +9 | 小蠟新筆 2026-03-26 | 9/450 |
|
|
[考研] 求調(diào)劑 +6 | 林之夕 2026-03-24 | 6/300 |
|
|
[考研] 324求調(diào)劑 +8 | hanamiko 2026-03-26 | 10/500 |
|
|
[考研] 321求調(diào)劑 +6 | Ymlll 2026-03-24 | 6/300 |
|
|
[考研]
材料調(diào)劑
5+4
|
想要一壺桃花水 2026-03-25 | 10/500 |
|
|
[考研] 085601求調(diào)劑總分293英一數(shù)二 +4 | 鋼鐵大炮 2026-03-24 | 4/200 |
|
|
[考研] 086003食品工程求調(diào)劑 +6 | 淼淼111 2026-03-24 | 6/300 |
|
|
[有機(jī)交流]
20+3
|
FENGSHUJEI 2026-03-23 | 5/250 |
|
|
[考研] 335求調(diào)劑 +4 | yuyu宇 2026-03-23 | 5/250 |
|