| 查看: 2054 | 回復: 10 | |||
tigger8376木蟲 (著名寫手)
|
[交流]
【求助】KH570的應用 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

|
本帖內容被屏蔽 |
榮譽版主 (著名寫手)
木蟲 (正式寫手)

| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 299求調劑 +8 | 15188958825 2026-03-25 | 8/400 |
|
|---|---|---|---|---|
|
[考研] 一志愿北京理工大學本科211材料工程294求調劑 +6 | mikasa的圍巾 2026-03-28 | 6/300 |
|
|
[考研] 11408軟件工程求調劑 +3 | Qiu學ing 2026-03-28 | 3/150 |
|
|
[考研] 生物學學碩,一志愿湖南大學,初試成績338 +6 | YYYYYNNNNN 2026-03-26 | 7/350 |
|
|
[考研] 一志愿中南大學化學0703總分337求調劑 +5 | niko- 2026-03-27 | 5/250 |
|
|
[考研]
|
y7czhao 2026-03-26 | 10/500 |
|
|
[考研] 299求調劑 +7 | 嗯嗯嗯嗯2 2026-03-27 | 7/350 |
|
|
[考研] 藥學105500求調劑 +3 | Ssun。。 2026-03-28 | 3/150 |
|
|
[考研] 292求調劑 +14 | 鵝鵝鵝額額額額?/a> 2026-03-25 | 15/750 |
|
|
[考研] 316求調劑 +5 | Pigcasso 2026-03-24 | 5/250 |
|
|
[論文投稿] Journal of Mechanical Science and Technology +3 | Russ_ss 2026-03-25 | 5/250 |
|
|
[考研] 0703化學一志愿南京師范大學303求調劑 +3 | zzffylgg 2026-03-24 | 3/150 |
|
|
[考研] 342求調劑 +3 | 加油a李zs 2026-03-26 | 3/150 |
|
|
[考研] 求調劑 一志愿 本科 北科大 化學 343 +6 | 13831862839 2026-03-24 | 7/350 |
|
|
[考研] 333求調劑 +6 | wfh030413@ 2026-03-23 | 6/300 |
|
|
[考研] 求調劑 +8 | Auroracx 2026-03-22 | 8/400 |
|
|
[考研] 297求調劑 +6 | 田洪有 2026-03-26 | 6/300 |
|
|
[考研] 化學調劑一志愿上海交通大學336分-本科上海211 +4 | 小魚愛有機 2026-03-25 | 4/200 |
|
|
[考研] 0854電子信息求調劑 +7 | α____ 2026-03-22 | 9/450 |
|
|
[考研] 材料專碩找調劑 +5 | 哈哈哈吼吼吼哈 2026-03-23 | 5/250 |
|