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x*****7
发帖数: 64 | 3 这个难度好高啊，这东西是容器，专门溶别人的啊！强人！ |
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c******h
发帖数: 4573 | 5 还好吧，你给你老板省什么钱啊。
买那种直径小的whatman的filter，0.45微米的应该可以了。用PTFE的，这个可以用于
几乎所有溶剂。 |
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P***e
发帖数: 804 | 6 PTFE is not water-permeable, therefore not suitable for aqueous samples
where cellulose or nylon filters can be used. |
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k***g
发帖数: 4904 | 8 Which is chemically inert, like PTFE, but can be melted at 100-200 degree
Celsius? It would be even better if the material is optically transparent.
Thanks. |
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v********9
发帖数: 2047 | 9 是PP或者PTFE之类塑料做成的adapter，用来做玻璃仪器与管子或者管子之间的互相连
接，用螺纹旋紧的。估计常做有机合成的大牛们都用过。
现在要买更多，但是不知道怎么称呼这个parts。请大虾们不吝赐教！谢了！ |
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x****a
发帖数: 1041 | 10 可以试试在玻璃上涂点脱模剂（一般是硅油什么的）。
或者你找块si wafer试试，这个表面是原子级别平的，一般不粘。 |
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y*******n
发帖数: 127 | 12 用Si wafer，上LB拉上一层OTE，啥都不粘 |
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x****a
发帖数: 1041 | 15 问一下LB全名是什么？ 另外，silane deposit 控制 pH的原因是啥？ 是除掉产物
CH3OH?
with |
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y*******n
发帖数: 127 | 16 langmuir-blodgett......
OTE在酸性下才会水解（当然碱性也可以，但是腐蚀硅片） |
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b**********e
发帖数: 531 | 18 个位说的都很好， 不过我想treat一块letter paper 大小的板或wafer 光第一步用酸
洗就不好操
作啊
silane
wafer |
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x****a
发帖数: 1041 | 19 用UVO处理好了。 这个大小的sample应该可以放下。 |
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c****n
发帖数: 1646 | 24 基本牌：
酸：对一人使用，对方不出碱，就掉1血
碱：与酸相反
葡萄糖：同 桃
锦囊牌：
重铬酸钾：使用此牌后，本回合内你的酸造成的伤害+1.
王水：同 过河拆桥
EDTA：同 无懈可击
万碱齐发：AOE，请出 酸
硫酸飞溅：AOE， 请出 碱
硅藻土：同 决斗（两个人要么一直出酸，要么一直出碱）
冷凝回流：同 顺手牵羊
负催化剂：同 乐不思蜀
装备：
武器： 试管：2 如果别人抵消你的酸或碱，你可以进行判定，若为红桃，你可以回1血
pH计：2 你使用 酸 时，别人要进行判定，若点数小于等于7则不可用 碱
同理 你用碱时， 对方点数大于等于7 不可用 酸
酸式滴定管：1 你可以使用无限张 酸
锥形瓶：3 你的酸碱攻击若被中和就可以立即摸一张牌
滴管：4 你的酸或碱若为最后一张手牌，则可指定3名目标，不能被中和
温度计：5 你的酸碱攻击被中和时可以进行判定，若为黑色可以弃别人一张装备牌
防具：
聚四氟乙烯：酸和硫酸飞溅对你无效，你也不能出酸
废液缸：你可把对你造成伤害的牌收集起来（如果第一次收 酸，以后就只能收酸和硫
酸飞溅，第一次收碱，以后也只收万碱齐发和碱）
玻璃塞：你每回合最多受一点... 阅读全帖 |
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b**********r
发帖数: 91 | 25 1. 二氯亚砜不能进手套箱.
2. 如果需要重蒸的话用五氧化二磷做干燥剂回流后蒸馏.
如果是直接和碳纳米管反应的话反应结束后可以把反应液加入冰乙醇淬灭.
如果是制备中间体然后和碳纳米管反应的话就得按楼上说的用水喷射泵/aspirator
pump抽掉. 可以上旋蒸, 不过最好用水泵, PTFE泵可能会有腐蚀问题. 注意通风. |
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s*******e
发帖数: 57 | 26 就是那种cap可以穿刺取样的试管，1/2dram或1dram。自己想买，在VWR上怎么也找不到
。哪位好心人给个链接。谢谢啦。 |
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s*******e
发帖数: 57 | 28 就是那种cap可以穿刺取样的试管，1/2dram或1dram。自己想买，在VWR上怎么也找不到
。哪位好心人给个链接。谢谢啦。 |
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q****i
发帖数: 6923 | 31 ０。４５um的syringe filter过滤nanoparticle和polymer的混合物5ml。溶剂是水和乙
醇。现在在用PTFE的filter觉得太贵了没必要，想换个便宜的。求推荐。 |
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a***n
发帖数: 1152 | 32 【 以下文字转载自 Chemistry 讨论区 】
【 原文由 superbenben 所发表 】
I am a nut in polymer science, could I believe the tetrafluoroethylene will
copolymerize with perfluoroallylbenzene to make a polymer with melting point
higher than PTFE? |
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m*******e
发帖数: 119 | 33 【 以下文字转载自 Chemistry 讨论区,原文如下 】
发信人: monzonite (Monzonite), 信区: Chemistry
标 题: Ask for Help on MEH-PPV
发信站: Unknown Space - 未名空间 (Sat Jan 10 16:12:46 2004) WWW-POST
I need to filter MEH-PPV solution in toluene to spin-coating on silicon
substrate. I tried Millex-FG filter with PTFE membrane (0.2 micron pore size),
but it is very strange that I can not push the liquid through the filter. I
tried filtering PMMA in toluene through that kind of filter and it has no
problem at all. Anybody could sugg |
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s***a
发帖数: 4921 | 34 还要溶于水或者比较普通的有机溶剂才好
或者能分散在水里或者有机溶剂里
要能干了以后形成均匀的膜
PTFE怎么样？ |
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s***a
发帖数: 4921 | 35 还要溶于水或者比较普通的有机溶剂才好
或者能分散在水里或者有机溶剂里
要能干了以后形成均匀的膜
PTFE怎么样？ |
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s***a
发帖数: 4921 | 36 还要溶于水或者比较普通的有机溶剂才好
或者能分散在水里或者有机溶剂里
要能干了以后形成均匀的膜
PTFE怎么样？ |
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s***a
发帖数: 4921 | 37 还要溶于水或者比较普通的有机溶剂才好
或者能分散在水里或者有机溶剂里
要能干了以后形成均匀的膜
PTFE怎么样？ |
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h*********g
发帖数: 78 | 38 why don't you use some PTFE substrate? try some solvent, like methanol then
dry your sample. |
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d*****h
发帖数: 1892 | 39 多谢了！
我的样品因为要光照聚合，所以PTFE不是很合适，但是我想可以用玻璃片取代，然后浸
泡在溶剂里，或许可以剥离。
再次谢谢！
then |
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m********h
发帖数: 405 | 41 yes, my polymer is completely soluble in THF. that is the solvent I used
for GPC. the strange thing is I made the 1mg/ml solution in THF. it is
completely transparent and soluble. also there is no viscosity at all.
but it is so difficult to pass the 0.45 micron PTFE whatman syringe filter.
why is that?
so I wonder because my polymer has high molecular weight, the random coil
is so large than 0.45 micron ? is it possible? I don't know polymer
physics well. |
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s*****n
发帖数: 741 | 42 I recently coated a PTFE (poly tetra fluoro ethylene) device with some
methacrylat. The coating layer gave round disk like uncontinued morphology
on the device surface, we need get even surface.
I used simple coat method, dip the device into the mehacrylate monomer/
initiator solution, take it out and let the monomer polymerize on the device
surface.
Any suggestions? Thanks in advance, do you think spin coating would help? or
any other coating method? |
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m***c
发帖数: 1403 | 44 需要很平么，还是说只是想把wafer包住？ 最简单就拿PTFE的胶带缠一层就行了，需
要很平的话，或者惰性气氛下加加热也许就融成一层了 |
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b***p
发帖数: 1398 | 46 太尉,
现在导管一般最流行什么材料，我听说 silicone, polyurethane 是主流。还有些
polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) and
fluorocarbons (PTFE)用的不多。
现在什么有什么流行的coating吗？ 用于导管或者guide-wire表面。 |
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w*******y
发帖数: 60932 | 47 Sears
Craftsman Compound Action Bypass Lopper
$24.99 - $10 Instant Savings
= $14.99 with Free Store Pickup
Compound Action Bypass Lopper
* 112" diameter cutting capacity
* Unique compound cutting action triples your cutting power
* Fully heat treated high-carbon steel bypass cutting head
* PTFE non stick coated blade for easy clean cuts
* Lightweight, strong aluminum handles with ergonomic grip
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w*******y
发帖数: 60932 | 48 Cuisinart GreenGourmet Hard Anodized Eco-Friendly Nonstick 12-Inch Stir-Fry
Wok with Glass Cover:
http://www.amazon.com/Cuisinart-GreenGourmet-Anodized-Eco-Frien
Great reviews -- 4.5/5 stars
Instead of going out for dinner, stay in and prepare sizzling Hunan beef or
a delicious vegetable-tofu stir-fry with this 12-inch stir-fry pan.
Measuring approximately 14 by 22-3/5 by 6-1/5 inches, the unit's gently
curved cooking interior promotes proper stir-frying, while its wide top and
narrow base allow... 阅读全帖 |
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w*******y
发帖数: 60932 | 49 Amazon has the Cyborg R.A.T. 7 gaming mouse for 69.99 with FS. Price
trackers are showing this is the lowest amazon has had it. Not a deal for
everyone, but for someone who is building a gaming rig and looking for a
mouse, this would be a reasonable deal. The mouse looks pretty cool. Most
of it is adjustable and it has a pinkie grip.
DPI range 25-5600dpi (in 25dpi steps)
Acceleration - 50G
Polling Rate -Dynamic up to 1000Hz
Tracking Speed - Up to 6m/sec
Always On
PTFE "good" Feet
Gold plate... 阅读全帖 |
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w*******y
发帖数: 60932 | 50 Link:
http://www.amazon.com/Schick-QUATTRO-Titanium-Refills-Docking/d
Product Features
Includes 1 Razor, 6 Cartridges, 1 MP3 Docking Station and 4 AAA batteries.
All Quattro cartridges fit all Quattro razors.
The cartridges are compatible with the Schick Quattro Power(not included).
The MP3 docking station fits most MP3 players and some iPod products.
Schick Quattro Titanium - NEW: Titanium coating - Ensures Excellent Adhesion
for additional tip coatings - Alpha Diamond Coating - Increases Durab... 阅读全帖 |
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