d**u
发帖数: 21 | 1 偶没有高分子的背景，也没操作过rheometer。现请教各位大侠一个问题，
如果我想在给聚合物施加steady/ocillary shear的同时， 又能间隔一段时间
取出少量样品（一次大约100 uL），有没有什么好的方法？有没有什么类型的rheometer
可
以推荐？
好像我知道的rheometer里能装的样品量本来就很小，1－2 mL；而且为了防止样品蒸发，
还有油封，造成取样的困难。
在长管道里流动就免了，一是shear不均匀，而是怕样品吸附在管壁上。
预谢预谢（拱手） |
|
w********h
发帖数: 12367 | 2 you cannot take out some sample from parallel plate rheometer?
uL），有没有什么好的方法？有没有什么类型的rheometer
， |
|
f****n
发帖数: 67 | 3 【 以下文字转载自 Macromolecules 讨论区 】
发信人: funren (funren), 信区: Macromolecules
标 题: 请教VISCOMETER和rheometer的区别
发信站: BBS 未名空间站 (Mon Oct 4 20:52:02 2010, 美东)
G'和G"能不能用VISCOMETER来测，用来测一种蛋白hygrogel，
我现在只有VISCOMETER，可以得到RMP，mPa，shear stress，shear rate，torque的数
据，但不知道这些数据有什么用，
那位高人解答一下啊，谢谢， |
|
w********h
发帖数: 12367 | 4 ATS RheoSystems/REOLOGICA Instruments
Rheology Staff Engineer
ATS RheoSystems/REOLOGICA Instruments are a comprehensive rheological
instrumentation and technical support company specializing in rheometer and
viscometer design, research level rheometers and rheology, capillary
rheometers,
rheological consulting, viscometers, and viscosity measurements, real-time
light
and thermal cure profiling, low and high pressure rheology measurements,
dynamic shear rheometers (DSR) for asphalt testing accord |
|
e*******x
发帖数: 285 | 5 今年spring 材料MS毕业，研究方向涉及metal, ceramics, glass, powder.
毕业论文方向：fabrication and characterization of superconducting core fiber.
对于melt-draw process, micron feature photolithography, semiconductor做过研
究。
国内冶金MS毕业，研究方向：electrodeposition of copper powder.
对于电化学腐蚀，粉末制备，金属回收有一定涉猎。
这些年主要掌握的技能：SEM, EDS, XRD, FIB, 3D Digital Video Microscope,
Pycnometer, Rheometer, pH meter, Flow meter, Pressure gauge, Vibration mill,
Zeta- potential, FTIR, Four-probe, Fiber draw, Glass processing lathe,
Labview, UV ething,... 阅读全帖 |
|
n******e
发帖数: 1046 | 6 Chemical Engr (MS/PhD): Mechanical Integrity (stretch circuits, DCA,
embeddeds)
Chemical Engr (MS/PhD): Thermal Characterization, Simulation/Modeling/
Process/QTA Coordination
Mechanical Engr (MS): Design - Rigid/Rigid Flex , Prototype and QTA
Integration (Local & CN)
Mechanical Engr (MS): Design - Flex, Prototype and QTA Integration (
Local & CN)
我知道的一些要求
Materials/Mechanical Testing:
Ion Chromatography TMA, DMTA, DSC linked w/ FTIR
X-Sectioning Rheometer... 阅读全帖 |
|
e*******x
发帖数: 285 | 7 今年spring 材料MS毕业，研究方向涉及metal, ceramics, glass, powder.
毕业论文方向：fabrication and characterization of superconducting core fiber.
对于melt-draw process, micron feature photolithography, semiconductor做过研
究。
国内冶金MS毕业，研究方向：electrodeposition of copper powder.
对于电化学腐蚀，粉末制备，金属回收有一定涉猎。
这些年主要掌握的技能：SEM, EDS, XRD, FIB, 3D Digital Video Microscope,
Pycnometer, Rheometer, pH meter, Flow meter, Pressure gauge, Vibration mill,
Zeta- potential, FTIR, Four-probe, Fiber draw, Glass processing lathe,
Labview, UV ething,... 阅读全帖 |
|
e*******x
发帖数: 285 | 8 今年spring 材料MS已经毕业，研究方向涉及metal, ceramics, glass, powder.
毕业论文方向：fabrication and characterization of superconducting core fiber.
对于melt-draw process, micron feature photolithography, semiconductor做过研
究。
国内冶金MS毕业，研究方向：electrodeposition of copper powder.
对于电化学腐蚀，粉末制备，金属回收有一定涉猎。
这些年主要掌握的技能：SEM, EDS, XRD, FIB, 3D Digital Video Microscope,
Pycnometer, Rheometer, Pressure gauge, Vibration mill,
Zeta- potential, FTIR, Four-probe, Fiber draw, Glass processing lathe,
Labview, UV ething, Hydraulic press.
现在... 阅读全帖 |
|
e*******x
发帖数: 285 | 9 今年spring 材料MS毕业，研究方向涉及metal, ceramics, glass, powder.
毕业论文方向：fabrication and characterization of superconducting core fiber.
对于melt-draw process, micron feature photolithography, semiconductor做过研
究。
国内冶金MS毕业，研究方向：electrodeposition of copper powder.
对于电化学腐蚀，粉末制备，金属回收有一定涉猎。
这些年主要掌握的技能：SEM, EDS, XRD, FIB, 3D Digital Video Microscope,
Pycnometer, Rheometer, pH meter, Flow meter, Pressure gauge, Vibration mill,
Zeta- potential, FTIR, Four-probe, Fiber draw, Glass processing lathe,
Labview, UV ething,... 阅读全帖 |
|
e*******x
发帖数: 285 | 10 今年spring 材料MS毕业，研究方向涉及metal, ceramics, glass, powder.
毕业论文方向：fabrication and characterization of superconducting core fiber.
对于melt-draw process, micron feature photolithography, semiconductor做过研
究。
国内冶金MS毕业，研究方向：electrodeposition of copper powder.
对于电化学腐蚀，粉末制备，金属回收有一定涉猎。
这些年主要掌握的技能：SEM, EDS, XRD, FIB, 3D Digital Video Microscope,
Pycnometer, Rheometer, pH meter, Flow meter, Pressure gauge, Vibration mill,
Zeta- potential, FTIR, Four-probe, Fiber draw, Glass processing lathe,
Labview, UV ething,... 阅读全帖 |
|
s****u
发帖数: 19 | 11 ~{!>~} ~{TZ~} wonderlich (~{Ws06#,6]H%~}) ~{5D4sWwVPLa5=~}: ~{!?~}
composites??
I am sure here are many da xia. and I have many questions too. :)
first: how do I select rheometer? I know basically there are two kinds:
capillary and oscillary.
second: I guess that we might can get some different result from testing
filled polymer system from pure polymer system. can you tell me what more
information I can get?
Thanks, |
|
w********h
发帖数: 12367 | 12 Just use a rheometer to shear it, I have it. |
|
d**u
发帖数: 21 | 13
我说了那2个困难呀。 一是样品量小， 二是因为测试时间长（没准几天）， 在上面哪个
plate上又封了一层油。
发 |
|
w********h
发帖数: 12367 | 14 what kind of material?
what kind of measurement?
个
蒸 |
|
w********h
发帖数: 12367 | 15 nature materials上的文章不怎样阿，不懂G' G"的含义就别硬撑着用rheometer去表
征东西。polymer dynamics不是看一篇paper两篇paper就能comprehend 的。。。 |
|
w********h
发帖数: 12367 | 16 great. 看来偶们的基本训练都是不差的。
偶们老板出一本杂志的专辑，邀请了一人些文章，
因为一个审稿人的意见是rejection，他不好意思拒邀稿，
让偶再看看，靠这人也是蛮出名了，名校教授，
连 gel是什么都没弄清，说什么这个gel是fluid-like。
还用rheometer表征这种"gel"，里面G">G'，
这算什么gel阿。
这是我人生中第一次审稿给rejection or major revision。 |
|
b**s
发帖数: 589 | 17 “还用rheometer表征这种"gel"，里面G">G'”
这句话没问题呀
我现在做实验的时候也把G">G'作为gel point
表明高分子成为了percolated stress-bearing network
gel和rubber 的区别在於associate和disassociate是不是可逆的
gel 是semi-solid or semi-fluid,
说它fluid-like也没错呀
hydrogel. |
|
w********h
发帖数: 12367 | 18 比较老款的Rheometrics RDS II Rheometer。。。
有机会免费获得一台，
但还是要出运费，
并且需要space去保留这个大家伙。 |
|
|
w********h
发帖数: 12367 | 20 这是你的预算？够了。
大约$35000你就能买TA的AR2000了，after academic discount...
有钱银啊。。。 |
|
w**********g
发帖数: 687 | 21 After negotiation, the final pricie is lower around $42000. They said they
give me this price just because the end of the year.
This will include the solide test also, ETC furance system. Not sure the
price is reasonable or not. |
|
w********h
发帖数: 12367 | 22 it should be OK...I didn't include those small parts...
well, don't remember you worked on rheology...
they |
|
w**********g
发帖数: 687 | 23 Thanks.
I did not do it since I don't have access to it. It is important for my
research applcation and we are going to do it. |
|
w********h
发帖数: 12367 | 24 Position Open for a Rheology Staff Engineer at ATS RheoSystems
A current job opportunity is available for a Rheology Staff Engineer with a
Masters, or Ph.D. in Chemical Engineering/Rheology degree, with at least
five years experience in the field of Rheology. The position is open at our
Bordentown, NJ facility. Responsibilities include orchestrating and
conducting demonstrations of our equipment and installation of new
rheometers, provide technical support and rheology training to customers,
per |
|
w********h
发帖数: 12367 | 25 Position Open For A Rheology Staff Engineer at ATS RheoSystems
A current job opportunity is available for a Rheology Staff Engineer with a
Masters, or Ph.D. in Chemical Engineering/Rheology degree, with at least
five years experience in the field of Rheology. The position is open at our
Bordentown, NJ facility
Responsibilities include orchestrating and conducting demonstrations of our
equipment and installation of new rheometers, provide technical support and
rheology training to customers, per |
|
w**********g
发帖数: 687 | 26 That's right.
I have one rheometer from TA and consider to get from them now.
But the Japanese can save about $5000 |
|
w********h
发帖数: 12367 | 27 RheoSense, Inc., developer of proprietary technology VROC® (viscometer/
rheometer-on-a-chip) needs an assertive sales engineer to promote and
cultivate our growth rate in Eastern region (but not limited).
What we need:
* Strong knowledge of rheology and viscometry, and application of these
techniques
* Detail oriented
* Experience in understanding the customer’s need, and providing solutions
and demonstrations with an easy-to-follow style
* Following through to completion
What we want:
* Ad |
|
w********h
发帖数: 12367 | 28 Position Open For A Rheology Staff Engineer at ATS RheoSystems
A current job opportunity is available for a Rheology Staff Engineer with a
Masters, or Ph.D. in Chemical Engineering/Rheology degree, with at least
five years experience in the field of Rheology. The position is open at our
Bordentown, NJ facility. Responsibilities include orchestrating and
conducting demonstrations of our equipment and installation of new
rheometers, provide technical support and rheology training to customers,
pe |
|
f****n
发帖数: 67 | 29 G'和G"能不能用VISCOMETER来测，用来测一种蛋白hygrogel，
我现在只有VISCOMETER，可以得到RMP，mPa，shear stress，shear rate，torque的数
据，但不知道这些数据有什么用，
那位高人解答一下啊，谢谢， |
|
w********h
发帖数: 12367 | 30 来自主题: Macromolecules版 - Job 1 Thermal - Rheological Scientist (Analytical Sciences) Dow Corning - Americas
Midland, Michigan
This job reports to the Manager
Relocation is provided and travel is not required.
This is a Full-Time position
Overview
We are innovative leaders, unleashing the power of silicon to benefit
everyone, everywhere. From our pioneering role in the development and
commercialization of silicones, Dow Corning has grown to become a global
leader in silicon-based technology and innovation. Today, we develop
... 阅读全帖 |
|
w********h
发帖数: 12367 | 31 Postdoctoral Position at the University of Akron
POSITION: A postdoctoral research associate position is available with
Professor Robert Weiss in the Dept. of Polymer Engineering at the University
of Akron in Akron, OH. The initial appointment is for one year, but there
is the possibility of renewal subject to satisfactory progress and the
availability of funds.
QUALIFICATIONS: The candidate should have a PhD in chemical or polymer
engineering or a related field with experience in measuring an... 阅读全帖 |
|
w********h
发帖数: 12367 | 32 rheometers will give you everything.
that |
|
e*******x
发帖数: 285 | 33 今年spring 材料MS毕业，研究方向涉及metal, ceramics, glass, powder.
毕业论文方向：fabrication and characterization of superconducting core fiber.
对于melt-draw process, micron feature photolithography, semiconductor做过研
究。
国内冶金MS毕业，研究方向：electrodeposition of copper powder.
对于电化学腐蚀，粉末制备，金属回收有一定涉猎。
这些年主要掌握的技能：SEM, EDS, XRD, FIB, 3D Digital Video Microscope,
Pycnometer, Rheometer, pH meter, Flow meter, Pressure gauge, Vibration mill,
Zeta- potential, FTIR, Four-probe, Fiber draw, Glass processing lathe,
Labview, UV ething,... 阅读全帖 |
|
b**u
发帖数: 2761 | 34 Scientist, Liquid Formulation in Pharmaceutical industry
• Develop liquid, lyophilized, micronized, and nano and sustained
release parenteral formulations of large and small molecules.
• Preformulation characterization of new formulations using various
lab instruments (e.g. HPLC, CE, UV, DSC, ITC, CD, DLS/SLS, Zeta, Rheometer,
etc.).
• Provide data and justification for NCE declaration, CTA, BLA and
NDA submissions for filing in China.
• Formulate stable dosage forms cons... 阅读全帖 |
|
J****S
发帖数: 15 | 35 请有意回国发展的专业人才联系：d******[email protected]
Title: Scientist, Liquid Formulation
Department: Pharmaceutical Sciences, Discovery Center China R&D and
Scientific Affairs
Report to: Head of Formulation in the Centre for Pharmaceutical
Sciences, Discovery Center, China R&D
Subordinates: Up to 2
PRINCIPAL RESPONSIBILITIES:
• Develop liquid, lyophilized, micronized, and nano and sustained
release parenteral formulations of large and small molecules
• Preformulation char... 阅读全帖 |
|
