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解决方案
巧克力的差示扫描量热法测试
应用领域
食品/农产品检测样品
巧克力及制品检测项目
营养成分Chip DSC集成所有DSC所需的全部主要部件。加热炉、传感器和电子元件均集成于小型化的外壳中。该芯片包含化学惰性陶瓷材料及金属材料制成的加热器和温度传感器。因此，Chip DSC具有卓越的加热和冷却速率，高达1000℃，以及优越的可再现性。利用LINSEIS Chip DSC10很容易地分析巧克力的熔融行为。乳化剂的质量和熔融温度可以进行比较，用于质量控制和产品设计。
共1台
用差示扫描量热法区分黄油和人造黄油
应用领域
食品/农产品检测样品
其他乳制品检测项目
营养成分CHIP DSC拥有卓越的加热和冷却速率，高达1000℃，以及优越的可再现性，可以很容易地分析和比较黄油和人造黄油的成分。不同含水量和不同脂肪酸可进行比较，用于质量控制和研究。
共1台
激光闪射法测试八面沸石的热导率
应用领域
石油/化工检测样品
其他检测项目
热性能八面沸石（FAU）作为重要的沸石之一，框架由12元环形成的孔的方钠石笼组成，也被认为是模型沸石。 用不同含量的干胶和八面沸石制成多孔颗粒状样品。 使用激光闪光法测定表面导热率。 结果表明，随着干胶的增多可以提高材料的热容量、热扩散率和导热系数，多孔复合材料的表面导热系数随孔隙率的增加而降低。八面沸石热导率是在20℃和大气压下的热导率使用外推法得到结果为0.10W /（m≤K）。
共2台
n型(PbTe)0.75(PbS)0.15(PbSe)0.1化合物的热电性能提升
应用领域
其他检测样品
其他检测项目
热电性能n型、p型铅硫属化合物（PbQ，Q = Te，Se，S）已被证明具有较好的热电性能。最近的一些研究，改变带隙、引入谐振态等，使得P型铅硫属化合物的热电性能有了显著提高。
共1台
Bi0.Sb5Te3/C60纳米复合材料的热电性能
应用领域
能源/新能源检测样品
其他检测项目
热电性能将C60分子添加到初始Bi0.Sb1.5 Te3材料中。塞贝克系数的值与电阻率非常相关。热电品质因数的改善主要是由于晶格热导率的降低。由于富勒烯分子的电荷载流子散射，电阻率的增加限制了ZT的进一步增加。
共1台
骨生物磷灰石中结构碳酸盐稳定同位素结果的方法相应变化
应用领域
生物产业检测样品
其他检测项目
同位素Z Metcalfe 等人认为使用几种常用的分析方法，从危地马拉和苏丹的考古骨骼的生物磷灰石中获得稳定的碳和氧同位素值（δ13 C，δ18 O）。对于苏丹样品，不同的方法平均产生的δ13 C值在±0.1‰之内，δ18 O值在±0.7‰之内，样品的热重分析（TGA）采用Linseis的L81。
共1台
林赛斯：全自动电位滴定仪测定润滑油的酸值
应用领域
石油/化工检测样品
润滑油检测项目
酸值全自动电位滴定仪AT610可进行电位滴定包括酸碱滴定，氧化还原滴定，沉淀滴定，络合滴定和非水滴定外，也可进行恒pH测量。通过选件可进行光度滴定，极化滴定和活性剂滴定等测定。当与CHA-500多样品转换器联机使用时，不仅能高效实现大量样品的自动化测量，还能提高分析的重现性，可靠性，操作简单，省时。适用于品质控制，检查，分析，研究，开发等各方面。
共1台
林赛斯：自动滴定仪测定动植物油脂的皂化值
应用领域
食品/农产品检测样品
食用植物油检测项目
理化分析全自动电位滴定仪AT610可进行电位滴定包括酸碱滴定，氧化还原滴定，沉淀滴定，络合滴定和非水滴定外，也可进行恒pH测量。通过选件可进行光度滴定，极化滴定和活性剂滴定等测定。当与CHA-500多样品转换器联机使用时，不仅能高效实现大量样品的自动化测量，还能提高分析的重现性，可靠性，操作简单，省时。适用于品质控制，检查，分析，研究，开发等各方面。
共1台
林赛斯：自动滴定仪测定动植物油脂的过氧化值
应用领域
食品/农产品检测样品
食用动物油脂检测项目
理化分析全自动电位滴定仪AT610可进行电位滴定包括酸碱滴定，氧化还原滴定，沉淀滴定，络合滴定和非水滴定外，也可进行恒pH测量。通过选件可进行光度滴定，极化滴定和活性剂滴定等测定。当与CHA-500多样品转换器联机使用时，不仅能高效实现大量样品的自动化测量，还能提高分析的重现性，可靠性，操作简单，省时。适用于品质控制，检查，分析，研究，开发等各方面。
共1台
林赛斯：电位滴定法测定柠檬汁的总酸(酸度)含量
应用领域
食品/农产品检测样品
果蔬汁类及其饮料检测项目
理化分析全自动电位滴定仪AT610可进行电位滴定包括酸碱滴定，氧化还原滴定，沉淀滴定，络合滴定和非水滴定外，也可进行恒pH测量。通过选件可进行光度滴定，极化滴定和活性剂滴定等测定。当与CHA-500多样品转换器联机使用时，不仅能高效实现大量样品的自动化测量，还能提高分析的重现性，可靠性，操作简单，省时。适用于品质控制，检查，分析，研究，开发等各方面。
共1台
林赛斯：电位滴定法测定肉汁的氯化钠(盐分)含量
应用领域
食品/农产品检测样品
腌腊肉制品检测项目
理化分析全自动电位滴定仪AT610可进行电位滴定包括酸碱滴定，氧化还原滴定，沉淀滴定，络合滴定和非水滴定外，也可进行恒pH测量。通过选件可进行光度滴定，极化滴定和活性剂滴定等测定。当与CHA-500多样品转换器联机使用时，不仅能高效实现大量样品的自动化测量，还能提高分析的重现性，可靠性，操作简单，省时。适用于品质控制，检查，分析，研究，开发等各方面。
共1台
粘性样品的接触角测量
应用领域
检测样品
检测项目
Viscosity is resistance to flow. Viscous samples require special consideration. There are several
separate issues, and these apply whether one desires to measure interfacial tension or contact
angles. Viscosity is measured in milli Pascal seconds (mPa s) which is numerically identical to
centi Poise (cp). Water has a nominal viscosity of 1cp or 1mPa s. Viscosity is a strong function
of temperature, dropping rapidly as temperature rises. A good place to get reference values for
viscosity is the CRC Handbook of Chemistry and Physics (www.crcpress.com).
暂无关联产品
用接触角测量仪分析涂有树脂的铝薄
应用领域
检测样品
检测项目
This sample exhibited an equilibrium water
contact angle of zero degrees, but the
spreading is not instantaneous. The FTÅ200
can measure this spreading time. The
following figures illustrate the drop profile
at various times. The resultant contact angle
and base width is also graphed. Differing
amounts of surfactant in the resin would
cause the drop to spread at different rates.
To do comparative work of this nature, the
drop volume should be standardized to
within, say, 10% on each sample. The pump
forms a pendant drop on the tip which is
allowed to grow until its bottom touches the
surface, at which time the drop detaches
from the tip and forms a sessile drop.
暂无关联产品
用接触角测量来表征化纤
应用领域
检测样品
检测项目
Cotton sheeting was tested for contact angle
and absorption using a customer supplied
ink as the test fluid. Two samples were
provided: one had a special treatment and
the other did not.
Small droplets, in the 2 to 3μl volume range,
were deposited on the sample by positioning
the dispense tip just above the surface and
growing the pendant drop until its bottom
touched the sample and the drop detached.
The image below shows a typical drop just
before detachment.
暂无关联产品
通过接触角测量来表征纸张的润湿性
应用领域
检测样品
检测项目
Contact angle and absorbency measure-ments are
easily performed with the FTÅ200. The system
has several features designed specifically for
these measurements:
· fast image acquisition: 60 images/second
· long movies: typically up to 200 images
· flexible image timing: linear/non-linear
· synchronization: fiber optic drop sensor
Fast image acquisition does two things: it allows
the instrument to capture extremely rapid
absorptions, such as acetone and other solvents,
into the sample, and it permits one to accurately
determine when the drop settled on the specimen
and began absorbing. Long movies, a unique
feature of the FTÅ200, permit the entire process
to be captured with-out sacrificing the details at
the beginning.
The instrument has another unique
暂无关联产品
棱镜的接触角的测量
应用领域
检测样品
检测项目
Sessile drop contact angles were measured with water on two types of plastic lens with a
standard FTÅ200 instrument. One lens had an antireflection coating and the other did not. The
purpose of the measurement was to both show the differences between the lens coatings and the
process of making measurements on the "side" of a lens where the surface is obviously not flat.
A secondary purpose was to see if the curvature of the lens was sufficient that local baseline
correction was necessary.
暂无关联产品
接触角在金属网格上的应用
应用领域
检测样品
检测项目
Contact angles are well established as a
sensitive means of contamination detection
on surfaces. These measurements are
straightforward on flat, solid surfaces and
can be extended to curved surfaces with a
little effort. When the surface is either
• rough, e.g., a medium grit sandpaper
• a fabric of fibers
• perforated with holes
then it is composite in the sense that it
alternates between air and substrate as one
moves microscopically across the surface. It
is important to understand that the contact
angles reflect the composite material and not
just the original solid substrate.
暂无关联产品
接触角的测量-微小水滴在纸上
应用领域
检测样品
检测项目
The FTÅ4000 can place very small drops on a sample and measure the contact angle. To
produce small drops, the instrument uses glass capillary needles and a piezo electric pump to
control the small volumes required. Two cameras are provided so the user can place the drops at
a precise location on the sample. Figure 1 shows a small drop ready to be placed on the sample,
which in this case is a printed business card. The width of the printing is measured to illustrate
the size of the drop (in the bottom of the "2"). The instrument can produce drops which are
considerable smaller than the one illustrated, but then the "weave" or roughness of the paper
becomes an issue in making contact angle measurements.
暂无关联产品
接触角测量来表征脱模剂
应用领域
检测样品
检测项目
Two injection molded plastic samples were tested for mold release agent. The samples were
hemispherical in shape. Contact angles were measured using water and methylene iodide
(diiodomethane). The samples had been handled somewhat, so it was not surprising there was
some variation in measurements at different locations. Because of this, five measurements of
each fluid were made on each sample. The figure below shows a typical drop, in this case
methylene iodide on sample #2.
暂无关联产品
接触角测量来表征航空飞机表明镀膜层
应用领域
检测样品
检测项目
Contact angles using water were measured
on five coatings used on aircraft. These
coatings are very uniform spatially but do
exhibit hydration, meaning their contact
angle changes as a function of exposure to
the vapor of the test fluid (i.e., water).
Therefore each contact angle was measured
as a function of time, with t = 0 corresponding
to the first contact of the water with
the dry surface. Two contact angles can be
identified: an initial angle and a steady-state
angle. These surfaces equilibrated in about
15 seconds, as can be seen from the representative
graphs of contact angle versus time
presented below.
暂无关联产品
焊料接触角的测量
应用领域
检测样品
检测项目
This application note will illustrate surface
tension and contact angle measurements of
molten solder using the FTÅ200 system.
The FTÅ200 has an optional Environmental
Chamber which can maintain a temperature and,
if desired, an atmosphere. The temperature was
set to 200°C, hot enough to melt the 63% tin,
37% lead Kester “44” brand rosin core solder
used in this work. The atmosphere was air.
暂无关联产品
高分子聚合物在高温熔融下接触角的测量
应用领域
检测样品
检测项目
Pendant drop surface tension measurements of substances which are solids at room temperature but melt below, say, 250°C, can easily be made with the FTÅ200 Dynamic Contact Angle Analyzer and its Environmental Chamber using the following protocol.
暂无关联产品
钢表面自由能的测量
应用领域
检测样品
检测项目
Four precision steel coupons were tested on an FTA200 for contact angle and surface energy.
The samples were ground smooth and appeared clean, which is what makes the following results
interesting.
暂无关联产品
纺织材料表面的接触角的测量
应用领域
检测样品
检测项目
This sample is an open weave material with a reasonably hydrophyllic fiber. A consequence of
this is that the material can not support a sessile drop. However, its apparent absorption is due
far more to its open weave than to capillary forces. Basically water "falls through" the surface
more than it absorbs into it. This was verified by conducting a capillary rise test where the
sample is dipped into a beaker of water and the rise of the wetted portion noted. This sample
exhibited very little rise, perhaps a mm. By comparison, an ordinary paper towel (a much denser
material) will have a 10 or 15mm rise within a second or two. With this behavior in mind, the
following images illustrate its behavior.
暂无关联产品
测量接触角来检测表明洁净程度
应用领域
检测样品
检测项目
Contact angle measurements can determine the surface energy, γ, of a solid. To accurately
measure the surface energy, we must use a set of fluids and the Lewis acid/base theory with the
contact angles, θ, for each fluid. However, a simple contact angle measurement with water will
give an approximate answer. This is useful because almost all "contaminants" on a surface affect
the measured surface energy.
暂无关联产品
玻璃接触角的测量
应用领域
检测样品
检测项目
In the normal profile mode, where we look sideways at the sessile drop, the FTA200
software should work automatically down to 10° without normal care and down to 5° with
special care. Around 5 degrees, one gets "glare" across the top of the drop which confuses
automatic analysis. The drop no longer appears as a silhouette against the backlight.
暂无关联产品
contact angles on open weave materials
应用领域
检测样品
检测项目
This sample is an open weave material with a reasonably hydrophyllic fiber. A consequence of
this is that the material can not support a sessile drop. However, its apparent absorption is due
far more to its open weave than to capillary forces. Basically water "falls through" the surface
more than it absorbs into it. This was verified by conducting a capillary rise test where the
sample is dipped into a beaker of water and the rise of the wetted portion noted. This sample
exhibited very little rise, perhaps a mm. By comparison, an ordinary paper towel (a much denser
material) will have a 10 or 15mm rise within a second or two. With this behavior in mind, the
following images illustrate its behavior.
暂无关联产品
Cleanliness Measurements Using Contact Angles
应用领域
检测样品
检测项目
Contact angle measurements can determine the surface energy, γ, of a solid. To accurately
measure the surface energy, we must use a set of fluids and the Lewis acid/base theory with the
contact angles, θ, for each fluid. However, a simple contact angle measurement with water will
give an approximate answer. This is useful because almost all "contaminants" on a surface affect
the measured surface energy. This connection
暂无关联产品
Contact Angle and Surface Tension Measurements of Solders
应用领域
检测样品
检测项目
This application note will illustrate surface
tension and contact angle measurements of
molten solder using the FTÅ200 system.
The FTÅ200 has an optional Environmental
Chamber which can maintain a temperature and,
if desired, an atmosphere. The temperature was
set to 200°C, hot enough to melt the 63% tin,
37% lead Kester “44” brand rosin core solder
used in this work. The atmosphere was air.
暂无关联产品
