一、定义

瞬态平面热源技术(TPS)是用于测量导热系数的一种新型的方法，由瑞典Chalmer理工大学的Silas Gustafsson教授在热线法的基础上发展起来的。它测定材料热物性的原理是基于无限大介质中阶跃加热的圆盘形热源产生的瞬态温度响应。利用热阻性材料做成一个平面的探头，同时作为热源和温度传感器。合金的热阻系数一温度和电阻的关系呈线性关系，即通过了解电阻的变化可以知道热量的损失，从而反映了样品的导热性能。该方法的探头即是采用导电合金经刻蚀处理后形成的连续双螺旋结构薄片，外层为双层的绝缘保护层，厚度很薄，它令探头具有一定的机械强度并保持与样品之间的电绝缘性。在测试过程中，探头被放置于样品中间进行测试。电流通过探头时，产生一定的温度上升，产生的热量同时向探头两侧的样品进行扩散，热扩散的速度依赖于材料的热传导特性。通过记录温度与探头的响应时间，由数学模型可以直接得到导热系数。

产品特点：

1、测试范围广泛，测试性能稳定；

2、直接测量，测试时间5-160s左右可设置，能快速准确的测出导热系数，节约了大量的时间；

3、不会和静态法一样受到接触热阻的影响；

4、无须特别的样品制备，对样品形状并无特殊要求，块状固体只需相对平滑的样品表面并且满足长宽至少为探头直径的两倍即可；

5、对样品实行无损检测，意味着样品可以重复使用；

6、探头采用双螺旋线的结构进行设计，结合专属数学模型，利用核心算法对探头上采集的数据进行分析

7、样品台的结构设计巧妙，操作方便，适合放置不同厚度的样品，同时简洁美观；

8、探头上的数据采集使用了进口的数据采集芯片，该芯片的高分辨率，能使测试结果更加准确可靠；

9、主机的控制系统使用了ARM 微处理器，运算速度比传统的微处理器快，提高了系统的分析处理能力， 计算结果更加准确；

10、仪器可用于块状固体、膏状固体、颗粒状固体、胶体、液体、粉末、涂层、薄膜、保温材料等热物性参数的测定；

11、智能化的人机界面，彩色液晶屏显示，触摸屏控制，操作方便简洁；

二、技术参数

软件特点： 

1、支持仪器系数校准。

2、自动计算导热系数，热扩散系数，相关系数，可以自动判断结果是否符合温升。

3、曲线可以一键自适应，曲线放大，缩小，视图拖动。

4、支持同时打开多条曲线，且数量不受限制。

5、可生成报告，图像，结果，实验信息等，模板可自定义。

6、软件内置试验记录、数据处理和报告格式。

7、可到处数据，支持 xls，tps,cvs,png 等格式导出，并支持对 xls，tps,cvs 等格式的导入。软件具有远程更新功能，可以自动获取到新版本的软件，直接安装。

8、支持数据优化，污点数据去除，智能化进行计算。

9、支持中文，英文， 日语，韩语切换。

部分采购高校及机构

部分使用导热系数客户SCI论文

1、Hydrogel beads derived from chrome leather scraps for the preparation of lightweight gypsum

2、Size-controlled graphite nanoplatelets_ thermal conductivity enhancers for epoxy resin

3、Thermal, morphological, and mechanical characteristics of sustainable tannin bio-based foams reinforced with wood cellulosic fibers

4、Improved thermal conductivity of epoxy resin by graphene–nickel three-dimensional filler

5、A synergistic strategy for fabricating an ultralight and thermal insulating aramid nanofiber/polyimide aerogel

6、Fabrication of Graphene/TiO 2 /Paraffin Composite Phase Change Materials for Enhancement of Solar Energy Efficiency in Photocatalysis and Latent Heat Storage

7、Improved thermal conductivity of styrene acrylic resin with carbon nanotubes, graphene and boron nitride hybrid fillers

8、Preparation and characterization of paraffin/expanded graphite composite phase change materials with high thermal conductivity

9、Tailoring of bifunctional microencapsulated phase change materials with CdS/SiO2 double-layered shell for solar photocatalysis and solar thermal energy storage

10、Functional aerogels with sound absorption and thermal insulation derived from semi-liquefied waste bamboo and gelatin

11、Lamellar-structured phase change composites based on biomass-derived carbonaceous

sheets and sodium acetate trihydrate for high-efficient solar photothermal energy harvest

12、Construction of double cross-linking PEG/h-BN@GO polymeric energy-storage composites with high structural stability and excellent thermal performances

13、Gelatin as green adhesive for the preparation of a multifunctional biobased cryogel derived from bamboo industrial waste

14、A novel self-thermoregulatory electrode material based on phosphorene-decorated phase-change microcapsules for supercapacitors

15、Development of poly(ethylene glycol)/silica phase-change microcapsules with well-defined core-shell structure for reliable and durable heat energy storage

16、Experimental and numerical study on heat emission characteristics of ventilated air annular in tunneling roadway

17、Construction of polyaniline/carbon nanotubes-functionalized phase-change microcapsules for thermal management application of supercapacitors

18、Mechanical, thermal and acoustical characteristics of composite board kneaded by leather fiber and semi-liquefied bamboo

19、Tuning the oxidation degree of graphite toward highly thermally conductive graphite/epoxy composites

20、Thermal self-regulatory smart biosensor based on horseradish peroxidase-immobilized phase-change microcapsules for enhancing detection of hazardous substances

21、Morphology-controlled synthesis of microencapsulated phase change materials with TiO2 shell for thermal energy harvesting and temperature regulation

22、Size-tunable CaCO3@n-eicosane phase-change microcapsules for thermal energy storage

23、High-Efficiency Preparation of Reduced Graphene Oxide by a Two-Step Reduction Method and Its Synergistic Enhancement of Thermally Conductive and Anticorrosive Performance for Epoxy Coatings

24、Temperature and pH dual-stimuli-responsive phase-change microcapsules for multipurpose applications in smart drug delivery

25、Development of Renewable Biomass-Derived Carbonaceous Aerogel/Mannitol Phase-Change Composites for High Thermal-Energy-Release Efficiency and Shape Stabilization

26、Immobilization of laccase on phase-change microcapsules as self-thermoregulatory enzyme carrier for biocatalytic enhancement

27、Microencapsulating n-docosane phase change material into CaCO3/Fe3O4 composites for high-efficient utilization of solar photothermal energy

28、Integration of Magnetic Phase-Change Microcapsules with Black Phosphorus Nanosheets for Efficient Harvest of Solar Photothermal Energy

29、Surface construction of Ni(OH)2 nanoflowers on phase-change microcapsules for enhancement of heat transfer and thermal response

30、Design and fabrication of bifunctional microcapsules for solar thermal energy storage and solar photocatalysis by encapsulating paraffin phase change material into cuprous oxide

31、Design and construction of mesoporous silica/n-eicosane phase-change nanocomposites for supercooling depression and heat transfer enhancement

32、Development of reversible and durable thermochromic phase-change microcapsules for real-time indication of thermal energy storage and management

33、Nanoflaky nickel-hydroxide-decorated phase-change microcapsules as smart electrode materials with thermal self-regulation function for supercapacitor application

34、Biodegradable wood plastic composites with phase change microcapsules of honeycomb-BN-layer for photothermal energy conversion and storage

35、Hierarchical microencapsulation of phase change material with carbon-nanotubes/polydopamine/silica shell for synergistic enhancement of solar photothermal conversion and storage

36、Molecularly Imprinted Phase-Change Microcapsule System for Bifunctional Applications in Waste Heat Recovery and Targeted Pollutant Removal

37、Pomegranate-like phase-change microcapsules based on multichambered TiO2 shell engulfing multiple n-docosane cores for enhancing heat transfer and leakage prevention

38、Innovative Integration of Phase-Change Microcapsules with Metal–Organic Frameworks into an Intelligent Biosensing System for Enhancing Dopamine Detection

39、Morphology-controlled fabrication of magnetic phase-change microcapsules for synchronous efficient recovery of wastewater and waste heat

40、Polyimide/phosphorene hybrid aerogel-based composite phase change materials for high-efficient solar energy capture and photothermal conversion