动态力学分析, 更广为人知的是DMA分析, is a powerful tool for understanding the thermal and mechanical properties of non-metallic materials. im体育APP experts use 动态力学分析 (DMA) to measure a wide range of material properties, 包括模量, 阻尼, 和固化, 等.
什么是动态力学分析?
DMA analysis measures the modulus (stiffness) and 阻尼 (energy dissipation) of materials as they are deformed under periodic stress. Using deformation as the primary variable for evaluation, DMA provides information about a material’s 玻璃化转变温度(tg) 劣化极限.
What are the advantages of dynamic mechanical analysis?
DMA analysis can be used to assess the effects of temperature on a material and characterize its physical properties. Compared to other forms of thermal testing, DMA is commonly chosen due to its ability to provide detailed and precise results. DMA analysis helps determine fundamental transition temperatures, 比如玻璃化转变, and how that value changes with material formulation and conditioning.
Dynamic Mechanical Thermal Analysis (DMTA)
DMTA is a technique used to study the mechanical properties of materials as they undergo temperature changes. This technique is commonly used in materials science and engineering to evaluate the behavior of 聚合物, 复合材料, 以及其他复杂材料.
DMA测试程序
A specimen is subjected to oscillating force, by measuring the resulting displacement or strain over a range of temperatures. By measuring the response to the application of the force, 刚度信息, 弹性, 阻尼性能, and other mechanical characteristics as a function of temperature.
Application of dynamic mechanical analysis
The mechanical response of different materials being considered for an application can be compared over the temperature range anticipated in service. For more advanced applications, DMA can include stress-relaxation behavior and creep testing.
聚合物的动态力学分析
DMA is a valuable tool for studying the mechanical behavior of polymer materials as it can provide insight into the viscoelastic properties. Polymers are known for their complex mechanical behavior, which can be affected by factors such as temperature, 频率, 以及其他物质的存在.
复合材料的DMA分析
DMA can be used to study these effects and measure important parameters such as the 玻璃化转变温度(tg), 存储模量, 损耗模量, 以及聚合物的阻尼系数.
我们的DMA分析能力
im体育APP experts use DMA analysis to measure many materials including 复合材料, 聚合物, 涂料, 粘合剂, and plastics as well as solids and liquids. 我们也用这种方法处理塑料, 橡胶, 和其他高分子材料, which have mechanical and viscoelastic properties that are subject to time, 频率, 温度范围也很大.
We use DMA analysis to measure the properties of the following materials:
- 模量
- 蠕变和应力松弛
- 电影/张力行为
- 阻尼
- Glass transition and softening temperature
- 治疗行为
We can perform DMA tests following several international standards and test requirements including ASTM D4065, ASTM D7078, ASTM E1640, 和ipc - tm - 650.
im体育APP优势
im体育APP has a global network of laboratories and is a world leader in providing routine 机械测试 服务包括 拉伸试验, 影响测试, or 硬度测试. Our DMA tests offer an essential insight into the functionality and performance of materials across multiple industries, 包括聚合物和塑料, 航空航天, 汽车, 建设, 和医疗.
A multidisciplinary team of test engineers and state-of-the-art equipment allows us to provide DMA analysis for any non-metallic material and advise on sample considerations.
For your specific DMA analysis needs, or to speak to our experts, 立即im体育APP.
Considerations for Measuring Glass Transition Temperature
Glass transition temperature measurements can vary greatly in technique and calculation based on many other factors. 在本文中, im体育APP's polymer scientists provide several considerations relating to glass transition of polymeric materials.
im体育官方app下载Qualification of the Properties of New Composite 材料
When any new composite material is developed, it requires more testing than traditional material. Understand the key testing required for new 复合材料.
im体育官方app下载相关服务
热分析(DSC, TMA, DMA, TGA)
Thermal analysis methods measure mechanical changes under differing temperatures and loads, and can pinpoint when and at what temperature significant thermal events occur.
热力分析(TMA)
TMA provides data on thermal properties by contacting the specimen with a quartz probe to measure CTE and Tg.
Non-Metallic 冲击强度试验 Services
除了查比测试, we provide specialized impact test methods for non-metallic materials, including Izod 影响测试 and Gardner 影响测试.
剪切测试
im体育APP performs a variety of 剪切测试 methods and techniques, and we are committed to providing you with the most accurate results possible.