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2019-08-13
In recent years, with development of new energy source and IT industry, silicon-based technologies are attracting more and more attention, and always play a significant role in the so-called new science and technology revolution. One example is solar energy market, in which silicon-based materials dominate a market share of over 90 percent. To secure its strong position within the energy industry ...
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2019-08-11
Recently, as advanced ceramic industry has developed rapidly, more and more kinds of ceramic products are being used in various industries, and many new ceramic materials have been developed, especially zirconia ceramics and alumina ceramics. Among them, zirconia ceramic crucible, alumina ceramic crucible, zirconia ceramic pans and alumina ceramic pans are widely used for melting experiments of me...
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2019-05-09
Advantages of lidded Thermal Analysis Crucible: Improving temperature distribution in the crucible, which favors uniform temperature inside the reaction system. Effectively reducing the influence of radiation effect and sample color. Preventing extreme light sample powder from flying and drifting away with the dynamic atmosphere or being taken away in the process of vacuum purge. Sensor can be eff...
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2019-03-28
1.Experimental part 1.1 Raw material Ammonia ester modified liquefied MDI (U-MDI ), NCO%=28.4 %, functionality 2, ethylene oxide terminated polypropylene oxide polyether (PPO), ZS-2185, Mn=2000, [K+]<5ppm, primary hydroxyl content>70% in DETDA, 2,4-isomer/2,6-isomer=80/20. MDA and catalyst dibutyltin dilaurate are chemical reagents, catalyst dosage: 2.0×10-1g cat./g PPO. 1.2 Sample pre...
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2019-03-25
25.44 26.12 26.68 27.18 27.63 28.07 28.52 29.00 29.53 30.11 30.75 31.43 32.17 500 24.88 25.57 26.14 26.62 27.06 27.48 27.91 28.37 28.87 29.43 30.03 30.70 450 24.36 25.06 25.63 26.11 26.54 26.95 27.36 27.79 28.26 28.79 29.37 400 23.85 24.58 25.16 25.65 26.07 26.46 26.85 27.26 27.71 28.21 350 23.37 24.12 24.73 25.22 25.64 26.03 26.40 26.79 27.21 300 22.89 23.68 24.31 24.82 25.25 25.63 25.99 26.37 25...
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2019-03-20
Differential scanning calculation (DSC) is a technique that under temperature control program, used to determine the relationship between the heat flow rate or power difference of samples and reference materials, and temperature or time under program control temperature. DSC has been widely used in the fields of material processing, chemistry, medicine, biochemistry, petroleum, aerospace, environm...
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2019-03-08
1.Brief introduction Due to influence of thermal history, various properties of polymers will change, especially thermal properties of crystalline polymers. Thermal history of polymer is affected by various factors such as preparation process, storage conditions, and usage environment. Usually, thermal history of materials is studied by thermal analysis and viscoelasticity measurement. This paper ...
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2019-01-02
The glass transition, thermal degradation, thermal oxygen degradation and desorption of ABS / PVC / NBR alloy were studied by DSC, TGA and TMA techniques. The HCl process and deformation characteristics are systematically studied.The results show that various changes in ABS / PVC / NBR alloy are accompanied by changes in energy, mass and geometry. Glass transition temperature is an important param...
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2018-12-20
Thermal analysis has been applied in many fields, and various materials and sizes of thermal analysis sample pans have appeared accordingly.Its effectiveness can be obtained not only academically but also industrially.As an application field, inorganic materials such as metals, minerals, ceramics, glass and high molecular materials such as plastics and rubber are self - evident, and all substances...
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2018-12-05
Thermal analysis technology is a group of technologies to characterize the relationship between the properties of materials and temperature. It is widely used in qualitative and quantitative characterization of thermal, physical, mechanical and stability properties of materials, and has very important practical significance for the research and development of materials and quality control in produ...