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2018-08-21
Key points of super low carbon content analyzing by high frequency infrared carbon sulfur analyzer are as follows: Contamination prevention. 1.1 Especially oil contamination during process of drilling, turning or milling should be avoided, for which will cause high carbon content in sample, also large result fluctuation. Furthermore, the contaminant is hard to be washed by acetone, ethyl ether, CT...
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2018-08-10
Dedicated carbon sulfur crucible is main consumable of high frequency infrared carbon sulfur analyzer, usually it can be used only one time so consumption is large. Meanwhile, quality requirement to crucible is very high for low or super lower carbon/sulfur content sample test. Acceptance standard: dedicated carbon sulfur analyzing crucible, factory inspection for 100 piece Item 1: appearance insp...
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2018-09-03
The market requires lower and lower carbon/sulfur content in steel, for low carbon sulfur steel like silicon steel, extra-deep drawing auto sheet, and gas pipeline steel, during the refining process, carbon sulfur content in steel sample reaches to around 0.001%. Since when the content is closed to baseline value, the baseline value will affect testing limit, also affect analyzing precision and ac...
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2018-11-07
Brand :CSCERAMIC Factory :CS CERAMIC CO.,LTD YB/T 4145-2006 (China) Dedicated Carbon Sulfur Analyzing Crucible 1. Scope This standard defines terminologies, structure, technical requirements, usage requirements, package, storage and transportation, marks, and quality certificates of dedicated carbon sulfur analyzing crucible. This standard is applicable to dedicated carbon sulfur analyzing c...
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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...
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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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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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2019-01-16
Aluminum crucible is the main supporting tool in thermal analyzer and the carrier of sample. Aluminum is a silver-white metal, which is protected from reaction with air and water due to its surface oxide layer. It is easily soluble in dilute sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide and potassium hydroxide solutions, and hardly soluble in water. Relative density 2.70. Melting...
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2019-01-21
Advantages of Thermal Analysis Crucible Cover: Improving the temperature distribution in the crucible is conducive to uniform temperature inside the reaction system. Effectively reduce the influence of radiation effect and sample color. Prevent the flying of extremely light fine sample powder and prevent it from drifting away with the dynamic atmosphere or being taken away in the process of vacuum...
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2019-02-21
Abstract: DSC, TGA and TMA techniques are used for systematical study of glass transition, thermal degradation, thermal oxygen degradation, HCl removal process and deformation characteristics of ABS / PVC / NBR alloys. The results show that various changes in ABS / PVC / NBR alloy are accompanied by changes in energy, mass and dimension. Glass transition temperature is an important parameter to ch...
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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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2019-03-08
Aluminum crucible is the main supporting tool in thermal analyzer and the carrier of sample. Aluminum is a silver-white metal, which is protected from reaction with air and water due to its oxide layer on the surface. It is easily soluble in dilute sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide and potassium hydroxide solutions, while hardly soluble in water. Relative density 2.70...
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2019-03-14
1. Experimental part 1.1 Experimental instrument DuPont 1090 thermal analyzer is used, thermal analysis sample crucible. 1.2 Experimental method DSC: Determination of glass transition of polymers and their alloys; TGA: Determination of thermal degradation, thermal oxidation degradation and constant temperature properties of polymers and their alloys; TMA: Determination of expansion coefficient and...
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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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2019-03-28
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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2019-04-16
1. Introduction to Thermal Analysis Thermal analysis (TA) is a technique that records the functional relationship between physical properties and temperature of sample under the programmed temperature conditions. The most commonly used TA methods are differential thermal analysis (DTA), differential scanning calorimetry (DSC) and thermogravimetry (TG). The most commonly used thermal analysis cruci...
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2019-04-24
Thermal analysis is an analytical method to study the relationship between physical and chemical changes and temperature of materials. This article summarizes application of thermal analysis technology in research field of traditional Chinese medicine. 1. Classification of Methods of Thermal Analysis Technology There are various types of thermal analysis methods, among which differential thermal a...
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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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2019-08-11
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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2019-08-11
Alumina ceramic crucible is widely used in experimental analysis for its excellent performance, and satisfactory lifespan. However, to ensure the performance and lifespan of a crucible, it is very important to hand, operate and maintain it correctly, so i/n the current article, a care guideline of alumina ceramic crucible will be introduced for users. 1.Checking crucible for crack or d...