2024.06.27
Technical sharing | Multidimensional flame retardant performance evaluation method for PP used in cables
This article investigates the effects of inorganic aluminum hypophosphate (AHP), magnesium hydroxide (MDH), melamine polyphosphate (MPP), and melamine cyanurate (MCA) on the self extinguishing performance and combustion rate of TPE, and establishes a corresponding relationship between the flame retardant performance of the material and the flame retardant performance of the finished wire VW-1.
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2024.06.18
Technical research | Evaluation method for the transparency performance of automotive bumper made of transparent polypropylene
The characterization methods for light diffusion generally use haze parameters, but they cannot effectively explain the effect of light diffusion. This study characterizes the light diffusion effect of materials by introducing a variable angle transmittance tester, introducing two parameters: half power angle and light diffusion coefficient, and investigates the influence of different components on the light diffusion effect.
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2024.06.11
Technical research | Analysis method for the composition of pollutants on the surface of discarded plastic bottles
This study used infrared spectroscopy, micro infrared spectroscopy, and gas chromatography-mass spectrometry (GC-MS) to detect the composition and relative content of liquid and powder solid pollutants on the outer surface of discarded plastic bottles. This can provide guidance for recycling plants to selectively clean pollutants during the plastic bottle recycling process and treat wastewater after cleaning.
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2024.06.05
Technical sharing | How to accurately obtain stress-strain curves in the range of strain rates from 0.001/s to 1000/s
The question of how to obtain stress-strain curves in the range of strain rates from 0.001/s to 1000/s can be transformed into how to perfectly and reliably integrate the results obtained from two sets of testing equipment with different working principles. To answer this question, it is necessary to design from the following four aspects.
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2024.06.05
Technical Research | Using Thermogravimetric TG to Study the Thermal Degradation Dynamics of Polyethylene
Here, we mainly study the thermal degradation activation energy of polyethylene (PE).
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2024.05.29
PPT download: Accurate acquisition method of material characteristic parameters (UDB file) required for flow analysis
Last Thursday, in the live broadcast room of National High Tech Materials, technical experts shared a report on the precise acquisition method of material characteristic parameters required for mold flow analysis, which sparked heated discussions among upstream and downstream personnel in the industry! At the request of our fans, we are now sharing the PPT document with everyone.
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2024.05.27
Technical sharing | The influence of sample preparation methods on the infrared spectra of black PC/ABS alloys
This article compares the effects of different preparation methods on the infrared spectra of black plastic particle samples PC/ABS by scanning the infrared spectra using compression, film, and hot pressing methods.
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2024.05.20
Application Case | The Role of PVT Characteristic Curve in Predicting and Controlling Injection Molding Processes
With the deepening of research on precision molding, some have proposed using the PVT characteristic curve parameters of materials as variables, such as melt pressure, melt temperature, and melt cooling rate, to optimize the injection molding process and improve product quality.
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2024.05.20
Special Topic on World Metrology Day | Key Points for Formulation Design of Plastic Based Quality Control Samples
How to prepare quality control samples with high uniformity and good stability is the ultimate pursuit of quality control sample producers.
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2024.05.14
Technology Sharing | Is DMA really "do-it-all"? How to use it for glass transition, curing, viscoelasticity, life estimation, failure analysis, etc
How to study the damping properties of materials? How to study the mechanical properties of composites at high temperatures? How to study the elastic properties of rubber materials at low temperatures? How to study the curing process of thermosetting resins and their process parameters, etc.? How to characterize the impact of different formulations and processing methods on end-use performance of 3D printing materials? These problems can be analyzed with the help of DMA!
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2024.05.14
Technical Research | ABS Laboratory Accelerated Aging and Natural Exposure Correlation Study
In this paper, 10 different grades of ABS raw materials were selected, and the weather resistance of 10 different grades of ABS raw materials was evaluated by three methods: xenon lamp exposure, fluorescent ultraviolet lamp exposure and natural exposure, and the correlation between laboratory accelerated aging and natural exposure and the acceleration factors of laboratory accelerated aging were studied.
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2024.05.07
Technical sharing | Research on the influence of water absorption on the mechanical properties of engineering plastics PA, PBT, PPE, and PC
This article focuses on the influence of water absorption on the mechanical properties of four types of engineering plastics, including PA, by comparing the average change in mechanical properties under the same water absorption rate, and comparing the degree of influence of water absorption between the two materials.
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