High-Pressure Visual Differential Scanning Calorimeter

Instrument Overview

High-pressure visual DSC features a unique new design, enabling data collection under high pressure, high temperature, and reactive gas conditions while allowing real-time monitoring of the sample's changes through a visual system. High-precision pressure control and accurate gas flow control provide better service for users in areas such as material composition analysis, process optimization, and quality control.

Instrument Application

Primarily measures physical and chemical changes related to heat, such as glass transition temperature, melting point, melting temperature, crystallization and crystallization heat, phase transition reaction heat, product thermal stability, curing/crosslinking, oxidation induction period, etc.

Brief Description of Instrument Core Technology

Reactive Summary

Samples undergo chemical reactions under isothermal controlled-temperature and high-pressure conditions, involving the introduction of raw gas and pressurizing auxiliary gas, as well as thermal pressure increase due to gas expansion and pressure relief of the generated gas.

Technical Background

In traditional thermal analysis instruments, due to the stepped transmission of gases, a pressure difference is formed within the reaction tube, making it difficult to maintain a constant pressure and flow rate of the reaction environment. This is particularly true when frost forms below freezing and the temperature is raised, which produces steam that causes significant fluctuations in the DSC baseline of the sample.

Solution

Equipped with cutting-edge microelectronics control technology, adjustable defrosting control units, and high-precision controllable voltage regulation, we have broken through this global technological bottleneck, achieving gas dynamic equilibrium under stable pressure—specifically, the dynamic equilibrium of pressure within the reactor chamber. The addition of a defrosting system ensures no DSC signal oscillation, guaranteeing a stable DSC baseline without fluctuations.

Instrument Features

Features microphotography function with PDSC.

Experiments under various atmospheres, such as N2, Ar, He, can be conducted under high pressure.

The built-in pressure gauge displays the actual pressure within the test unit.

External pressure and flow controller, accurately controlling pressure under both static and dynamic programmed atmospheres.

Optical observation of samples heated or cooled in the DSC can be performed, simultaneously recording any changes in the samples due to relaxation, melting, or reaction processes.

Microscope System

The high-pressure DSC and CCD electron microscope system integrates the ability to optically observe samples during heating or cooling in the DSC. This optical information allows for precise interpretation of phenomena measured in the DSC curves. The CCD electron microscope system cleverly utilizes the principle of image refraction, effectively mitigating the impact of temperature on the images.

Key Features of the Microscopic System

4K/1080P HDMI 60Hz adaptive switching output.

Through an automatic focus system utilizing a mobile image sensor.

Supports various control interfaces including hard triggers, mouse, foot pedals, keypads, and keyboards.

Equipped with embedded software for camera control, featuring built-in measurement, image comparison, and magnification display functions.

USB flash drive saves captured images or videos and supports local preview and playback.

Robust ISP features, excellent HDR, noise reduction, and digital zoom capabilities.

Instrument specifications

Temperature Range: Room temperature to 680℃

Temperature accuracy: ±0.1℃

Temperature Repeatability: ±0.1℃

Rising Rate: 0.1℃/min to 100℃/min

Pressure Range: 0.1 to 5.0 MPa

Observation Window: φ10mm

Observation Distance: ≥200mm.