Reactive System Screening InstrumentIt is an advanced experimental equipment that integrates automation control, real-time monitoring, and data analysis. It is mainly used for rapid screening and optimization of chemical reaction systems, and plays an important role in new material research and development, drug synthesis, environmental protection, and other fields. This device provides researchers with a wealth of valuable data by precisely controlling reaction conditions such as temperature, pressure, pH value, stirring speed, and real-time monitoring of key parameters during the reaction process such as reaction rate, conversion rate, product distribution, changes in substance concentration, acidity and alkalinity, and gas generation and consumption. Its core components include the reaction module, control system, and analysis system: the reaction module is usually composed of multiple independent reactors, which can simulate different reaction environments; The control system ensures the accuracy and repeatability of the experiment; The analysis system monitors the reaction process in real time through sensors and detectors, and transmits the data to the computer for processing and analysis.

　　Reactive System Screening InstrumentUsage steps:

1、 Preparation before the experiment

1. Risk assessment

Refer to the MSDS of the sample to confirm if it contains high-energy functional groups (such as peroxides, azides, nitro groups);

Preliminary assessment of suitability for testing this equipment (to avoid the risk of overheating/overpressure).

2. Sample preparation

Weigh an appropriate amount of sample (usually 1-500 mg, depending on instrument sensitivity);

Use specialized sample crucibles (aluminum, stainless steel, Hastelloy, etc.) to ensure compatibility;

For volatile/toxic samples, seal and package them in a glove box or fume hood.

3. Equipment inspection

Confirm that the furnace body is clean and free of residue;

Check if the sealing ring, sensor, and gas pipeline are intact;

Turn on the cooling system (water cooling or liquid nitrogen) and protective gas (N ₂/Ar).

2、 Instrument setup and sample installation

1. Parameter setting (through control software)

Temperature program: such as isothermal (25 ° C~200 ° C), dynamic heating (2-10 ° C/min);

Atmosphere control: Inert (N ₂), oxidizing (Air/O ₂), reducing (H ₂) or sealed;

Pressure upper limit (if supported): Set a safe pressure relief threshold;

Data collection frequency: High heat release reactions require a high sampling rate (such as above 1 Hz).

2. Install sample

Place the sample crucible into the sample pool/autoclave;

Install a reference crucible (empty crucible or inert material such as α - Al ₂ O3);

Tighten the cover tightly to ensure no leakage (high-pressure systems require torque wrenches to tighten to standard torque).

3、 Run test

1. Start the program

Start the software and begin testing;

The system automatically records: temperature, heat flow/power, pressure, gas release (such as when combined with MS/FTIR), etc.

2. Real time monitoring

Observe for any abnormal heat release, sudden pressure rise, or color change;

If a safety alarm is triggered (such as overheating or overpressure), the experiment should be terminated immediately.

4、 Test completion and data processing

1. Natural cooling

After the test is completed, let the system cool naturally to a safe temperature (usually<50 ° C) before opening the lid;

The high-pressure system needs to be slowly depressurized before opening.

2. Take out the sample

Wear protective gloves and take out the crucible;

Observe the residual state (carbonization, melting, gas residue, etc.) and take photos to record.

3. Data analysis

Software automatically generates curves:

Heat flux vs temperature/time (DSC/TAM)

Temperature/Pressure vs Time (ARC)

Extract key parameters:

Initial heat release temperature (T ₀)

Maximum heat release rate (dT/dt) ₘₐₓ

Adiabatic temperature rise (Δ T ₐ d)

Decomposition heat (Δ H, J/g)

4. Safe disposal

Dispose of reaction residues according to hazardous waste regulations;

Thoroughly clean the sample compartment to prevent cross contamination.