CRYSTAF-TREF polyolefin chemical composition distribution CCD analyzer

Both CRYSTAF and TREF techniques can be used to measure polyolefin chemical composition distribution CCD,CRYSTAF is crystallization mode analysis, TREF is dissolution mode analysis. The CRYSTAFTREF is on the same hardware with CRYSTAF and TREF technology to obtain complete CCD information.

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Classification:

Characterization of analytical instruments

Key words:

Product optimization

Detailed introduction:

For the analysis of complex substances such as PP-PE mixing, due to the difference between the two resins under excessive cooling operation, TREF and CRYSTAF are required to be characterized at the same time, and for others such as HDPE and ethylene-propylene copolymer, these two techniques are also required to analyze at the same time. In TREF mode, the two substances cannot be separated very well, but in CRYSTAF mode, better separation can be obtained. Another opposite example is the analysis of HDPE and Ziegler catalyzed PP homopolymer. TREF is better than CRYSTAF separation.

Therefore, the CRYSTAF-TREF instrument provides a good choice for the analysis of polyolefin CCDs, because the TREF mode and the CRYSTAF mode can be selected by changing the configuration.

Additional information such as comonomer content can also be obtained by the user through the optional IR4 component probe. By adding a viscosity detector, it is also possible to obtain molar mass trend change information.

The instrument software controls the entire CRYATAF-TREF analysis process without human intervention. The user only needs to put the sample into the crystallization tank, the instrument automatically analyzes, and finally completes the cleaning process.

Function:

1. CRYSTAF or TREF mode can be selected on the same equipment respectively;

2. Five samples can be analyzed per run. The TREF mode can be used for sequential analysis, each sample takes 6 hours, and the CRYSTAF mode can be used to complete the analysis of 5 samples within 8 hours;

3. Get the chemical composition distribution map of the sample, corresponding to the fraction content at temperature;

4. Optional viscosity detector and laser light scattering detector;

5. For samples with low crystallinity, the temperature can be as low as -20 ℃;

6. Optional remote control software, with remote control, diagnosis function.

Features:

1. Desktop, automatic rapid analysis, simple hardware;

2. Configure IR4 infrared detector;

3. The analysis process without artificial contact solvent, solvent consumption;

4. Automatic cleaning after analysis;

5. With remote control diagnosis function;

6. Instrument software design is very friendly, easy to operate;

7. The instrument is easy to use and maintain.