Special gas chromatograph for detection and analysis of residual free toluene diisocyanate in coatings

NegotiableUpdate on 02/19

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The quantitative analysis method of TDI monomer in polyurethane curing agent was improved by using capillary column, hydrogen flame ionization detector, and trichlorobenzene as the internal standard. The method achieved better separation between the internal standard and TDI at low temperature, while reducing the occurrence of side reactions. The operation of this method is simple and the analysis time is short. Especially for samples with low TDI content, the precision and accuracy are more ideal than previous methods. Usage: used as raw material of polyurethane soft foam, paint, rubber, fiber and adhesive.

Product Details

Detailed content

Special gas chromatograph for detection and analysis of residual free toluene diisopropyl ester in coatings. The gas chromatograph is usedThe capillary column, hydrogen flame ionization detector, and trichlorobenzene as the internal standard have improved the quantitative analysis method of TDI monomers in polyurethane curing agents. This method achieves better separation between the internal standard and TDI at low temperatures, while reducing the occurrence of side reactions. The operation is simple and the analysis time is short, especially for samples with low TDI content, the precision and accuracy are more ideal than previous methods.

Usage: used as raw material of polyurethane soft foam, paint, rubber, fiber and adhesive.

微信图片_20190819170117

Performance Characteristics

Injection port flow rate, chromatographic column carrier gas flow rate, detector gas flow rate, precision control

Multiple injection ports can be configured: packed column injection port (with spacer blowing, can be connected to large-diameter capillary column), splitter/Non split capillary injection port, program-controlled cold column head injection port, volatile component series connection injection port (specially equipped with sample pretreatment devices such as headspace/sweep capture/thermal desorption);

Detector Design for Industry *

The amplification plate with special ceramic treatment is stable during humid seasons, automatically ignites, and has automatic protection against hydrogen leakage, making it safe and reliable.

Precise control program temperature rise and furnace temperature, precise furnace temperature tracking design

The internal control accuracy of the furnace is less than0.01℃； The temperature difference between internal points shall not exceed 1 ℃; Rapid heating and cooling, with a programmed heating rate of 120 ℃/min; Balance time of 10 seconds; Cooling time (300 ℃ to 50 ℃) for 6 minutes; The accuracy of temperature control (with a difference of less than 0.1 ℃ from the actual temperature).

Fully imported valve configuration system

*More equipped8 valves (four-way valve, six way valve, ten way valve, and liquid injection valve optional); Automatic control and sequential operation; 0 leakage blowing technology; High speed switching solenoid valve has a long service life (1 million times, 10mS).

Separated columns oven

In a multi column chromatography system, the operating temperatures of different columns can be set separately to achieve the desired temperature for each columnpremiumSeparation effect;

Convenient implementation of pneumatic cutting technology

It can achieve multidimensional chromatography function to separate and analyze complex samples, and can realize the blowback function of the chromatography column to save analysis time and cycle;

technical indicators

Column temperature box
Temperature control range	Room temperature+5 ℃~450 ℃;
Temperature setting accuracy	0.1℃
Program heating speed	60℃/min
Cheng Sheng's order	8th order program temperature rise
Cheng Sheng rate	0.1~120 ℃/min (incremental 0.1 ℃)
*Running time	999.99 minutes
Runable column loss compensation (dual channel)
heating zone
6 independent control heating zones (excluding furnace temperature control, two injection ports, two detectors, and two auxiliary heating zones)
Auxiliary heating zone operating temperature	300℃
detector
Hydrogen flame ionization detector FID
Operating temperature	450℃
detection limit	≤2.5pgC/s [n-C16]
Dynamic linear range	≥107(±10%)
Data collection frequency	100Hz
Compatible with packed columns and capillary columns
Thermal conductivity detector TCD
Operating temperature	400℃
detection limit	<400pg propane/mL, helium
Dynamic linear range	105(±5%)
Data collection frequency	100Hz
Single filament micro pool design; Compatible with packed columns and capillary columns
Flame photometric detector FPD
Operating temperature	250℃
detection limit	＜4pgC/s（P），＜1pgC/s（S）
selectivity	105gS/gC，106gP/gC
Dynamic linear range	＞103S，＞104P
Compatible with packed columns and capillary columns
Electronic Capture Detector (ECD)
Operating temperature	400℃
Detector compensation gas type	5% methane/argon or nitrogen
detection limit	＜0.01Ppg/s lindane
Dynamic linear range	＞5×105
Data collection frequency	100Hz
radioactive source	＜12mCi 63Ni
Compatible with packed columns and capillary columns
NPD nitrogen phosphorus detector
Operating temperature	450℃
detection limit	＜3pgC/s
Dynamic linear range	105N，106P
Data collection frequency	100Hz
*Small detection limit	＜0.2pgN/s，＜0.2pgP/s
Compatible with packed columns and capillary columns

Update time: August 26, 2020 11:23:39