"Tracking" Plastics

Date: 09.10.2013 | ID: PI130774 | Download: "Tracking" Plastics PI130774 (PDF) | Author(s): Gabriele Tengler


ift Rosenheim tests sealants and window profiles with thermogravimetric measurement methods

Several products today contain plastics – in windows and facades too, they are being used as sealants, sealant profiles or window profiles. However, these polymers cannot be analysed in detail or evaluated with respect to their quality to a sufficient extent with the help of visual and mechanical methods. Since some products and test standards (EN 1279-4, ETAG 002 and EN 15651) demand a more accurate analysis, ift Rosenheim now offers a thermal gravimetric analysis (TGA) with which these polymers can be analysed quickly and accurately. Apart from the standardised test verification, the method is also appropriate for avoiding damages, improved traceability of the plastics processed for expert opinions and comments as well as incoming goods inspection, quality control and production control.

 

Plastics cannot be differentiated completely from one another easily and cannot be evaluated with respect to their quality and product characteristics with ease using visual or mechanical methods. The thermogravimetric measurement method throws light on the characteristic values of the material including those of thermal stability and the composition of the materials and other detailed information.

 

With the help of this new thermo-analytical measurement method, ift Rosenheim is able to determine the thermal stability and the composition of plastics and to declare them in the test report on request.

 

This analysis is defined in ISO 11358 and the demanded reference method in the test standards prEN 1279-4 "Multi-layer insulating glass units - Methods of testing the physical attributes of edge seals" and the ETAG 002, "Guidelines for European Technical Approval for bonded glazing" as well as the product standard EN 15651 for joint sealants in construction. This is very important since the characteristics and the usability of plastics are affected significantly by adjoining materials. This enables to determine the so called "finger print" of polymers such as polyamide, rubber compounds, thermoplastic elastomers and other plastics and to declare in ift test reports.

 

An additional method to determine this "finger print" of polymers is the analyse method of infrared spectroscopy. This method is used in ift Rosenheim as infrared spectroscopy in attenuated total reflection (IR-ATR) to analyse of solid materials.

 

This qualified the ift laboratories to create and display the demanded "finger print" in the ift test reports.

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