NEN 8333 “Protective clothing ‐ Body covering clothing that supports the protection against tick bites and is industrially treated with permethrine”. The tests described in the standard may only be performed by validated testing labs.
Centexbel is acknowledged by the Deutsche Bundeswehr - Wehrwissenschaftliches Institut für Werk- und Betriebsstoffe (WIWeb) according to TL-8305-0031. As a result, manufacturers of protective clothing against tick bites can have their products tested according to the standard at Centexbel.

Heat Deflection temperature

Deflection or Distortion Temperature of Plastics

Principle

“Heat deflection temperature” can be defined as the temperature at which a standard test sample deforms (bends) under a predefined load.

Testing procedure

A test sample of 80x10x4 mm is introduced in the test apparatus.

In function of the chosen method, the sample is subjected to a load of 0,45; 1,8 of 8 MPa. This is then placed in an oil bath that is heated at constant rate (120°C/h), until a certain deflection occurs. (the deflection depends on the material/dimension)

Testing applications

Determination of the resistance to deformation at certain temperatures
Comparison of the resistance to temperature of different materials

Standards

ISO 75-2:2013 -- Plastics -- Determination of temperature of deflection under load

Leaflet

HDT

Send your samples to

Centexbel-VKC
Etienne Sabbelaan 49
8500 Kortrijk
Belgium
+32 56 29 27 00
i nfo@vkc.be

Testing product(s)

plastics

Testing lab

plastic characterisation

Testing standard

ISO 75-2:2013