Hadj Amar

9 Questions 8 Answers 0 Followers

Questions related from Hadj Amar

What are the best characteristics chosen of Ostwald viscometer (capillary diameter, viscosity range) to measure viscosity of transformed rigid PVC?

Hello everyone, for the purpose of determining the kinematic viscosity of PVC transformed into a rigid tube dissolved in a dilute solution of cyclohexanone or THF. What are the best...

05 December 2020 9,384 0 View

Hello, Why do we find that temperature of PVC pipe exposed to the sun is higher than that measured in air? Is there is a study justified phenomena?

if we measure the surface temperature of PVC tube exposed to the sun at 60 ° C for example, we find that the tube surface temperature is higher than that at the exposure temperature.

17 April 2018 3,835 7 View

Hello, in the measurement of the mechanical properties of rigid PVC (pipe) .How justified the decrease of Young's modulus with increasing aging time?

unplasticied PVC pipe, stabilizers,

09 March 2018 3,878 4 View

I'm looking for if there is a real estimate of the maximum exposure temperature of rigid PVC tube installed in the Mediterranean(sub-Saharan zone) ?

Rigid PVC tubes installed under or on the ground and used for the transport of drinking water or for the drainage of urban or industrial wastewater.

25 February 2018 768 2 View

Are these a relationship with increases of Young’s modulus , stress yield in the thermal ageing of rigid PVC and the decreases of glass transition?

rigid PVC,TBLS stabilizer,CaCO3 additifs

14 July 2017 3,206 0 View

Why in the tensile test of ageing rigid PVC the elongation at break is more sensitive to chain scission reactions than stress at break?

mechanical properties, rigid PVC,thermal ageing

11 July 2017 2,061 3 View

Is there a study confirms idea suivant” Change in elongation at break is related to state surface polymer so stress at break related to the volume?

mechanical properties,rigid PVC,TBLS stabilisant

11 July 2017 4,849 2 View

How to supplement and balanced this reaction according to polyvinylchloride and their stabilizing (tribasic lead sulfate)?

The role of TBLS is to scavenging the molecules of HCl released during degradation or treatment of PVC following the reaction: 6HCl+3PbO.PbSO4 ===>3PbCl2+PbSO4+H2O Also is the presence of...

11 February 2017 5,103 0 View

How to supplement and balanced this reaction according to polyvinylchloride and their stabilizing (tribasic lead sulfate)?

The role of TBLS is to scavenging the molecules of HCl released during degradation or treatment of PVC following the reaction: 6HCl+3PbO.PbSO4 ===> 3PbCl2+PbSO4+H2O Also is the presence of...

11 February 2017 6,180 0 View