Hakim Bout

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Questions related from Hakim Bout

Could we improve the compression set of a rubber compound ?

Compound composition : EPDM, Oil, white fillers, sulfur, accelerator, activator, blowing agent, retarder...

22 May 2024 2,924 0 View

Why we have bubbles defects on the surface defects on a rubber material ?

As you can see below an SEM image of a rubber (this rubber formulated with EPDM + blowing agent'OBSH' + oil + other chemicals agent), I recently noticed that the material contains a lot of bubbles...

17 April 2024 8,346 0 View

how to determine the occupational exposure limit for plastic mixtures/ valeur limite d'exposition professionnel (VLEP) ?

In the context of chemical risk in industry, the occupational exposure limit value is a very important term for determining the maximum concentration and time that an employee can be exposed to a...

29 January 2024 6,852 0 View

Is the molecular weight distribution (MWD) responsible for the presence of the orange skin in the rubbers ?

hello evryone, when a polymer has a narrow( fig below) distribution, the macromolecules don't flow in the same way, so this will impact the polymer's viscosity, which can lead to extrusion...

30 June 2023 5,110 3 View

How can we calculate the rate % of polyethylene content in EPDM ?

To measure the rate of polyethylene in the EPDM I used the FTIR measuring the surface area of each peak but the problem in the EPDM there is polyethylene and polyproylene so there will be an...

16 May 2023 4,286 4 View