Plasticiser loss from plastic or rubber products through
Two kinetics-dominating migration modes The migration of plasticiser from polymers to a gas phase is a two-step process that includes diffusion from the polymer bulk to the surface followed...
Migration kinetics and mechanisms of plasticizers
The migration phenomenon occurs mainly due to the differential concentration of plasticizers and stabilizer between the additive part and the nonadditive part. All these components were added in propellant originally, and none was in liner, neither was in insulation, so they migrated from propellant to liner and insulation.
Migration kinetics and mechanisms of plasticizers
The migration occurred within 1mm to the interfaces, and the apparent migration activation energy (Ea) of nitroglycerin (NG), 1,2,4-butanetriol trinitrate (BTTN) and a kind of aniline stabilizer AD in propellant, liner and insulation was calculated respectively on the basis of HPLC data.
Plasticizer loss in a complex system (polyamide 12): Kinetics
The kinetics and activation energy of plasticizer migration from a polyamide 12 were determined. The master-curve concept was introduced for plasticizer loss data and prediction purposes. Three methods were employed to predict the plasticizer loss at a low temperature.
Migration kinetics and mechanisms of plasticizers
Migration appeared in the interfaces of nitrate ester plasticized polyether (NEPE) based propellant/hydroxyl-terminated polybutadiene (HTPB) based liner/ethylene propylene terpolymer (EPDM) based...
- What is the migration kinetic mechanism of plastic stabilizers?
- At high contact temperature (40 °C for PLA and 60 °C for PP), the migration kinetic mechanism of stabilizers from plastics with no plasticizer content is very similar to that of plastics with 10 w % TBAC at low contact temperature (20 °C for PLA and 40 °C for PP). For example, BHT shows this behavior in case of both polymers.
- Does temperature affect the migration of stabilizers from plasticized PLA and PP?
- Migration of stabilizers from plasticized PLA and PP was studied. The migration rate of stabilizers increases with tributyl acetyl citrate content. Cluster analysis is a good tool to compare the kinetics of migration and swelling. Effect of elevated temperature on migration resembles that of plasticization.
- Do plasticizers increase migration?
- The increase of migration due to the plasticization effect of additives (especially plasticizers) can easily be comparable – both in extent and mechanism – with the promoting effect of increased contact temperature.
- Does migration occur in nitrate ester plasticized polyether based liner/ethylene propylene terpolymer?
- Abstract Migration appeared in the interfaces of nitrate ester plasticized polyether (NEPE) based propellant/hydroxyl-terminated polybutadiene (HTPB) based liner/ethylene propylene terpolymer (EPDM) based insulation was studied by aging at different temperatures.
- Why do plasticizers migrate from propellant to liner?
- The migration phenomenon occurs mainly due to the differential concentration of plasticizers and stabilizer between the additive part and the nonadditive part. All these components were added in propellant originally, and none was in liner, neither was in insulation, so they migrated from propellant to liner and insulation.
- Do plasticisers migrate from polymers to a gas phase?
- This paper addresses the kinetics and predictions of plasticiser migration from polymers to a surrounding gas phase, an important issue for plastic and rubber products exposed to high service temperature conditions and during accelerated ageing and testing.
