Resistance of dielectric polymer films with fillers in metal-polymer-metal systems

This article covers the development of the thermoplastic extrusion films made of poly(vinyl acetate) (PVA) and poly(butyl methacrylate) (PBMA) for use as an inner layer in metal-polymer-metal multiple-layered vibro-damping materials that can work in contact with water. The effect of the amount of the introduced plasticizer on the dynamic properties of polymer films made of PVA and PBMA is studied on the example of plasticizers from the group of esters of dicarboxylic acids, organic phosphates and chloroparaffins. The processes of water sorption by polymer films and washing out plasticizers from them have been investigated. It has been demonstrated that PBMA-based films containing chlorinated paraffins as a plasticizer have the best water resistance.

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ATTENUATION OF ULTRASONIC INTERFACE WAVES ON METAL-POLYMER-METAL BOUNDARIES

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19815179 ◽

1981 ◽

Vol 42 (C5) ◽

pp. C5-1159-C5-1163 ◽

Cited By ~ 1

Author(s):

R. O. Claus

Keyword(s):

Interface Waves ◽

Polymer Metal ◽

Metal Polymer

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A Mixed Numerical-Experimental Method to Characterize Metal-Polymer Interfaces for Crash Applications

Metals ◽

10.3390/met11050818 ◽

2021 ◽

Vol 11 (5) ◽

pp. 818

Author(s):

Jonas Richter ◽

Moritz Kuhtz ◽

Andreas Hornig ◽

Mohamed Harhash ◽

Heinz Palkowski ◽

...

Keyword(s):

Experimental Parameter ◽

Dissimilar Materials ◽

Calibration Method ◽

Parameter Determination ◽

Failure Behavior ◽

Cohesive Elements ◽

Interface Failure ◽

Wide Range ◽

Polymer Metal ◽

Metal Polymer

Metallic (M) and polymer (P) materials as layered hybrid metal-polymer-metal (MPM) sandwiches offer a wide range of applications by combining the advantages of both material classes. The interfaces between the materials have a considerable impact on the resulting mechanical properties of the composite and its structural performance. Besides the fact that the experimental methods to determine the properties of the single constituents are well established, the characterization of interface failure behavior between dissimilar materials is very challenging. In this study, a mixed numerical–experimental approach for the determination of the mode I energy release rate is investigated. Using the example of an interface between a steel (St) and a thermoplastic polyolefin (PP/PE), the process of specimen development, experimental parameter determination, and numerical calibration is presented. A modified design of the Double Cantilever Beam (DCB) is utilized to characterize the interlaminar properties and a tailored experimental setup is presented. For this, an inverse calibration method is used by employing numerical studies using cohesive elements and the explicit solver of LS-DYNA based on the force-displacement and crack propagation results.

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INFLUENCE OF THE DYNAMICS OF FORCED MOTION ON THE STATIC FRICTION IN METAL-POLYMER SLIDING PAIRS

Tribologia ◽

10.5604/01.3001.0015.4897 ◽

2021 ◽

Vol 295 (1) ◽

pp. 21-26

Author(s):

Mariusz Opałka ◽

Wojciech Wieleba ◽

Angelika Radzińska

Keyword(s):

Relative Motion ◽

Friction Pair ◽

Polymeric Materials ◽

Static Friction ◽

Metallic Materials ◽

Test Results ◽

Friction Resistance ◽

Rate Of Increase ◽

Polymer Metal ◽

Metal Polymer

The resistance during the frictional interaction of polymeric materials with metallic materials is characterized by a significant dependence on the dynamics of the motion inputs. In a metal-polymer friction pair, the static friction resistance during standstill under load depends on the rate of growth of the force causing the relative motion. Tribological tests of selected (polymer-metal) sliding pairs were carried out. The selected polymers were polyurethane (TPU), polysulfone (PSU), and silicone rubber (SI). They interacted with a pin made of normalized C45 steel under unitary pressure p = 0.5 MPa in dry friction conditions at different gradients of the force driving the relative motion (dF/dt = 0.1-20 [N/s]). The static friction coefficient of the selected sliding pairs was determined on the basis of the recorded static friction force values. The test results show a significant influence of the rate of increase in the motion driving force on the values of static friction resistance. This is mainly due to the viscoelastic properties of polymers.

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