G. Menges, E. Haberstroh, M. W. and E. Schmachtenberg (Eds.), Menges Werkstoffkunde Kunststoffe, 6th edition, Carl Hanser Verlag, Munich . User Review - Flag as inappropriate. simple and down to the point for mechanical and civil engineers very useful as a complementary book on the side. Werkstoffkunde der Kunststoffe. Von G. MENGES. München/Wien: Carl Hanser Verlag X u. S., kart., DM 34,–. F. Winkler · Search for more papers by.
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The impact strength rises with increasing concentration of the stabilizer, indicating a change in crystal structure.
The flowability is reduced by 1. This also suggests a reduction in the degree of crystallization .
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Less energy is required for melting the crystalline portions of the material. K defines the stiffness as a function menges werkstoffkunde kunststoffe the crystal structure. It is generally the case that the higher the value for K, the stiffer and more brittle a material is. In comparison with PLLA, there is a tendency for decline in the degree of crystallization of the stabilized samples.
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This might be menges werkstoffkunde kunststoffe reason for the menges werkstoffkunde kunststoffe of impact strength as well as of the cycle time figure 2. Influence of stablization on the thermal properties Fig.
By means of DSC, the melting ranges of the materials were recorded in order to draw conclusions about the degradation behavior. Molecular chain degradation generally yields shorter chain segments that melt at lower temperature and thus result in a lowered melting point, evaluated as maximum peak of the melting effects Tm.
With the 2nd DSC heating curve closed Al crucible, sample masses: The samples exposed to water exhibit a shift of Tm to lower temperatures max.
As follows, a higher concentration of the stabilizer offers longer protection against material degradation 1. The influence of the water immersion test on Tm from 0 - h figure 5 illustrates that the PLLA already exhibits a drastic degradation of the menges werkstoffkunde kunststoffe mass after 50 h in H2O.
Menges Werkstoffkunde Kunststoffe Menges Georg Haberstroh Edmund Michaeli W
This means a complete loss of the material's properties and functional failure of a component. These in turn should allow for conclusions to be drawn about the oxidation behavior due to exothermal reactions with oxygen [1, menges werkstoffkunde kunststoffe, 11].
This means that the PLLA has been successfully stabilized. The time from the first contact with O2 until the start of oxidation was measured .
The two stabilized samples 1 - 1. Influence of stabilization on the Oxidation Induction Temperature Menges werkstoffkunde kunststoffe. Pratinjau tidak tersedia - Istilah dan frasa umum acid menges werkstoffkunde kunststoffe antibacterial antimicrobial antimicrobial activity antimicrobial agents APP jet Appl applications atmospheric pressure plasma bacteria Bahners biocomposites biodegradable Biomaterials catalysts cell cellulose cellulose fibres characterization Chem chemical chitosan coating compounds contact angle copper cotton fabrics cross-linking deposition developed droplet durability effect electrospun fiber surface fibre bundles fibrous Figure films finishing flame retardant functional grafting green composites hybrid hydrogel hydrophilic hydrophobic increased interface irradiation K.