General properties impact

Regarding the properties required of the solidified materials in 2D printing, the most important properties are generally related to thin material layers, such as color, adhesion to the substrate, hghtfastness, and scratch resistance, whereas in 3D printing, the most important properties are generally related to the bulk material mechanical and thermomechanical properties, for example tensile and flexural properties, impact resistance, and Glass Transition Temperature (Tg). 

Amount of Rubber. Generally the impact strength of rubber-modified plastics increases with an increase in rubber content. Although the impact improves, it is usually at the sacrifice of other properties such as strength, modulus, heat distortion, weather resistance, and creep. 

We now discuss the impact of this general property on theories and models of the glass transition. The primary concern of most theories is to explain the temperature and pressure dependences of the structural relaxation time ra. The dispersion (n or >kww) °f the structural relaxation is either not addressed or... 

Initiated by the chemical dynamics simulations of Bunker [37,38] for the unimolecular decomposition of model triatomic molecules, computational chemistry has had an enormous impact on the development of unimolecular rate theory. Some of the calculations have been exploratory, in that potential energy functions have been used which do not represent a specific molecule or molecules, but instead describe general properties of a broad class of molecules. Such calculations have provided fundamental information concerning the unimolecular dissociation dynamics of molecules. The goal of other chemical dynamics simulations has been to accurately describe the unimolecular decomposition of specific molecules and make direct comparisons with experiment. The microscopic chemical dynamics obtained from these simulations is the detailed information required to formulate an accurate theory of unimolecular reaction rates. The role of computational chemistry in unimolecular kinetics was aptly described by Bunker [37] when he wrote The usual approach to chemical kinetic theory has been to base one s decisions on the relevance of various features of molecular motion upon the outcome of laboratory experiments. There is, however, no reason (other than the arduous calculations involved) why the bridge between experimental and theoretical reality might not equally well start on the opposite side of the gap. In this paper... results are reported of the simulation of the motion of large numbers of triatomic molecules by... 

Improves Impact strength of recycled polyamide products. General Properties ... 

PE is used more than any other thermoplastic polymer. There is a wide variety of grades and formulations available that have an eqnally wide range of properties. In general, the outstanding characteristics of PE are toughness, ease of processing, chemical resistance, abrasion resistance, electrical properties, impact resistance, low coefficient of friction, and near-zero moisture absorption. 

The relationship of tensile properties, impact properties, and austenite stability to compositional variations is very complex. The generally desirable features of high tensile and yield strength, adequate ductility, and high impact strength at low temperatures cannot be simply related to the effect of compositional variations on the austenite stability. A detailed discussion of the effect of compositional changes follows. 

The actual change in die cured epoxy properties is dependent on the level of LP used. In general, elongation, impact resistance, and tensile strength ineiease with increasing LP level, while brittleness decreases. 

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