The key aspects of the concrete mix that play an essential role in 3D printing include extrudability
, buildability, flowability, compressive strength, and open time.
was determined by measuring the amount of formulation extruded in 10 seconds.
Tube test (extrudability
test) Determines force necessary for removal of emulgel from tube and necessary to evaluate emulgel formulation for extrudability
Inherently superior in quality and intrinsic purity, a large proportion of EGA's annual billet production is cast in high extrudability
6063 alloy, in addition to other specifications such as 6060, 6061, 6082, 1000 and 3000 extrusion billets.
Compared with conventional TPEs, they boast superior resistance to skin oil, sweat, suntan lotion, and olive oil, while their extrudability
is said to be superior to that of PVC, TPU, and copolyester TPE.
However, the relatively high viscosity and molecular weight of the Nd-BR is inappropriate for ABS production since its high linearity promotes high cold flow behavior resulting in poor extrudability
and its molecular weight is difficult to control .
The test methods include evaluation of extrudability
(ability of the material to be forced, pressed, or pushed out), performance after artificial weathering, volumetric shrinkage upon cure, low temperature flexibility, extension-recovery, adhesion, slump, stain resistance, and of time during cure to loss of tack.
Soarus, LLC (Arlington Heights, Illinois USA), has introduced Nichigo G-Polymer, a "multifunctional barrier and water solution polymer developed by its parent company, Nippon Gohsei of Japan." Among the material's important properties, Soarus says, are biodegradability; water solubility at room temperature; the fact that it is non-foaming when dissolved in water; "outstanding" gas barrier; high clarity; and extrudability
with a wide melt-temperature-processing window.
The coating solutions are made with Borstar[R] technology that is said to provide plastics with especially good melt strength and extrudability
, enhanced mechanical and heat-deformation properties, and environmental stress-cracking resistance.
Other tests include the measurement of peel strength, extrudability
, hardness, elongation and 'quick stick' of products, such as labels, sealants, tapes and pastes.
The base charge is nitrocellulose, a polymer that gives body to the powder and allows extrudability
. The addition of nitroglycerine softens the propellant, raises the energy content, and reduces hygroscopicity.