Because of different strain-rates (crosshead
speeds) used in the tests, no averages and standard deviations are quoted.
Tensile tests were conducted in air with a crosshead
speed of 0.84 mm min-1 at various temperatures.
The effects of crosshead
speed on compressive strength and compressive modulus are shown in Figs.
Additionally, the company's single-point crosshead
is said to offer great flexibility to its users.
speed used in the study was 60 mm/min, equivalent to a strain rate of ~0.02 [s.sup.-1].
At least five specimens were tested for each crosshead
rate (0.5 mm/min to 500 mm/mm) or rubber content (up to 30 wt%).
JoeTools offers crosshead
dies in all sizes for wire/cable coating and in-line dies for pipe and tubing.
The cabinet is useful in many applications, according to the company, especially in crosshead
wire and cable extrusion processes, and during setup and changeover times.
A bisphenol A diglycidylether (DGEBA) epoxy was modified with up to 20 wt% of a core-shell rubber (CSR), and mechanical properties were investigated at different crosshead
rates (from 0.5 mm/min to 500 mm/mm).
The Micro Medical is an extrusion crosshead
that uses micro-fine adjustment screws for precise concentricity adjustment.
The process of polymer encapsulation of small-gauge wire used in the electronics and medical industries is a difficult one, often plagued by "neck-down." The uneven flow of polymer through the extruder crosshead
during the process often causes the ultra-fine wire to break.
The equipment used includes an Instron capillary rheometer with two types of dies, namely capillary dies and special annular dies (Nokia Maillefer wire coating crosshead
) attached to the rheometer, and an extruder.
The 500 Series crosshead
features MAGS gum space adjustment, and is designed specifically for the flow characteristics and processing challenges of elastomeric compounds.
These single-column units have crosshead
travel up to 34 in.
Capacity of the units ranges from 20N to 10kN, with crosshead
speed ranging from 0.5 to 500 mm/min and crosshead
speed accuracy of [+ or -]0.5% or [+ or -]0.025 mm/min, whichever is greater.