These solder alloys were chosen due to the differences in their melting ranges
. In theory, wider melting ranges
permit slower freezing behavior, which gives more time for gas bubbles to escape the solder joints.
Practically, the simulations were run for no PCM and a different melting range
from 20-26 (e.g., 21-22, 22-23).
As Figure 5 shows, the minimum temperature fluctuation is seen for PCM with melting range
of 21[degrees]C to 23[degrees]C.
Therefore, it can be concluded that the crystallinity, melting point, and melting range
of PLLA are intensively influenced by the racemization and purity.
This contamination will alter the original alloy by lowering the melting point and extending the melting range
, and will result in different alloys/phases present in the solder pot.
It was found that this liquid EOC adheres well to the PP surface even at low temperatures, well below the PP melting range
. The bonding mechanism was claimed to be dominated by Rouse-type fingering cooperative relaxation movements, and therefore the penetration depth would be in the range of the longest Rouse chain length, producing some adhesion but not efficient entanglements.
This method may be used for Pb-free solders by identifying the melting range
(Table 1) and setting the hot plate to the melting point.
The typical broad melting range
and slightly amphiphilic character of Lipex[TM] Cellect result in excellent sensory properties for skin care formulations Lipex[TM] Cellect finds applications in products fighting premature aging as well as in daily-care products for sensitive and dry skin conditions.
Using the technique of diffErential scanning calorimetry (DSC), a new service offered by the company allows determination of absolute purity based on the premise that even trace amounts of impurities lower the melting point of a material and broaden its overall melting range
. With standards of known purity not readily available for many pharmaceutical and organic materials, the new method helps simplify documentation and reduce time-to-market.
The technique can identify 35 to more than 100 triglycerides in 2 hours and will help researchers correlate triglyceride composition with the physical properties it imparts to food: melting range
, mouth feel and reaction to refrigeration.
Hence, crystalline and liquid cyclohexane are in equilibrium and a narrow melting range
Broad melting range
reportedly aids calendering, while low draw resonance permits high throughputs in cast film.