The crystallinity of Stanyl is approximately 70%, compared with 50% for PA66.
This results in a high heat distortion temperature of 190°C (375°F) for
unreinforced Stanyl and 290°C (555°F) for glass fiber reinforced Stanyl. These
features give Stanyl a technical edge over engineering plastics like polyamide
6 and 66, polyesters, and semi-aromatic polyamides (PPAs) with regard to heat
resistance, mechanical properties (including creep and fatigue) at elevated
temperatures, wear and friction behavior and, due to an advantage in
cycle-time, economical processing.
The excellent properties of Stanyl lead to
important advantages for the customer such as cost reduction, longer lifetime,
and high reliability. Stanyl provides the performance of high heat resins such
as LCP, PPS, and even PEEK with the ease of processability and design usually
found with standard engineering plastics.
Benefits for both molders and end users include:
High temperature resistance for under the-hood durability and lead-free solder
Excellent chemical resistance that helps increase lifetime of application
Longer lifetime and higher reliability of parts due to low creep, excellent
fatigue behavior, and low wear
Excellent mechanical properties allow for thinner walls which lead to weight
reduction and lower part prices
30% productivity increase of molding equipment based on cycle time alone
(productivity achievable through increase of number of cavities due to high
Greater design freedom due to the combination of excellent mechanical
properties and good mold-flow behavior
Ability to consistently fill very thin-walled products enabling the most
advanced products to be molded effortlessly
Use of regrind up to 25-50% possible without significant loss in properties
(economical benefit while maintaining product reliability)
Economical, safe, and convenient processing due to the use of 80°C (175°F)
No post-treatment due to absence of flash
No retooling necessary when switching from PA6, PA66, or polyesters when
rising temperatures require a higher heat resistant material
Tensile strength versus tensile modulus of Stanyl.