Which material has the highest surface energy?

Which material has the highest surface energy?

Metal. Metals are strong and perform well across a wide range of temperatures and environments. They have very high surface energies and they’re open to contact with liquids and thus very easy to wet out.

What does high surface energy mean?

a strong molecular attraction
High surface energy means a strong molecular attraction, while low surface energy means weaker attractive forces. To understand the concept of surface energy, consider water on the un-waxed hood of a car. The hood that has not been waxed has high surface energy, so water puddles on the surface of the hood.

What is the surface energy of Teflon?

Surface tension of PTFE determined from the contact angle for n-alkanes in the homologous series from n-heptane to n-hexadecane on its surface is equal to 20.24 mN/m [26].

Is ABS high surface energy?

High surface energy plastics such as ABS and polycarbonate bond well with standard conventional adhesives and tapes possessing lower surface energy (LSE)….NEW ADHESIVES AND TAPES FOR LSE PLASTICS.

Is aluminum low surface energy?

Higher surface energy materials tend to be easier to stick to and lower surface energy materials tend to be harder to stick to. For example, an aluminum frying pan tends to be easier to stick to than a PTFE coated non-stick pan because aluminum has a much higher surface energy than PTFE.

What is the surface energy of stainless steel?

The surface energy of the untreated stainless steel plate coupon was 43 mJ/m2, which was higher than those of the coatings. The surface energy of the coatings was in the range of 23.34–40.68 mJ/m2. The surface energy of the aluminium silicate deposit was very high, about 56 mJ/m2.

What is the surface energy of aluminum?

That’s why water (surface tension = 72 dyn/cm) will wet-out an aluminum pan (surface energy = 840 dyn/cm), but it will bead-up on a PTFE non-stick pan (surface energy = 18 dyn/cm).

Is silicone low surface energy?

Silicone is a low surface energy elastomer.

Is vinyl a low surface energy plastic?

Low surface energy, or LSE, plastics include materials such as vinyl, polyethylene and polystyrene and have unique surface characteristics making them harder for pressure sensitive adhesives to stick. These plastics are generally soft and have low density which helps in lightweighting applications.

What is the surface energy of polyurethane?

The contact angle of DI water droplets was decreased to 17.2º from 70.04º after 5min UVO treatment. The surface free energy of PU films was 51.46mN/m prior to treatment and was increased to 71.5mN/m after being fully treated.

Does glass have high surface energy?

Generally, metals and glass have a high surface energy and plastics have a low surface energy.

What is the surface energy of HDPE?

The surface tension varies from 20.5 mJ m−2 at 190 °C, 1500 psi (10,335 kPa), to 25.5 mJ m−2 at 125 °C, 500 psi (3445 kPa). It is apparent that at a given pressure, the surface tension decreases with increasing temperature; at a given temperature, the surface tension decreases with increasing pressure.