Low-adhesion coatings with solid-state lubricants
A solid lubricant, low-adhesion technology, used in coatings, as well as systems, in the field of low-adhesion materials, which can solve problems such as the lack of ice adhesion
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example 1
[0236] Example 1: Baseline polymer without solid lubricant.
[0237] 4,4'-Methylenebis(cyclohexylisocyanate) (HMDI), 1,1,1-tris(hydroxymethyl)propane (TMP), and dibutyltin dilaurate (DBTDL) were purchased from Sigma-Aldrich Company (Sigma Aldrich). 5147X PFPE-ethoxylated diol was purchased from Solvay Specialty Polymers.
[0238] 5147X PFPE-ethoxylated diol (4.5 mmol, 10.8 g) and HMDI (22.5 mmol, 5.895 g) were added to a three-necked flask equipped with a mechanical stirrer. The reaction flask was placed in a 100°C oil bath. The reaction was carried out under argon. 3.66mg of DBTDL was added to the mixture. The reaction mixture was stirred at 100°C for 1 hour. The reaction flask was removed from the 100 °C oil bath and allowed to cool before adding THF (20 mL) and TMP (12 mmol, 1.611 g) dissolved in MEK (10 mL). Films were cast into sheets or sprayed onto aluminum coupons.
example 2
[0239] Example 2: With 15.7 vol% MoS 2 low-adhesion polymers.
[0240] 4,4'-Methylenebis(cyclohexylisocyanate) (HMDI), 1,1,1-tris(hydroxymethyl)propane (TMP), dibutyltin dilaurate (DBTDL), and molybdenum(IV) sulfide Purchased from Sigma-Aldrich Corporation. 5147X PFPE-ethoxylated diol was purchased from Solvay Specialty Polymers.
[0241] 5147X PFPE-ethoxylated diol (3 mmol, 7.2 g) and HMDI (15 mmol, 3.93 g) were added to a three-necked flask equipped with a mechanical stirrer. The reaction flask was placed in a 100°C oil bath. The reaction was carried out under argon. 2.5 mg DBTDL was added to the mixture. The reaction mixture was stirred at 100°C for 1 hour. The reaction flask was removed from the 100 °C oil bath and allowed to cool before adding THF (15 mL) and TMP (8 mmol, 1.074 g) dissolved in MEK (7 mL). 7gMoS 2Add to prepolymer and mix well on FlackTek SpeedMixer. Films were cast into sheets or sprayed onto aluminum coupons.
example 3
[0242] Example 3: Low adhesion polymer with 15.7 vol% graphite.
[0243] 4,4'-Methylenebis(cyclohexylisocyanate) (HMDI), 1,1,1-tris(hydroxymethyl)propane (TMP), and dibutyltin dilaurate (DBTDL) were purchased from Sigma-Aldrich company. 5147X PFPE-ethoxylated diol was purchased from Solvay Specialty Polymers. CPREME G8 graphite was purchased from ConocoPhillips.
[0244] 5147X PFPE-ethoxylated diol (3 mmol, 7.2 g) and HMDI (15 mmol, 3.93 g) were added to a three-necked flask equipped with a mechanical stirrer. The reaction flask was placed in a 100°C oil bath. The reaction was carried out under argon. 2.5 mg DBTDL was added to the mixture. The reaction mixture was stirred at 100°C for 1 hour. The reaction flask was removed from the 100 °C oil bath and allowed to cool before adding THF (15 mL) and TMP (8 mmol, 1.074 g) dissolved in MEK (7 mL). 3.1 g of graphite was added to the prepolymer and mixed well on the FlackTek SpeedMixer. Films were cast into sheets or sprayed ...
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