Name: Silicone PSA DT-Resin for High-Temp Applications
Brand: Coatingsink
SKU: silicone-psa-dt-resin
Availability: PreOrder

Question 1

What is the recommended resin-to-polymer ratio for optimal high-temperature peel performance?

Accepted Answer

A 55/45 DT-resin to silicone polymer ratio (w/w) typically delivers the best balance of tack, peel strength (>5 N/25mm at 200°C), and cohesive integrity up to 260°C. Increasing resin content above 60% improves adhesion to low-surface-energy substrates but may reduce cohesion at elevated temperatures.

Question 2

Which solvents are compatible with Silicone PSA DT-Resin during formulation?

Accepted Answer

The resin is supplied as a 60% solution in xylene. Toluene and VM&P naphtha are compatible co-solvents for viscosity adjustment. Avoid ketones and esters, which can cause precipitation of the MQ resin fraction. Coating films should be dried at 100–130°C for 2–3 minutes followed by post-cure at 150°C for dimensional stability.

Question 3

How does the diphenyl substitution affect liner release and temperature resistance compared to standard MQ resins?

Accepted Answer

Diphenyl silicone MQ resins provide enhanced thermal stability over dimethyl-only MQ grades due to the restricted mobility of phenyl groups at elevated temperatures. This raises the service ceiling to 260°C versus ~200°C for PDMS-based systems. The bulkier phenyl groups also increase peel adhesion on fluoropolymer and siliconized PET liners, so liner release values should be validated at 1–5 N/25mm to avoid delamination.

Viscosity (25°C)	800–1500 mPa·s
Resin/Polymer Ratio	55/45 (w/w)
Service Temperature	up to 260°C
Solid Content (xylene)	60 ± 2%
Peel Strength (200°C, 25 mm)	>5 N/25mm

Silicone PSA DT-Resin for High-Temp Applications

Specifications

FAQ

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