Name: ZEMSIL SR-P
Brand: ZEMSIL

Question 1

What is ZEMSIL SR-P?

Accepted Answer

ZEMSIL SR-P (Phenyl-modified Silicone Resin) is a ZEMSIL® silicone material. ZEMSIL SR-P is a phenyl-modified silicone resin containing 20–30 mol% phenyl groups, supplied as a 60% solution in xylene. The phenyl substitution raises both the thermal stability limit to 350°C and the refractive index to approximately 1.50, making it suitable for optical and aerospace-grade coatings. It delivers superior compatibility with organic resins compared to purely methyl-functional silicone resins.

Question 2

What is ZEMSIL SR-P equivalent to?

Accepted Answer

ZEMSIL SR-P is equivalent to Dow Corning 840, Wacker SILRES H62 C and can be used as a direct drop-in replacement in most formulations.

Question 3

What are the main applications of ZEMSIL SR-P?

Accepted Answer

ZEMSIL SR-P is used in: Aerospace and defense high-temperature coatings (to 350°C), High-refractive-index optical coatings and lens encapsulants, Heat-resistant enamel paint for cookware and industrial equipment, Radiation-resistant electrical insulation coatings.

Question 4

What are the key specifications of ZEMSIL SR-P?

Accepted Answer

Solid Content: 60 ± 2 %; Solvent: Xylene; Solution Viscosity @ 25°C: ~500 mPa·s; Softening Point (neat resin): 60–80 °C; Phenyl Content: 20–30 mol%

ZEMSIL SR-P

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خاصیت	مقدار	واحد	روش آزمون
Solid Content	60 ± 2	%	—
Solvent	Xylene	—	—
Solution Viscosity @ 25°C	~500	mPa·s	—
Softening Point (neat resin)	60–80	°C	—
Phenyl Content	20–30	mol%	—