Low Viscosity Liquid Silicone for Power Cable Terminals / Insulator

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Product Description
LIM1520/LIM1550 is a two-component, platinum curable, low viscosity, liquid insulated silicone rubber for injection molding processes. Our liquid silicone rubber features safe operation, high dielectric strength, good tracking resistance, superior surface hydrophobic property, and more. It is suitable for producing housing and weather-sheds for instrument transformers and insulated bushing, and vacuum arc-extinguishing chamber.

Low Viscosity Liquid Silicone for Power Cable Terminals / Insulator

Storage
Keep sealed and store in a cool place below 30℃ before usage. It has a shelf life of 12 months.

Usage
When operate, part A and B can be injected directly to the heated mold from the original containers by mean of a metering and mixing unit. At the mold temperature of 90-150℃, silicone rubber cures within minutes according to the size. The pot life is 3-7days after mixing under 23℃. Clean pipe and machine when machine stoped for long time.

Packing
This liquid silicone rubber is packed in 20kg or 200kg barrels.

Model: LIM1520-35A/B, LIM1520-40A/B

Typical Properties

Before curing	Physical properties	Test method	Unit	LIM1520-35A/B	LIM1520-40A/B
	Appearance (Color)			Transparent for A, gray for B
	Solid content		%	100	100
	Viscosity	DIN53019	mPa.s	(5.0 ~ 6)×104	(5.0 ~ 6)×104
After curing	Specific gravity	D792		1.06	1.06
	SHORE Hardness	D2240	A	33 ~ 37	38 ~ 42
	Tensile strength	D412	MPa	≥5.5	≥ 6.5
	Elongation at Break	D412	%	≥450	≥450
	Tear strength	D624B	KN/m	≥15	≥15
	Volume resistivity	IEC60093	Ω.cm	1.0×1015	1.0×1015
	Dielectric constant, 50HZ	IEC60250		2.8	2.8
	Dissipation factor, 50HZ	IEC60250		0.0016	0.0016
	Tracking resistance	IEC60587	grade	1A3.5	1A3.5
	Dielectric strength	IEC60243	KV/mm	26	26

Basic Model:
LIM1550-35A/B, LIM1550-40A/B, LIM1550-45A/B

Applications
Housing and weather-sheds for composite insulator and bushing

Typical Properties

Before curing	Physical properties	Test method	Unit	LIM1550-35A/B	LIM1550-40A/B	LIM1550-45A/B
	Appearance (Color)			Transparent for A, gray for B
	Solid content		%	100	100	100
	Viscosity	DIN53019	mPa.s	(5.0 ~ 5.5)×104	(5.0 ~ 5.5)×104	(7.0 ~ 8.0)×104
After curing	Specific gravity	D792		1.06	1.06	1.06
	SHORE Hardness	D2240	A	33 ~ 37	38 ~ 42	43 ~ 47
	Tensile strength	D412	MPa	≥5.5	≥6.0	≥7.0
	Elongation at Break	D412	%	≥350	≥400	≥500
	Tear strength	D624B	KN/m	≥12.5	≥15	≥18
	Volume resistivity	IEC60093	Ω.cm	1.0×1015	1.0×1015	1.0×1015
	Dielectric constant, 50HZ	IEC60250		2.8	2.8	2.8
	Dissipation factor, 50HZ	IEC60250		0.0016	0.0016	0.0016
	Tracking resistance	IEC60587	grade	1A4.5	1A4.5	1A4.5
	Dielectric strength	IEC60243	KV/mm	26	26	26

Note:
The above technical properties are for reference only. For detailed molding conditions, please contact us directly.

Established in 2002, SQUARE Silicone Materials Company is a professional high voltage resistant grade low viscosity liquid silicone rubber manufacturer and supplier, based in China. We have been ISO9000 certified. In addition to high voltage insulator, we provide other silicone materials, such as food grade silicone and silicone rubber for medical purpose, etc. Thank you for visiting our website! If you have any queries, please feel free to contact us.

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