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Silicone Material Solutions for Smart Grids

Properties: Both liquid silicone rubber and solid silicone rubber exhibit excellent hydrophobicity, outstanding resistance to high and low temperatures, superior weatherability, and remarkable resistance to electrical tracking. They can be used continuously over a temperature range of –40°C to 200°C.

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Phone:020-36896519

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Features:

Liquid silicone rubber and solid silicone rubber exhibit excellent hydrophobicity, outstanding resistance to both high and low temperatures, superior weatherability, and remarkable resistance to electrical tracking. They can be used continuously over a temperature range of –40°C to 200°C.

Applications:

It is suitable for insulation and conductivity applications in power products such as cold-shrink cable accessories and plug‑in connectors.

Typical Performance Data	Test Method	Unit	RH7270-40X	RH7360-40X	RH7280-45X	RH7380-45X
Appearance	Visual estimation	/	Translucent/Gray	Gray	Black	Black
Viscosity	DIN53019	mPa·s	150,000		400,000
Hardness	GB/T531.1	Shore A	40±2	40±2	45±2	45±2
Density	GB/T533	g/cm3	1.12±0.01	1.2±0.01	1.35±0.01	1.35±0.01
Tensile strength	GB/T528	MPa	≥8.0	≥8.0	≥6.0	≥6.0
Elongation at break	GB/T528	%	≥650	≥650	≥450	≥450
Tear strength	GB/T529	kN/m	≥35	≥35	≥25	≥25
Permanent deformation upon rupture	GB/T528	%	≤3.2	≤3.2	≤3.2	≤3.2
Linear shrinkage rate	GB-T14235.4	%	≤2.5	≤2.5	≤2.5	≤2.5
Dielectric strength	GB/T1408.1	kV/mm	≥22	≥22	--	--
Volume resistivity	GB 1410	Ω∙cm	1×10 ¹⁵	1×10 ¹⁵	≤80	≤80
Dielectric constant (50 Hz)	GB 1409	/	2.8-3.2	2.8-3.2	--	--
Dielectric loss (50 Hz)	GB 1409	/	0.005-0.007	0.005-0.007	--	--
Tracking resistance performance	GB/T 6553	/	1A4.5	1A4.5	--	--
Application areas			Liquid-insulated plug-in connector	Solid-insulated plug-in connector	Liquid-conductive plug-in connector	Solid-conductivity plug-in connector

Test Items	Test Method	Unit	RH7270-40Y	RH7270-40Z	RH7360-40Y	RH7360-40Z	RH7280-40Y	RH7380-40Y
Appearance	Visual estimation	/	Translucent/Gray	Translucent/Gray	Translucent/Gray	Gray	Black/Black	Black
Viscosity	DIN53019	mPa·s	600,000	400,000	——	——	600,000	——
Hardness	GB/T531.1	Shore A	40±2	40±3	40±2	40±2	40±2	40±2
Density	GB/T533	g/cm3	1.12±0.01	1.12±0.01	1.12±0.01	1.12±0.01	1.35±0.01	1.35±0.01
Tensile strength	GB/T528	MPa	≥9	≥8.5	≥9.0	≥8.5	≥7.0	≥7.0
Elongation at break	GB/T528	%	≥700	≥650	≥700	≥650	≥500	≥500
Tear strength	GB/T529	kN/m	≥40	≥35	≥40	≥35	≥30	≥30
300% elongation at break, permanent deformation (120°C, 72 h)	GB/T528	%	≤6	≤10	≤10	≤12	≤15	≤15
Linear shrinkage rate	GB-T14235.4	%	≤2.5	≤2.5	≤2.5	≤2.5	≤2.5	≤2.5
Dielectric strength	GB/T1408.1	kV/mm	≥22	≥22	≥20	≥20	--	--
Volume resistivity	GB 1410	Ω∙cm	1×10 ¹⁵	1×10 ¹⁵	1×10 ¹⁴	1×10 ¹⁵	≤80	≤80
Dielectric constant (50 Hz)	GB 1409	/	2.8-3.2	2.8-3.2	2.8-3.2	2.8-3.2	--	--
Dielectric loss (50 Hz)	GB 1409	/	0.005-0.007	0.005-0.007	0.005-0.007	0.005-0.007	--	--
Tracking resistance performance	GB/T 6553	/	1A4.5	1A3.5	1A4.5	1A3.5	--	--
Application areas			Liquid Cold-Shrink Accessories	Low-cost liquid cold shrink	Solid Cold-Shrink Accessories	Solid low-cost cold shrink	Liquid-conductive cold-shrink accessories	Solid-conductive cold-shrink accessories

Note:

Curing conditions: After thoroughly mixing the liquid adhesive’s A and B components in a 1:1 ratio, mold‑press at 175°C for 5 minutes using a 140 mm × 120 mm × 2 mm mold.
Solid adhesive: vulcanized using a 25‑sulfur system, molded in a 150 mm × 140 mm die, and cured at 175°C for 5 minutes.

·This data is for reference only; the actual material properties and molding process parameters shall be subject to those provided by our Technical Department.

Keywords:

Insulators, lightning arresters, solid-insulated pole-mounted switchgear, instrument transformers, and reactors

None

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Contact phone number:

020-36896519

Company email:

1541901416@qq.com

Huadu Company Address:

1st Floor, Building A2, Zone A, Meiwang Science and Technology Park, Guangzhou Airport Economic Zone (No. 6, Guangtang South Street, Xinya Subdistrict, Huadu District)

Zhaoqing Factory Address:

No. 33-3, Xin’an Avenue, Zhaoqing New District, Dinghu District, Zhaoqing City

Technical Support: Zhongqi Cross-border, Guangzhou

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