liquid silicone for insulator

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liquid silicone for insulator
Posting date : Nov 29, 2010
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40-
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1.2, Medium and high votage resistance LSR 1) Basic model:LIM2930A/B and LIM2945AB 2) Product Description 2-part liquid silicone rubber,which is suitable for injection or extrusion molding with tracking resistance 1A 3.5 grade, mixing ration of parts A:B=1:1,withstanding middle and high voltage, catalyzed by platinum .The appearance of A is transparent and B is gray. 3) Key Features Outstanding anti-ageing High elongation and low tension set High tear strength Excellent tracking resistance Excellent electric performance Rapid vulcanization 4) Applications Indoor cold shrink and terminal, tie-in and jacket etc suitable for injection and extrusion molding Medium and high voltage resistant cable accessories. 5) Storage Correctly stored in its original closed container at room temperature (max 30℃). SQUARE® LIM2930/2945AB has a shelf life of 12 months. The ready to use LIM2930/2945AB should be kept tightly closed, if doesn’t , it will affect the shelf life. 6) How to use Ready-to-use mixtures(components A and B)are fed directly to injection molding machine from the original containers by means of a metering end mixing unit (called static mixer) The mixture(at the mixing ratio 1:1) is injected into the heated mould. The shelf life is 7 days (23°C) after mixing. The pipline should be cleared if the machine won’t work for long time. 7) Packaging SQUARE®LIM2930A/B and LIM2945A/B are available in 20kgs pails or 200kgs drums. 8) Typical Properties Uncured Properties Item Standard Unit LIM2945A/B LIM2930A/B Viscosity(Y=10.0S-1) DIN53479 Pa.s 1100 1200 Appearance A: Transparent B: Grey Solid content % 100 100 Cured Properties Specific Gravity DIN53505 1.13 1.12 Shore A hardness DIN53 504 ºA 35 30 Tensile strength DIN53 504 Mpa 9.0 8.0 Elongation at break ASTMD624B % 800 800 Tear resistance D412 N/mm 28 25 Tension set :Keeping 200% extension for 48 hrs at 50℃ D412 % ≤3.0 <3.0 Volume Resistivity GB/T1692-1992 Ω.m 1015 1015 Dielectric constant (50Hz) GB/T1691-198 2.8 2.8 Dielectric Strength GB/T1695–2005 Kv/mm 26 26 Tension set :Keeping 300% extension for 15 hrs at 120℃ GB/T1692-1992 % <8.0 <8.0 Dissipation factor(50z) GB/T1691-198 0.0016 0.0016 9) Remarks The viscosity is tested by NDJ-79#Rotary viscosimeter Condition of production:curing 10 minutes at140°C,post cure4hrs at 200°C GB is Chinese national standard These figures are for reference only, Please contact us for detail

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