Optical-grade | Square Silicone Official Site

SQUARE® LIM 1020 series

It is a two part and platinum curable liquid silicone rubber for injection molding or infusion molding for manufacturing various structure parts.

Key Feature:

Light transmittance≥93%
FDA 21 CFR 177.2600
ROHS and REACH certificate

Basic Model:

LIM1020-30A/B LIM1020-40A/B LIM1020-50A/B LIM1020-60A/B LIM1020-70A/B LIM1020-30A/B LIM1020-80A/B

Properties:

Typical Properties

Properties	Test Method	Unit	LIM1020-30A/B	LIM1020-40A/B	LIM1020-50A/B	LIM1020-60A/B	LIM1020-70A/B	LIM1020-80A/B
Appearance	Visual	/	Transparent	Transparent	Transparent	Transparent	Transparent	Transparent
Ratio A:B		/	1：1	1：1	1：1	1：1	1：1	1：1
Viscosity	DIN53019	mPa.s	（3～5）×10⁴	(3～5)×10⁴	(6～8)×10⁴	(12～15)×10⁴	（3～5）×10⁴	（3～5）×10⁴
Light Transmittance （450 nm,1mm）		%	≥94	≥94	≥94	≥93	≥93	≥93
Rebound			≥70	≥60	≥45	≥40	≥35	≥30
Hardness Shore A	D2240	A	30±2	40±2	50±2	60±2	70±2	80±2
Tensile Strength	D412	MPa	≥3.5	≥4	≥5	≥5.2	≥5.5	≥6
Tear Strength	D624B	KN/m	≥7	≥9	≥13	≥15	≥15.50	≥16
Elongation at Break	D412	%	≥300	≥300	≥300	≥280	≥200	≥200
Compression Set	DIN53 517 22hrs @ 175℃	%	≤1.5	≤1.5	≤1.5	≤1.5	≤1.5	≤1.5
Refractive index （25℃）		/	1.41	1.41	1.41	1.41	1.41	1.41

Applications

For crystal cup, earphone sleeve, optical lens and parts, gasket ring, trade mark logo.

Packaging

SQUARE® LIM1020 series are available in 20 kgs pail or 205 kgs drum.

Documents:

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