Description
ACC Neutral Cure RTV Silicone Adhesive Sealants are a range of silicone rubbers which combine the best of current silicone technologies within one system, providing the ultimate combination of process-ability and performance without any compromises. The formulations are based a new acetone cure mechanism which provides numerous advantages over older, conventional silicone RTV cures.

Key Features

Fast on cure	Skins in 5-8 minutes 3mm cure through in less than 24 hours
Tough on adhesion	Excellent adhesion to a wide range of metals and plastics Adhesion improves with age
High on temperature	Working temperature up to 300°C
Wide range	Paste, flowable and colours Thermally conductive
Low on hazards	Low exposure limits No VOCs No pungent acetic acid or MEKO (Ketoxime)
No corrosion	Will not corrode any sensitive metals including copper

Applications

Electronics

• Replace slow curing conventional alkoxy sealants for bonding and sealing
• Thermal transfer material for use on pcb's
• Improve productivity with faster cure cycles

• Replace aggressive acetoxy systems which produce acetic acid
• Reduce risk of corrosion to sensitive substrates
• Improve working conditions with lower exposure limits
• Reduce VOC emissions

Properties
Product	ACC AS1820	ACC AS1821	ACC AS1822	ACC AS1823	ACC AS1800	ACC AS1801	ACC AS1802	ACC AS1803	ACC AS1806	ACC AS1804	ACC AS1824	ACC AS1805
Old part number	1080W	1080B	1081W		1082W	1082B	1084G	1084W		1086	1087	1088
Type	Flowable	Flowable	Semi-flow, self leveling	Semi-flow, self leveling	Non-slump paste	Non-slump paste	Soft thermal paste, self leveling	Soft thermal paste, self leveling	Paste	Non-slump paste	Semi-flowable	Non-slump paste
High temperature
Best thermal conductivity
Colour	White	Black	White	Black	White	Black	Grey	White	Black	Black	Red	Red
Operating temperature range °C	-50 to 220	-50 to 220	-50 to 220	-50 to 250	-50 to 220	-50 to 220	-50 to 220	-50 to 220	-50 to 220	-50 to 250	-50 to 300	-50 to 300
Hardness Shore A	23	27	30	29	35	35	67	65	65	42	32	50
Tensile strength MPa	1.10	0.85	3.22	1.70	2.20	2.00	3.90	2.80	2.80	2.40	1.11	1.70
Elongation (%)	330	200	334	225	388	320	103	94	94	325	303	270
Tack free time (min)	6	10	5	4	2	2	4	4	2	2	6	4
Cure time to 3mm (hr)	<16	<24	<14	<12	<24	<24	<8	<8	<8	8	<10	8
Thermal conductivity W/m°K	0.20	0.20	0.20	0.20	0.20	0.20	2.30	1.55	1.55	0.20	0.20	0.20

• Technical Bulletin TB2004-08 - RTV Silicone Adhesive Sealants: A Brief Introduction to Acetone Cure

See also!  DYMAX UV & visible light curing adhesives & coatings for electronics assembly  Silicone thermally conductive compounds  Dispensing robots  310ml cartridge guns  ACC Silcoset silicone adhesive sealants

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October 2007
Version 3.1