Silastic® Q7-7850

About
Liquid Silicone Rubber (LSR) raw material for medical device and component fabrication in the Healthcare Industry APPLICATIONS Silastic® Q7-7840 Liquid Silicone Rubber, Silastic ® Q7-7850 Liquid Silicone Rubber, and Silastic ® Q7-7870 Liquid Silicone Rubber, Parts A and B, are heat-cured elastomers for use by customers fabricating medical devices, including those intended for implantation in humans for less than 30 days and non-implant applications. Silastic Q7-7840 Liquid Silicone Rubber, Silastic Q7-7850 Liquid Silicone Rubber, and Silastic Q7-7870 Liquid Silicone Rubber are two-part platinum-catalyzed silicone elastomers specifically designed for liquid injection molding or supported extrusion. The elastomer is supplied as a two-part kit (Part A and Part B), equal portions (by weight) of which must be thoroughly blended together prior to use. The elastomers are thermally cured via an addition-cure (platinum catalyzed) reaction. When blended and cured as indicated the resulting elastomers consist of crosslinked dimethyl and methyl-vinyl siloxane copolymers and reinforcing silica. The elastomer can be used without any post-cure. Furthermore, the cured elastomer is heat stable up to 204°C (400°F), can be autoclaved, and exhibits high gas permeability compared with most other thermoset elastomers and thermoplastics.&&

About

Liquid Silicone Rubber (LSR) raw material for medical device and component fabrication in the Healthcare Industry APPLICATIONS Silastic® Q7-7840 Liquid Silicone Rubber, Silastic ® Q7-7850 Liquid Silicone Rubber, and Silastic ® Q7-7870 Liquid Silicone Rubber, Parts A and B, are heat-cured elastomers for use by customers fabricating medical devices, including those intended for implantation in humans for less than 30 days and non-implant applications. Silastic Q7-7840 Liquid Silicone Rubber, Silastic Q7-7850 Liquid Silicone Rubber, and Silastic Q7-7870 Liquid Silicone Rubber are two-part platinum-catalyzed silicone elastomers specifically designed for liquid injection molding or supported extrusion. The elastomer is supplied as a two-part kit (Part A and Part B), equal portions (by weight) of which must be thoroughly blended together prior to use. The elastomers are thermally cured via an addition-cure (platinum catalyzed) reaction. When blended and cured as indicated the resulting elastomers consist of crosslinked dimethyl and methyl-vinyl siloxane copolymers and reinforcing silica. The elastomer can be used without any post-cure. Furthermore, the cured elastomer is heat stable up to 204°C (400°F), can be autoclaved, and exhibits high gas permeability compared with most other thermoset elastomers and thermoplastics.&&

Product Description
Supplier	Dow Corning
Generic	硅酮
Material Status	Commercial: Active
Features	Permeability,Low to No Fogging,High pressure heat resistance,Fast Cure,Good coloring
Availabilitys	Africa & Middle East ,North America,Latin America,Asia Pacific,Europe
Process Methods	Injection Molding

Technical Data
PHYSICAL	Nominal value	Unit	Test method
Density	1.13	g/cm³	ASTM D792
Shrinkage rate
MD	2.3	%	Internal Method

MECHANICAL	Nominal value	Unit	Test method
Shore hardness
Shaw’s A	48		ASTM D2240

elastic body	Nominal value	Unit	Test method
tensile strength	9.00	MPa	ASTM D412
200% strain	2.60	MPa	ASTM D412
Tensile strain
fracture	660	%	ASTM D412
tear strength	48.2	kN/m	ASTM D624

Supplementary information	Nominal value	Unit	Test method
Curing rate
MDR T90，150℃	29.0	sec

Notes
1. Typical properties: these are not to be construed as specifications.
2. Die B
3. 3 min
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