BD-811 High Tear Resistance Self-Bonding Addition-Cured Liquid Silicone Rubber

Chemical Composition

Two-component liquid silicone rubber (LSR)

Typical Physical Data

Component Physical Properties

Property	BD-811A	BD-811B
Appearance	Flowable viscous liquid	Flowable viscous liquid
Color	Translucent	Translucent
Specific Gravity	1.04	1.04

Mixing and Curing Properties

Performance Indicator	Typical Physical Data	Reference Range
Mix Ratio	1:1	-
Mixed Viscosity (25℃±2, mPa.s)	75000	50000-100000
Hardness (Shore A)	65	≥60
Tensile Strength (MPa)	7.5	≥7
Tear Strength (kN/m)	45	≥40
Elongation at Break (%)	600	≥500
Pot Life	25±2℃, ≥12 hours	-

Product Features

• Non-conventional silica reinforcement; moderate system viscosity with excellent flowability;
• High tear strength and high elongation at break;
• Platinum-cured, environmentally friendly, safe, and non-toxic;
• Excellent self-bonding properties to various plastics such as PET, PC, and PI without the need for priming.

Applications

• High tear resistance silicone products, self-bonding silicone rubber components, etc.

Processing Method

• Mixing can be performed via mechanical stirring of A/B components or by using a static mixer;
• Ensure all equipment is thoroughly cleaned before use; contact with substances containing tin salts, amines, or sulfur may cause cure inhibition;
• Curing can be performed within a temperature range of 40-150°C. Vulcanization at medium temperatures above 130°C is recommended to facilitate complete cross-linking; however, for thicker sections, care should be taken as rapid curing may lead to air entrapment/voids;
• The final properties of the cured material depend on specific curing conditions. It is recommended to perform pilot tests to determine optimal curing parameters.

Packaging & Storage

Available in 1kg and 25kg units; custom packaging available upon request. Store in a cool, dry, and sealed environment.