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Good Quality Addition Cure Platinum Catalyzed RTV-2 Liquid Silicone Rubber For Making Shoe Insole Molds

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Good Quality Addition Cure Platinum Catalyzed RTV-2 Liquid Silicone Rubber For Making Shoe Insole Molds

Country/Region	china
City & Province	dongguan guangdong
Categories	Nitrile Rubber

Product Details

RTV-2 Liquid Addition Cure Silicone Rubber For Making Molds

Product description

Two-component addition type silicone rubber Silicone Rubber is a two-part, platinum-catalyzed, liquid silicone system that cures (RTV) to a Shore A05 rubber. The polymerization can be accelerated by heat. The silicone components are delivered as liquids, which once mixed and cured transform into a transparent, elastic and resistant material. Polymerization occurs without formation of heat.

Applications

Making molds for candle, soap, jewelry, resin crafts, plaster, cement, cake decorations, etc.

Technical Properties

Item No.	MCPLA-L10 A/B
Appearance	Viscous liquid
Color	Translucent
Viscosity ( cps,approx.)	7000-9000
Mix ratio (A:B)	1:1
Working time(at 25℃ ,minutes)	30-40
Curing time(at 25℃,hrs,approx.)	4-6
Hardness Shore A(after 24 h)	10
Tensile Strength(Mpa,after 24 h)	2.8
Elongation(%)	600
Tear Strength(N/mm)	13-15
Linear Shrinkage (%)	0.1

Features

Very soft
Good flowability
Odorless
Long casting
Skin safe
Easy processing - mixing ratio 1 : 1
Adjustable working time and curing time

Processing and Instructions of Platinum Cure Silicones

1.Moulding

The mixture should be degassed preferably at 30 to 50 mbar to eliminate any entrapped air. If a dispensing machine is used, the two components are degassed separately prior to mixing. The silicone mixture expands to 3-4 times of its initial volume and bubbles rise to the surface. The bubbles progressively disappear and the mixture returns to its initial volume after 5 to 10 minutes. Wait a few minutes to complete the degassing and then flash the vacuum. The silicone is ready for pouring, either by gravity or under low pressure.

2.Mixing the two components

According the mixing ration 10:1 or 1:1 weighting A and B, the two components may be thoroughly mixed either by hand or using a low-speed electric to minimize the degassing of bubbles and to avoid any temperature increase. Note: It is also possible to use a special mixing and dispensing machine for the silicone components, further information is available upon request.

Note: Flashing the vacuum once or twice accelerates the degassing. It is recommended to use a container with a high diameter/height ratio (3 to 4 times of the initial volume)

3. Polymerisation

The curing may be slowed down at lower temperature or accelerated by applying heat.

Note:

Contamination from sulfur (e.g., sulfur-based clay), amines, tin compounds, cured polyester resin, some paints and some silicone rubbers may inhibit surface cure of platinum-cured rubbers.

Apply a release agent, Although not usually necessary, a release agent will make demolding easier when casting into most surfaces.

Packaging

20kg per drum, 200kg per drum

Storage and shelf life
MC Silicone MCPLA -L Series should be used within 12 months from the manufacturing date. Beyond this date, MC silicone no longer guarantees the products confirms with the sales Specification. In order to preserve best properties it is recommended to follow strictly the following guild lines:

Store the original packing tightly sealed and at a temperature below 30 degree Celsius.
Use the product as soon as the packaging has been opened.