RTV-2 Silicone Rubber for Shoe Mold Making

Description of RTV-2 Silicone Rubber for Shoe Mold Making

RTV-2 silicone rubber is a two-component material, the silicone consists of Part A silicone base and Part B CA30 curing agent, and the silicone base and curing agent can cure at room temperature by a condensation reaction. These materials can be cast into the cured silicone mold: shoe mold making, sand casting etc.

Applications of RTV-2 Silicone Rubber for Shoe Mold Making

RTV-3010/3015 silicone rubber is suited for shoe mold, simple products, sand casting mold making, and shoe mold by pouring way.

Data of RTV-2 Silicone Rubber for Shoe Mold Making

Base and Curing Agent Mixture (100:2 by weight) in 25℃(77℉) testing

P Item NO.	Characteristics before curing						Curing
	Part A	Part B		Part A+ Part B			Pot life at 250C mins	De-molding Time at 250C
	Appearance			Ratio	Viscosity cps
RTV3010	Liquid white	Liquid clear		100:2			5-10	4-6 H
RTV3015	Liquid white	Liquid clear		100:2			5-10	4-6 H
	Characteristics after curing 24 hours
	Hardness Shore A		Tear strength (N/mm)	Tensile Strength(Mpa)		Elongation break (%)	Linear Shrinkage
RTV3010	10-13		18			550	≤0.3%
RTV3015	15-18		20			600	≤0.3%

How to make the silicone mold?

1. Preparing

The surface of the original objects should be clean and free of loose material. If your products have thin flower patterns, and especially have porous substrates, please use a suitable mold release agent such as soap water, detergent, Vaseline or petroleum jelly.

2. Mixing

Please weigh Part A silicone base and part B CA30 Curing Agent with ratio of 100:2 into a clean container. Stir Part A base silicone thoroughly before use, then Mix Part A and Part B evenly until the curing agent completely dispersed in the silicone base. Manual or mechanical mixture can be used, but do not last much time or allow the temperature to exceed 35℃ (95℉).it’s suitable to mix small quantities to ensure thorough mixture of silicone base and curing agent.

Note: It is strongly recommended that entrapped air be removed in a vacuum chamber, allowing the mixture to completely expand and then collapse. After a further 1 to 2 minutes under vacuum, the mixture should be inspected and can be used if free of air bubbles. A volume increase of 3-5 times will occur on vacuum de-airing the mixture. So a suitably large container should be chosen.

3. Pouring the mixture and curing

Pour the mixed Part A base silicone and CA-30 curing agent as soon as possible onto the original object, avoiding air entrapment. The catalyzed material will cure to a flexible rubber within 6 hours (or faster by different mixing ratio or room temperature), we advice you de-mold after 24 hours, it is will improve the replicate times of silicone mold.

Storage of RTV-2 Silicone Rubber

When the silicone rubber is stored at or below 30℃ (85℉) in the original unopened containers, RTV3010/3015 silicone base and CA30 curing agent have a usable life of 12 months from the date of production.

Note of RTV-2 Silicone Rubber

RTV-3010/3015 silicone rubber is an industrial product and must not be used in food molding, dental human skin molding applications.

Packing of RTV-2 Silicone Rubber

Part A base silicone: 20kg/drum, 25kg/drum or 200kg/drum

Part B CA30 Curing Agent: 0.25kg/bottle,1kg/bottle and 10kg/bottle

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