silicone rubber for making simulation of FRP sculpture moulds RTV M 30 |

silicone rubber for making simulation of FRP sculpture moulds RTV M 30 |

Specifications

rtv2 silicone rubber 
silicone rubber material 
silicone rubber component 
molding silicone rubber 
silicone rubber, silicone

Introduction of RTV-2 Silicone Rubber for scultpure FRP Mold Making 

RTV-2 is a two-component Room-Temperature-Vulcanizing (RTV-2) silicone rubber. Depending on its curing mechanism, two types of RTV-2 are available: "condensation" cure type and "addition" cure type. RTV-2 Silicone Rubber is a kind of two-component material, which consists of Part A base silicone rubber and Part B CA22 curing agent; then the silicone rubber base and curing agent can cure at room temperature by a condensation reaction. These materials can be cast into the cured silicone rubber mold: plaster, polyurethane, PU, GRC, cement, resin, polyester, wax etc.

Specifications of Lianhuan RTV-2 Silicone Rubber

Room Temperature Vulcanization

Equipped with REACH certificate

Professional technician with rich experience

3% catalyst offers for free of charge

Silicone rubber hardness range: 10-60 shore A

High duplicating silicone rubber molds

Characteristics of RTV-2 Silicone Rubber for scupture FRP Mold Making 

1. Good flow ability and long working time

2. Low hardness, easy de-mold

3. High tear and tensile strength

4. Acid and alkali-resistance

5. Low linear shrinkage

Instructions for Making Soap Silicone Rubber Molds

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

Pour the mixed Part A base silicone rubber and CA-22 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 rubber mold. 

FAQ of RTV-2 Silicone Rubber for Mold Making

Why does the RTV silicone rubber for molding have few mold making times?

The silicone rubber mold has few molding times is due to follwoing reasons: adding too much silicone oil which will destroy the molecular of silicone rubber; making the mold for small and fine detailed products with higher hardness silicone rubber which is easy to break; making the mold for large products with soft silicone rubber which will reduce the tensile and tear strength of the mold, and the mold will have deformation. Thus, we should take the proper silicone rubber to make the mold for suitable products.

For details, please feel free to contact MS Nancy xie

Phone:0086-13699849627

Skype:nancyxie2007

Email:nancy(dot)lhsilicone(dot)com