Crafts molds making by RTV-2 silicon rubber

Applications of silicone rubber

Silicone rubber is mainly applied for making various molds,such as reproduction of poly resin, epoxy, polyurethane-polymer, plaster, gypsum, soaps, candle & lighting, architecture, decorative  arts and crafts, plastic toy, gift and stationery, big statue, cultural relic product, etc.

Features of silicone rubber

1. Good characteristics of easy-operation 

2. Light viscosity and good flowability

3. Low shrinkage

4. Favorable tension

5. No deformation

6. Favorable hardness

7. High temperature resistance, acid and alkali-resistance and ageing resistance

The brief descripsions about thesilicone rubber 

silicone rubber is a white or red flowable liquid with a hardness of 22—50A° when cured. If large products and therefore multiple-piece molds are needed by customers, silicone rubber with higher hardness will be required for the molds. Conversely, soft silicon is indispensable for molds with complicated pattern and delicate details. The amount of curing agent admixture depends on the actual need of customers. More will be added for speedy drying and fast release and less when otherwise. 

FAQ of  silicone rubber   

Why is the tear strength of the silicone mold weak?
In order to reduce the viscosity of silicone rubber and pursue a good quality, you may add a lot of silicone oil into the silicon rubber when making molds. In fact, it might have just the opposite effect. The tension and the tear strength will be reduced badly with the addition of silicon oil. And the silicon molds will be in a weak and flimsy manner.

Any questions of silicone rubber for moldmaking, please feel free to contact Kaimi:

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