Frequently Asked Question
Q:Why will the silicone mold be reused only for a few times?
A: It can be due to the following reasons:
a.Adding too much silicone oil into silicon rubber. Silicon oil is an additive which can destroy the molecular weight of silicone rubber and reduce the tension and tear strength.
b.Using the silicon rubber with a high hardness to make moulds for small sized products with delicate and intricate designs or the silicon rubber with a low hardness to makes moulds for large sized products with simple designs.
(Notes: we should choose the silicon rubber specifically according to the requirements of our products to avoid this problem.)
Q:Why does the silicone mold appear to dry outside but wet inside?
A: Because moulding silicone rubber is a kind of condensation silicone rubber, which get solidified after absorbing moisture from the air. In order to provide a significant shelf-life for the silicon rubber, we will dry out the water in the silicon rubber.
Solution: Add 0.1% water into the silicon rubber and Stir over a low speed briefly when you use it.
Q:Why is the silicone mold oily?
A: a. The moulding silicone rubber itself doesn’t contain any oil, so it won’t be oily. If the mould is oily, it may be because you add the compound silicone oil( the compound of silicon oil and white oil). The white oil is not silicone oil but a kind of petrochemicals.
b.Adding too much catalyst when you mixing the silicone rubber with catalyst. Too much catalyst will over catalyze the reaction. It will cause the silicone mould oily after curing.
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