The Difference Between Silicone Gel Products and PVC Products
Silica gel and PVC flexible glue are two kinds of materials that are commonly used in handicrafts. The differences between the silica gel and the PVC flexible glue are as follows:
By the material itself, PVC products are mainly composed of PVC powder (polyvinyl chloride) and oil, color paste mixed, and silica gel products are mainly made by the rubber mixing machine through chemical reaction of silicone raw materials and pigment paste, the materials required will heating cooling and molding in mould by oil press.
By the appearance of the products, PVC products are relatively coarse compared to silicone products. The surface of silicone products are smooth and with different shade of color.
Judging from the hand feeling, silicone products are soft, flexible and more elastic, and PVC flexible glue is slightly firm, both of them can be adjusted, but PVC has no toughness.
PVC materials have common material and environmental material, they are known as ATBC and PVC, separately, while silica gel can be certified by ROHS which is very environmental and can even reach food grade.
Silica gel products are usually made to be transparent, and the burning odor is relatively small, but the PVC product will be blackened after fired and the smell is quite unpleasant.
Silica gel products are more heat-resistant and cold-resistant in PVC products, silicone products can be heated in the microwave while the PVC cannot.