How to choose liquid silicone?

There are various types of liquid silicone on the market, and the quality is also uneven. For beginners who have never used silicone, it is very important to choose the silicone that is suitable for their products. Below, we will start with several aspects and teach you how to choose liquid silicone.

Firstly, choose from the perspective of environmental requirements. Liquid silicone can be divided into condensed industrial grade liquid silicone and additive food grade liquid silicone. The main difference between industrial grade silicone and food grade silicone is their environmental performance. Industrial grade silicone is toxic, not environmentally friendly, and has an odor; Food grade silicone is non-toxic and odorless, so it depends on the customer's own environmental requirements to choose.

Secondly, starting from the size and size of the product, choose a silicone with appropriate hardness. The hardness of silicone varies from 0 degrees to 60 degrees, with a unit every 5 degrees in the middle. Products with dimensions below 20 centimeters should have a hardness of 10-20 degrees; For products with a size of around 20 to 50 centimeters, choose a hardness of around 30 degrees; The size should be over 1 meter, and the hardness should be around 40 degrees. In short, the selection should follow the rule of selecting the larger ones with higher hardness, and selecting the smaller ones with lower hardness.

Finally, it is the most important and direct method to determine which type of silicone to use based on the customer's usage. The production of resin handicrafts, gypsum handicrafts, and cement product molds usually uses industrial grade silicone molds with a temperature range of 20-30 degrees. Chocolate molds, cake molds, biscuit molds, and other food grade silicone molds are made using 5-20 degree food grade silicone. Adult products, silicone simulated prostheses, silicone masks, and other silicone props for simulating human bodies are made from 0 to 10 degree environmentally friendly silicone. Silicone molds with high temperature resistance and low shrinkage requirements are made of silicone with an additional 40 degree mold.