How to choose liquid silicone
There are various types of liquid silicone on the market, and the quality varies. 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 from 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 silicone and additive food grade 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 customers choose based on their own environmental requirements.
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. Products with dimensions below 20 centimeters should have a hardness of 10-20 degrees; For products with dimensions 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, choose the one with higher hardness based on the larger size, and choose the one with lower hardness based on the smaller size.
After , it is important and direct for  to determine which type of silicone to use based on the customer's needs. The production of resin crafts, gypsum crafts, 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 prosthetics, silicone masks, and other silicone props for simulating human bodies are made using environmentally friendly silicone from 0 to 10 degrees Celsius. Silicone molds with high temperature resistance and low shrinkage requirements use silicone molds with an addition molding temperature of 40 degrees.