Material as the carrier of CMF design, essential, intelligent hardware, smart home appliances, automotive interior, 3C digital, medical equipment, non-mobile phone and other fields have a large number of applications of silica gel material. As a key material in the field of medical equipment, liquid silica gel has an unlimited prospect in the industry.

Liquid silica gel and solid silica gel are also widely used in the protective cases of smart phones. The coating of the hand plate model is also mostly achieved by the silica gel mold to achieve small batch replication, which solves the problem that small batch needs to invest a lot of money to open the injection mold and a lot of cost investment.

Liquid silica gel, as its name suggests, is a highly active adsorption material. It is an amorphous substance, and its chemical formula is mSiO2•nH2O. Insoluble in water and any solvent, non-toxic and tasteless, chemical stability, in addition to strong alkali, hydrofluoric acid and no reaction with any substance.

Liquid silica gel is relatively solid high temperature vulcanized silicone rubber, which is a liquid adhesive, has good fluidity, fast vulcanization, more safe and environmental protection. The application in the medical industry is very wide, relative to other industries, its requirements are also the most stringent. Liquid silica gel has excellent tear strength, resilience, yellowing resistance, thermal stability, heat aging resistance, mainly used for baby products, medical supplies and electronic products.

Characteristics of liquid silica gel:

1. Excellent transparency and tear resistance;

2. High resilience;

3. Anti-yellowing;

4. Thermal stability;

5. Good water resistance and air permeability;

6. Heat aging, weather resistance;

7. Moderate viscosity, easy to operate, high transparency.

Liquid silicone rubber can be used for trademarks, products, pacifiers, medical supplies, coating, impregnation and perfusion purposes.

The difference between liquid silicone and solid silicone is as follows:

A. Appearance distinction

1. Liquid silica gel: it is liquid before curing and has fluidity;

2. Solid silica gel: solid, no fluidity;

B. Application scenarios

1. Liquid silica gel: industrial supplies, daily necessities, medical industry and food supplies, can directly contact with human body and food;

2. Solid silica gel: generally used in intelligent hardware, 3C digital and non-mobile phone fields;

C. Environmental safety

1. Liquid silica gel: platinum sulfide, non-toxic and tasteless, belongs to the safe food grade material;

2. Solid silica gel: peroxic compound vulcanization, vulcanization agent or cover the smell of vulcanization agent, is an environmental protection material.

D. Mode of production:

1. Liquid silica gel: fully automated production; Short production cycle; Material without the front processing, more efficient, more labor-saving; Can be used for double color glue injection.

2. Solid silica gel: it needs batching, mixing, cutting, manual feeding and other processes, with relatively low efficiency.

In the whole application scenario of liquid silica gel and solid silica gel, silica gel mold is the mother of industry, the early specification design is crucial, according to the characteristics of liquid silica gel and application scenario to fusion design. Can not be separated from the application scenario, in the preliminary research needs to be thoughtful.

In particular, silica gel will take place at high temperature curing reaction. So the molds are all heating units that can go up to 160 degrees or more. Temperature and curing cycle, both production cycle. But in the embedded injection molding temperature depends on the degree of heat resistance of the embedded parts. Mold heating unit design is not too much special, basic and high temperature plastics, thermosetting plastics are roughly the same. The actual production will use the temperature measured on the surface of the mold as the basis for process adjustment.