Factors Affecting the Quality of Silica Gel Kitchenware

- Jul 01, 2020-

Silicone kitchenware is one of the most popular kitchenware. Silica gel kitchenware has the advantages of long service life, mildew proof, convenient cleaning, high and low temperature resistance, and automatic disinfection function. Compared with traditional kitchenware, it is more in line with people's demand for kitchenware products and brings more convenience to life. The factors influencing the quality of silica gel kitchenware are as follows.

1、 Viscosity.

Explanation of technical terms: the volume property of a liquid, quasi liquid or quasi solid substance against flow, i.e. the internal friction or flow resistance between molecules when flowing under the action of external forces. Generally, viscosity is proportional to hardness.

2、 Hardness.

The ability of a material to partially resist hard material pressing into its surface is called hardness. Silicone rubber has a shore hardness range of 10 to 80, which gives designers full freedom to choose the required hardness to best achieve specific functions. Various intermediate hardness values can be achieved by mixing polymer substrates, fillers and additives in different proportions. Similarly, the time and temperature of heat curing can also change the hardness without destroying other physical characteristics.

3、 Tensile strength.

The tensile strength is the force required in each range unit to cause a rubber material sample to tear. The tensile strength of hot vulcanized solid silicone rubber ranges from 4.0 MPa to 12.5 MPa. The tensile strength of fluorosilicone rubber ranges from 8.7 MPa to 12.1 MPa. The tensile strength of liquid silicone rubber ranges from 3.6 MPa to 11.0 MPa.

4、 Tear strength.

Resistance to the expansion of the notch or notch when applied to a specimen with a notch. The hot vulcanized solid silicone rubber can not be torn even under extremely high torsional stress after cutting. The tear strength of hot vulcanized solid silicone rubber ranges from 9 to 55 kn / m. The tear strength of fluorosilicone rubber ranges from 17.5 to 46.4 kn / m. The tear strength of liquid silicone rubber ranges from 11.5 to 52 kn / m.

5、 Elongation.

It is usually referred to as "ultimate elongation at break" or the percentage increase relative to the original length when the sample breaks. The elongation of hot vulcanized solid silicone rubber generally ranges from 90% to 1120%. The general elongation of fluorosilicone rubber is between 159 and 699%. The general elongation of liquid silicone rubber is between 220 and 900%. Different processing methods and hardener selection can greatly change the elongation. The elongation of silicone rubber has a great relationship with temperature.

6、 Operation time.

The operation time is calculated from the moment when the colloid is added with vulcanizing agent. In fact, there is no complete boundary between this operation time and the subsequent vulcanization time. The colloid has been vulcanized since the moment of adding the vulcanizing agent. This operation time means that the 30 minute curing reaction of the product can not affect the quality of the finished product. Therefore, the more time is saved in the process of product operation, the more favorable it is for the finished product.

7、 Curing time.

In some places, it's curing time. That is to say, after such a long time, the vulcanization reaction of silica gel is basically finished. This is basically over, which means that the product is available, but in fact, a small part of the curing reaction is not finished. Therefore, products made of silicone rubber, such as silicone mold, usually need to be put into use for a period of time.

Silica gel kitchenware is non-toxic and tasteless. It has the function of automatic disinfection, high temperature resistance, and convenient cleaning. It saves heart, effort and time. Fine structure, color diversity, you can choose your favorite color, is a family fashion kitchenware.