6 Important Factors Related to The Quality of Silicone Kitchen Utensils

To customize and produce a high-quality silicone kitchen utensils, you should understand the factors that have great important impacts on the quality of all silicone kitchen utensils. Here, we conclude 6 crucial factors related to the quality.

Hardness is a key factor that affects the quality of silicone kitchen utensils

Hardness refers to a material's ability to resist pressure from a hard object. Silicone rubber has a Shore hardness range of 10 to 80, which allows designers to select the appropriate hardness to achieve optimal performance. Different combinations of polymer substrates, fillers, and additives can produce intermediate levels of hardness. Heat curing time and temperature can also alter hardness levels without compromising other physical properties.

Factors affecting the quality of silicone kitchen utensils: tensile strength

Tensile strength refers to the amount of force required per unit range to tear a sample of silicone cookware material. For thermally vulcanized solid silicone rubber, the range of tensile strength is from 4.0 to 12.5 MPa, while for fluoro silicone rubber, it ranges from 8.7 to 12.1 MPa. On the other hand, liquid silicone rubber has a tensile strength range of 3.6 to 11.0 MPa.

Factors affecting the quality of silicone kitchen utensils: tear strength

This pertains to the ability of the material to resist expanding when cut or scored and force is applied. Even under extreme torsional stress, thermally vulcanized solid silicone rubber cannot be torn. Its tear strength ranges from 9 to 55 kN/m. Fluoro silicone rubber has a tear strength range of 17.5 to 46.4 kN/m, while liquid silicone rubber ranges from 11.5 to 52 kN/m.

Factors affecting the quality of silicone kitchen utensils: elongation

Elongation refers to the percent increase in length from the original size before the sample breaks, also known as "Ultimate Elongation at Break." Solid silicone rubber that is thermally vulcanized typically has an elongation range of 90 to 1120%. Meanwhile, fluoro silicone rubber has an elongation range of 159 to 699%, and liquid silicone rubber has an elongation range of 220 to 900%. The processing method and choice of hardener can significantly alter elongation. Temperature also plays a role in the elongation of silicone kitchenware.

Factors affecting the quality of silicone kitchen utensils: operation time

The operation time is calculated from when the colloid is added to the vulcanizing agent, and there is no clear boundary between this time and the vulcanization time. The vulcanization reaction begins as soon as the agent is added, but the 30-minute vulcanization process does not impact the final product's quality. Therefore, minimizing the operation time can be beneficial for the finished product.

Factors affecting the quality of silicone kitchenware: vulcanization time

Some places will say it is curing time. That is to say, after such a long time, the vulcanization reaction of silica gel is basically over. This basically means that the product is ready to use, but in fact there is still a small part of the curing reaction that has not ended. Therefore, products made of silicone rubber, such as heat-resistant silicone kitchen utensils, are usually put into use for a period of time.

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