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WHAT ARE THE FACTORS THAT AFFECT SILICONE KITCHEN UTENSILS

Silicone kitchen utensils as a kind of household cooking utensils, its safety is very important, we must find a formal manufacturer to buy, need to have the product's food-grade environmental certification test report, or raw materials FDA, LFGB certification test report, such as China flatware supplier Infull Cutlery. We should also pay attention to the peach selection of suitable for their own use of kitchenware, to correctly distinguish the use of individual kitchenware, before buying must be aware of the quality of silicone products are qualified materials, you can use your nose to smell the smell of the product, strict silicone kitchenware should not have any odor when exposed to heat and cold, stretch back and forth several times to see if it can be enough to rebound, and in addition to these ways can also be from the silicone products manufacturers to The performance of silicone products and raw materials can be understood!

 

1、Viscosity

Explanation of scientific and technical terms:Liquid, proposed liquid or proposed solid material resistance to the volume characteristics of flow, that is, by the action of external forces and flow. The internal friction or flow resistance presented between molecules. Usually viscosity and hardness is proportional.

 

2、Hardness

Material local resistance to hard objects pressed into the surface of the ability called hardness. Silicone rubber has a Shore hardness range of 10 to 80, which gives the designer full freedom to select the desired hardness to best achieve a specific function. A variety of intermediate hardness values can be achieved by mixing different ratios of polymer base materials, fillers and additives. Likewise, the time and temperature of heating and curing can also change the hardness without destroying other physical characteristics.

 

3、Tensile strength.

Tensile strength is the force required to cause a sample of rubber material to tear per range unit. Heat-sulfurized solid silicone rubber tensile strength range between 40-125MPa. Fluorosilicone rubber tensile strength ranges from 87-121 MPa. The tensile strength range of liquid silicone rubber is between 36-110MPa.

 

4、Tear strength

The resistance that prevents the expansion of a cut or indentation when force is applied to a sample with a cut. Even after the cut is placed under extremely high torsional stress, the hot sulfur-added solid silicone rubber can not be torn. The tear strength of thermosulfurized solid silicone rubber ranges from 9 to 55 kN/m, and the tear strength of fluorosilicone rubber ranges from 175 to 464 kN/m. Liquid silicone rubber tear strength range between 115-52kN/m.

 

5、Elongation.

Usually refers to the "ultimate rupture elongation" or the percentage increase relative to the original length when the sample is broken. The general elongation of thermosulfurized solid silicone rubber ranges from 90 to 1120%. Fluorosilicone rubber elongation typically ranges from 159 to 699%. Liquid silicone rubbers typically have elongations between 220 and 900%. The elongation can be greatly altered by different addition methods and the choice of hardener. Build rubber elongation and temperature has a great relationship.

 

6、Operating time.

The operation time is calculated from the moment the vulcanizing agent is added to the rubber. This operation time and the vulcanization time behind that in fact there is no complete boundary, the rubber from the moment of adding vulcanizing agent has been vulcanized reaction, this operation time is to say that the product 30 minutes of vulcanization reaction can not affect the quality of the finished product. So the more the product operation process is to save time the more beneficial to the finished product. Some places will say that it is the curing time. This means that after such a long time, the vulcanization reaction of silicone is basically over. This basically means that the product is ready for use, but in fact there is still a very small part of the curing reaction has not yet finished. So products made with silicone rubber, such as silicone molds, usually have to be left for a while before they are put into use.


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