What are the main factors influencing the silica gel products kitchen utensils?
Silicone kitchen utensils and appliances, as a kind of household cooking class life appliance, its security is very important, in the choose and buy when we must to find regular vendors to buy, need to have food grade environmental protection product certification test report, or the FDA, LFGB certification test report of raw material, in the choose and buy when we should also pay attention to choose suitable for their own use of kitchen utensils and appliances, to distinguish between the use of a single kitchen utensils and appliances, before buying must be to see whether the quality of the silica gel products belong to the qualified material, can use the nose to smell a smell the smell of the product, strict silicone kitchen utensils and appliances in a heated encounter cold should not have any smell, stretching back and forth a few times to see whether could not to rebound, and in addition to these methods can also be from the silica gel products factory production process and the performance of the raw materials to get to know!
Technology noun explanation: liquid to liquid or the volume of a solid material flow resistance characteristics, namely flow by external force, between the molecules of internal friction or flow resistance.
Normally is directly proportional to the viscosity and hardness.
Second, the hardness.
Local resistance material hard objects the ability referred to as the hardness of its surface.
Silicone rubber has 10 to 80 shaw hardness range, it gives full freedom to the designer to choose the required hardness, in order to best implement specific functionality.
Polymer base material, fillers and additives on different proportions of mixed can realize all kinds of middle hardness value.
Similarly, heat curing time and temperature can also change the hardness, without disrupting the other physical characteristics.
Third, the tensile strength.
Tensile strength refers to cause a piece of rubber sample torn on the scope of each unit of force required.
Hot with sulfur type solid organic silicone rubber tensile strength range between 4.
Between 5 mpa.
Fluorine and silicone rubber tensile strength range between 8.
Between 1 mpa.
The tensile strength of the liquid silicone rubber range between 3.
Between 0 mpa.
Fourth, tear strength.
In a sample with incision hinder the incision or Nick when you force on resistance.
Even when cut in high torsional stress, thermal curing temperature type solid silicone rubber can not torn.
Hot with sulfur type solid silicone rubber tear strength range between 9 -
55 between kN/m.
Scope of fluorine and silicone rubber tear strength between 17.
Between 4 kN/m.
Scope of liquid silicone rubber tear strength between 11.
52 between kN/m.
Five, the elongation.
, often referred to as the 'limit rupture elongation' or when the sample fracture relative to the length of the original growth by percentage.
Hot with sulfur type solid silicone rubber elongation range between 90 to 1120%.
Fluorine and silicone rubber elongation between 159 to 699%.
Liquid silicone rubber elongation between 220 to 900%.
Different processing methods and the selection of curing agent can greatly change the elongation.
Silicone rubber elongation and temperature has a great relationship.
Six, operating time.
Operating time from gel to join the moment calculation of vulcanizing agent.
Behind the operation time and the boundaries of the curing time is not fully, the colloid from join the vulcanizing agent that moment start already for curing reaction, the operating time is the product of 30 minutes vulcanization reaction can not affect the quality of the finished product.
So the more products in the process of operation, the better to save time to finished product.
In some places would say curing time.
That is to say, after such a long time largely ended with the vulcanization reaction of silica gel.
This basically end product that is already available, but in fact there is a small part of the curing reaction is not over yet.
So the use of silicone rubber products, such as silicone mold usually put into use for a period of time again.
Xiamen silicone products manufacturer -
Silica gel products co. , LTD. (