What Is The Influencing Factors Of Silicone Products ?

December 26, 2022

1. Viscosity. Explanation of scientific and technological terms: the volume characteristics of liquid, quasi-liquid or quasi-solid substances against flow, that is, the internal friction or flow internal resistance between molecules when they flow under the action of external force. Usually viscosity and hardness are directly proportional.
Two, hardness. The ability of a material to locally resist pressing a hard object into its surface is called hardness. Silicone rubber has a hardness range of 10 to 80 Shore, which gives the designer full freedom to select the desired hardness to best achieve a specific function. Various intermediate hardness values can be achieved by mixing different ratios of polymer base, filler and additives. Likewise, heat curing time and temperature can also change the hardness without destroying other physical characteristics.
3. Tensile strength. Tensile strength is the force per unit of range required to cause a sample of rubber material to tear. The tensile strength range of heat vulcanized solid silicone rubber is between 4.0-12.5MPa. The tensile strength range of fluorosilicone rubber is between 8.7-12.1MPa. The tensile strength range of liquid silicone rubber is between 3.6-11.0MPa.
4. Tear strength. The resistance to the enlargement of a cut or nick when force is applied to a notched sample. Even if it is cut and placed under extremely high torsional stress, heat vulcanized solid silicone rubber will not be torn. The tear strength range of hot vulcanized solid silicone rubber is between 9-55 kN/m. The tear strength of fluorosilicone rubber ranges from 17.5-46.4 kN/m. Liquid silicone rubber tear strength ranges between 11.5-52 kN/m.
Five, elongation. Usually refers to "Ultimate Elongation at Break" or the percentage increase from the original length when the specimen breaks. Thermally vulcanized solid silicone rubber generally has an elongation in the range of 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 selection of hardener can greatly change its elongation. The elongation of silicone rubber has a great relationship with temperature. Intelligent Pvc Oven
6. Operating time. The operating time is calculated from the moment when the colloid is added to the vulcanizing agent. There is actually no complete limit between this operation time and the later vulcanization time. The colloid has already undergone vulcanization reaction from the moment the vulcanizing agent is added. This operation time means that the 30-minute vulcanization reaction of the product can not affect the quality of the finished product. Therefore, the more time saved in the product operation process, the more beneficial it is to the finished product. Hydraulic Machine

7. Vulcanization time. Some places say it is curing time. That is to say, after such a long time, the vulcanization reaction of silica gel is basically over. This is basically over, which means that the product is already available, but in fact there is still a small part of the curing reaction that has not been completed. Therefore, products made of silicone rubber, such as silicone molds, usually have to be placed for a period of time before being put into use.

Jinyu Precision Machinery Factory is located in Dongguan City, Guangdong Province, mainly engaged in the research and development, production and sales of silicone equipment, PVC equipment, KPU equipment, and special equipment for silicone rubber. Silicone Machines / PVC Machines.

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Ms. Bear

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