What is the tensile strength of silicone products?

Silicone products, with its excellent high and low temperature resistance, waterproof, flame retardant, wear resistance, oil resistance and other excellent characteristics, widely used in all aspects of our lives, from kitchen supplies to electronic products, from medical equipment to auto parts, silicone products everywhere. However, behind these applications, the tensile strength of silicone products is a frequently mentioned but not fully known performance indicator.

Tensile strength, as an important performance index of silicone products, refers to the force required on each range unit to cause a sample of silicone material to tear. It reflects the ability of silicone material to resist damage when stretched by external forces. In practical applications, the tensile strength of silicone products directly affects the service life, safety and reliability of the products. For example, in the medical field, silicone catheters need to withstand a certain amount of pressure without breaking, which requires it to have a high tensile strength; In auto parts, silicone seals need to have good elasticity and toughness to cope with a variety of complex environmental conditions, which is also closely related to its tensile strength.

The tensile strength of silica gel products is affected by many factors, including the type of silica gel, formula, production process and test conditions. First of all, the type of silica gel has a direct impact on the tensile strength. Common types of silicone include hot sulfurized solid organic silicone rubber, fluorosilicone rubber and liquid silicone rubber. These different kinds of silica gel have significant differences in tensile strength. For example, the tensile strength range of hot sulfurized solid organic silicone rubber is usually between 4.0-12.5MPa, while the tensile strength range of fluorosilicone rubber is between 8.7-12.1MPa. The tensile strength of liquid silicone rubber is relatively low, generally between 3.6-11.0MPa.

Secondly, the formula of silica gel also has an important impact on tensile strength. The type and amount of ingredients such as filler, vulcanizing agent and plasticizer in the formula will affect the tensile strength of silica gel. For example, the addition of filler can increase the hardness and strength of the silica gel, but too much filler may also cause the tensile strength of the silica gel to decrease. The selection and dosage of vulcanizing agent directly affect the degree of vulcanization and crosslinking density of silica gel, thus affecting its tensile strength. The addition of plasticizer can improve the flexibility of silica gel, but too much plasticizer will also reduce its tensile strength.

The production process also has an important influence on the tensile strength of silica gel products. In the production process of silicone products, molding, vulcanization, stripping and other process steps will affect the tensile strength of the product. For example, the pressure and temperature control during molding, the choice of vulcanization time and temperature, and the mode of release will affect the internal structure and performance of silicone products, thus affecting its tensile strength.

Test conditions are also one of the important factors affecting the tensile strength of silicone products. When testing the tensile strength of silicone products, it is necessary to follow the prescribed test methods and standards. Different test methods and standards may lead to differences in test results. Therefore, when comparing the tensile strength of different silicone products, it is necessary to ensure the consistency of the test conditions and test methods.

In addition to the above factors, the tensile strength of silicone products may also be affected by other factors, such as environmental factors (such as temperature, humidity, etc.), use time and use mode. At high or low temperatures, the tensile strength of silicone products may change. Prolonged use or improper use may also lead to a decrease in the tensile strength of silicone products.

In practical applications, understanding the tensile strength of silica gel products is of great significance for selecting suitable silica gel materials, designing reasonable product structure and ensuring product quality and safety. For example, in the medical field, it is necessary to choose silicone materials with high tensile strength to make medical devices such as catheters to ensure that they will not break or leak during use; In the field of electronics, it is necessary to select silicone materials with appropriate tensile strength to make electronic accessories such as seals and shock absorbers to ensure that they have good sealing and shock absorption performance.

In order to improve the tensile strength of silicone products, a variety of measures can be taken. For example, by optimizing the formula of silica gel, selecting the appropriate type and amount of ingredients such as filler, vulcanizer and plasticizer; Improve the production process, optimize the parameters and control conditions of molding, vulcanization, demoulding and other process steps; And strengthen the quality control and testing means to ensure that the tensile strength of silicone products meet the design requirements.

The tensile strength of silicone products is a complex and important performance index. It is affected by many factors, including the type of silica gel, formula, production process and test conditions.