About automobile rubber seal material performance requirements, as automobile rubber seal manufacturers, Yong yong to give you one by one analysis and explanation, and let you long knowledge.
First, what are the basic performance of the seal?
The basic performance of automotive rubber sealing strip includes hardness performance, tensile performance, strength performance, elongation at break and compression permanent deformation and other controllable sealing performance requirements. According to industry standards, the manufacturers of automotive seals should provide data on the status of supply of these properties and data after hot air aging. According to the state of use, the hot air aging test temperature is generally selected 70℃.
Two, ozone aging resistance and atmospheric aging resistance performance is what?
The automobile is in all-weather state for a long time, so the rubber seals are required to have good ozone aging resistance and atmospheric aging resistance.
1, ozone aging resistance: ozone aging, is sensitive to the characteristics of rubber ozone, the use of environmental simulation means to accelerate the process of rubber ozone aging, so as to test the aging resistance of rubber products.
2, the properties of materials under the action of hot air change with time.
Long-term exposure of polymer materials to outdoor conditions produces various changes, also known as atmospheric aging.
Three, what is the paint resistance?
Automobile rubber seals are directly installed on the body of the car, and the body paint plate direct contact, free from the paint will interact with the rubber seal, so as to accelerate the aging of the rubber seal, so paint resistance is one of the conventional properties of sealing materials.
Four, what are the standards for low temperature performance of seals?
Automotive seals in the use of temperature is generally -40℃ to 70℃, so it requires good low temperature resistance. Brittleness temperature index of sealing material.