+86-0574-88106851 sales@relong.cn
Relong Auto-parts Co.,ltd
Relong Auto-parts Banner

Performance Requirements for Automotive Rubber Components

Heat resistance

In order to ensure the durability of the product, one of the things that must be considered in the design of the damping rubber is the performance retention over time. The reason for the aging of the damping rubber over time comes from many aspects, but the main ones are aging phenomena such as hot oxygen, dynamic fatigue, and ozone. Among them, the influence of heat is one of the main factors in the change of the environment in which the rubber is used.

Automotive Rubber Components

To improve the heat resistance of natural rubber-based materials, the following methods are often used:

(1) Optimization of cross-linking morphology: for the damping rubber optimized for cross-linking morphology, for reasons of physical properties and processing properties, in most cases, cross-linking is carried out by using sulfur. In order to improve the heat resistance of the sulfur cross-linking system, it is necessary to select a vulcanization system in which the cross-linking form of the monosulfide system can be obtained. However, since the cross-linking form of the monosulfide system deteriorates the fatigue resistance of the vibration-damping rubber, how to combine heat resistance and fatigue resistance is important in improving the heat resistance of the natural rubber-based material. Most of the formulations use a semi-effective vulcanization system.

(2) Selection of anti-aging agent: Since the damping rubber is used under dynamic conditions, its aging (oxygen aging, ozone aging, and fatigue aging) is much more serious than static, and the various aging factors not only act alone but also exert a role on the rubber in various coupling forms. For example, mechanical influence factors (load, vibration conditions, etc.) often involve oxygen, ozone, and light in the atmosphere. In addition, heat (temperature) also participates in the action, which causes the rubber to be sticky (cut cross-linking) hardening (cross-linking progress) or cracks and cracks, so the use of the anti-aging agents and their cooperation are very important.

(3) Application of blended rubber, etc. It is a common method to mix about 30% of EPDM in natural rubber for the purpose of improving ozone. However, in improving the heat resistance of the vibration-damping rubber, mainly used are SIR and EPDM-based IIR.

Nishiue Takeshi et al. produced a shock absorber by using natural rubber, a butadiene rubber containing an unsaturated bond, and a metal salt containing a -OH group organic acid having a carbon number of more than 4, and some other additives. This kind of shock absorbers has good durability and compression set properties. The compression set at 22 °C for 22 hours and 40 °C for 148 hours was 17.0 and 11.7%, respectively. O kada Osamu got the vibration-damping rubber material by blending EPDM rubber and EAM rubber.

We are one of the biggest automotive rubber components manufacturers in China, welcome to visit our website for more details.
Related News
  • How To Solve The Eccentric Wear Phenomenon Of The Rubber Seal?

    How To Solve The Eccentric Wear Phenomenon Of The Rubber Seal?

    June 26, 2018When the seal is affected by eccentric load, large wear occurs at the location where the load gathers, while the rest parts have little or no wear. Wear that does not occur on the entire circle of the...view
  • Classification of Rubber Parts

    Classification of Rubber Parts

    August 6, 2018From the whole vehicle, in addition to tires and internal and external decorative rubber parts, rubber parts are required to be classified into three categories according to their types.1. HoseFor eng...view
  • Classification and Selection of Rubber Buffer Shock Absorbers

    Classification and Selection of Rubber Buffer Shock Absorbers

    August 6, 2018Rubber buffer shock absorbers are classified according to their function:1. Narrow sense rubber buffer shock absorbers that support various devices;2. Rubber bumpers for the purpose of absorbing impac...view
  • The Structure And Function Of Rubber Sealing Grommets

    The Structure And Function Of Rubber Sealing Grommets

    June 26, 2018What is a rubber grommet? What is a rubber sealing grommet? The grommet is used in a variety of specifications, and the shape affects the sealing effect, which is used to reduce friction, prevent leak...view
  • Automotive Rubber Components

    Automotive Rubber Components

    June 22, 2018With the continuous development of China's economy, the number of vehicles in our country has been able to compare with the number of houses. On average, three families have a car. When it comes to ca...view
  • Automotive Rubber Grommets Online

    Automotive Rubber Grommets Online

    September 3, 2018What are automotive rubber grommets online? Are they rubber seal grommets? The grommet has various specifications and shapes, which affect the sealing effect. It is used to reduce friction, prevent le...view
  • TEL:+86-0574-88106851
  • FAX:+86-0574-88106851
  • EMAIL:sales@relong.cn
  • ADDRESS:11/F, South Building, No. 1299, East Yinxian Avenue, Ningbo, China