Everyone knows about shock absorbers, so what is cushioning glue? Cushion rubber is a kind of rubber products with high elasticity and high toughness, which belongs to automobile modification accessories. Used to install at the coil spring of the car suspension system, it mainly plays the role of cushioning shock absorber and protects the shock absorber. Next, let's take a look at the car shock absorber with the electric state editor to see if the car shock absorber is useful.

Is car shock absorbing glue useful-the principle of car shock absorbing glue

The characteristics of rubber are both high elasticity and high viscosity. The elasticity of rubber is caused by the changes in the conformation of its curled molecules. The interaction between rubber molecules will hinder the movement of molecular chains, and exhibits viscous characteristics, resulting in stress. And strain is often in an unbalanced state. The curly long-chain molecular structure of rubber and the weaker secondary forces between the molecules make the rubber material exhibit unique viscoelastic properties, and thus have good shock absorption, sound insulation and cushioning properties. Rubber parts are widely used to isolate shocks and absorb shocks because they have the characteristics of hysteresis, damping and large reversible deformation.

The hysteresis and internal friction characteristics of rubber are usually expressed by a loss factor. The larger the loss factor, the more obvious the damping and heat generation of the rubber, and the more obvious the shock absorption effect. The size of the loss factor of the rubber material is not only related to the structure of the rubber itself, but also related to temperature and frequency. At room temperature, the loss factor of natural rubber (NR) and butadiene rubber (BR) is small, styrene butadiene rubber (SBR), neoprene rubber (CR), ethylene propylene rubber (EPR), polyurethane rubber (PU) and silicone rubber The loss factor of butyl rubber (HR) and nitrile rubber (NBR) is the largest.

Rubber materials used for shock absorption purposes are generally divided into 5 types, namely NR, SBR, BR are common rubber materials; NBR is used for oil-resistant vulcanized rubber; CR is used for weather-resistant vulcanized rubber; IIR is used for high-damping vulcanized rubber; EPR is used for Heat-resistant vulcanizate. Although NR has a small loss factor, it has the best overall performance, excellent elasticity, good fatigue resistance, low heat generation, small creep, good adhesion to metal parts, cold resistance, electrical insulation and processing properties. Therefore, NR is widely used for shock absorption purposes. When low temperature resistance or weather resistance is required, it can be used together or blended with BR or CR. The shock absorbers made by Nishiue and others using NR, BR and metal salts of organic acids containing -OH groups with carbon atoms greater than 4 have good durability. They can be compressed under the conditions of 70℃×22h and 40℃×148h The permanent deformation is 17.0% and 11.7% respectively.

Is the car shock absorber useful?-How to install the bumper block of the car shock absorber

⒈ You must go to the 4S shop to install, park the car on a flat ground before installation, and prepare cushion rubber, jacks (if possible to mount the rack, it is more convenient), soapy water (also can be replaced by detergent diluted water);

⒉ Use a jack to lift up the body of the installation part (or the upper frame to lift the whole vehicle), and the spring is stretched to facilitate installation. It is enough to fully see the shock absorber spring, there is no need to raise it too high;

⒊ Spray soapy water to clean the spring (mainly to remove the sand stains on the surface of the spring), and spray some soapy water to lubricate the buffer rubber (sufficient lubrication will make it easier for the spring to enter and adjust the position). After installation, it is necessary to clean the soapy water thoroughly. Prevent automobile safety parts-damping springs from rusting and breaking, causing human injuries;

⒋ Install the cushion rubber in the middle part of the spring (please refer to the installation techniques introduced later),……, put down the car body after the wheels are installed, and confirm that the spring is inserted into the upper and lower grooves of the cushion rubber.

Installation skills and experience of automobile spring buffer glue:

The buffer rubber specifications are mainly directly related to the "spring spacing". Please be sure to note that the installed buffer rubber specifications are suitable for the corresponding springs. If the specifications do not match, please do not install them (if you are shopping online, it is recommended to measure the spring spacing before buying. That is the safest and most secure way).

The circumference of the cushion rubber may exceed the circumference of the spring (that is, the cushion rubber will overlap from end to end after installation). If there is overlap, the excess length must be cut off, otherwise there will be harms and no benefits! Pay attention to cutting both ends equally. For example, if there is an excess (overlap) 8 cm, cut 4 to 5 cm from the end to the end.

If the circumference of the spring is too large (the spring is not wrapped around the spring after the cushion is installed), please pay attention to whether it reaches two-thirds of the spring. If it is two-thirds enough, then there is no problem and will not affect the use effect; if it is less than two-thirds or less (this phenomenon is very rare), two cushion rubbers are required to be used in combination (only one spring can be wound at most) Circle, cannot overlap).

Regardless of the style of the spring as a whole (straight, conical, inverted, barrel), the cushion rubber must be installed in the middle of the spring to achieve the best effect. The outward or inward opening of the buffer glue does not affect the use effect, but the inward opening will be more beautiful.

When the car body is lifted up, the spring is in a stretched state, and the spring spacing during stretching cannot match the cushion rubber (so the car body should not be raised too high), try to let the spring into the cushion rubber slot or unilateral Into the slot. When lowering the car body slowly, check and pay attention that the spring is completely inserted into the upper and lower grooves of the cushion rubber.

After the cushioning glue is installed properly, it is recommended to use a nylon cable tie to tighten the cushioning rubber and the spring as a whole at the position of the cushioning glue hole (click to see what is a nylon cable tie). The advantage is to avoid loosening or misalignment during long-term use. When the car body is lifted later, the spring tension is not easy to leave the buffer rubber slot.

Is car shock absorbing glue useful-summary

In fact, the surface of this shock-absorbing rubber provides extra support for the spring, which increases the gap distance of the spring. The most direct effect of installing this shock-absorbing rubber is that the body's ground clearance will increase by about 1-2 cm. . As for whether the installation of shock absorber makes the suspension harder or softer, it must be analyzed from two aspects. For models with insufficient spring support, that is, the suspension is soft, this kind of shock absorber hinders the normal travel of the spring. The suspension will become hard, and for models with a relatively hard suspension, the damping rubber will increase the spring gap and increase the ground clearance, so it will become softer than the original car after installation. The theory is so, but from the feedback of the riders who have actually installed the shock absorber, the effect does not seem to be great. The only thing worthy of recognition is the increased height of the car by 1-2 cm, which improves the passability to a certain extent.

In addition to the effect, there is also whether such an installation will damage the vehicle. In fact, there is a point that I still agree with. If the effect is really so good and there is no damage, then why does the car not come with it when it leaves the factory? After all, it's not worth much. The elastic force is equal to the elasticity index multiplied by the deformation length. What I want to say here is that the suspension bearing capacity of a car is set by the manufacturer before, that is to say, the maximum load it must bear without lowering the car to a height that affects the exercise.

At the same time, this thing has a very bad effect on the damper oil seal, and the probability of damper oil leakage increases a lot. Another point is that the vehicle has been strictly tested before leaving the factory. The installation of shock-absorbing rubber will make the vehicle higher by 1-2 cm. Although the passing performance has improved, the vehicle itself has become higher and the suspension hardened, which is very easy. Affects the center of gravity of the vehicle and flatly increases the accident probability at high speeds.

The research and development of any product is a state where advantages and disadvantages coexist. As for the buffer rubber, it is also a kind of rubber products with high elasticity and toughness, and modified accessories. It can be used as a coil spring installed in a car suspension system. Its main function is to cushion the shock, which can protect the shock absorber to a certain extent. The content shared by the editor about whether the car shock absorber is useful will be goodbye to everyone now.