A kind of magnetic butyl damping composite material for vehicle and its preparation method

Abstract

The invention discloses a magnetic butyl damping composite material for automobiles and a preparation method of the magnetic butyl damping composite material. The composite material comprises following raw materials: 10%-15% of butyl rubber, 5%-20% of polyisobutylene, 5%-10% of petroleum resin, 5%-20% of filler, 30%-50% of a magnetic material, 2%-8% of processing oil and 1%-5% of carbon black. The raw materials are subjected to tight milling, mixing, extrusion and magnetization, and the magnetic butyl damping composite material coated with aluminum foil and used for the automobiles is prepared. The prepared magnetic butyl damping composite material for the automobiles can act on metal skin effectively for a long time, noise caused by vibration can be reduced very well in service cycles of the automobiles, and the composite material is more environment-friendly than a traditional magnetic petroleum asphalt damping mat.

Description

technical field [0001] The invention relates to a butyl damping composite material, in particular to a magnetic butyl damping composite material for vehicles and a preparation method thereof. Background technique [0002] During the driving process of the car, due to the work of the engine, the uneven road surface will cause vibration, and the vibration will be transmitted to the metal skin of the body through the frame. The metal skin will convert this vibration energy into noise, and the noise will make passengers feel uncomfortable. In terms of structure, the steel plate used for the metal skin is very thin, about 1mm. In order to reduce the noise caused by metal skin vibration, Chinese patent CN 201310258628.7 published on September 11, 2013 discloses a butyl rubber-based high-performance material, which contains butyl rubber, damping fillers, etc., which can effectively reduce vibration At the same time, the metal skin is thickened. This kind of material itself has sel...

AI Technical Summary

Problems solved by technology

In order to reduce the noise caused by metal skin vibration, Chinese patent CN 201310258628.7 published on September 11, 2013 discloses a butyl rubber-based high-performance material, which contains butyl rubber, damping fillers, etc., which can effectively reduce vibration At the same time, the metal skin is thickened. This kind of material itself has self-adhesiveness and can be effectively attached to the metal skin. However, due to the long service life of the car, the viscosity will decrease, and there will be butyl damping compound. Risk of material falling from the metal skin

The Chinese patent CN 03134927.7 disclosed on September 15, 2004 discloses a magnetic damping plate and its preparation method, which provides a prefabricated magnetic damping plate, which can easily achieve accurate and reliable thickness on the skin of a motor vehicle. Controlled and combined with a firm damping rubber layer, but because the raw material of this damping plate contains petroleum asphalt, it is harmful to the environment, so it also has certain defects