Buffering energy-absorbing material for filling automobile energy-absorbing box and preparation method of buffering energy-absorbing material

Abstract

The invention provides a buffer energy-absorbing material for filling an automobile energy-absorbing box. The buffer energy-absorbing material is prepared from the following raw materials in parts by weight: 100 parts of bisphenol A epoxy resin, 5-25 parts of fly ash hollow microspheres, 1-15 parts of paper pulp lignin fibers, 2-5 parts of a silane coupling agent, 10-50 parts of a curing agent, 1-3 parts of an accelerant, 10-35 parts of a diluent and 3-5 parts of a defoaming agent. The invention further discloses a preparation method of the buffering energy-absorbing material for filling the automobile energy-absorbing box. The buffer energy-absorbing material for filling the automobile energy-absorbing box has the advantages of light weight, good buffer energy-absorbing effect, low manufacturing cost, high and low temperature resistance and good stability, can be used for filling the automobile front-end energy-absorbing box, realizes a better energy-absorbing effect, reduces the weight, reduces the production and later maintenance cost, is simple in preparation method, and is suitable for industrial production. The raw materials are cheap, easy to obtain, environment-friendly and renewable, and the composite material is a novel composite material suitable for large-scale industrial production, has a wide application prospect and can be widely applied to vehicle energy absorption parts.

Description

technical field [0001] The invention relates to the field of epoxy resin-based composite materials, in particular to a buffer energy-absorbing material for filling an automobile energy-absorbing box and a preparation method thereof. Background technique [0002] The front-end energy-absorbing device of the automobile is the main bearer of the frontal collision protection of the vehicle body. It usually includes two parts, the anti-collision beam and the easily crushed longitudinal beam (ie, the energy-absorbing box), which are fixed on the vehicle chassis by bolting. When a frontal collision of a vehicle occurs, the anti-collision beam acts as the first contact in the process of impact load transfer, converts the concentrated load at the contact point into a uniform load through the rigid structure, and transfers the energy generated by the collision to the rear energy-absorbing box. At this time, under the action of this load, the energy-absorbing box undergoes plastic defo...

AI Technical Summary

Problems solved by technology

[0003] The traditional energy-absorbing box is mainly made of hot-rolled steel and aluminum, but because the metal material itself has poor impact energy absorption effect and high density, it does not meet the current requirements for lightweight body, and the manufacturing cost is high. High repair costs due to replacement of crash boxes in case of front-end impact