Henkel Ag & Company, Kgaa

Henkel IP Holding Gmbh

Jingfen Zhang

Rainer Schoenfeld

Thomas Bachon

Nigel Fay

Rainer Schönfeld

Haiping Wu

Qing Feng

The present invention relates to a method for reinforcing a vehicle subframe comprising one or more hollow sheet metal parts, comprising: determining at least one area on a hollow sheet metal part of a subframe with respect to specified conditions; preparing a reinforcement part which is insertable into the hollow sheet metal part at the determined area, wherein the reinforcement part comprises: a carrier having at least one hollow chamber; and a pre-foam of a foam material, which is able to expand after being heated, the pre-foam being isolated from the at least one hollow chamber and distributed at least partly on the periphery of the carrier; and installing the reinforcement part within the hollow sheet metal part at the determined area and heating the pre-foam such that it expands. The present invention also relates to a vehicle subframe reinforced by said method.

Method for reinforcing a subframe

The present invention provides a two-part mechano-responsive composition, comprising: Part I: a tetra-glycidyl amine multifunctional epoxy resin represented by the general formula (I); and Part II: a polythiol and an amine. The cured composition has a mechano-responsive property without adding any dyes or luminescence agents, and by subjected to mechanical stimuli, the cured composition changes its color, and the color is in the visible spectrum range, which can be easily checked with naked eyes; and the color change is reversible.

Mechano-responsive composition

The present invention provides a gel time controllable epoxy adhesive, which includes a first part comprising an epoxy resin containing two or more epoxy groups in one molecule, and a second part comprising a thiol curing agent, wherein a peroxide is comprised in part A, part B and/or a third separate part C.

Gel time controllable two part epoxy adhesive

Growing community of inventors

Shanghai, China

Jingfen Zhang