LIQUID (METH)ACRYLIC SYRUP FOR IMPREGNATING A FIBROUS SUBSTRATE AND METHOD FOR THE PRODUCTION THEREOF, METHOD FOR IMPREGNATING A FIBROUS SUBSTRATE, AND COMPOSITE MATERIAL PRODUCED AFTER POLYMERISATION OF SAID PRE-IMPREGNATED SUBSTRATE

摘要

The invention relates to a liquid (meth)acrylic syrup for impregnating a fibrous substrate. The invention especially relates to a viscous liquid syrup mainly containing methacrylic or acrylic components. The invention also relates to a method for producing such a syrup. The invention relates further to a process for impregnating a fibrous substrate or long fibers with said viscous liquid syrup. The invention also relates to a fibrous substrate preimpregnated with said syrup, which is useful for the production of mechanical or structured parts or products. The invention also relates to a production method for producing mechanical or structured parts or items and to three-dimensional mechanical or structured parts produced by said method. The invention applies to the production of mechanical parts or structural elements made of impact-resistant thermoplastic composite material.

主权项

1. A liquid (meth)acrylic syrup for impregnating a fibrous substrate, said fibrous substrate consisting of long fibers, said syrup comprising:
a) a (meth)acrylic polymer, b) a (meth)acrylic monomer, c) elastomeric domains consisting of macromolecular blocks of flexible nature, with a glass transition temperature of less than 0° C., and which are soluble in the (meth)acrylic monomer, said liquid (meth)acrylic syrup having a dynamic viscosity of between 10 mPa·s and 10 000 mPa·s.