초록

Composites are disclosed of discontinuous cellulose fibers mixed with a methylol phenolic modified polyolefin and a bonding agent. Treated fibers are also disclosed, which are treated to reduce fiber-to-fiber interaction so as to facilitate mixing into composites.

대표청구항 ▼

A composite consisting essentially of from 2 to 55 weight percent of discontinuous cellulose fibers, the remaining from 98 to 45 weight percent being a matrix comprising from 2 to 99.9 parts by weight of a crystalline polymer from alpha olefin monomer having 2 to 4 carbon atoms, said polymer having

A composite consisting essentially of from 2 to 55 weight percent of discontinuous cellulose fibers, the remaining from 98 to 45 weight percent being a matrix comprising from 2 to 99.9 parts by weight of a crystalline polymer from alpha olefin monomer having 2 to 4 carbon atoms, said polymer having methylol phenolic groups grafted thereto, and at least 0.1 part by weight of a bonding agent per 100 parts of matrix by weight. Treated fibers comprising discontinuous cellulose fibers of aspect ratio greater than five and crystalline polymer from alpha olefin monomer having 2 to 4 carbon atoms, said polymer having methylol phenolic groups grafted thereto, and said polymer being present in an amount sufficient to reduce fiber-to-fiber affinity up to about 85 parts by weight per 100 parts of fibers by weight.