Surface-modified fibers, reinforcing fibers, and molded article using same
AssigneeKuraray Co., Ltd.
InventorsEiichi Ishida, Daisuke Koda, Toru Asada, Shinichi Takemoto, Shuhei Yorimitsu, Hiroyuki Kawai
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Abstract
To provide surface-modified fibers and reinforcing fibers that are capable of enhancing the adhesiveness to rubber, without the use of resorcinol and formaldehyde, and a molded article using the same. Surface-modified fibers include fibers, and a surface-modifying layer covering at least a part of a surface of the fibers, and have a solid surface zeta potential on a surface of the surface-modifying layer of −20.0 to 30.0 mV.
Claims12
Reinforcing fibers, comprising:
- surface-modified fibers containing fibers and a surface-modifying layer that covers at least a part of a surface of the fibers and has a surface with a solid surface zeta potential of −20.0 to 30.0 mV, and
- an adhesive layer containing conjugated diene-based rubber that covers at least a part of a surface of the surface-modified fibers and has a number average molecular weight (Mn) of more than 2,000 and 120,000 or less.
A molded article, comprising fibers, a surface-modifying layer, an adhesive layer, and a rubber layer in this order,
- wherein an adhesion force between the adhesive layer and the rubber layer is 70 N or more per a width of 25.4 mm.
Dependencies are inferred from the claim text.