Fibersizing with small amounts of nanomaterials
AssigneeEvonik Degussa GmbH
InventorsStephan Sprenger, Matthias Naumann
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Abstract
Nanoparticle-coated fibre material, the coating of which includes between 0.01 and less than 2.0 wt % of nanoparticles based on the dry weight of the coated fibre material and is capable of undergoing further reactions, a process for producing the nanoparticle-coated fibre materials, and also corresponding fibre composite materials.
Claims12
A nanoparticle-coated fibre material, comprising a fibre material and a coating on at least a portion of the fibre material, wherein:
- the coating comprises from 0.01 wt % to less than 0.4 wt % of nanoparticles based on a dry weight of the nanoparticle-coated fibre material;
- the coating is capable of undergoing further reactions;
- and
- the nanoparticles comprise surface-modified spherical silica nanoparticles.
A process for producing a nanoparticle-coated fibre material, the process comprising:
- contacting a fibre material with an aqueous emulsion comprising a film-former by dipping, spraying or bathing the fibre material with the aqueous emulsion, to obtain a coated fibre material;
- and then
- drying the coated fibre material, to obtain a nanoparticle-coated fibre material, wherein:
- the aqueous emulsion further comprises surface-modified spherical silica nanoparticles;
- and
- the coating of the nanoparticle-coated fibre material comprises from 0.01 wt % to less than 0.4 wt % of nanoparticles based on a dry weight of the coated fibre material.
A process for producing a nanoparticle-coated fibre material, the process comprising:
- contacting a fibre material with an aqueous emulsion comprising a film-former, to obtain a coated fibre material;
- and then
- drying the coated fibre material, to obtain a nanoparticle-coated fibre material,
- wherein:
- the aqueous emulsion further comprises surface-modified spherical silica nanoparticles;
- the coating of the nanoparticle-coated fibre material comprises from 0.01 wt % to less than 0.4 wt % of nanoparticles based on a dry weight of the coated fibre material;
- and
- the contacting occurs by applying the aqueous emulsion to the fibre material with a rotating applicator roll, such that the contacting does not occur by directly dipping the fibre material into a bath of the aqueous emulsion.
Dependencies are inferred from the claim text.