The present invention relates to a method for manufacturing an aerogel sheet and comprises: a step (a) of impregnating an acid solution into a fiber sheet to clean the fiber sheet by using the acid solution and impregnating a binder solution into the fiber sheet that is cleaned by using the acid solution to manufacture a pre-processed fiber sheet; a step (b) of impregnating a silica precursor into the pre-processed fiber sheet; and a step (c) of a gelling catalyst into the fiber sheet into which the silica precursor is impregnated to gelate the silica precursor.

The present invention relates to a method for manufacturing an aerogel sheet and comprises: a step (a) of impregnating an acid solution into a fiber sheet to clean the fiber sheet by using the acid solution and impregnating a binder solution into the fiber sheet that is cleaned by using the acid solution to manufacture a pre-processed fiber sheet; a step (b) of impregnating a silica precursor into the pre-processed fiber sheet; and a step (c) of a gelling catalyst into the fiber sheet into which the silica precursor is impregnated to gelate the silica precursor.

A surface treatment agent which is a water-repellent agent, includes (1) a fluorine-free block copolymer, and (2) a liquid medium which is an organic solvent, water, or a mixture of water and an organic solvent. The non-fluorinated block copolymer includes at least one block segment (A) which includes a repeating unit formed from one or more types of acrylic monomer having a long-chain hydrocarbon group containing 12-40 carbon atoms. The non-fluorinated block copolymer preferably contains a segment (B) constituted by at least one of: (B1) a block segment including a repeating unit, different from that of segment (A), that is formed from an acrylic monomer having a long-chain hydrocarbon group including 12-40 carbon atoms; (B2) a block segment including a repeating unit formed from an acrylic monomer not having a long-chain hydrocarbon group; and (B3) a random segment formed from at least two types of acrylic monomers.

A ventilation insert for textiles, with at least one layer, covered at least partially by an absorption material and having ventilation openings, the openings being at least partially closeable via a liquid by swelling of the absorption material, obtainable by: a) treating a layer having ventilation openings with a mixture, containing a wetting agent, initiator, polymerizable monomer or oligomers, and a cross-linking agent, as a preliminary stage for the absorption material; and b) polymerizing the monomer or oligomer to form the absorption material while forming a bonded connection between the absorption material and the layer. The ventilation insert has a relatively low thickness, a low weight per unit area, and high flexibility permanently and independently of moisture after economical production, via one layer, self-sealingly closing ventilation openings, and containing the absorption material. The absorption material is connected to the layer by bonding, at least in some regions.

A ventilation insert for textiles, with at least one layer, covered at least partially by an absorption material and having ventilation openings, the openings being at least partially closeable via a liquid by swelling of the absorption material, obtainable by: a) treating a layer having ventilation openings with a mixture, containing a wetting agent, initiator, polymerizable monomer or oligomers, and a cross-linking agent, as a preliminary stage for the absorption material; and b) polymerizing the monomer or oligomer to form the absorption material while forming a bonded connection between the absorption material and the layer. The ventilation insert has a relatively low thickness, a low weight per unit area, and high flexibility permanently and independently of moisture after economical production, via one layer, self-sealingly closing ventilation openings, and containing the absorption material. The absorption material is connected to the layer by bonding, at least in some regions.

Use for sizing textile materials with an aqueous sizing composition including at least one co-polymer obtained by the polymerization of at least one non-ionic monomer and/or one anionic monomer, and at least one monomer of formula (I): ##STR00001##
in which: R.sub.1 is an atom of hydrogen or a methyl radical; x=0 or 1; Z is a divalent grouping C(O)O, C(O)NH, or CH.sub.2; n is an integer between 1 and 250; R.sub.2 is a hydrogen atom or a carbonated radicalsaturated or unsaturated, possibly aromatic, linear, ramified or cyclicincluding from 1 to 30 carbon atoms and from 0 to 4 hetero-atoms chosen from the group including O, N and S.

Use for sizing textile materials with an aqueous sizing composition including at least one co-polymer obtained by the polymerization of at least one non-ionic monomer and/or one anionic monomer, and at least one monomer of formula (I): ##STR00001##
in which: R.sub.1 is an atom of hydrogen or a methyl radical; x=0 or 1; Z is a divalent grouping C(O)O, C(O)NH, or CH.sub.2; n is an integer between 1 and 250; R.sub.2 is a hydrogen atom or a carbonated radicalsaturated or unsaturated, possibly aromatic, linear, ramified or cyclicincluding from 1 to 30 carbon atoms and from 0 to 4 hetero-atoms chosen from the group including O, N and S.

The present invention relates to a method for manufacturing an aerogel sheet and comprises: a step (a) of impregnating an acid solution into a fiber sheet to clean the fiber sheet by using the acid solution and impregnating a binder solution into the fiber sheet that is cleaned by using the acid solution to manufacture a pre-processed fiber sheet; a step (b) of impregnating a silica precursor into the pre-processed fiber sheet; and a step (c) of a gelling catalyst into the fiber sheet into which the silica precursor is impregnated to gelate the silica precursor.

The present invention relates to a method for manufacturing an aerogel sheet and comprises: a step (a) of impregnating an acid solution into a fiber sheet to clean the fiber sheet by using the acid solution and impregnating a binder solution into the fiber sheet that is cleaned by using the acid solution to manufacture a pre-processed fiber sheet; a step (b) of impregnating a silica precursor into the pre-processed fiber sheet; and a step (c) of a gelling catalyst into the fiber sheet into which the silica precursor is impregnated to gelate the silica precursor.

The present disclosure relates to a non-woven fabric made from a fiber coated with a binder polymer by spinning a non-woven forming fiber in an organic binder polymer compound solution, an electrochemical cell using the non-woven fabric as a separator substrate, and a method of making the non-woven fabric, and the non-woven fabric has a pore diameter in a range of 0.001 to 10 ?m, thereby providing a mechanical property required for a separator while ensuring a favorable movement of a lithium ion, and in the use of the non-woven fabric as a separator of an electrochemical cell, eliminating a need for a process of applying a separate adhesive layer, resulting in an effect of simplifying a separator manufacturing process.