Abrégé

A formaldehyde-removing and moldproof coating for filter materials, consisting of the following components in parts by weight: 50-65 parts of water; 10-15 parts of pseudo boehmite; 10-15 parts of zeolite powder; a thickening agent consisting of 0.2-0.4 part of carboxymethyl cellulose sodium; 5-8 parts of a self-crosslinking acrylic emulsion; 4-7 parts of an amine-based formaldehyde removing agent; 3-5 parts of activated carbon or 5-7 parts of an aqueous pigment paste; and 0.5-0.7 part of an antibacterial agent. The coating is prepared by stirring and mixing the components in a certain sequence until uniform. The prepared coating is sprayed onto an air filter material or applied to an air filter material through dip-coating and then the filter material is dried at 80-110℃, so that a common filter material can have the formaldehyde removing effect.

Classes IPC  ?

• C09D 133/00 - Compositions de revêtement à base d'homopolymères ou de copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un seul radical carboxyle, ou ses sels, anhydrides, esters, amides, imides ou nitrilesCompositions de revêtement à base de dérivés de tels polymères
• C09D 5/14 - Peintures contenant des biocides, p. ex. fongicides, insecticides ou pesticides
• C09D 7/12 - Autres adjuvants

Abrégé

Disclosed is a high-mechanical-strength activated carbon filter paper. The activated carbon filter paper is made of a sulphite softwood pulp, PET fibrids, a PE/PET sheath-core composite chopped fiber, and an internal sizing agent, wherein the internal sizing agent is chitosan fiber. A method for producing the activated carbon filter paper comprises (1) preparation of sulphite softwood pulp: a sulphite softwood pulp is conventionally beaten with a beating consistency of 5-7%, a crushing time of 30-60 min, and a beating degree of 40-50° SR; (2) preparation of PET pulp: a PET pulp is beaten with a beating consistency of 1-5%, a crushing time of 10-30 min, and a beating degree of 20-40° SR; and (3) mixing and stirring: activated carbon powder is mixed and stirred uniformly with the sulphite softwood pulp, PET fibrids, a PE/PET sheath-core composite chopped fiber, and a chitosan fiber, followed by blending on a paper machine with a slurry concentration on a net of 0.1-0.3%.

Classes IPC  ?

• D21H 27/08 - Papier filtre
• D21H 11/06 - Pâte au sulfite ou au bisulfite
• D21H 13/24 - Polyesters
• D21H 21/16 - Agents de collage ou hydrophobes