Solvent-free matt polyurea coating and kit of parts for producing the coating

A solvent-free matt polyurea coating, which is obtained by carrying out a reaction through at least following components:

• a) a polyisocyanate prepolymer;
• b) a polyether amine;
• c) a main chain extender, wherein
• the coating further comprises ground carbon fibers as a matting agent, the carbon fibers have an average fiber length greater than or equal to 50 μm and less than or equal to 150 μm, a weight fraction greater than or equal to 4.5% and less than or equal to 25%;
• the main chain extender is selected from one or a combination of two or more of diethyltoluenediamine, 4,4-methylene bis(N-sec-butyl-cyclohexylamine), 4,4-diaminodiphenylmethane, 4,4-diaminodicyclohexylmethane, 3-[[3-[[(2-cyanoethyl)amino]methyl-3,5,5-trimethylcyclohexyl]amino]propionitrile and 1,3-cyclohexyldimethylamine.