Environment-friendly aqueous black paste for wet synthetic leather and preparation method thereof

Abstract

The invention relates to the field of the synthetic leather, in particular to an environment-friendly aqueous black paste for wet synthetic leather and a preparation method thereof. The environment-friendly aqueous black paste for the wet synthetic leather consists of the following components in percentage by weight: 35 to 50 percent of carbon black, 3 to 15 percent of fatty alcohol polyoxyethylene ether, 0.5 to 2.5 percent of triethanolamine, 0.5 to 2.5 percent of diethylene glycol, 1 to 5 percent of water and oil soluble polyacrylate and the balance of water. The invention also discloses a method for preparing the aqueous black paste by using a sand mill, a three-roll machine and a ball mill. Besides the high color concentration and high compatibility with the wet paste, the color pasteof the invention makes the synthetic leather product meet the requirement of environmental protection; the aqueous black paste is an environment-friendly wet color paste which meets the requirements of the synthetic leather on the environmental protection; and due to the aquosity and the environment friendliness of the color paste, the paste has the safe production, storage and transport performance.

Description

technical field [0001] The invention relates to the field of synthetic leather, in particular to an environment-friendly water-based black slurry for wet-process synthetic leather and a preparation method thereof. Background technique [0002] Wet-process polyurethane synthetic leather is to add DMF solvent and other colorants, fillers, and additives to polyurethane wet-process resin to make a mixed solution. The solvent (DMF) has affinity, and the water that is incompatible with the polyurethane resin, the solvent (DMF) is replaced by water, and the polyurethane resin gradually solidifies, thus forming a porous film, that is, the microporous polyurethane grain layer, which is customarily called Bass (transliteration of English BASS), its meaning is the meaning of base material (semi-finished leather). Bass can only become finished polyurethane synthetic leather after dry veneer or surface finishing, such as surface printing, embossing, sanding and other processes. [0003...

AI Technical Summary

Problems solved by technology

Since the solvent is DMF, and the selection of dispersing aids generally does not go through environmental protection considerations, therefore, the traditional wet solvent-based color paste has great impact on the environmental protection of the final synthetic leather product, the storage stability of the color paste, and the safety of the color paste. Poor productivity and transportation