Environmental-friendly and water-pressure-resistant tent leather and preparation method thereof

Abstract

The invention discloses environmental-friendly and water-pressure-resistant tent leather and a preparation method thereof. The preparation method comprises the following steps: adding preparations such as a water-based thickening agent, a defoaming agent, a leveling agent and a curing agent into water-based polyurethane resin, and carrying out mixing and vacuum defoaming to form a water-based polyurethane resin slurry surface layer, middle layer and binding bottom layer; and by a processing method with dry-process film transferring, firstly coating release paper with the surface layer, then coating the release paper with the middle layer and the binding bottom layer after drying and cooling, drying till the release paper is in a half-dry state, then attaching base cloth, drying, curing, cooling, stripping the release paper, bundling, and carrying out surface after-treatment, thus obtaining the environmental-friendly and water-pressure-resistant tent leather. The environmental-friendly and water-pressure-resistant tent leather disclosed by the invention has the advantages that the problems of environmental pollution and residue of organic solvents for preparing traditional tent synthetic leather are solved, and the water-pressure resistance, the yellowing resistance, the waterproof effect, the breathable function and the like of the tent leather are improved.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather production technology, and in particular relates to an environment-friendly water pressure-resistant tent leather and a preparation method thereof. Background technique [0002] Tent refers to a shed that is propped on the ground to shelter from wind, rain, sunlight and for temporary living. It is generally used in advertising promotions, military, civilian, construction sites, outdoor travel, disaster relief, etc. When encountering rainy and snowy weather outdoors, tents are required to have sufficient waterproof and pressure resistance. The tent structure mainly includes inner and outer tents, tent poles, windproof ropes and ground nails. The outer tent is the protective layer of the tent. Generally, the tent outer tent is a coated nylon cloth. The thickness and texture of the coating determine the rainproof performance of the tent. The texture of the nylon cloth is expressed in the d...

AI Technical Summary

Problems solved by technology

However, since the tents currently on the market are all coated with solvent-based polyurethane slurry, a large amount of organic solvents such as dimethylformamide (DMF) and toluene need to be used in the preparation process, and these organic solvents will be included in the tent products. Residues, slowly volatilize over time, harmful to environmental pollution and human health

Moreover, solvent-based polyurethane coatings also have problems such as poor yellowing resistance, low water pressure resistance, poor waterproof effect, and poor air permeability.