Preparation method of waterborne bass with pressure change resistance and high resilience property

Abstract

The invention relates to a preparation method of a waterborne bass with pressure change resistance and high resilience property. The method comprises steps as follows: (1) preparation of slurry: 1) preparation of waterborne bass foaming slurry: 10-30 parts of tap water, 2-5 parts of a waterborne dispersant, 1-3 parts of a waterborne crosslinking agent, 3-6 parts of a waterborne stabilizer, 3-6 parts of a waterborne foaming agent, 2-5 parts of a medium-temperature microsphere foaming agent, 20-40 parts of filling powder and 1-2 parts of a thickener are sequentially added to 200-300 parts of waterborne polyurethane resin, the mixture is stirred and mechanically foamed, and the waterborne bass foaming slurry with uniform pores is prepared; 2) preparation of a curing liquid: 85-95 parts of tap water are added to 6-14 parts of a demulsifying curing agent and stirred uniformly, and the curing liquid is obtained; (2) preparation of the waterborne bass: the waterborne bass foaming slurry is uniformly applied to knitted or woven fabric and sequentially subjected to water washing and press drying after being solidified through the curing liquid and finally enters a five-zone stepped heating oven to be foamed and dried, and the waterborne bass is obtained. The waterborne bass is low in cost, safe, environment-friendly and high in pressure change resistance and air permeability.

Description

technical field [0001] The invention relates to the technical field of synthetic leather production, in particular to a method for preparing water-based bass with compression resistance and high resilience. Background technique [0002] Synthetic leather has the characteristics of soft and natural luster, soft hand feeling, strong leather feeling, flex resistance and anti-aging. It is the most ideal substitute for natural leather and is widely used in clothing, shoemaking, bags, furniture and other industries. However, compared with natural leather, synthetic leather products currently on the market have poorer compression and resilience performance, which leads to, for example, synthetic leather sofa seats in daily use, where they are in contact with people. Obvious dents, sinking and other deformation phenomena, although the deformed parts will recover slowly, but in the process of long-term use, the recoverability of the deformed parts will gradually decrease, resulting i...

AI Technical Summary

Problems solved by technology

However, compared with natural leather, synthetic leather products currently on the market have poorer compression and resilience performance, which leads to, for example, synthetic leather sofa seats in daily use, where they are in contact with people. Obvious dents, sinking and other deformation phenomena, although the deformed parts will recover slowly, but in the process of long-term use, the recoverability of the deformed parts will gradually decrease, resulting in permanent dents and sinking, which will affect the overall appearance of the sofa And the feeling of use, and the air permeability of the deformed part will be seriously reduced. When people sit in this part for a long time, the buttocks will have obvious damp feeling

In response to these shortcomings, the current common synthetic leather products are mainly improved by changing the properties of their formula slurry, but the effect is limited, and the cost will be significantly increased or the physical properties will be significantly reduced