Preparation method of easy-to-clean anti-fouling water-based automobile leather treating agent

Abstract

The invention relates to a preparation method of an easy-to-clean anti-pollution water-based automobile leather treatment agent. The preparation method comprises the following steps: preparing the following reaction raw materials in parts by weight for later use: 30-50 parts of waterborne polyurethane resin, 5-20 parts of self-extinction resin, 1-3 parts of a leveling agent, 1-5 parts of a wax emulsion, 1-5 parts of a hand feeling agent, 1-5 parts of silicon dioxide extinction powder, 1-3 parts of a thickener and 30-50 parts of deionized water; adding 30-50 parts of waterborne polyurethane resin and 5-20 parts of self-extinction resin into a reaction kettle, increasing the temperature to 60-90 DEG C at the rotating speed of 50-80 rpm, and performing heat preservation for 10-50 min; adding1-5 parts of silicon dioxide matting powder, increasing the rotating speed to 85-100 rpm, and performing stirring for 10-50 minutes; adding 1-3 parts of a leveling agent, 1-5 parts of a wax emulsion,1-5 parts of a feeling agent and 1-3 parts of a thickener, increasing the rotating speed to 105-120 rpm, and performing stirring for 10-50 min; and adding 30-50 parts of deionized water, performing stirring for 20-40 minutes, and performing cooling and discharging. The preparation process is simple, and the preparation process is stable.

Description

technical field [0001] The invention relates to a preparation method of an easy-to-clean and anti-pollution treatment agent for automobile leather. Background technique [0002] People need to apply a large amount of PVC artificial leather in daily life, and because a large amount of plasticizers and other materials are added in the production of PVC artificial leather, the produced PVC artificial leather is not ideal in terms of luster and hand feeling. In order to achieve a better and more ideal use effect, the leather surface must be treated during the leather production process to endow the leather surface with smooth, soft, matting, waterproof, anti-fouling and other comfortable feel and beautiful appearance. At present, the surface matting of polyvinyl chloride (PVC) artificial leather, especially PVC automotive leather, usually uses solvent-based surface treatment agents, which contain 85-90% organic solvents, and a large amount of organic solvents will be discharged ...

AI Technical Summary

Problems solved by technology

This requires that the matting agent for PVC automotive leather has excellent properties such as heat resistance, abrasion resistance, non-adhesion and color fastness to rubbing, but a single WPU not only has poor leveling and insufficient adhesion on the surface of PVC artificial leather , The surface color is unqualified for wet rubbing, and it is difficult to achieve a deep matting effect

In the preparation process, the reaction kettle is usually used as the reaction vessel, and the existing reaction kettle usually includes a kettle body with an inner cavity, a driving motor is arranged on the top of the kettle body, and a stirring shaft is connected to the output end of the driving motor. The end of the shaft away from the drive motor runs through the outer wall of the top of the kettle body and extends into the inner cavity. There is a feed inlet on the top side of the kettle body, a discharge pipe at the bottom of the kettle body, and a discharge valve on the discharge pipe. There is a stirring blade on the stirring shaft, and the raw material of negative ion antibacterial water-based polyurethane coating is added from the feed port during production. During the process, the stirring effect of the stirring blade is limited, and there is a problem of low stirring efficiency; and during the stirring process, a part of the raw material will be attached to the inner wall of the kettle body, resulting in the incomplete fusion of the raw materials, and the formation of dirt on the inner wall of the kettle body is difficult to clean; At the same time, the existing reactor will generate large vibration noise during the stirring process, which will affect the environment of the production site; the existing reactor temperature control structure is simple, and the temperature control effect is poor, which leads to the preparation of water-based automotive leather treatment agent The quality plummeted, and during the reaction process, after the internal pressure of the reactor rose to the upper limit, the internal pressure of the reactor could not be decompressed in time, and the production safety was low, so it needs to be improved

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