Method for preparing PVC leatheroid and PU synthetic leather with high efficiency release of negative ions

Abstract

The preparation process of artificial PVC leather and synthetic PU leather to release negative ion effectively includes the following steps: treating tourmaline mineral through sorting, water selecting, eliminating impurity, airflow grinding, acid or alkali treating; mechanical and chemical compounding tourmaline powder with RE salt or oxide and nanometer semiconductor material to obtain nanometer composite tourmaline material; adding the nanometer composite tourmaline material in 1.5-20 wt% into the material for artificial PVC leather and synthetic PU leather; and conventional artificial leather preparing process. The present invention added the negative ion releasing function to artificial PVC leather and synthetic PU leather, and negative ion with powerful oxidizing property is utilized to destroy bacteria's activity and to deodorize through reaction with various bad smell, such as ammonia, benzene, formaldehyde, etc.

Description

technical field

[0001] The invention relates to a preparation method of PVC artificial leather and PU synthetic leather, in particular to a preparation method of PVC artificial leather and PU synthetic leather capable of efficiently releasing negative ions. Background technique

[0002] In physics, charged atoms and atomic groups (including molecules) are called ions. Negative ions are charged atoms and atomic groups (including molecules). In 1902, the scientific community had identified the biological significance of air ions. In 1938, there was a treatise on "The Practice of Air Ions" in Japan. In 1980, the German medical community took the lead in proving that people in places with more positive ions had a higher rate of various diseases and more traffic accidents. Where the "landscape" is good, there are many negative ions, the air is obviously fresh, and the incidence rate is low. The main effect of "negative ions" on the human body is calming, ...