Method for reducing low-molecular weight volatile organic compounds in polymer material

Abstract

The invention discloses a method for reducing low-molecular weight volatile organic compounds in a polymer material. The polymer material or a product prepared by the polymer material is heated in hot air flow, and the temperature of the hot air flow can not be higher than the temperature of a melting point or a softening point of the polymer material. The way of using the hot air flow to heat is adopted, and the volatile organic compounds can be taken away along with the hot air flow, thereby continuously reducing the volatile organic compounds, further keeping the environmental pressure, and eliminating the need of controlling the pressure in a container; as the method does not depend on the heating container, the product can be conveniently heated for eliminating the volatile organic compounds, and the operation can be performed at all times and places. In addition, in the method, the heating temperature of the air flow is further limited to be not higher than the temperature of the melting point or the softening point of the polymer material, and the removing efficiency of the volatile organic compounds at the temperature is highest at the temperature. Therefore, the method has the characteristics of high heating efficiency, simple equipment, low cost, convenience in operation and the like.

Description

A method for reducing low-molecular organic volatiles in polymer materials technical field The invention relates to a technology for reducing organic volatiles in polymer materials. Background technique With the improvement of people's living standards, people have higher and higher requirements for the air quality of cars, offices and indoors. Green environment has become the theme of concern for the environment and human health. The compartments, office spaces and interiors where people live are often closed or semi-closed spaces. These places often contain free formaldehyde, alkanes, benzene, toluene, xylene and aldehydes, etc. volatilized from textiles, leather products and plastic products, carpets of various materials, adhesive glue for peach wood boards, coatings and paints, etc. Volatile organic compounds, we call these organic volatiles VOC. VOC refers to easily volatile organic substances at room temperature. The more common ones are: trichloroethylene, tetrach...

AI Technical Summary

Problems solved by technology

(1) The space inside the car is narrow and the degree of pollution is high

(2) The airtightness of the car is very strong. In most cases, the doors and windows are closed, which is not conducive to the diffusion of harmful gases

(3) The car is a mobile vehicle with a large amount of convective heat exchange with the outside world, and the external climate conditions change greatly, making it more difficult to control the temperature and other conditions

(4) The glass doors and windows of automobiles occupy a large area, and when exposed to sunlight for a long time, the temperature inside the car changes greatly

(5) The population density in the car is high, which aggravates the pollution

The heating method of this method is inefficient, and the temperature of the polymer is continuously increased by the heater, which consumes a lot of energy, and the pressure in the container needs to be controlled, and the equipment and process for removing volatiles are complicated.