Polyurethane foamed material and processing method of composite textile of polyurethane foamed material

Abstract

The invention relates to a polyurethane foamed material and a processing method of a composite textile of the polyurethane foamed material. The processing method mainly comprises the steps: (1) performing treatment by using an aqueous solution of ethanol of 10-20%, (2) performing washing by using clear water, (3) performing dehydration and (4) performing drying. Through the processing method, theodor, TVOC, formaldehyde and PM2.5 of the polyurethane foamed material and the composite textile of the polyurethane foamed material can be reduced simultaneously so as to be lower significantly thanrelevant limit standards, and furthermore almost no influences are caused on mechanical and application performance of the polyurethane foamed material and the composite textile of the polyurethane foamed material before and after processing is conducted.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a polyurethane foam material and a processing method for composite textiles thereof. Background technique [0002] Polyurethane foam material has excellent cushioning performance and light weight performance, and is an important class of automotive interior materials. It is generally compounded under the interior textile fabric or other skin materials, and plays an important role in sound insulation, heat insulation, cushioning and protection of occupants in the car, and improvement of touch. [0003] Usually, polyurethane foam materials are prepared by polyols and isocyanates under a catalyst for polymerization and foaming with a foaming agent, which leads to short-term and / or long-term release of irritating and harmful substances to the human body. Gas, so that the odor detection of the compounded products and the interior of the car exceeds the standard, and the tot...

AI Technical Summary

Problems solved by technology

The problem is that the processing time is too long, the final quality is difficult to control, and it also pollutes the air

Many sponge compounding factories go through high-temperature baking to deodorize the sponge after compounding, but generally it can only be reduced by half a level, and it can be reduced by 1 level at most, and it is easy to deteriorate again, cannot stabilize the quality, and pollutes the air

CN204894307U discloses a device for improving sponge odor and VOC by heating. Considering that the molecular weight of some substances is relatively large, the vaporization and evaporation are very slow, and the evaporation time is long only by heating, and it is a two-way process for these gases to enter and exit between polyurethane molecules. The effect is limited, and the patent does not talk about how to reduce the content of formaldehyde and PM2.5

[0007] 3) At present, some people also try to deodorize by washing at high temperature for a very short time and then drying at high temperature. This can mainly be used to deal with small pieces of sponge, but this method does not pay attention to the possible damage to the texture of the sponge by high temperature, such as hydrolysis and thermal degradation. , without considering the impact on the mechanical properties of the sponge itself after treatment, it is not suitable for high-demand applications such as automotive interiors

At present, there is no suitable process or equipment that can effectively improve the air quality pollution problems such as odor, TVOC, formaldehyde, and PM2.5 in polyurethane foam materials and their composite textiles. Performance indicators such as elongation and appearance have basically no effect

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