A kind of processing method of polyurethane foam material and its composite textile

Abstract

The invention relates to a processing method for polyurethane foam material and composite textiles thereof, which mainly includes: 1) processing process with 10-20% ethanol aqueous solution; 2) washing process with clear water; 3) dehydration process; 4) drying process . This treatment method can simultaneously reduce the odor, TVOC, formaldehyde, and PM2.5 of polyurethane foam materials and their composite textiles, making them significantly lower than the relevant limit standards. There is basically no effect on the mechanical and performance properties.

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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