Polyurethane flexible foam low-temperature activation powder making device and method

Abstract

The invention discloses a polyurethane flexible foam low-temperature activation powder making device and method. The powder making device comprises a polyurethane flexible foam crushing and block making module, a temporary storing and quantitative feeding module, a preliminary shearing powder making module and a differential activation powder making module which are sequentially arranged in a communicating mode. The polyurethane flexible foam crushing and block making module is used for homogenizing and cutting irregular polyurethane flexible foam waste materials, and the temporary storing and quantitative feeding module temporarily store the cut polyurethane flexible foam waste materials and quantitatively convey the cut polyurethane flexible foam waste materials to the preliminary shearing powder making module. The preliminary shearing powder making module and the differential activation powder making module can achieve low-temperature activation powder making through double-roller type strong shearing equipment with different roller diameter ratios, speed ratios, roller distances, roller speeds and mold temperature machine temperature control, so that the energy consumption is low and the efficiency is high in the polyurethane flexible foam crushing process.

Description

technical field [0001] The invention relates to the technical field of polyurethane soft foam powder making, in particular to a polyurethane soft foam low-temperature activated powder making device and a powder making method thereof. Background technique [0002] With the increase in the use of sofas, polyurethane foam waste for sofas is also increasing year by year. How to recycle polyurethane foam waste for sofas at a high value has become a difficult problem for the sofa industry. In recent years, although new regeneration methods have appeared, the recovery effect is not obvious. The main reason is that it is impossible to prepare activated micropowder with suitable particle size from polyurethane foam waste at a lower temperature (below 100 ° C). Therefore, Low-temperature activation of polyurethane foam waste is a prerequisite for its recycling. [0003] At present, there is a low-temperature crushing method, which increases the brittleness of polyurethane foam waste ...

AI Technical Summary

Problems solved by technology

The raw material pulverizer for producing polyurethane foam plastics disclosed by the present invention can repeatedly pulverize raw materials, increases the pulverization effect and no longer needs manual work, but still cannot pulverize materials into micron-level fine powders in a short time, and Excessive temperature rise during the milling process will adversely affect the performance of the milling process

[0005] Therefore, how to change the current situation in the prior art that the pulverization process of polyurethane soft foam has high energy consumption and low efficiency, and the inactivity of the prepared micropowder makes it unapplicable has become a difficult problem in the pulverization of polyurethane waste.

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