A kind of preparation method of porous carbonaceous heat source material

Abstract

The invention discloses a method for preparing a porous carbon heat source material. The method includes the steps that all components and water are primarily mixed through a mixing machine, and then are fed into a screw extruder to continue to be mixed; meanwhile, a foaming agent CO2 is injected into the screw extruder, extrusion molding is conducted after foaming, then drying and cutting are conducted, and the porous carbon heat source material is obtained. According to the method, due to the porous characteristic of a porous carbon heat source, the porous carbon heat source is easy to ignite, full in burning and smooth in thermal flow transferring, and the difficulty, caused by the complex-longitudinal-channel design, of processing molding and reduction, caused by the complex-longitudinal-channel design, of mechanical strength are avoided.

Description

1. Technical field [0001] The invention relates to a method for preparing a heat source material for cigarettes, in particular to a method for preparing a porous carbonaceous heat source material, which can be used for low-temperature cigarettes and belongs to the field of new tobacco products. 2. Background technology [0002] Low-temperature heating cigarettes generally convey satisfaction and tobacco aroma to consumers by heating non-burning tobacco. Their appearance and consumption methods are also similar to traditional cigarettes, which to a certain extent adapt to and satisfy consumers' physiological needs and psychological needs. This "heat not burn" method enables the tobacco to be heated only at a lower temperature (ideal temperature range 450-550°C), avoiding the generation of a large number of harmful compounds caused by the high temperature environment when the tobacco is burned, and because there is basically no side effects No second-hand smoke will be genera...

AI Technical Summary

Problems solved by technology

Existing carbonaceous heat sources are often provided with multiple longitudinal channels (CN102458165A, US4881556, CN101420876A, CN89104936.3, CN1100453A, CN103263084A, etc.) to improve its ignition, combustion adequacy and heat transfer efficiency, but complex physical structures give Material processing brings difficulty and also reduces the mechanical strength of the material, which in turn reduces the processing tolerance and thermal collapse resistance

CN103233295A and CN103263077A propose a method of crosslinking carbonaceous heat source materials using calcium salts. The prepared materials have a loose structure and gaps, and hot air can pass through smoothly, and the crosslinked and solidified network structure can improve mechanical strength and heat resistance Collapsibility, but the size of the carbon powder used is too large, which will inevitably cause great damage to the combustibility and mechanical strength of the material

However, the preparation process of these two methods is loaded down with trivial details, and the energy consumption is high.

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