Supercritical CO2 fluid foaming machine

Abstract

The invention relates to a supercritical CO2 fluid foaming machine and a foaming method thereof, and solves the technical problems of unreasonable design and the like in the prior art. The supercritical CO2 fluid foaming machine comprises a sealed cylinder body and a pressurizing device, and a heating medium stored in the sealed cylinder body, wherein the inner wall of the sealed cylinder body isconnected with a cantilever type supporting pipe; the suspended end of the cantilever type supporting pipe is connected with a horizontally arranged arc-shaped tray; a high-pressure kettle is arrangedon the arc-shaped tray, and a sealed cavity is formed between the upper surface of the arc-shaped tray and the bottom of the high-pressure kettle; the upper end of the high-pressure kettle upwards penetrates out, reaches the top of the sealed cylinder body and is connected with the pressurizing device; an agitating device located below the arc-shaped tray is also arranged at the suspended end ofthe cantilever type supporting pipe; the agitating device is connected with a power supply line penetrating into the cantilever type supporting pipe; a plurality of heating pipes distributed in the circumferential direction of the high-pressure kettle are also arranged in the sealed cylinder body; a supporting frame is arranged at the inner bottom of the high-pressure kettle. The supercritical CO2fluid foaming machine has the advantage of improving the foaming quality.

Description

technical field [0001] The invention belongs to the technical field of foaming, in particular to a supercritical CO 2 Fluid bubbler. Background technique [0002] Supercritical CO 2 The foaming device is a crucial device for the preparation of polymer porous materials. The experimental equipment is mainly composed of four parts: pressurization device, autoclave, heating device and pressure relief device. The preparation of different polymers has different requirements and conditions for the equipment. [0003] Traditional supercritical CO 2 There are mainly the following problems in the preparation of polymer porous materials by foaming devices: [0004] 1. The temperature is unevenly heated. Some foaming experiments require heating with an oil bath, and some require heating with a heating tube. Therefore, when the experimental requirements are different, a single heating design and a device lacking a stirrer will make it difficult for researchers to obtain the expected...

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Problems solved by technology

[0004] 1. The temperature is unevenly heated. Some foaming experiments require heating with an oil bath, and some require heating with a heating tube. Therefore, when the experimental requirements are different, a single heating design and a device lacking a stirrer will make it difficult for researchers to obtain the expected experimental results.

[0005] 2. The airtightness is low, and the support frame is difficult to balance. First, in the traditional device, the material bracket is connected to the autoclave or supported at the bottom of the autoclave, which easily causes problems such as unstable support and low experimental efficiency.

Second, if the exhaust valve adopts a traditional valve, it will easily weaken the airtightness of the device under the condition of high pressure

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