Preparation method of wax phase change material

Abstract

The invention discloses a preparation method of a wax phase change material. The method is characterized in that the surface of a wax layer is uniformly carpeted with metal particles before a heating and sweating process, and air forcedly flows through the wax layer in the heating and sweating process to take away liquid components, so the solid component and liquid component separation speed is accelerated, and the solid component and liquid component separation effect is enhanced. The forced solid component and liquid component separation process is set on the basis of a common sweating process, so the wax phase change material product can be produced through the solvent-free sweating and deoiling method. The method has the advantages of low device investment, simple production process, low operating cost and no solvent pollution.

Description

technical field

[0001] The invention belongs to the technical field of special wax production, and in particular relates to a preparation method of a wax phase change material. Background technique

[0002] Phase Change Material (PCM for short) does not change much in temperature during melting or solidification, but absorbs or releases considerable latent heat in a small temperature range. This characteristic makes it useful in constant temperature and energy storage. Wide range of applications. Generally, phase change materials are required to have appropriate phase change temperature and large phase change latent heat. In the early 1980s, the United States applied phase change materials to the aerospace field and achieved good application results, and then widely used in the military field. At the end of the 1980s, phase change materials began to be used in civilian applications, and some products have been sold in the US and European markets.

[0003] According to the...

Examples

Embodiment 1

[0047] This embodiment includes: (1) preparation work, (2) charging, (3) cooling - high temperature constant temperature - cooling - low temperature constant temperature crystallization, (4) heating - constant temperature sweating, (5) crude product collection, (6) product Refining and molding, packaging and other processes.

[0048] (1) Preparation

[0049] Connect the sealing system on the upper part of the sweating dish with the buffer tank and the compressor. A buffer tank is installed on the lower part of the sweat dish and a vacuum pump is connected.

[0050] The lower part of the sweating dish plate is cushioned with water.

[0051] Connect the jacket of the sweating dish with a movable coil and a circulation system with programmed cooling / heating function, using water as the heat transfer medium.

[0052] Start the heating function of the circulation system to raise the temperature of the circulating water medium to 78°C.

[0053] (2) Loading

[0054] Use No. 72 s...

Embodiment 2

[0072] This embodiment includes: (1) preparation, (2) charging, (3) cooling - high temperature constant temperature - cooling - low temperature constant temperature crystallization, (4) heating - constant temperature sweating, (5) crude product collection and metal particle recovery, (6) Product refining and molding, packaging and other processes.

[0073] (1) Preparation

[0074] Sieve out 20 mesh to 40 mesh lead particles and zinc particles, and mix them evenly at a weight ratio of 1:1.

[0075] Connect the sealing system on the upper part of the sweating dish with the buffer tank and the compressor. A buffer tank is installed on the lower part of the sweat dish and a vacuum pump is connected.

[0076] The lower part of the sweating dish is covered with water; the bottom of the sweating dish is covered with double layers of medium-speed filter paper.

[0077] The jacketed sweating dish is connected with a movable coil and a circulation system with programmed cooling / heati...

technical field

[0001] The invention belongs to the technical field of special wax production, and in particular relates to a preparation method of a wax phase change material. Background technique

[0002] Phase Change Material (PCM for short) does not change much in temperature during melting or solidification, but absorbs or releases considerable latent heat in a small temperature range. This characteristic makes it useful in constant temperature and energy storage. Wide range of applications. Generally, phase change materials are required to have appropriate phase change temperature and large phase change latent heat. In the early 1980s, the United States applied phase change materials to the aerospace field and achieved good application results, and then widely used in the military field. At the end of the 1980s, phase change materials began to be used in civilian applications, and some products have been sold in the US and European markets.

[0003] According to the...

Examples

Embodiment 1

[0047] This embodiment includes: (1) preparation work, (2) charging, (3) cooling - high temperature constant temperature - cooling - low temperature constant temperature crystallization, (4) heating - constant temperature sweating, (5) crude product collection, (6) product Refining and molding, packaging and other processes.

[0048] (1) Preparation

[0049] Connect the sealing system on the upper part of the sweating dish with the buffer tank and the compressor. A buffer tank is installed on the lower part of the sweat dish and a vacuum pump is connected.

[0050] The lower part of the sweating dish plate is cushioned with water.

[0051] Connect the jacket of the sweating dish with a movable coil and a circulation system with programmed cooling / heating function, using water as the heat transfer medium.

[0052] Start the heating function of the circulation system to raise the temperature of the circulating water medium to 78°C.

[0053] (2) Loading

[0054] Use No. 72 s...

Embodiment 2

[0072] This embodiment includes: (1) preparation, (2) charging, (3) cooling - high temperature constant temperature - cooling - low temperature constant temperature crystallization, (4) heating - constant temperature sweating, (5) crude product collection and metal particle recovery, (6) Product refining and molding, packaging and other processes.

[0073] (1) Preparation

[0074] Sieve out 20 mesh to 40 mesh lead particles and zinc particles, and mix them evenly at a weight ratio of 1:1.

[0075] Connect the sealing system on the upper part of the sweating dish with the buffer tank and the compressor. A buffer tank is installed on the lower part of the sweat dish and a vacuum pump is connected.

[0076] The lower part of the sweating dish is covered with water; the bottom of the sweating dish is covered with double layers of medium-speed filter paper.

[0077] The jacketed sweating dish is connected with a movable coil and a circulation system with programmed cooling / heati...