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Heat-insulated constant-temperature plastic profile containing shape-stabilized phase change material and production process of heat insulated constant-temperature plastic profile

A technology of plastic profiles and phase change materials, which is applied in the direction of heat exchange materials, layered products, synthetic resin layered products, etc., can solve the problems such as the great difference between the phase change process and the thermal performance of the phase change, and achieve the latent heat of phase change Larger, lower supercooling, and solve the effect of leakage

Active Publication Date: 2013-09-18
JIANGSU ZHONGHENG PET ARTICLES JOINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The sodium sulfate in the above-mentioned patent is anhydrous sodium sulfate, which is a high-temperature phase change material, and sodium sulfate containing 10 crystal waters is essentially two kinds of substances, which are very different in phase change process and thermal performance of phase change

Method used

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  • Heat-insulated constant-temperature plastic profile containing shape-stabilized phase change material and production process of heat insulated constant-temperature plastic profile
  • Heat-insulated constant-temperature plastic profile containing shape-stabilized phase change material and production process of heat insulated constant-temperature plastic profile

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preparation example Construction

[0026] B. Preparation of thermoplastic profile 1 with concave holes 2: prepare thermoplastic profile 1 with multiple concave holes 2 by extrusion blow molding, extrusion temperature is 130-190°C, blowing air pressure is 0.5- 2Mpa;

[0027] C. Encapsulation of activated carbon 3 with sodium sulfate adsorbed on the shaped phase change material: place the activated carbon 3 adsorbed with sodium sulfate in the concave hole 2, heat the pre-extruded thermal plastic sheet covering layer 4 to 120-190°C, The thermal plastic sheet covering layer 4 is closely attached to the upper end of the thermal plastic profile 1 with the concave hole 2, and the concave hole 2 is sealed by applying pressure at a pressure of 0.5-1.5Mpa to obtain a thermally insulating and constant temperature plastic profile.

[0028] The thermoplastic profile 1 can be polypropylene, polyethylene or polystyrene.

Embodiment 1

[0030] The production process of heat-insulating and constant-temperature plastic profiles containing shaped phase-change materials includes the following steps:

[0031] A. Preparation of activated carbon 3 with sodium sulfate adsorbed on the stereotyped phase change material: according to 142 parts of Na 2 SO 4 with 180 H 2 O (molar ratio 1:10), formulated as Na 2 SO 4 Saturated solution; add 100 parts of activated carbon to 30-80 parts of Glauber's salt Na 2 SO 4 Saturated solution, so that Na 2 SO 4 The saturated solution is completely absorbed by activated carbon;

[0032] B. Preparation of a thermoplastic profile 1 with concave holes 2: a polyethylene hollow profile with a plurality of concave holes 2 is prepared by extrusion blow molding, the distance between the concave holes 2 is 10mm, and the depth of the concave holes 2 is 10mm, the radius of concave hole 2 is 5mm, the extrusion temperature is 130-190℃, and the blowing air pressure is 1Mpa;

[0033] C. E...

Embodiment 2

[0036] The production process of heat-insulating and constant-temperature plastic profiles containing shaped phase-change materials includes the following steps:

[0037] A. Preparation of activated carbon 3 with sodium sulfate adsorbed on the stereotyped phase change material: according to 142 parts of Na 2 SO 4 with 180 H 2 O (molar ratio 1:10), formulated as Na 2 SO 4 Saturated solution; add 100 parts of activated carbon to 30-80 parts of Glauber's salt Na 2 SO 4 Saturated solution, so that Na 2 SO 4 The saturated solution is completely absorbed by activated carbon;

[0038] B. Preparation of a thermoplastic profile 1 with concave holes 2: a polyethylene hollow profile with a plurality of concave holes 2 is prepared by extrusion blow molding, the distance between the concave holes 2 is 15mm, and the depth of the concave holes 2 is 15mm, the radius of concave hole 2 is 10mm, the extrusion temperature is 130-190℃, and the blowing air pressure is 1Mpa;

[0039] C. ...

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Abstract

The invention discloses a heat-insulated constant-temperature plastic profile containing a shape-stabilized phase change material and a production process of the heat-insulated constant-temperature plastic profile. The heat-insulated constant-temperature plastic profile comprises a thermoplastic profile, wherein the thermoplastic profile is uniformly provided with a plurality of concave holes; active carbon on which sodium sulfate is absorbed is arranged in the concave holes; a thermoplastic sheet covering layer is arranged on the thermoplastic profile; and the active carbon on which sodium sulfate is absorbed is covered in the concave holes by the thermoplastic sheet covering layer. The heat-insulated constant-temperature plastic profile has the advantages that sodium sulfate decahydrate is used as the phase change material, and sodium sulfate is proper in phase change temperature, large in latent heat of phase change and low in price; the active carbon is a porous material, and the liquid-phase added pressure of micropores can play roles in sealing and storing phase change liquid; the sizes of heterogeneous points on the walls of the micropores and the sizes of the pores are small, so that the nucleation and crystallization of the sodium sulfate decahydrate can be favorably realized, and then the degree of supercooling of the sodium sulfate decahydrate is reduced; and the active carbon is packaged by using hollow thermoplastics with the concave holes, so that the problem of phase change material leakage is solved, and the shape and size of the material can be adjusted.

Description

technical field [0001] The invention relates to a pet product and its production process, in particular to a heat-insulating and constant-temperature plastic profile containing a shaped phase-change material and its production process. Background technique [0002] The stereotyped phase change material (PCM) can absorb the heat (cold) of the environment during its phase change process, and release the heat (cold) to the environment when needed, so as to achieve the purpose of controlling the temperature of the surrounding environment. Crystalline hydrate is the most common phase change material, but when it is packaged with inorganic materials, it is prone to leakage. Therefore, after several phase change cycles, the phase change heat will decrease, affecting its ability. [0003] The patent application number 201210544805 discloses a shaped phase change material that can enhance heat storage and exchange efficiency and its preparation method. The invention uses higher fatty...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/32B32B27/30C09K5/06
Inventor 仇斌侯贵华张峰戴少俊
Owner JIANGSU ZHONGHENG PET ARTICLES JOINT CO LTD
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