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Compound felt with function of phase change and preparation process thereof

A preparation process and technology of composite felt, applied in textiles and papermaking, fiber processing, heat exchange materials, etc., can solve the problems of not being used for a long time, affecting the efficacy and practicality of phase change materials, and improving heat absorption and heat insulation performance. , to prevent loss, the effect of simple processing and preparation process

Inactive Publication Date: 2014-04-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has high temperature resistance performance, it still cannot be used for a long time in the high temperature environment of the fire site
[0008] It can be seen from the above patented technologies that although the obtained textile products or materials have a certain heat insulation effect and phase change temperature regulation performance, the phase change materials used are limited to the low temperature range (30-150 ° C), and mainly through the Phase change materials are encapsulated in a microcapsule carrier system with a diameter of 10.0 μm and then applied to textile products, which largely affects the effectiveness and long-term practicality of phase change materials.

Method used

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  • Compound felt with function of phase change and preparation process thereof
  • Compound felt with function of phase change and preparation process thereof
  • Compound felt with function of phase change and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Using the hierarchical structure of the phase-change functional composite felt of the present invention and the materials in the following table, and using the phase-change functional composite felt prepared by the preparation method of the present invention, it is placed under the condition of a high temperature heat source of 650 ° C, and the actual measured The maximum temperature defined on the inner side, i.e. the reverse side, and its duration are shown in column Example 1 of the table below. According to the actual visual observation, the surface is intact, the phase change material has no molten dripping, and there is no obvious embrittlement point or crack when kneading and bending. This proves that the function-changing composite felt has stable fire-proof and heat-insulating properties.

Embodiment 2

[0040] Using the hierarchical structure of the phase-change functional composite felt of the present invention and the materials in the following table, and using the phase-change functional composite felt prepared by the preparation method of the present invention, it is placed under the condition of a high-temperature heat source at 700 ° C, and the actual measured The maximum temperature defined on the inner side, i.e. the reverse side, and its duration are shown in column Example 1 of the table below. According to the actual visual observation, the surface is intact, the phase change material has no molten dripping, and there is no obvious embrittlement point or crack when kneading and bending. This proves that the function-changing composite felt has excellent thermal insulation performance.

Embodiment 3

[0042] Using the hierarchical structure of the phase-change functional composite felt of the present invention and the materials in the following table, and using the phase-change functional composite felt prepared by the preparation method of the present invention, it is placed under the condition of a high temperature heat source of 650 ° C, and the actual measured The maximum temperature defined on the inner side, i.e. the reverse side, and its duration are shown in column Example 1 of the table below. According to the actual visual observation, the surface is intact, the phase change material has no molten dripping, and there is no obvious embrittlement point or crack when kneading and bending. This proves that the function-changing composite felt has excellent thermal insulation performance.

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Abstract

The invention relates to a compound felt with the function of phase change and a preparation process. The compound felt is prepared by compounding a nonwoven felt of fibre with high-temperature resistance and phase-change powder adhered to the fibre or additional base cloth. According to the preparation method of the compound felt with the function of phase change, the phase-change powder is evenly spread on the nonwoven felt, and the phase-change powder entering the nonwoven felt is molten in different fibre layers and is also adhered to the fibre by synchronous shaking and heating control so as to form the compound felt in which the phase-change powder is in natural graded distribution. The thickness of the compound felt is not smaller than 1mm, and the weight per square meter is not smaller than 80g / m<2>. The compound felt can be independently used and can also be used as a certain layer of a compound heat insulating material. When the compound felt acts in a fire scene with high temperature and high heat, the phase-change material in the compound felt is subjected to phase change to absorb heat and limit the temperature, thus playing favorable effects of heat insulating and time-delay heating. The compound felt with the function of phase change can be used for the protection of an individual and the heat insulation of an environment in high-temperature special occasions, such as fire control, military affairs, exploration, safety escape, industries and the like.

Description

technical field [0001] The invention relates to an intelligent and recyclable heat-insulating phase-change composite felt and a preparation method of the composite felt, belonging to the intelligent composite material technology for heat insulation and protection of human body or ambient temperature. Background technique [0002] High-temperature or high-heat environments such as fire scenes have requirements for heat insulation and durability, so the development of long-term fire-resistant and heat-insulating fabrics has always been a frontier topic of research. The most direct embodiment of the thermal insulation and durability of the fabric is to ensure the safety of the human body when exposed to high temperature or high heat environment for a long time, that is, the human body does not suffer from skin burns or burns. Phase change material PCM (Phase Change Material) is widely used in fire-proof and heat-insulating textiles because its phase change process can realize t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M23/00D06M23/08D06M23/16C09K5/06
Inventor 于伟东郝立才王鲁州杜赵群
Owner DONGHUA UNIV