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Vacuum insulated panel adopting organic fiber core material and preparation method of vacuum insulated panel

A technology of vacuum insulation panels and organic fibers, applied in applications, household appliances, flat products, etc., can solve problems such as poor thermal insulation performance, inability to assist thermal insulation powder to improve thermal insulation, etc., to overcome poor thermal insulation performance, improve overall thermal insulation performance, Environmentally friendly effects of processing

Pending Publication Date: 2022-07-15
安徽蓝格利通新材应用股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a vacuum insulation panel using an organic fiber core material and its preparation method, which solves the problem that the existing organic fiber core material has poor thermal insulation performance, and cannot fill and fix a small amount of auxiliary thermal insulation powder into the organic fiber felt to improve thermal insulation. The problem

Method used

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  • Vacuum insulated panel adopting organic fiber core material and preparation method of vacuum insulated panel
  • Vacuum insulated panel adopting organic fiber core material and preparation method of vacuum insulated panel
  • Vacuum insulated panel adopting organic fiber core material and preparation method of vacuum insulated panel

Examples

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Effect test

Embodiment 1

[0031] Example 1: In this example, a hot-pressing filling device is used to perform powder filling and hot-pressing operations of the organic fiber felt, such as Figure 1 to Figure 5As shown, the hot-pressing filling device includes a frame 1 on which a guide frame 11 and a bearing block 5 are arranged, a hydraulic cylinder 2 is arranged in the center of the top of the guide frame 11, and a telescopic rod of the hydraulic cylinder 2 is provided. There is an upper pressing block 3 at the bottom, the four corners of the upper pressing block 3 are all slidably connected with the guide frame 11, and a circulating laminar flow assembly is arranged on the upper part of the upper pressing block 3, and the circulating laminar flow assembly passes the circulating air flow. The hot powder is uniformly dispersed, and the air flow containing the auxiliary heat insulating powder passes horizontally above the hot-pressing groove 32. The lower part of the upper pressing block 3 is provided w...

Embodiment 2

[0039] Example 2: The rest are the same as Example 1, except that the pressure of the hot-pressing filling device in S2 and S3 is 0.06MPa, the pressure holding time is 7min, and the thickness of the fluffy felt is 6cm.

[0040] The weight ratio of polyester fiber and 4080 fiber is 7:3; the fiber length is 35mm, and the fiber diameter is 40μm.

[0041] The auxiliary heat insulation powder is hollow glass microbeads, and the particle size of the auxiliary heat insulation powder is 100 μm. The filling amount of the auxiliary heat insulating powder in S2 is 6% of the weight of the fluffy felt. The filling amount of auxiliary heat insulating powder in S3 is 1 / 20 of that in S2.

Embodiment 3

[0042] Example 3: The rest were the same as Example 1, except that the pressure of the hot-pressing filling device in S2 and S3 was 0.1 MPa, the pressure holding time was 10 min, and the fluffy felt was 20 cm.

[0043] The weight ratio of polyester fiber and 4080 fiber is 3:1; the fiber length is 25mm, and the fiber diameter is 10μm.

[0044] The auxiliary heat insulating powder is porous carbon powder, and the particle size of the auxiliary heat insulating powder is 50 μm. The filling amount of the auxiliary heat insulating powder in S2 is 3.5% of the weight of the fluffy felt. The filling amount of auxiliary heat insulating powder in S3 is 1 / 10 of that in S2.

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Abstract

The invention discloses a vacuum insulation panel adopting an organic fiber core material and a preparation method of the vacuum insulation panel, and relates to the field of vacuum insulation materials, and the preparation method comprises the following steps: carding organic fibers by adopting a carding process, and stacking to a proper thickness after felt making to obtain a fluffy felt material; performing auxiliary heat insulation powder filling and hot pressing on the organic fiber felt twice by adopting a hot-pressing filling device; and after the secondary filling felt material is completely depressurized and cooled, drying to obtain a core material, adding a getter, coating a high-barrier film, and vacuumizing and plastically packaging to obtain the vacuum insulated panel. A small amount of auxiliary heat insulation powder is filled and fixed in the organic fiber felt material, and the auxiliary heat insulation powder can be adhered to the polyester fibers when the 4080 fibers are hot-melted through hot pressing after one-time filling, so that solid-phase heat conduction generated by hot-melt adhesion of the 4080 fibers can be effectively reduced, and the defect of poor heat insulation performance of the organic fibers can be overcome. The pore diameter of the organic fiber felt material can be further reduced through secondary filling, and the overall heat insulation performance of the core material is improved.

Description

technical field [0001] The invention relates to the field of vacuum thermal insulation materials, in particular to a vacuum thermal insulation panel using an organic fiber core material and a preparation method thereof. Background technique [0002] The core material is the core structure of VIP. According to the physical form, the core material can be divided into fiber core material, powder core material, foam core material and artificial core material. Fiber core materials are fiber aggregates composed of insulating fibers in the form of fiber cotton, fiber mat, fiberboard, paper, and cloth. The thermal conductivity of the fiber core material is related to the diameter, length, number, crimp degree, arrangement, pore structure, Young's modulus and external pressure of the fiber. Common fiber core materials include glass fiber, rock wool, slag wool and synthetic fibers. The powder core material is a powder aggregate composed of insulating powder. Compared with the coars...

Claims

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Application Information

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IPC IPC(8): B29C70/40B29C70/54B29D7/00
CPCB29C70/40B29C70/54B29D7/00
Inventor 章健汪申学曹仁慧晋春保胡健
Owner 安徽蓝格利通新材应用股份有限公司