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Powder core vacuum insulation panel for building and preparing method thereof

A technology for vacuum insulation panels and buildings, which is used in building components, insulation improvement, climate change adaptation, etc., can solve the problems of high overall cost of vacuum insulation panels, and achieve excellent compressive strength, simple preparation method, and low thermal conductivity. The effect of coefficients

Active Publication Date: 2015-05-20
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic and foreign inorganic powder core materials mainly use expensive fumed silica as the main raw material, resulting in high overall cost of this type of vacuum insulation panels. Powder Core Material Vacuum Insulation Panel

Method used

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  • Powder core vacuum insulation panel for building and preparing method thereof

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Comparison scheme
Effect test

preparation example Construction

[0028] refer to figure 1 , the preparation method of a kind of construction powder core material vacuum insulation board that the present invention proposes, comprises the following steps:

[0029] S1. Weigh calcium silicate hydrate powder, silicon dioxide powder, reinforcing fiber, and auxiliary materials according to parts by weight, and put them into a mixer for thorough mixing;

[0030] S2. Put the uniformly mixed powder into a mold, and press and form it under a pressure of 0.1 MPa to 10 MPa to form a powder core material;

[0031] S3, drying the pressed powder core material at 100-200°C;

[0032] S4. Cover the dried powder core material with non-woven fabric, put it into a high-barrier composite film bag, vacuumize it, and heat seal it to obtain a powder core material vacuum insulation board for construction.

Embodiment 1

[0034] A method for preparing a powder core material vacuum insulation panel for construction, comprising the following steps:

[0035] S1, according to CaO / SiO 2 The molar ratio is 0.75. Weigh quicklime and quartz as solid raw materials. Measure water with the weight ratio of solid raw materials and water as 1:50. Add water to the solid raw materials and mix well. , drying to obtain calcium silicate hydrate powder;

[0036] S2. Take 100 parts by weight of calcium silicate hydrate powder prepared by S1, 50 parts of fumed silica powder, 3 parts of glass fiber, and 1 part of microsilica powder, and put them into a mixer to fully mix;

[0037] S3, put the uniformly mixed powder into a mould, and press it under a pressure of 0.1MPa to form a powder core material;

[0038] S4, drying the pressed powder core material at 100°C;

[0039] S5. Put the dried powder core material into a high-barrier composite film bag, vacuumize and heat seal to obtain a powder core material vacuum ins...

Embodiment 2

[0041] A method for preparing a powder core material vacuum insulation panel for construction, comprising the following steps:

[0042] S1, according to CaO / SiO 2 The mol ratio is 0.9, which means that lime and amorphous silica are removed as solid raw materials, and the weight ratio of solid raw materials and water is 1:30 to measure water, add water to the solid raw materials and mix evenly, keep warm for 15 hours, and the heat preservation temperature is 220°C, dehydration, drying to obtain calcium silicate hydrate powder;

[0043] S2. Take 80 parts by weight of calcium silicate hydrate powder prepared by S1, 80 parts of fumed silica powder, 3.2 parts of polypropylene fiber, and 3.2 parts of diatomaceous earth, and put them into a mixer to fully mix;

[0044] S3, put the uniformly mixed powder into a mould, and press it under a pressure of 1MPa to form a powder core material;

[0045] S4, drying the pressed powder core material at 120°C;

[0046]S5. Cover the dried powde...

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Abstract

The invention discloses a powder core vacuum insulation panel for a building and a preparing method of the powder core vacuum insulation panel. Calcium silicate hydrate powder, silicon dioxide powder, reinforced fibers and auxiliary materials are fully mixed, the mixed powder is pressed to be formed and dried, a dried powder core is wrapped by non-woven fabric and put into a high-barrier-property composite film bag, and the powder core is manufactured in a heat seal mode after vacuum pumping is conducted, wherein the calcium silicate hydrate powder is prepared by calcium raw materials and silica raw materials through a liquid chemistry reaction. According to the powder core vacuum insulation panel for the building, the calcium silicate hydrate powder serves as the main raw material of the powder core, weight is low, price is low, and the powder core is resistant to fires and flames, has good compression strength and a low heat conduction coefficient and can be applied to the field of building wall insulation. The invention further provides a preparing method of the powder core vacuum insulation panel for the building. The preparing method is simple and high in volume production efficiency.

Description

technical field [0001] The invention relates to the field of building technology, in particular to a powder core material vacuum insulation panel for building and a preparation method thereof. Background technique [0002] Vacuum insulation panel (VIP panel) is a high-tech vacuum insulation material with high efficiency and energy saving. Since the heat transfer caused by air convection is effectively avoided, it has very excellent thermal insulation performance. Applying it to the field of building insulation can effectively reduce building energy consumption. According to the follow-up test results of the model project in Munich, Germany, the annual energy consumption of construction projects using vacuum insulation panels as insulation materials is only one-tenth of the average energy consumption of the city of Munich, and the product has a service life of more than 50 years . Therefore, vacuum insulation panels have great application prospects in the field of building...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/80C04B28/04
CPCY02A30/242Y02B80/10
Inventor 孙俊陈林王化田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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