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Core material for vacuum heat-insulating board and preparation method thereof

A vacuum insulation panel and core material technology, which is applied in the field of vacuum insulation panel core material and its preparation, can solve the problems of reduced thermal conductivity, etc., and achieve the effects of reduced thermal conductivity, good pressure resistance stability, and good thermal insulation performance

Active Publication Date: 2016-09-07
JIANGSU JINGWEI INTELLECTUAL PROPERTY OPERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above methods can reduce the thermal conductivity, the neatly arranged fiber structure has a certain limit for the reduction of the thermal conductivity. The way to reduce the thermal conductivity is only through the arrangement of fibers of different lengths, and does not affect the spatial structure of the fiber itself. Change

Method used

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  • Core material for vacuum heat-insulating board and preparation method thereof

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Embodiment 1

[0023] A vacuum insulation panel core material, the raw material components include: acrylic acid, calcium oxide, polyvinyl alcohol, methacryloylpropyltrimethylammonium chloride, stearic acid, potassium bisulfite, glass fiber, silicon dioxide , polyester fiber, 1,4-cyclohexane diisocyanate, polyethylene adipate glycol, 3-aminopropyltriethoxysilane, pentamethyldiethylenetriamine, bentonite, chain extender three Methylolpropane and Tween 20; the preparation method steps of the vacuum insulation board core material are as follows:

[0024] Step 1, add 5 parts of acrylic acid in parts by weight and 20 parts of water into the reaction kettle, add 2 parts of calcium oxide at room temperature, stir for 40 minutes, then add 3 parts of polyvinyl alcohol, continue stirring for 20 minutes, and heat up to 35 ℃, add 1 part of methacryloylpropyltrimethylammonium chloride, stir for 5 minutes, add 2 parts of stearic acid, 1 part of potassium bisulfite, stir and react for 200 minutes to obtain...

Embodiment 2

[0029] A vacuum insulation panel core material, the raw material components include: acrylic acid, calcium oxide, polyvinyl alcohol, methacryloylpropyltrimethylammonium chloride, stearic acid, potassium bisulfite, glass fiber, silicon dioxide , polyester fiber, 1,4-cyclohexane diisocyanate, polyethylene adipate, bis(γ-triethoxysilylpropyl) tetrasulfide, pentamethyldiethylenetriamine, Bentonite, chain extender diethylaminoethanol and Tween 20; the preparation method steps of the vacuum insulation board core material are as follows:

[0030] Step 1, add 7 parts by weight of acrylic acid and 26 parts of water into the reaction kettle, add 3 parts of calcium oxide at room temperature, stir for 43 minutes, then add 4 parts of polyvinyl alcohol, continue stirring for 25 minutes, and heat up to 36 ℃, add 1 part of methacryloylpropyltrimethylammonium chloride, stir for 7 minutes, add 3 parts of stearic acid, 2 parts of potassium bisulfite, stir and react for 230 minutes to obtain the ...

Embodiment 3

[0035] A vacuum insulation panel core material, the raw material components include: acrylic acid, calcium oxide, polyvinyl alcohol, methacryloylpropyltrimethylammonium chloride, stearic acid, potassium bisulfite, glass fiber, silicon dioxide , polyester fiber, 1,4-cyclohexane diisocyanate, polyethylene adipate glycol, 3-aminopropyltriethoxysilane, pentamethyldiethylenetriamine, bentonite, chain extender II Ethylaminoethanol and Tween 20; the preparation method steps of the core material of the vacuum insulation panel are as follows:

[0036] Step 1: Add 8 parts of acrylic acid in parts by weight and 32 parts of water into the reaction kettle, add 4 parts of calcium oxide at room temperature, stir for 48 minutes, then add 6 parts of polyvinyl alcohol, continue stirring for 25 minutes, and heat up to 38 ℃, add 2 parts of methacryloylpropyltrimethylammonium chloride, stir for 8 minutes, add 4 parts of stearic acid, 3 parts of potassium bisulfite, stir and react for 270 minutes t...

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Abstract

The invention discloses a core material for a vacuum heat-insulating board and a preparation method thereof. The core material comprises the following raw material components: acrylic acid, calcium oxide, polyvinyl alcohol, methacryloylpropyltrimethyl ammonium chloride, stearic acid, potassium bisulfite, glass fiber, silicon dioxide, polyester fiber, 1,4-cyclohexane diisocyanate, polyethylene adipate glycol, a silane coupling agent, pentamethyldiethylene triamine, bentonite, a chain extender and Tween 20. The preparation method comprises the following steps: successively subjecting acrylic acid, calcium oxide, polyvinyl alcohol, methacryloylpropyltrimethyl ammonium chloride, stearic acid and potassium bisulfite to reacting so as to obtain a reactant; then carrying out shearing granulation, and carrying out drying so as to obtain a material 1; and subjecting glass fiber, silicon dioxide, polyester fiber, 1,4-cyclohexane diisocyanate, polyethylene adipate glycol, the material 1 and the remained components to a certain reaction so as to obtain the core material for the vacuum heat-insulating board. The core material obtained by using the method provided by the invention has good heat-insulating performance and vacuum compression use stability.

Description

technical field [0001] The invention belongs to the technical field of heat insulation material preparation, and in particular relates to a core material of a vacuum heat insulation board and a preparation method thereof. Background technique [0002] At present, vacuum insulation panels have been used in many fields. It meets customers' requirements for new materials with excellent characteristics such as energy saving, low carbon, environmental protection, and safety. In order to obtain the above-mentioned characteristics, the selection and production method of the core material inside the vacuum insulation panel have a great influence on it. The core material is generally made of porous media materials, such as airgel, microporous polyurethane, silica powder, stone fiber wool, Fiberglass etc. For the core material of the vacuum insulation panel, it must have the following four characteristics: 1. It can support the vacuum insulation panel under high vacuum and negative p...

Claims

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Application Information

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IPC IPC(8): C04B26/32
CPCC04B26/32C04B2201/32C04B24/04C04B22/064C04B24/163C04B24/121C04B24/085C04B22/147C04B14/42C04B14/06C04B16/0683C04B24/125C04B24/283C04B14/104C04B24/32C04B24/02C04B24/122
Inventor 冯素梅
Owner JIANGSU JINGWEI INTELLECTUAL PROPERTY OPERATION CO LTD
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