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Glass fiber chopped strand mat, production method and core material for vacuum heat-insulation boards

A technology of vacuum insulation panel and glass fiber, which is applied in the directions of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, mechanical equipment, etc. , to achieve the effect of reducing production costs

Active Publication Date: 2013-03-06
FUJIAN SUPERTECH ADVANCED MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the Chinese patent No. ZL 200410058742.6 "Production Method of Core Material for Vacuum Insulation Materials", the average diameter of the inorganic fibers used is 3-5 μm, which is on the edge of the fiber diameter of 4 μm, which is not suitable for environmental protection requirements
In the process of producing long and short glass fibers and preparing various glass fiber products, defective products and scraps are often produced.

Method used

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  • Glass fiber chopped strand mat, production method and core material for vacuum heat-insulation boards
  • Glass fiber chopped strand mat, production method and core material for vacuum heat-insulation boards
  • Glass fiber chopped strand mat, production method and core material for vacuum heat-insulation boards

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Novel glass fiber chopped strand mat of the present invention, wet preparation process is as follows:

[0023] (1) Put the preferred length 6mm, glass fiber chopped strands with a fiber diameter of 9 μm and thickener, dispersant, defoamer, into the beater for batching, and disperse by beating;

[0024] (2) Evenly arrange the slurry suitable for a certain quality on the filter screen of the single wire forming machine through the conveying equipment, and then carry out forced negative pressure dehydration and shaping to obtain wet continuous glass fiber chopped strand mat;

[0025] (3) Transport the wet continuous glass fiber chopped strand mat to an oven at 100-250°C for drying, and transport it to the cutting area for cutting to obtain a sheet-like core material meeting the size requirements;

[0026] (4) Stack the continuous glass fiber chopped strand mats of the same size neatly for later use.

[0027] Wherein, the molded core material mentioned in step (3) has a th...

Embodiment 2

[0029] The glass fiber chopped strand mat of the present invention is used as a core material of a vacuum insulation panel, and the preparation process of the vacuum insulation panel is as follows:

[0030] (1) The novel glass fiber chopped strand mat in Example 1 is placed in a heat treatment furnace and heated with a maximum temperature of 170°C;

[0031] (2) When the temperature rises to the set value of 170°C, keep it warm for 60 minutes, open the heat treatment furnace and take out the new glass fiber chopped strand mat;

[0032] (3) Pack the laminated glass fiber chopped strand mat into a high-barrier packaging bag according to the thickness requirements, and place the getter at a specific position;

[0033] (4) Putting the high-barrier packaging bag with glass fiber chopped strand mat into a pre-set vacuum sealing machine for sealing to obtain a vacuum insulation panel;

[0034] (5) Turn on the vacuum sealing machine and take out the vacuum insulation panel.

[0035] ...

Embodiment 3

[0041] Glass fiber chopped strand mat of the present invention, wet process is as follows:

[0042] (1) 50Kg of the alkali-free glass fiber chopped strands with a preferred length of 6mm and a fiber diameter of 9 μm and thickener (chemical name: hydroxypropyl methylcellulose) 1.2Kg, dispersant (chemical name: fatty alcohol poly Oxyethylene ether silane) 1.2Kg, defoamer (organopolysiloxane mixture) 5g, other additives (preservatives: chlorothalonil or sodium nitrite) 4g are batched according to mass ratio and put into the beater for beating dispersion;

[0043] (2) The slurry with a concentration of 0.5‰ is evenly arranged on the filter screen of the single wire forming machine through the conveying equipment, and then the wet continuous glass fiber chopped strand mat is obtained after forced negative pressure dehydration and setting;

[0044] (3) Transport the wet continuous glass fiber chopped strand mat to an oven at 50-180° C. for drying, and transport it to the cutting ar...

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Abstract

The invention discloses a glass fiber chopped strand mat which is made of glass fibers 4-25mm in length and 5-15 micrometers in diameter by steps of preparing pulp by adding thickeners, dispersing agents and defoaming agents and then dewatering and drying, and is 0.1-2.0mm in thickness. The glass fibers are scraps from glass fiber production enterprises. The production method of the glass fiber chopped strand mat includes the process of manufacturing paper with pulp in the paper making technology. On the premise of the same production manner, production cost of a core material is reduced by 10-50%, and the heat conduction coefficient of a vacuum heat-insulation board made by the core material is reduced by 25-65%.

Description

technical field [0001] The invention relates to a glass fiber chopped strand mat, a preparation method and application of the chopped strand mat. Background technique [0002] Glass fiber chopped strand mat is a main glass fiber non-woven reinforcement material, which is made by chopping continuous glass fiber to about 50mm, uniformly distributed without direction, using powder or emulsion as binder, and laying felt by sedimentation . It is characterized by low price, but it is easy to cause breakage during large-scale construction, so it has become the largest reinforcing material in the glass fiber reinforced polymer hand lay-up process, and is also widely used in mechanical forming processes such as winding and molding. [0003] Vacuum insulation panels are an upgraded product of thermal insulation materials. There are various core materials. Generally, fiber or porous media materials with excellent thermal resistance properties are selected. According to different core...

Claims

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Application Information

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IPC IPC(8): D04H1/4218F16L59/065
CPCD21H13/40
Inventor 杨胜利洪国莹陈桂花
Owner FUJIAN SUPERTECH ADVANCED MATERIAL
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