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Glass fiber and phenolic composite core material vacuum heat insulation plate and preparing method thereof

A glass fiber and composite core technology, applied in heat exchange equipment, mechanical equipment, and protection of pipes through thermal insulation, etc., can solve the problems of high cost, high density, low thermal conductivity of VIP board, etc., to improve product quality, improve resistance Compressive strength, the effect of overcoming easy breakage

Inactive Publication Date: 2009-04-01
FUJIAN SUPERTECH ADVANCED MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each material has its advantages and disadvantages, glass fiber has high strength, and the VIP board made of it has low thermal conductivity, but it has high density and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Add 100g of phenol, 180g of formaldehyde aqueous solution and 1g of sodium hydroxide into the reactor and raise the temperature to 70°C, keep the temperature for 240min, then heat to boiling and keep at 80±2°C for 60min, after cooling, add formic acid with a concentration of 3.5% for neutralization, Remove water and unreacted aldehydes and phenols under reduced pressure at a temperature of 65° C., and then discharge the material. Keep the vacuum up to 0.086 mpa, and the concentration of the formaldehyde solution is 37%.

[0038] 2) Foaming: After mixing 100g of dehydrated resin, 2g of ethylene glycol, 1.5g of DC-193 silicone oil, 1.3g of cell opener and 8g of foaming agent, add 28g of curing agent, stir well and pour into the mold, put Foaming in an oven at a temperature of 70°C, take it out after the foam is solidified, and cut the required specification material, the opening agent is selected from sodium lauryl sulfate and sodium toluenesulfonate, sodium lauryl sulf...

Embodiment 2

[0049] Similar to Example 1, the difference is that 100g of phenol, 185g of formaldehyde aqueous solution and 0.8g of sodium hydroxide are added to the reactor and the temperature is raised to 68°C, kept at a constant temperature for 300min, then heated to boiling and kept at 80±2°C for 70min, and the concentration is added after cooling Neutralize with 5% formic acid, remove water and unreacted aldehydes and phenols under reduced pressure at a temperature of 60°C, and then discharge, keep the vacuum up to 0.085mpa, and the concentration of the formaldehyde solution is 37.5%.

[0050] When foaming, mix 100g of dehydrated resin, 2.5g of ethylene glycol, 1.8g of DC-193 silicone oil, 1.5g of cell opening agent and 6g of foaming agent, add 20g of curing agent, stir well and pour into the mold, put Foam in an oven with a temperature of 65°C, take it out after the foam solidifies, and cut the required specification materials, sodium lauryl sulfate: sodium toluenesulfonate = 1: 1.5, p...

Embodiment 3

[0053] Similar to Example 1, the difference is that 100g of phenol, 170g of formaldehyde aqueous solution and 1.5g of sodium hydroxide are added to the reactor and the temperature is raised to 72°C, kept at a constant temperature for 220min, then heated to boiling and kept at 80±2°C for 50min, and the concentration is added after cooling Neutralize with 3% formic acid, remove water and unreacted aldehydes and phenols under reduced pressure at a temperature of 70°C, then discharge, keep the vacuum up to 0.090mpa, and the concentration of formaldehyde solution is 36%.

[0054] When foaming, mix 100g of resin obtained from dehydration, 3g of ethylene glycol, 1g of DC-193 silicone oil, 1g of cell opener and 10g of foaming agent, add 30g of curing agent, stir evenly and pour into the mold. ℃ oven foaming, until the foam is solidified, take it out, cut the required specification material, sodium lauryl sulfate: sodium toluenesulfonate = 1: 1, petroleum ether: n-pentane = 1: 1, curing...

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Abstract

The present invention relates to vacuum insulating plate (VIP), and is VIP with core of composite glass fiber and phenolic aldehyde material and its preparation process. The VIP is one three layer structure, including the upper glass fiber layer, the lower glass fiber layer and the middle foamed phenolic aldehyde layer. The preparation process includes the following steps: reacting water solution of phenol and formaldehyde and sodium hydroxide at 80 deg.C, cooling and adding formic acid to neutralize, and decompressing; foaming the dewatered resin with glycol, DC-193 silicone oil, pore creating agent and foaming agent in a mold, curing, slotting and setting getter; heating foamed phenolic resin and glass fiber in a furnace while vacuuming, cooling to below 80 deg.c; taking out the core material, packing into packing bag, opening the getter, vacuumizing, sealing the packing bag; and taking the VIP after filling air into the vacuum chamber.

Description

technical field [0001] The invention relates to a vacuum insulation panel (VIP panel), in particular to a glass fiber and phenolic composite core material VIP panel and a preparation method thereof. Background technique [0002] Existing VIP board core materials are all made of a single material, such as glass fiber, phenolic or polyurethane. Each material has its advantages and disadvantages, glass fiber has high strength, and the VIP board made of it has low thermal conductivity, but it has high density and high cost. Phenolic is the opposite. The phenolic core material has poor strength and is not resistant to atmospheric pressure. After being made into a VIP board, the thermal conductivity is high, but it is light in weight and cheap. For example: the price of glass fiber core material is 23 yuan per kilogram, and the price of phenolic core material is 30 yuan per kilogram. If the VIP board with a thickness of 20mm needs to use 5 kg of glass fiber per square meter, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L59/06
Inventor 汪坤明胡永年纪白浪
Owner FUJIAN SUPERTECH ADVANCED MATERIAL
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