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Method for modifying melamine foam

A technology of melamine and modification, applied in the field of modification of melamine foam, can solve the problems of long time and many steps, etc.

Inactive Publication Date: 2011-06-08
SICHUAN NEW ENERGY POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for modifying melamine foam. While foaming, melamine or melamine formaldehyde resin and alcohol amine compounds can generate compounds that can improve foam performance under the promotion of high temperature and microwave, and participate in foaming at the same time. To achieve the purpose of improving the performance of melamine foam, which solves the shortcomings of many steps and long time when adding modifiers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1000g solid content is 76% melamine formaldehyde resin (melamine / formaldehyde=1: 1.5), 25g emulsifier, 100g foaming agent, 40g curing agent, after pre-emulsification, add 20g melamine and 100g 2-(2-aminoethoxy Base) ethanol, stir at high speed, and mix well. Put the mixture into a microwave oven with a microwave power of 8KW and a temperature of 120°C for foaming. After 8 minutes, the foaming ends. Then put the foam into an oven at 220°C for curing. Finally, the cured foam is cut into shapes.

[0016] Foam quality: density: 10.5kg / m; tear strength: 100N / m; elongation at break: 20%.

Embodiment 2

[0018] 1000g solid content is the melamine formaldehyde resin (melamine / formaldehyde=1: 1.5) of 76%, add 100g 4-aminobutanol, stir at 100 ℃, after 30 minutes, cool to room temperature, then add 25g emulsifier, 100g hair Foaming agent, 50g curing agent, high-speed stirring, emulsification evenly. Then put the mixed solution into the microwave for foaming, the microwave power is 6KW, and the temperature is 100°C for foaming. After 10 minutes, the foaming is completed, and then it is put into an oven at 200°C for curing. Finally, the cured foam is Cut to shape.

[0019] Foam quality: density: 10kg / m3; tear strength: 95N / m; elongation at break: 20%.

Embodiment 3

[0021] 1000g solid content is the melamine formaldehyde resin (melamine / formaldehyde=1: 2) of 76%, adds 50g 4-aminobutanol and 50g 2-(2-aminoethoxyl) ethanol, stirs at 100 ℃, after 30 minutes, Cool to room temperature, then add 25g of emulsifier, 100g of foaming agent, 50g of curing agent, stir at high speed, and emulsify evenly. Then put the mixed liquid into the microwave for foaming, the microwave power is 6KW, and the temperature is 100°C for foaming. After 10 minutes, the foaming is completed, and then it is put into an oven at 220°C for curing. Finally, the cured foam is Cut to shape.

[0022] Foam quality: Density: 10.5kg / m3 Tear strength: 100N / m; Elongation at break: 20%.

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Abstract

The invention relates to a method for modifying melamine foam, which comprises the following steps of: adding an emulsifier, a foaming agent, a curing agent and other aids into a base material, namely melamine formaldehyde resin synthesized by melamine and formaldehyde in a low molar ratio, adding melamine and one or more hydramine compounds, and uniformly emulsifying; heating and foaming at certain temperature for a certain period of time through microwaves in a microwave oven; and curing at high temperature, and processing and forming. In the process of foaming through the microwaves, the melamine or the melamine formaldehyde resin and the hydramine compounds can generate a compound capable of improving the performance of foam at high temperature under the action of the microwaves, and the foam is modified at the same time, so that the aim of improving the performance of the melamine foam is fulfilled.

Description

1. Field of invention [0001] The invention relates to a modification method of melamine foam. 2. Background technology [0002] In recent years, melamine foam has been used as a new material. In addition to the valuable properties of general foam materials, the low density, low thermal conductivity, good flame retardancy, moisture and heat resistance and three-dimensional network structure of foam materials give it good Thermal insulation, sound absorption and noise reduction, safety and sanitation, mechanical processing and other properties. In addition, melamine foam is made by high-temperature foaming, and the residual free formaldehyde content is low, which makes melamine foam receive more and more attention. Chinese document CN 1831023 reports a melamine-formaldehyde resin synthesized from melamine and formaldehyde as a base material, then adding a foaming agent and an acid accelerator for microwave heating and foaming in a microwave oven, and then performing high-temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/04C08L61/32C08G12/40
Inventor 李枫何兴川辜凯德王继军王晓苟航朱小兰
Owner SICHUAN NEW ENERGY POWER CO LTD
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