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Preparation process of high resilience daily-use melamine foam

A melamine and preparation technology, which is applied in the field of material preparation, can solve the problems of no advantages, etc., and achieve the effects of increasing the rebound rate, reducing the foaming dosage, and improving the rebound performance

Active Publication Date: 2019-06-04
JIAXING HANGXING FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, melamine foam has been widely used in the field of daily necessities. For example, because melamine foam has excellent flame retardancy, it replaces polyurethane foam to make seat cushions, but the rebound rate of existing melamine foam is usually between 20 and 40. % In this range, compared with polyurethane foam, there is no advantage

Method used

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  • Preparation process of high resilience daily-use melamine foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation process of high-resilience daily-use melamine foamed plastics, the specific steps are as follows:

[0033] (1) Add melamine into the formaldehyde solution, use triethanolamine to adjust the pH value to 9, heat to 85°C and react for 50 minutes to generate melamine formaldehyde resin, add polyvinyl butyral, polyester polyol and polyether modification while stirring A non-toxic polysiloxane copolymer, fed with nitrogen, continued to react for 40 minutes, added concentrated hydrochloric acid to adjust the pH to neutral, and dehydrated to obtain a modified melamine resin;

[0034] (2) Mix and stir the modified melamine resin obtained in step (1) with a surfactant and a blowing agent to obtain the first material, which is set aside;

[0035] (3) Mix and stir isooctyl mercaptopropionate and liquid curing agent evenly to obtain the second material, which is set aside;

[0036] (4) Keep stirring the first material obtained in step (2) for 2 hours, preheat to 50°C,...

Embodiment 2

[0044] A preparation process of high-resilience daily-use melamine foamed plastics, the specific steps are as follows:

[0045] (1) Add melamine into the formaldehyde solution, use triethanolamine to adjust the pH value to 10, heat to 90°C for 60 minutes to generate melamine formaldehyde resin, add polyvinyl butyral, polyester polyol and polyether modification while stirring A non-toxic polysiloxane copolymer, fed with nitrogen, continued to react for 50 minutes, added concentrated hydrochloric acid to adjust the pH to neutral, and dehydrated to obtain a modified melamine resin;

[0046] (2) Mix and stir the modified melamine resin obtained in step (1) with a surfactant and a blowing agent to obtain the first material, which is set aside;

[0047] (3) Mix and stir isooctyl mercaptopropionate and liquid curing agent evenly to obtain the second material, which is set aside;

[0048] (4) Keep stirring the first material obtained in step (2) for 2 hours, preheat to 60°C, then add...

Embodiment 3

[0056] A preparation process of high-resilience daily-use melamine foamed plastics, the specific steps are as follows:

[0057] (1) Add melamine to the formaldehyde solution, use triethanolamine to adjust the pH value to 9, heat to 90°C for 50 minutes to generate melamine formaldehyde resin, and add polyvinyl butyral, polyester polyol and polyether modification while stirring A non-toxic polysiloxane copolymer, fed with nitrogen, continued to react for 50 minutes, added concentrated hydrochloric acid to adjust the pH to neutral, and dehydrated to obtain a modified melamine resin;

[0058] (2) Mix and stir the modified melamine resin obtained in step (1) with a surfactant and a blowing agent to obtain the first material, which is set aside;

[0059] (3) Mix and stir isooctyl mercaptopropionate and liquid curing agent evenly to obtain the second material, which is set aside;

[0060] (4) Keep stirring the first material obtained in step (2) for 2 hours, preheat to 50°C, then ad...

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Abstract

The invention discloses a preparation process of high-resilience daily melamine foam. The preparation process comprises the specific steps of: (1) adding melamine into a formaldehyde solution, heatingthe obtained mixture for a reaction so as to generate melamino-formaldehyde resin, adding polyvinyl butyral, polyester polyol and a polyether-modified polysiloxane copolymer while stirring is conducted, introducing nitrogen into the above materials, and keeping the reaction going on to obtain modified melamine resin after dehydration; (2) mixing and stirring the modified melamine resin, a surfactant and a foaming agent uniformly so as to obtain a first material for later use; (3) mixing and stirring iso-octyl 3-mercaptopropionate and a liquid curing agent evenly so as to obtain a second material for later use; (4) stirring the first material continuously, conducting preheating, then adding the second material into the first material, and keeping stirring to obtain a mixture; (5) transferring the mixture to a microwave oven for microwave foaming so as to produce the melamine foam. According to the preparation process of the high-resilience daily melamine foam, the melamine foam has theadvantages of excellent resilience performance.

Description

technical field [0001] The invention relates to a preparation process, in particular to a preparation process of melamine foamed plastics. It belongs to the technical field of material preparation. Background technique [0002] Melamine foam has excellent sound absorption performance, flame retardant performance, heat insulation performance, insulation, heat and humidity resistance stability, safety and sanitation and secondary processing performance, etc. It is a kind of melamine as the main raw material. 99.9% new foam plastic with low-density three-dimensional grid structure. Melamine foam plastics have broad application prospects in fields such as construction, transportation, vehicle manufacturing, acoustic engineering, electronic information, and object surface cleaning and decontamination. [0003] In recent years, melamine foam has been widely used in the field of daily necessities. For example, because melamine foam has excellent flame retardancy, it replaces poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/40C08J9/10C08J9/04C08L61/32
Inventor 蒋红卫
Owner JIAXING HANGXING FINE CHEM