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Novel high-resilience load-bearing foam material and preparation method thereof

A foam material and high-resilience technology, which is applied in the field of new high-resilience load-bearing foam materials and their preparation, can solve the problems of compression set and poor resistance to repeated indentation fatigue, and achieve good repeated indentation fatigue and openness. The effect of high porosity and delicate hand feeling

Active Publication Date: 2016-09-21
成都美讷敏新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, melamine foam also has deficiencies. Because melamine foam is a thermosetting foam, its three-dimensional network structure is rigid, and its compression set and fatigue resistance to repeated depression are poor, thus limiting its application as a high-resilience load-bearing foam.

Method used

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  • Novel high-resilience load-bearing foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare novel high-resilience load-bearing foam material according to the following steps:

[0029] (1) Preparation of expandable melamine formaldehyde resin: In a 5L stirred reactor, add 1023g of water, 1350g of paraformaldehyde, 1890g of melamine, and 106g of sodium metabisulfite, adjust the pH to 8.5-9 with triethanolamine, and react at a constant temperature of 95°C for 112min. The obtained solid content is 76.5%, and the methylol content is 22.7% of resin gross weight expandable melamine formaldehyde resin, and this resin has certain reactivity;

[0030] (2) Preparation of expandable melamine formaldehyde resin-elastomer emulsion: in a constant temperature water bath at 30°C, take 1000g of expandable melamine formaldehyde resin prepared in Example 1, add 50g of liquid nitrile rubber, fatty alcohol polyoxyethylene 14g of sodium ether sulfate, 6g of alkyl polyoxyethylene ether (AEO-9), 10g of aluminum oxide, 1g of bis-tert-butylperoxycumene, and 40g of water were uni...

Embodiment 2

[0036] Prepare novel high-resilience load-bearing foam material according to the following steps:

[0037] (1) Preparation of expandable melamine formaldehyde resin: In a 5L stirred reactor, add 1023g of water, 1350g of paraformaldehyde, 1890g of melamine, and 106g of sodium metabisulfite, adjust the pH to 8.5-9 with triethanolamine, and react at a constant temperature of 95°C for 112min. The obtained solid content is 76.5%, and the methylol content is 22.7% of resin gross weight expandable melamine formaldehyde resin, and this resin has certain reactivity;

[0038] (2) Preparation of expandable melamine formaldehyde resin-elastomer emulsion: In a constant temperature water bath at 30°C, take 1000g of expandable melamine formaldehyde resin prepared in Example 1, add 100g of polyurethane elastomer, dodecylbenzenesulfonate Sodium phosphate 15g, octylphenol polyoxyethylene ether (OP-10) 4g, silicon dioxide 5g, dicumyl peroxide 2g, water 30g, stir and mix evenly through a powerful...

Embodiment 3

[0044] Prepare novel high-resilience load-bearing foam material according to the following steps:

[0045] (1) Preparation of expandable melamine formaldehyde resin: In a 5L stirred reactor, add 1023g of water, 1350g of paraformaldehyde, 1890g of melamine, and 106g of sodium metabisulfite, adjust the pH to 8.5-9 with triethanolamine, and react at a constant temperature of 95°C for 112min. The obtained solid content is 76.5%, and the methylol content is 22.7% of resin gross weight expandable melamine formaldehyde resin, and this resin has certain reactivity;

[0046] (2) Preparation of expandable melamine formaldehyde resin-elastomer emulsion: in a constant temperature water bath at 30°C, take 1000g of expandable melamine formaldehyde resin prepared in Example 1, add 80g of liquid silicone rubber, dodecylbenzenesulfonate Sodium phosphate 18g, alkyl polyoxyethylene ether (AEO-9) 2g, white carbon black 15g, di-tert-butyl peroxide 2g, water 20g, mix evenly through the high-speed s...

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Abstract

The invention discloses a novel high-resilience load-bearing foam material. The novel high-resilience load-bearing foam material is prepared from raw materials as follows: expandable melamino-formaldehyde resin, elastomer rubber or resin, a surfactant, a nucleating agent, a foaming agent and a vulcanizing agent. The invention further discloses a preparation method of the novel high-resilience load-bearing foam material. The preparation method comprises the following steps: the expandable melamino-formaldehyde resin is prepared; the elastomer rubber or resin, the surfactant, the vulcanizing agent and the nucleating agent are added, and an expandable melamino-formaldehyde resin-elastomer emulsion is prepared; the foaming agent and an acid catalyst are added, and a foaming solution is prepared; micorwave foaming and crosslinking are performed; high-temperature drying and curing are performed; quenching is performed at the normal temperature, and the novel high-resilience load-bearing foam material is obtained. The novel high-resilience load-bearing foam material has good flame retardancy, thermal stability, shock resistance and flexibility, high resilience and high indentation ratio, high porosity, high elasticity and better compression set resistance and repeated indentation fatigue performance than common melamine foam and touches fine.

Description

technical field [0001] The invention relates to a foam material and a preparation method thereof, in particular to a novel high-resilience load-bearing foam material based on melamine with high elasticity and a preparation method thereof. Background technique [0002] High-resilience load-bearing foam is widely used in furniture industry, transportation industry, toy industry, sports industry and other industrial fields. Its product forms mainly include sofas, cushions, mattresses, office seats, motorcycles, automobiles, trains, Aircraft headrests, backrests, seats, various stuffed toys, massage equipment accessories, etc. [0003] The traditional high-resilience load-bearing foam is made of highly reactive polyether polyol, polymer polyol and isocyanate or modified isocyanate. The product has good mechanical properties, but its flame retardancy is not good. In recent years, with the frequent fires in large buildings and entertainment venues, the shortcomings of some flamma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/28C08L9/02C08L75/04C08L83/04C08L71/02C08K5/14C08K3/22C08K3/36C08K5/42C08G12/32C08J9/14
CPCC08G12/32C08J9/141C08J9/147C08J2203/14C08J2203/142C08J2361/28C08J2409/02C08J2475/04C08J2483/04C08L61/28C08L2201/02C08L2201/08C08L2203/14C08L2205/03C08L2205/035C08L9/02C08L71/02C08K5/14C08K2003/2227C08L75/04C08K5/42C08K3/36C08L83/04
Inventor 苟航叶锐刘铁苏华
Owner 成都美讷敏新材料科技有限公司
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