阅读说明：本技术 一种三聚氰胺泡沫的改性方法 (Modification method of melamine foam ) 是由 车东江 史杨梅 于 2019-11-06 设计创作，主要内容包括：本发明提供一种三聚氰胺泡沫的改性方法,涉及泡沫材料改性技术领域。该三聚氰胺泡沫的改性方法,所述改性三聚氰胺泡沫由以下重量份的原料组成：三聚氰胺40-50份、甲醛20-30份、聚乙烯醇4-5份、硫酸铜1-2份、氯化锌1-2份、硬脂酸铝2-3份、硅烷偶联剂3-4份、稳定剂2-4份、抗氧化剂1-3份、增塑剂3-5份、交联剂5-6份、发泡剂6-8份。该三聚氰胺泡沫的改性方法,通过对三聚氰胺泡沫的改性工艺进行优化,同时合理的增加了部分添加剂,有效的解决了三聚氰胺泡沫硬度大、易碎、掉渣、强度低等问题,使得三聚氰胺泡沫性能的提升效果明显,从而进一步提高了三聚氰胺泡沫材料的质量。(The invention provides a modification method of melamine foam, and relates to the technical field of foam material modification. The modified melamine foam is prepared from the following raw materials in parts by weight: 40-50 parts of melamine, 20-30 parts of formaldehyde, 4-5 parts of polyvinyl alcohol, 1-2 parts of copper sulfate, 1-2 parts of zinc chloride, 2-3 parts of aluminum stearate, 3-4 parts of silane coupling agent, 2-4 parts of stabilizer, 1-3 parts of antioxidant, 3-5 parts of plasticizer, 5-6 parts of cross-linking agent and 6-8 parts of foaming agent. According to the modification method of the melamine foam, the modification process of the melamine foam is optimized, meanwhile, part of additives are reasonably added, the problems that the melamine foam is high in hardness, fragile, easy to break, low in strength and the like are effectively solved, the improvement effect of the performance of the melamine foam is obvious, and the quality of the melamine foam material is further improved.)

1. A modified melamine foam characterized by: the composite material comprises the following raw materials in parts by weight: 40-50 parts of melamine, 20-30 parts of formaldehyde, 4-5 parts of polyvinyl alcohol, 1-2 parts of copper sulfate, 1-2 parts of zinc chloride, 2-3 parts of aluminum stearate, 3-4 parts of silane coupling agent, 2-4 parts of stabilizer, 1-3 parts of antioxidant, 3-5 parts of plasticizer, 5-6 parts of cross-linking agent and 6-8 parts of foaming agent.

2. A modified melamine foam according to claim 1, wherein: the stabilizer is selected from polyphosphoric acid or boric acid.

3. A modified melamine foam according to claim 1, wherein: the foaming agent is one or more of calcium carbonate, magnesium carbonate and sodium bicarbonate.

4. A modified melamine foam according to claim 1, wherein: the antioxidant is one or more of butyl hydroxy anisol, propyl gallate and tert-butyl hydroquinone.

5. A modified melamine foam according to claim 1, wherein: the composition is characterized by comprising the following raw materials in parts by weight: 40 parts of melamine, 20 parts of formaldehyde, 4 parts of polyvinyl alcohol, 1 part of copper sulfate, 1 part of zinc chloride, 2 parts of aluminum stearate, 3 parts of silane coupling agent, 2 parts of stabilizer, 1 part of antioxidant, 3 parts of plasticizer, 5 parts of crosslinking agent and 6 parts of foaming agent.

6. A modified melamine foam according to claim 1, wherein: the composition is characterized by comprising the following raw materials in parts by weight: 45 parts of melamine, 25 parts of formaldehyde, 4.5 parts of polyvinyl alcohol, 1.5 parts of copper sulfate, 1.5 parts of zinc chloride, 2.5 parts of aluminum stearate, 3.5 parts of silane coupling agent, 3 parts of stabilizer, 2 parts of antioxidant, 4 parts of plasticizer, 5.5 parts of cross-linking agent and 7 parts of foaming agent.

7. A modified melamine foam according to claim 1, wherein: the composition is characterized by comprising the following raw materials in parts by weight: 50 parts of melamine, 30 parts of formaldehyde, 5 parts of polyvinyl alcohol, 2 parts of copper sulfate, 2 parts of zinc chloride, 3 parts of aluminum stearate, 4 parts of silane coupling agent, 4 parts of stabilizer, 3 parts of antioxidant, 5 parts of plasticizer, 6 parts of crosslinking agent and 8 parts of foaming agent.

8. A modification method of melamine foam is characterized in that: the method comprises the following steps:

1) preparing melamine, formaldehyde, polyvinyl alcohol, copper sulfate, zinc chloride, aluminum stearate, a silane coupling agent, a stabilizer, an antioxidant, a plasticizer, a crosslinking agent and a foaming agent;

2) adding formaldehyde and polyvinyl alcohol into a reaction kettle, simultaneously adding an alkaline solution into the reaction kettle to adjust the pH value to be 8-9, controlling the temperature in the reaction kettle to be 70-80 ℃, and stirring for 10-15 minutes to obtain a mixture A;

3) adding melamine, copper sulfate, zinc chloride, aluminum stearate and a silane coupling agent into the mixture A, simultaneously adding an acidic solution into a reaction kettle to adjust the pH value to be 6-7, heating the reaction kettle to 80-90 ℃, and uniformly stirring for 30-40 minutes to obtain a mixture B;

4) adding a stabilizer, an antioxidant and a plasticizer into the mixture B, stirring for 5-10 minutes at the temperature of 65-75 ℃ in a reaction kettle to obtain a mixture C;

5) preparing a mould, heating the mould to 50-60 ℃, immediately injecting the obtained mixture C into the mould, adding a cross-linking agent and a foaming agent into the mixture C, placing the mould at 55-75 ℃ for drying treatment, and annealing treatment to obtain the modified melamine foam.

Technical Field

The invention relates to the technical field of foam material modification, in particular to a modification method of melamine foam.

Background

The melamine foam is a novel high-temperature-resistant flame-retardant material, has excellent high-temperature resistance and flame retardance, the melamine formaldehyde resin foam is a novel foam with high aperture ratio, has low density, good machining performance, excellent sound absorption and excellent flame retardance, but the pure melamine formaldehyde resin is a thermosetting polymer, and the melamine foam material is widely applied to various fields and has good effect.

The melamine foam has a three-dimensional net-shaped cross-linking structure, and molecules contain a large amount of rigid triazine rings, so that the melamine formaldehyde resin foam has the characteristics of high hardness, fragility, slag falling, low strength and the like, and the melamine foam is modified in the using process.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a modification method of melamine foam, and solves the problems that the existing modification method of melamine foam is too simple, the improvement effect on the performance of melamine foam is not obvious, and the quality of melamine foam material still needs to be further improved.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the modified melamine foam comprises the following raw materials in parts by weight: 40-50 parts of melamine, 20-30 parts of formaldehyde, 4-5 parts of polyvinyl alcohol, 1-2 parts of copper sulfate, 1-2 parts of zinc chloride, 2-3 parts of aluminum stearate, 3-4 parts of silane coupling agent, 2-4 parts of stabilizer, 1-3 parts of antioxidant, 3-5 parts of plasticizer, 5-6 parts of cross-linking agent and 6-8 parts of foaming agent.

Preferably, the stabilizer is selected from polyphosphoric acid or boric acid.

Preferably, the foaming agent is one or more of calcium carbonate, magnesium carbonate and sodium bicarbonate.

Preferably, the antioxidant is one or more of butyl hydroxy anisole, propyl gallate and tert-butyl hydroquinone.

Preferably, the modified melamine foam consists of the following raw materials in parts by weight: 40 parts of melamine, 20 parts of formaldehyde, 4 parts of polyvinyl alcohol, 1 part of copper sulfate, 1 part of zinc chloride, 2 parts of aluminum stearate, 3 parts of silane coupling agent, 2 parts of stabilizer, 1 part of antioxidant, 3 parts of plasticizer, 5 parts of crosslinking agent and 6 parts of foaming agent.

Preferably, the modified melamine foam consists of the following raw materials in parts by weight: 45 parts of melamine, 25 parts of formaldehyde, 4.5 parts of polyvinyl alcohol, 1.5 parts of copper sulfate, 1.5 parts of zinc chloride, 2.5 parts of aluminum stearate, 3.5 parts of silane coupling agent, 3 parts of stabilizer, 2 parts of antioxidant, 4 parts of plasticizer, 5.5 parts of cross-linking agent and 7 parts of foaming agent.

Preferably, the modified melamine foam consists of the following raw materials in parts by weight: 50 parts of melamine, 30 parts of formaldehyde, 5 parts of polyvinyl alcohol, 2 parts of copper sulfate, 2 parts of zinc chloride, 3 parts of aluminum stearate, 4 parts of silane coupling agent, 4 parts of stabilizer, 3 parts of antioxidant, 5 parts of plasticizer, 6 parts of crosslinking agent and 8 parts of foaming agent.

A method of modifying melamine foam comprising the steps of:

1) preparing melamine, formaldehyde, polyvinyl alcohol, copper sulfate, zinc chloride, aluminum stearate, a silane coupling agent, a stabilizer, an antioxidant, a plasticizer, a crosslinking agent and a foaming agent;

2) adding formaldehyde and polyvinyl alcohol into a reaction kettle, simultaneously adding an alkaline solution into the reaction kettle to adjust the pH value to be 8-9, controlling the temperature in the reaction kettle to be 70-80 ℃, and stirring for 10-15 minutes to obtain a mixture A;

3) adding melamine, copper sulfate, zinc chloride, aluminum stearate and a silane coupling agent into the mixture A, simultaneously adding an acidic solution into a reaction kettle to adjust the pH value to be 6-7, heating the reaction kettle to 80-90 ℃, and uniformly stirring for 30-40 minutes to obtain a mixture B;

4) adding a stabilizer, an antioxidant and a plasticizer into the mixture B, stirring for 5-10 minutes at the temperature of 65-75 ℃ in a reaction kettle to obtain a mixture C;

5) preparing a mould, heating the mould to 50-60 ℃, immediately injecting the obtained mixture C into the mould, adding a cross-linking agent and a foaming agent into the mixture C, placing the mould at 55-75 ℃ for drying treatment, and annealing treatment to obtain the modified melamine foam.

(III) advantageous effects

The invention provides a modification method of melamine foam. The method has the following beneficial effects:

according to the modification method of the melamine foam, the modification process of the melamine foam is optimized, meanwhile, part of additives are reasonably added, the problems that the melamine foam is high in hardness, fragile, easy to break, low in strength and the like are effectively solved, the improvement effect of the performance of the melamine foam is obvious, and the quality of the melamine foam material is further improved.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.