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Polyetheramine toughened phenol formaldehyde foam and preparation method thereof

A phenolic foam and polyetheramine technology, applied in the field of phenolic foam, can solve the problems of brittleness, easy slag removal and low strength of phenolic foam, and achieve the effects of overcoming easy slag removal, low thermal conductivity and simple production process and conditions

Inactive Publication Date: 2012-12-12
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] One of the objectives of the present invention is to provide a polyetheramine toughened phenolic foam and its preparation method in order to solve the problems of existing phenolic foams which are brittle, low in strength and easy to drop slag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A polyetheramine toughened phenolic foam, its composition and content are as follows:

[0043] Polyetheramine modified phenolic resin 50g

[0044] Surfactant 3g

[0045] Foaming agent 3g

[0046] Curing agent 4g

[0047] The polyetheramine modified phenolic resin described therein is prepared by the method comprising the following steps:

[0048] (1) Add 90g of phenol and 56g of paraformaldehyde into a three-necked flask, add 9g of 10% sodium hydroxide solution, heat up to 60-80°C under stirring conditions, and keep warm for 30-60 minutes to obtain reaction solution A;

[0049] (2) Add 10 g of polyetheramine T-2000 to the reaction solution A obtained in step (1) and heat it up to 85-95°C, keep it warm for 60-90 minutes, stop the reaction, and cool to room temperature to obtain reaction solution B;

[0050] (3), adding phosphoric acid dropwise to the reaction solution B obtained in step (2) to control the pH value to 6.5 to 7.5, to obtain 163 g of polyetheramine modi...

Embodiment 2

[0063] A polyetheramine toughened phenolic foam, its composition and content are as follows:

[0064] Polyetheramine modified phenolic resin 50g

[0065] Surfactant 5g

[0066] Foaming agent 7g

[0067] Curing agent 9g

[0068] The polyetheramine modified phenolic resin described therein is prepared by the method comprising the following steps:

[0069] (1) Add 80g of phenol and 66g of paraformaldehyde into a three-necked flask, and add 7g of 10% sodium hydroxide solution, heat up to 60-80°C under stirring conditions, and keep warm for 30-60 minutes to obtain reaction solution A;

[0070] (2) Add 15g of polyetheramine T-5000 to the reaction liquid A obtained in step (1) and raise the temperature to 85-95°C, keep the temperature for 60-90 minutes, stop the reaction, and cool to room temperature to obtain the reaction liquid B;

[0071] (3), adding phosphoric acid dropwise to the reaction solution B obtained in step (2) to control the pH value to 6.5 to 7.5, to obtain 164 g ...

Embodiment 3

[0084] A polyetheramine toughened phenolic foam, its composition and content are as follows:

[0085] Polyetheramine modified phenolic resin 50g

[0086] Surfactant 2g

[0087] Foaming agent 5g

[0088] Curing agent 7g

[0089] The polyetheramine modified phenolic resin described therein is prepared by the method comprising the following steps:

[0090] (1) Add 90g of phenol and 50g of paraformaldehyde into a three-necked flask, and add 12g of 10% sodium hydroxide solution, heat up to 60-80°C under stirring conditions, and keep warm for 30-60 minutes to obtain reaction solution A;

[0091] (2) Add 4g of polyetheramine D-2000 to the reaction liquid A obtained in step (1) and raise the temperature to 85-95°C, keep the temperature for 60-90 minutes, stop the reaction, and cool to room temperature to obtain the reaction liquid B;

[0092] (3), adding phosphoric acid dropwise to the reaction solution B obtained in step (2) to control the pH value to 6.5-7.5, to obtain 152 g of ...

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Abstract

The invention discloses a polyetheramine toughened phenol formaldehyde foam and a preparation method thereof. The polyetheramine toughened phenol formaldehyde foam comprises the following components in parts by weight: 100 parts of polyetheramine modified phenol formaldehyde resin, 3-10 parts of surfactant, 5-15 parts of foaming agent and 5-20 parts of curing agent. The preparation method comprises the following steps: after sequentially adding the curing agent, surfactant and foaming agent into the polyetheramine modified phenol formaldehyde resin, stirring at high speed, injecting into a mold, and heating to foam and form, thereby obtaining the polyetheramine toughened phenol formaldehyde foam, which has the advantages of less shedding and high toughness and is a heat insulating material with excellent properties.

Description

technical field [0001] The invention relates to a phenolic foam, in particular to a polyetheramine toughened phenolic foam and a preparation method thereof. Background technique [0002] Foam plastics are used more and more in the field of heat insulation and heat preservation due to their low thermal conductivity, light weight, and convenient construction. The disadvantages of combustion, large amount of smoke, high toxicity, and low heat-resistant temperature have greatly restricted its application in practical applications, especially in ships and buildings. [0003] Phenolic Foam (PF for short) is a material with excellent performance in fire prevention, heat insulation, sound insulation, light weight and energy saving. , polyurethane (PU), polyethylene (PE), etc., which are more than twice as high as traditional thermal insulation materials such as mineral wool, light cork, perlite, glass wool, etc. flammability. Phenolic foam has the advantages of low price, good f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/14C08K3/32C08K5/42C08K3/38C08G8/28C08J9/14
Inventor 黄剑清潘安健
Owner SHANGHAI INST OF TECH
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