Cardanol modified phenolic aldehyde foam and preparation method thereof

A technology of phenolic foam and cardanol, which is applied in the field of phenolic foam and the preparation of the material, can solve the problems of difficult foaming of phenolic foam, high viscosity of phenolic resin, poor toughness of phenolic foam, etc., achieve low water absorption, improve toughness, reduce The effect of water absorption

Inactive Publication Date: 2013-04-03
北京傲德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

[0009] The invention provides a cardanol-modified phenolic foam and a preparation method thereof. It is necessary to solve the technical problems that the phenolic resin produced by the direct reaction of cardanol has a high viscosity and the phenolic foam is difficult to foam; Technical problems with high formaldehyde content

Method used

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  • Cardanol modified phenolic aldehyde foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment one, this cardanol modified phenolic foam, it is made by the proportioning of following raw materials by weight:

[0049]Cardanol modified phenolic resin 100 parts;

[0050] Surfactant 4 parts;

[0051] Foaming agent 6 parts;

[0052] 15 parts of curing agent;

[0053] Each raw material proportioning of described cardanol modified phenolic resin is as follows by weight:

[0054] Cardanol 200 parts;

[0055] 1400 parts of phenol;

[0056] 140 parts of liquid formaldehyde;

[0057] 840 parts of paraformaldehyde;

[0058] 175 parts of methylol urea resin.

[0059]

Embodiment 2

[0060] Embodiment two, this cardanol modified phenolic foam, it is made by the following raw material proportioning by weight:

[0061] Cardanol modified phenolic resin 100 parts;

[0062] 7 parts of surfactant;

[0063] 10 parts of blowing agent;

[0064] 20 parts of curing agent;

[0065] Each raw material proportioning of described cardanol modified phenolic resin is as follows by weight:

[0066] Cardanol 350 parts;

[0067] 1700 parts of phenol;

[0068] 230 parts of liquid formaldehyde;

[0069] 870 parts of paraformaldehyde;

[0070] 200 parts of methylol urea resin.

[0071]

Embodiment 3

[0072] Embodiment three, this cardanol modified phenolic foam, it is made by the following raw material proportioning by weight:

[0073] Cardanol modified phenolic resin 100 parts;

[0074] 5 parts of surfactant;

[0075] Foaming agent 8 parts;

[0076] 17 parts of curing agent;

[0077] Each raw material proportioning of described cardanol modified phenolic resin is as follows by weight:

[0078] Cardanol 165 parts;

[0079] 1300 parts of phenol;

[0080] 130 parts of liquid formaldehyde;

[0081] 830 parts of paraformaldehyde;

[0082] 180 parts of methylol urea resin.

[0083]

[0084] The surfactant is Tween-80, Tween-60, EL-40 or PEG-25.

[0085] The blowing agent is any one or a mixture of n-pentane, cyclopentane or petroleum ether.

[0086] The blowing agent is composed of 50% n-pentane and 50% cyclopentane by mass percentage. .

[0087] The curing agent is any one or a mixture of p-toluenesulfonic acid, dimethylbenzenesulfonic acid, phenolsulfonic acid, ph...

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Abstract

The invention discloses cardanol modified phenolic aldehyde foam and a preparation method of the cardanol modified phenolic aldehyde foam. The cardanol modified phenolic aldehyde foam is prepared by the following materials in parts by weight: 100 parts of a cardanol modified phenolic aldehyde resin, 4-7 parts of a surfactant, 6-10 parts of a foaming agent and 15-20 parts of a curing agent, wherein the cardanol modified phenolic aldehyde resin is a phenolic aldehyde resin obtained by performing a first step of reaction on cardanol and liquid formaldehyde under a basic catalyst condition, then, adding phenol and paraformaldehyde, and performing a second step of reaction under the basic catalyst condition, and at last, adding a hydroxymethylurea resin to react. According to the preparation method, on the basis of not affecting the heat conductivity coefficient and high fire resistance of the phenolic aldehyde foam, the density, water absorption and free formaldehyde of phenolic aldehyde foam plastic are reduced by the cardanol, the tenacity of phenolic foam is improved, and meanwhile, renewable plant resources are adequately used. The cardanol modified phenolic aldehyde foam can be used as a building heat-insulation, heat-preservation and fire-proof material, and is a product with good market prospect.

Description

technical field [0001] The invention relates to a phenolic foam plastic and a preparation method of the material. Background technique [0002] Due to the excellent flame retardancy and thermal insulation properties of phenolic foam, phenolic foam has been used in batches in the construction and industrial fields. [0003] Phenolic foam usually uses phenolic resin, surfactant, foaming agent, and curing agent to mix evenly and then heat and foam. The formed phenolic foam usually has defects such as high density, high brittleness, and high water absorption. Usually, the phenolic foam used for phenolic foam foaming Resins need to be modified with low molecular weight flexible materials to overcome the deficiencies of phenolic foams. The flexible materials of modified phenolic foam generally include: polyethylene glycol, polypropylene glycol, polyvinyl alcohol, phthalate, low molecular weight polyester, etc., and the phenolic foam prepared by foaming modified phenolic resin, I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/14C08G8/28C08G12/12C08J9/14
Inventor 孙垂海朱佑平陈硕
Owner 北京傲德新材料科技有限公司
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