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Method for preparing honeycomb enhanced phenolic foam composite materials

A composite material and phenolic foam technology, which is applied in the field of composite material preparation, can solve problems such as waterproof and poor flame retardancy, and achieve the effects of increasing heat insulation, simple operation process, and reducing costs

Inactive Publication Date: 2013-07-17
ARAMICORE COMPOSITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing composite materials are obtained by impregnating honeycombs with phenolic foam foaming materials and then heating and curing them separately. The composite materials still retain the cellular structure of the honeycomb, and air convection or liquid flow can still be allowed between the cells. Disadvantages such as waterproof and poor flame retardancy

Method used

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  • Method for preparing honeycomb enhanced phenolic foam composite materials
  • Method for preparing honeycomb enhanced phenolic foam composite materials
  • Method for preparing honeycomb enhanced phenolic foam composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of honeycomb reinforced phenolic foam composite material, comprising the steps of:

[0030] (1) Pour the phenolic resin foaming composition into the mold 1, so that the liquid level of the phenolic resin foaming composition in the mold 1 is kept at a consistent level. Such as Figure 3-4 As shown, the mold 1 is in the shape of an open box, and has a mold cover 2 matched with the open end of the mold 1 . The opening end of the mold 1 is provided with an outward flanging 3, and the corresponding position of the flanging 3 and the mold cover 2 is provided with a pin hole 4 for connecting and fixing the mold 1 and the mold cover 2.

[0031] (2) will be as figure 2 The shown honeycomb is put into the mold 1 vertically, and placed in the phenolic resin foaming composition, so that in each honeycomb cell of the honeycomb, the amount of the phenolic resin foaming composition is the same.

[0032] Specifically, the honeycomb is an aramid paper honeycomb,...

Embodiment 2

[0037] A preparation method of honeycomb reinforced phenolic foam composite material, the difference from Example 1 is:

[0038] In step (1), the bottom surface of the mold 1 is placed on a horizontal plane, and then the phenolic resin foaming composition is poured into the mold 1, so that the level and height of the phenolic resin foaming composition in the mold 1 can be easily maintained.

[0039] In step (2), the size of the honeycomb is 2600*1300*20mm of NH-3.67-40.

Embodiment 3

[0041] A kind of preparation method of honeycomb reinforced phenolic foam composite material, the difference with embodiment 2 is:

[0042] In step (2), the size of the honeycomb is 1000*500*20mm of 4.5-45, and the honeycomb is a glass fiber honeycomb.

[0043] It should be noted that, in Examples 1-3, the phenolic resin foaming composite material is prepared from the following raw materials in parts by weight using a common method in this industry: 100 parts of phenolic resin, 0.05-1 part of emulsifier, curing agent 0.05-1 part, 5-20 parts of foaming agent. Phenolic resin, emulsifier, curing agent, and foaming agent can be selected from the corresponding raw materials commonly used in this industry. Specifically, in Examples 1-3 of the present invention, the phenolic resins, emulsifiers, curing agents, and foaming agents selected by the inventors were all purchased from Langfang Erida Thermal Insulation Building Materials Co., Ltd., and the phenolic resins were expandable ph...

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Abstract

The invention relates to a method for preparing honeycomb enhanced phenolic foam composite materials. The method is characterized by including the steps of: (1) pouring phenolic resin foam composite into a die; (2) vertically placing a honeycomb in the phenolic resin foam composite in the die; (3) placing the die with the phenolic resin foam composite and the honeycomb in the step (2) into a baking oven at the temperature of 50-100 DEG C for foaming for 5-10h, and obtaining the honeycomb enhanced phenolic foam composite material. Via one-time soaking and heating consolidation, the method is capable of preparing the honeycomb enhanced foam composite materials with phenolic foam ingredients in the honeycomb materials and phenolic foam filled in honeycomb lattice holes, the operation procedure is extremely simple, only the die and the baking oven are utilized as equipment, so that the method has the advantages of efficiency and low cost, meanwhile, the composite material products can be guaranteed to have the advantages of good combination properties like light weight, sound insulation, heat insulation, specific strength, specific modulus, water resistance and flame retardance.

Description

technical field [0001] The invention relates to a method for preparing a composite material, in particular to a method for preparing a reinforced phenolic foam composite material. Background technique [0002] Phenolic foam has excellent characteristics such as light weight, sound insulation and heat insulation, among which the most prominent features are flame retardant, low smoke and high temperature disparity resistance; at the same time, because the foam of phenolic foam is closed-cell, it is difficult for moisture and moisture to enter, Therefore, it has the advantage of good moisture absorption resistance. However, phenolic foam also has the disadvantages of poor mechanical properties such as shear strength and compressive strength. [0003] Honeycomb materials have excellent characteristics such as high specific strength and specific modulus, but there are also many disadvantages. For example, because the honeycomb is an open-pore structure, the air can convect in th...

Claims

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Application Information

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IPC IPC(8): B29C70/42B29K61/04B29K105/04
Inventor 穆举杰
Owner ARAMICORE COMPOSITE
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