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
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[0028] Example 1:
[0029] A method for preparing honeycomb reinforced phenolic foam composite material includes the following steps:
[0030] (1) Pour the phenolic resin foaming composition into the mold 1 so that the phenolic resin foaming composition maintains the same level of liquid level in the mold 1. Such as Figure 3-4 As shown, the mold 1 is in the shape of an open box with a mold cover 2 that fits with the open end of the mold 1. The open end of the mold 1 is provided with an outward flange 3, and corresponding positions of the flange 3 and the mold cover 2 are 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 illustrated honeycomb is placed vertically into the mold 1 and placed into the phenolic resin foaming composition, so that the amount of the phenolic resin foaming composition is the same in each cell of the honeycomb.
[0032] Specifically, the honeycomb is an aramid paper honeycomb, the cell...
Example Embodiment
[0036] Example 2:
[0037] A preparation method of honeycomb reinforced phenolic foam composite material, which is different from Example 1 in:
[0038] In step (1), the bottom surface of the mold 1 is placed on a horizontal surface, and then the phenolic resin foaming composition is poured into the mold 1, so that the phenolic resin foaming composition can be easily maintained at the same level in the mold 1.
[0039] In step (2), the specification of the honeycomb is 2600*1300*20mm of NH-3.67-40.
Example Embodiment
[0040] Example 3:
[0041] A preparation method of honeycomb reinforced phenolic foam composite material, which is different from Example 2 in:
[0042] In step (2), the size of the honeycomb is 4.5-45 1000*500*20mm, and the honeycomb is a glass fiber honeycomb.
[0043] It should be noted that in Examples 1-3, the phenolic resin foaming composition is prepared from the following parts by weight of raw materials using a common method in this industry: 100 parts of phenolic resin, 0.05-1 part of emulsifier, and curing agent 0.05-1 part, 5-20 parts foaming agent. Phenolic resin, emulsifier, curing agent, foaming agent can be selected from the corresponding raw materials commonly used in the industry. Specifically, in Examples 1-3 of the present invention, the phenolic resin, emulsifier, curing agent, and foaming agent selected by the inventors were all purchased from Langfang Yiruida Thermal Insulation Building Materials Co., Ltd., and the phenolic resin was an expandable phenolic re...
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