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Composite reinforced pnenolic aldehyde foam insulating board and its preparation method

A technology of phenolic foam and thermal insulation board, which is applied in thermal insulation, pipeline protection, mechanical equipment, etc. It can solve the problems of insufficient board strength, easy pulverization, and low bonding strength between the board and the surface layer, so as to improve the physical strength and adhesion. The effect of improving the connection performance and expanding the application field

Inactive Publication Date: 2008-03-19
SHANGHAI HAOHAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As we all know, phenolic foam is a brittle foam material. This brittleness is reflected in the composite phenolic sheet, which causes two shortcomings of the sheet: one is that the strength of the sheet is not large enough, and it is easy to pulverize under the damage of external force; the other is that the sheet The bonding strength with the surface layer is not high

Method used

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  • Composite reinforced pnenolic aldehyde foam insulating board and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0037] The continuous foam molding process is adopted to prepare composite reinforced phenolic foam insulation boards with a thickness of 20mm. The surface layer material is glass fiber veneer felt, model EMS-50-1250, the performance is tested, and the performance is listed in Table 2. It can be seen that, compared with Comparative Example 1, the compression and bending properties of the plate are greatly improved.

Embodiment 4

[0039] On the basis of the composite reinforced phenolic foam insulation board prepared in Example 3, another layer material, 0.07mm embossed aluminum foil, was compounded, and neoprene was used as the composite adhesive to obtain a new type of composite reinforced phenolic foam insulation board. Test performance, the performance is listed in Table 2. It can be seen that compared with Comparative Example 2, the compression and bending properties of the plate and the adhesive force of the aluminum foil are greatly improved.

Embodiment 5

[0041] On the basis of the composite reinforced phenolic foam insulation board prepared in Example 3, another layer material, 0.03mm embossed aluminum foil, was compounded, and neoprene was used as the composite adhesive to obtain a new type of composite reinforced phenolic foam insulation board. Test performance, the performance is listed in Table 2. It can be seen that compared with Comparative Example 2, the compression and bending properties of the plate and the adhesive force of the aluminum foil are greatly improved.

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Abstract

The invention provides a composite type reinforced phenol formaldehyde foam insulating sheet and a preparing method thereof. The insulating sheet comprises an upper surface layer (1), a middle layer (2) and a lower surface layer (3) which are mutually combined in sequence, the materials of the middle layer (2) are phenol formaldehyde foams, and the upper surface layer (1) and the lower surface layer (3) comprise a reinforced layer (101) made of fiber mat. The composite type reinforced phenol formaldehyde foam insulating sheet of the invention greatly improves the physical strength and the adhering performance through combining fiber reinforced materials on the surface of the phenol formaldehyde foam sheet, and widens the application area of the phenol formaldehyde foam insulating sheet.

Description

technical field [0001] The invention relates to a foam insulation board, more specifically to a phenolic foam insulation board. technical background [0002] Phenolic foam insulation panels have developed rapidly in the domestic market in recent years thanks to their unique high flame-retardant properties. In particular, the phenolic foam sheet with a thickness of about 20mm is compounded with embossed aluminum foil with a thickness of 0.07mm on its surface. It is used as a building material in air-conditioning ventilation ducts and is well received by the market. [0003] For example, Chinese patent 02273147.4 discloses a composite phenolic foam insulation board, and Chinese patent 03106509.0 discloses a continuous manufacturing method for phenolic foam composite boards. [0004] The manufacturing methods of conventional phenolic foam boards can generally be divided into two categories according to their processes: discontinuous production and continuous production. [00...

Claims

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Application Information

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IPC IPC(8): F16L59/02B32B5/18
Inventor 刘远中陈士景童伯健徐强
Owner SHANGHAI HAOHAI CHEM
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