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Method for forming foam fireproof layer

A foaming and refractory layer technology, applied in the field of foaming refractory layer formation, can solve problems such as undeveloped ones, and achieve the effects of excellent workability and excellent fire resistance.

Active Publication Date: 2008-01-30
SK KAKEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] As mentioned above, although there is a demand for the development of a construction method that is not only easy to construct, but also exhibits excellent fire resistance performance on substrates with curved surfaces, it has not yet been developed.

Method used

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  • Method for forming foam fireproof layer
  • Method for forming foam fireproof layer
  • Method for forming foam fireproof layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0089] Examples and comparative examples are described below to further clarify the characteristics of the present invention. However, the present invention is not limited to these Examples.

[0090] (Manufacture of foamable refractory sheet)

[0091] (1) Foamable refractory sheet A

[0092] A raw material mixture containing 100 parts by weight of acrylic resin, 75 parts by weight of melamine, 75 parts by weight of dipentaerythritol, 370 parts by weight of ammonium polyphosphate, and 105 parts by weight of titanium oxide was fully kneaded with a kneader. Then, the kneaded product was rolled with a calender roll together with the fibrous sheet, thereby producing a foamable fireproof sheet A having a film thickness of 2 mm.

[0093] In addition, as the above-mentioned fibrous sheet, a sheet of nonwoven fabric in which polyester fibers were laminated on a glass mesh (thickness: 0.18 mm, mesh spacing: 10 mm×10 mm) was used.

[0094] (2) Foamable refractory sheet B

[0095] A r...

Embodiment 1

[0105] As the base material, a square steel pipe (150 mm×150 mm in cross section, 9 mm in thickness, and 1200 mm in length) subjected to antirust coating treatment was used. After the acrylic resin adhesive is fully coated on the base material with a roller, three foamable fire-resistant sheets A obtained by the above-mentioned method, as shown in Figure 2, are attached to each other at the ends of the sheets so that the butt joint The seam width is 2mm. At this time, the foamable fire-resistant sheet A is pasted so that the surface on the side of the fibrous sheet is bonded to the base material. In addition, a moisture-curable polyurethane-based sealing material is filled with a spatula at the joint of the butt joint.

[0106] Then, brush the foamable refractory paint A on the entire outer peripheral surface (including the butt joint) pasted with the foamable fireproof sheet A, make the dry film thickness 0.5mm, and maintain and dry for 7 days.

[0107] A heating test was p...

Embodiment 2

[0126] Except having used the foamable fireproof sheet B as a foamable fireproof sheet, the test body was produced similarly to Example 1, and the heating test was performed.

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Abstract

The present invention relates to a method for forming a foamable refractory layer that is not only easy to construct but also exhibits excellent refractory performance. A method for forming a foamable refractory layer, which is used to form a foamable refractory layer, is characterized in that it includes: (1) using one or more than two foamable refractory sheets, and making the ends of the above-mentioned sheets Parts are butted against each other, and the first step of forming a single-layer or multi-layer sheet layer on the base material at the same time; The second process of applying foamable refractory coating on top.

Description

technical field [0001] The present invention relates to a method for forming a foamable refractory layer. Background technique [0002] When structures such as buildings and civil engineering structures are exposed to high temperatures due to fire or the like, there is a problem that the mechanical strength of steel bars, concrete, etc., which are base materials of these structures, decreases rapidly. [0003] In response to this problem, for example, a foamable fire-resistant sheet has been proposed which delays the temperature rise of the base material and temporarily suppresses a decrease in the physical strength of the base material by forming a carbonized layer by foaming at a high temperature such as a fire. (Japanese Patent Laid-Open No. 8-60763). [0004] Advantages of such a foamable refractory sheet include the ability to form a thinner film thickness and ease of film thickness control during construction, compared with common refractory covering materials. Compa...

Claims

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Application Information

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IPC IPC(8): E04B1/94
CPCF16L59/20E04F13/0733E04B1/94
Inventor 轻贺英人山本将贵
Owner SK KAKEN CO LTD