JPS62227729A - Heat insulating material - Google Patents

Abstract

PURPOSE:To obtain heat insulating material, which has favorable heat insulating property and can efficiently be filled into heat insulation-starved part around a widow frame, a door frame or the like by a method wherein second expanded plastic, the expanded cells of which are not buckled, is dispersed in base material consisting of first expanded plastic, at least a part of the expanded cells of which are buckled. CONSTITUTION:Heat insulating material to provide in heat insulation-starved part consists of first expanded plastic 4, at least a part of the expanded cells of which are buckled, and second expanded plastic 5, the expanded cells of which are not buckled. In addition, the second expanded plastic is kept dispersed in the first expanded plastic in such a manner that the buckled first expanded plastic 4 fills the gaps among the particles of the second expanded plastic 5 so as to bond the particles with one another. As the first expanded plastic, phenol foam with a density of 15-30kg/m<3>, urea foam with a density of 5-15kg/m<3>, urethane foam with a density of 10-30kg/m<3> or the like is employed.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a heat insulating material that is particularly preferably used for providing insulation in areas where it is difficult to provide heat insulating materials using normal methods, such as around windows and doors, in houses and the like. .

Technical background of the invention and its problems In order to provide comfort to the living space and save on heating costs, especially in winter, the insulation method is widely used in which a heat insulating material is installed on the outer wall surface that separates the indoor and outdoor areas of a residence. It is.

Conventionally known methods for insulating homes like this include installing plate-shaped insulation materials made of foamed plastics such as urethane foam, polystyrene foam, and phenol foam on the indoor side of the wall that separates the indoors and outdoors. There is.

However, with this construction method, it is difficult to provide heat insulating material around window frames or door frames, for example, due to the construction process and other reasons. This is because window frames and other items are installed after the concrete frame work, and a space (gap) is required between the frame and the frame for installation, and the area around the window frame or door is not drawn. The reason for this is that it was difficult to fill this part with plate-shaped heat insulating material because of the complicated structure, and this part was often left unfilled.

If you leave areas where no insulation is provided, such as around window frames or door frames (hereinafter referred to as insulation defects), a large amount of heat will escape from these insulation defects. There was a problem in that the insulation performance of the house was significantly reduced.

For this reason, attempts have been made to provide some kind of heat insulating material to the above-mentioned heat insulating defective portion. For example, one such attempt is to fill the insulation defect with mortar, but since mortar itself has a high thermal conductivity, it is difficult to provide good insulation performance.

In addition, a method of filling the insulation defect area with an insulation material made by mixing bead-shaped foamed plastic such as expanded polystyrene with mortar is being considered, but this method still has the problem of poor insulation performance because a large amount of mortar is used. there were.

For this reason, foamable urethane is poured into the insulation defects.
A method has been proposed in which foaming occurs in this defective part. However, with this method, it is not easy to control the foaming of the urethane, and it may flow out from the insulation defect and adhere to the surrounding area, and it takes time and effort to remove this deposit, and the foam may flow out from the insulation defect. A major problem was that it took time and effort to scrape off the protruding foamed parts.

Another problem is that foamable urethane is expensive.

OBJECT OF THE INVENTION The present invention aims to solve the above-mentioned problems, and is capable of efficiently filling heat-insulating defects such as around window frames or door frames with good heat insulation properties. The aim is to provide insulation materials that can improve the insulation performance of houses, etc.

The heat insulating material according to the present invention for summer use has a density of 15 to 301 (!9/m3
A first foamed plastic whose foamed cells are at least partially buckled is selected from the group consisting of phenol foam with a density of 5 to 15 Ky/m3, urea foam with a density of 5 to 15 Ky/m3, and urethane foam with a density of 10 to 30 Ky/m3. The present invention is characterized in that a second foamed plastic in which foam cells are not buckled is dispersed in the base material.

There is.

The heat insulating material according to the present invention has a first foamed plastic as a base material in which at least some of the foamed cells are buckled, and a second foamed plastic in which the foamed cells are not buckled is dispersed in this matrix. For example, foamed plastic with excellent heat insulation performance can be easily filled into the insulation hole between the concrete wall of a house and a window frame without any gaps between the foamed plastic. This can significantly improve the insulation performance of houses, etc.

Detailed description of the invention The heat insulating material according to the present invention will be specifically explained below.

The heat insulating material according to the present invention is preferably provided in a heat insulation defect part in a building such as a house. Broadly refers to a space where no insulation material is provided, specifically as shown in Figure 1, between the concrete frame 2 and window frame 3 of a building, or around the door, or where plate-shaped insulation material was originally provided. Indicates a part where the insulation material is missing for some reason, even though the insulation material is missing.

The heat insulating material according to the present invention, which is preferably provided in such a heat insulation defect portion, is a first heat insulating material in which the foam cells are at least partially buckled.
The foamed plastic and the second foamed cell are unbuckled.
The second plastic foam is dispersed in the first plastic foam. A schematic diagram of the heat insulating material according to the present invention is shown in FIG. 2, as if the buckled first foamed plastic 4 fills the gaps between the particles of the second foamed plastic 5 and adheres the particles to each other. I am doing it.

Specifically, the first foamed plastic whose foamed cells are at least partially buckled has a density of 15 to 30.
Kg/m3 of phenolic foam, density 5-15Kg/
m3 urea form or density 10-301<9/m
3 urethane foam, etc. are used.

On the other hand, the foam cells of the second plastic foam are not buckled and are dispersed in the first plastic foam, which is at least partially buckled as described above.

As such a second foamed plastic, a foamed plastic that has been widely used as a heat insulating material can be used.

This second foamed plastic differs from the first foamed plastic, whose closed cells are not buckled, at least in part buckled and the closed cells are destroyed, thus ensuring better insulation performance thereby. At the same time, it prevents an extreme decrease in the volume of the entire foamed plastic due to buckling of the first foamed plastic, and serves as a filler to maintain the volume.

The second foamed plastic is in the form of granules, and may be foamed plastic granules, or may be made into granules by crushing a plate-shaped foamed plastic. This second foamed plastic preferably has many closed cells with excellent heat insulation properties, and specifically, foamed polystyrene, foamed polyethylene, foamed polypropylene, foamed polyvinyl chloride, etc. are used as the foamed plastic particles. . Further, as the granular material obtained by crushing the foamed plastic, a granular crushed urethane foam, a crushed granular foamed phenol, or a crushed granular foamed polystyrene having a density higher than the density of the first foamed plastic is used. The particle size of this granular second foamed plastic is preferably 0.5 to 5 mm.

In such a heat insulating material made of the first foamed plastic and the second foamed plastic, the area ratio of the first foamed plastic and the second foamed plastic is preferably 5:5 to 1:9 at any cut surface of the heat insulating material. The first foamed plastic and the second foamed plastic are used in such a manner that the degree of density is between 4:6 and 2:8.

In order to improve the adhesion between the first plastic foam and the second plastic foam of the heat insulating material according to the present invention, the surface of the second plastic foam may be subjected to primer treatment in advance before mixing with the first plastic foam. When applying primer treatment, an adhesive such as polyvinyl acetate or epoxy resin is used.

In addition, when installing the heat insulating material according to the present invention in a heat-insulating defective part, in order to improve the adhesion between the heat-insulating material and the surrounding wall of the heat-insulating defect, and to improve the workability during filling, polyester is added to the heat-insulating material. Additives such as vinyl acetate, polyacrylic acid ester, polyvinyl alcohol, and synthetic rubber (CR, SBR, NBR) can also be added.

If necessary, inorganic foam particles such as pearlite or shirasu balloons can be added as an extender to the above-mentioned heat insulating material. In addition, inorganic fibers such as asbestos glass fibers or organic fibers are added to the insulation material to improve the cohesiveness of the foamed plastic as a lump.
It can also improve mechanical strength as a heat insulating material.

In order to install the heat insulating material according to the present invention, for example, in a heat insulation defect, a phenol foam having a density of 15 to 30 kg/m3,
Urea foam with density 5-15 Kg/m3 and density 10
The base material is at least one type of foamed plastic selected from the group consisting of urethane foam of ~30Kg/7rL3, in which the foam cells can be easily buckled; A heat insulating material composition formed by dispersing a second foamed plastic in granular form that is hard to buckle is subjected to a quasi-(+iM) process, and this heat insulating material composition is used while buckling at least a portion of the first foamed plastic serving as the base material. The heat insulating material composition may be filled into the heat insulating defect part.Specifically, such a heat insulating material composition is filled into the heat insulating defect part in a building such as a house using a trowel or the like.
At least a portion of the plastic foam is easily buckled into the details of the insulation defect. On the other hand, when the second foamed plastic is filled using a trowel or the like, it is not buckled, and the foamed cells maintain their shape. In this way, in the present invention, when filling the heat insulating hole Id with the heat insulating material composition, at least a part of the first foamed plastic is buckled and the second foamed plastic is not buckled. If it is possible to fill the heat insulating material (composition A) into the defective part of the heat insulating material by any method, it does not necessarily have to be filled using a trowel or the like. Prepare the composition in a rod shape,
The heat insulating material composition may be filled into the heat insulating material defect by pushing the rod-shaped heat insulating material composition into the heat insulating material defect in a manner that buckles at least a portion of the first plastic foam.

As described above, in the present invention, at least a part of the first foamed plastic is buckled, and the second foamed plastic is not buckled and maintains the shape of the foamed cell as it is, so that the insulation material is added to the insulation defect part. Since it is filled with material, it is possible to fill even the details of the intricate structure with insulation defects, and the foamed plastic provides good insulation performance.

Effects of the Invention The heat insulating material according to the present invention has a first foamed plastic matrix (A) in which at least some of the foamed cells are buckled, and a second foamed plastic in which the foamed cells are not buckled is dispersed in this matrix. Therefore, it is possible to easily fill insulation-defective areas such as between the concrete base and window frames of a house with a foamed plastic insulation material with excellent insulation performance without any gaps between the foamed plastics. This can significantly improve the insulation performance of houses, etc.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a heat-insulating defect portion to which heat insulation properties are imparted according to the present invention, and FIG. 2 is a schematic diagram illustrating a heat-insulating material filled into the heat-insulating defect portion. 1... Insulation defective part, 2... Concrete body, 3.
・・Window frame, 4・First foam plastic, 5・
...Second foam plastic.

Claims (1)

[Claims] (1) At least one type selected from the group consisting of phenol foam with a density of 15 to 30 Kg/m^3, urea foam with a density of 5 to 15 Kg/m^3, and urethane foam with a density of 10 to 30 Kg/m^3, a first foamed plastic in which at least some of the foamed cells are buckled is used as a base material;
A heat insulating material in which a second foamed plastic whose foamed cells are not buckled is dispersed in this base material.