JP2000073490A - Material for civil engineering and construction, and wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a material for civil engineering and construction and a wall structure having excellent air permeability and water non-permeability and having suitable hardness as civil engineering and construction and having superior durability. SOLUTION: The material for civil engineering and construction is processed by a curing type silicon resin, and a silicon-resin processing nonwoven-fabric base material is constituted by curing the material. Bending resistance measured on the basis of JIS L-1096 is at least 10000 mgf at that time, and the wall structure configures an exterior wall or the inside of the exterior wall by using such a material for civil engineering and construction. In the wall structure, at least one of the exterior wall or an interior wall is organized of a composite sheet, in which at least one kind selected from a wooden sheet, a ceramic sheet, a glass sheet, a plastic sheet and a paper-shaped sheet is laminated, on one surface of the material for civil engineering and construction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a durable material for civil engineering and construction and a wall structure which are excellent in hardness, air permeability and shape stability and also excellent in non-water permeability.

[0002]

2. Description of the Related Art Conventionally, non-woven fabrics have been used for civil engineering and construction (civil engineering or construction).
The only use was made of the fact that it is excellent in air permeability and water permeability, or a method in which a waterproof resin layer was provided on one side and a nonwoven fabric layer was used for a drain passage.

[0003]

SUMMARY OF THE INVENTION The present invention changes the viewpoint in the practical method of such a nonwoven fabric by 180 degrees, and is a water-permeable but impervious water-resistant material. Can be used by cutting or sawing
Another object of the present invention is to provide a material for civil engineering and construction and a wall structure having excellent hardness and excellent durability for civil engineering and construction.

[0004]

The present invention employs the following means in order to solve the above problems. In other words, the civil engineering / architectural material of the present invention is a silicon-based resin-treated nonwoven fabric substrate that is treated with a curable silicone-based resin and is cured to obtain the JIS L-109.
6 is at least 10,000 mgf
The wall structure of the present invention is characterized in that the outer wall or the inner side of the outer wall is formed by using such a material for civil engineering and construction, and the wall structure of the present invention is further characterized in that: A composite sheet formed by laminating at least one selected from a wooden sheet, a ceramic sheet, a glass sheet, a plastic sheet and a paper sheet on one side of the civil engineering / architectural material; At least one of the inner walls is constituted.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The present invention changes the above-mentioned problem, that is, the aspect in the form and method in which the nonwoven fabric of the prior art is put into practical use by 180 degrees, that is, a material which is permeable to water but impervious to water. And, as with wood, it can be nailed or cut with a saw and used for civil and architectural materials with appropriate hardness. It has been found that such problems can be solved at once by treating the nonwoven fabric.

That is, according to the present invention, when a nonwoven fabric substrate was treated with a curable silicone resin and cured to produce a silicone resin-treated nonwoven fabric substrate, JIS L-1096 was used.
Is very hard and has excellent air permeability and impermeability, that is, it is resistant to water and has excellent form stability. It has been determined that it is possible to provide excellent civil and architectural materials in a consistent manner.

[0007] The material for civil engineering and construction of the present invention is not said to have a rigidity of 10,000 mgf, and is preferably a highly hard material having a hardness of 30,000 mgf or more. If you consider nailing or cutting with a saw,
Those having a hardness of about 30,000 to 100,000 mgf are preferred.

The civil engineering and building material of the present invention is characterized by being excellent in air permeability and water impermeability in addition to the rigidity. That is, the ventilation rate measured based on JIS L-1096 is preferably 30 cc / cm ² · sec.
As described above, it has excellent air permeability of more preferably 60 cc / cm ² · sec. Because of such excellent air permeability, it is possible to provide a wall structure that is sung as a characteristic of a conventional wooden house, does not propagate mold, is warm in winter and cool in summer. Furthermore, the civil engineering / architectural material of the present invention, despite having such air permeability, is JIS A
The water permeability measured based on -1218 (constant water level method) is preferably 10 ⁻² cc / sec. Or less, more preferably 10 ⁻³ cc / sec. Or less, and particularly preferably substantially 0. It has impermeability. Having such a function means that it is resistant to water and, of course, leads to the fact that the mold does not propagate, but it has a function of protecting the nonwoven fabric itself and the members constituting the inside thereof. It is.

The nonwoven fabric substrate of the present invention includes natural fibers,
A nonwoven fabric formed using synthetic fibers, inorganic fibers, and the like as materials can be used. In natural fiber, cotton,
A nonwoven fabric made of silk, hemp, pulp, or the like, particularly a papermaking product made of pulp, is preferably used. As synthetic fibers, polyester fibers, polyamide fibers, polyphenylene sulfide fibers, aromatic polyamide fibers, and the like can be used. As inorganic fibers, glass fibers, metal fibers, carbon fibers, and the like can be used.

[0010] Among these nonwoven fabric substrates, if the substrate is mainly composed of synthetic fibers, for example, a material having satisfactory strength can be provided. In particular, polyester fibers are preferably used. Furthermore, when at least one selected from flame-retardant fiber, weather-resistant fiber and heat-resistant fiber is used as the synthetic fiber, as a civil engineering / building material,
There is a degree of freedom to select a material having a desired function, and it is possible to provide a material according to an environment in which the material is used.

[0011] The nonwoven fabric substrate may be made of natural fiber, cotton,
Particularly composed of cellulosic fibers, such as hemp, palm and pulp, can provide a material that is very suitable for wooden buildings. In particular, when such fibers are formed of a paper-like material made of paper, it is possible to provide a material having a good appearance and a function suitable for a wooden building. A laminate of a plurality of such paper-like materials, or a plurality of such paper-like materials annularly wound, for example, dozens of papers, and joined together can provide pseudo wood having even annual rings like wood. .

The fibers constituting the nonwoven fabric substrate of the present invention are not limited to the thickness thereof, but are preferably 1 to 50 d, more preferably 2 to 20 d in view of strength and hardness. Is used. It is also a preferred embodiment of the present invention to use a nonwoven fabric substrate having a different fiber fineness, that is, a nonwoven fabric base material obtained by appropriately combining and laminating a nonwoven fabric made of fine fineness fibers and a nonwoven fabric made of thick fineness fibers. In this case, the limitation of the fiber fineness is further expanded. That is, for example, 0.01d
A nonwoven fabric made of 3d fibers as a surface layer, a nonwoven fabric made of 3d fibers as a middle layer, and a nonwoven fabric made of 15d fibers as a back layer, or an ultrafine fiber nonwoven layer on the front and back surfaces, and a 3d / 15d middle layer. Various combinations of laminated non-woven fabric substrates, such as a mixed fiber non-woven fabric layer, can be used. The nonwoven fabric of the present invention may be a spunbonded nonwoven fabric, a melt flow nonwoven fabric, or a combination thereof.

[0013] As the non-woven fabric substrate, preferred but since it is possible to achieve the effect of the thin as the present invention, at least 100 g / m ^2, preferably 150 to 300 g / m ²
Are preferably used as materials for civil engineering and construction from the viewpoint of hardness, air permeability, water impermeability, and form stability. 400g / m ² or more, 500g
/ M ² or more may be used, but a material having a relatively large basis weight can provide a material having a decent function without using the present invention. Benefits are reduced.

As such a nonwoven fabric substrate, a composite material formed by laminating at least one layer of a knitted fabric can also be used as the substrate. Such a composite material is preferably used particularly in view of form stability.

Further, as such a nonwoven fabric substrate, a binder,
For example, those partially bonded with an adhesive resin (adhesive fibers), particularly those containing low-melting fibers, and those partially bonded are preferably used, particularly from the viewpoint of form stability. .

As the nonwoven fabric substrate of the present invention, it is not essential to carry out a separate entanglement treatment, but a entangled treatment is preferably used from the viewpoint of form stability. For example, it is preferable that at least one type of confounding treatment of a water jet punch and a needle punch is performed. Further, as such a nonwoven fabric substrate, one having at least one surface calendered can also be preferably used.

The curable silicone resin used in the present invention is not particularly limited as long as it is composed of a silicone compound having a curing function. Examples thereof include polydimethylsiloxane and polymethylphenyl having a terminal silanol group. Polyalkyl, polyalkenyl such as siloxane and polymethylvinylsiloxane, or polyarylsiloxane, methylhydrogenpolysiloxane, a copolymer thereof, or a partial condensate thereof can be used.

Specifically, for example, a product obtained by curing a hydrolyzate of a silicon-based compound represented by the following general formula or a partial condensate thereof can be used.

Embedded image More preferably, a silicon-based compound represented by the following general formula can be used.

[0019]

Embedded image As the hydrolyzate of the silicon-based compound or a partial condensate thereof, a compound obtained by further blending a curing agent or a crosslinking agent and curing the mixture to a higher hardness is preferably used. That is,
The hardness and durability can be further improved by such a curing agent or a crosslinking agent.

As such a curing agent, for example, in the case of the former silicon compound, a silane coupling agent or
Organic metal compounds such as various metal alcoholates and various metal chelate compounds are used, and as a crosslinking agent, for example, an isocyanate compound, a melamine resin, a polyfunctional acrylic resin, a polyfunctional urea resin, an epoxy resin and the like can be used. As such an organometallic curing agent, for example, an organotin-based, organoiron-based or organoaluminum-based curing agent is preferable, and further, an organotin-based curing agent such as dibutyltin dilaurate, dibutyltin diacetate and dioctyltin laurate is preferably used. At least one selected is preferably used. As a crosslinking agent, an epoxy resin is preferably used.

In the case of the latter silicon compound, at least one selected from the following six compounds can be used as a curing agent.

(1) Aliphatic or unsaturated carboxylic acid or anhydride thereof (2) Aromatic carboxylic acid or anhydride thereof (3) Aliphatic or aromatic amine (4) Obtained from aliphatic amine and aromatic carboxylic acid (5) Alkyl-substituted methylolated melamine, imidazole compound (6) Metal complex compound containing iron, chromium, aluminum, cobalt or titanium Among these, metal complex compounds containing aluminum represented by the following general formula are preferably used. Is done.

[0023]

Embedded image Among such aluminum complex compounds, aluminum acetylacetone, aluminum-dialkoxide-monoalkylacetoacetate, and the like are preferably used.
Such compounds can be used as a mixture.

The above-mentioned silicon-based compound can be hydrolyzed, partially condensed, or polymerized by itself, and has a function of further curing.
By using the curing agent and the cross-linking agent together, it is possible to further highly polymerize and increase the hardness. In the present invention, the use of such a curing agent or a cross-linking agent is preferably used in view of the objects and effects of the present invention.

The present invention is directed to a silicon-based resin-treated nonwoven fabric substrate which is treated with a curable silicone-based resin composed of such a silicon-based compound and cured by curing the same. As a basis weight including, since the resin is adhered at least 50 g / m ² ,
Preferably, one having a basis weight of at least 200 g / m ² , more preferably 300 g / m ² or more is used. As the cured silicon-based resin obtained by curing the curable silicone-based resin, a resin having 100% by weight, more preferably 150% by weight adhered thereto is preferably used for achieving the above-mentioned curing of the present invention.

As means for applying the silicone resin, any of the three means of impregnation, coating and spraying can be used. According to the impregnation, the silicone resin is exhausted into single fibers. Alternatively, it can be applied in any form in which the surface of a single fiber is coated, and according to the application, it can be applied in a form of coating the fiber on the substrate surface on the application side of the nonwoven fabric substrate. it can. However, since the air permeability must not be impaired by this treatment, it is needless to say that the treatment liquid has a viscosity low enough to maintain such air permeability even in the case of coating. Furthermore, according to the spraying, it can be applied in the form of being partially adhered in a lump or granular form to the surface of the single fiber on the surface of the substrate on the spray side of the nonwoven fabric substrate. These three types of means may be employed as needed, but preferably impregnated in terms of hardness, which is a characteristic of the civil engineering and building materials of the present invention. The impregnation may be performed by repeating the impregnation-drying cycle until the desired hardness is obtained. Therefore, it is preferable to use the application or spraying means as the adjusting means after the impregnation. In any case, such a silicon-based resin-treated nonwoven fabric substrate of the present invention,
Because it is impregnated, it is also characterized in that it is treated with the silicon-based resin in single fiber units. The thus-obtained silicon-based resin-treated nonwoven fabric substrate of the present invention can be used as a single sheet, but may be a laminate of a plurality of other nonwoven fabrics. What is necessary is just a silicon-based resin-treated nonwoven fabric. Of course, all that constitutes the hurry may be constituted by the silicon-based resin-treated nonwoven fabric, and the laminate may be constituted by the silicon-based resin-treated nonwoven fabric having a gradient of the silicon-based resin adhesion amount. Good.

Examples of the civil engineering and building materials having such a gradient of the adhesion amount of the silicone resin include, for example, a shape in which the adhesion amount gradient of the silicone resin increases toward one surface and a shape where the adhesion amount gradient increases toward both the front and back surfaces. And, any of the shapes that increase toward the center can be adopted. By providing such a gradient, a material having a desired function can be appropriately provided.

The civil engineering / building material of the present invention, which is calendered on at least one surface, can provide a civil engineering / building material having a smoothed and other surface, and this surface can be provided with another material. It is convenient to provide civil and architectural materials, for example, wall structures, which are obtained by laminating.

The wall structure of the present invention comprises at least one of an outer wall, an inner wall, and an interior member inside the outer wall using such civil engineering and building materials. Needless to say, all the members can be made of the civil engineering / architectural material.

The outer wall or the inner wall may be provided with a wooden sheet, a ceramic sheet, a glass sheet, a plastic sheet, a fiber sheet,
At least one selected from a leather-like sheet and a paper-like sheet can be laminated. Here, the sheet refers to a thin film, a sheet having a thickness of 1 mm or more, and a sheet of 3 mm or more.
It is used in the sense including the above-mentioned plate-shaped thing. That is, it means that the thickness is not limited. Here, the fiber sheet includes a normal knitted woven fabric or a nap fiber sheet obtained by impregnating an elastic resin into a nonwoven fabric made of a fine fiber.

[0031]

The present invention will be described below in detail with reference to examples. The evaluation items used in the examples were based on the following measurement methods. That is, <thickness> JIS L-1096-6.5 <basis weight> JIS L-1096-6.4 <air permeability> JIS L-1096-6.27 <rigidity> JIS L-1096-6.20 <Water permeability> JIS A-1218 (constant water level method) <Tensile strength> JIS L-1096-6.12 <Elongation> JIS L-1096-6.12 Example 1, Comparative Example 1 5d polyester as a nonwoven fabric Using a spunbonded nonwoven fabric (thickness: 2 mm, basis weight: 200 g / m ² ) obtained by needle punching of fiber, using a curable silicone resin solution (main component: polydimethylsiloxane, concentration: 25% by weight; Toray Dow Corning Co., Ltd.) Immersion in SR2410)
Impregnation, then drying under the conditions of 120 ° C. × 10 minutes, immersion and impregnation in the above-mentioned curable silicone resin solution again, and drying under the same conditions to form a civil engineering / building material. The amount of silicon resin attached to this civil engineering and building material is 130% by weight.
The total weight of civil engineering and building materials was 460 g / m ² . As a comparative example, an untreated product of the silicone resin solution of the nonwoven fabric of Example 1 was used.

[0032]

[Table 1] As is clear from Table 1, in the case of Example 1, the elongation is small and the elongation is difficult to elongate, the water permeability is 0, no water permeates, and the air permeability is 90 cc / cm ² · sec. When,
Maintains sufficient air permeability, especially the softness is 220mg
Characteristically, it shows an extremely high value from f to 86000 mgf. Other values also have higher absolute values as a whole, indicating that they have excellent functions as materials for civil engineering and construction.

[0033]

According to the present invention, a water-permeable but water-impermeable material which is resistant to water and which can be nailed or cut with a saw like wood, and , Civil engineering
It is possible to stably provide materials for civil engineering and construction and wall structures having hardness suitable for construction with good reproducibility.

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Claims (12)

[Claims] 1. A silicon-based resin-treated nonwoven fabric substrate that has been treated with a curable silicone-based resin and has been cured, and has a rigidity measured according to JIS L-1096, Civil and building material characterized by at least 10,000 mgf. 2. The civil engineering / building material according to claim 1, wherein said softness is 30,000 to 100,000 mgf. 3. The civil and architectural material is JIS L-1.
30cc / cm ² · se measured based on No.096
c. The civil engineering work according to claim 1 or 2, which is the above.
Building materials. 4. The civil and architectural material is JIS A-1.
218 (constant water level method)
The civil engineering / building material according to any one of claims 1 to 3, wherein the material is 0 ^-2 cc / sec or less. 5. The nonwoven fabric substrate having a basis weight of at least 10
For civil engineering and construction material according to claim 1 which is 0 g / m ^2. 6. The nonwoven fabric substrate according to claim 1, wherein the knitted fabric is at least one.
The civil engineering / architectural material according to any one of claims 1 to 5, which is a composite substrate formed by laminating layers. 7. The civil engineering / architectural material according to claim 1, wherein the nonwoven fabric substrate is partially bonded with a binder. 8. The material for civil engineering and construction according to claim 1, wherein said nonwoven fabric substrate is partially bonded with low-melting fibers. 9. The civil engineering / architecture according to claim 1, wherein the nonwoven fabric substrate is a laminate of a plurality of nonwoven fabrics, and at least one layer of the nonwoven fabric is a silicon-based resin-treated nonwoven fabric. Materials. 10. A wall structure, wherein an outer wall is formed by using the civil engineering / building material according to any one of claims 1 to 9. 11. A wall structure, wherein an interior member inside an outer wall is formed using the civil engineering / building material according to any one of claims 1 to 9. 12. The civil engineering / building material according to any one of claims 1 to 9, wherein at least one selected from a wooden sheet, a ceramic sheet, a glass sheet, a plastic sheet, and a paper sheet is provided on one surface. A wall structure, wherein at least one of an outer wall and an inner wall is formed of a composite sheet formed by laminating seeds.