JPS6198845A - Building material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to construction materials, in particular waterproofing and paving materials, flooring or walling materials.

Various organic and inorganic compounds have traditionally been used for waterproofing materials, paving materials, flooring materials, wall materials, etc.;
Polyurethane resins have been used in many parts due to their mechanical properties, workability, economic efficiency, etc.

Regarding the quality of these materials, construction specifications, construction techniques, etc.
The system has been improved through JIS, JASS, the certified technician system, etc., and the reality is that they are now being applied and contributing in a stable manner.

In particular, due to the increased demand for sports facilities due to the recent increase in the number of people playing sports, roofs of structures, which previously only had waterproof functions, have now been designed to have insulation effects and sports facilities for the purpose of saving energy. There is a demand for "bars" that can also fulfill the functions of paving materials, flooring materials, etc.

Naturally, waterproofing materials and paving materials have different functions and material properties.

Waterproofing materials are required to follow the repeated movements of base cracks and joints in the substrate well, and to have excellent weather resistance and durability.

On the other hand, paving materials are required to have excellent abrasion resistance, good appearance, smoothness, as well as shock absorption and dispersion properties.

Then, by applying existing polyurethane resins and construction methods,
When trying to obtain a material that has both of these characteristics, in order to satisfy the waterproof function.

A large amount of polyurethane resin must be used. As a result, not only is it uneconomical, but it also becomes too soft, impeding movement, and tends to cause blisters.

In addition, in order to satisfy the paving material function, the ability to follow cracks in the base is insufficient and water leakage is likely to occur.

Furthermore, in the case of insulation construction methods in which hard polyurethane foam, expanded polystyrene foam, etc. are inserted into the lower layer or F layer of polyurethane resin to increase the insulation effect, the insulation layer may be damaged when exercise loads are applied, causing water leakage. becomes.

The present inventors have developed an anti-icing and paving material that solves the above problems.
The present invention was completed as a result of extensive research aimed at developing flooring or wall materials. That is, it is a construction material characterized by containing organic elastic foam beads in a polyurethane resin.

The polyurethane resin of the present invention may be one obtained by reacting a curing agent with a main resin mainly composed of a urethane prepolymer containing terminal incyanate groups, or one obtained by moisture-curing - with a urethane prepolymer containing terminal incyanate groups. Can be mentioned.

Examples of such urethane prepolymers containing terminal incyanate groups include those obtained by reacting at least one polyol selected from polyether polyols and polyester polyols with an organic polyisocyanate compound.

Examples of polyether polyols include those obtained by addition-reacting alkylene oxide to a compound having two or more active hydrogen groups.

Examples of compounds having two or more active hydrogen groups include:
water, propylene glycol, dipropylene glycol,
Tripropylene glycol.

1.3-butanediol, 1.3-butylene glycol, 1.6-hexanediol, pentaerythritol,
Glycerin, trimethylolpropane, castor oil, polybutane diene containing terminal hydroxyl groups, monoethanolamine,
Examples include jetanolamine, triethanolamine, phosphoric acid, and the like.

Examples of the alkylene oxide include ethylene oxide, propylene oxide, butylene oxide, styrene oxide, and tetrahydrofuran.

Preferred examples include polyether polyols having an average molecular weight of 200 to 20,000 and starting from a compound having 2 to 4 active hydrogen groups.

Next, examples of polyester polyols include those obtained by subjecting a polybasic acid and a polyhydric alcohol compound having two or more hydroxyl groups to a high-temperature dehydration reaction in the presence of an acid catalyst.

Examples of polybasic acids include phthalic acid, adipic acid, maleic acid, etc.; examples of polyhydric alcohol compounds having two or more hydroxyl groups include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol,
Examples include trimethylolpropane, glycerin, pentaerythritol, and the like.

Preferably, an average molecular weight of 5 having 2 to 3 terminal hydroxyl groups
00 to 3000 polyester polyols.

Examples of organic polyisocyanate compounds include tolylene diisocyanate (TDI-80), diphenylmethane diisocyanate, xylene diisocyanate, polyphenylpolymethylene polyisocyanate, naphthalene diisocyanate, hexamethylene diisocyanate, inphorone diisocyanate, hydrogenated diphenylmethane diisocyanate (hydrogen Examples include additive MDI), polyisocyanate adducts of lower alcohols, etc. alone or in mixtures.

The reaction ratio of the polyol and the organic polyisocyanate compound is preferably 1.8 to 5 in NGO10H equivalent ratio.
The amount of free incyanate in the urethane prepolymer containing terminal incyanate groups is preferably 1.5 to 10% by weight.

Next, as a curing agent to be reacted and cured with a main ingredient mainly composed of a urethane prepolymer containing terminal incyanate groups, examples of the curing agent include the above-mentioned polyether polyol, the above-mentioned polyester polyol, hydroxyalkyl acrylate, hydrodimethyl acrylate, and alkyl acrylate. 4. Acrylic polyol with an average molecular weight of 20,000 to 50,000, which is obtained by copolymerizing a combination of methacrylic acid esters and, in some cases, styrene and methacrylic acid.
4'methylenebis(2-chloroaniline) 0! 'l0
A), diaminodiphenylmethane, etc. alone or as a mixture.

Furthermore, in the present invention, when a curing agent is caused to react with a curing agent containing a urethane prepolymer containing terminal incyanate groups as a main component, or when a urethane prepolymer containing terminal incyanate groups is moisture-cured, a curing agent component is added as necessary. Alternatively, inorganic fillers, colorants, catalysts, plasticizers, and other additives may be blended into the urethane prepolymer containing terminal incyanate groups.

Examples of the inorganic filler include lucium carbonate, bentonite, lucium chloride, titanium oxide, and slaked lime.

Examples of the coloring agent include carbon, chromium oxide green, red iron oxide, and the like.

Examples of the catalyst include organometallic compounds such as dibutyltin dilaurate, stannath octoate, dibutyltin diacetate, lead oxytylate, and naphthene.

Examples of plasticizers include dibutyl phthalate (DO
P), dibutyl phthalate, dioctyl adipate, or those obtained by blocking the hydroxyl groups of polypropylene glycol or polyethylene glycol with acetic acid.

Other additives include, for example, liquid resin.

Modifiers such as petroleum resins, antifoaming agents such as silicone, paraffin, and mineral oil, solvents such as ethyl acetate, toluene, and xylene,
Examples include antioxidants.

The blending ratio of these inorganic fillers, colorants, catalysts, plasticizers, other additives, etc. is arbitrary.

Next, as the organic elastic foam beads of the present invention, beads made of a polymeric compound-based elastic foam, such as polystyrene, ABS, polyethylene, polypropylene, PVC, etc.
Examples include elastic foam beads consisting of single or composite beads such as .

Preferred are elastic foam beads made of polystyrene and polyethylene.

The expansion ratio of organic elastic foam beads is 1.1 to 60 times,
If the zero expansion ratio, which is preferably 20 to 50 times, is less than 1.1, the elasticity will be low and the impact absorption and heat insulation effects will be low.

If the foaming ratio exceeds 60, it will absorb excessive shock,
When the mobility is reduced and the permanent compression strain becomes large, residual cracking also becomes large, causing quality deterioration.

The particle size of the organic elastic foam beads is 0.1 to 10 mm in diameter. Particle size is 0.1-101. , later, is superior in terms of mixability with polyurethane resin, ease of coating, ability to follow repeated movements on the substrate, shock absorption, heat insulation effect, economical effect, etc.

When the particle size is less than 0.1, coating workability, shock absorption properties, etc. are poor.

Furthermore, if the particle size exceeds lOl, I, the mixability and coating workability deteriorate, and unevenness and protrusion are likely to occur.

The amount of the organic elastic foam beads is determined in a mixture of a curing agent and a base resin containing a urethane prepolymer containing terminal incyanate groups, or a moisture-curable urethane prepolymer containing terminal incyanate groups. It is blended so that it is contained in the polymer in an amount of 1 to 5%.

If the amount of organic elastic foam beads is less than 1%, the impact absorption, heat insulation effect, economic effect, etc. will be poor. Moreover, when it exceeds 5%, the volume ratio increases and the coating workability is poor.

The construction materials according to the present invention include those in which organic foam beads are contained in the above-mentioned polyurethane resin, and specifically, the main material is a urethane prepolymer containing terminal incyanate groups. and a hardening agent, or a moisture-curable terminal incyanate group-containing urethane prepolymer mixed with an organic elastic foam bead-containing compound. Examples include those coated on. Furthermore, if necessary, they may be laminated in two or three or more layers. Further, another polyurethane resin layer may be formed on the lower layer or the upper layer of the polyurethane resin containing organic elastic foam beads.

Specific uses of the construction materials according to the present invention include waterproofing/paving materials, flooring materials, wall materials, and the like.

Since the construction material obtained according to the present invention has waterproof function and paving material function with excellent heat insulation effect,
Ideal as a waterproof/paving material, an intermediate layer material for flooring or wall materials, or a surface finishing material.

Therefore, it can be used for indoor and outdoor courts for sports facilities, promenades, architectural floors, architectural walls, etc.

Furthermore, it is also possible to reduce injuries caused by falls to runners, pedestrians, etc.

Next, the present invention will be explained with reference to Examples.

In the examples, "%" and "part" are based on 1 weight.

Production Example 1 Various main ingredients containing a urethane prepolymer containing terminal incyanate groups were produced according to the following production method.

In addition, in the production examples, the numbers in parentheses indicate the blending ratio.

(A-1) After dehydrating a mixture of polyoxypropylene glycol (51) with an average molecular weight of 2000 and polyoxypropylene triol (34) with an average molecular weight of 3000, TDI-80 (15) was added under stirring, and 100 The reaction was carried out at ℃ for 2 hours to obtain a urethane prepolymer (hereinafter referred to as A-t) containing 3.7% of M-released isocyanate groups.

(A-2) Polyoxypropylene glycol with an average molecular weight of 700 (
7,8), polyoxypropylene glycol (47) with an average molecular weight of 2000, polyoxypropylene triol (23,5) with an average molecular weight of 3000, and TDI-80.
Using (21,7), a urethane prepolymer containing 6.5% of free incyanate groups (hereinafter referred to as A-2) was obtained by the same manufacturing method as (A-1).

(A-3) Polytetramethylene glycol with an average molecular weight of 1000 (
55) was dehydrated under reduced pressure at 120°C for 60 minutes, and this was mixed with ethyl acetate (25), hexamethylene diisocyanate).
(20) and dibutyltin dilaurate were added gradually over 30 minutes at a temperature of 60°C to a reaction tank, and after the dropwise addition was completed, the reaction was further carried out at 70°C for 60 minutes to release free indium. A low viscosity liquid urethane prepolymer (hereinafter referred to as -3) with a solid content of 75% and containing 5.5% cyanate groups was obtained.

Manufacturing example 2 A curing agent was manufactured according to the manufacturing method described below.

In addition, in the production examples, the numbers in parentheses indicate the blending ratio.

(B-1) Polyoxypropylene triol (12) with an average molecular weight of 3000 and KE-850 (liquid resin 0 Nippon Petrochemical ■
MOCA (3,7) was heated and dissolved in (20), and calcium carbonate (54), carbon (3),
A small amount of DOP (3), lead octylate (1,3), a silicone antifoaming agent, an antioxidant, etc. are blended, and the total blending ratio is 1.
00 was thoroughly mixed with a Miki roll to obtain a black viscous liquid cured product (hereinafter referred to as B-1).

(B-2) Instead of the carbon in (B-1), chromium oxide green was used, and the other procedures were the same as in (B-1). ) was obtained.

(B-3) Using red iron instead of carbon in (B-1), the other steps were the same as in (B-1) to obtain a red iron colored viscous liquid curing agent (hereinafter referred to as B-3). .

(B-4) Curemin ML-150 (MOCA 50% liquid product, manufactured by Ihara Chemical Industry ■) (33),
50), DOP (15) and chromium oxide green (2
) were thoroughly mixed using a Miki roll to obtain a green viscous liquid curing agent (hereinafter referred to as B-4).

(B-5) Using pen color instead of the chromium oxide green in (B-4), the other steps were the same as in (B-4), and a red viscous liquid hardening agent (hereinafter referred to as B-5) was prepared. I got it.

(B-6) Acrylic polyol (50) with an average molecular weight of 45,000 made by copolymerizing methyl acrylate and hydroxyethyl acrylate, xylene (40), chromium oxide green (
10) were thoroughly mixed and dispersed to obtain a green low-viscosity liquid curing agent (hereinafter referred to as B-8).

(B-7) Using red iron oxide instead of the chromium oxide green in (B-8), the other steps were the same as in (B-6), and the hardening agent was made into a red viscous liquid (hereinafter referred to as Day-7). I got it.

Example 1 A primer; Polyflex PR (-liquid urethane primer; manufactured by Daiichi Kogyo Seiyaku ■) was coated with a trowel on a slate board (8 squares thick, 50cm x 50crl square) to prepare the base.

After curing for 2 hours, a primer containing organic elastic foam beads was applied with a trowel.

Next, an intermediate coating material was applied with a trowel, and the material was allowed to cure for one day.Furthermore, a top coating material and a finishing material, Nidotsubu Coat, were applied in the same manner to obtain a paving material (floor specimen).

After curing for 7 days, their physical properties were measured.

Incidentally, a comparative example was also carried out in the same manner.

The results are shown in Table 1.

As is clear from Table 1, when compared with Comparative Example A, which does not contain an organic elastic foam heap, Inventive Example 1 has a smaller load on compressive stress, and has a lower impact impact due to the golf pole's coefficient of restitution, hardness during exercise, etc. It has been recognized that it has good absorption, provides excellent comfort during exercise, and has an excellent heat insulating effect due to its thermal conductivity.

Example 2 The same procedure as in Invention Example 1 was carried out using an asbestos slate plate (thickness: 8 m+w, diameter: 10 (3, length: 30 cm)).

Furthermore, a comparative example was also carried out using the above-mentioned asbestos slate board with the same formulation as in comparative example A.

The resistance of the obtained paving material (floor specimen) to base cracks was measured according to "Quality Standards for Building Materials and Test Methods; Japan Housing Corporation."

The results are shown in Table 2.

As is clear from Table 2, in Invention Example 2, no abnormal occurrence of base cracks was observed, and it was also excellent in the effect of absorbing and alleviating base cracks.

Example 3 Waterproofing and tennis NEET were carried out on the roofs of two-story reinforced concrete buildings A and B with a width of 20 m and a length of 40 m. First, the primer Polyflex Pl'1 was applied to Building A of the two Buildings A and B in o, 2i, g/go using a roller to prepare the base.

After curing for 2 hours, an undercoating material containing expanded polystyrene beads (expansion ratio: 25 times, particle size: 2., blending amount: 2.5%) (base agent A-1, curing agent day-1, base agent / The mixture ratio of curing agent was 1/2, coating! 1.5b/rn') was applied with a metal trowel.

The next day, apply intermediate coating materials (base resin A-1, curing agent B-3, main resin/curing agent ratio l/2, coating amount ti, / rn'
) was applied evenly with a rubber rake.

The next day, the tennis court was delineated and a green top coat material for tennis courts (base agent A-6, curing agent B-4, main agent/
Hardening agent blending ratio 1/l, application 1.0kg/m'),
and top coating material for tennis courts (main agent A-1, curing agent B-
5. Base resin/curing agent blending ratio 1/1, coating 1. O
b/rrr') was applied.

The next day, Nidotsubu Coat is a green finish for inside tennis courts (base agent A-3, hardener B-6, base agent/hardener ratio 1/8, spraying amount 0.2b/rn'), and Hengara color finish for outside tennis courts. Material nidotsubu coat (base resin A-3, curing agent B-7.Blending ratio of main resin/curing agent l/
8. Spraying amount 0.2 h/m') was sprayed twice at 1 hour intervals.

Next, for comparison, a waterproof/tennis court was constructed in Building B in the same manner as Building A except that expanded polystyrene beads were not used and the amount of intermediate coating material was changed to 4.0 kx/m'. Mobility and aging of these tennis courts (
2 years later).

The results are shown in Table 3.

Chiku 3 Man As is clear from Table 3, the present invention example: Hem ridge tennis court ° was recognized to be useful as a waterproof tennis court, while the comparative example 2 B ridge tennis court had defects due to aging. It was found that there were problems as a waterproof layer, and that it was not suitable for tennis courts as it caused fatigue on the lower back, knees, heels, etc.

Claims (1)

[Claims] 1. A construction material characterized by containing organic elastic foam beads in a polyurethane resin. 2. The construction material according to claim 1, wherein the construction material is a waterproof/paving material, a floor material, or a wall material.