JPS63315762A - Method for forming floor panel - 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] [Application fields under plan a] This invention relates to a method for forming a floor slab.

(Conventional technology) The conventional method for forming floor slabs is to mix silica sand with a poor amount of resin to give it a property of lacking fluidity, then pour it onto the base layer coated with brimer and smooth it with a trowel. A resin mortar construction method is known.

In addition, fine aggregate such as silica sand is blended with a rich amount of resin to give it good fluidity, and then it is poured into the top of the stratum (which has been coated with brimer) and smoothed with a trowel, spatula, rake, etc. A method is known for spreading the plaster over the floor.

In addition, resin is applied directly to the base layer, a large amount of crushed stone is immediately scattered on top of this, and after the resin has hardened, excess crushed stone that is not fixed by the resin is removed, creating a non-slip finish with crushed stones on the finished surface. The NEET construction method is also known.

(Problems to be solved by the invention) Among these construction methods, the resin mortar construction method and the Nagashi-coating floor construction method require skilled craftsmen to carefully perform the construction using trowels, rubber spatulas, etc., so they require long hours of work. In short, there is a problem in that the finish (its craftsmanship) depends on the skill of the craftsman.

In addition, the NEET construction method requires time and effort to remove excess crushed stone that has not been fixed with resin, and also has the problem that crushed stone that is slightly fixed with resin falls off and scatters when the vehicle is initially running. There is a point.

This invention was made to solve these conventional problems, and it can be easily installed without requiring considerable skill in floor construction technology, provides a finished product with good design, and eliminates the need for extra bones. The objective is to obtain a method for forming a deck slab that does not require the removal of timber.

(First Step to Solve the Problems) The method for forming a floor slab according to the present invention is to apply Brafmar to the base layer 1-, and then apply aggregate on the uncured primer layer. 711'''4- is characterized in that it is scattered to form an aggregate layer with part of it fixed to the primer layer, and then a two-component quick curing resin is sprinkled on this A↑ material layer. It is.

This will be explained in further detail below.

As the two-component quick-curing resin mentioned above, a urethane resin consisting of a polyisocyanate component and an active hydrogen atom-containing component is used.

As the polyisocyanate component, terminal NGOs derived from JH group polyC socyane-1, aliphatic polyisocyanates, alicyclic polyisocyanates, etc.
Examples include urethane polyesters.

The aromatic polyisocyanates mentioned here include, for example, tolylene diisocyanate (TD■), nphenylmethane diisocyanate (MD■), crude MDr (Cr
MDf) is an aliphatic polyisocyanate, for example, hexamethylene diisocyanate (HMD I
), lysine diisocyanate (LD I ), alicyclic polyisocyanates such as isophorone diisocyanate (IPDI) and hydrogenated diphenylmethane diisocyanate (MDIH), terminal NGO urethane prepolymers such as the above-mentioned polyisocyanates, and Examples include terminal NGO urethane prepolymers comprising isocyanates and polyether polyols, polynisder polyols, polybutadiene polyols, low-molecular polyols (water, 1.4-butanediol, glycerin, trimethylolpropane, etc.), and the like. Preferred among these are aliphatic polyisocyanates, cycloaliphatic polyisocyanates, and non-Q N CO urethane prepolymers derived therefrom.

This polyisocyanate is mixed with a plasticizer and an inert organic solvent.
The polyisocyanate component is blended with a reactive diluent and has a low viscosity.

The active hydrogen source f-containing components include polyneedle polyols and polyester polyols.

Examples include low-molecular polyols and polyamines.

The polyether polyols mentioned here include, for example, polypropylene glycol (PPG) and polytetramethylene glycol (PTMG), and the polyester polyols include, for example, a polyester polyol consisting of adipic acid and 1,4-butanediol. Examples of polyamines include aromatic polyamines (toluenediamine, diethyltoluenediamine, diphenylmethanediamine). Among these, preferred are:
This is a combination system of aromatic polyamines or polyols and aromatic polyamines. More preferred are aromatic polyamines.

Plasticizer for polyols, polyamines, etc.

Inert battering machine solvent, urethane catalyst 1 reactive diluent, etc. are blended to form an active hydrogen atom-containing component with low viscosity. Note that dyes and pigments may be added for coloring.

Such a urethane resin is one that gels at 20° C. usually within 30 minutes, preferably within 20 minutes, and most preferably within 5 minutes. If gelation takes longer than 30 minutes, curing will be delayed, especially in winter, which is not preferable.

The viscosity of this urethane resin is usually 20°C.
cps or less, preferably 5 g cps or less. If the viscosity exceeds 100 CPS, the air bubbles introduced during construction will not be able to escape from the surface and will remain on the finished surface, which may impair the finish (its design).

The above aggregates include silica sand, gravel, crushed stone, and seastone.

Emery, glass peas, glass bottle crushed granules.

Uses waste tire rubber chips, urethane chips, etc. The aggregate used has a higher specific gravity than the resin. If the specific gravity of the aggregate is lower than the specific gravity of the resin, it will float to the resin surface, impairing the finish (its design). The specific gravity of the aggregate is usually 1.2 to 3.0. The particle size of the aggregate will be smaller than the thickness of the floor slab when the purpose is to create a floor with a smooth finish. Aggregate has 21 different particle sizes.
! You may use it from now on. The particle size of aggregate is usually 1~20m■
It is.

As the above-mentioned brimer, a liquid moisture-curable urethane resin liquid is used. - As a liquid temperature air-curable urethane resin, polyols such as polypropylene glycol and tolylene diisocyanate (2.4 units/2.6 units = 80/2
0) or from polyisocyanates such as crude MDI.
do.

The NC0ff1 is usually 3 to 10%.

Next, the floor slab forming method of the present invention will be explained with reference to FIG. 1.2.

First, a brimer is applied on a smooth subgrade layer 1 of the floor slab made of mortar, concrete, etc., to form plies 1 and 2. In this case, as the base layer 1, concrete, mortar, or asphalt concrete is used. The base layer may be made of wood or synthetic resin. Use a brush to apply the brimer.

Rollers and sprays are used, but iron trowels, rubber spatulas,
A rake or the like may also be used. The amount applied is usually 0.1 to 0.
．． 5 and g/+m2, and the coating thickness of the primer layer 2 is 11.
o~200 microns.

Next, aggregate 3a is scattered over the uncured primer layer to form an aggregate layer 3 in which a portion of the aggregate is fixed to the primer layer. The amount of aggregate 3a depends on the thickness of the target slab, but it may be enough to hide the first layer of primer 2, or the aggregate 3a may be spread out in an overlapping state until the first layer of primer 2 is no longer visible. Usually 5 to 20 grams per meter.

You can scatter the aggregate at any time after applying the primer until it is dry to the touch, but after applying the primer,
It is preferable to scatter immediately. If aggregate is scattered after the braimer is dry to the touch, the finish (its design) will be poor because the aggregate will not be partially fixed by the braimer.

One way to spread the aggregate is by hand.

Methods include using a scattering machine, and scooping up aggregate with a shovel and scattering it as if by throwing it. No matter how you spread the aggregate, coarse and banded parts of the aggregate will occur, and raised parts of the aggregate layer 3 will be formed, so use a wooden trowel, metal trowel, rubber spatula, rake, etc. The aggregate 3a that is not fixed to the layer 2 is leveled and spread out so that the top of the aggregate layer 3 is as uniform as possible.

After scattering the aggregate, the work of leveling and spreading the raised aggregate 3a may be carried out before the first layer of primer 2 is dry to the touch, or may be carried out after the first layer of primer 2 has hardened. As a result of the work, the aggregate 3 adhered to the primer layer 2
The aggregate that is not adhered to the primer layer 2 placed on the layer a is smoothed out, and the head of the aggregate layer 3 becomes uniformly smoothed. In other words, the aggregate 3a is partially fixed to the primer layer 2. The time it takes to set is about the same as the time it takes for the brimer to dry and harden, usually 3
It is 0 minutes to 5 hours.

Finally, the polyisocyanate component and the active hydrogen atom base ("
A two-liquid quick-curing urethane resin consisting of the following components is appropriately blended and continuously sprinkled onto the smoothed aggregate layer 3 one after another without falling within the gelation time. 4 is the resulting two-component quick-curing resin layer.

If the area of the floor slab to be installed is small, weigh the appropriate amounts of the polyisocyanate component and the active hydrogen atom-containing component into a plastic bucket, pour the two liquids into a larger plastic bucket, mix them by stirring with a stirring rod, and then It can be sprayed with El. If the construction area is large, it may be applied continuously using a knee spray/head gun sprayer.

The amount of resin to be sprayed depends on the coating thickness of the target slab. Floor slab re! If the S thickness is 10m, 5~ per 1@2
10Kg, if the coating thickness of the floor slab is 3mm, 1I1
It is about 1.5 to 3 kg per 12. Painting of floor slab FJ
When the thickness is 3 mm or more, it is preferable to sprinkle the resin twice.

Spreading urethane wood ■ thicker than aggregate layer 3 will result in a smooth slab finish (the finished cross section is shown in Figure 1), and spreading it thinner than aggregate layer 3 to the extent that the aggregate is visible will result in a non-slip slab finish and beard. (The cross-section of the cross section is shown in Figure 2).

Since the defeated urethane resin has a low viscosity, it immediately penetrates into the gaps in the aggregate 3a and completely fills the gaps, covering the aggregate layer 3, and its surface becomes a self-leveling layer. It glides on and turns into a gel. At this time, the air bubbles mixed into the urethane resin immediately rise to the surface of the resin and break, so that f, t: 1. Kari (that 70 craftsmanship) will not be made S. Since the urethane resin added is quick-curing, it usually hardens within a few hours, making it possible to walk on the floor. It can be used as a version.

[Effect]

(1) Knee liquid quick-stiffening resin has low viscosity and excellent self-healing properties, and therefore, it easily penetrates between aggregates, resulting in a smooth and smooth surface that cannot be obtained with conventional methods.
It is possible to obtain a floor finish that is highly user-friendly.

(2) Since the aggregate is partially fixed to the primer layer, the aggregate will not be swept away by the spraying of the two-component quick curing resin and will not shift to one side.

(3) As mentioned in -L, the two-component quick-curing resin has excellent self-leveling properties and easily penetrates between the aggregates, so
No skill is required to spray, adjust the level, and adjust the thickness of the spray.

(Examples) Examples of the present invention will be specifically described below, but the examples of the present invention are not limited thereto. For the purpose of explanation, the composition and properties of the brimer and the two-component quick-curing resin used in the examples will be described. Note that parts and % represent parts by weight and % of heavy walls, respectively.

(1) Brimer A: polyether polyol and crude MD
A one-component moisture-curing terminal NGO urethane resin liquid consisting of I [
GL Brimer: Manufactured by Sanyo Chemical Industries, Ltd.] NGO 3.6%, resin content 38% (2) 4A for two-component quick-curing urethane resin ■Polyisocyanate component A: Duranate D-201
(manufactured by Asahi Kasei Corporation: Polyol frame) IMDI, 16
dNco urethane prepolymer) 100 parts, phenyl glycidyl ether 10 parts, dioctyl phthalate 10 parts
1 part and 80 parts of xylene were mixed and dissolved.

Viscosity: 40 cr's/2o C. ■Active hydrogen atom-containing component A: 100 parts of diethyltoluenediamine and 25 parts of perchlorethylene were dissolved.

Viscosity 40CI'S/20℃ ■Proper blending ratio: Active hydrogen atom-containing component A 1.25 parts ■Two-component blend viscosity: 40CPS/20℃ ■Geling time: 2 minutes/2
0°C (in 100g cup) (3) Two-component quick-curing urethane resin B ■Polyisocyanate component B, Sunblen FLR565
(Manufactured by Sanyo Chemical Industries, Ltd.: PPG-MDI terminal N
100 parts of G O urethane prepolymer (NC016%), 10 parts of phenyl glycidyl ether, and 90 parts of xylene were mixed and dissolved in a stand.

Viscosity 50CPS/20℃ ■Active hydrogen atom-containing component B: Iharakyuamine ML-1
00 (Ihara Chemical Co., Ltd. 5u), 5 parts of diethyltoluenediamine, and 60 parts of xylene were combined and dissolved.

Viscosity 40CPS/20℃ ■Appropriate blending ratio: ■Blend viscosity: 50f;PS/20℃ ■Geling time
5 minutes/20°C (in 100g cup) (4) Epoxy resin A ■Main agent A: Epicote 828 (Yuka Shell Epoxy Co., Ltd.) as bisphenol A type diglycidyl ether
Made by mixing 70 parts of epoxy equivalent (190), 5 parts of phenyl glycidyl ether, and 30 parts of dioctyl phthalate.

Viscosity 3000C: PS/20℃ ■ Forming agent A: Polymide 1, - as polyamide resin
4051 (manufactured by Eyo Kasei Kogyo Co., Ltd.; total amine (II)
i345).

Viscosity 450CPS /20'C ■Through blending ratio: ■Blend viscosity: 2500CPS /20t: ■Ij'l at gelling: 10 (1/20℃ (5)) Epoxy resin B ■Main agent B: Bisphenol A type diglycysil Edel was a mixture of 50 parts of Epicoat 815 (manufactured by Yuka Shell Epoxy Co., Ltd., epoxy equivalent weight 185) and 30 parts of Bituresin UPX-100 (low viscosity plasticizer, manufactured by Usagi H1 Kagaku Kogyo Co., Ltd.).

Viscosity 500CPS/20t: ■Curing agent B: React CA-1 as a modified amine curing agent
01 (manufactured by Sanyo Chemical Industries, Ltd.: total amine value 430) 30
part, DMP-30(R
5hm & IIass Chem, Co, Ltd) 3
and xylene 785.

Viscosity 4000Cr'S/20'C ■Appropriate blending ratio: Hardening agent 8 40 parts ■Blend viscosity: 1500CPS/20℃) Gelling time: 40 minutes/20℃ Manufactured by Shi Engineering Co., Ltd.)
The polyisocyanate component A and the active hydrogen atom-containing component A are respectively charged in a stock tank, and the mixing weight ratio of the polyisocyanate component A and the active hydrogen atom-containing component is 5.
．． The rotation speed of the gear pump was set so that 9 parts: 1.25 parts.

゛) Then, from the two-component head gun, polyisocyanate component A
and active hydrogen atom-containing component A were simultaneously mixed and discharged, and 100 g was collected in a polycup. The collected /rJ combined discharge liquid was 2
It lost fluidity and turned into a gel within minutes.

Next, Primer A was applied to the smooth mortar finish base layer for the floor slab with a 0.3 g/va" brush, and then No. 5 silica sand was sprinkled to the extent that the base was no longer visible. After 3 o+, the part where the No. 5 silica sand that had been scattered by hand was spread out evenly.Then, the urethane resin was mixed and discharged from the two-component head gun heavy equipment. , No. 5 silica sand was continuously sprinkled onto No. 42 of the No. 5 silica sand layer one after another without any hitch. The No. 5 silica sand was completely covered with the urethane resin without being washed away by the sprinkled urethane resin, and a smooth floor slab was formed. The temperature was 10℃ at the time of construction and 5℃ at night.

The finished state was observed 3 hours after the completion of application 1 and on the next day, and the results are shown in Table 1, indicating that the floor slab had an excellent smooth finish.

(Example 2) Brimer A was applied to the stratum below the smooth mortar finish for the floor slab.
to 0.3 g/m2 with a brush and immediately reduce the particle size to 10 u.
+m emery was scattered with a shovel until the base layer was almost completely covered. After 30 minutes, I leveled and spread the accumulated emery evenly on the main sheet. Emery, who was in the middle of the middle layer, was firmly attached to the braimer.

In the same manner as in Example 1, the urethane resin was mixed and discharged from a two-component head gun coating machine, and was coated one after another onto the L layer of emery without dropping. The emery was not washed away by the sprayed urethane resin and penetrated deeper into the emery. Urethane resin was sprinkled to the extent that Emery's head was visible and hidden, and a floor slab was formed. 10℃ during construction
The temperature was 5°C at night.

Table 1 shows the results of observing the sagging condition 3 hours after the completion of construction and the following day.
It was a thorn.

(Example 3) Two-liquid head gun paint machine (manufactured by Toshi Engineering Co., Ltd.)
Polyisocyanate component B and active hydrogen atom-containing component B were respectively charged in a stock tank, and the mixing ratio of polyisocyanate component B and active hydrogen atom-containing component B was 18.
The rotation speed of the gear pump was set so that 4 parts = 165 parts.

Next, polyisocyanate component B and active hydrogen atom-containing component B were simultaneously mixed and discharged from a night gun, and 100 g was collected in a polycup. The sampled mixed discharge liquid lost its fluidity and turned into a gel in 5 minutes. Then, a smooth floor slab was formed in the same manner as in Example 1). The temperature was 10℃ at the time of construction and 5℃ at night.

Table 1 shows the results of testing the floorboards in the WA dormitory 3 hours after the completion of construction and at 11pm the following day. t') was second.

(Comparative Example 1) A mixture of 3 parts of epoxy resin base material AlO, 30 parts of epoxy resin curing agent A, and 50 parts of xylene was applied as a primer to a smooth mortar finish base layer for floor slabs at a concentration of 0.3 g/m.
It was covered with two brushes. After curing and drying the primer layer for the first time, I moved on to the next step. Mix 3 parts of epoxy resin main agent AlO, 30 parts of epoxy resin curing agent A, and 500 parts of No. Finished smoothly. Whenever the epoxy resin and silica sand adhered to the gold tin and the work became difficult, I wiped the gold tin with a xylene-impregnated rag as I worked. The temperature was 10℃ at the time of construction and 5℃ at night.

Table 1 shows the results of observing the finished state 3 hours after the completion of construction and the next day.

(Comparative Example 2) A mixture of 80 parts of epoxy resin base B, 840 parts of epoxy resin curing agent and 20 parts of xylene was applied as a primer to a mortar finish base layer for flat and smooth floor slabs at 0.3 g/1.
The coating film was 0 with 12 brushes. After leaving it for the first time, I hand-sprinkled No. 5 silica sand just enough to cover the surface. The No. 5 silica sand that was spread was only on top of the primer layer and was not fixed at all.

Then, a mixture of 880 parts of an epoxy resin base material and 840 parts of an epoxy resin curing agent was poured onto the No. 5 silica sand layer.

A portion of No. 5 Siberian was washed away by the sprayed epoxy resin, and was not completely covered, leaving it partially piled up. At the time of construction, the temperature was 5°C at night.

Table 1 shows the results of observing the finished state 3 hours after the completion of construction and the following day.

(Comparative Example 3) - 880 parts of an epoxy resin base agent and React C as an epoxy resin curing agent were added to the smooth floor slab mortar finish layer.
30 parts of Al0I (manufactured by Sanyo Chemical Industries, Ltd.) and DMP
-30.3 parts of the mixture was flow coated using a 1.0) tg/m2 iron trowel. Immediately, emery with a particle size of 10 mm was scattered using a shovel until the base was completely covered. The temperature was 10℃ at the time of construction and 5℃ at night.

Table 1 shows the results of observing the stagnant condition 3 hours after the completion of construction and the next day. However, the excess emery that was not in contact with epoxy resin No. 11 was removed the following day.

Table-1 * Due to insufficient curing of the resin **　There are waves on the thorn surface.

〔Effect of the invention〕

(1) Since the two-component fast-curing resin has a low viscosity and forms self-leveling beams, even if air bubbles are unavoidably mixed in during construction, they will rise to the surface and break, making it difficult to obtain with conventional floor slab forming methods. The result is a smooth, decorative finish.

(2) Since the aggregate is partially fixed by the primer layer and the F base is sealed, when the two-component quick-curing resin is sprayed, the aggregate will be swept away by the resin and will not come close. No special skill is required for spraying as it penetrates into the gaps between the aggregates. Additionally, for a smooth finish, it is sufficient to spray the resin until the top of the aggregate layer is completely covered, making it possible to easily control the coating thickness. Therefore, the construction is simple and does not require a conventional skilled troweling craftsman.

(3) In the case of a non-slip finish, it is sufficient to spray the two-component quick curing resin until the head of the aggregate is exposed, and there is no need to remove excess aggregate after construction is completed. Therefore, it is easier to construct than the conventional NEET construction method.

(4) If you use colored aggregate as the aggregate and choose a colorless and transparent two-component quick-curing resin, the colored aggregate will appear lifted from the finished surface, resulting in a uniquely designed floor finish. .

Note that the floor slab formed according to the present invention has the above-mentioned excellent effects, so it can be used as an office floor.

Factory floor, hospital floor 1 walking path, stadium track.

It can be used in fields, tennis courts, racetrack 1 gymnasiums, volleyball courts, basketball courts, jogging courses, and other various fields.

[Brief explanation of drawings]

FIG.
FIG. 2 is a cross-sectional view of a non-slip finished floor slab for explaining the floor slab forming method of the present invention. 1... Base layer 2... Primer layer 3... Aggregate layer 3 a...=... Aggregate

Claims (5)

[Claims] (1) A primer layer is formed by applying a primer on the base layer, and then aggregate is scattered on the primer layer in an uncured state, and a part of the aggregate is fixed to the primer layer. 1. A method for forming a deck slab, which comprises forming a layer of aggregate, and then spraying a two-component quick-curing resin onto the aggregate layer. (2) The method for forming a deck slab according to claim 1, wherein the two-component quick-curing resin is one that gels within 30 minutes at 20°C. (3) The method for forming a deck slab according to claim 1 or 2, wherein the two-component quick-curing resin has a viscosity of 100 CPS or less at 20°C. (4) The method for forming a deck slab according to any one of claims 1 to 3, wherein the two-component quick-curing resin is a urethane resin comprising a polyisocyanate component and an active hydrogen atom-containing component. (5) The method for forming a deck slab according to any one of claims 1 to 4, wherein the aggregate has a specific gravity greater than the specific gravity of the two-liquid quick-curing resin.