JPS6023750B2 - Lightweight base material for mortar coating - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves applying an isocyanate compound or an isocyanate polymer to an aqueous liquid containing an inorganic powder and a water-soluble polymer and/or an aqueous emulsion as main components on one or both sides of a plate-like material made of foamed plastic. A laminate plate provided with inorganic coating waste formed by blending is used as a substrate, and an isocyanate compound or isocyanate polymer is added to an aqueous liquid mainly composed of an aqueous solution and/or an aqueous emulsion of a water-soluble polymer on one or both sides of the core substrate. This relates to a base material for mortar coating, which has a coating layer containing one or more powdered materials, granular materials, or fibrous materials in addition to a system containing or not containing the following: To provide a base material for mortar coating that is lightweight and has excellent fire resistance, sound insulation, heat insulation, and workability.

BACKGROUND ART Conventionally, materials made of polystyrene foam, rigid polyurethane foam, etc. have been used as heat insulating materials on the inside of walls in construction. Although these are lightweight and have excellent insulation properties, they have a rough surface and low strength and cannot be used as wall or ceiling materials as they are, so plywood or gypsum board is bonded to one or both sides of the foam using adhesive. However, in both cases, the surface is covered with wood or gypsum board base paper, which not only does not improve the fireproofing properties but also has little soundproofing effect and is expensive.

On the other hand, when finishing the exterior walls of a wooden building with cement mortar, a wall framework is created, rough wooden boards are nailed onto it, and waterproof paper sheets impregnated with asphalt and wire mesh called lath are stretched over the entire surface and nailed. A method of painting cement mortar on top of fixation is being implemented.

In this construction method, the framework on the inside of the fan is intended to support the rough wood boards, and the rough wood boards serve as a support base for the waterproof paper sheet and lath net.If the waterproof paper sheet is coated with cement mortar, water will escape to the back side, resulting in water shortage. The lath net is used to prevent hardening failures and failures, and the lath net is also used to ensure the retaining force on the wall surface of the cement mortar layer by inserting the lath net when the cement mortar hardens.

In this way, in the case of cement mortar coating, the preparation process requires a lot of labor, which is an impediment to rationalization, but in recent years, in order to solve these problems, toluene, xylene, ethyl acetate, etc. Since it is made into an integral panel by painting with a resin or rubber paint soluble in organic solvents such as putanol, or by painting a mixture of cement and synthetic resin, it can be replaced with the conventional process of rough wood boards, waterproof paper sheets, and lath netting. Attempts are underway to replace and rationalize it, but the manufacturing process uses a large amount of organic solvents, the processability of cutting cement-coated panels is poor, and it is difficult to develop the adhesion of cement mortar on site. This has been pointed out as a shortcoming.

The present invention provides a lightweight base plate for mortar coating that eliminates both of these drawbacks. The feature of the present invention is that a base material for mortar coating that is lightweight and has excellent fire resistance, soundproofing, and heat insulation properties is obtained by using water-based components, and the isocyanate component mainly contributes to the adhesion to the foamed plastic substrate and water resistance. , the filler component contributes to the adhesion of the mortar. In the present invention, the term "plate-shaped material made of foamed plastic" means a foamed plastic plate-shaped material such as polystyrene, polyurethane, polyethylene, polypropylene, polyvinyl chloride, FRP, or the like.

Furthermore, the water-soluble polymer of the present invention is polyvinyl alcohol (
(hereinafter referred to as PVA), polyacrylamide, sodium polyacrylate, carboxymethyl cellulose (CMC),
Methyl cellulose (MC), hydroxymethyl cellulose (HEC), sodium alginate, maleic anhydride-isobutene copolymer, casein, starch, glue, gelatin, sodium ligninsulfonate, etc. Introduction of ordinary water-soluble polymers or carboxyl groups, etc. It refers to water-soluble polymers that have been modified with water, and can be used alone or in combination of two or more. Furthermore, the aqueous emulsion of the present invention is styrene.
Vinyl monomers such as ptadiene, ethylene, vinyl acetate, methyl methacrylate, chloroprene, isobrene, acrylonitrile, vinyl chloride, vinylidene chloride, various acrylate esters, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, vinyl versatate, etc. These aqueous emulsions can be used singly or in combination of two or more.

The isocyanate compound or isocyanate polymer of the present invention is methylene bisphenyl isocyanate (MDI).
, hexamethylene diisocyanate (HMDI), tolylene diisocyanate (TDI), adult of trimethylolpropane (TMP) and TDI, xylene diisocyanate (XDI), etc. The isocyanate of the present invention may be any compound or polymer containing an isocyanate group. Compounds or polymers containing groups can be diluted with a solvent or plasticizer such as DOP, DBP, toluene, xylene/chlorinated paraffin, DEP, fatty acid ester, etc. to improve the stability of the coating solution, water resistance after painting, and plastics. This is an effective method because it also improves the adhesion with.

In addition, fillers such as powders, granules, and fibrous materials and inorganic powders include calcium carbonate, talc, clay, gypsum, quartz powder,
Mica powder, slaked lime, expanded vermiculite, pumice grains, pumice sand, asbestos,
It means glass fiber, rock wool, synthetic fiber, etc., and can be used alone or in combination of two or more thereof.

Furthermore, if necessary, a dispersant, an antifoaming agent, etc. may be added.

The coating liquid used in the process of making the base layer of the present invention may contain surfactants, hair lotions, dispersants, antifoaming agents, pigments, dyes,
Preservatives, insecticides, etc. may be added.

Furthermore, when forming a surface coating layer on the surface of the laminate plate provided with the inorganic coating layer of the present invention, a polymer aqueous solution and/or aqueous emulsion and an isocyanate compound or isocyanate polymerization are applied to the surface of the inorganic coating layer in advance. You may also apply a sealer whose main ingredient is a substance.

When using the painting base material of the present invention, it is sufficient to simply drive nails onto the framework for the exterior or interior walls of a building and immediately apply cement mortar, making it possible to streamline the process considerably compared to the conventional construction method. Moreover, it is lightweight and has good workability.

The present invention will be further explained using Examples, but the scope of the present invention is not limited by these Examples.

Example 1 1 of the following composition A was applied to both sides of a 7-piece thick polystyrene foam.
00/day coat and air-dried.

Composition A and NS-100 per 100 parts of OM4000 (manufactured by Kuraray, ethylene-acetic acid emulsion) on the painted surface of composition A.
Calcium carbonate, 10 parts of melon sand, 7 parts of 10 parts, 3 parts of water, 1 part of sodium hexametaphosphate, TBP (antifoaming agent) 0. $
A painted panel was prepared by drying the paint consisting of the following parts using a reshin gun for 300 minutes.

The surface of these painted panels was coated with ordinary cement mortar with a ratio of Boltland cement and sand of 1:3 to a thickness of 2 meters, and after curing for 3 weeks, the adhesion strength was measured using a Renken type measuring device, and it was 4.1 kg/ground. showed the strength of

In addition, the painted panel of this example has not only adhesion but also fire resistance and
It was effective as a lightweight exterior material with excellent soundproofing and heat insulation properties.

Example 2 The following composition B was coated on one side of foamed polyurethane with a thickness of 1 inch for 200 coats and dried.

Composition B: Next, 10 parts of a 15% aqueous solution of polystron haku (polyacrylamide manufactured by Arakawa Forestry Chemical), 5 parts of calcium carbonate, 1 part of perlite, 1 part of sodium hexametaphosphate.
Add 2 coats of paint and apply evenly dispersed paint using a lishin gun for 20 minutes.
0 evening/Elbow paint dried and painted panels were created.

The surface of this painted panel was coated with ordinary cement mortar with a ratio of Boltland cement and sand of 1:3 to a thickness of 20 mounds, and after curing for 3 weeks, the adhesion strength was measured using a Renken type measuring device, and it was 3.5k9/. The strength was obtained.

The obtained painted panels also showed excellent performance in terms of fire resistance, sound insulation, heat insulation, and light weight.

Implementation row 3 After coating the surface of a foamed polypropylene panel with a thickness of 8 sails with the composition A of Example 1 and drying it, acrylic acid ester copolymer emulsion 10 base parts, clay 5 anchor parts, quartz powder 1
0 parts, 5 parts of glass fiber with fiber length 2 skin, 1 part of tetrasodium pyrophosphate, TBPO. A solution in which 5 parts of Millionate MR (MDI manufactured by Nippon Polyurethane Co., Ltd.) and 25 parts of Fly Azusa were uniformly dispersed was coated and dried in a spray gun for 300 minutes to obtain a painted panel.

Each surface of this painted panel was coated with cement mortar under the same conditions as in Example 1 to obtain a lightweight partition panel with excellent adhesion, fire resistance, sound insulation, and heat insulation properties.

Claims (1)

[Scope of Claims] 1. An isocyanate compound or isocyanate polymer is blended with an aqueous liquid containing an inorganic powder, a water-soluble polymer, and/or an aqueous emulsion as main components on one or both sides of a plate-like material made of foamed plastic. A laminate plate provided with an inorganic coating layer is used as a substrate, and an aqueous solution and/or an aqueous emulsion of a water-soluble polymer as a main component is coated on one or both sides of the substrate with an isocyanate compound or an isocyanate polymer and a powder, A base material for mortar coating, which is provided with a coating layer mainly composed of one or more of granular materials and fibrous materials. 2. An inorganic coating layer formed by blending an isocyanate compound or an isocyanate polymer with an aqueous liquid mainly composed of an inorganic powder, a water-soluble polymer, and/or an aqueous emulsion on one or both sides of a plate-like material made of foamed plastic. The provided laminate is used as a substrate, and a coating layer containing an aqueous solution and/or aqueous emulsion of a water-soluble polymer and one or more types of powder, granules, and fibrous materials on one or both sides of the substrate. Base material for mortar coating.