JPS62275749A - Laminate - 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 3. Detailed Description of the Invention (al) Purpose of the Invention "Industrial Application Field" The present invention relates to a waterproof laminate applied to a rooftop ring of a building, and particularly to prevent water leakage. The present invention relates to a flexible waterproof laminate that is useful for repairing slabs (concrete, precast boards) that have been damaged, and can be widely used in the construction industry.

``Conventional technology'' Recently, slabs used on the roofs of buildings have deteriorated over time (crack formation due to repeated contraction and expansion, performance decline due to weathering, etc.), allowing rainwater to seep through and cause water leakage. has become more common.

The probable causes of these accidents include materials such as the use of sea sand and amorphous silica sand, and construction methods such as the use of concrete pumps. It has not yet reached the point where it has been taken.

As a result, water leakage accidents from slabs used on building rooftops are expected to continue.

When water leaks occur, it can damage furniture, cause electrical wiring and appliances to malfunction, and interfere with a good night's sleep, making it impossible to live in the building with peace of mind.

Therefore, when such a water leakage accident occurs, it is necessary to carry out waterproofing work as soon as possible, but as mentioned earlier, this waterproofing work must be carried out on a slab that has deteriorated over time and has the following conditions. Therefore, it is extremely difficult to completely waterproof the area.

■The surface of the underlying slab is uneven and uneven.

■The underlying slab is hydrated.

■The underlying slab is weathered.

Hitherto, waterproofing work for buildings, including the above-mentioned foundations, has been carried out by forming a waterproof layer using a coating film mainly made of acrylic emulsion, urethane, asphalt, or the like.

However, since the formation of the waterproof coating film is carried out using spraying methods, etc., if there is a defect in any part during the construction process, the waterproofing will be incomplete, so sufficient consideration must be given to the management of the construction work.

In addition, it takes a long time to form (dry) the paint film, and if it rains during the formation of the paint film, that is, during construction, it is necessary to restart the construction from the beginning or make adjustments. A simpler method than waterproofing is desired.

In addition to waterproofing methods using paint films, there is also a sheet waterproofing method using PVC sheets, etc., but in the case of PVC sheet waterproofing, the influence of the plasticizer contained is large, causing problems in adhesion with top coat paints, so it cannot be used. In addition to being subject to major restrictions on top coat paint, when connecting sheets to each other by welding,
Another problem is that the sheet expands and contracts due to heat, making it difficult to make uniform connections.

"Problems to be Solved by the Invention" The present invention examines the problems of conventional repair waterproofing methods and provides solutions. The present invention also provides a laminate for use in the invention.

(B1 Structure of the Invention ``Means for Solving the Problems'') The present invention provides an insulating material that is flexible after curing and uses felt, woven fabric, glass fiber sheet, etc. as a reinforcing material on the ventilation layer or the heat insulation layer. This invention was made based on the discovery that the above-mentioned problems can be solved by providing a waterproof layer made of a saturated polyester resin composite material.

That is, the present invention relates to a waterproof laminate characterized in that an unsaturated polyester resin layer containing a reinforcing material and having flexibility is laminated on a base material having air permeability or heat insulation properties. .

◎Unsaturated polyester resin that has flexibility Unsaturated polyester resin that remains flexible even after curing is a general unsaturated polyester resin in which a part of phthalic anhydride is replaced with a polybasic acid that has flexibility. or substituted with ethylene glycol,
A part of propylene glycol is replaced with a flexible polyhydric alcohol, and the flexible polybasic acid and polyhydric alcohol are R92 published by Kagaku Kogyo Nippo.
85 Chemical Products” (Date of publication: January 30, 1985)
As described in pages 679 to 681 of , those skilled in the art are known to those skilled in the art, and examples of flexible polybasic acids include aliphatic long-chain polybasic acids such as succinic acid, adipic acid, and dodecanoic acid. Examples of the flexible polyhydric alcohol include diethylene glycol, triethylene glycol, polyethylene glycols, polypropylene glycols, 1,4-butylene glycol, and polytetramethylene ether glycols.

Commercially available unsaturated polyester resins that remain flexible even after curing include Yubika 8612 and 8671 from Nihon Yu and Ka.
．． 8701, Showa Kobunshi Nori Borac 50FBT, and the like.

A major feature of the present invention is that the unsaturated polyester resin used in the present invention remains flexible even after curing. When using unsaturated polyester resin,
Since this resin is characterized by becoming a strong material after curing, repair waterproof materials using this resin may not be able to follow the unevenness of the base or the expansion and contraction of the base. Due to these problems, the object of the present invention cannot be achieved.

◎Production method The following method is an example of a method for producing the waterproof laminate of the present invention using the unsaturated polyester resin having the above-mentioned flexibility (hereinafter simply referred to as unsaturated polyester resin).

First, a reinforcing material such as felt, woven fabric, glass fiber sheet, etc. is impregnated with an unsaturated polyester resin to which a curing catalyst has been added. Next, the felt is left at room temperature or placed in a heating oven to proceed with the curing reaction and becomes a ventilation layer or heat insulation layer.
It is laminated onto a foamed plastic material or the like to complete the curing reaction, and the waterproof layer and the breathable layer or heat insulating layer are integrated during the curing process of the unsaturated polyester resin.

The method of integrating a waterproof layer and a breathable layer or a heat insulating layer through the curing process of unsaturated polyester resin ensures good adhesion between the layers and provides a highly reliable waterproof material that can withstand long-term use. However, if a large amount of the unsaturated polyester resin impregnated into the reinforcing material permeates and absorbs into the ventilation layer or heat insulation layer during the lamination process, it will not only hinder the formation of a uniform waterproof layer ( , since the breathability also decreases, making it difficult to obtain the desired waterproof laminate with excellent waterproofness and breathability, there is a method in which the waterproof layer and the breathable layer or the heat insulating layer are integrated during the curing process of the unsaturated polyester resin. When adopting this method, it is desirable to adopt means for suppressing the penetration of the unsaturated polyester resin into the ventilation layer or the heat insulation layer to the necessary minimum during the lamination process.

'/A to the ventilation layer or heat insulation layer of unsaturated polyester resin
A method of suppressing U to the necessary minimum is to harden and laminate a waterproof layer made of an unsaturated polyester resin layer using felt, woven fabric, glass fiber sheet, etc. as a reinforcing material on the ventilation layer or heat insulation layer. ■ Provide a permeation-suppressing layer on top of the ventilation layer or heat insulation layer.

■Use thickened unsaturated polyester.

Combine methods ■■ and ■.

Examples of methods include:

A more detailed explanation of these methods is as follows.

■The permeation suppression layer is silicon-based or )/no-element-based tΩΩ
Either apply and dry a water-oil/oil agent on the laminated surface of the ventilation layer or heat insulation layer, or apply and dry a thickened acrylic emulsion, or the ventilation layer or heat insulation layer is made of thermoplastic resin such as polyester fiber or polypropylene fiber. In such cases, it can be provided by a method such as hot roll treatment.

Thickening of the unsaturated polyester (2) is achieved by reducing the amount of styrene monomer used as a crosslinking agent or diluent, selecting a crosslinking agent, or adding an inorganic thickening filler such as MgOSiO. However, excessive thickening of the unsaturated polyester resin will inhibit the impregnation of the unsaturated polyester resin into the reinforcing material, so the degree of thickening should be determined by a rotational viscosity needle of 4.000 to 50.000 centiboise/25. It is preferable to keep the temperature at ℃.

Of course, by combining methods (1) and (2), it is possible to more effectively suppress the penetration of the unsaturated polyester resin into the ventilation layer or the heat insulation layer.

"Function" Since the waterproof laminate of the present invention has a flexible structure introduced into the skeleton of the unsaturated polyester resin used, the entire body is highly flexible, and can conform to the irregularities of the base and expand. There is no problem in following the shrinkage, water stems generated from the water-containing substrate can be removed from the system extremely easily, flexibility,
It has sufficient functionality as a waterproofing material with excellent breathability and heat insulation, especially as a repair material for slabs that have deteriorated over time and have caused water leakage accidents.

Furthermore, since the waterproof laminate of the present invention can be produced in a factory as a panel structure, it can be constructed on-site as a panel structure, so when used as a panel,
The only thing that needs to be kept in mind during on-site construction is the joining of the panels, and most problems during construction are eliminated. Furthermore, the process of simply pasting panels with a waterproof structure requires a shorter construction period and is less affected by the weather.

Note that the waterproofing laminate of the present invention can of course be constructed while being manufactured at the site where waterproofing work is to be performed, and in particular, parts of corners and rising parts that cannot be treated with panels can be treated by a coating method.

In this case, the curing speed of the unsaturated polyester resin is not different from that of ordinary unsaturated polyester resins, and it has excellent on-site workability.

Since unsaturated polyester resin has good adhesion with top coat paint, the surface of the waterproof laminate of the present invention is coated with acrylic paint or urethane paint (decorative layer) with excellent appearance and weather resistance.
This is a preferable method because it allows for long-term maintenance of waterproof function and aesthetic appearance.

As described above, the flexible waterproof laminate of the present invention exhibits excellent performance in terms of workability, waterproofness, aesthetics, and durability as a waterproofing material for building rooftops, etc., especially as a waterproofing material for repairs. It is something.

"Example" The present invention will be described in detail below based on Examples.

Example 1 Yuhika 8 from Nippon Yupikar as an unsaturated polyester resin
671 was used, and 1.0 PHRi of methyl ethyl ketone peroxide as a curing catalyst was added thereto. Yubika8671
The viscosity was 390 centivoise/25°C. This catalyst-added unsaturated polyester resin was impregnated into a reinforcing material, Nippon Felt Industry Co., Ltd. - T0379 (thickness: 0.8 mm; weight: 300 g/m'; material: polyester). The amount of impregnation was 1,340 g/r/. Next, within 30 minutes after adding the catalyst to this unsaturated polyester resin composite, Nippon Felt Kogyo A Tobi's GTO570 (thickness: 2.5 mm), which has been treated with water and oil repellent treatment using a fluorocarbon resin as a ventilation layer, is added to the unsaturated polyester resin composite material.
15 mm; ffi amount: 557 g/rrf; material: polypropylene, polyurethane blend), cured, and bonded together. Curing of the unsaturated Bolier Stell resin was almost complete in 60 minutes. During the curing process, the unsaturated polyester resin permeated into the ventilation layer only slightly, and the breathability of the ventilation layer was maintained without being inhibited.

The waterproof laminate thus obtained has a waterproof layer on the top using felt as a reinforcing material, and a breathable layer on the bottom that is bonded and integrated, making it a waterproof material with excellent waterproofness, flexibility, and breathability. In particular, it has excellent functionality as a repair material for slabs that have deteriorated over time and caused water leakage accidents.

Example 2 Nippon Aerosi/L [) to Nippon Yupica's Yupica 8671
20P of white carbon Aeros i 1300
HR was added and uniformly dispersed using a high-speed stirring device. The viscosity of this product was 4.800 centivoids/25°C. 1.5 PHR of methyl ethyl ketone peroxide as a curing catalyst was added to the thickened unsaturated polyester resin, thoroughly mixed, and impregnated into GT0379 in the same manner as in Example 1. The amount of impregnation was 1,520 g/proof. Next, this unsaturated polyester resin composite was added within 30 minutes after adding the catalyst.
It was laminated on Nippon Felt Kogyo's FTO600 (thickness = 20 mm; weight: 600 g/m; material: polyester) as a ventilation layer, cured, and bonded together.

During the curing process, the thickened unsaturated polyester resin penetrated into the ventilation layer only slightly, and after curing, the unsaturated polyester resin formed a uniform waterproof layer and was well adhered to and integrated with the ventilation layer. The obtained waterproof laminate, like that of Example 1, had excellent functionality as a waterproof material, especially as a repair material for slabs that deteriorated over time and caused water leakage accidents.

(C1 Effects of the Invention The waterproof laminate of the present invention exhibits excellent performance in workability, waterproofness, aesthetics, and durability as a waterproofing material for building rooftops, etc., especially as a waterproofing material for repairs.) This makes it extremely easy and reliable to repair buildings with slabs that have deteriorated over time and caused water leakage accidents, and has a significant effect on shortening the repair work period and reducing costs, which will have an impact on the construction industry. is a great thing.

Claims (1)

[Claims] 1. A waterproof laminate, characterized in that an unsaturated polyester resin layer containing a reinforcing material and having flexibility is laminated on a base material having breathability or heat insulation properties.