KR900000233B1 - Sound-proop treatment material of board and its process - Google Patents

Abstract

Comoposite made of calcium carbonate, regenerated tire rubber or thermoplastic resin is mixed with rock wool and extruded or calender- rolled and then vulcanized to form sound-proof fabric (I), which is then embossed by rolls to form independent convexes, where glass fiber, synthetic fiber and phenolic resin are mixed, heated to 180 C and fleeced to give non-woven fabric which is filled into the concave parts of molded fabric (I) and then softened by heat and fused with a metal sheet.

Description

[Name of invention]

Soundproofing and soundproofing method of plate

Detailed invention of the invention

The present invention relates to a soundproofing material and a soundproofing method of a plate material, and more particularly to a soundproofing material and a rigid plate material using a loft nonwoven fabric or a fibrous material together with a vibration damping sheet shape molded into an irregular shape. The present invention relates to a soundproofing method formed by mounting.

Conventionally, soundproofing is required for walls, ceilings, partitions, etc. of buildings, factories, warehouses, etc., for example, gypsum boards, asbestos slate plates, or concrete structures having a predetermined air layer. It is processed.

However, such a soundproofing treatment has a drawback that the soundproofing performance is inferior to the soundproofing effect per unit weight, the construction of a structure is complicated, and the air which takes a long term and a large cost are required.

In view of the above situation, the inventors of the present invention aim to provide a soundproofing material and a soundproofing method excellent in soundproofing with a simple structure and a short period of time.

In order to solve the above technical problem, the inventors of the present invention, as a result of earnest research, sound-proof sound-filled fibrous material filled in the concave part of the vibration damping sheet shape molded into any uneven shape, or the vibration damping sheet shape having any unevenness integrated with the nonwoven fabric. The treatment material was found to be lightweight, sound-absorbing and sound-absorbing, and easy to assemble and to complete the present invention.

When explaining the temporary aspect of this invention, the raw material composition which comprises a damping sheet is kneaded, and it extrudes from an extruder, and then rolls and cuts it, and obtains the original fabric of a damping sheet. A loft nonwoven fabric is placed on the obtained raw unit, and heat-pressurized using a mold having a predetermined uneven shape to obtain an integrated product of the damping sheet having the uneven shape and the loft nonwoven fabric. Subsequently, when the fibrous material is filled in the concave portion of the monolith of the vibration damping sheet and the loft nonwoven fabric having an irregular concave shape and adhered with a rigid plate and an adhesive, the soundproof treatment material of the present invention is obtained.

The damping sheet-like article used in the present invention is formed by mixing a spring material having a relatively high specific gravity with a bituminous material, a vulcanized rubber or a thermoplastic synthetic rubber as a main component.

Bituminous material may be any asphalt, and straight asphalt, bronze asphalt, mixtures thereof, or recycled asphalt are used. As vulcanized rubber components, for example, nitrile rubber, polybutadiene, polyisoprene, styrene-butadiene rubber, natural rubber And recycled rubber.

The thermoplastic synthetic rubber is preferably referred to as a thermoplastic elastomer, and has a rubber elasticity in a temperature range of low temperature from room temperature to room temperature. The thermoplastic synthetic rubber is a material that can be molded by flowing at high temperature (over 100 ° C) to exhibit plasticity. For example, as the thermoplastic elastomer, a block copolymer of styrene-butadiene-styrene or styrene-isoprene-styrene, in particular, polystyrene (thermoplastic component) and glass transition point of which the amorphous polymer of glass transition point (Tg) is higher than or equal to room temperature is below room temperature And block copolymers with polybutadiene or polyisoprene (rubber component), which are amorphous polymers. As a molecular weight, the use of about 10,000-300,000 is preferable, More preferably, it is a thermoplastic elastomer which has a molecular weight of about 50,000-80,000. In addition, the component ratio (weight ratio) of the polystyrene powder of the diblock copolymer and polybutadiene or polyisoprene is preferably 5:95 to 50:50. Moreover, as a thermoplastic synthetic rubber which can be used, polyurethane thermoplastic elastomer and polyether polyester obtained by the polyaddition reaction of diols, such as various polyether or polyester, and aromatic diisocyanate, Block polymer-based thermoplastic elastomers, trans-1.4-polypropylene, 1,2-polybutadiene thermoplastic polyolefins, butyl-graft-ethylene, mixtures of EPDM and polyolefins, and reactive materials.

Examples of the filler include clay, tar, calcium carbonate, asbestos, barium sulfate, magnesium carbonate, lead powder, lead carbonate, or lead compounds such as lead sulfate, iron or iron compounds, barium carbonate, diatomaceous earth, mica and sulfuric acid. Zinc compounds, such as alumina, graphite, molybdenum sulfide, zinc powder, or zinc carbonate, etc. can be used. Needless to say, conventionally used flame retardants, antioxidants, heat stabilizers, vulcanizing agents, crosslinking agents, vulcanization accelerators, activators, dispersants, antioxidants, reinforcing agents, softeners, coloring agents and the like are used. It is preferable that the compounding ratio of a main component material and a filler component should be 1: 0.5-1: 2.5. If the filler compounding amount is 0.5 or less, sufficient sound insulation is not desired, and if the filler compounding amount is excessively 2.5 or more, breakage or cracking occurs during molding, which is not preferable. The mixing method of each material is not specifically limited, It mixes using a Banbury mixer, a roll, etc. The obtained mixture is molded into a desired shape by an extrusion molding machine or a calendering machine, for example, as a rubber sheet shape before vulcanization, using a heat press molding machine, and vulcanized. The temperature at the time of shaping | molding is about 130-230 degreeC, shaping | molding in pressure about 1-100 kg / cm <2>, and shaping | molding time about 1 to 10 minutes can be illustrated.

The pressure-sensitive adhesive may be applied to the vibration damping sheet shape thus obtained, and the pressure-sensitive adhesive used in this case may be a conventionally well-known adhesive, and for example, a pressure-sensitive adhesive composed of synthetic rubber, gum, petroleum resin, solvent, and the like. Can be. The method of apply | coating these adhesive agents is arbitrary, and it is preferable to use a spray, a roll coater, or a flow coater.

In the present invention, the loft nonwoven fabric which is integrally formed with the vibration damping sheet-shaped material as necessary contains the thermosetting synthetic resin as a binder because it requires mold holding properties after the heat pressing molding after being integrated or provided to the heat pressing molding in advance. It is necessary to be scattered in the state of the uncured loft nonwoven fabric. If this requirement is satisfied, the discontinuous fiber material, which is the addressing material of the loft nonwoven fabric, may be a combination of one or two or more selected from animal, vegetable, mineral, synthetic resin, and the like, and the use of thermoplastic synthetic resin as a binder does not interfere at all. .

Generally, it consists of one or two or more types of discontinuous fiber materials selected from cotton wool, half hair, synthetic resin fiber crumb, and thermosetting synthetic resins such as phenolic resin. The state before molding is usually 8 to 40 mm in thickness and 400 in cotton density. It is a sheet-like thing of -4000 g / m <2>.

If necessary, non-flammable flame retardant treatment, waterproofing treatment, water repellent treatment, and anti-hairing treatment can be optionally performed on the loft nonwoven fabric. These treatments may be performed after heating molding. For example, spraying with a water repellent agent such as aqueous sodium silicate solution, silicone-based, fluorine-based, organophosphorus compound, organic sulfur halide compound, inorganic antimony-amide compound, flame retardant such as sodium fluoride silicate, adhesion of non-flammable thin nonwoven fabric, etc. Can be mentioned.

Examples of treatment agents used in the flame retardant, waterproof, and decorative senses include flaky nonwoven fabrics, flame retardant fabrics, and fabrics such as Saran cloth, adhesion of thin plastic films of 0.01 m / m or less, phosphoric acid compounds, halogenated organic sulfur compounds, and sodium floor silicates. Sprays of single or combination of flame retardant, silicone, fluorine-based waterproofing and the like are common.

When a space portion is formed between the molded vibration damping sheet shape and the sheet material of the present invention, it is preferable to fill the space with a fibrous material, and it is preferable to use a loft nonwoven fabric, a needle felt or a glass fiber mat. Such a fibrous material may be cut into shapes similar to those of the formed vibration damping sheet shape, and may be adhered or simply filled with the vibration damping sheet shape, or may be adhered to a round or square shape in an appropriate amount. It is preferable to fill in the recessed part whole surface, and the edge part may be superimposed in the case of sticking and filling a plurality of round and square objects. It is also possible to use an arbitrary portion by stacking two sheets or three sheets, and in this case, the distance between the two portions of the vibration damping sheet shape and the wave material may be molded.

The rigid plate material used in the present invention is a plate that is used as a normal plate material such as steel sheet, slate plate, gypsum board, aluminum plate and the like, and is not particularly limited.

The method and means for joining the above-described molded articles to these plates may be arbitrarily used. It is preferable to join the plates by directly contacting any part of the flat part of the molded article. It is good to make it stick together, and even if the arbitrary side of a board | plate material is bend | folded, it will be a C-shape, and the flat part of this molded object may be joined to this part, and the effect of this invention can be exhibited.

In addition, there is no problem in arbitrarily constructing the molded body not only on one side of the plate but also on both sides.

Although the soundproofing material of the present invention is lightweight, it is excellent in soundproofing and is easy to manufacture and construct.

The following examples provide more detailed description. Naturally, the present invention is not limited only to the following examples.

Example 1

100 parts by weight of a rubber component consisting of 70% by weight of tire reclaimed rubber and 30% by weight of styrene-butadiene rubber, 130 parts by weight of calcium carbonate, 20 parts by weight of asbestos, 6 parts by weight of process oil, 3 parts by weight of zinc, and 3 parts by weight of sulfur And 0.5 parts by weight of the vulcanization accelerator were kneaded with a Beverly mixer, extruded from an extruder, and then rolled through a calendar roller and cut to obtain a fabric before molding having a thickness of 3 mm and a specific gravity of about 1.5.

The obtained fabric was pressed for 3 minutes at a pressure of 10 kg / cm 2 using a mold heated to 160 ° C to obtain an uneven shaped body.

100 parts by weight of fiber components consisting of 50% by weight of glass fibers and 50% by weight of synthetic resin fibers are opened and mixed, and 25 parts by weight of phenolic resin components are spray-mixed to make a polysilicon with a polyester forming machine, followed by heating at 180 ° C. A loft nonwoven fabric having a thickness of 25 m / m and a surface density of 955 g / m 2 was obtained.

The loft nonwoven fabric was filled in the concave portion of the concave-convex molded body to obtain a composite. Subsequently, when the obtained composite material was mounted on the steel sheet, it was confirmed that the resultant soundproofing material was excellent in weight and soundproofing.

Example 2

100 parts by weight of the fiber component consisting of 40% by weight of half hair and 60% by weight of cotton wool are mixed with dog-opening and spray-mixed with 25 parts by weight of a phenolic resin powder having a reaction temperature of 200 ° C., and then blended into a flake forming machine, followed by a heating furnace at 180 ° C. The loft nonwoven fabric of thickness 30m / m and surface density 1150g / m <2> was obtained through this.

The loft nonwoven fabric was placed on the fabric obtained in Example 1, and pressed using a mold heated at 200 ° C. at a pressure of 13 kg / cm 2 for 5 minutes to obtain an uneven shaped body.

Next, the recessed part of this uneven | corrugated molded object was filled with the loft nonwoven fabric demonstrated in Example 1 according to Example 1, and the composite was obtained.

When the obtained composite material was mounted on the slate plate, it was confirmed that it is light in weight and excellent in soundproofing.

Example 3

40 parts by weight of tar, 9 parts by weight of process oil and 75 parts by weight of asbestos are mixed with a mixing roll and extruded from an extruder, based on 100 parts by weight of the main component consisting of 75% by weight of bronze asphalt and 25% by weight of styrene-butadiene rubber. After calender roller rolling and cutting, a fabric of 2 mm thickness and a specific gravity of about 1.3 was obtained.

The obtained fabric was pressed for 2 minutes at a pressing force of 8 kg / cm 2 by using a mold heated to 140 ° C to obtain an uneven shaped body.

Next, the concave portion of the uneven shaped body was filled with the loft nonwoven fabric described in Example 1 in accordance with Example 1 to obtain a composite.

When the obtained composite material was mounted on the slate plate, it was confirmed that it is light in weight and excellent in soundproofing.

Claims (2)

A sound-proofing material characterized by filling a concave portion of a vibration damping sheet shape having an irregular shape or a vibration damping sheet shape having an uneven shape integral with the nonwoven fabric. A soundproof treatment method comprising filling a fibrous material between a vibration damping sheet shape having an uneven shape or a vibration damping sheet shape having an uneven shape integrated with a rigid plate.