JP5162172B2 - Marine damping material and damping structure - Google Patents

Description

  The present invention relates to a marine vibration damping material and a vibration damping structure, and more particularly to a marine vibration damping material and a vibration damping structure having excellent vibration resistance and fire resistance.

  Conventionally, in order to ensure the vibration damping performance of a ship, a method of repeatedly applying a coating type damping material such as an epoxy resin damping material on the walls, floors, and ceilings of engine rooms and living rooms has been taken. However, since it is necessary to take a drying time between overcoating, the construction time is long and the construction cost is high.

  Further, in order to ensure the fire resistance performance in addition to the vibration suppression performance to the ship, a process for further imparting the fire resistance performance on the coating type vibration damping material may be required. For example, Patent Document 1 proposes that a glass fiber fire-proof layer and a metal film fire-proof layer are provided on the outer surface of an epoxy vibration damping material applied to the structure or equipment of a ship.

Patent Document 2 describes a structure in which a damping material and a steel plate made of a viscoelastic material are sandwiched between a floor steel plate and a deck composition layer, and the damping material and the steel plate, the steel plate and the deck composition layer are bonded to each other by an adhesive. What has been adhered through layers has been proposed.
JP 2005-205816 A Japanese Utility Model Publication No. 5-037678

  Usually, painting on a ship is performed by directly applying the paint manually, so that the painting work is troublesome and the finish may be deteriorated depending on the skill level of the operator. In addition, there is a risk that the paint may stain surrounding objects other than the construction object during work.

  In addition, there is a problem that the finished coating film thickness is increased, and the room space and the piping space behind the ceiling are reduced accordingly.

  An object of the present invention is to provide a new vibration damping and fireproofing means capable of solving the above-described problems caused by painting.

  The inventors of the present invention provide a vibration damping material composed of a constraining layer and a resin layer, in which the organic mass of the resin layer is equal to or less than a predetermined value. And found that an excellent marine damping material and damping structure can be provided.

According to the first aspect of the present invention, the vibration damping material including the constraining layer and the adhesive resin layer is directly covered with at least a part of the ship constituent material on the adhesive resin layer side as an adherend. The constraining layer is made of a steel plate having a thickness of 0.8 mm or more and 1.2 mm or less , the resin layer has a thickness of 0.5 to 1.0 mm , and the organic mass of the resin layer is 0.00. ² to 0.6 kg / m ² , in a state where the damping material is directly attached to an adherend made of a steel plate having a thickness of 6 mm, and in accordance with JIS G 0602 “Test method of vibration damping characteristics of damping steel plate”. A ship damping structure characterized in that a loss factor by a compliant test method is 0.1 or more.

  In the invention according to claim 2, the deck composition layer is directly laminated on the surface of the constraining layer opposite to the resin layer (that is, the damping material composed of the constraining layer and the resin layer is disposed on the constraining layer side). The ship damping structure according to claim 1, wherein the structure is sandwiched between a deck composition layer and a floor steel plate on the resin layer side.

  In the invention according to claim 3, the resin layer has a chlorine content of 20 to 70% by weight and a chlorine-containing thermoplastic resin having a weight average molecular weight of 400,000 or more, an average carbon number of 12 to 50, and a chlorination degree of 30 to 30. 3. The ship vibration damping structure according to claim 1 or 2, comprising a resin composition composed of 200 to 1000 parts by weight of 75% by weight of chlorinated paraffin.

  The constraining layer constituting the marine damping material according to the present invention is not particularly limited as long as it is composed of an inorganic material, and the material is not particularly limited, such as a steel plate, stainless steel, aluminum, gypsum, and concrete. A steel plate with a high elastic modulus is desirable for improving vibration damping.

  The thickness of the restraining material is desirably 10% or more of the thickness of the adherend so that the loss factor is 0.1 or more in a state where the damping material is provided on the constituent material of the ship.

The restraint material may be surface-coated. The paint is not particularly limited, such as a paint acrylic resin paint, a polyester resin paint, a silicon resin paint, an amino / alkyd resin paint, a vinyl chloride resin paint, a fluororesin paint, an epoxy resin paint, and a urethane resin paint. The weight of the paint is not particularly limited, but is preferably an amount with an organic mass of 65 g / m ² or less on one side.

The material of the resin layer constituting the marine vibration damping material according to the present invention is not particularly limited, such as rubber-based, plastic-based, and asphalt-based, but for the required fire resistance, its organic mass is 0.6 kg / m ² or less. Moreover, in order to maintain the performance as a damping material, the organic mass is desirably 0.2 kg / m ² or more.

  Throughout the claims and the entire specification, the “organic mass” means a composition having a C—H bond among the compositions constituting the resin layer. For example, JIS K 0067 “Chemical product weight loss and residue test” It can be measured by ignition loss measured in the ignition loss test of “Method”. The deck composition refers to a mixture composed of sand, water, cement and rubber liquid.

  In order to make the loss factor 0.1 or more in the state where the damping material is provided on the adherend which is a constituent material of the ship in the invention according to claim 1, and in the invention according to claim 2, the damping material is In order to achieve a loss factor of 0.1 or more in a state where the deck composition layer on the constraining layer side and the floor steel plate on the resin layer side are sandwiched, the resin layer has a chlorine content of 20 to 70% by weight and a weight. 100 parts by weight of a chlorine-containing thermoplastic resin having an average molecular weight of 400,000 or more, chlorinated paraffin having an average carbon number of 12 to 50 and a chlorination degree of 30 to 75% by weight (particularly those having a chlorination degree of 70% by weight or more It is desirable that the resin composition is composed of 200 to 1000 parts by weight of chlorinated paraffin (occupying 70% by weight). As such a resin layer, 100 parts by weight of chlorinated polyethylene obtained by post-chlorination of high-density polyethylene by a water suspension method, and 400 parts by weight of chlorinated paraffin (chlorine content 50% by weight, number average carbon number 14). And 400 parts by weight of calcium carbonate were kneaded at 120 ° C. using a roll kneader, and the resulting resin kneaded product was pressed at 140 ° C. and formed into a sheet having a thickness of 1.0 mm. It is done.

  The resin layer includes a polymer mainly composed of an acrylic monomer or a styrene monomer and a plasticizer having a viscosity at 20 ° C. of 800 to 100,000 cps, and constitutes the SP value of the plasticizer and the polymer. What was comprised with the transparent resin composition whose absolute value of the difference with SP value of a monomer component is 0.9 or less is also preferable. Examples of such a composition include polymethacrylic acid methyl ester (trade name “Dynar BR-88” manufactured by Mitsubishi Rayon Co., Ltd., methyl methacrylate SP value = 9.5, Mw = 480, as an acrylic homopolymer. 000) 100 parts by weight and 200 parts by weight of chlorinated paraffin (manufactured by Asahi Denka Kogyo Co., Ltd., trade name “Adekasizer E-500”, viscosity 1,000 cps, SP value = 9.3) as a plasticizer What was obtained by kneading in (Irie Iron Works Co., Ltd.) is preferably used (see JP 2004-263166 A).

  As another example of the resin layer, a resin layer composed of a chlorine-containing thermoplastic resin having a chlorine content of 20 to 70% by weight and an epoxy plasticizer can be given. As such a resin layer, for example, 100 parts by weight of chlorinated polyethylene (“Elaslene 301MA” manufactured by Showa Denko KK, chlorine content: 35% by weight, hereinafter referred to as “CPE1”), and epoxidized 1, 200 parts by weight of 2-polybutadiene (“BF-1000” manufactured by Asahi Denka Co., Ltd., hereinafter referred to as “Epoxy 1”) was kneaded at 100 ° C. using a roll kneader, and the resulting resin composition was pressed at 120 ° C. Then, a sheet having a thickness of 1000 μm is suitably used (see Japanese Patent Application Laid-Open No. 2004-250639).

A floor composed of a deck composition is constructed on a floor steel plate on the floor of a normal living room. When using the damping material according to the present invention, the damping material is constructed on the floor deck, and the deck composition is constructed thereon. As a result, the deck composition can function as a constraining layer to further improve the damping performance of the damping material, and can be finished in the same manner as a normal floor. In addition, the damping material of the present invention is part 6 of the International Maritime Organization (IMO) Maritime Safety Committee Resolution 61 (67) “International Code for Application of Fire Test Methods”, “Primary Deck Flooring Test” (IMO General Assembly Resolution A. 653 (17) “Primary deck flooring test”), it can be installed on the floor deck. The deck composition is not particularly limited, but is preferably about 6 to 12 mm for improving leveling and vibration control.

  The adherend in the present invention constitutes a part of a ship. For example, the engine room of a ship, a wall such as a living room, a floor, a ceiling, an interior panel, a sennsui tank, a staircase, an air conditioning pipe, and vibration are problems. An electronic controller or the like in which a problem occurs is mentioned, and the vibration damping structure for a ship according to the present invention is configured by depositing the resin layer of the vibration damping material of the present invention on these predetermined locations. In particular, the interior panel usually has a structure in which a sound absorbing material such as glass wool or rock wool is sandwiched between thin steel plates (thickness of about 0.6 to 1.0 mm), and the damping material of the present invention is attached to the thin steel plate. Therefore, it is possible to provide an interior panel having excellent soundproofing properties.

The vibration damping structure for a ship according to the present invention is such that the vibration damping material including the constraining layer and the adhesive resin layer has at least a part of the constituent material of the ship as an adherend on the adhesive resin layer side. While being directly applied, the constraining layer is composed of a steel plate having a thickness of 0.8 mm or more and 1.2 mm or less , the resin layer has a thickness of 0.5 to 1.0 mm , and the organic mass of the resin layer is In a state where the damping material is directly attached to an adherend made of a steel plate having a thickness of 0.2 mm to 0.6 kg / m ² and JIS G 0602 “Test method of vibration damping characteristics of damping steel plate” The loss coefficient according to the test method conforming to "1" is 0.1 or more, and excellent fire resistance performance as well as excellent vibration damping performance can be exhibited without using any paint. Therefore, for example, since the paint is directly applied manually, the painting work is troublesome, and all the problems caused by painting such as poor finish depending on the skill level of the operator can be solved.

  In addition, the marine damping material according to the present invention is a part of “Surface flammability test” (IMO General Assembly resolution) of International Maritime Organization (IMO) Maritime Safety Commission resolution 61 (67) “International Code on Application of Fire Test Methods”. A. 653 (16) “Surface flammability test method for bulkheads, ceilings and deck finishing materials”), and with a single product specification, primary deck flooring (ie as flooring material) It has fireproof performance that can be used not only as a certified material) but also as a flame retardant upholstery material (that is, a certified material as a wall surface material or a ceiling surface material).

  Next, in order to specifically explain the present invention, some examples of the present invention and comparative examples for showing comparison with the examples will be given.

Examples 1 and 2 and Comparative Examples 1 and 2
The following materials were prepared.

Base material: Steel plate (thickness 6mm)
Restraint layer: Color steel plate (thickness 0.8mm and 1.2mm)
Resin layer: 100 parts by weight of chlorinated polyethylene obtained by post-chlorination of high-density polyethylene by a water suspension method (weight average molecular weight 500,000, chlorine content 40% by weight, crystallinity 10 J / g measured by DSC method) , 400 parts by weight of chlorinated paraffin (manufactured by Ajinomoto Fine Chemical Co., trade name “Empara“ K50 ”), chlorine content 50% by weight, number average carbon number 14), calcium carbonate (manufactured by Maruo Calcium Co., Ltd., trade name“ R heavy coal ” )) 400 parts by weight were kneaded at 120 ° C. using a roll kneader, and the resulting resin kneaded product was pressed at 140 ° C. to form a sheet having a thickness of 1.0 mm (thickness 0.5). -1.0 mm, organic mass 0.6-1.2 kg / m < ² >).

  As shown in FIG. 1, a damping material (1) composed of a constraining layer (3) and a resin layer (2) was provided on the base material (4) on the resin layer (2) side.

Examples 3 and 4
The following materials were prepared.

Base material: Steel plate (thickness 6mm)
Restraint layer: Color steel plate (thickness 0.8mm and 1.2mm)
Resin layer: 100 parts by weight of chlorinated polyethylene obtained by post-chlorination of high-density polyethylene by a water suspension method (weight average molecular weight 500,000, chlorine content 40% by weight, crystallinity 10 J / g measured by DSC method) , 400 parts by weight of chlorinated paraffin (manufactured by Ajinomoto Fine Chemical Co., trade name “Empara“ K50 ”), chlorine content 50% by weight, number average carbon number 14), calcium carbonate (manufactured by Maruo Calcium Co., Ltd., trade name“ R heavy coal ” )) 300 parts by weight were kneaded at 120 ° C. using a roll kneader, and the resulting resin kneaded product was pressed at 140 ° C. to form a sheet having a thickness of 1.0 mm (thickness 0.5). -1.0 mm, organic mass 0.6-1.2 kg / m < ² >).

  Deck composition layer: A mixture of sand, water, cement and rubber solution (a thickness of 6-12 mm).

  As shown in FIG. 2, a damping material (1) composed of a constraining layer (3) and a resin layer (2) is disposed on the base material (5) on the resin layer (2) side, and the constraining layer (3 The deck composition layer (6) was provided on the surface opposite to the resin layer (2).

Reference example 1
It implemented similarly to the case of the said Example 3 and 4 except having used the color steel plate (thickness 0.4mm) as a constraining layer.
Evaluation test
The following evaluation tests were performed on the structures of Examples 1 to 4, Reference Example 1 and Comparative Examples 1 and 2.

a) Loss test Test method: Conforms to JIS G 0602 “Test method of vibration damping characteristics of damping steel plate”.

b) Fire Safety Test Test Method: International Maritime Organization (IMO) Maritime Safety Commission Resolution 61 (67) “International Code for Application of Fire Test Methods” Part 5 “Surface Flammability Test” and IMO General Assembly Resolution A.1. 653 (16) “Test method for surface flammability of bulkhead, ceiling and deck finishing materials”.

The test results are shown in Table 1 together with the structure of the damping material.

  As is apparent from Table 1, the vibration damping structure according to the present invention has an excellent loss factor and has passed the fire safety test.

It is sectional drawing which shows the damping structure comprised in Examples 1 and 2 and Comparative Examples 1 and 2. It is sectional drawing which shows the damping structure comprised in Example 3 and 4 and the reference example 1. FIG.

(1) Damping material (2) Resin layer (3) Restraint layer (4) Base material (5) Base material (6) Deck composition layer

Claims (3)

The vibration damping material composed of the constraining layer and the adhesive resin layer is directly attached on the adhesive resin layer side with at least a part of the constituent material of the ship as an adherend, and the constraining layer includes It is composed of a steel plate having a thickness of 0.8 mm or more and 1.2 mm or less , the resin layer has a thickness of 0.5 to 1.0 mm , and the organic mass of the resin layer is 0.2 to 0.6 kg / m ^2. The loss factor by a test method in accordance with JIS G 0602 “Test method for vibration damping characteristics of vibration-damping steel plate” in a state where the damping material is directly attached to an adherend made of a steel plate having a thickness of 6 mm. Ship vibration control structure characterized by being 0.1 or more. The ship damping structure according to claim 1, wherein a deck composition layer is further directly laminated on a surface of the constraining layer opposite to the resin layer. The resin layer comprises 100 parts by weight of a chlorine-containing thermoplastic resin having a chlorine content of 20 to 70% by weight and a weight average molecular weight of 400,000 or more, and a chlorinated paraffin 200 having an average carbon number of 12 to 50 and a chlorination degree of 30 to 75% by weight. The ship vibration damping structure according to claim 1 or 2, characterized in that it is made of a resin composition consisting of ~ 1000 parts by weight.

Images