CN103950507A - Composite type marine noise reduction structure - Google Patents

Abstract

The invention discloses a compound noise reduction structure for ships. A damping layer, a steel sheet or steel plate and a coating layer are sequentially laid on a horizontal steel deck. The composite structure provided by the invention can greatly weaken or eliminate noise. The damping layer has good adhesion, good damping and vibration reduction performance, impact resistance, salt spray resistance, sea water resistance, cold and heat resistance, green and environmental protection; steel sheet or steel plate has a large unit area mass, and the material is heavy and dense, so The sound insulation effect is excellent; the covering layer can effectively protect the deck, achieve the effect of heat insulation and light weight.

Description

A Composite Marine Noise Reduction Structure

technical field

The invention relates to a ship deck structure, in particular to a composite ship noise reduction structure.

Background technique

The 91st Maritime Safety Committee of the International Maritime Organization (IMO) passed a resolution on the amendment to the SOLAS Convention, which will take effect on July 1, 2014, requiring that the ship's structure should comply with the recently reviewed and approved "Noise Level Regulations on Board Ships" to protect personnel Protect from noise. This rule is applicable to new ships above 1600 tons, and the sound insulation between living quarters should be considered, so that even if activities such as music, conversation, loading and unloading are carried out in adjacent spaces, rest and entertainment can still be obtained. The rules specify the noise limit values of different places, including the weighted sound insulation index from the living cabin to the living cabin is 35, the weighted sound insulation index of the dining room, entertainment room, public place and from the entertainment area to the living cabin and medical room is equal to 45. The weighted sound insulation index from the corridor to the cabin is equal to 30, and the weighted sound insulation index from the cabin to the cabin with traffic doors is equal to 30. the

Since the existing structures in these positions in the ship structure are directly laid deck coverings on the steel plates, it is difficult to meet the requirements of the IMO regulations. Therefore, these existing structures must be modified to meet the requirements of the IMO regulations.

Contents of the invention

Based on the above problems, the object of the present invention is to provide a composite marine noise reduction structure, which is a composite marine noise reduction structure with good sound insulation performance, impact resistance, salt spray resistance, non-combustibility, light weight and wear resistance, and environmental protection. structure.

In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problems is:

The utility model relates to a composite marine noise reduction structure, in which a damping layer, a steel sheet or a steel plate and a coating layer are sequentially laid on a horizontal steel deck.

The damping layer is a polyurea elastomer layer with a thickness of 4-6mm. Polyurea elastomer has good damping performance, high adhesion, impact resistance, salt spray resistance, sea water resistance, cold and heat resistance, and is environmentally friendly.

The steel sheet or steel plate is bonded on the damping layer by a damping adhesive. The steel sheet or steel plate has a large unit area mass and is heavy and compact. When sound waves are incident, they can only stimulate the tiny vibration of the interlayer, making the The sound wave energy (transmitted sound energy) radiated to another space is very small, so the sound insulation is large and the sound insulation effect is good.

The damping adhesive is a graft copolymer of methyl methacrylate (MMA) and chloroprene rubber (CR), which is applied 2 to 3 times with a thickness of 0.1 to 0.15 mm.

The thickness of the dressing layer is 40-45mm.

Compared with prior art, the beneficial effect of the present invention is:

The invention is composed of four layers of materials, and the vibration and noise are greatly weakened or eliminated after compounding. The damping layer has good adhesion, high damping performance, impact resistance, salt spray resistance, sea water resistance, and is environmentally friendly; the steel sheet or steel plate has a large unit area mass, and the material is heavy and dense, so the sound insulation effect is excellent; the dressing layer Including inorganic binder and dressing body, it can effectively protect the deck and achieve the effect of heat insulation and light weight.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1, a composite marine noise reduction structure, on a horizontal steel deck 01, a damping layer 02, a steel sheet or steel plate 03 and a coating layer 04 are sequentially laid.

Steel deck 01 has good hardness and high strength. The polyurea elastomer layer is directly laid on the steel deck 01 as the damping layer 02, and the flame-retardant spray polyurea elastic waterproof coating of the commercially available brand "Yuhong" SPUA-352 is selected, with a thickness of 4mm. After the polyurea elastomer is fully dried and cured, the damping adhesive is brushed, and the steel sheet or steel plate is bonded to the damping layer through the damping adhesive to obtain the steel sheet or steel plate layer 03. The damping adhesive used is a graft copolymer of methyl methacrylate (MMA) and chloroprene rubber (CR). When coating steel sheets or steel plates, the glue is applied three times, and the thickness of the glue layer is 0.15mm. Finally, the dressing layer 04 is laid, and the ultra-light dressing produced by Taicang Lanyan Deck Dressing Coating Co., Ltd. is selected, and the thickness of this layer is 45mm.

Referring to the GB/T19889.10-2006 standard, the composite marine noise-reducing structure prepared was tested, and the sound insulation weighted index was 46dB.

Example 2

The composite marine noise reduction structure is the same as that of Example 1, except that the polyurea elastomer layer is directly laid on the steel deck 01 as the damping layer 02, and the commercially available flame-retardant "Yuhong" SPUA-352 is selected. Type spray polyurea elastic waterproof coating with a thickness of 5mm. Graft copolymer of methyl methacrylate (MMA) and chloroprene rubber (CR), when coating steel sheets or steel plates, apply glue 3 times, and the thickness of the glue layer is 0.1mm. Lay the dressing layer 04, choose the ultra-light dressing produced by Taicang Lanyan Deck Dressing Coating Co., Ltd., and the thickness of this layer is 40mm.

With reference to the GB/T19889.10-2006 standard, the composite marine noise-reducing structure prepared was tested, and the sound insulation weighted index was 45dB. the

Claims (5)

1. a compound type denoising structure peculiar to vessel, is characterized in that, is laid with successively damping layer (02), steel disc or steel plate (03) and dressing layer (04) on the steel deck (01) of level.

2. a kind of compound type according to claim 1 denoising structure peculiar to vessel, is characterized in that, described damping layer (02) is SPUA layer, and coating thickness is 4 ~ 6mm.

3. a kind of compound type according to claim 1 denoising structure peculiar to vessel, is characterized in that, described steel disc or steel plate (03) are by damping adhesive and damping layer (02) bonding.

4. a kind of compound type according to claim 3 denoising structure peculiar to vessel, is characterized in that, described damping adhesive is the graft copolymer of methyl methacrylate and poly-chloroprene rubber, gluing 2 ~ 3 times, and bondline thickness is 0.1 ~ 0.15mm.

5. a kind of compound type according to claim 1 denoising structure peculiar to vessel, is characterized in that, described dressing layer (04) thickness is 40 ~ 45mm.