A fiber-reinforced wood-plastic composite foam sound-absorbing board

A wood-plastic composite material and fiber-reinforced technology, which is applied in the field of fiber-reinforced wood-plastic composite foam sound-absorbing panels and sound-absorbing panels, can solve the problems of limited application fields, ordinary sound insulation effects, and difficulty in construction and maintenance, so as to increase the overall Excellent strength, sound insulation effect, light weight and high hardness

Active Publication Date: 2021-03-30
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-metal material sound-absorbing panels also have problems such as ordinary sound insulation effect and heavy weight, which make it difficult to construct and maintain, and limit their application fields.

Method used

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  • A fiber-reinforced wood-plastic composite foam sound-absorbing board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides a fiber-reinforced wood-plastic composite material foamed sound-absorbing board, which includes two skin layers and a foam layer located between the two skin layers. Among them, the epidermis is compact and smooth, with high hardness and a thickness of 15-35mm. The foam layer has hollow micropores, which can play the role of sound absorption and sound insulation. In this embodiment, the thickness of the epidermis is 20mm, and the thickness of the foam layer 100mm.

[0023] The skin layer is made of the following raw materials in parts by weight: wood powder 40, polyethylene resin particles 25, skin layer coupling agent 2, anti-aging additive 2, flame retardant 2, lubricant 2 and light calcium carbonate 3. The preparation method of the skin layer is: step 1, mixing wood powder, polyethylene resin particles, skin layer coupling agent, anti-aging additive, flame retardant, lubricant and light calcium carbonate at 80 ° C, and then cooling, Form a p...

Embodiment 2

[0031] This embodiment provides a fiber-reinforced wood-plastic composite material foamed sound-absorbing board, which includes two skin layers and a foam layer located between the two skin layers.

[0032]The skin layer is made of the following raw materials in parts by weight: wood powder 50, polyethylene resin particles 30, skin layer coupling agent 3, anti-aging additive 3, flame retardant 2, lubricant 2 and light calcium carbonate 3. The preparation method of the skin layer is as follows: step 1, mixing wood powder, polyethylene resin particles, skin layer coupling agent, anti-aging additive, flame retardant, lubricant and light calcium carbonate at 90 ° C, and then cooling, Form a protective layer on the surface of the wood powder to prevent carbonization, and the protective layer can be solidified by cooling; step 2, heat the mixture obtained in step 1 to 160°C to melt; step 3, the mold is pre-cooled with 8°C water, and then step 2 The resulting melt is extruded into a ...

Embodiment 3

[0040] This embodiment provides a fiber-reinforced wood-plastic composite material foamed sound-absorbing board, which includes two skin layers and a foam layer located between the two skin layers.

[0041] The skin layer is made of the following raw materials in parts by weight: wood powder 45, polyethylene resin particles 20, skin layer coupling agent 3, anti-aging additive 3, flame retardant 3, lubricant 1 and light calcium carbonate 2. The preparation method of the skin layer is as follows: step 1, mixing wood powder, polyethylene resin particles, skin layer coupling agent, anti-aging additive, flame retardant, lubricant and light calcium carbonate at 90 ° C, and then cooling, Form a protective layer on the surface of the wood powder to prevent carbonization, and the protective layer can be solidified by cooling; step 2, heat the mixture obtained in step 1 to 145°C to melt; step 3, the mold is pre-cooled with 3°C water, and then step 2 The resulting melt is extruded into a...

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Abstract

The invention discloses a fiber-reinforced wood-plastic composite foaming sound absorption board, which comprises two skin layers and a foaming layer positioned between the two skin layers, wherein the skin layers are prepared from the following raw materials in parts by weight: 40-50 parts of wood powder, 20-30 parts of polyethylene resin particles, 2-3 parts of skin layer coupling agents, 2-3 parts of anti-aging additives, 2-3 parts of flame retardants, 1-2 parts of lubricants and 2-3 parts of light calcium carbonate; and the foaming layer is prepared from the following raw materials in parts by weight: 7-8 parts of chopped waste wood-plastic composite fiber, 1-2 parts of foaming layer coupling agents, 4-5 parts of foaming agents, 1-2 parts of foaming regulators and 7-9 parts of polyurethane. The board has the advantages of light weight, large hardness, excellent sound insulation effect and the like.

Description

technical field [0001] The invention belongs to the field of sound insulation barriers, and relates to a sound-absorbing board, in particular to a fiber-reinforced wood-plastic composite foamed sound-absorbing board. Background technique [0002] Sound barriers are mainly used for sound insulation and noise reduction of roads, expressways, elevated composite roads and other noise sources. At present, there are many types of sound-absorbing and insulating panels used for sound barriers. According to the materials, they can be mainly divided into metal-based sound-absorbing panels and non-metallic sound-absorbing panels. The operating environment of railway sound barriers is harsh, although metal sound barriers can meet Sound absorption, sound insulation and mechanical requirements, but the durability is poor, and the general service life is about ten years. Using non-metallic materials can save costs on the one hand, and greatly increase the service life of the sound barrier ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/20B32B33/00B32B21/02B32B27/32B32B27/20B32B27/40B32B3/24B32B3/12C08L75/04C08L101/00C08L97/02C08J9/10B29C69/02B29C44/12B29L7/00B29L9/00G10K11/162G10K11/168
CPCB29C44/12B29C69/02B29L2007/002B29L2009/00B32B3/12B32B3/266B32B5/20B32B5/245B32B21/02B32B21/047B32B33/00B32B2250/03B32B2250/40B32B2262/14B32B2264/0257B32B2264/065B32B2264/12B32B2266/0278B32B2307/102B32B2419/00C08J9/0061C08J9/103C08J2203/04C08J2375/04C08J2400/30C08J2497/02G10K11/162G10K11/168
Inventor 高淑洁顾斯雯肖佳颖顾俊高登红
Owner NANJING INST OF TECH
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