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Wood plastic substrate of highway noise barrier

A highway and sound barrier technology, applied in the chemical industry, can solve the problems of irregular maintenance and high cost, and achieve the effect of small shrinkage or expansion

Inactive Publication Date: 2011-01-12
南京聚锋新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used road sound barriers include tempered glass sound barriers, ceramic plate sound barriers, cement wood chip sound-absorbing panels, micro-perforated plate sound-absorbing barriers, and polyester sound-insulating panels. The disadvantages of the above sound barriers are: high cost and irregular maintenance Wait

Method used

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  • Wood plastic substrate of highway noise barrier
  • Wood plastic substrate of highway noise barrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The formula and extrusion molding process adopted are respectively 100 parts by weight of HDPE, 90 parts by weight of wood powder 80 mesh, 0.8 parts by weight of calcium stearate, 0.4 parts by weight of antioxidant BHT, and 0.4 parts by weight of anti-ultraviolet absorber (UV-531). Parts by weight, 3 parts by weight of iron yellow, 30 parts by weight of superfine calcium carbonate, and 0.2 parts by weight of flame retardant (magnesium hydroxide) are added, and the materials are mixed and then placed in an extruder. The extrusion process conditions: Cylinder temperature section I is 150-170°C, section II is 160-190°C, section III is 170-190°C, section IV is 180-190°C, mold temperature is 180-190°C, extruded to obtain figure 1 Sectional sound barrier profile (the cavity of the profile is a square with a side length of 35mm, the wall thickness of the partition in the cavity is 5mm, the width of the profile is 225mm, and the length is 3000mm), using NH-1 multi-channel spectr...

Embodiment 2

[0040] The formula and extrusion molding process adopted are respectively 100 parts by weight of HDPE, 70 parts by weight of wood powder 60 mesh, 0.5 parts by weight of calcium stearate, 0.2 parts by weight of antioxidant (1010), and 0.2 parts by weight of anti-ultraviolet agent (UV-531). Parts by weight, 4 parts by weight of iron yellow, 20 parts by weight of superfine calcium carbonate, and then add 0.2 parts by weight of flame retardant (magnesium hydroxide), place the materials in the extruder after mixing, and the extrusion process conditions: Cylinder temperature section I is 150-170°C, section II is 160-190°C, section III is 170-190°C, section IV is 180-190°C, mold temperature is 180-190°C, extruded to obtain figure 1 Cross-sectional profile (the profile cavity is a square with a side length of 35 mm, the wall thickness of the partition in the cavity is 5 mm, the profile width is 225 mm, and the length is 3000 mm). Using NH-1 multi-channel spectrum analyzer and BK2231 s...

Embodiment 3

[0043]The formula and extrusion molding process that take are respectively PVC100 parts by weight, wood powder 60 orders 70 parts by weight, calcium stearate 0.5 parts by weight, antioxidant (BHT) 0.2 parts by weight, plasticizer ATBC (acetyl citric acid Tri-n-butyl ester) 10 parts by weight, 3 parts by weight of iron red, 0.2 parts by weight of anti-ultraviolet agent (UV-531), 20 parts by weight of silicon dioxide, then add 0.4 parts by weight of flame retardant (monoammonium phosphate), and the The above materials are mixed and placed in the extruder. The extrusion process conditions are as follows: Barrel temperature of section I is 150-170°C, section II is 160-190°C, section III is 170-190°C, section IV is 180-190°C, and the mold temperature is Extrude at 180-190°C to obtain a flat profile (the profile has a wall thickness of 5mm and a length of 3000mm). Using NH-1 multi-channel spectrum analyzer and BK2231 sound level meter to test the plastic wood sound barrier, the fina...

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Abstract

The invention discloses a wood plastic substrate of a highway noise barrier, which is characterized by consisting of the following components in part by weight: 70 to 90 parts of wood fiber, 90 to 110 parts of plastics, 0.5 to 0.8 part of calcium stearate, 0.2 to 0.4 part of antioxidant, 0.2 to 0.4 part of ultraviolet resistant absorbent, 20 to 30 parts of inorganic particle and 0.2 to 0.4 part of flame retardant. The noise barrier manufactured by using the wood plastic substrate has the characteristics of weathering resistance, no crazing and cracks, low contractility or expansibility and freeness from the damage of molds or white ants. In addition, the wood plastic substrate of the highway noise barrier can be recycled so as to be safe and environmentally-friendly.

Description

technical field [0001] The invention belongs to the field of chemical engineering, and in particular relates to a base material for a plastic-wood highway sound barrier. The base material for the sound barrier is a new type of base material for a sound insulation device invented for the increasingly prominent problem of noise pollution on expressways. Background technique [0002] With the construction of the expressway network, the formation of industrial belts and economic belts along the line has been promoted, and the development of the local economy has been promoted. impact, and a series of environmental problems, especially noise pollution. The highway traffic noise control measures mainly include regulations and standards to control noise and reasonable use of obstacles to reduce noise. Noise barrier is a commonly used noise control method at present. It is widely used to reduce traffic noise, industrial noise and social life noise, and its effect is remarkable. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L27/06C08L23/12C08L55/02C08L97/02C08K13/02C08K5/098C08K3/26B29C47/92B29C48/92
CPCB29C48/11B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 朱方政吴正元章伟平
Owner 南京聚锋新材料有限公司
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