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Special silicon-magnesium-polymer cement acoustic panel of road sound barrier and preparation method thereof

A technology of sound-absorbing panels and sound barriers, which can be used in solid waste management, sustainable waste treatment, noise absorption devices, etc., and can solve the problem of cement-based sound barrier panels returning halogen, sound absorption, poor sound insulation performance, and weathering resistance Poor performance and other problems, to achieve the effect of reducing cost, reducing weight and improving waterproof performance

Inactive Publication Date: 2010-09-01
ZIBO BEICHEN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Poor sound absorption and sound insulation performance
[0006] 2. Cement-based sound barrier panels produce brine reversion and frost
[0007] 3. Low strength, easy to deform
[0008] 4. Poor water resistance
[0009] 5. Poor weather resistance and short service life

Method used

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  • Special silicon-magnesium-polymer cement acoustic panel of road sound barrier and preparation method thereof
  • Special silicon-magnesium-polymer cement acoustic panel of road sound barrier and preparation method thereof
  • Special silicon-magnesium-polymer cement acoustic panel of road sound barrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment 1 According to the following steps, the silicon-magnesium polymer cement sound-absorbing board for road sound barriers of the present invention is prepared

[0087] ① Preparation of compound brine

[0088] Accurately metered coagulant MgCl according to the formula 2 6H 2 O 41.70 parts by weight, H 3 PO 4 0.55 parts by weight, Na 2 PO 4 0.27 parts by weight, water-reducing dispersant NNO 0.24 parts by weight, FeSO 4 .7H 2 0.94 parts by weight, 20 parts by weight of polyacrylate emulsion and appropriate amount of water are added in the compound brine preparation tank, after stirring it is completely dissolved, filter and set aside;

[0089] ②. Preparation of slurry

[0090] 36.76 parts by weight of MgO accurately measured according to the formula, active SiO 2 12.38 parts by weight of fly ash as a modifier, 9.97 parts by weight of wood chips as a reinforcing fiber, and 0.5 parts by weight of bentonite as a water-resistant structure modifier of silic...

Embodiment 2～ Embodiment 6

[0100] According to the preparation method of Example 1, according to the formula in Table 1, prepare the special silica-magnesium polymer cement sound-absorbing board for road sound barriers of the present invention

[0101] Table 1

[0102] raw material

Example 2

Example 3

Example 4

Example 5

Example 6

MgO

35

40

36

38

39

MgCl 2 .6H 2 o

38

44

39

40

42

h 3 PO 4

.05

.06

0.5

0.6

0.5

Na 2 PO 4

0.2

0.3

0.2

0.3

0.3

Water reducing dispersant NNO

0.2

0.3

0.2

0.2

0.3

FeSO 4 .7H 2 o

0.8

1.0

0.9

0.8

1.0

[0103] raw material

Example 2

Example 3

Example 4

Example 5

Example 6

epoxy resin emulsion

Content 40%

10

polyacrylate emulsion

Solid content 40%

30

20

polyvinyl acetate e...

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PUM

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Abstract

The invention relates to a special silicon-magnesium-polymer cement acoustic panel of a road sound barrier and a preparation method thereof, belonging to a material for absorbing airborne noise. The acoustic panel is a flat rectangular solid in shape, and the frame of the acoustic panel is formed by one-step cast molding, wherein the bottom layer is closed, the surface layer is porous, and the intermediate layer is divided into double cavities and is filled with inorganic acoustic materials. The frame of the acoustic panel comprises the following component materials in parts by weight: 35-40 parts of MgO, 38-44 parts of MgCl2.6H2O, 0.5-0.6 part of H3PO4, 0.2-0.3 part of Na2PO4, 0.2-0.3 part of water-reducing dispersant NNO, 0.8-1.0 part of FeSO4.7H2O, 10-30 parts of organic polymer emulsion with the solid content of 40%, 11-13 parts of active SiO2 modifying agent, 9-11 parts of reinforcing fiber, 0.4-0.6 part of silicon aluminum waterproof structure modifying agent and an amount of water. The special silicon-magnesium-polymer cement acoustic panel has the advantages of no helogenation, no efflorescence, high strength, no deformation, good water resistance, weathering resistance, long service life and good acoustic absorption and sound insulation property. The service life of the cement acoustic panel can be more than 25 years.

Description

technical field [0001] The invention relates to a silicon-magnesium polymer cement sound-absorbing board for road sound barriers and a preparation method thereof. The invention belongs to an air-borne noise absorbing material, in particular to a Portland cement polymer sound-absorbing and sound-insulating board specially used for road sound barriers. Background technique [0002] Modern industrial civilization has brought unprecedented noise disturbance, and noise, water pollution, air pollution and garbage are listed as the four major public hazards of the modern world environment. Especially the noise from the operation of vehicles such as expressways, high-speed railways, viaducts, subways, and light rails not only annoys people, interferes with sleep, hinders study, work and rest, affects human health, and is difficult to completely eliminate. Setting up sound barriers is one of the effective measures. [0003] When a sound wave encounters a barrier during propagation,...

Claims

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Application Information

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IPC IPC(8): E01F8/00C04B28/00C04B111/52
CPCC04B2111/29C04B2111/27C04B2111/0075C04B28/32C04B2111/52C04B2111/2038Y02W30/91C04B18/146C04B20/0048C04B22/149C04B22/16C04B22/165C04B24/24C04B2103/302C04B2103/408C04B24/226
Inventor 秦沂农董哲周士海
Owner ZIBO BEICHEN ENVIRONMENTAL PROTECTION TECH
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