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A polymer sound-absorbing composite panel and its manufacturing method

A manufacturing method and polymer technology, applied in chemical instruments and methods, layered products, wood-layered products, etc., can solve the problems of disappearance, reduced sound-absorbing ability, weak induction ability, etc., and achieve high-frequency sound wave reduction ability. , Increase the weakening ability, the effect of strong induction strength

Active Publication Date: 2020-05-22
兴仁县详务新型节能建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since its sound absorption mainly uses vibration or friction to convert sound energy into internal energy, when the frequency and intensity of the sound are too low, the vibration or amplitude of the sound-absorbing material will also decrease. If the sensing ability is not strong, its noise reduction ability will be greatly reduced or even disappear when facing low-frequency and low-intensity sound waves.

Method used

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  • A polymer sound-absorbing composite panel and its manufacturing method
  • A polymer sound-absorbing composite panel and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Polymer foam layer material preparation: 100 parts of polyvinyl chloride, 15 parts of porous ceramic particles, 15 parts of foaming agent (selected formula: 3 parts of phosphoric acid, 5 parts of oxalic acid, 7 parts of p-azodicarbonamide), magnesium-aluminum layered 25 parts of double metal hydroxide, 2 parts of crosslinking agent, 25 parts of EVA particles, 40 parts of melt-blown fiber, 5 parts of industrial hydrogen peroxide, and 15 parts of magnesium chloride.

[0033] Mixed airgel layer material preparation: 80 parts of polyurea airgel powder, 40 parts of polyurethane airgel powder, 40 parts of wood micropowder, 100 parts of phenolic resin.

[0034] Its polymer foam layer manufacturing process is as follows:

[0035] (6) Magnesium chloride is heated to 70-80 degrees Celsius after being dissolved in water to form a magnesium chloride solution;

[0036] (7) foaming agent, gas generating agent, crosslinking agent and magnesium chloride solution are uniformly mixed to...

Embodiment 2

[0047] Preparation of polymer foam layer materials: 80 parts of polyvinyl chloride, 25 parts of porous ceramic particles, 8 parts of foaming agent (selected formula: 1 part of phosphoric acid, 2 parts of oxalic acid, 5 parts of p-azodicarbonamide), 20 parts of magnesium hydroxide parts, 3 parts of cross-linking agent, 15 parts of EVA particles, 60 parts of melt-blown fiber, 2 parts of aluminum powder, and 20 parts of magnesium chloride.

[0048] Mixed airgel layer material preparation: 100 parts of polyurea airgel powder, 70 parts of polyurethane airgel powder, 30 parts of wood micropowder, 70 parts of epoxy resin.

[0049] The reinforcement layer chooses laminated wood boards.

[0050] All the other procedures are the same as in Example 1.

Embodiment 3

[0052] Preparation of polymer foam layer materials: 90 parts of polyvinyl chloride, 20 parts of porous ceramic particles, 12 parts of foaming agent (the selected formula is: 2 parts of phosphoric acid, 4 parts of oxalic acid, 6 parts of p-azodicarbonamide), 22 parts of aluminum hydroxide parts, 2.5 parts of cross-linking agent, 20 parts of EVA particles, 50 parts of melt-blown fiber, 4 parts of aluminum paste, and 20 parts of magnesium chloride.

[0053] Mixed airgel layer material preparation: 60 parts of polyurea airgel powder, 55 parts of polyurethane airgel powder, 35 parts of wood micropowder, 85 parts of phenolic resin.

[0054] Aluminum plate is selected as reinforcement layer.

[0055] All the other procedures are the same as in Example 1.

[0056] It is worth mentioning that the smaller the diameter of the melt-blown fiber, the stronger the vibration effect, the stronger the sound consumption ability, and the better the sound insulation effect. Therefore, the diamete...

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Abstract

The invention discloses a macromolecular sound absorption composition board which comprises a macromolecular foaming layer, mixed aerogel layers and reinforcing layers, wherein two sides of the macromolecular foaming layer are respectively provided with the mixed aerogel layers and the reinforcing layers. The macromolecular sound absorption composition board is characterized in that the macromolecular foaming layer contains the following components in parts by weight: 80-100 parts of polyvinyl chloride, 15-25 parts of porous ceramic particles, 8-15 parts of a foaming agent, 20-25 parts of a flame retardant, 2-3 parts of acrosslinking agent, 15-25 parts of EVA particles, 40-60 parts of spay fusing fiber, 2-5 parts of a gas forming admixture, and 15-20 parts of magnesium chloride. The macromolecular sound absorption composition board has the advantages that because the porous ceramic particles, the EVA particles, the spay fusing fiber and the like are added, the sound absorption capacityis greatly improved, the diameter of the spay fusing fiber can reach micro order, and the induction strength to low-frequency low-strength sound wave is relatively strong; because the mixed aerogel layers are small in density and more in gaps, vibration is easy to generate to convert the energy of sound wave to mechanical energy or to internal energy to be dissipated. Therefore, the macromolecular sound absorption composition board not only is strong in high frequency sound wave reduction capacity, but also is stronger in low frequency sound wave reduction capacity compared with that of general absorber materials.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polymer sound-absorbing composite board and a manufacturing method thereof. Background technique [0002] There are many existing sound-absorbing materials, and their principles are basically the same. The sound-absorbing mechanism is that the sound waves go deep into the pores of the material, and the pores are mostly open holes that communicate with each other inside. Vibration, which converts sound energy into heat energy. The sound absorption coefficient of this kind of porous sound-absorbing material generally increases gradually from low frequency to high frequency, so the sound absorption effect on high frequency and intermediate frequency is better. Since its sound absorption mainly uses vibration or friction to convert the energy of sound into internal energy, when the frequency and intensity of the sound are too low, the vibration or amplitude of the sound-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/30B32B27/18B32B27/42B32B27/08B32B27/06B32B33/00B32B7/12B32B27/28B32B21/08B32B15/20B32B15/098C08L27/06C08L23/08C08L61/06C08L75/02C08L75/04C08L97/02C08L63/00C08K13/04C08K7/24C08K7/00C08K3/16C08K3/08
CPCB32B5/18B32B7/12B32B15/098B32B15/20B32B21/08B32B27/06B32B27/065B32B27/28B32B27/42B32B33/00B32B2264/0228B32B2264/067B32B2264/107B32B2266/0235B32B2307/102C08J9/0023C08J9/0061C08J9/0066C08J9/103C08J2203/04C08J2327/06C08J2423/08C08K7/00C08K7/24C08K13/04C08K2003/0812C08K2003/166C08L61/06C08L75/02C08L2205/035C08L75/04C08L97/02C08L63/00
Inventor 刘仕宽
Owner 兴仁县详务新型节能建材有限公司
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