CN103408859A - Composite sound absorption plastic preparation method - Google Patents
Composite sound absorption plastic preparation method Download PDFInfo
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- CN103408859A CN103408859A CN2013103009075A CN201310300907A CN103408859A CN 103408859 A CN103408859 A CN 103408859A CN 2013103009075 A CN2013103009075 A CN 2013103009075A CN 201310300907 A CN201310300907 A CN 201310300907A CN 103408859 A CN103408859 A CN 103408859A
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Abstract
The present invention provides a composite sound absorption plastic preparation method, which comprises: uniformly stirring and mixing 30-70% by mass of a polyvinyl chloride resin, 10-20% by mass of rock wool, 20-60% by mass of a nitrile butadiene rubber, 10-20% by mass of hollow glass micro-beads, 0.1-5% by mass of a silane coupling agent, 0.5-3% by mass of magnesium hydroxide, and 1-5% by mass of a magnesium stearate stabilizer, carrying out mixing on the obtained mixture for 10-30 min on a mixer at a temperature of 130-150 DEG C to prepare a green body, and forming the green body in an oven at a temperature of 200-220 DEG C to prepare the sound absorption material with excellent comprehensive performances. According to the present invention, the hollow glass micro-bead component is added based on the polyvinyl chloride, the rock wool and the nitrile butadiene rubber, such that a sound and noise absorption range is wide, and a sound absorption coefficient is high; with high porosity of the material and three-dimensional uniform distribution of pores, excellent acoustic performances are provided, wherein a sound absorption coefficient is high, and an application frequency band range is wide; and characteristics of easy processing, no pollution, dust-resistance, moisture resistance, good decoration effect and the like are provided.
Description
Technical field
The present invention relates to a kind of preparation method of sound-absorbing material, particularly a kind of preparation method that can obviously improve the composite sound absorbing plastics of medium and low frequency sound absorbing capabilities.
Background technology
Along with industrial expansion, noise has become one of world today's three major source of pollution.Noise not only endangers people's auditory system, makes
The people is tired, deaf, but also can accelerate the aging of buildings, physical construction, affects precision and the work-ing life of equipment and instrument.Noise control problem causes national governments and scientific worker's attention gradually, and current main terms of settlement is to adopt sound-absorbing material to carry out the sqouynd absorption lowering noise processing.Sound-absorbing material is divided into sound-absorbing porous material and the large class of resonance sound-absorbing structure material two by sound absorbing mechanism.Sound-absorbing porous material has the advantages such as the high frequency sound absorption coefficient is large, proportion is little, but the low frequency absorption coefficient is low; The low frequency absorption coefficient of resonance sound-absorbing structure material is high, but poor processability.The sound-absorbing material that current China adopts be take super glass wool as main, and its sound absorption coefficient is large, proportion is little, but intensity is low, the crisp easy fracture of property, easily fly upward, dust suction, make its application be subject to serious restriction.Therefore, must develop the novel sound-absorbing material of excellent property.The sound-absorbing materials such as foamed metal, porous plastics, multicellular glass, polyvinyl chloride P inorganics composite foam have appearred at present in succession.
A lot of about the relevant research of polyvinyl chloride P inorganics composite foam.
The investigator mixes the raw materials such as polyvinyl chloride (PVC), softening agent, anti-aging agent, whipping agent by proportioning after, add a certain amount of rock wool, then on open type plastic purificating set, carry out mixing, the material that will mix is again put into mould, and this is a kind of composite foam material that had not only contained organism but also contained inorganics after the foaming that heats up in baking oven, to obtain polyvinyl chloride foam material.This composite foam is quite little at low frequency place sound absorption coefficient.
Some investigator studies and finds that polyvinyl chloride adds the rock wool foam materials can improve the acoustic absorption at low frequency place, and it has an absorption peak at the low frequency place.This is because rock wool fibers resonance produces friction, and acoustic energy is converted into to heat energy.So PVC Π rock wool composite foam material has greatly improved the medium and low frequency sound absorbing capabilities.
After further research is found to add paracril (NBR) in polyvinyl chloride and rock wool composite foamed sound-absorbing material, sound absorbing capabilities will change.Along with the increase of NBR consumption, the high frequency sound absorption coefficient significantly descends, and the low frequency absorption coefficient rises to some extent.This is that the low frequency absorption coefficient is low because PVC foam material high frequency sound absorption coefficient is high, and NBR material high frequency sound absorption coefficient is low, and the low frequency absorption coefficient is high, and when the bi-material blend, sound absorbing capabilities is between between the two.PVC and NBR and rock wool composite sound-absorbing material combine the advantage of sound-absorbing porous material and resonance sound-absorbing material, have high, the applicable wide frequency range of low frequency absorption coefficient, processability is good, technique is simple, low cost and other advantages, is widely used in the fields such as industrial and covil construction.Its shortcoming is in preparation process, to use rock wool, can produce fibre dust and pollute.
Summary of the invention
The present invention, for addressing the above problem, provides a kind of sound absorption coefficient high, and the applicable band wide ranges also has easy processing, pollution-free, dust-fast composite sound absorbing plastics.
A kind of preparation method of composite sound absorbing plastics, by mass percentage by polyvinyl chloride (PVC) RESINS 30-70%, rock wool 10-20%, paracril 20-60%, hollow glass microbead 10-20%, silane coupling agent 0.1-5%, the mixing that stirs of 0.5-3% magnesium hydroxide, the Magnesium Stearate stablizer of 1-5%; Above-mentioned mixture is uploaded to mixing 10-30min at 130-150 ℃ of temperature at mixing roll and make base substrate, base substrate is foamed and can prepare the sound-absorbing material of high comprehensive performance at baking oven 200-220 ℃ temperature.
Hollow glass microbead (HGB) is a kind of just spherical, hollow, multifunction fine vitreum of including gas, is mainly derived from sorting extraction and the artificial synthesis of flyash.HGB is usingd the characteristics such as its lightweight, compressive strength are high, good dispersity, processing characteristics excellence and is used by the extensive filler as matrix material; Simultaneously, unique character such as it has, and heat insulating, sound insulation, electric simulation strength are high, wear-resisting, radioprotective, water-intake rate are low, given polymkeric substance some new functions.Just because of this, take hollow glass micropearl as the applied research of the matrix material of wild phase more and more is subject to the attention of material circle, be widely used at present building materials, plastics, rubber, coating and aerospace, deep-sea buoyancy material, field of wind power generation.Described hollow glass microbead particle diameter is micron level.
, there is empty glass microballon (HGB) in the research discovery in polymeric matrix, the effect meeting of this sound absorption further strengthens.Due to HGB, sound wave is had the effects such as reflection, diffraction, the structure of its hollow has iris action for sound wave, so the HGB syntactic foam has very large application potential in the sound-absorbing material field, and can reduce dust pollution.
The present invention has added the hollow glass microbead composition on the basis of polyvinyl chloride, rock wool and paracril, make the sound absorption noise range broader and sound absorption coefficient is high.The uniform property of the high porosity of its material and the solid of pore has been given its good acoustical behavior, and not only sound absorption coefficient is high, and the applicable band wide ranges also has easy processing, pollution-free, dust-fast, humidity and the good characteristics such as decorative effect simultaneously.
Embodiment 1
By mass percentage by polyvinyl chloride (PVC) RESINS 50%, rock wool 10%, the mixing that stirs of the hollow glass microbead 15% of paracril 20%, 50 micron grain size, silane coupling agent 1.5%, 1% magnesium hydroxide, 2.5% Magnesium Stearate stablizer; Above-mentioned mixture is uploaded to mixing 10-30min at 130-150 ℃ of temperature at mixing roll and make base substrate, base substrate is foamed at baking oven 200-220 ℃ temperature, prepare the 20mm sound-absorbing material.
Embodiment 2 is by mass percentage by polyvinyl chloride (PVC) RESINS 60%, rock wool 15%, the mixing that stirs of paracril 20%, silane coupling agent 1.5%, 1% magnesium hydroxide, 2.5% Magnesium Stearate stablizer; Above-mentioned mixture is uploaded to mixing 10-30min at 130-150 ℃ of temperature at mixing roll and make base substrate, base substrate is foamed at baking oven 200-220 ℃ temperature, prepare the 20mm sound-absorbing material.
The comparative result of table 1 sound-absorbing material sound absorption coefficient table
| Frequency/Hz | 125 | 250 | 500 | 1000 | 2000 | 4000 |
| Embodiment 1 | 0.88 | 0.94 | 1.01 | 0.84 | 1.11 | 0.98 |
| Embodiment 2 | 0.21 | 0.56 | 0.79 | 0.57 | 0.73 | 0.04 |
From table 1 result, showing, the sound absorption coefficient of embodiment 1 is obviously large than embodiment 1, and when high frequency and low frequency, embodiment 2 sound absorption coefficienies are without obvious absorption, but embodiment 1 alters a great deal, the sound absorption noise range is broader and sound absorption coefficient is high therefore the interpolation hollow glass microbead makes.
Claims (2)
1. the preparation method of composite sound absorbing plastics, is characterized in that step is as follows,
1) by mass percentage by polyvinyl chloride (PVC) RESINS 30-70%, rock wool 10-20%, paracril 20-60%, hollow glass microbead 10-20%, silane coupling agent 0.1-5%, 0.5-3% magnesium hydroxide, the Magnesium Stearate stablizer of the 1-5% mixing that stirs;
2) above-mentioned mixture is uploaded to mixing 10-30min at 130-150 ℃ of temperature at mixing roll and make base substrate, base substrate is issued to brewed standby sound-absorbing material in a baking oven 200-220 ℃ temperature.
2. the preparation method of composite sound absorbing plastics according to claim 1, is characterized in that described hollow glass microbead particle diameter is micron level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013103009075A CN103408859A (en) | 2013-07-18 | 2013-07-18 | Composite sound absorption plastic preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103009075A CN103408859A (en) | 2013-07-18 | 2013-07-18 | Composite sound absorption plastic preparation method |
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| CN103408859A true CN103408859A (en) | 2013-11-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694431A (en) * | 2016-03-17 | 2016-06-22 | 合肥晨煦信息科技有限公司 | Polyurethane foam sound absorption composite |
| CN106566127A (en) * | 2016-10-28 | 2017-04-19 | 祖兴保 | Decorative PVC material with good light-proofness and preparation method of decorative PVC material |
| CN107207369A (en) * | 2015-01-28 | 2017-09-26 | 霓佳斯株式会社 | Foaming body |
| CN114196082A (en) * | 2021-12-20 | 2022-03-18 | 珠海格力新材料有限公司 | Sound insulation composition and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1709962A (en) * | 2005-07-07 | 2005-12-21 | 西安交通大学 | Method for preparing organic polymer/inorganic mineral composite foamed sound-absorbing material |
-
2013
- 2013-07-18 CN CN2013103009075A patent/CN103408859A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1709962A (en) * | 2005-07-07 | 2005-12-21 | 西安交通大学 | Method for preparing organic polymer/inorganic mineral composite foamed sound-absorbing material |
Non-Patent Citations (1)
| Title |
|---|
| 杨鸣波，唐志玉: "《中国材料工程大典第7卷高分子材料工程（下）》", 31 March 2006, article "隔声高分子" * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107207369A (en) * | 2015-01-28 | 2017-09-26 | 霓佳斯株式会社 | Foaming body |
| US10947163B2 (en) | 2015-01-28 | 2021-03-16 | Nichias Corporation | Foam |
| CN105694431A (en) * | 2016-03-17 | 2016-06-22 | 合肥晨煦信息科技有限公司 | Polyurethane foam sound absorption composite |
| CN106566127A (en) * | 2016-10-28 | 2017-04-19 | 祖兴保 | Decorative PVC material with good light-proofness and preparation method of decorative PVC material |
| CN114196082A (en) * | 2021-12-20 | 2022-03-18 | 珠海格力新材料有限公司 | Sound insulation composition and preparation method and application thereof |
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Application publication date: 20131127 |