CN1122962C - Netted composite sound-absorbing material - Google Patents
Netted composite sound-absorbing material Download PDFInfo
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- CN1122962C CN1122962C CN 01107650 CN01107650A CN1122962C CN 1122962 C CN1122962 C CN 1122962C CN 01107650 CN01107650 CN 01107650 CN 01107650 A CN01107650 A CN 01107650A CN 1122962 C CN1122962 C CN 1122962C
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- absorbing material
- composite sound
- polyvalent alcohol
- reticular
- netted composite
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Abstract
The present invention relates to reticular composite sound-absorbing material. The material uses polyurethane reticular foam plastics as base material; the polyurethane reticular foam plastics is compounded into a whole after the polyurethane reticular foam plastics is infiltrated, coated and solidified by inorganic gelled material; the present invention has the components with the weight contents of 45 to 85 of cement, 10 to 61 of water, 0.5 to 2.5 of polyurethane reticular foam plastics, 0.06 to 0.18 of titanate, 8 to 35 of clay and 0.05 to 0.15 of organic silicon. The present invention has double advantages of organic foam sound-absorbing material and inorganic foam sound-absorbing material; the present invention has good combination property and obvious composite improvement effect.
Description
Technical field
The present invention relates to a kind of acoustic absorbant, particularly relate to a kind of by having the netted composite sound-absorbing material that cancellated macromolecular material and inorganic material are composited.
Background technology
The acoustic absorbant of producing at present and using has following several: 1, the organic foam plastic class is as polyurethane foam plastics, urea-formaldehyde foamed plastics and aminomethyl polyfoam etc.But its advantage is a density little, soft, moisture resistance excision forming, construction install convenience.Shortcoming is that sound absorbing capabilities instability, easily aging, easily suction, outdoor application are limited.2, the organic fibrous material class is as cotton, fiber crops, wood chip, vegetable fibre, sea grass, monofilament and goods thereof etc.Its advantage is that density is little, acoustical absorption coefficient is high, abundant, the low price in starting material source.Shortcoming is fire prevention, humidity resistance is poor, easily damage by worms, go mouldy, outdoor application is limited.3, inorganic foamed building materials class is as foamglass, gas concrete, expanded perlite product etc.Its advantage is intensity height, good processability, waterproof, do not fire, corrosion-resistant, aging.Shortcoming is that acoustically effective is general, micropore perforation rate is few.4, the inorganic fibers class is as centrifugally glass-wool, rock wool, mineral wool and goods thereof.Its advantage is the acoustical absorption coefficient height, density is little, coefficient of heat conductivity is little, chemical stability is high, do not fire, mould moth etc. not.Shortcoming be moisture absorption, water absorptivity big, make moist that the back sound absorbing capabilities descends, intensity is low, crisp easily broken, the easy Workflow behind stained, the dust formation of property, cause secondary pollution, outdoor application limited.
As mentioned above, though existing acoustic absorbant is of a great variety, kind is different, and its relative merits are arranged respectively, but because the restriction of material self performance, make above-mentioned various types of materials on range of application, all be subjected to certain limitation, and development in science and technology and social progress are had higher requirement to the combination property of acoustic absorbant.
Summary of the invention
The object of the present invention is to provide a kind of two-fold advantage that has organic foam and inorganic acoustic absorbant concurrently, high comprehensive performance, and netted composite sound-absorbing material with tangible compound improvement effect.
For achieving the above object, the invention provides a kind of netted composite sound-absorbing material, this material is to be base material with the reticular foam polyurethane plastics, soaks into, coats, solidifies through inorganic coagulation material, makes it to be combined into one, and its component and content (weight portion) are:
Cement 45-85
Water 10-61
Reticular foam polyurethane plastics 0.5-2.5
Titanate esters 0.06-0.18
Clay 8-35
Organosilicon 0.05-0.15
Described reticular foam polyurethane plastics is 700～3000 by one or more mean molecular weight, hydroxyl value is 32～310 polyvalent alcohol, structure is that 65/35 or 80/20 diisocyanate and gas-development agent, surfactant, catalyzer are formed, and its percentage of open area is more than 95%.
Described polyvalent alcohol is for being the PPOX polyvalent alcohol of initiator with glycerine, being PPOX polyvalent alcohol, castor oil, Valelinum Liquidum, polyester polyol, low hydroxyl value polyester polyol and the trihydroxy alcohol of initiator with the trimethylolpropane.
Described gas-development agent is a water; Catalyzer is triethylene diamine, stannous octoate, triethylene diamine, N-hexyl morphine, two cinnamic acid dibutyl tins; Surfactant is an organosilicon.
Contribution of the present invention is, this acoustic absorbant is to be base material by reticular foam polyurethane plastics, soak into, coat, solidify through inorganic coagulation material, make it to be combined into one, and reticular foam polyurethane plastics is the inventor develop have a cancellated perforating polyfoam, combination properties such as its pulling strengrth, breaking elongation and tear strength all are much higher than the regular-type foam plastics.Acoustic absorbant after compound has two-fold advantage such as organic and inorganic foamed acoustic absorbant hard, light-duty, intensity height concurrently, that it has possessed not only that acoustic absorbant must have is a large amount of, that interpenetrate, the essential characteristic of microcellular structure from outward appearance to inner essence, and has produced a series of compound improvement effects:
One of effect: against weather, permanance and ageing resistance improve greatly.The coating of inorganic coagulation material, make macromolecular material avoid exposing for a long time and the shortcoming easily aging, that against weather is poor, serviceable life is short.
Two of effect: fire retardant performance strengthens.Acoustic board modification synthetic high polymer base material itself possesses characteristics fire-retardant, that put out certainly, and after the surface was coated by inorganic gel material, its fire retardant performance further strengthened.
Three of effect: greatly improved bulk strength and rigidity.Macromolecule polyurethane reticulated foam base material is a kind of softness and resilient foams, and no strength and stiffness can be sayed, and inorganic coagulation material is a fragility after solidifying.Lack flexibility and tensile strength low, after compound, base material becomes the support system that has three-dimensional structure, is evenly distributed in acoustic board inside, and the curing of inorganic coagulation material dipping makes support system hard, thereby produce the effect that a kind of effective secondary is strengthened, the hardness and the rigidity of sheet material obviously improve.
Four of effect: toughness strengthens, and impact resistance improves, and avoids cracking.The supporter of the three-dimensional netted mechanism of base material makes acoustic board can absorb big energy when being subjected to impacting, thereby reduce the effect that stress is concentrated effectively, can weaken simultaneously the plastic shrinkage of inorganic coagulation material, the energy of contraction is dispersed on the reticulate texture, strengthen the toughness of acoustic board effectively, also avoided the crackle and the crack that cause because of contraction.
Five of effect: the temperature difference compensation effect is obvious, acoustic board is by the tridimensional network form, the effect of the inorganic coagulation material internal stress that can alleviate temperature variation and cause stops the expansion of thermal cracking, plays a kind of effect of effective material temperature difference compensation cracking resistance.
Six of effect: water resistance improves.The water-intake rate height of inorganic coagulation material, and easily " dewfall ", and the water-intake rate of modification synthesized polymer material＜0.2%, after the two is compound, because integral material is the modification synthesized polymer material, and the network perforate, and inorganic glue only coats one deck in the surface, therefore the absorptivity of acoustic board reduces greatly than the inorganic coagulation material foamed material, and water resistance is improved, and freezing and thawing performance is good especially.
Seven of effect: the Yi Moxing of goods (mouldability) is good, compound after, can make the acoustic board moulding easily, and can make special-shaped specifications such as camber, waveform according to design requirement.
Eight of effect: acoustical behavior is stable, and is free from environmental pollution.After compound flow resistance, porosity and the structure factor of acoustic board are fixed up, make acoustical behavior stable.Acoustic board does not have fiber to be subjected to load to lose phenomenon to occur, and therefore can not cause secondary pollution.
Embodiment
The invention will be further described below by a preferred embodiment.
Netted composite sound-absorbing material of the present invention is to be base material with the reticular foam polyurethane plastics, soaks into, coats, solidifies through inorganic coagulation material, makes it to be combined into one.Wherein reticular foam polyurethane plastics is basis of the present invention, and its preparation example is as follows:
To be 85 parts of (weight portion) (glycol component are less than 1% for hydroxyl value 65.9, mean molecular weight 2000) of PPOX polyvalent alcohol of initiator with glycerine; With trihydroxy methyl third is 15 parts of the PPOX polyvalent alcohols (hydroxyl value 310, mean molecular weight 700) of alkane initiator; (65/35) 48.7 part of diisocyanate and water 3.5-5.8 part, optimum is 4.5 parts; Three hexamethylenediamire 0.1-0.21 parts, optimum is 0.15 part; Stannous octoate 0.1-0.12 part, optimum are 0.11 part; Organosilicon 1.5-1.8 part, optimum are 1.7 parts and add simultaneously in the reactor, makes the reticular foam polyurethane plastics multipolymer by stirring.Above-mentioned polyvalent alcohol, diisocyanate and auxiliary agent are known product.Wherein water is gas-development agent; Triethylene diamine, stannous octoate are catalyzer, and organosilicon is a surfactant.
The key of reticular foam polyurethane plastics preparation is stirring rate and the mixing time in the control mixed process, excessive velocities and cross slow and overlong time or too shortly all will be difficult to form reticulate texture, experiment shows, its stirring rate should be controlled at 2600～4000 (rpm), the best is 3100 (rpm), mixing time should be controlled at 8～20 seconds, and the best is 10 seconds.
Netted composite sound-absorbing material then is to be that base material prepares as follows with the reticular foam polyurethane plastics:
Get reticular foam polyurethane plastics 0.5-2.5 part (weight portion), optimum is 1 part; Cement 45-85 part, optimum are 65 parts; Water 10-61 part, optimum are 30 parts; Titanate esters 0.06-0.18 part, optimum are 0.12 part; Clay 8-35 part, optimum are 20 parts; Organosilicon 0.05-0.15 part, optimum are 0.10 part, and wherein cement, titanate esters and clay are inorganic coagulation material, and organosilicon is a surfactant.Cement, titanate esters, clay and organosilicon with after water mixes, are put into inorganic mixture with reticular foam polyurethane plastics again, flood, coat and solidify, can make the netted composite sound-absorbing material of polyurethane.But the acoustic absorbant roll-forming after the curing is various sound absorbing plates.
The mechanism of action of the present invention is, through the coating of inorganic coagulation material, makes the macromolecule polyurethane reticulated foam avoid exposing for a long time and easily aging, problem such as against weather is poor, serviceable life is short, and improved its fire retardant performance.After compound, base material becomes the support system that has three-dimensional structure, is evenly distributed in acoustic board inside, and the curing of inorganic coagulation material dipping makes support system hard, thereby produces the effect that a kind of effective secondary is strengthened, and the hardness and the rigidity of sheet material obviously improve.Basic mechanical design feature of the present invention is as shown in table 1:
Table 1
| Sequence number | Project | Unit | Technical indicator | Remarks |
| 1 | Density | Kg/m 3 | 330---380 | GB6343---86 |
| 2 | Compressive strength | Kpa | 956 | GB/T11971---1997 |
| 3 | Rupture strength | Kpa | 908 | GB177-85 |
| 4 | Drying and watering cycle (compressive strength) retention rate | ％ | 92 | GB/T11975--1997 |
| 5 | Flammability | ---- | The A level | GB8654----98 |
| 6 | Average sound absorption coefficient | A 0 | 0.53 | GBJ47-1983 (the thick back of 250---4000Hz Reverberation room method 30MM is sturdy) |
| 7 | Porosity | ％ | ＞75 |
Improve greatly by its acoustical behavior of acoustic board that netted composite sound-absorbing material of the present invention is made, and free from environmental pollution.After compound flow resistance, porosity and the structure factor of acoustic board are fixed up, make acoustical behavior stable.Acoustic board does not have fiber to be subjected to load to lose phenomenon to occur, and therefore can not cause secondary pollution.
Claims (4)
1, a kind of netted composite sound-absorbing material is characterized in that, it is to be base material with the reticular foam polyurethane plastics, soaks into, coats, solidifies through inorganic coagulation material, makes it to be combined into one, and its component and content (weight portion) are:
Cement 45-85
Water 10-61
Reticular foam polyurethane plastics 0.5-2.5
Titanate esters 0.06-0.18
Clay 8-35
Organosilicon 0.05-0.15
2, netted composite sound-absorbing material according to claim 1, it is characterized in that, described reticular foam polyurethane plastics is 700～3000 by one or more mean molecular weight, hydroxyl value is 32～310 polyvalent alcohol, structure is that 65/35 or 80/20 diisocyanate and gas-development agent, surfactant, catalyzer are formed, and its percentage of open area is more than 95%.
3, netted composite sound-absorbing material according to claim 2, it is characterized in that described polyvalent alcohol is for being the PPOX polyvalent alcohol of initiator with glycerine, being PPOX polyvalent alcohol, castor oil, Valelinum Liquidum, polyester polyol, low hydroxyl value polyester polyol and the trihydroxy alcohol of initiator with the trimethylolpropane.
4, netted composite sound-absorbing material according to claim 2 is characterized in that, described gas-development agent is a water; Catalyzer is triethylene diamine, stannous octoate, triethylene diamine, N-hexyl morphine, two cinnamic acid dibutyl tins; Surfactant is an organosilicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107650 CN1122962C (en) | 2001-03-21 | 2001-03-21 | Netted composite sound-absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107650 CN1122962C (en) | 2001-03-21 | 2001-03-21 | Netted composite sound-absorbing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1312541A CN1312541A (en) | 2001-09-12 |
| CN1122962C true CN1122962C (en) | 2003-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01107650 Expired - Lifetime CN1122962C (en) | 2001-03-21 | 2001-03-21 | Netted composite sound-absorbing material |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105144284B (en) * | 2013-04-26 | 2019-06-04 | 株式会社自动网络技术研究所 | Sound-absorbing material and harness with sound-absorbing material |
| CN103350530A (en) * | 2013-08-02 | 2013-10-16 | 常熟市沪虞港口机械有限公司 | Novel corrugated roller for carton machinery |
| CN106243322A (en) * | 2016-08-23 | 2016-12-21 | 江苏绿源新材料有限公司 | Polyester-type reticulated polyurethane flex foam and preparation method thereof |
| CN108360700A (en) * | 2018-05-16 | 2018-08-03 | 四川文希科技有限公司 | A kind of building sound-proofing insulation board |
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2001
- 2001-03-21 CN CN 01107650 patent/CN1122962C/en not_active Expired - Lifetime
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| CN1312541A (en) | 2001-09-12 |
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Free format text: CORRECT: APPLICANT; FROM: YANG WEI TO: SHENZHENG CITY GUOZHI HUIFU POLYMER MATERIALSCO., LTD. |
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Address after: 518018 first industrial zone, Shiyan Town, Shenzhen, Guangdong, 35-38, Baoan District Applicant after: Shenzhen Guozhihuifu Polymer Material Co., Ltd. Applicant before: Yang Wei |
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Granted publication date: 20031001 |