CN101685630A - Anti-noise fiber material cushion and preparation method thereof - Google Patents
Anti-noise fiber material cushion and preparation method thereof Download PDFInfo
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- CN101685630A CN101685630A CN200910040685A CN200910040685A CN101685630A CN 101685630 A CN101685630 A CN 101685630A CN 200910040685 A CN200910040685 A CN 200910040685A CN 200910040685 A CN200910040685 A CN 200910040685A CN 101685630 A CN101685630 A CN 101685630A
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Abstract
The invention discloses an anti-noise fiber material cushion and a preparation method thereof. The material cushion is formed by overlapping at least two layers comprising an ultrathin fiber sound absorption material layer and an ultra-micro perforation sound absorption plate material layer, and the thickness of the material cushion is between 2 and 8 mm; the ultra-micro perforation sound absorption plate material layer is an ultrathin PVC paper board with the porosity of 0.2 to 3 percent; the ultrathin fiber sound absorption material layer is formed by overlapping 1 to 10 layers of fiber sound absorption materials with thickness of 0.2 to 2 millimeters; and the ultrathin fiber sound absorption material consists of a main fiber material and an auxiliary material. The anti-noise fiber material cushion has good noise reduction effect within a full audio frequency range, and particularly has quite obvious sound absorption performance of the noise under a high frequency; the noise is reduced by 2 to 8dB; and the anti-noise fiber material cushion is widely applied to the industrial fields of air conditioners, refrigerators, washing machines, automobiles, spaceflights and the like, and has quite important potential application value on noise reduction, energy conservation, consumption reduction and improvement of market competitiveness of products with higher noise requirements.
Description
Technical field
The anti-noise fiber material that the present invention relates to has fiber material cushion of full range decrease of noise functions and preparation method thereof when particularly relating to environmental protection, this material cushion can be done acoustic damping materials in modern electrical appliance industry field and use.
Background technology
With development of world economy rapidly and the enhancing of people's environmental consciousness, people also improve constantly the requirement of living standard, also progressively enter into consumers in general's sphere of life such as household electrical appliances such as air-conditioning, refrigerator, washing machines, very large convenience and work efficiency are provided for people's life.The modern society people propose more and more higher requirement to living environment, not only require living environment cool in summer and warm in winter, and require the invasion of the least possible noise pollution.Yet; these products in use can cause certain environmental noise; usually can send bigger noise when the work as the air-conditioning of household appliances, refrigerator, washing machine etc.; bring noise to invade and harass for people's normal life; these noise problems have become the significant problem that the household appliances manufacturer is badly in need of solving, and how much noise figure also is one of important evidence of household electrical appliances manufacturer occuping market simultaneously.
Current domestic and international household electrical appliances manufacturer is in order to reduce the noise figure of household appliances, adopted the whole bag of tricks to achieve the goal, reduce the noise of household appliances as acoustic damping materials such as sound suppressor, chip tiny hole noise silencer, acoustical cotton, polyfoam, little string orifice plate sound suppressor and efficient multicell reactive mufflers, but the effect of noise reduction and production cost thereof are difficult to all the time make the user satisfied.Can find out with the Analysis on development of acoustic damping materials from domestic and international household electrical appliances, the acoustic damping materials of using in household electrical appliances production at present mainly trend towards to combined type or the development of knockdown composite structure, mainly the material with performance inequality and structure makes up, realize having complementary advantages, strengthen the sound absorption combination property.As the disclosed non-fibrous type high-efficiency broadband metal sound absorber of patent CN2857155Y, adopt microperforated panel and alloy foam metal material or aluminum fiber material to be the combination acoustic absorbant, the Chinese invention patent of the patent No. 00103311.5 adopts microperforated panel and microperforated panel to constitute the mould assembly noise reduction member with back cavity degree of depth of one; Though these materials have the effect at the superwide frequency band noise reduction, needing big cavity structure and whole material to be rigidity characteristic and to be difficult to curls, make, cost more high defective narrow, bulky at practical application face, in air-conditioning, install complicated and be difficult to more widely-used at whole material.The blower fan sound suppressor of forming by Shell Plate, porous plate, sound absorption cotton, glass fibre cloth material as the disclosed blower fan sound suppressor of patent CN2361891Y, be material perhaps with mineral wools such as rubber skin and asbestos, and this class material generally contains Toxic matter and sound absorbing capabilities is desirable not enough, while is owing to sound absorption cotton and the glass wool that whole material is rigidity and employing is noxious material, human body environment and air pollution are produced severe contamination, only use at the blower fan noise reduction.
Summary of the invention
The fundamental purpose of patent of the present invention is to overcome the shortcoming of existing acoustic damping materials, and a kind of lightweight, flexibility, low cost, environmental protection anti-noise fiber material cushion that the full range noise reduction is good are provided.
Another object of the present invention is to provide the preparation method of above-mentioned anti-noise fiber material cushion.
The present invention was with acoustic damping materials were different in the past, the combination of the acoustic board of the super smallness pore structure that employing is flexible and the super thin fiber acoustic absorbant of high acoustic absorption performance, make material both have the high anti-acoustic capability under the full audio frequency, but and because the material flexible bending, the integral material light weight, volume is little and be easy to the assembling, have good effect.
Purpose of the present invention is achieved through the following technical solutions:
A kind of anti-noise fiber material cushion is formed by super thin fiber sound-absorbing material layer and the two-layer at least overlapping of ultra micro perforated acoustic board material layer, and thickness is 2-8mm; Described ultra micro perforated acoustic board material layer is that porosity is ultra-thin PVC, the cardboard of 0.2-3%; Described super thin fiber sound-absorbing material layer is that the fiber acoustic absorbant of 0.2-2mm is formed by stacking by the 1-10 layer thickness; Described super thin fiber acoustic absorbant is made up of principal fiber material and auxiliary material, by weight percentage, the prescription of described principal fiber material is made up of the vegetable fibre of 50-70%, the glass fibre of 20-30% and the mineral fibres of 10-20%, and the prescription of described auxiliary material is made up of the nano-cellulose fiber that accounts for over dry principal fiber material weight 0.5-4%, 0.2-1% nano-calcium carbonate, 0.1-3% magnesium hydroxide and the tackifier of 3-8%.
Described noise reduction sound fibrous material outside surface also comprises the buffering woven cloth.
The ground floor ultra micro perforated acoustic board material layer porosity of described anti-noise fiber material cushion is 0.8-3%, and ground floor ultra micro perforated acoustic board material layer porosity is 0.2-2%.
Described noise reduction sound fibrous material average density is 10-100kg/m
3
The preparation method of described noise reduction sound fiber material cushion comprises the steps:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by the vegetable fibre of 50-70%, the glass fibre of 20-30% and 10-20% mineral fibres mix to be formed, in the principal fiber material, add the snapback fibre cellulose fiber that accounts for over dry principal fiber material weight 0.5-4%, 0.2-1% nano-calcium carbonate and 0.1-3% magnesium hydroxide, blending and modifying, again by nonwoven fabrics forming technique and the tackifier mixing die forming that accounts for over dry principal fiber material weight 3-8%, in hothouse, be 8-10% after the moulding, form the fiber acoustic absorbant with 80-100 ℃ of temperature pneumatic conveying drying to water percentage;
The super thin fiber sound-absorbing material layer is that the fiber acoustic absorbant of 0.2-2mm is bored a hole around the material back and forth by suture and fixing by the 1-10 layer thickness, makes each layer super thin fiber acoustic absorbant be superimposed, and forms the super thin fiber sound-absorbing material layer;
(2) preparation of the little perforated acoustic board material of ultra micro: utilize the hot pin puncturing technique of automatic braiding to punch on acoustic board, the aperture is 0.1-2mm, thickness of slab 0.2-2mm, and the punching back flattens straightening, also stores; The described starting material that are used to prepare the little perforated acoustic board material of ultra micro are PVC film, cardboard; Described hole is circular, square or tri-angle-holed;
(3) combination of the little perforated acoustic board material of super thin fiber acoustic absorbant and ultra micro: with super thin fiber sound-absorbing material layer and the two-layer at least overlapping of the little perforated acoustic board material of ultra micro, by around material, making it to be superimposed together, form noise reduction sound fiber material cushion with suture.
The hot pin puncturing technique of described automatic braiding is that common small steel needle is installed in a needle tray that can move back and forth up and down automatically, after 100-250 ℃ of heating, bores a hole on acoustic board.
Described nonwoven fabrics forming technique is to utilize the air-flow effect to make fiber mix with the tackifier height, and evenly mats formation under the air-flow effect on former, is 2-6kgf/m at extraneous gaseous tension
2, hot pressing pressure 20-50kgf/m
2, temperature 80-120 ℃, time be die forming under the condition of 1-5min.
Described tackifier is starch adhesive, latex and urea glue.
The present technique inventive principle: sound wave is in the form realization Conversion of energy of the ultra tiny aperture of process with the air compression movement, after most of the absorption, the sound wave that residue penetrates passes through in the fiber acoustic absorbant and the inner elastomeric fiber again, nano-substance carries out sufficient Conversion of energy, acoustic wave energy consumption so repeatedly makes noise to reduce greatly, by the structure regulating technology, characteristics according to home appliance generating noise source and noise, the acoustic absorbant of system design different pore structures feature, and make up multistage perforated acoustic board and reach efficient reduction anti noise, can in full audio range, carry out the effect of high noise reduction.
Compared with prior art, the present invention has following advantage:
1. novel anti-noise fiber material, its density 10-100kg/m
3, thickness can be at 2-8mm, and product shows Natural color, ultrathin design, gives easily sensation, the soft and rich flexibility of matter.
The required production cycle of the inventive method extremely short, the production cycle of making this new material is about 2-4min, is significantly less than the production cycle of other acoustic damping materials (as acoustical cotton, sound suppressor).
3. in manufacture process, can not produce the noise that surrounding enviroment are exerted an influence, big G﹠W pollution, belong to cleaner production truly.
4. low cost of manufacture is produced a production cost that overlaps this new material and is about 30-60 unit/m
2
5. the novel anti-noise fiber material of patent manufacturing of the present invention is a kind of strong acoustic damping materials, can under full audio frequency, carry out noise reduction efficiently, particularly the strong noise reduction aspect under the high-frequency of Application of frequency conversion technique there is unique effect, extraordinary noise reduction is also arranged in low frequency ranges simultaneously, but noise reduction 2-8dB is than the also low 1-3dB of acoustical cotton noise reduction; The acoustic damping materials such as acoustical cotton of alternative cost height and noise reduction difference fully.
Description of drawings
Fig. 1 is the structural representation of a kind of anti-noise fiber material cushion of the present invention;
Fig. 2 a is the structural drawing of the little perforated acoustic board material of ultra micro of the present invention;
Fig. 2 b is that Fig. 2 a material is overlooked the face partial enlarged drawing;
Fig. 2 c is Fig. 2 a thickness direction sectional plane partial enlarged drawing;
Fig. 3 is the noise reduction comparison diagram of embodiment 1 anti-noise fiber material cushion under the different compressors frequency;
Wherein: B-acoustical cotton noise result; C-does not have the acoustical cotton blank test; The D-anti-noise fiber material cushion.
Embodiment
In order more deeply to understand the present invention, the present invention is further illustrated below in conjunction with further embodiment, need to prove that the scope of protection of present invention is not limited to the scope of embodiment statement.
A kind of preparation method of anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 70% pine fiber, 23% alkali-free glass fibre (specification: length 15mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 7% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 0.8%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.3% nano-calcium carbonate (model MCA3000, the chemical industry company limited of attaining in Shanghai produces) and 0.7% magnesium hydroxide (model exists: TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Nano-calcium carbonate mainly is that magnesium hydroxide then improves the fire protecting performance of fiber with raising fiber surface physico-chemical property; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 5.0% mixes, die forming.The nonwoven fabrics forming technique specifically is meant utilizes the air-flow effect to make fiber mix with the starch adhesive height, and evenly mats formation under the air-flow effect on former, at extraneous gaseous tension for being 3kgf/m in extraneous air pressure power
2, hot pressing pressure is 25kgf/m
2, temperature is that 100 ℃, time are under the condition of 2min, die forming is 8% with 98 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.5mm, stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on the PVC film, the hole is circular, bore dia is 0.2mm (be square regular distribution, pitch of holes is 0.4mm), thickness of slab 0.8mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as circle) is installed in a needle tray that can move back and forth up and down automatically, by after 200 ℃ of heating and in the 5s, bores a hole on starting material such as film PVC.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, as shown in Figure 1, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.4%) of step (2) preparation, at the 3rd layer of 5 super thin fiber acoustic absorbant that adopts step (1) preparation, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (0.9%) of step (2) preparation; The bottom then adopts 1 super thin fiber acoustic absorbant of step (1) preparation, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.
From Fig. 2 a, 2b, 2c can find out that the little perforated acoustic board material of ultra micro of this example preparation contains a large amount of micropunch.Upper epidermis at material adopts the buffering woven cloth; The second layer adopts the little perforated acoustic board material of ultra micro of porosity higher (0.63%), the 3rd layer adopt 5 layers of super thin fiber acoustic absorbant by knitting type around fixing and be superimposed and form the super thin fiber sound-absorbing material layer; The 4th layer of little perforated acoustic board material of ultra micro that adopts porosity lower (0.2%); The bottom then adopts 1 layer of super thin fiber acoustic absorbant.Being prepared into thickness is that 4.6mm thickness, average density are 45kg/m
3Anti-noise fiber material cushion.
After testing, anti-noise fiber material cushion will reach 2.32dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also hang down 1.38dB than acoustical cotton.Fig. 3 be with the impact of performance of anti-noise fiber material cushion frequency-changeable compressor noise reduction in air-conditioning of above-mentioned preparation and with the anti-acoustic capability comparative analysis figure of other acoustical cotton acoustic damping materials commonly used.Method of testing is in temperature is 8-10 ℃ semianechoic room, anti-noise fiber material cushion and acoustical cotton material commonly used are wrapped in around the compressor of the outer blower fan of air-conditioning, the good back of parcel is fixed on the compressor with adhesive plaster, also adopt the anti-noise fiber material cushion and the acoustical cotton material commonly used parcel of above-mentioned preparation at the top of compressor, after parcel is good air-conditioning equipment is installed, to detect with the noise figure of microphone under different compressors frequency on the middle position of distance air-conditioning equipment, by online video data on the test computer.As can be seen from Figure 3, when compressor low frequency (30-40) is moved, add acoustical cotton acoustic damping materials even more taller, and add the noise that anti-noise fiber material cushion can reduce the operation of compressor low frequency greatly, reduce about 1.5dB than the noise of the blank operation that does not add; And a big noise figure can appear when the 45Hz frequency is moved at compressor, adopt acoustical cotton and these routine acoustic damping materials can eliminate the noise of this frequency greatly comparatively speaking, and this routine gained anti-noise fiber material cushion can be reduced to lower.When the frequency-changeable compressor running frequency when 55Hz is above, adopt acoustic damping materials just clearly to the elimination of its noise, particularly adopt this routine anti-noise fiber material cushion under high frequency, to have better noise reduction than acoustical cotton, and the frequency-changeable compressor technology is the trend of modern household appliances development, but the frequency conversion meeting makes noise control become restricts its more factor of widespread use, particularly its noise figure will be very high under high frequency, thereby this routine anti-noise fiber material cushion is particularly suitable for the noise control of frequency-changeable compressor under high frequency, also has good noise control at medium and low frequency equally.Thus, can find out that this routine anti-noise fiber material cushion has the good noise reduction in full audio range.
The material that obtains by present embodiment has the good noise reduction in the full audio range, the anti-acoustic capability under high frequency condition particularly, not worse than general in the market compressor noise-reduction acoustical cotton material property, and characteristics with environment-friendly and green, cost is low, have good fire prevention from putting out characteristics, have good application prospects.
A kind of preparation method of anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 64% aspen fibers by using silicon, 23% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 13% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 0.9%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.8% nano-calcium carbonate (model MCA3000, the chemical industry company limited of attaining in Shanghai produces) and 1.1% magnesium hydroxide (model: TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 4.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with latex tackifier height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 5kgf/m in extraneous air pressure power
2, hot pressing pressure is 43kgf/m
2, temperature is that 112 ℃, time are under the condition of 3min, die forming is 8% with 98 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.3mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on cardboard, the hole is circular, bore dia is 0.2mm (be square regular distribution, pitch of holes is 0.3mm), thickness of slab 0.35mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as circle) is installed in a needle tray that can move back and forth up and down automatically, by after 200 ℃ of heating and in the 5s, bores a hole on paper plate raw material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.3%), adopts 5 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (0.7%); The bottom then adopts 1 super thin fiber acoustic absorbant, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 2.5mm thickness, average density is 48kg/m
3The acoustic damping materials pad.
After testing, this routine gained anti-noise fiber material cushion will reach 1.93dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 1.02dB than acoustical cotton.
Embodiment 3
A kind of method for preparing novel anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 63% non-timber rice-straw fibre, 21% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 16% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 0.2%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.4% nano-calcium carbonate (model MCA3000, the chemical industry company limited of attaining in Shanghai produces) and 0.8% magnesium hydroxide (model: TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 6.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with urea glue adhesive agent height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 5kgf/m in extraneous air pressure power
2, hot pressing pressure is 44kgf/m
2, temperature is that 118 ℃, time are under the condition of 4min, die forming is 8% with 100 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.4mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on the PVC film, the hole is circular, bore dia is 0.4mm (be square regular distribution, pitch of holes is 0.4mm), thickness of slab 0.3mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as circle) is installed in a needle tray that can move back and forth up and down automatically, by after 220 ℃ of heating and in the 5s, bores a hole on film PVC starting material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.3%), adopts 5 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (0.7%); The bottom then adopts 1 super thin fiber acoustic absorbant, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 3.0mm thickness, average density is 55kg/m
3The acoustic damping materials pad.
After testing, this routine gained anti-noise fiber material cushion will reach 3.32dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 2.18dB than acoustical cotton.
A kind of method for preparing novel anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 58% non-timber rice-straw fibre, 30% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 12% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 3.4%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.7% nano-calcium carbonate (MCA3000 type, the chemical industry company limited of attaining in Shanghai produces) and 0.65% magnesium hydroxide (TIGER-B15 type, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 7.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with the starch adhesive height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 6kgf/m in extraneous air pressure power
2, hot pressing pressure is 45kgf/m
2, temperature is that 113 ℃, time are under the condition of 3min, die forming is 8% with 98 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.4mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on film PVC, the hole is circular, bore dia is 1.4mm (be square regular distribution, pitch of holes is 0.3mm), thickness of slab 1.3mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as circle) is installed in a needle tray that can move back and forth up and down automatically, by after 210 ℃ of heating and in the 5s, bores a hole on film PVC starting material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.1%), adopts 7 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (0.6%); The bottom then adopts 1 super thin fiber acoustic absorbant, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 5.8mm thickness, average density is 56kg/m
3The acoustic damping materials pad.
After testing, this routine gained anti-noise fiber material cushion will reach 4.43dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 2.87dB than acoustical cotton.
Embodiment 5
A kind of method for preparing novel anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 70% non-timber rice-straw fibre, 20% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 10% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 0.6%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.9% nano-calcium carbonate (model MCA3000, the chemical industry company limited of attaining in Shanghai produces) and 2.4% magnesium hydroxide (model TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 8.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with urea glue adhesive agent height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 6kgf/m in extraneous air pressure power
2, hot pressing pressure is 45kgf/m
2, temperature is that 98 ℃, time are under the condition of 3min, die forming is 8% with 87 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.3mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilization weaves hot pin puncturing technique automatically and punches on cardboard, and the hole is circular, and bore dia is 1.7mm (be square regular distribution, pitch of holes is 0.2mm), thickness of slab 0.5mm, flattens straightening after the punching, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as circle) is installed in a needle tray that can move back and forth up and down automatically, by after 240 ℃ of heating and in the 5s, bores a hole on paper plate raw material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.7%), adopts 4 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (0.64%); The bottom then adopts 2 super thin fiber acoustic absorbants, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 3.8mm thickness, average density is 49kg/m
3Novel acoustic damping materials pad.
After testing, this routine gained anti-noise fiber material cushion will reach 2.73dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 1.47dB than acoustical cotton.
Embodiment 6
A kind of method for preparing novel anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 53% non-timber rice-straw fibre, 27% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 10% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 1.9%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.76% nano-calcium carbonate (model MCA3000, Shanghai attain chemical industry company limited) and 2.76% magnesium hydroxide (model TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 5.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with latex tackifier height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 6kgf/m in extraneous air pressure power
2, hot pressing pressure is 47kgf/m
2, temperature is that 117 ℃, time are under the condition of 5min, die forming is 8% with 96 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.3mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on cardboard, the hole is a triangle, the delthyrium length of side is 0.7mm (be square regular distribution, pitch of holes is 0.3mm), thickness of slab 0.75mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as triangle) is installed in a needle tray that can move back and forth up and down automatically, by after 220 ℃ of heating and in the 5s, bores a hole on paper plate raw material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.7%), adopts 8 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (1.3%); The bottom then adopts 1 super thin fiber acoustic absorbant, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 4.2mm thickness, average density is the acoustic damping materials pad of 52kg/m3.
After testing, this routine gained anti-noise fiber material cushion will reach 5.47dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 4.14dB than acoustical cotton.
Embodiment 7
A kind of method for preparing novel anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 65% non-timber rice-straw fibre, 28% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 12% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 2.3%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.7% nano-calcium carbonate (model MCA3000, the chemical industry company limited of attaining in Shanghai produces) and 2.3% magnesium hydroxide (model TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 6.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with the starch adhesive height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 4kgf/m in extraneous air pressure power
2, hot pressing pressure is 34kgf/m
2, temperature is that 88 ℃, time are under the condition of 4min, die forming is 8% with 98 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.5mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on cardboard, the hole is a triangle, the hole length of side is 1.1mm (be square regular distribution, pitch of holes is 0.4mm), thickness of slab 0.42mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as triangle) is installed in a needle tray that can move back and forth up and down automatically, by after 220 ℃ of heating and in the 5s, bores a hole on paper plate raw material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.2%), adopts 4 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (1.3%); The bottom then adopts 1 super thin fiber acoustic absorbant, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 3.34mm thickness, average density is 49kg/m
3The acoustic damping materials pad.
After testing, this routine gained anti-noise fiber material cushion will reach 2.43dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 1.32dB than acoustical cotton.
Embodiment 8
A kind of method for preparing novel anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 63% non-timber rice-straw fibre, 26% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 11% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 2.1%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.9% nano-calcium carbonate (model MCA3000, the chemical industry company limited of attaining in Shanghai produces) and 1.6% magnesium hydroxide (model TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 5.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with the starch adhesive height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 4kgf/m in extraneous air pressure power
2, hot pressing pressure is 47kgf/m
2, temperature is that 87 ℃, time are under the condition of 3min, die forming is 8% with 99 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.4mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on film PVC material, the hole is a triangle, the hole length of side is 0.23mm (be square regular distribution, pitch of holes is 0.3mm), thickness of slab 0.5mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as triangle) is installed in a needle tray that can move back and forth up and down automatically, by after 230 ℃ of heating and in the 5s, bores a hole on film PVC material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (1.9%), adopts 5 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (0.6%); The bottom then adopts 1 super thin fiber acoustic absorbant, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 3.4mm thickness, average density is 47kg/m
3The acoustic damping materials pad.
After testing, this routine gained anti-noise fiber material cushion will reach 2.87dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 1.66dB than acoustical cotton.
Embodiment 9
A kind of method for preparing novel anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 61% non-timber rice-straw fibre, 28% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 11% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 1.5%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.56% nano-calcium carbonate (model MCA3000, the chemical industry company limited of attaining in Shanghai produces) and 2.87% magnesium hydroxide (model TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 8.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with latex tackifier height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 6kgf/m in extraneous air pressure power
2, hot pressing pressure is 54kgf/m
2, temperature is that 103 ℃, time are under the condition of 4min, die forming is 8% with 97 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.5mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on cardboard, the hole is a square, the hole length of side is 0.35mm (be square regular distribution, pitch of holes is 0.4mm), thickness of slab 0.7mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as square) is installed in a needle tray that can move back and forth up and down automatically, by after 230 ℃ of heating and in the 5s, bores a hole on paper plate raw material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.1%), adopts 5 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (1.4%); The bottom then adopts 1 super thin fiber acoustic absorbant, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 4.4mm thickness, average density is 47.8kg/m
3Novel acoustic damping materials pad.
After testing, this routine gained anti-noise fiber material cushion will reach 2.47dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 1.62dB than acoustical cotton.
A kind of method for preparing anti-noise fiber material cushion comprises the steps and process conditions:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by 66% non-timber rice-straw fibre, 23% alkali-free glass fibre (specification: length 12mm * fineness 12um, the outstanding commerce and trade of Shijiazhuang City magnificence company limited produces) and 11% mineral wool fiber (specification: particle diameter≤30mm, the fire-resistant energy-saving material of Langfang Qi Yuan company limited produces) mixing formation.In the principal fiber material, add avicel cellulose (the model HW325 that accounts for over dry principal fiber material weight 2.2%, so chemical industry company limited in Henan Province's produces), and adding accounts for over dry principal fiber material weight 0.87% nano-calcium carbonate (model MCA3000, the chemical industry company limited of attaining in Shanghai produces) and 2.6% magnesium hydroxide (model TIGER-B15, Dongguan City Dao Er chemical industry company limited produces), blending and modifying; Again by the nonwoven fabrics forming technique with after the starch adhesive height that accounts for over dry principal fiber material weight 10.0% mixes, die forming, specifically be meant and utilize the air-flow effect to make fiber mix with the starch adhesive height, and under the air-flow effect, evenly mat formation on former, at extraneous gaseous tension for being 4kgf/m in extraneous air pressure power
2, hot pressing pressure is 42kgf/m
2, temperature is that 112 ℃, time are under the condition of 5min, die forming is 8% with 97 ℃ of temperature air pneumatic conveying dryings to water percentage in hothouse after the moulding, forming thickness is the fiber acoustic absorbant of 0.4mm, and stores.
(2) preparation of the little perforated acoustic board material of ultra micro: utilizing automatically, the hot pin puncturing technique of braiding punches on cardboard, the hole is a triangle, the hole length of side is 0.3mm (be square regular distribution, pitch of holes is 0.2mm), thickness of slab 0.3mm, and the punching back flattens straightening, also stores; Automatically the hot pin puncturing technique of braiding is that common small steel needle (just needle end part is shaped as triangle) is installed in a needle tray that can move back and forth up and down automatically, by after 250 ℃ of heating and in the 5s, bores a hole on paper plate raw material.
(3) preparation of anti-noise fiber material cushion: the super thin fiber acoustic absorbant and the ultra micro perforated acoustic board material of preparation alternately are used according to stacked principle, in the upper epidermis employing buffering woven cloth of material; The second layer adopts the little perforated acoustic board material of ultra micro of a porosity higher (2.1%), adopts 5 super thin fiber acoustic absorbants at the 3rd layer, the 4th layer of little perforated acoustic board material of ultra micro that adopts a porosity lower (0.8%); The bottom then adopts 1 super thin fiber acoustic absorbant, above-mentioned layers of material is stacked gradually, adopt knitting technology by around anti-noise fiber material cushion, being fixed, this method was both convenient and simple, can make full use of the linking (helping the raising of sound absorbing capabilities) in different materials surface of contact duct again.Be prepared into 3.0mm thickness, average density is the acoustic damping materials pad of 49kg/m3.
After testing, this routine gained anti-noise fiber material cushion will reach 2.73dB to the average noise reduction of air-conditioning frequency-changeable compressor, can also reduce 1.46dB than acoustical cotton.
Can better implement the present invention as mentioned above.
Claims (8)
1, a kind of anti-noise fiber material cushion is characterized in that: formed by super thin fiber sound-absorbing material layer and the two-layer at least overlapping of ultra micro perforated acoustic board material layer, thickness is 2-8mm; Described ultra micro perforated acoustic board material layer is that porosity is ultra-thin PVC, the cardboard of 0.2-3%; Described super thin fiber sound-absorbing material layer is that the fiber acoustic absorbant of 0.2-2mm is formed by stacking by the 1-10 layer thickness; Described super thin fiber acoustic absorbant is made up of principal fiber material and auxiliary material, by weight percentage, the prescription of described principal fiber material is made up of the vegetable fibre of 50-70%, the glass fibre of 20-30% and the mineral fibres of 10-20%, and the prescription of described auxiliary material is made up of the nano-cellulose fiber that accounts for over dry principal fiber material weight 0.5-4%, 0.2-1% nano-calcium carbonate, 0.1-3% magnesium hydroxide and the tackifier of 3-8%.
2, noise reduction sound fiber material cushion according to claim 1 is characterized in that: described noise reduction sound fibrous material outside surface also comprises the buffering woven cloth.
3, noise reduction sound fiber material cushion according to claim 1 and 2, it is characterized in that: the ground floor ultra micro perforated acoustic board material layer porosity of described anti-noise fiber material cushion is 0.8-3%, and ground floor ultra micro perforated acoustic board material layer porosity is 0.2-2%.
4, noise reduction sound fiber material cushion according to claim 1 and 2 is characterized in that: described noise reduction sound fibrous material average density is 10-100kg/m
3
5, the preparation method of the described noise reduction sound of claim 1 fiber material cushion is characterized in that comprising the steps:
(1) preparation of super thin fiber acoustic absorbant: with pressure disc grinding machine disassociation principal fiber material, by weight percentage, the principal fiber material is by the vegetable fibre of 50-70%, the glass fibre of 20-30% and 10-20% mineral wool fiber mix to be formed, in the principal fiber material, add the avicel cellulose that accounts for over dry principal fiber material weight 0.5-4%, 0.2-1% nano-calcium carbonate and 0.1-3% magnesium hydroxide, blending and modifying, again by nonwoven fabrics forming technique and the tackifier mixing die forming that accounts for over dry principal fiber material weight 3-8%, in hothouse, be 8-10% after the moulding, form the fiber acoustic absorbant with 80-100 ℃ of temperature pneumatic conveying drying to water percentage; 13,429,275,731 13027210582
The super thin fiber sound-absorbing material layer is that the fiber acoustic absorbant of 0.2-2mm is bored a hole around the material back and forth by suture and fixing by the 1-10 layer thickness, makes each layer super thin fiber acoustic absorbant be superimposed, and forms the super thin fiber sound-absorbing material layer;
(2) preparation of the little perforated acoustic board material of ultra micro: utilize the hot pin puncturing technique of automatic braiding to punch on acoustic board, the aperture is 0.1-2mm, thickness of slab 0.2-2mm, and the punching back flattens straightening, also stores; The described starting material that are used to prepare the little perforated acoustic board material of ultra micro are sheet metal, PVC film, cardboard; Described hole is circular, square or tri-angle-holed;
(3) combination of the little perforated acoustic board material of super thin fiber acoustic absorbant and ultra micro: with super thin fiber sound-absorbing material layer and the two-layer at least overlapping of the little perforated acoustic board material of ultra micro, by around material, making it to be superimposed together, form noise reduction sound fiber material cushion with suture.
6, the preparation method of noise reduction sound fiber material cushion according to claim 5, it is characterized in that: the hot pin puncturing technique of described automatic braiding is that common small steel needle is installed in a needle tray that can move back and forth up and down automatically, after 100-250 ℃ of heating, on acoustic board, bore a hole.
7, the preparation method of noise reduction sound fiber material cushion according to claim 5, it is characterized in that: described nonwoven fabrics forming technique is to utilize the air-flow effect to make fiber mix with the tackifier height, and under the air-flow effect, evenly mat formation on former, be 2-6kgf/m at extraneous gaseous tension
2, hot pressing pressure 20-50kgf/m
2, temperature 80-120 ℃, time be die forming under the condition of 1-5min.
8, the preparation method of noise reduction sound fiber material cushion according to claim 5 is characterized in that: described tackifier is starch adhesive, latex and urea glue.
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| CN101807394A (en) * | 2010-04-13 | 2010-08-18 | 王艳 | Micro-nano-fiber composite layered sound-absorbing material |
| CN103325368A (en) * | 2013-06-28 | 2013-09-25 | 上海声望声学工程有限公司 | Sound absorption protective panel and manufacturing method thereof |
| CN103369428A (en) * | 2013-06-12 | 2013-10-23 | 西安费斯达自动化工程有限公司 | Detection and estimation method for background subtraction of environment noise |
| CN103522667A (en) * | 2012-07-06 | 2014-01-22 | 苏州维艾普新材料有限公司 | Core material with locking side on edge and preparation method thereof |
| CN104175622A (en) * | 2014-08-14 | 2014-12-03 | 上海华特汽车配件有限公司 | Porous noise reduction product and preparation method and use thereof |
| CN104882138A (en) * | 2015-04-01 | 2015-09-02 | 中国科学院金属研究所 | Sound-absorbing structure of porous foam silicon carbide sound-absorbing material |
| CN105863994A (en) * | 2016-04-25 | 2016-08-17 | 珠海格力电器股份有限公司 | Sound insulating cover for compressor and assembly method of compressor |
| CN106319765A (en) * | 2016-08-19 | 2017-01-11 | 马鞍山湖滨无纺布科技有限公司 | Nonwoven fabric with performances of toughening and retarding flame and capability of releasing negative oxygen ions and preparation method of nonwoven fabric |
| CN107434371A (en) * | 2016-05-25 | 2017-12-05 | 北新集团建材股份有限公司 | A kind of mineral wool sound absorption board of anti-electromagnetic radiation and preparation method thereof |
| CN109263175A (en) * | 2018-08-14 | 2019-01-25 | 东华大学 | A kind of low frequency absorption rubber-base composite material and preparation method thereof |
| WO2019051761A1 (en) * | 2017-09-15 | 2019-03-21 | 3M Innovative Properties Company | Non-woven fibrous web and methods thereof |
| CN110241935A (en) * | 2019-05-20 | 2019-09-17 | 吉林大学 | A kind of film holed technique plate and its preparation method and application |
| CN113063856A (en) * | 2021-04-28 | 2021-07-02 | 芜湖利通新材料有限公司 | Noise testing device for vibration damping material for air conditioner outdoor unit |
| CN113189203A (en) * | 2021-04-28 | 2021-07-30 | 芜湖利通新材料有限公司 | Noise test system for vibration damping pad |
| CN113903321A (en) * | 2021-12-09 | 2022-01-07 | 北京市科学技术研究院城市安全与环境科学研究所 | Low pressure back of body chamber sound absorption unit and building wall |
| CN114590210A (en) * | 2022-03-09 | 2022-06-07 | 淮阴师范学院 | Sound absorption material applied to noise reduction in vehicle |
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| CN101807394A (en) * | 2010-04-13 | 2010-08-18 | 王艳 | Micro-nano-fiber composite layered sound-absorbing material |
| CN103522667A (en) * | 2012-07-06 | 2014-01-22 | 苏州维艾普新材料有限公司 | Core material with locking side on edge and preparation method thereof |
| CN103369428A (en) * | 2013-06-12 | 2013-10-23 | 西安费斯达自动化工程有限公司 | Detection and estimation method for background subtraction of environment noise |
| CN103325368A (en) * | 2013-06-28 | 2013-09-25 | 上海声望声学工程有限公司 | Sound absorption protective panel and manufacturing method thereof |
| CN104175622A (en) * | 2014-08-14 | 2014-12-03 | 上海华特汽车配件有限公司 | Porous noise reduction product and preparation method and use thereof |
| CN104882138A (en) * | 2015-04-01 | 2015-09-02 | 中国科学院金属研究所 | Sound-absorbing structure of porous foam silicon carbide sound-absorbing material |
| CN105863994A (en) * | 2016-04-25 | 2016-08-17 | 珠海格力电器股份有限公司 | Sound insulating cover for compressor and assembly method of compressor |
| CN107434371A (en) * | 2016-05-25 | 2017-12-05 | 北新集团建材股份有限公司 | A kind of mineral wool sound absorption board of anti-electromagnetic radiation and preparation method thereof |
| CN106319765A (en) * | 2016-08-19 | 2017-01-11 | 马鞍山湖滨无纺布科技有限公司 | Nonwoven fabric with performances of toughening and retarding flame and capability of releasing negative oxygen ions and preparation method of nonwoven fabric |
| WO2019051761A1 (en) * | 2017-09-15 | 2019-03-21 | 3M Innovative Properties Company | Non-woven fibrous web and methods thereof |
| CN109263175A (en) * | 2018-08-14 | 2019-01-25 | 东华大学 | A kind of low frequency absorption rubber-base composite material and preparation method thereof |
| CN110241935A (en) * | 2019-05-20 | 2019-09-17 | 吉林大学 | A kind of film holed technique plate and its preparation method and application |
| CN113063856A (en) * | 2021-04-28 | 2021-07-02 | 芜湖利通新材料有限公司 | Noise testing device for vibration damping material for air conditioner outdoor unit |
| CN113189203A (en) * | 2021-04-28 | 2021-07-30 | 芜湖利通新材料有限公司 | Noise test system for vibration damping pad |
| CN113189203B (en) * | 2021-04-28 | 2022-04-05 | 安徽蓝格利通新材应用股份有限公司 | Noise test system for vibration damping pad |
| CN113903321A (en) * | 2021-12-09 | 2022-01-07 | 北京市科学技术研究院城市安全与环境科学研究所 | Low pressure back of body chamber sound absorption unit and building wall |
| CN114590210A (en) * | 2022-03-09 | 2022-06-07 | 淮阴师范学院 | Sound absorption material applied to noise reduction in vehicle |
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