TW200916317A - Sound buffering-absorbing member - Google Patents

Abstract

The subject of the present invention is to provide a sound buffering-absorbing member which is applicable to motorcars and exhibits excellent sound buffering-absorbing property. The sound buffering-absorbing member 2 consists of a core part 2 formed, lengthwise and crosswise, with plural tubular measures 22, a base plate 3 formed on one side of the core part 2, and a porous part 4 attached to the other side of the core part 2. The sound wave striking against the sound buffering-absorbing member can be decayed by the measures 22 and absorbed by the porous part 4. In order to suitably exhibit sound absorbing performance, the resistance to gas transmission of the porous part 4 is set as 0. 5 to 5. 0 kPa*s/m.

Description

200916317, IX. Description of the invention: [Technical field to which the invention pertains]: The lower side: 缓冲 relates to a buffered sound absorbing member which is disposed, for example, on the upper or lower side of the engine or chassis of the automobile. [Prior Art]: If the underside of the engine of the car or the underside of the chassis of the car, in order to prevent the small stones rolled up in the car from being damaged, the noise such as sounds invade the car and it is good to control the lights. Drop ' ^ ^ r, -Τ - set the balance and sound. In addition, in the case of the roots and the speeding, the damper is placed on the upper side of the engine (the engine::; the surface; the cushioning sound absorbing material is also used as a sound absorbing material in which the porous body is used as the material. It is composed of a substrate, and MM Μ 12 Α Japanese material jin, or a sound absorbing material of the porous material family, and a skin material/porous body is patented for the female 彳.Q + actor (for example, Patent Document 1, (2) In the case of the porous body having the sound-absorbing effect gas, it is used as the gas-fish field π, which is disclosed in the Japanese Patent Publication No. 12.086490.缓冲 孔 质 质 的 的 质 π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π π The buffer sound absorbing member is also the above-mentioned buffer sound absorbing structure, and is characterized in that a plurality of cylindrical components 319638 5 200916317 are formed by the longitudinal sill. 22 + heart material 2 and one side of the core material 2 are set. The substrate 3, and 2 are porous to the other side of the core material 2 a cushioning suction member 1 composed of a material, the material of the core material 2 is a thermoplastic plastic, and the ventilation resistance of the porous material 4 is 0.5 to 5.0 kPa · s / m. Usually, the thermoplastic plastic is used as the material. The core material 2 is produced by vacuum-forming and/or molding the thermoplastic plastic sheet 21. Further, when the thermoplastic plastic sheet 21 is subjected to vacuum and/or surface molding, the thermoplastic plastic sheet 21 is formed. It is preferable to stretch the predetermined amount in the transverse direction before molding. '(Effect of the invention) [Action] In the buffer sound absorbing member of the present invention described above, except for the ventilation resistance, it is 5.0 kPa. S//in The buffering and sound absorbing effect generated by the porous material 4 is also because the sound wave in the component 22 of the invading core material 2 reflects to the inner peripheral wall of the component cell 2 and reduces its energy to have a sound-blocking effect. The core material 2 of the material is manufactured by vacuum and/or pressure forming which is suitable for mass production and molding of complex shapes: when the thermoplastic plastic sheet 21 is subjected to vacuum and continuous hole forming, if Plastic 21 first to the transverse softening point is higher 孰 = 2. In particular, when the plastics such as engineering plastics are used as the material, the method of 'the thermoplastic plastic sheet is not effective: and, in particular, the heating soft τ non-hanging is easy to sag. Thermoplastic plastic as material

31963B 6 200916317 The sag can be removed by stretching, and the thermoplastic sheet 21 can be uniformly formed in the molding die to the horizontal direction. [Effect] It is large and simple, and the present invention provides a buffered sound absorbing member which is excellent in sound absorbing and sound absorbing effects. [Embodiment] Hereinafter, the present invention will be described in detail. The buffering and sound absorbing member of the invention is, for example, as shown in Fig. i, and the substrate 3 set on the surface of the core material 2, and the porous material 4 placed on the other side of the anger material 2 composition. [Core Material] The "I material 2" of the shank has a configuration in which a plurality of square tubular members 22 are formed vertically and horizontally as shown in Figs. 2 and 3, for example. The core material 2, as shown in FIGS. 4 and 5, is formed by forming a plurality of bottomed square cylindrical members in a longitudinal direction and a transverse direction, for example, by vacuum and/or pressure forming. m. If necessary, the bottom surface of the bottom open/cylindrical component 22A can be removed to form the bottomless square tubular member 22 shown in Figs. 2 and 3. As a material used for the core material 2 of the present invention, for example, polystyrene (10), acrylonitrile-styrene copolymer (AS), acrylonitrile-butadiene-benzene copolymer (ABS), acrylonitrile-ethylene-benzene Ethylene copolymer (AES), polyethylene (PE) ♦ propylene (PP), polymethyl methacrylate (PMMA), ethylene-propylene copolymer (10)) 'polyethylene (pvc), vinylidene chloride copolymer, Ethylene, ethylene ethoxide copolymer, poly- 319638 7 200916317, olefin (modified Pp) and other thermoplastics modified by PE and / or EPR, or two or more of the above thermoplastics? K alloy (P〇lymer al l〇y) or polymer blend; or polyamine (pA), polyester, polyacetal (p〇M), -polycarbonate (PC), Poly(p-butylene dicarboxylate) (PET), polybutylene terephthalate (PBT), poly; epsilon (psf), polyether (pes), polyphenylene ether (ppE), polysulfide趟 (PPS), poly aryl g (par), polyether ether ketone (peek), polyamidimide (PAI), polyimine (PI), polyetherimide (PEI), polyamine Bismaleimide, decylpentene copolymer (ΤΡχ), cellulose acetate (CA), etc., M,, "plastic engineering plastics, or polyallyl ether and other liquid crystal engineering plastics, or polytetrachloro Compressed molding engineering plastics such as fluororesin such as ethylene (PTEF), or amorphous polymers, polyamine-based bismaleimide, bismaleimide-triterpene thermosetting aromatic polyimine, etc. Engineering plastics, or polymer alloys or polymer blends containing more than two kinds of engineering plastics; or one or more of the above engineering plastics and one or two of the other thermoplastics such as PS, PP, modified PP, etc. Polymer alloy on or in the polymer alloy (addition of polyester, polyacrylate, acrylic rubber (AR), butyl rubber, tantalum rubber, polyurethane rubber (UR), fluoride rubber, polysulfide Rubber, graft rubber, butadiene rubber (BR), polybutadiene, isoprene rubber (IR), polyisoprene, chloroprene rubber (CR), polyisobutylene rubber (IBR) , polybutene rubber, Thiokol rubber, polysulfide rubber, polyether rubber, epichlorohydrin rubber, norbornene terpo lymer, warp group or rebel end Polybutadiene, partially hydrogenated styrene-butadiene block copolymer, chlorosulfonated rubber, isobutylene-isoprene rubber (IIR), acrylate - 319638 200916317 butadiene rubber (ABR), benzene Ethylene-butadiene rubber (SBR), acrylonitrile-butadiene rubber (NBR), pyridine-butadiene rubber, styrene-isoprene rubber (SIR), styrene-ethylene copolymer, poly Styrene-polybutadiene-polystyrene (SBS), polystyrene-polyisoprene - polystyrene (SIS), poly(α-methylstyrene)-polybutadiene-poly(α-methylstyrene) (a-MeSB a -MeS), poly(α-methylstyrene)- Polyisoprene __ poly(α-mercaptostyrene), acetam-propylene copolymer (ερ), butadiene-styrene copolymer CBS), ethylene-propylene-ethylene copolymer, ethylene - propylene-diene copolymer, ethylene-propylene copolymer rubber, ethylene-butylene-ruthenium copolymer rubber, ethylene-propylene-ethylidene norbornene copolymer rubber, ethylene_propylene_bicyclononadiene copolymer rubber , ethylene-propylene-ruthenium, 4-hexadiene copolymer rubber, ethylene-butene-1-ethylidene norbornene copolymer rubber, ethylene-butylene-bu-biscyclopentadiene copolymer rubber, ethylene_ Butylene-, 4-hexadiene copolymer rubber, acrylonitrile-chloroprene rubber (NCR), styrene-chloroprene rubber (10), styrene-butadiene-styrene (SBS) copolymerization , styrene-isoprene-styrene (SIS) copolymer, styrene-hydrogenated polyolefin-styrene (SEBS) copolymer, etc. styrene-based thermoplastic elastomer or butyl benzenea polymer block of a vinyl block copolymer, a styrene-rubber such as a (four) segment _styrene copolymer, and/or a synthetic rubber, or a synthetic rubber, or a polymer alloy; or Polylactic acid obtained from the powder of the temple: Biodegradable resin of the raw material. However, as the best thermoplastics, it is the polymer alloy of the above engineering plastics or the modified PP. ^ For the above PE', the density of Q.94i or higher can be used. The density of the PF to 〇. 940 is 126, and the initial degree is 〇.91〇 to 〇925 319638 9 200916317 Low-density PE and ultra-low-density pE having a density of 0.909 or less, but it is preferable to use low-density PE which has good mixing property with PP and improved ductility. ~ As the above EPR, a rubbery copolymer of ethylene and propylene (hereinafter referred to as EPM), ethylene, propylene, and dicyclopentadiene (d icy cl open tad i ene), ethylidene norbornene (ethy 1) may be used. Any one of an ethylene-propylene-diene terpolymer (hereinafter referred to as EpDM) in which a diene component such as [,4_hexadiene is copolymerized] is idenenorb〇rnene). The most preferred thermoplastic material is exemplified by the above-mentioned modification pp. However, in the above ρρ, PE and/or coffee are blended in the range of 5 to 3 % by mass. When the blending amount of PE and/or EPR is less than 5% by mass, the ductility of PP cannot be sufficiently improved, and good moldability cannot be obtained. Further, when the blending amount of PE and/or EPR is more than 3% by mass, the hardness of the resulting modified PP is insufficient, and the shape and dimensional stability or heat resistance are deteriorated. In the above-mentioned modified PP, one type of thermoplastic resin such as a vinyl chloride resin, an acrylic resin, a mercapto acrylate resin, a partial vinyl resin, a vinyl propionate resin, or a polyester resin may be mixed as necessary. More than two. - The above modified PP is usually in the form of a sheet and can be formed on one or both sides of the modified sheet: PE, unmodified pp, EPR, ethylene-vinyl acetate copolymer, etc.; vinyl chloride resin Thermoplastics such as acrylic resin, methacrylate resin, vinylidene chloride resin, styrene resin, vinyl propionate resin, styrene-butadiene copolymer, polyester resin, etc. 319638 10 200916317 Plastic A film of a film or a foam of the thermoplastic plastic. From the point of view of layering and heat resistance, the film with no modified pp is the best, especially when the helmet is added to the modified pp, the above-mentioned bedding, and the 钺 filler can ensure the smoothness of the core surface. It also improves chemical resistance. < ^ in the above modified PP can also add carbonic acid dance, carbonic acid town, sulfuric acid key sulfuric acid dance, sulfur, _, phosphorus _, hydroxide word, hydrazine, hydrazine, oxidation town, titanium oxide, Iron oxide, zinc oxide, oxidized inscription, 3 fossil eve, Shiyakutu soil, dolomite, gypsum, talc, clay, asbestos, mica, =:: bentonite small white carbon, carbon black, iron powder two stone powder, blast furnace Inorganic, phase-type or more than crushing, fly ash, cement, cerium oxide powder, etc., to improve mechanical strength or heat resistance. In the above thermoplastic plastics, cotton (1)nter), 2::), poplar (1), wood powder, coconut powder, walnut powder, starch, surface and other organic fillers, cotton, hemp, bamboo fiber, coconut fiber may be added. Natural fibers such as wool, asbestos and kenaf; synthetic fibers such as polyamine fiber, polyester fiber, polympropylene (tetra) fiber, vinyl chloride fiber and vinylidene fiber, and visCGSe fiber. Semi-synthetic fiber such as acetic acid g|fiber; one or the kind of fibrous filler such as asbestos fiber, glass fiber, carbon fiber, ceramic fiber, metal fiber, whisker fiber, etc. Properties, dimensional stability, I shrinkage and tensile strength. The inorganic or organic filler or the fibrous filler is usually added in an amount of from about 0.05 to about 200% by mass based on the thermoplastic plastic. 8. The above thermoplastic plastics can also be colored by a pigment or a dye, and can be further added with a plasticizer such as DOP (dioctyl phthalate) or DBp (next 319638 200916317 phthalic acid dibutyl). ; antioxidants, antistatic agents, , flame retardants, fire retardants, insect repellents, preservatives, waxes, lubricants; stabilizers, anti-aging agents, UV absorbers (10) absorbents; chemical hair or capsules A foaming agent such as a foaming agent. These ingredients can also be added to the above. Generally, the thickness of the thermoplastic plastic sheet 21 is generally "to 1 or _" is difficult to be around 33 to 0·· and the thermoplastic plastic is modified to have a PP%, a film formed on the surface of the sheet 21. The thickness is set to the left and right. And the thermoplastic plastic sheet 21 can also be a hair core of the present invention, the thermoplastic plastic 21 is first heated and softened, and then introduced into a vacuum and/or an air-to-air molding machine. Work and / evacuation molding. And the thermoplastic soft kneading material 21 in the heat-softening state is stretched before the vacuum and/or molding machine is introduced, that is, in the direction of the transverse direction (and the direction to the direction of the molding machine). The predetermined amount is preferred. Also, when the thermoplastic plastic sheet 21 in the heat-softened state is not stretched in advance and directly introduced into the molding machine, the thermoplastic plastic sheet 21 cannot be uniformly stretched: for example, deep drawing in the obtained molded body occurs (deep hit (10) 丨ng) The thickness of the portion is thinned, and the thickness of the portion obtained by shallow drawing (sal 1) is thickened, and the thickness of the obtained molded body is not uniform. On the other hand, when the thermoplastic plastic sheet in the heat-softened state is stretched in advance, the thermoplastic plastic 21 is adapted to be in an extended state, that is, it is in an easily stretchable state, so that it can be vacuumed or formed in a vacuum molding machine. 319638 12 200916317 - The spreading force is evenly obtained until the entire thermoplastic molded body (in this case, the core material 2) becomes large n. Therefore, the deep drawing is not easy to occur in the deep drawing portion. Therefore, the molding of the component shown in FIG. 4 is such that the amount of stretching of the plastic sheet 21 in the lateral direction is set to 1% of the originality. If the amount of stretching is not, the thermoplastic plastic sheet 21 is not suitable for ^ ^ iy 〇 '. ', , & and when heated and softened 敎 』 The sagging of the knee does not sufficiently eliminate the sagging. When the tensile denier and the original width are 15%, the thermoplastic plastic sheet which is in the form of the shape before the molding is reduced, and the thermoplastic sheet may be damaged. When the core material 2 of the present invention is produced, in addition to the above-described vacuum and/or pressure forming, press molding, injection molding, or the like can be applied. The thickness of the above core material 2 is preferably set to 5 to 1 Å. The thickness of the above *=2 corresponds to the height of the tubular component 22 ("h" in Fig. 3), and as long as the component 22 of the height of this degree, the sound wave intruding into the component 22 will be The inner peripheral wall of the cell 22 is reflected to appropriately attenuate the energy. When the height h of the component cell 22 is less than 5, the sound wave in the intrusive component 22 will not be reflected on the inner peripheral wall of the component cell 22, and may be spurted. When the height h of the sub-segment 22 exceeds i, the thickness of the buffered sound absorbing member 1 increases, and as the thickness increases, the buffered sound absorbing member also becomes larger, so that it is mounted on a car or the like. The installation space on the top is increased. In the embodiment shown in Fig. 1, the bottomed component of the core material 21 is cut.

31963E 13 200916317, the bottom surface of 22A forms a bottomless square tubular component 22, but can also be cut off from the bottom surface of the bottomed component 22A of the core material 21 as shown in Fig. 6 = No. The substrate 3 is disposed on the side and is placed on the opposite side of the material 4. In addition, in the above-described embodiment, the members 22 and 22A are formed in a square tubular shape. However, in the present invention, as the shape of the members 22 and 22A, any shape such as a cylindrical shape or a hexagonal cylindrical shape may be applied. [Substrate] As the substrate 3 used in the present invention, generally used: Ps, AS, ABS, AES, PP, modified PP, PVC, pc, pMMA, psF, pEs, pp〇,

[PS, PAR, PEEK, PAI, PI, PEI, melamine resin, reinforced resin or other rigid plastic sheet or molded product, or foam board of the above hard plastic; or wood, plywood, Ply w〇〇d, Hard board (hard b〇ard), particle board, MDF, etc.; or aluminum, steel, titanium, etc., metal such as duraiumin, stainless steel, etc.; or other porous materials used in the present invention Shaped material of the material, etc. The substrate 3 is provided with the sound absorbing and sound absorbing properties or rigidity of the cushioning and sound absorbing member of the present invention. X

[Porous material] On one surface of the core material 2 of the present invention, as shown in the figure, a porous material 4 is formed. The material of the porous material 4 may, for example, be a polycrystalline fiber, a polyethylene fiber, a polyamide fiber, an acrylic fiber, a polyamine fiber, a polyvinyl chloride:) fiber, or a poly Synthetic fibers such as vinylidene chloride fiber and acetic acid cool fiber; natural fibers such as paper, kapok, coconut fiber, hemp fiber, bamboo fiber, and foreign fiber; glass fiber, carbon fiber, and Taoman fiber' asbestos fiber 319638 14 200916317 'Inorganic fiber; and 'flat fabric, non-woven fabric, felt, and the like, which are composed of one or two or more types of fibers obtained by defibrating a woven fabric of a fiber product using such fibers; Fiber aggregate; continuous foam polyurethane foam (including soft polyurethane foam, rigid polyurethane foam) 'polyethylene, polypropylene and other polyolefin foam, polychlorine = foam, polystyrene foam Body, melamine resin, urea resin = amine resin foam, epoxy resin foam, continuous cell structure such as a phenol resin foam composed of a monohydric phenol or a polyphenol [such as a phenolic compound] A well-known foam such as a sintered body of plastic or plastic particles. The ventilation resistance of the porous material 4 is set to 〇·5 to 5. 〇Pa . s/ m. The porous material 4 having the above-described range of ventilation resistance can impart good cushioning properties and sound absorbing properties to the present cushioning sound absorbing material 1. x . The above-mentioned ventilation resistance R (Pa·s/m) indicates the degree of ventilation of the air permeable material. The measurement of the ventilation resistance R is performed by a steady flow differential pressure measurement method. = As shown in Fig. 7, the test piece is placed in the air passage w of the cylinder, and the total force ρι in the air passage w on the starting point side of the figure is measured in a state of a constant ventilation V (in the direction of the arrow in the figure). The pressure difference at the end point of the arrow in the figure, and then the ventilation resistance R can be calculated according to the following formula.

, s / m per unit area is the air permeability c (m ventilation resistance can be by, for example, aeration test machine (made W) ---- ▲ - P2): pressure difference (pa), y ventilation (m /m2 · s), and the relationship between the ventilation resistance R (pa · s / /pa·s) and C = l / R.

319638 15 200916317 . Determination. The porous material 4 may contain a synthetic resin to the extent that the air permeability is not inhibited. As the synthetic resin, a melamine resin, an emulsion of a urine resin, an aqueous solution or the like, and a thermoplastic tree field are used. In the present invention, as the fiber of the porous material, for example, a mineral fiber; an aromatic fiber ( Aramid fiber (four), dimensional); wool (natural wool) and other animal hair fiber ^ polyamine fiber, even if not using the flame retardant described later, also fiber when the fire and fire resistance.缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 阻燃 阻燃 阻燃 阻燃 阻燃 阻燃 阻燃 阻燃 阻燃 阻燃 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 阻燃 阻燃 缓冲 缓冲 阻燃 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲 缓冲Flame retardant, acid vinegar resistance, amino acid flame retardant, etc. It is an anti-burning agent, a solid-resistance or a water-insoluble powdery solid. The porous material 4 has good resistance: water = shape. (IV) The porous material of the present invention has a coarse structure. In particular, it will be shun == to the inside and give the height of the resistance = the capsules covered by the flame retardant or urea, etc., :2:::Ou Lu's best flame retardant polymerization degree is 1〇 To 4〇' = 319638 16 200916317 The degree of polymerization of ammonium polyphosphate is poorly soluble or insoluble in water, Β & and will decompose at room temperature to produce a flame retardant gas, but the flame retardant gas is inclined, Order, A — The toxicity of wild animals is very low. The calculation formula 1 is calculated here, and the degree of polymerization η of the polyacid is referred to as the following. [Formula 1] mo 1 X Ρ η

Nmol — P mol Ear number, Nmol means 2, 3 calculated. Here, Pw means the number of moles of molybdenum contained in ammonium polyphosphate, and Pmol and Nmol are calculated by the following formula f: Formula IV content (% by mass) / 1 〇〇Γ mol --- - __ P atomic weight (30. 97) f Calculation formula 3] NN content (% by mass) / ι00 N atomic weight (14. 01) Analysis of p content is performed by, for example, 1 cp luminescence spectrometry The analysis is performed, for example, by the CHN calculation method. When the degree of polymerization is 10 or more, ammonium polyphosphate is hardly soluble in water. = If the degree of polymerization exceeds 40', the ammonium polyphosphate is dispersed in water or in the aqueous dispersion solution. 4 Because the viscosity of the dispersion is abnormally increased, it is difficult to uniformly coat or impregnate when coated or impregnated into the porous material. Or the amount of impregnation will be uneven 319638 200916317 evenly, the result will not be fully flame retardant. In the present invention, '4乍 is the above-mentioned powdery solid-state flame retardant enamel, and the above-mentioned polylinic acid and expanded graphite may be used at the same time. The expanded graphite used in the present invention is obtained by impregnating natural graphite with a mineral acid such as concentrated sulfuric acid, tartaric acid or shouting, and adding perchloric acid, perchlorate, permanganate or dichromic acid. The material obtained by treating an oxidizing agent such as a salt or hydrogen peroxide has a swelling start temperature of about . Come to. The expanded graphite has an expansion volume of about 30 to 300 ml/g and a particle size of about 3 to 3 mesh. The above-mentioned powdered solid such as ammonium sulfate and expansive stone ‘ink is flame-retardant! The powdery solid flame retardant may be mixed in a solution or emulsion of the synthetic resin, usually by impregnating or coating a synthetic resin solution or emulsion in the porous material or by mixing the synthetic tree material with a fiber towel. The mixing ratio is arbitrary, but the poly-ammonium is usually G. 5 to m% by mass with respect to the mixed fiber, and 5% to 5% by mass is added when the expanded graphite is used. When the synthetic resin is an aqueous solution, the water is first dissolved in the aqueous solution. The above water-soluble resin is, for example, sodium polyacrylate, polyacrylic acid, partially purified, polyvinyl alcohol (PVA), m-methyl cellulose (cmc), ground cellulose, ethyl cellulose, ethyl cellulose. Etc., it is also possible to use acid acrylate: 酉" and methacrylate and acrylic acid and / or mercapto propylene hydride ... or the micro-crosslinked copolymer of the copolymer, etc. Or the micro-crosslinked copolymer is usually provided in an emulsion state. In the aqueous solution of the resin, the viscosity-enhancing effect or dispersion effect of the above-mentioned aqueous solution tree is first added to disperse in the aqueous solution, ammonium citrate or The expanded graphite is not easily precipitated, thereby obtaining a uniform impregnation 319638 18 200916317 * liquid. Further, the aqueous resin can enhance the adhesion of the ammonium polyphosphate or expanded graphite to the fiber and effectively prevent the polyphosphate clock or the expanded graphite from being 'porous The water-soluble resin is usually used in the above aqueous solution to a degree of 2 to 2% by mass. The porous material is further added with the ammonium polyphosphate or the blackened solid resistance. The agent may be after impregnating the synthetic resin into the porous J material, in the solution or emulsion of the synthetic resin, or sodium polyacrylate, polyacetal vinegar partial alkali, polyvinyl alcohol (PVA), carboxymethyl An aqueous solution of cellulose (cmc), methyl cellulose, methyl cellulose, a water-soluble resin such as ethyl cellulose, or polyacrylic acid and/or methacrylic acid and acrylic acid and/or A Dispersing a powdery solid flame retardant such as ammonium polyacrylate or the expanded graphite in an emulsion of an acrylic acid-based copolymer or a micro-crosslinked copolymer such as the copolymer, and preparing a dispersion liquid, and The dispersion is coated by a human being immersed in the porous material. ί Disperse the (tetra) ammonium acid or the powdery solid flame retardant such as the expanded graphite in a synthetic resin emulsion or an aqueous solution by using a homogenizer, Ultrasonic emulsification device, etc. When using an ultrasonic emulsification device, the polyphosphoric acid or the fluorite black powdery solid flame retardant is uniformly dispersed in an emulsion or an aqueous solution. The expanded graphite is ultrasonicated. And micro-refinement An emulsion or water-soluble synthetic resin of the powdery solid flame retardant which is dispersed and refined in a uniform sentence; when impregnated in the porous material, the porous material is thick as described above, and the powdery solid resistance The flammable agent becomes permeable to the porous material 319638 19 200916317 *, and the flame retardancy of the porous material is improved. [Manufacture of Buffered Sound Absorbing Member]

I The buffer sound absorbing member 1' of the present invention is provided with a substrate 3 disposed on one side of the core material 2, and a porous material 4 on the other side. The bonding between the core material 2 and the substrate 3 or the porous material 4 is usually performed by using a screw or a clip, but an adhesive, a hot melt adhesive, or ultrasonic or high frequency bonding, heat welding, or the like may be used. The cushioning and sound absorbing member 1 of the present invention is generally disposed such that the porous material 4 is disposed toward a noise source such as an engine, and the substrate 3 can be placed on the reverse side of the town hole material 4 to be placed. [Examples] The present invention will be described by way of a detailed description. However, the invention is not limited to the embodiments shown below. [Sample for Example] [Production of Porous Material] ([Porous material A] 50 parts by mass of polyester fiber (denier: 2. 2 dtex, fiber length: 75 mm), 10 parts by mass of hollow polyester fiber ( The core-sheath structure polyester fiber (fineness: 4. 4 dtex, fiber length: 55 mm, sheath melting point: 丨5 〇. 〇) of fineness: 15, fiber length: 75 mni), 40 parts by mass of low-melting fiber The mixed fiber of the composition is defibrated into a network by a defibrating machine, and then needle-punched, and the thickness of the low-melting fiber in the mixed fiber is melted while being melted in a heating furnace of 18 01. A porous material A having a thickness of 5 mm, a unit area of 319638 20 200916317 4 and a weight of 150 〇g/m 2 is obtained. The ventilation resistance of the porous material A is 3.8 kPa·s/m. '[Porous material B] ' 1. The material B1 is a core-type structure using 6 G mass parts of polyester fiber (denier: 22, fiber length: 75 mm), 10 parts by mass of polypropylene fiber (denier: 1.5 dtex, fiber 30 parts by mass, low melting point fiber) Poly 酉 又.. 4dtex, fiber length: 55mm, sheath melting point: 15 〇. 〇:: into: mixed The fiber is combined with the above porous material to obtain a substrate β1 which is formed by a thickness of 15 and a basis weight of the porous sheet. 2 · The skin material Β 2 (1) is a non-woven fabric made of polyester fibers. It is made by needle punching, and the weight per unit area is 80g/m2) as the main material Β2α. (2) It will be composed of 30 mass parts of the first-order phenolic phenol-alkyl resorcinol-formaldehyde initial condensate (solid content: 50 mass) % aqueous solution), } part by mass of carbon black (solid content··30 mass% aqueous dispersion), 2 parts by mass of fluorine-based water-repellent/oil-removing agent (solid content: 2〇% by mass aqueous solution), 67-mass water (3) The above-mentioned main material β2α is impregnated and applied to the coating material β2々 by a roll coater so as to have a coating amount of 3% by mass, and is applied at a temperature of 150 C. After drying for 3 minutes, the surface material Β2 was obtained. 3. Lamination - On the surface of the above substrate Β1, a polyimide copolymer of 319638 21 200916317 heat-melt adhesive was dispersed at a coating amount of 5 g/m 2 (particle size: 2 ( () to 25_, $130 C). Thereafter, the surface material β2 is superposed on the surface of the substrate μ, and Heat roller (surface temperature: 18 〇. 基材 while the substrate β1 and the surface material β2 are connected to each other, and the thickness is adjusted to obtain a porous material B of a thickness of 1 Qmm. The ventilation resistance of the porous material B is 2.5. kPa·s/m [Porous material C] 1. Substrate ci (1) Use of 20 parts by mass of polyester fiber (denier: 4.4 dtex, fiber length: 60 mm), 70 parts by mass of carbon fiber (denier 2 dtex 'fiber length : 70mm), 1〇 part by mass of low-melting fiber core-sheath type structural polyester fiber (fineness: 4.4dtex, fiber length · 55mm, f-point melting point: 15 (rc), and the above-mentioned household shell A In the same manner, a main material C1 α composed of a fiber sheet having a thickness of ΙΟππη and a basis weight of 7 μg/m was obtained. (2) Will it be made up of 30 parts by mass? The first condensate of the basal brittle base _ _ _ _ road initial condensate (solid content: 50% by mass aqueous solution), 】 mass parts of carbon black (solid content · 30% by mass aqueous dispersion), 1 〇 mass of flame retardant Ammonium polyphosphate (particle size: 4〇 to 5〇, average degree of polymerization·n=30 degree of polymerization), 5 parts by volume of expanded M graphite (particle size: ^ mesh, expansion start temperature: 28〇t, expansion Volume: / g), 1 part by mass of sodium p-butyrate, 53.9 parts by mass of water is mixed with a homogenizer to produce a uniform coating of right 319638 22 200916317 material ci million. (3) The main material C1 α is dried at a temperature of 16 ° C by a roll coater so as to be coated at a temperature of 3 〇 % by mass, and dried for 10 minutes to obtain a porous sheet. The substrate is made of Cl. 2. Skin material C2 (1) A nonwoven fabric (manufactured by a spunbonding method and having a basis weight of 30 g/m2) made of a polyester fiber was used as the main material C2a. (2) 30 parts by mass of a resol phenol monoalkyl resorcinol-formaldehyde initial condensate (solid content: 50% by mass aqueous solution), bismuth mass black (solid content: 30% by mass aqueous dispersion), A mixed liquid composed of 2 parts by mass of a rat water/oil-repellent (solid content: 2% by mass aqueous solution) and 67 parts by mass of water was used as a coating material. (3) The coating material CM was impregnated and applied to the main material C2a so as to have a coating amount of 2% by mass, and the coating material CM was impregnated with a twist of 150 c for 2 minutes to obtain a skin material C2. . 3. Laminating, the surface of the substrate Π was superposed on the surface material C2, and hot-pressed at a temperature of 200 ° C for 60 seconds to obtain a porous material c having a thickness of 5 . The ventilation resistance of the porous material C is l.lkPa·s/m. [Porous material D] 1. Substrate D1 ❹ From 45 parts by mass of polyester fiber (denier: 44 hearts, fiber length and 5 mm), 5 mils of hollow poly fiber (denier: (5) plus, fiber 319638 23 200916317 length .75mm), l〇 mass of low-melting fiber (fineness: 4 · ~ fiber length: 55_' le = ^ composed of mixed fiber, in addition to the furnace temperature set to be the second choice, and the upper 4 porous The material A was operated in the same manner to obtain a substrate D1 of a porous sheet having a basis weight of 5 〇〇g/m 2 . 2. A skin material D2 (1) A non-woven fabric made of polyester fibers ( It is made of a needle punching method and has a basis weight of 100 g/m2 as the main material D2a. (2) 2 parts by mass of fluorine-based water-repellent/oil-repellent agent (solid content: 2% by mass aqueous solution), 20 parts by mass A mixed liquid composed of an acrylic emulsion (solid content: 4% by mass) and 78 parts by mass of water is used as a coating material β 0 (3). The above-mentioned main material D2a is applied by a roll coater so as to have a coating amount of 2% by mass. The coating material D2々 was applied by impregnation, and the nozzle coating was applied as a hot melt at a coating amount of i5 g/ni2 on one side of the main material D2 〇: The composition of the adhesive consisting of 20 parts by mass of the polyester copolymer (particle size: 20 to 30 # m, melting point: 120X: ), 〇. 5 parts by mass of the acrylate/acrylic copolymer resin, and 79.5 parts by mass of water The aqueous solution is then dried at a temperature of 1501: for 4 minutes to obtain a skin material D2. 3. The laminate is laminated on the substrate D1 in such a manner that the surface of the hot melt adhesive coating is contacted. The surface of the porous material d was made by hot pressing at 319638 24 200916317 for 40 seconds at a temperature of 150 ° C. The ventilation resistance of the porous material D was kPa 5 kPa · s / m. Porous material E] A mixed fiber sheet composed of 70 parts by mass of carbon fiber (denier: 12 dtex fiber length · 7 mm) and 3 parts by mass of polypropylene fiber (denier u dtex fiber length: 55 mm) at a temperature of 180 t: The material was subjected to hot press forming to obtain a porous material E having a basis weight of 8 〇〇g/m 2 and a thickness of 2 Å. [Manufacturing of core material] [Core A] Using polypropylene/polyethylene/talc a weight ratio of =70/1〇/2〇 to a thermoplastic sheet having a thickness of G.5_, which is formed by a usual vacuum The core material A of the shape shown in Fig. 2 was molded by the method. 2 The thermoplastic plastic sheet was not stretched in the transverse direction during vacuum forming. The size of the core material A (coffee) was vertical X horizontal X height = 40 x 40 x 15. The number of parts is 484 g/m2. The knife 1 is cut off from the bottom surface to form a bottomless square cylinder. [Core B] Olefin makes dilute polyamine / phenethyl hydrazine - hydrogenation polymerization, 5/4 〇 / The weight ratio of /5 is composed of the engineering plastic gold is 热塑性.5_ thermoplastic plastic sheet, and by the material β. The core of the shape shown in Fig. 2 is formed by a one-and-one-one method. When vacuum forming is performed, the thermoplastic plastic sheet is pulled in the lateral direction by 319638 25 200916317. The amount of stretching is set to l〇% of the original width. '" Material B size () is vertical X horizontal X height = 40x40x1 5. The number of components is 484 grids/m2. The component lattice is divided into a bottomless square cylinder except for the bottom surface. L heart material C j = sheet is used for the thickness of L1 with the talc-added polypropylene polymer / co-I layer on both sides of a three-layer sheet with a thickness of °·05_ thickness & (4) The core material C of the shape shown in Fig. 4 is formed by stretching into a true shape. -n does not pull the thermoplastic sheet to the horizontal direction. The size of the material C (_) is the vertical and horizontal height = 1. The number of parts is 1 089 cells/m2. [The core plate cutter dT grid is not cut off the bottom surface. And it has a bottomed square tube shape ίο质=2, plus 15% by mass of ammonium polyphosphate as a flame retardant material, and a thermoplastic plastic sheet having a thickness of 6.6 mm which is composed of a material and a crucible. The vacuum forming method is molded into a core material D. When vacuum forming, the thermoplastic poetry sheet is not hit in the lateral direction, and the size (D) of D is high in diameter X. The number of turns is 25 grid/in2 The knife rib is cut off from the bottom surface to form a bottomless cylindrical shape. [Manufacture of Buffered Sound Absorbing Member] 319638 26 200916317 , [The cushioning sound absorbing member is made of a substrate made of an iron plate having a thickness of G.2 mm, •,; A is processed into a predetermined shape and placed on the substrate; A, and then the porous material is superposed on the heart material A: the heart material is buffered and absorbing the sound absorbing member A. The Guardian uses a thousand solids to make the damper [buffering sound absorbing member B] Polypropylene made of 2 厚度 thick, plate. The above porous f#B, „based foundation and superimposed on the substrate 々 Processing into a predetermined shape, Er + 2 A porous sheet and then laminated to the core β, * with clamps such shock and sound absorbing member prepared Β. And [buffering sound absorbing member C] A polypropylene plate having a thickness of 3 coffee was prepared. The substrate C and the core material D formed by the above-mentioned porous 皙 r r r ( 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材The material C, and U 疋, the buffer sound absorbing member C is produced. [Buffering Sound Absorbing Member D], the porous material D and the upper side c each have a (four) 疋 shape of a component of the core material C, and the porous material D and m H 乍 are substrates, and are superposed on the core material C. The [buffer sound absorbing member E] is used to make the buffer sound absorbing member D. The above is used as a substrate. The porous material (four) and the core material D are bonded to the material plate 4, and the sound absorbing member is £. "Be only β' and fixed with a clip to make a buffer 319638 27 200916317 * [Sample for comparison example] [Porous material F] The weight is set to 20 2"::]:: The thickness is set to 2 mm, the unit face material F Bu, other ventilation operations are also carried out to make a porous material F.

[Porous material G] What is the porous material obtained in the above [Porous material F]? The two sheets are superimposed on the (five) 厗, r· 膘 (valley.40//m) in which the polypropylene is immersed in the middle, and then the hot pressing is performed at 18 (rc/dishness), and the thickness is 2_. The porous material G. The ventilation resistance of the porous material F is 65 kPa. [Manufacture of the cushioning sound absorbing member] [Buffering and sound absorbing member F] In addition to the use of the porous material F, the above [buffered sound absorbing member A] is replaced by the Γf material A. The buffer sound absorbing structure is produced by the operation of the other (fourth). [Buffering and sound absorbing member G] In addition to the porous material G used in the above, the buffering sound absorbing member is produced in the same manner as the porous material A in the buffering sound absorbing member. G. [Performance test] Five kinds of the above-described buffering sound absorbing member A to the sound absorbing and absorbing member £ of the embodiment, and the above-described cushioning and sound absorbing member F and the sound absorbing and absorbing member G of the comparative example were subjected to performance tests and evaluated. 曰319638 28 In the measurement of the sound absorption rate, the sample is placed in such a manner that the substrate side of the sound absorbing member is the lowermost layer, and the sample is placed in the test. And carry out the measurement. 5 formula 1 ^ results The graph of Fig. 8 shows the sound absorbing property of the member E. As a result, the buffering sound absorbing member A is excellent in both sound absorbing and sound absorbing. With respect to the buffer suction member A, the result is in the middle frequency band region (to 2500 Hz). The sound absorbing property is excellent. As a result, the sound absorbing property of the buffering member B is excellent in the sound absorption property in the middle frequency band region (to 25_Z), and the fuel absorption member b is excellent in the heat efficiency and even if the heartwood β is high in the south. In the five employees, the thermoplastic material sheet was stretched in the transverse direction, and as a result, the thickness of the molded product (core material) was not uniform, and the overall thickness was substantially uniform. The buffer sound absorbing member C' was obtained in the middle frequency band region. (10) to 4 2500 Hz) to the high frequency band region (3 〇〇〇 to 6 〇〇〇Ηζ) is excellent in sound absorbing property and good in flame retardancy. As a result, the sound absorbing member D is excellent in sound absorbing property particularly in the high frequency band region (3000 to 6000 Hz), and is light in weight and excellent in weight reduction. As a result, the sound absorbing member E was buffered, and as a result, the sound absorbing property in the band region (6 〇〇 to 2500 Hz) to the high band region (3 〇〇〇 to 6 Hz) was excellent, and the flame retardancy was good. Moreover, the rectifying effect of the substrate is excellent, and the rectifying effect is good at the same time of sound absorption. 319638 29 200916317, (d) The buffering sound absorbing member F of the (10) example, the band-specific area to the 25 〇 _ part of the specific frequency band shows the frequency-relevant = comparative example of the sound absorbing member G, and the sound absorbing performance of the junction area is low. 1 α head τ (industrial availability) The cushioning sound absorbing member of the present invention, a product-Γ士 m , and the cover 3 sound absorption effect is extremely excellent

Different, but there may be an upper cover for the engine of the car, such as an upper cover. i post this under cover^ [Simplified illustration] The f1 diagram shows a cross-sectional view of the buffered sound absorbing member. Figure 2 shows the formation of a bottomless map. Sectional view Figure 1. The oblique view of the core material of the question mark is shown to represent the core material forming the bottomless square cylindrical component. The figure shows the squint of the core material forming the bottomed rectangular tubular component. Fig. 6 of the cross section of the core material having a bottomed rectangular tubular member Fig. 7 is a cross-sectional view showing the ventilating resistor member in Fig. 7 showing other shapes. Fig. 8 is an explanatory diagram of the measurement principle of the second embodiment. Curve of test results ^ & Example and performance of buffered sound absorbing member of & example [Key element symbol description] 319638 30 1 Buffered sound absorbing member 2 core material 200916317 3 Substrate 4 Porous material 21 Thermoplastic plastic sheet 22 Bottomless Square cylindrical component 22A Bottom square cylindrical component h Height of the bottomless square cylindrical component PI Pressure of the starting point side of the ventilation path P2 of the end point side of the ventilation path Test piece V Ventilation volume W Ventilation path 31 319638

Claims (1)

200916317 X. Patent application scope: ϊ· A buffering sound absorbing member which is formed by a core material having a plurality of cylindrical component cells formed vertically and horizontally, and a substrate set on one side of the core material, on the other side of the core material The ventilating resistance of the porous material is 0.5 to 5. OkPa · s / m. 2. The cushioning sound absorbing member of claim i, wherein the core material of the heat = plastic is manufactured by vacuum-forming and/or pressure-forming the thermoplastic plastic sheet. 3. = The buffered sound absorbing member of the second application of the patent scope, wherein the thermoplastic sheet is stretched in the transverse direction before molding, when the plastic sheet is subjected to vacuum and/or pressure 'P ^ ^ 烕 type. The predetermined amount. Money 319638 32