JPH05318639A - Adiabatic acoustic material - Google Patents
Adiabatic acoustic materialInfo
- Publication number
- JPH05318639A JPH05318639A JP15755492A JP15755492A JPH05318639A JP H05318639 A JPH05318639 A JP H05318639A JP 15755492 A JP15755492 A JP 15755492A JP 15755492 A JP15755492 A JP 15755492A JP H05318639 A JPH05318639 A JP H05318639A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- glass
- fiber layer
- sound absorbing
- fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車のボンネットや
内装等に使用される断熱性、吸音性に優れた断熱吸音材
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating and sound absorbing material having excellent heat insulating properties and sound absorbing properties, which is used for automobile hoods and interiors.
【０００２】[0002]
【従来の技術】従来、自動車のボンネットの裏側や内装
部分には、エンジン部分から発生する熱の断熱及び外部
からの熱を断熱することと、騒音等の軽減を図ることを
目的に、ガラス短繊維にフェノール樹脂を付着させた生
ウールを準備し、これをボンネットの裏側や内装の形状
に合わせて加圧成形した、断熱吸音部と補強リブとを有
する断熱吸音材が使用されている。2. Description of the Related Art Conventionally, a glass bonnet has been used on the back side and interior of a vehicle hood for the purpose of insulating heat generated from the engine and heat from the outside and reducing noise. An adiabatic sound absorbing material having an adiabatic sound absorbing portion and a reinforcing rib is used, which is prepared by preparing raw wool in which a phenol resin is attached to fibers, and press-molding the wool according to the shape of the back side of the bonnet or the interior.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、ガラス
短繊維を使用していることから、取扱い時に繊維が折れ
て、皮膚や衣服に付着し、チクチクするという欠点があ
った。そこで、バインダー樹脂としてフェノール樹脂を
事前に付着させたロックウールの生ウールを使用すると
いう試みもなされた。しかしながら、同等の厚さのガラ
ス短繊維と比較した場合には、ロックウールは腰がなく
繊維が弱いことから、熱プレス等の加圧成形をした際に
所定の強度を発現できないことや、ロックウールの製造
時に発生する粒状物の存在により、同等の重量のガラス
短繊維と比較して断熱性、吸音率が悪いことから製品化
されていない。また、昨今の自動車の一層の軽量化対策
に対応できる、より薄くて軽量なものの提供が望まれて
いる。本発明の目的は、薄くて高強度であり、従来品と
同等またはそれ以上の断熱性、吸音性を有し、しかも、
チクチクしない断熱吸音材を提供することにある。However, since the short glass fibers are used, there is a drawback that the fibers are broken during handling and adhere to the skin or clothes to cause tingling. Therefore, an attempt was also made to use rock wool raw wool to which a phenol resin was previously attached as a binder resin. However, when compared with short glass fibers of equivalent thickness, rock wool is not stiff and the fibers are weak, so that it is not possible to develop a predetermined strength when pressure molding such as heat pressing, and Due to the presence of particulate matter generated during the production of wool, it has not been commercialized because it has poor heat insulation and sound absorption compared to glass short fibers of equivalent weight. Further, it is desired to provide a thinner and lighter vehicle which can cope with the recent measures for further weight reduction of automobiles. The object of the present invention is thin and high-strength, and has the same or higher heat insulation and sound absorption as conventional products, and
It is to provide a heat-insulating sound absorbing material that does not tingle.
【０００４】[0004]
【課題を解決するための手段】本発明者は上記した欠点
を解消するため鋭意検討を行った結果、無機質繊維を脱
粒子した後、柔軟性バインダーで結合することに気付き
本発明を完成した。すなわち、本発明は、繊維径７μｍ
以下の無機質繊維と繊維状バインダー樹脂とを解繊・混
合と同時に脱粒子して得た繊維層の上下面にガラスクロ
ス又はガラス不織布を積層した後、加熱して一体化した
ことを特徴とする断熱吸音材である。As a result of intensive studies to solve the above-mentioned drawbacks, the present inventor has found that the inorganic fibers are departicled and then bound with a flexible binder, and the present invention has been completed. That is, the present invention has a fiber diameter of 7 μm.
The following inorganic fibers and fibrous binder resin are defibrated / mixed and simultaneously pulverized to obtain a fiber layer, and a glass cloth or glass nonwoven fabric is laminated on the upper and lower surfaces of the fiber layer, and then heated to be integrated. It is an adiabatic sound absorbing material.
【０００５】以下、本発明を詳細に説明する。本発明に
使用する無機質繊維としては、繊維径が７μｍ以下のも
のが使用され、ロックウール、セラミックファイバー等
の無機質繊維を挙げることができる。繊維径が７μｍを
越えると取り扱い時にチクチクし、また単位体積中に存
在する繊維の本数が減少して断熱性、吸音性が低下す
る。ロックウール、セラミックファイバーをそれぞれ単
独に使用することもできるが、これらにガラスウールを
配合することによって、繊維層の強度を向上することが
できる。その場合、チクチク度合い、断熱性、吸音性の
面から５０重量％以下であることが好ましい。繊維状バ
インダー樹脂としては、加熱によって接着性を発現する
塩ビ系、酢ビ系、アクリル系、スチレン系、ポリオレフ
ィン系、ポリエステル系、ナイロン系等の熱可塑性樹脂
等の繊維状体が挙げられ、より好ましくは、軟化温度の
異なる複数の熱可塑性樹脂で構成されたクラッド／コア
タイプの熱融着繊維である。The present invention will be described in detail below. As the inorganic fibers used in the present invention, those having a fiber diameter of 7 μm or less are used, and examples thereof include rock wool and ceramic fibers. If the fiber diameter exceeds 7 μm, it will be tingling during handling, and the number of fibers present in a unit volume will decrease, resulting in poor heat insulation and sound absorption. Rock wool and ceramic fiber may be used alone, but by adding glass wool to them, the strength of the fiber layer can be improved. In that case, it is preferably 50% by weight or less in terms of tingling, heat insulation and sound absorption. Examples of the fibrous binder resin include a fibrous material such as a vinyl chloride resin, a vinyl acetate resin, an acrylic resin, a styrene resin, a polyolefin resin, a polyester resin, a nylon resin, or the like that exhibits adhesiveness by heating. A clad / core type heat-bonding fiber composed of a plurality of thermoplastic resins having different softening temperatures is preferable.
【０００６】これらの繊維を用いて繊維層とする方法と
しては、無機質繊維と繊維状バインダー樹脂とを公知の
解繊装置によって、解繊、混合と同時に脱粒子した後、
加熱ボンディングさせることなく、所定の厚さのシート
状又はフェルト状に形成したものが使用される。また、
湿式抄造法を用いてもよい。無機質繊維をシート状或い
はマット状に形成した後、ハンドリング強度を向上させ
るために必要に応じてニードリング処理を行うことがで
きる。解繊、混合と同時に行う脱粒子工程では、原綿に
含まれる全粒子分の重量の少なくとも30％以上、より好
ましくは45％以上の脱粒子を行うことが必要であり、脱
粒子率が30％未満では、最終製品の吸音率、単位重量当
たりの強度が低下する。As a method for forming a fiber layer using these fibers, inorganic fibers and a fibrous binder resin are defibrated and mixed with a known defibrating device, and then deflated.
A sheet-shaped or felt-shaped member having a predetermined thickness is used without heat bonding. Also,
Wet papermaking methods may also be used. After forming the inorganic fiber into a sheet shape or a mat shape, a needling treatment can be performed if necessary in order to improve the handling strength. In the defibration step that is performed at the same time as the defibration and mixing, it is necessary to remove at least 30% or more, more preferably 45% or more of the weight of all the particles contained in the raw cotton, and the removal rate is 30%. If it is less than 100%, the sound absorption coefficient and the strength per unit weight of the final product are lowered.
【０００７】本発明で用いる ガラスクロス、ガラス不
織布としては公知のものを使用することができる。この
ガラスクロス、ガラス不織布は、長繊維からなるので、
チクチクすることはないが、ポリエステル樹脂等によっ
て、サイジング処理を行ったものであることがより好ま
しい。ガラスクロス、ガラス不織布の厚さ、及び質量
は、使用するガラス繊維の材質、柔軟性によって適宜選
択することができるが、厚さ０．０３〜０．５ｍｍ、質
量５０〜３００ｇ／ｍ2 であることが好ましい。無機質
繊維層とこのガラスクロス又はガラス不織布とを積層
後、加熱・加圧して断熱吸音材とするが、この際に使用
する接着剤としては、加熱によって接着効果を発揮する
熱硬化性樹脂、熱可塑性樹脂が使用できる。その場合、
使用する接着剤の接着温度は、無機質繊維層に含まれる
繊維状バインダー樹脂の接着温度以下であることが好ま
しく、より好ましくはほぼ同じ温度範囲のものである。
熱硬化性樹脂としては、公知のフェノール樹脂、尿素樹
脂等が使用できる。熱可塑性樹脂としては、塩ビ系、酢
ビ系、アクリル系、スチレン系、ポリオレフィン系、ポ
リエステル系、ナイロン系、合成ゴム系等が使用でき
る。しかしながら、熱プレス等の加熱成型処理によっ
て、使用箇所の形状に合わせた補強リブ部、断熱吸音部
を構成することから、この際に接着硬化するものであれ
ばよく、しかも、無機質繊維の内部には繊維状バインダ
ー樹脂が混合してあることから、無機質繊維とガラスク
ロス又はガラス不織布との接着には無機質繊維層内部に
浸透し難い粉末状の接着剤を使用することがこのまし
い。成型時の加熱温度、時間、圧力は使用した繊維状バ
インダー樹脂に合わせて設定すればよい。成型後の本発
明による断熱吸音材の断熱吸音部の繊維層の密度は３０
〜３００ｋｇ／ｍ3 、好ましくは６０〜２５０ｋｇ／ｍ
3 、繊維層の厚さとしては１〜３０ｍｍ、好ましくは２
〜２０ｍｍであり、幅、長さは任意でよい。この繊維層
は、性能に寄与しない粒子分が除かれ、内部に多数の空
隙を有していることから、断熱性、吸音性が高く、しか
も、無機質繊維と繊維状バインダー樹脂が互いにからみ
あって構成されていることから、引張強度、圧縮強度が
強い。As the glass cloth and the glass non-woven fabric used in the present invention, known materials can be used. Since this glass cloth and glass non-woven fabric consist of long fibers,
Although it does not tingle, it is more preferable that it is subjected to a sizing treatment with a polyester resin or the like. The thickness and mass of the glass cloth and the glass nonwoven fabric can be appropriately selected depending on the material and flexibility of the glass fiber used, but the thickness is 0.03 to 0.5 mm and the mass is 50 to 300 g / m 2 . Preferably. After laminating the inorganic fiber layer and this glass cloth or glass non-woven fabric, it is heated and pressed to form a heat-insulating sound absorbing material.The adhesive used at this time is a thermosetting resin that exerts an adhesive effect by heating, a heat A plastic resin can be used. In that case,
The adhesive temperature of the adhesive used is preferably equal to or lower than the adhesive temperature of the fibrous binder resin contained in the inorganic fiber layer, more preferably in the same temperature range.
As the thermosetting resin, known phenol resins, urea resins and the like can be used. As the thermoplastic resin, vinyl chloride type, vinyl acetate type, acrylic type, styrene type, polyolefin type, polyester type, nylon type, synthetic rubber type and the like can be used. However, since the reinforcing rib portion and the heat insulating and sound absorbing portion are formed in accordance with the shape of the place of use by the heat molding treatment such as hot pressing, it is sufficient as long as it is adhesive and hardened at this time, and moreover, the inside of the inorganic fiber is Since the fibrous binder resin is mixed, it is preferable to use a powdery adhesive which is difficult to penetrate into the inorganic fiber layer for bonding the inorganic fiber and the glass cloth or the glass nonwoven fabric. The heating temperature, time, and pressure during molding may be set according to the fibrous binder resin used. The density of the fiber layer of the heat insulating and sound absorbing portion of the heat insulating and sound absorbing material according to the present invention after molding is 30.
~ 300 kg / m 3 , preferably 60-250 kg / m
3 , the thickness of the fiber layer is 1 to 30 mm, preferably 2
It is about 20 mm, and the width and the length may be arbitrary. This fiber layer has a large number of voids inside, excluding particles that do not contribute to performance, so it has high heat insulation and sound absorption, and is composed of inorganic fibers and fibrous binder resin entangled with each other. Therefore, the tensile strength and the compressive strength are strong.
【０００８】このようにして得た断熱吸音材を自動車の
ボンネット裏面や内装部分に公知の接着剤によって貼着
するか、係止することによって、断熱吸音効果を発揮す
ることになる。ここまでは自動車について説明したが、
本発明の断熱吸音材は、薄くて柔軟性があることから、
家庭電化製品、空調機、ヒーターまわり等々にも使用で
きることはいうまでもない。The adiabatic sound absorbing material thus obtained exhibits the adiabatic sound absorbing effect by adhering or locking the adiabatic sound absorbing material to the back surface or interior portion of the automobile with a known adhesive. So far, we have explained about automobiles,
Since the heat insulating sound absorbing material of the present invention is thin and flexible,
It goes without saying that it can also be used in home appliances, air conditioners, heaters, etc.
【０００９】[0009]
【作用】本発明では、ガラス短繊維に代えて無機質繊維
を使用し、この無機質繊維をガラスクロス又はガラス不
織布等の長繊維で被覆したことにより、加工時のガラス
短繊維の微粉によるチクチクとした不快感が解消され
る。また、本発明で使用する無機質繊維は、繊維状バイ
ンダー樹脂の使用と、これらの繊維の解繊、混合と同時
に無機質繊維に内包する粒子分を除去することにより、
弾力性、柔軟性に富む高強度の成型品を得ることができ
ることから、従来のガラス短繊維製のものより重量当た
りの性能が向上する。さらには、本発明で使用する無機
質繊維の繊維径がガラス短繊維の繊維径より細いことに
も起因している。In the present invention, an inorganic fiber is used in place of the glass short fiber, and the inorganic fiber is covered with a long fiber such as a glass cloth or a glass non-woven fabric to give a tingling effect of fine glass short fiber powder during processing. Discomfort is eliminated. Further, the inorganic fibers used in the present invention, the use of a fibrous binder resin, defibration of these fibers, by removing the particles contained in the inorganic fibers at the same time as mixing,
Since a molded product having high elasticity and flexibility and high strength can be obtained, the performance per weight is improved as compared with the conventional product made of short glass fiber. Further, it is caused by the fact that the fiber diameter of the inorganic fiber used in the present invention is smaller than the fiber diameter of the glass short fiber.
【００１０】[0010]
実施例１ ロックウール（エスファイバー、新日鐵化学（株）製）
を無機質繊維の主原料とし、これに繊維状バインダー樹
脂として、融点の異なるポリエステル系樹脂を用いた芯
鞘タイプの熱融着性繊維（ベルコンビ、鐘紡（株）製）
１０重量％を配合した。次いで、公知の無機質繊維の解
繊装置を使用して解繊・混合と同時に全粒子分の約５０
重量％を脱粒子した。そして、シート状に配綿した後に
ニードリングし、密度９０ｋｇ／ｍ3 、厚さ約２０ｍｍ
の繊維層を得た。この繊維層の７０℃の熱伝導率はＪＩ
Ｓ Ａ−１４１２の測定方法で０．０３３５Ｋｃａｌ／
ｍｈ℃であった。次いで、接着剤として市販の粉末状フ
ェノール樹脂を繊維層上に２５ｇ／ｍ2散布した後、市
販の厚さ０．１６ｍｍ、質量１５５ｇ／ｍ2 のガラスク
ロスを繊維層の上に施した。同様にして繊維層の下面側
にも同じガラスクロスを施した。ここで得たガラスクロ
ス−繊維層−ガラスクロスを、温度１６０℃、圧力約
０．５ｋｇ／ｍ2 の通常の加熱プレスをおこなって、補
強リブ部（厚さ約５ｍｍ）と断熱吸音部（厚さ約１５ｍ
ｍ）を形成した。この断熱吸音材の断熱吸音部の垂直入
射の吸音率（Ｎ．Ｒ．Ｃ）をＪＩＳ Ａ−１４０５に準
じて測定した。その結果を表１に示す。 比較例１ 実施例と同様の形状の市販の厚さ１５ｍｍのガラス短繊
維からなる断熱吸音材の吸音特性を実施例１同様にＪＩ
Ｓ Ａ−１４０５に準じて測定した。その結果を表１に
示す。Example 1 Rock wool (S-fiber, manufactured by Nippon Steel Chemical Co., Ltd.)
Is a main raw material for inorganic fibers, and a core-sheath type heat-fusible fiber (Belle Combi, manufactured by Kanebo Co., Ltd.) that uses polyester resins with different melting points as fibrous binder resins.
10 wt% was compounded. Then, using a known defibrating device for inorganic fibers, about 50
Weight percent was departicled. Then, the cotton is distributed in a sheet shape and then needling, the density is 90 kg / m 3 , and the thickness is about 20 mm.
A fiber layer of The thermal conductivity of this fiber layer at 70 ° C is JI
The measurement method of SA-1412 is 0.0335 Kcal /
It was mh ° C. Next, 25 g / m 2 of a commercially available powdered phenol resin was sprayed on the fiber layer as an adhesive, and then a commercially available glass cloth having a thickness of 0.16 mm and a mass of 155 g / m 2 was applied on the fiber layer. Similarly, the same glass cloth was applied to the lower surface side of the fiber layer. The glass cloth-fiber layer-glass cloth obtained here was subjected to a normal heating press at a temperature of 160 ° C. and a pressure of about 0.5 kg / m 2 to obtain a reinforcing rib portion (thickness of about 5 mm) and a heat insulating sound absorbing portion (thickness). About 15m
m) was formed. The sound absorption coefficient (NRC) at the normal incidence of the heat insulating and sound absorbing portion of the heat insulating and sound absorbing material was measured according to JIS A-1405. The results are shown in Table 1. Comparative Example 1 Similar to Example 1, the sound absorption characteristics of a commercially available heat-insulating sound absorbing material made of short glass fiber having a thickness of 15 mm and having the same shape as that of Example 1 was measured by JI.
It measured according to SA-1405. The results are shown in Table 1.
【表１】 [Table 1]
【００１１】[0011]
【発明の効果】本発明は、繊維径７μｍ以下の無機質繊
維と繊維状バインダー樹脂とを解繊、混合と同時に脱粒
子して得た繊維層の上下面にガラスクロス又はガラス不
織布を接着した断熱吸音材であるから、薄くて柔軟性が
あり、しかも、断熱性、吸音性が従来の市販品と比して
約１６０％向上するという顕著な効果がある。INDUSTRIAL APPLICABILITY The present invention is a heat insulation in which a glass cloth or a glass non-woven fabric is adhered to the upper and lower surfaces of a fiber layer obtained by defibrating inorganic fibers having a fiber diameter of 7 μm or less and a fibrous binder resin and simultaneously removing particles. Since it is a sound absorbing material, it is thin and flexible, and has a remarkable effect that its heat insulating property and sound absorbing property are improved by about 160% as compared with the conventional commercial products.
Claims (1)
バインダー樹脂とを解繊、混合と同時に脱粒子して得た
繊維層の上下面にガラスクロス又はガラス不織布を積層
した後、加熱して一体化したことを特徴とする断熱吸音
材。1. An inorganic fiber having a fiber diameter of 7 μm or less and a fibrous binder resin are defibrated, mixed and deflated at the same time, and a glass cloth or a glass nonwoven fabric is laminated on the upper and lower surfaces of the fiber layer and then heated. An adiabatic sound absorbing material characterized by being integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15755492A JPH05318639A (en) | 1992-05-25 | 1992-05-25 | Adiabatic acoustic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15755492A JPH05318639A (en) | 1992-05-25 | 1992-05-25 | Adiabatic acoustic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05318639A true JPH05318639A (en) | 1993-12-03 |
Family
ID=15652226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15755492A Pending JPH05318639A (en) | 1992-05-25 | 1992-05-25 | Adiabatic acoustic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05318639A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193370A (en) * | 1994-11-15 | 1996-07-30 | Asahi Fiber Glass Co Ltd | Heat-insulating and sound-absorbing of inorganic fiber material for blowing |
| JP2002283486A (en) * | 2001-03-27 | 2002-10-03 | Shinnikka Rock Wool Kk | Inorganic fiber sheet and manufacturing method thereof |
| JP2002287767A (en) * | 2001-03-23 | 2002-10-04 | Shinnikka Rock Wool Kk | Acoustic material for vehicle and method of manufacturing the same |
| JP2004299530A (en) * | 2003-03-31 | 2004-10-28 | Nichias Corp | Sound-absorption and heat insulation material molded body for automobile |
| JP2005088706A (en) * | 2003-09-16 | 2005-04-07 | Kasai Kogyo Co Ltd | Sound insulating material for vehicle |
| CN109789665A (en) * | 2016-09-16 | 2019-05-21 | 泽菲罗斯有限公司 | Device for heat and sound absorption |
-
1992
- 1992-05-25 JP JP15755492A patent/JPH05318639A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193370A (en) * | 1994-11-15 | 1996-07-30 | Asahi Fiber Glass Co Ltd | Heat-insulating and sound-absorbing of inorganic fiber material for blowing |
| JP2002287767A (en) * | 2001-03-23 | 2002-10-04 | Shinnikka Rock Wool Kk | Acoustic material for vehicle and method of manufacturing the same |
| JP2002283486A (en) * | 2001-03-27 | 2002-10-03 | Shinnikka Rock Wool Kk | Inorganic fiber sheet and manufacturing method thereof |
| JP2004299530A (en) * | 2003-03-31 | 2004-10-28 | Nichias Corp | Sound-absorption and heat insulation material molded body for automobile |
| JP2005088706A (en) * | 2003-09-16 | 2005-04-07 | Kasai Kogyo Co Ltd | Sound insulating material for vehicle |
| CN109789665A (en) * | 2016-09-16 | 2019-05-21 | 泽菲罗斯有限公司 | Device for heat and sound absorption |
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