JPH0460426B2 - - Google Patents
Info
- Publication number
- JPH0460426B2 JPH0460426B2 JP61312779A JP31277986A JPH0460426B2 JP H0460426 B2 JPH0460426 B2 JP H0460426B2 JP 61312779 A JP61312779 A JP 61312779A JP 31277986 A JP31277986 A JP 31277986A JP H0460426 B2 JPH0460426 B2 JP H0460426B2
- Authority
- JP
- Japan
- Prior art keywords
- mixture
- urethane prepolymer
- mold
- layer
- polyurethane foam
- 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.)
- Expired - Lifetime
Links
Landscapes
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は例えば自動車の床に敷設される制振吸
音材の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a vibration damping and sound absorbing material to be laid on the floor of an automobile, for example.
自動車の床にはポリウレタン発泡体チツプとウ
レタンプレポリマーとの混合物を型内に充填し、
蒸気加熱することによつて該ウレタンポリマーを
硬化させて得られるチツプ成形体が敷設される場
合がある。
For the car floor, a mixture of polyurethane foam chips and urethane prepolymer is filled into a mold.
A chip molded body obtained by curing the urethane polymer by steam heating may be laid.
しかしながら上記チツプ成形体は殆んど弾性殆
挙動を示すので吸音性は期待出来るが、自動車の
エンジンからの振動や走行中の振動を減衰させる
制振性は期待出来ない。
However, since the above-mentioned chip molded body exhibits almost elastic behavior, it can be expected to have sound absorbing properties, but it cannot be expected to have damping properties that dampen vibrations from an automobile engine or vibrations during driving.
本発明は上記従来の問題点を解決する手段とし
て、ポリウレタン発泡体チツプとウレタンプレポ
リマーとの混合物の層と、ポリウレタン発泡体チ
ツプとアスフアルトとウレタンプレポリマーとの
混合物の層とを積層構造を形成するように型内に
充填し、蒸気加熱することによつて該ウレタンプ
レポリマーを硬化させることによつて両層を一体
化させることを特徴とする制振吸音材の製造方法
を提供するものである。
As a means to solve the above-mentioned conventional problems, the present invention forms a laminated structure of a layer of a mixture of polyurethane foam chips and a urethane prepolymer, and a layer of a mixture of polyurethane foam chips, asphalt, and a urethane prepolymer. The present invention provides a method for producing a vibration damping and sound absorbing material, characterized in that both layers are integrated by filling the urethane prepolymer into a mold and heating it with steam to cure the urethane prepolymer. be.
本発明においてはポリウレタン発泡体チツプが
用いられが、該チツプには更に繊維屑、プラスチ
ツク屑等が混合されてよい。 In the present invention, polyurethane foam chips are used, but the chips may be further mixed with fiber waste, plastic waste, etc.
本発明に用いられるウレタンプレポリマーとは
トルエンジイソシアナート、パラフエニレンジイ
ソシアナート、ヘキサメチレンジイソシアナー
ト、ｍ−フエニレンジイソシアナート等のポリイ
ソシアナートと、ポリエステル、ポリ（オキシプ
ロピレンエーテル）ポリオール、ポリ（オキシエ
チレン−プロピレンエーテル）ポリオール等のポ
リオールとの反応物で末端にイソシアナート基を
有するものである。該ウレタンプレポリマーは
100％あるいはメチレンクロライド、メチルエチ
ルケトン、トルオール等の有機溶剤溶液として提
供される。 The urethane prepolymer used in the present invention is a polyisocyanate such as toluene diisocyanate, paraphenylene diisocyanate, hexamethylene diisocyanate, m-phenylene diisocyanate, polyester, poly(oxypropylene ether) polyol, etc. It is a reaction product with a polyol such as poly(oxyethylene-propylene ether) polyol, and has an isocyanate group at the end. The urethane prepolymer is
It is available 100% or as a solution in an organic solvent such as methylene chloride, methyl ethyl ketone, or toluene.
上記ポリウレタン発泡体チツプとウレタンプレ
ポリマーとの混合比率は一般に重量比で90：10〜
50：50である。 The mixing ratio of the above polyurethane foam chips and urethane prepolymer is generally 90:10 to 90:10 by weight.
It's 50:50.
更に上記ポリウレタン発泡体チツプとウレタン
プレポリマーとの混合物にはアスフアルトが添加
される。該アスフアルトの添加量は一般にチツプ
とウレタンプレポリマーとの混合物とアスフアル
トとの重量比が90：10〜30：70程度になるように
される。 Additionally, asphalt is added to the mixture of polyurethane foam chips and urethane prepolymer. The amount of asphalt added is generally such that the weight ratio of the mixture of chips and urethane prepolymer to asphalt is about 90:10 to 30:70.
上記ポリウレタン発泡体チツプとウレタンプレ
ポリマーとの混合物（混合物Ａとする）および上
記ポリウレタン発泡体チツプとアスフアルトとウ
レタンプレポリマーとの混合物（混合物Ｂとす
る）とは夫々層状にして積層構造を形成するよう
に所定形状の成形型内に充填し、該型内に蒸気を
注入して混合物Ａおよび混合物Ｂに該蒸気を接触
させる、このようにして混合物Ａ、Ｂ中に含まれ
るウレタンプレポリマーが蒸気に接触し加熱され
ることによつて尿素結合、更にビユレツトを生成
して高分子かつ三次元化してチツプを結着する。
このようにして混合物Ａからなる吸音層と、混合
物Ｂからなる制振層とが一体化された成形物を得
る。 The mixture of the polyurethane foam chips and urethane prepolymer (referred to as mixture A) and the mixture of the polyurethane foam chips, asphalt, and urethane prepolymer (referred to as mixture B) are each layered to form a laminated structure. The urethane prepolymers contained in mixtures A and B are filled into a mold with a predetermined shape, and steam is injected into the mold to bring the steam into contact with mixture A and mixture B. In this way, the urethane prepolymer contained in mixtures A and B is By contacting with and heating, urea bonds are formed, and a binder is formed to form a polymer and three-dimensional material, which binds the chip.
In this way, a molded product in which the sound absorbing layer made of mixture A and the vibration damping layer made of mixture B are integrated is obtained.
したがつて本発明においては吸音層と制振層と
が一段の工程で一体化されて得られるから、製造
方法は極めて簡単でしかも吸音層と制振層とを接
着するための接着材等も不要であり、吸音層その
弾性と含有する空気とにより優れた吸音効果を有
し、制振層は含有するアスフアルトの粘性による
粘弾性を示し、自動車のエンジンからの振動や走
行中の振動に対して良好な減衰効果、即ち制振効
果を有する。
Therefore, in the present invention, since the sound absorbing layer and the damping layer are integrated in one step, the manufacturing method is extremely simple, and the adhesive material for bonding the sound absorbing layer and the damping layer is not required. The sound absorption layer has an excellent sound absorption effect due to its elasticity and the air it contains, and the vibration damping layer exhibits viscoelasticity due to the viscosity of the asphalt it contains, and is effective against vibrations from the car engine and vibrations during driving. It has a good damping effect, that is, a vibration damping effect.
〔実施例〕
本発明の一実施例を第１図および第２図に示
す。図において、自動車の床敷用の成形型１は所
定形状の多孔底板２Ａを有する型枠２と、該型枠
２に挿入される上型３とからなり、該型枠２の多
孔底板２Ａの下方には蒸気ノズル４が挿着され
る。[Example] An example of the present invention is shown in FIGS. 1 and 2. In the figure, a mold 1 for automobile flooring consists of a mold 2 having a perforated bottom plate 2A of a predetermined shape, and an upper mold 3 inserted into the mold 2. A steam nozzle 4 is inserted below.
上記成形型１の底板３Ａ上に下記の組成の混合
物Ｂを層状に敷き、更にその上から下記の組成の
混合物Ａを層状に敷く。 A mixture B having the composition shown below is spread in a layer on the bottom plate 3A of the mold 1, and then a mixture A having the composition shown below is spread in a layer over it.
混合物Ａ
ポリウレタン発泡体チツプ 50重量部
繊維屑 15重量部
プラスチツク屑 ５重量部
ウレタンプレポリマー 30重量部
混合物Ｂ
混合物Ａ 65重量部
アスフアルト 35重量部
混合物Ａの敷設量は1500ｇ／m2、混合物Ｂの敷
設量は1000ｇ／m2とする。Mixture A Polyurethane foam chips 50 parts by weight Fiber waste 15 parts by weight Plastic waste 5 parts by weight Urethane prepolymer 30 parts by weight Mixture B Mixture A 65 parts by weight Asphalt 35 parts by weight The laying amount of Mixture A was 1500 g/m 2 , and that of Mixture B The laying amount is 1000g/ m2 .
混合物Ａ、Ｂを夫々層状に型内に敷設して積層
構造を形成した後、蒸気ノズル４から水蒸気を噴
出して混合物Ａ、Ｂに接触させ加熱する。このよ
うにして混合物Ａ、Ｂ中に含有されるウレタンプ
レポリマーは高分子化かつ三次元化することによ
り硬化してチツプを結着しかつ混合物Ａ、Ｂの層
を一体化する。得られた床敷５は型内から取出
す。第２図に示すように該床敷５は混合物Ａに由
来する吸音層５Ａと混合物Ｂに由来する制振層５
Ｂとからなる。 After the mixtures A and B are laid in layers in a mold to form a laminated structure, water vapor is ejected from the steam nozzle 4 and brought into contact with the mixtures A and B to heat them. In this way, the urethane prepolymers contained in Mixtures A and B become polymeric and three-dimensional, thereby curing, bonding the chips together, and integrating the layers of Mixtures A and B. The obtained bedding 5 is taken out from the mold. As shown in FIG. 2, the bedding 5 has a sound absorbing layer 5A derived from mixture A and a damping layer 5 derived from mixture B.
It consists of B.
第１図および第２図は本発明の一実施例を示す
ものであり、第１図は成形説明図、第２図は得ら
れた床敷の斜視図である。
図中、１……成形型、５……床敷、５Ａ……吸
音層、５Ｂ……制振音。
FIGS. 1 and 2 show one embodiment of the present invention, with FIG. 1 being an explanatory view of forming, and FIG. 2 being a perspective view of the obtained bedding. In the figure, 1...molding mold, 5...bedding, 5A...sound absorbing layer, 5B...vibration damping sound.
Claims (1)
リマーとの混合物の層と、ポリウレタン発泡体チ
ツプとアスフアルトとウレタンプレポリマーとの
混合物の層とを積層構造を形成するように型内に
充填し、蒸気加熱することによつて該ウレタンプ
レポリマーを硬化させることによつて両層を一体
化させることを特徴とする制振吸音材の製造方
法。1 Filling a mold with a layer of a mixture of polyurethane foam chips and a urethane prepolymer and a layer of a mixture of polyurethane foam chips, asphalt, and a urethane prepolymer to form a laminated structure, and heating with steam. A method for producing a vibration-damping and sound-absorbing material, characterized in that both layers are integrated by curing the urethane prepolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61312779A JPS63168336A (en) | 1986-12-29 | 1986-12-29 | Manufacture of vibration damping and sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61312779A JPS63168336A (en) | 1986-12-29 | 1986-12-29 | Manufacture of vibration damping and sound absorbing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63168336A JPS63168336A (en) | 1988-07-12 |
| JPH0460426B2 true JPH0460426B2 (en) | 1992-09-28 |
Family
ID=18033303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61312779A Granted JPS63168336A (en) | 1986-12-29 | 1986-12-29 | Manufacture of vibration damping and sound absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63168336A (en) |
-
1986
- 1986-12-29 JP JP61312779A patent/JPS63168336A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63168336A (en) | 1988-07-12 |
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