JPH0768695A - Steel plate reinforcement sheet - Google Patents
Steel plate reinforcement sheetInfo
- Publication number
- JPH0768695A JPH0768695A JP23718793A JP23718793A JPH0768695A JP H0768695 A JPH0768695 A JP H0768695A JP 23718793 A JP23718793 A JP 23718793A JP 23718793 A JP23718793 A JP 23718793A JP H0768695 A JPH0768695 A JP H0768695A
- Authority
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- Prior art keywords
- weight
- parts
- resin layer
- steel plate
- sheet
- 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.)
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Abstract
(57)【要約】
【構成】ガラスクロス、金属箔等の拘束層と発泡樹脂層
とを備えてなる鋼板補強シートであって、該発泡樹脂層
は（ａ）数平均分子量５００〜２００００のゴム５〜９
５重量％と（ｂ）熱可塑性エラストマーから選ばれた少
なくとも一種類９５〜５重量％とからなる混合物
［（ａ）＋（ｂ）］１００重量部に対し、（ｃ）無機質
充填材５〜１０００重量部（ｄ）粘着付与剤１〜２００
重量部（ｅ）軟化剤０〜２００重量部（ｆ）架橋剤１〜
１００重量部（ｇ）発泡剤１〜１００重量部を配合して
なる。
【効果】発泡、熱硬化型の鋼板補強シートで、特に自動
車に使用した場合に、補強効果が高く、軽量化に寄与す
ることが可能で、大幅なコストダウンを実現出来る。(57) [Summary] [Structure] A steel plate reinforced sheet comprising a constraining layer such as glass cloth and metal foil and a foamed resin layer, wherein the foamed resin layer is (a) a rubber having a number average molecular weight of 500 to 20,000. 5-9
5 parts by weight and (b) at least one kind selected from thermoplastic elastomers 95 to 5 parts by weight to 100 parts by weight of a mixture [(a) + (b)] (c) inorganic filler 5 to 1000 Parts by weight (d) tackifier 1-200
Parts by weight (e) 0 to 200 parts by weight (f) crosslinker 1
100 parts by weight (g) 1 to 100 parts by weight of a foaming agent is blended. [Effect] A foaming and thermosetting steel plate reinforcing sheet, which has a high reinforcing effect especially when used for automobiles, can contribute to weight reduction, and can realize a significant cost reduction.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種の生産機械、輸送
機械、産業用機械の鋼板に貼着して使用される鋼板補強
シートに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel plate reinforcing sheet which is used by being attached to steel plates of various production machines, transportation machines and industrial machines.
【０００２】[0002]
【従来の技術】自動車の場合、重量の軽減化、鋼板強度
の進歩によって、現在使用されている自動車用鋼板の厚
さは、一般に、０．６５〜０．８ｍｍである。鋼板の構
造上の強度は充分なのであるが、ある一定面積以上の鋼
板部分は外部応力に対して変形し易いことから、外部か
らは見えない内側に鋼板補強材を貼着することにより外
部応力による鋼板の変形を防いでいる。これらの補強材
は、アルキド樹脂、エポキシ樹脂、アクリル樹脂、ウレ
タン樹脂、ユリア樹脂等の合成樹脂系材料と硬化剤に適
宜充填材、添加材を配合して混合混練し、適当な加工手
段によって所望の大きさ、形状に加工し、鋼板補強部に
貼着し、所定の条件で熱硬化させることにより鋼板を補
強している。2. Description of the Related Art In the case of automobiles, the thickness of automobile steel sheets currently in use is generally 0.65 to 0.8 mm due to reduction of weight and progress of steel sheet strength. Although the structural strength of the steel sheet is sufficient, the steel sheet portion with a certain area or more is easily deformed by external stress. Prevents deformation of the steel plate. These reinforcing materials are mixed with a synthetic resin material such as an alkyd resin, an epoxy resin, an acrylic resin, a urethane resin, and a urea resin, a curing agent, a filler and an additive as appropriate, and are mixed and kneaded. Is processed into the size and shape of No. 3, and is attached to the steel plate reinforcing portion, and the steel plate is reinforced by heat curing under predetermined conditions.
【０００３】しかし、所望の補強効果を得るためには相
当の厚さの補強材が必要であり、自動車の燃費向上のた
めの軽量化の要求には相反する重量増となっていた。ま
た、上記の樹脂組成物は一般に高価であるため、より安
価で、しかも軽量で鋼板補強効果のある補強シートが求
められているというのが現状である。However, in order to obtain a desired reinforcing effect, a reinforcing material having a considerable thickness is required, and the weight has increased against the demand for weight reduction for improving fuel efficiency of automobiles. In addition, since the above resin composition is generally expensive, there is a demand for a cheaper and lighter reinforcing sheet having a steel plate reinforcing effect.
【０００４】[0004]
【発明が解決しようとする課題】本発明の課題は、補強
シート自体の重量を軽量化して車両重量の軽減化に寄与
し、しかも価格対性能比の高い鋼板補強シートを開発す
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to develop a steel sheet reinforcing sheet which contributes to a reduction in vehicle weight by reducing the weight of the reinforcing sheet itself and has a high price / performance ratio.
【０００５】[0005]
【課題を解決するための手段】かかる課題を解決せんと
して本発明者らは鋭意研究の結果、拘束層と、特定のゴ
ム及び樹脂エラストマーの組合せ及びその他の成分から
なる発泡樹脂層とからなる鋼板補強材であれば、極めて
軽量にして、価格対性能比の高い鋼板補強シートが顕現
できることを見出したものである。すなわち本発明は以
下に存する。Means for Solving the Problems In order to solve the above problems, the present inventors have earnestly studied and as a result, a steel sheet comprising a constraining layer and a foamed resin layer comprising a combination of a specific rubber and a resin elastomer and other components. The present inventors have found that if it is a reinforcing material, it is possible to realize a steel sheet reinforcing sheet that is extremely lightweight and has a high price-performance ratio. That is, the present invention is as follows.
【０００６】拘束層と発泡樹脂層とを備えてなる鋼板補
強シートであって、該発泡樹脂層の発泡前樹脂層は
（ａ）数平均分子量５００〜２００００のゴム５〜９５
重量％と（ｂ）熱可塑性エラストマーから選ばれた少な
くとも一種類９５〜５重量％とからなる混合物［（ａ）
＋（ｂ）］１００重量部に対し、（ｃ）無機質充填材５
〜１０００重量部（ｄ）粘着付与剤１〜２００重量部
（ｅ）軟化剤０〜２００重量部（ｆ）架橋剤１〜１００
重量部（ｇ）発泡剤１〜１００重量部を配合してなるこ
とを特徴とする鋼板補強シートで、好ましくは、当該拘
束層が、ガラスクロス、カーボンファイバー、有機繊維
系不織布、金属箔のいずれかから選ばれる少なくとも一
種類以上の材料からなることを特徴とする、上記に記載
された鋼板補強シート。A steel plate reinforcing sheet comprising a constraining layer and a foamed resin layer, wherein the resin layer before foaming of the foamed resin layer is (a) rubber 5 to 95 having a number average molecular weight of 500 to 20,000.
By weight and (b) at least one kind selected from thermoplastic elastomers 95 to 5% by weight [(a)
+ (B)] 100 parts by weight, (c) inorganic filler 5
To 1000 parts by weight (d) tackifier 1 to 200 parts by weight (e) softener 0 to 200 parts by weight (f) crosslinking agent 1 to 100
Parts by weight (g) 1 to 100 parts by weight of a foaming agent, wherein the constraining layer is preferably glass cloth, carbon fiber, organic fiber-based non-woven fabric, or metal foil. The steel sheet reinforcing sheet described above, which is made of at least one kind of material selected from the above.
【０００７】本発明で使用される（ａ）成分のゴムとし
ては、ポリブタジエンゴム、１，２ーポリブタジエンゴ
ム、スチレンーブタジエンゴム、アクリルニトリルーブ
タジエンゴム、ポリイソプレンゴム、クロロプレンゴ
ム、イソブチレンーイソプレンゴム等の共役ジエン系重
合体が挙げられる。特にーＯＨ、ーＣＯＯＨ、ーＮ
Ｈ2、ーＮＣＯ、ーＣＨ＝ＣＨ2等の官能基を有するゴム
が挙げられる。特にポリブタジエンゴム、スチレンーブ
タジエンゴム、イソブチレンーイソプレンゴムが推奨さ
れる。その数平均分子量は５００〜２００００、好まし
くは１０００〜１００００である。数平均分子量が５０
０未満であると油面で処理された鋼板への粘着強度が低
下する虞れがあり、２００００を越えると形状追従性が
悪くなる虞れがある。これらのゴム成分の配合量は５〜
９５重量％、好ましくは３０〜９０重量％である、ゴム
成分の配合量が５重量％未満であると粘着性、形状追従
性が低下する。９５重量％を越えて配合すると架橋前の
組成物の粘度が低くなり、油面処理された鋼板への粘着
強度が低下する。The rubber of component (a) used in the present invention includes polybutadiene rubber, 1,2-polybutadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, polyisoprene rubber, chloroprene rubber, isobutylene-isoprene rubber. And other conjugated diene-based polymers. Especially -OH, -COOH, -N
Examples thereof include rubbers having functional groups such as H 2 , —NCO, and —CH═CH 2 . Particularly, polybutadiene rubber, styrene-butadiene rubber, and isobutylene-isoprene rubber are recommended. Its number average molecular weight is 500 to 20,000, preferably 1,000 to 10,000. Number average molecular weight is 50
If it is less than 0, the adhesive strength to the steel plate treated on the oil surface may decrease, and if it exceeds 20,000, the shape following property may deteriorate. The compounding amount of these rubber components is 5
95% by weight, preferably 30 to 90% by weight. If the compounding amount of the rubber component is less than 5% by weight, the tackiness and the shape following property are deteriorated. If it is blended in an amount of more than 95% by weight, the viscosity of the composition before crosslinking becomes low, and the adhesive strength to the oil-surface-treated steel sheet is lowered.
【０００８】本発明に使用される（ｂ）成分の熱可塑性
エラストマーとしては、１，２ーポリブタジエン、エチ
レンー酢酸ビニル共重合体、エチレンーエチルアクリレ
ート共重合体、芳香族ビニル化合物と共役ジエン化合物
との共重合体及びこれらの水添物、アイオノマー、ポリ
オレフィンのカルボキシ変性体等が挙げられる。上記熱
可塑性エラストマーにエポキシ樹脂、ポリイソシアネー
ト等を併用したものも使用できる。上記のうち好ましい
のは、１，２ーポリブタジエン、芳香族ビニル化合物と
共役ジエン化合物との共重合体、特にそのブロック共重
合体及びポリオレフィンの酸変性体及びこれらにエポキ
シ樹脂、ポリイソシアネートを配合したものである。
１，２ーポリブタジエンとしては、１，２結合含量が７
０％以上、好ましくは８５％以上のものであり、結晶化
度が５％以上、好ましくは１０〜４０％のものが推奨さ
れる。熱可塑性エラストマーの分子量は、混練加工性及
び架橋発泡性を得るためには、［η］（トルエン３０
℃）が０．５ｄＩ／ｇｒ以上であることが好ましい。The component (b) thermoplastic elastomer used in the present invention includes 1,2-polybutadiene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, aromatic vinyl compound and conjugated diene compound. And copolymers thereof, hydrogenated products thereof, ionomers, carboxy-modified polyolefins, and the like. It is also possible to use a combination of the thermoplastic elastomer with an epoxy resin, polyisocyanate or the like. Among the above, preferred is 1,2-polybutadiene, a copolymer of an aromatic vinyl compound and a conjugated diene compound, particularly a block copolymer thereof and an acid-modified polyolefin, and an epoxy resin and a polyisocyanate compounded therein. It is a thing.
The 1,2-polybutadiene has a 1,2-bond content of 7
It is recommended that the crystallinity is 0% or more, preferably 85% or more, and the crystallinity is 5% or more, preferably 10 to 40%. The molecular weight of the thermoplastic elastomer is [η] (toluene 30
C.) is preferably 0.5 dI / gr or more.
【０００９】本発明に使用される（ｃ）成分の無機質充
填材としては、炭酸カルシウム、硫酸バリウム、水酸化
マグネシウム、マイカ、タルク、クレー、ケイ酸、酸化
チタン、カーボンブラック等の顔料類、カーボン繊維、
コットンフロック等の繊維状充填材等が使用できる。無
機質充填材の配合量としては、前記［（ａ）＋（ｂ）］
成分１００重量部に対して５〜１０００重量部、好まし
くは５０〜８００重量部である。５重量部未満の配合量
であると、混練性に劣り、また、全体の価格が上昇する
ためコスト的に不利である。一方、１０００重量部を越
えて配合した場合、粘着性及び強度が低下する。Examples of the inorganic filler as the component (c) used in the present invention include pigments such as calcium carbonate, barium sulfate, magnesium hydroxide, mica, talc, clay, silicic acid, titanium oxide and carbon black, and carbon. fiber,
A fibrous filler such as cotton floc can be used. The blending amount of the inorganic filler is [(a) + (b)] above.
It is 5 to 1000 parts by weight, preferably 50 to 800 parts by weight, relative to 100 parts by weight of the component. If the blending amount is less than 5 parts by weight, the kneadability will be poor and the overall price will increase, which is disadvantageous in terms of cost. On the other hand, when the amount is more than 1000 parts by weight, the tackiness and strength are lowered.
【００１０】本発明に使用される（ｄ）成分の粘着付与
剤としては、ロジン樹脂、テルペン系樹脂、クマロンイ
ンデン系樹脂、脂肪族及び芳香族系石油樹脂が例示でき
る。粘着付与剤の配合量としては、前記［（ａ）＋
（ｂ）］成分１００重量部に対して１〜２００重量部で
ある。１重量部未満の配合量であると鋼板及び拘束層へ
の粘着性が低下する虞れがあり、一方、２００重量部を
越えて配合した場合、強度が低下する。Examples of the tackifier as the component (d) used in the present invention include rosin resins, terpene resins, coumarone indene resins, aliphatic and aromatic petroleum resins. As the compounding amount of the tackifier, [(a) +
(B)] 1 to 200 parts by weight based on 100 parts by weight of the component. If the blending amount is less than 1 part by weight, the adhesion to the steel plate and the constraining layer may be lowered, while if the blending amount is more than 200 parts by weight, the strength is lowered.
【００１１】本発明に使用される（ｅ）成分の軟化剤と
しては、一般にプロセスオイル、エクステンダーオイル
と呼ばれる鉱物油系のゴム用軟化剤が挙げられる。上記
他成分との相溶性の点からナフテン系及び芳香族系のも
のが好ましい。その他、アタクチックポリプロピレン、
アスファルト等の瀝青物質が例示できる。これら（ｅ）
成分の配合量としては、前記［（ａ）＋（ｂ）］成分１
００重量部に対して０〜２００重量部、好ましくは１０
〜１５０重量部である。２００重量部を越えて配合した
場合、混練加工性が著しく低下する。Examples of the softening agent of the component (e) used in the present invention include mineral oil-based softening agents for rubber generally called process oils and extender oils. From the viewpoint of compatibility with the above-mentioned other components, naphthene-based and aromatic compounds are preferable. Others, atactic polypropylene,
Bituminous substances such as asphalt can be exemplified. These (e)
As the compounding amount of the component, the above [(a) + (b)] component 1 is used.
0 to 200 parts by weight, preferably 10 to 100 parts by weight
~ 150 parts by weight. When the amount is more than 200 parts by weight, the kneading processability is significantly reduced.
【００１２】本発明に使用される（ｆ）成分の架橋剤と
しては硫黄、又は加熱により硫黄を生成する化合物と加
硫促進剤との組合せ、有機過酸化物、イソシアネート化
合物、アミン系化合物等が挙げられる。紫外線、電子
線、Ｘ線等により架橋する方法も使用できる。硫黄とし
ては粉末硫黄、コロイド硫黄等一般的な硫黄が使用出
来、加熱により硫黄を生成する化合物としてはテトラメ
チルチウラムジスルフィド、テトラエチルチウラムジス
ルフィド等が例示出来る。これら（ｆ）成分の架橋剤の
配合量としては、前記［（ａ）＋（ｂ）］成分１００重
量部に対して１〜１００重量部、好ましくは３〜３０重
量部である。１重量部未満の配合量の場合架橋度が不足
して補強性能が得られ難い。１００重量部を越えて配合
した場合、脆弱となり実用性に劣る。As the crosslinking agent of the component (f) used in the present invention, sulfur, or a combination of a compound which produces sulfur by heating and a vulcanization accelerator, organic peroxide, isocyanate compound, amine compound, etc. Can be mentioned. A method of crosslinking with ultraviolet rays, electron beams, X-rays, etc. can also be used. As sulfur, general sulfur such as powdered sulfur and colloidal sulfur can be used, and examples of the compound that produces sulfur by heating include tetramethylthiuram disulfide and tetraethylthiuram disulfide. The amount of the cross-linking agent as the component (f) to be blended is 1 to 100 parts by weight, preferably 3 to 30 parts by weight, based on 100 parts by weight of the [(a) + (b)] component. When the amount is less than 1 part by weight, the degree of crosslinking is insufficient and it is difficult to obtain the reinforcing performance. If it exceeds 100 parts by weight, it becomes brittle and poor in practicality.
【００１３】本発明に使用される（ｇ）成分の発泡剤と
しては、公知の無機あるいは有機発泡剤が使用できる。
その具体例としては、重炭酸ナトリウム、重炭酸アンモ
ニウム、炭酸ナトリウム、炭酸アンモニウム、アゾジカ
ルボンアミド、ジニトロソペンタメチレンテトラミン、
ジニトロソテレフタルアミド、アゾブスイソブチロニト
リル、アゾジカルボン酸バリウム、スルホニルヒドラジ
ド、トルエンスルホニルヒドラジド等を挙げることが出
来る。尿素、尿素誘導体等の発泡助剤との併用も出来
る。上記のうち好ましいのはアゾジカルボンアミド、ジ
ニトロソペンタメチレンテトラミンの各々あるいは併用
と尿素、尿素誘導体等の発泡助剤との組合せである。こ
れら（ｇ）成分の発泡剤の配合量としては、前記
［（ａ）＋（ｂ）］成分１００重量部に対して１〜１０
０重量部、好ましくは５〜７０重量部である。特に好ま
しくは１０〜５０重量部である。１重量部未満の配合量
の場合、所望の発泡効果が得られ難い。また、１００重
量部を越えて配合した場合、発泡剤から発生するガスに
より良好な外観が得られない虞れがある。As the foaming agent of the component (g) used in the present invention, known inorganic or organic foaming agents can be used.
Specific examples thereof include sodium bicarbonate, ammonium bicarbonate, sodium carbonate, ammonium carbonate, azodicarbonamide, dinitrosopentamethylenetetramine,
Examples thereof include dinitrosoterephthalamide, azobus isobutyronitrile, barium azodicarboxylic acid, sulfonyl hydrazide, and toluene sulfonyl hydrazide. It can also be used in combination with a foaming aid such as urea or a urea derivative. Of the above, preferred is a combination of azodicarbonamide, dinitrosopentamethylenetetramine or a combination thereof with a foaming aid such as urea or a urea derivative. The blending amount of the foaming agent as the component (g) is 1 to 10 with respect to 100 parts by weight of the component [(a) + (b)].
It is 0 part by weight, preferably 5 to 70 parts by weight. It is particularly preferably 10 to 50 parts by weight. When the amount is less than 1 part by weight, it is difficult to obtain the desired foaming effect. Further, when the amount is more than 100 parts by weight, a good appearance may not be obtained due to the gas generated from the foaming agent.
【００１４】本発明の発泡樹脂層に積層される拘束層と
しては、出来るだけ軽量で、薄膜であり、発泡樹脂層に
強靭性を付与出来、しかも発泡樹脂層と密着一体化し易
い材料が好ましい。具体的には、ガラスクロス、カーボ
ンファイバー、有機系合成樹脂繊維不織布、アルミニウ
ムやスチール、各種金属の合金類等の金属箔等が例示で
きる。上記のうちコスト、重量、密着性、強度を勘案す
るとガラスクロス、アルミニウム箔が特に好ましい。The constraining layer to be laminated on the foamed resin layer of the present invention is preferably a material which is as light as possible, is a thin film, can impart toughness to the foamed resin layer, and can be easily adhered and integrated with the foamed resin layer. Specific examples thereof include glass cloth, carbon fiber, organic synthetic resin fiber non-woven fabric, metal foil such as aluminum and steel, and alloys of various metals. Of the above, glass cloth and aluminum foil are particularly preferable in consideration of cost, weight, adhesion and strength.
【００１５】本発明における樹脂層を製造するには、上
記の各種配合物をディゾルバー、バンバリーミキサー、
プラネタリーミキサー、オープンニーダー、真空ニーダ
ー等の従来公知の混合分散機によって分散混練後、カレ
ンダーロール、押出成形機等の加工機械によってシート
状に加工することにより製造される。拘束層と発泡樹脂
層とを備えてなる鋼板補強シートは、上記で得られた樹
脂層と拘束層とを積層接着し、鋼板に貼着後に、当該樹
脂層を加熱発泡することにより製造できる。予じめ、当
該樹脂層を加熱発泡させ、得られた発泡樹脂層と拘束層
とを積層接着してもよい。当該樹脂層の加熱発泡は、鋼
板への貼着前後において可能である。加熱発泡前の当該
樹脂層には強い粘着力があるので、その粘着力を利用し
て、積層加圧するだけで補強シートが得られる。ローラ
ー等の機械的な手段により加圧接着しても差し支えな
い。鋼板貼着前の樹脂層または発泡樹脂層の拘束層を積
層していない側には、鋼板へ貼着作業する際の利便を考
慮して離型紙を貼着しておくのが好ましい。In order to produce the resin layer in the present invention, the above-mentioned various compounds are mixed with a dissolver, a Banbury mixer,
It is produced by dispersing and kneading with a conventionally known mixing / dispersing machine such as a planetary mixer, an open kneader, a vacuum kneader, etc., and then processing into a sheet with a processing machine such as a calendar roll or an extrusion molding machine. The steel plate reinforcing sheet including the constraining layer and the foamed resin layer can be manufactured by laminating and bonding the resin layer and the constraining layer obtained above, adhering the resin layer to the steel plate, and then heat-foaming the resin layer. Preliminarily, the resin layer may be heated and foamed, and the obtained foamed resin layer and the constraining layer may be laminated and bonded. The foaming of the resin layer by heating can be performed before and after being attached to the steel plate. Since the resin layer before heating and foaming has a strong adhesive force, a reinforcing sheet can be obtained only by laminating and pressing the adhesive force. There is no problem even if pressure bonding is performed by a mechanical means such as a roller. It is preferable that release paper is attached to the side of the resin layer or the foamed resin layer on which the constraining layer is not laminated before the attachment of the steel sheet, in consideration of the convenience of attaching work to the steel sheet.
【００１６】[0016]
【実施例】以下に実施例を挙げ本発明のより詳細な理解
に供する。当然のことながら本発明は以下の実施例のみ
に限定されるものではない。EXAMPLES The following examples are provided for a more detailed understanding of the present invention. Naturally, the invention is not limited to the following examples.
【００１７】実施例１ 数平均分子量２０００のカルボキシ変性液状ポリブタジ
エン４０重量部及び１，２ポリブタジエン（ＪＳＲ Ｒ
Ｂ：日本合成ゴム（株）製）６０重量部の合計１００重
量部に対して、炭酸カルシウム１５０重量部、脂肪族系
石油樹脂５０重量部、プロセスオイル１０重量部、硫黄
１０重量部、加硫促進剤５重量部、発泡剤５重量部をオ
ープンニーダーにて混合、混練し、カレンダーロールに
て厚さ０．６ｍｍの樹脂層を形成した。この樹脂層に、
拘束層として厚さ０．２ｍｍのガラスクロスを貼着し、
片側には離型紙を貼着した。離型紙を剥がして、厚さ
０．８ｍｍの長方形のダル鋼板に貼着し、１８０℃にて
２０分間加熱して、樹脂層を発泡、熱硬化させ、鋼板に
密着させた。Example 1 40 parts by weight of carboxy-modified liquid polybutadiene having a number average molecular weight of 2000 and 1,2 polybutadiene (JSR R
B: manufactured by Japan Synthetic Rubber Co., Ltd.) 60 parts by weight, 100 parts by weight in total, 150 parts by weight of calcium carbonate, 50 parts by weight of aliphatic petroleum resin, 10 parts by weight of process oil, 10 parts by weight of sulfur, vulcanized. 5 parts by weight of the accelerator and 5 parts by weight of the foaming agent were mixed and kneaded with an open kneader, and a calender roll was used to form a resin layer having a thickness of 0.6 mm. In this resin layer,
As a constraining layer, a glass cloth with a thickness of 0.2 mm is attached,
Release paper was attached to one side. The release paper was peeled off and attached to a rectangular dull steel plate having a thickness of 0.8 mm, and heated at 180 ° C. for 20 minutes to foam and thermoset the resin layer and bring it into close contact with the steel plate.
【００１８】実施例２ 実施例１と同様の配合にて、オープンニーダーで混合混
練を行い、これをカレンダーロールにて厚さ０．８ｍｍ
の樹脂層を形成した。この樹脂層に、拘束層として厚さ
０．２ｍｍのガラスクロスを貼着し、片側には離型紙を
貼着した。離型紙を剥がして、厚さ０．８ｍｍの長方形
のダル鋼板に貼着し、１８０℃にて２０分間加熱して、
樹脂層を発泡、熱硬化させ、鋼板に密着させた。Example 2 The same composition as in Example 1 was mixed and kneaded with an open kneader, and this was calendered to a thickness of 0.8 mm.
The resin layer of was formed. A glass cloth having a thickness of 0.2 mm was attached to the resin layer as a constraining layer, and release paper was attached to one side. Peel off the release paper, attach it to a rectangular dull steel plate with a thickness of 0.8 mm, heat at 180 ° C for 20 minutes,
The resin layer was foamed, heat-cured, and brought into close contact with the steel plate.
【００１９】実施例３ 数平均分子量２０００のカルボキシ変性液状ポリブタジ
エン３０重量部及び１，２ポリブタジエン（ＪＳＲ Ｒ
Ｂ：日本合成ゴム（株）製）７０重量部の合計１００重
量部に対して、炭酸カルシウム１５０重量部、脂肪族系
石油樹脂５０重量部、プロセスオイル１０重量部、硫黄
２０重量部、加硫促進剤１０重量部、発泡剤１０重量部
をオープンニーダーにて混合、混練しカレンダーロール
にて厚さ０．６ｍｍの樹脂層を形成した。この樹脂層
に、拘束層として厚さ０．２ｍｍのガラスクロスを貼着
し、片側には離型紙を貼着した。離型紙を剥がして、厚
さ０．８ｍｍの長方形のダル鋼板に貼着し、１８０℃に
て２０分間加熱して、樹脂層を発泡、熱硬化させ、鋼板
に密着させた。Example 3 30 parts by weight of carboxy-modified liquid polybutadiene having a number average molecular weight of 2000 and 1,2 polybutadiene (JSR R
B: manufactured by Japan Synthetic Rubber Co., Ltd.) 70 parts by weight, 100 parts by weight in total, 150 parts by weight of calcium carbonate, 50 parts by weight of aliphatic petroleum resin, 10 parts by weight of process oil, 20 parts by weight of sulfur, vulcanized. 10 parts by weight of the accelerator and 10 parts by weight of the foaming agent were mixed and kneaded with an open kneader, and a calender roll was used to form a resin layer having a thickness of 0.6 mm. A glass cloth having a thickness of 0.2 mm was attached to the resin layer as a constraining layer, and release paper was attached to one side. The release paper was peeled off and attached to a rectangular dull steel plate having a thickness of 0.8 mm, and heated at 180 ° C. for 20 minutes to foam and thermoset the resin layer and bring it into close contact with the steel plate.
【００２０】実施例４ 拘束層として厚さ０．１ｍｍのアルミニウム箔を貼着し
た以外は、実施例１と同様にした。Example 4 Example 4 was repeated except that an aluminum foil having a thickness of 0.1 mm was stuck as a constraining layer.
【００２１】比較例 エポキシ樹脂に炭酸カルシウムを充填させた熱硬化性樹
脂鋼板補強シート（厚さ１．６ｍｍ）に拘束層として厚
さ０．２ｍｍのガラスクロスを貼着し、片側に離型紙を
貼着し、次いで、離型紙を剥がして、厚さ０．８ｍｍの
長方形のダル鋼板に貼着し、１８０℃にて２０分間加熱
して、エポキシ樹脂層を熱硬化させ、鋼板に密着させ
た。Comparative Example A glass cloth having a thickness of 0.2 mm was stuck as a constraining layer to a thermosetting resin steel plate reinforcing sheet (thickness: 1.6 mm) in which an epoxy resin was filled with calcium carbonate, and a release paper was provided on one side. Adhesion, then release paper was peeled off, it was adhered to a rectangular dull steel plate having a thickness of 0.8 mm, and it was heated at 180 ° C. for 20 minutes to heat-cur the epoxy resin layer and adhere it to the steel plate. .
【００２２】上記で得られた各補強シートについて、次
の試験方法に従い、試験を行った。その結果を表１に示
す。 試験方法 （１）重量測定（単位；ｋｇ／ｍ2）；各補強シートの
１ｍ2あたりの重量を測定した。 （２）補強力（単位；Ｎ）引張り試験機を使用し、スパ
ン１００ｍｍの楔型試料台の上に、鋼板が上に、鋼板補
強シートが下になる様に設置し、スパンの中央部から同
じく楔型の測定器を降下させ、鋼板に接する状態とし
た。該状態から測定器を１ｍｍ／ｍｉｎの速度で降下さ
せ、補強シートを貼着した鋼板の試料が１ｍｍ変位した
時の荷重を測定し、これに重力加速度を乗じて補強力を
算出した。Each reinforcing sheet obtained above was tested according to the following test method. The results are shown in Table 1. Test method (1) Weight measurement (unit: kg / m 2 ); The weight per 1 m 2 of each reinforcing sheet was measured. (2) Reinforcement force (unit: N) Using a tensile tester, install on a wedge type sample stand with a span of 100 mm so that the steel plate is on the top and the steel plate reinforcement sheet is on the bottom. Similarly, the wedge-shaped measuring device was lowered to bring it into contact with the steel plate. From this state, the measuring device was lowered at a speed of 1 mm / min, the load when the sample of the steel sheet to which the reinforcing sheet was attached was displaced by 1 mm was measured, and the gravity acceleration was multiplied to this to calculate the reinforcing force.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】本発明になる鋼板補強シートは発泡、熱
硬化型であるため、従来の鋼板補強材に比較して極めて
優れた補強性を顕現している。従って、自動車に使用し
た場合には軽量化に寄与することが可能である。さらに
高価な合成樹脂を使用した従来品と比較すると大幅なコ
ストダウンを実現しており、主としてコストの面から使
用が困難であった分野にも鋼板補強シートを使用する事
が出来る。例えば、電気洗濯機、電気冷蔵庫等の鋼板製
の家庭電気製品にも使用出来、応用範囲は極めて広い。Since the steel sheet reinforcing sheet according to the present invention is a foamed and thermosetting type, it exhibits extremely excellent reinforcing properties as compared with conventional steel sheet reinforcing materials. Therefore, when used in an automobile, it can contribute to weight reduction. Compared with the conventional products that use more expensive synthetic resin, the cost has been greatly reduced, and the steel sheet reinforcing sheet can be used mainly in the fields where it was difficult to use due to the cost. For example, it can be used for household electric appliances made of steel plates such as electric washing machines and electric refrigerators, and its application range is extremely wide.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ３２Ｂ 25/10 Ｆ１６Ｆ 15/02 Ｑ 9138−3Ｊ (72)発明者 鈴木 裕史 東京都北区豊島８丁目16番５号 日本特殊 塗料株式会社開発センター内 (72)発明者 近藤 博文 東京都北区豊島８丁目16番５号 日本特殊 塗料株式会社開発センター内Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B32B 25/10 F16F 15/02 Q 9138-3J (72) Inventor Hiroshi Suzuki 8-16 Toyoshima, Kita-ku, Tokyo No. 5 Nippon Special Paint Co., Ltd. Development Center (72) Inventor Hirofumi Kondo 8-16-5 Toyoshima, Kita-ku, Tokyo Inside Nippon Special Paint Co., Ltd. Development Center
Claims (2)
強シートであって、該発泡樹脂層の発泡前樹脂層は
（ａ）数平均分子量５００〜２００００のゴム５〜９５
重量％と（ｂ）熱可塑性エラストマーから選ばれた少な
くとも一種類９５〜５重量％とからなる混合物［（ａ）
＋（ｂ）］１００重量部に対し、（ｃ）無機質充填材５
〜１０００重量部（ｄ）粘着付与剤１〜２００重量部
（ｅ）軟化剤０〜２００重量部（ｆ）架橋剤１〜１００
重量部（ｇ）発泡剤１〜１００重量部を配合してなるこ
とを特徴とする鋼板補強シート。1. A steel sheet reinforcing sheet comprising a constraining layer and a foamed resin layer, wherein the resin layer before foaming of the foamed resin layer comprises (a) rubber 5 to 95 having a number average molecular weight of 500 to 20,000.
By weight and (b) at least one kind selected from thermoplastic elastomers 95 to 5% by weight [(a)
+ (B)] 100 parts by weight, (c) inorganic filler 5
To 1000 parts by weight (d) tackifier 1 to 200 parts by weight (e) softener 0 to 200 parts by weight (f) crosslinking agent 1 to 100
Parts by weight (g) A steel sheet reinforcing sheet, characterized in that it comprises 1 to 100 parts by weight of a foaming agent.
バー、有機繊維系不織布、金属箔のいずれかから選ばれ
る少なくとも一種以上の材料からなることを特徴とす
る、請求項１に記載された鋼板補強シート。2. The steel plate reinforcement according to claim 1, wherein the constraining layer is made of at least one material selected from the group consisting of glass cloth, carbon fiber, organic fiber-based non-woven fabric, and metal foil. Sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23718793A JP3256916B2 (en) | 1993-08-31 | 1993-08-31 | Steel sheet reinforcement sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23718793A JP3256916B2 (en) | 1993-08-31 | 1993-08-31 | Steel sheet reinforcement sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0768695A true JPH0768695A (en) | 1995-03-14 |
| JP3256916B2 JP3256916B2 (en) | 2002-02-18 |
Family
ID=17011670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23718793A Expired - Lifetime JP3256916B2 (en) | 1993-08-31 | 1993-08-31 | Steel sheet reinforcement sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3256916B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312243C (en) * | 2003-08-08 | 2007-04-25 | 日东电工株式会社 | Pressure-sensitive adhesive sheet for steel plates |
| JP2007160917A (en) * | 2005-11-17 | 2007-06-28 | Nitto Denko Corp | Steel sheet reinforcement sheet |
| US7875344B2 (en) | 2003-11-04 | 2011-01-25 | Nitto Denko Corporation | Steel-plate-reinforcement resin composition, steel plate reinforcing sheet, and reinforcing method of steel plate |
| US8017533B2 (en) | 2003-07-04 | 2011-09-13 | Nitto Denko Corporation | Steel plate reinforcing sheet |
| US8092906B2 (en) | 2003-08-08 | 2012-01-10 | Nitto Denko Corporation | Adhesive sheet for steel plate |
-
1993
- 1993-08-31 JP JP23718793A patent/JP3256916B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8017533B2 (en) | 2003-07-04 | 2011-09-13 | Nitto Denko Corporation | Steel plate reinforcing sheet |
| CN1312243C (en) * | 2003-08-08 | 2007-04-25 | 日东电工株式会社 | Pressure-sensitive adhesive sheet for steel plates |
| US7267870B2 (en) | 2003-08-08 | 2007-09-11 | Nitto Denko Corporation | Pressure-sensitive adhesive sheet for steel plates |
| US8092906B2 (en) | 2003-08-08 | 2012-01-10 | Nitto Denko Corporation | Adhesive sheet for steel plate |
| US7875344B2 (en) | 2003-11-04 | 2011-01-25 | Nitto Denko Corporation | Steel-plate-reinforcement resin composition, steel plate reinforcing sheet, and reinforcing method of steel plate |
| JP2007160917A (en) * | 2005-11-17 | 2007-06-28 | Nitto Denko Corp | Steel sheet reinforcement sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3256916B2 (en) | 2002-02-18 |
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