JPH01225533A - Sandwich fiber-reinforced plastic molded products and automobile parts made of sandwich fiber-reinforced plastics - Google Patents
Sandwich fiber-reinforced plastic molded products and automobile parts made of sandwich fiber-reinforced plasticsInfo
- Publication number
- JPH01225533A JPH01225533A JP63050784A JP5078488A JPH01225533A JP H01225533 A JPH01225533 A JP H01225533A JP 63050784 A JP63050784 A JP 63050784A JP 5078488 A JP5078488 A JP 5078488A JP H01225533 A JPH01225533 A JP H01225533A
- Authority
- JP
- Japan
- Prior art keywords
- smc
- glass fiber
- specific gravity
- lightweight filler
- fiber reinforcing
- 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
- 229920002430 Fibre-reinforced plastic Polymers 0.000 title claims description 6
- 239000011151 fibre-reinforced plastic Substances 0.000 title claims description 6
- 239000003365 glass fiber Substances 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000011162 core material Substances 0.000 claims abstract description 8
- 239000003677 Sheet moulding compound Substances 0.000 claims description 51
- 230000002787 reinforcement Effects 0.000 claims description 8
- 230000005484 gravity Effects 0.000 abstract description 24
- 229920005989 resin Polymers 0.000 abstract description 11
- 239000011347 resin Substances 0.000 abstract description 11
- 239000012779 reinforcing material Substances 0.000 abstract description 7
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- -1 aluminum Chemical class 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004412 Bulk moulding compound Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、表面材がガラス繊維強化材を３０体積％以上
含有するシートモールディングコンパウンドで構成され
るとともに、芯材が中空状の軽量充填剤を１５体積％以
上含有するシートモールディングコンパウンドで構成さ
れていることを特徴とする軽量・高強度なサンドイッチ
繊維強化プラスチックス成形品およびこのサンドイッチ
繊維強化プラスチックス製の自動車部品に関するもので
ある。Detailed Description of the Invention "Industrial Application Field" The present invention is a sheet molding compound in which the surface material is composed of a sheet molding compound containing 30% by volume or more of glass fiber reinforcement, and the core material is a hollow lightweight filler. The present invention relates to a lightweight, high-strength sandwich fiber-reinforced plastic molded product characterized by being composed of a sheet molding compound containing 15% by volume or more of
「従来の技術」
周知のように、繊維強化プラスチックス（以下、ＦＲＰ
と略す）は金属（特に鉄）に比べ、軽量で強度、耐蝕性
に優れる等多くの特徴を有しており、バスタブ、浄化槽
、パイプ、ボート、いす、各種自動車部品等、多岐に亘
って使用されている。ＦＲＰの成形方法には多くの種類
があるか、その１つにプレス成形法がある。これは、予
め所定の温度に加熱されたプレス用金型内にＦＲＰ材料
を投人し、加圧、硬化させる方法であり、ＦｒｊＰｌ料
として、液状樹脂を用いる場合と、バルクモールディン
グコンパウド、シートモールディングコンパウンドＣ以
下、ＳＭＣと略す）等の成形材料を用いる場合とがある
。なかでも、ＳＭＣ等の成形材料を用いたプレス成形法
は、材料ロスが少ない、生産性が高い、作業環境が良い
等、他のＦＲＰ成形注形法べ多くの長所を有し、ＦＩＩ
Ｐ成形品の生産に広く用いられている。``Conventional technology'' As is well known, fiber reinforced plastics (hereinafter referred to as FRP)
) has many characteristics compared to metals (especially iron), such as being lighter, stronger, and more corrosion resistant, and is used in a wide variety of products such as bathtubs, septic tanks, pipes, boats, chairs, and various automobile parts. has been done. There are many types of FRP molding methods, one of which is press molding. This is a method in which the FRP material is poured into a press mold that has been heated to a predetermined temperature, and is then pressurized and hardened.This method is used in cases where liquid resin is used as the FrjPl material, bulk molding compound, and sheet molding. A molding material such as Compound C (hereinafter abbreviated as SMC) may be used. Among these, the press molding method using molding materials such as SMC has many advantages over other FRP molding and casting methods, such as less material loss, high productivity, and a good working environment.
Widely used in the production of P molded products.
「発明が解決しようとする課題」
Ｓ Ｍ Ｃ等の成形材料は、前記の様に多くの長所を有
しているが、アルミニウム等の軽金属よりも比剛性に劣
るため比剛性を要する分野に用いにくく、例えば剛性設
計されている自動車の内、外装部品、例えば、オーバー
フェンダ−、エアスポイラ−等の外装部品、及び、サン
ルーフハウジング、スライディングルーフパネル等の内
装部品のＳＭＣ化を図る場合、軽量化メリットがでない
という問題点がある。``Problem to be solved by the invention'' Molding materials such as SMC have many advantages as mentioned above, but they are inferior in specific rigidity to light metals such as aluminum, so they cannot be used in fields that require specific rigidity. For example, when using SMC for exterior parts such as over fenders and air spoilers, and interior parts such as sunroof housings and sliding roof panels, there is a weight reduction advantage. There is a problem that there is no
そこで、従来より、ＳＭＣの軽量化や高剛性化を図り、
比剛性を高める検討がなされている。ＳＭＣの軽量化方
法としては、中空状の軽量充填剤を用いる方法が知られ
ているが、この場合、軽量化を図る以上に、機械的特性
（強度、弾性率）の低下が粁しくなるという欠点があり
、アルミニウム並の比剛性を有するまでには至っていな
い。又、このような低比重ＳＭＣは、ハジキ、ピンポー
ル、ブリスタ性等の塗装性にも問題があるため、自動車
外装部品への適用は困難である。一方、ＳＭＣの高剛性
化には、ガラス繊維強化材含有率を高めろ方法が知られ
ているが、高剛性化を図る以上に比重が高くなるという
欠点があり、これも又、アルミニウム並の比剛性を有す
るまでには至っていない。強化材として、ガラス繊維よ
りら軽量でしかも高張力な、カーボン繊維、アラミド繊
維等を用いれば、アルミニウム以上の比剛性を存するこ
とら可能であるが、価格的実用性に難がある。Therefore, we have been trying to make SMC lighter and more rigid,
Studies are being conducted to increase the specific stiffness. A known method for reducing the weight of SMC is to use hollow lightweight fillers, but in this case, it is said that mechanical properties (strength, elastic modulus) deteriorate more than the weight reduction. It has some drawbacks and does not have a specific rigidity comparable to that of aluminum. In addition, such low specific gravity SMC has problems in paintability such as repellency, pin-pole and blister properties, so it is difficult to apply it to automobile exterior parts. On the other hand, to increase the rigidity of SMC, there is a known method of increasing the content of glass fiber reinforcement, but this method has the disadvantage that the specific gravity becomes higher than increasing the rigidity. It has not reached the point where it has specific stiffness. It is possible to use carbon fiber, aramid fiber, or the like, which is lighter than glass fiber and has higher tensile strength, as the reinforcing material because it has a specific rigidity higher than that of aluminum, but this is not practical in terms of price.
「課題を解決するための手段」
本発明者等は、この様な状況に鑑み脱色研究した結果、
低比重ＳＭＣを芯材とし、高強度Ｓ Ｍ Ｃを表面材と
してサントイブチ状に構成するこさ１こより、上記の如
き欠点が解消できることを見い出し、本発明を完成する
に至った。すなわち、本発明は、表面材がガラス繊維強
化材を３０体積％以上含有するＳＭＣで構成されるとと
もに、芯材が中空状の軽量充填剤を１５体積％以上含有
するＳＭＣで構成されていることを特徴とする軽量でし
かも高強度なサンドイッチＦＲＰ成形品を提供するもの
である。"Means for solving the problem" As a result of research on decolorization in view of the above situation, the present inventors found that
It has been discovered that the above-mentioned drawbacks can be overcome by constructing the product in the form of a sandbar, using low specific gravity SMC as the core material and high-strength SMC as the surface material, leading to the completion of the present invention. That is, in the present invention, the surface material is composed of SMC containing 30% by volume or more of glass fiber reinforcement, and the core material is composed of SMC containing 15% by volume or more of hollow lightweight filler. The present invention provides a lightweight and high-strength sandwich FRP molded product characterized by the following.
本発明で用いる高強度ＳＭＣは、ガラス繊維強化材に熱
硬化性樹脂を含浸してなる、好ましくは曲げ弾性率１２
００ ｋｇ／ ｍｍ”以上のもので、ガラス繊維強化材
を３０体積％以上含有するものである。この場合、ガラ
ス繊維強化材含有率が３０体積形未満のＳＭＣを表面材
として用いた場合、サンドイッチＦＲＰ成形品の高強度
化は発現し難く、好ましくは、ガラス繊維強化材含有率
が３５〜５５体積％のＳＭＣである。The high-strength SMC used in the present invention is made by impregnating a glass fiber reinforced material with a thermosetting resin, and preferably has a flexural modulus of 12.
00 kg/mm" or more, and contains glass fiber reinforcement of 30% or more by volume. In this case, if SMC with a glass fiber reinforcement content of less than 30% by volume is used as the surface material, the sandwich It is difficult to increase the strength of FRP molded products, and SMC with a glass fiber reinforcement content of 35 to 55% by volume is preferable.
また、本発明で用いる低比重ＳＭＣは、ガラス繊維強化
材に中空状の軽量充填剤と熱硬化性樹脂を混合した樹脂
ペーストを含浸してなる、好ましくは比重０．８〜１．
５のもので、中空状の軽量充填剤を！５体積％以上含有
する−ものである。中空状の軽量充填剤１５体積％未満
のＳＭＣを芯材として用いた場合、サンドイッチＦＲＰ
成形品の低比重化は発現し難＜、好ましくは、中空状の
軽量充填剤含有率が２０〜５０体積％のＳＭＣである。Further, the low specific gravity SMC used in the present invention is formed by impregnating a glass fiber reinforced material with a resin paste in which a hollow lightweight filler and a thermosetting resin are mixed, and preferably has a specific gravity of 0.8 to 1.
5, a hollow lightweight filler! Contains 5% by volume or more. When SMC with a hollow lightweight filler of less than 15% by volume is used as a core material, sandwich FRP
It is difficult to reduce the specific gravity of the molded product, and preferably SMC has a hollow lightweight filler content of 20 to 50% by volume.
ここで、ガラス繊維強化材とは、チョツプドストランド
マット、ガラスクロス、ロービングクロス等のシート状
の繊維強化材及びチョツプドストランドであり、好まし
くは、繊維長か１／２〜２インチのチョツプドガラスス
トランドである。Here, the glass fiber reinforced material refers to sheet-like fiber reinforced materials such as chopped strand mats, glass cloth, roving cloth, and chopped strands, and preferably has a fiber length of 1/2 to 2 inches. It is chopped glass strand.
また、中空状の軽量充填剤とは、好ましくは比重０．１
〜０，７の微小なプラスチック、ガラス等の中空体であ
り、好ましくは、１００ ｋｇ／ ｃｍ”以上の耐圧強
度を有するガラス中空体である。Further, the hollow lightweight filler preferably has a specific gravity of 0.1.
It is a hollow body made of plastic, glass, etc., which has a pressure resistance of 100 kg/cm" or more, preferably a glass hollow body having a pressure resistance of 100 kg/cm" or more.
さらに、熱硬化性樹脂としては、例えば、マトリクス樹
脂として、不飽和ポリエステル樹脂、ビニルエステル樹
脂、エポキシ樹脂、アクリル樹脂、フェノール樹脂等を
用いることができる。また、これら樹脂中には、充填剤
、低収縮化剤、顔料、離型剤、硬化剤、硬化促進剤、増
粘剤及びその他公知の添加剤等を混合することができる
。Further, as the thermosetting resin, for example, unsaturated polyester resin, vinyl ester resin, epoxy resin, acrylic resin, phenol resin, etc. can be used as the matrix resin. In addition, fillers, low-shrinkage agents, pigments, mold release agents, curing agents, curing accelerators, thickeners, and other known additives can be mixed into these resins.
本発明で用いるＳＭＣは、従来公知の製造方法で容易に
製造することができる。本発明のサンドイッチＦＲＰ成
形品の製造方法としては、例えば所定の寸法に裁断した
ＳＭＣを、高強度ＳＭＣ／低比重ＳＭＣ／高強度ＳＭＣ
のように、サンドイッチ状に重ね合わせたものをプレス
成形することにより、容易に得られるものである。プレ
ス成形条件は、通常のＳＭＣプレス成形条件と同様に、
温度が４０〜１８０℃、圧力が１０〜２００ｋｇ／ａｍ
”、加圧時間が１〜６０分間の範囲であるが、使用する
ＳＭＣの配合組成、成形品の形状・大きさ等により適宜
選定できる。The SMC used in the present invention can be easily manufactured by a conventionally known manufacturing method. As a method for manufacturing the sandwich FRP molded product of the present invention, for example, SMC cut into predetermined dimensions is cut into high strength SMC/low specific gravity SMC/high strength SMC.
It can be easily obtained by press-molding a sandwich-like structure. Press molding conditions are the same as normal SMC press molding conditions,
Temperature is 40~180℃, pressure is 10~200kg/am
"The pressing time is in the range of 1 to 60 minutes, and can be appropriately selected depending on the composition of the SMC used, the shape and size of the molded product, etc.
また、本発明の自動車部品とは、例えばオーバーフェン
ダ−、エアスポイラ−等の外装部品、サンルーフハウジ
ング、スライディングルーフパネル等の内装部品である
。この自動車部品としての性能は、その比剛性がアルミ
ニウムより優れたもの、即ち比剛性３ｒＥ／ρ＝７．１
５以上であることが望ましい。Further, the automobile parts of the present invention include, for example, exterior parts such as over fenders and air spoilers, and interior parts such as sunroof housings and sliding roof panels. The performance as an automobile part is that its specific rigidity is superior to that of aluminum, that is, the specific rigidity is 3rE/ρ=7.1
It is desirable that it is 5 or more.
「作用」
前記構成によれば、従来のＳＭＣに比べて軽量性、機械
的特性において大幅な改善がなされており、アルミニウ
ムよりも比剛性及び成形自由性に優れ、自動車の内・外
装部品、さらには住宅用パネル、ハウジング類、工業部
品、レジャー用品、電子・電気機器部品等多岐に亘って
使用することができる。"Function" According to the above structure, it has been significantly improved in lightness and mechanical properties compared to conventional SMC, and has better specific rigidity and moldability than aluminum, and is suitable for use in interior and exterior parts of automobiles, as well as It can be used in a wide variety of applications such as housing panels, housings, industrial parts, leisure goods, electronic and electrical equipment parts, etc.
「実施例」 以下、実施例に基づいて、本発明を具体的に説明する。"Example" The present invention will be specifically described below based on Examples.
（実施例−１）
表−１に示す高強度Ｓ Ｍ Ｃ（Ｂ ）と低比重ＳＭＣ
（Ｅ）をそれぞれ２５０Ｘ２５０ｍｍ寸法に切断し、第
１図に示すように、高強度ＳＭＣ（Ｂ）１枚／低比重Ｓ
ＭＣ（Ｅ）２枚／高強度ＳＭＣ（Ｂ）１枚の構成で重ね
合わせたものを、３００Ｘ３００ｍｍ平板成形用金型に
投入し、温度１４０℃、加圧カフ０トン、加圧時間３分
間の条件でプレス成形を行い、厚み約３．５ｍｍの平板
成形品を得た。なお、第１図中、符号Ｉは高強度ＳＭＣ
を示し、２は低比重ＳＭＣを示すものである。(Example-1) High strength SMC (B) and low specific gravity SMC shown in Table-1
(E) was cut into 250 x 250 mm dimensions, and as shown in Figure 1, 1 piece of high strength SMC (B) / 1 piece of low specific gravity S
A stack of two MC (E) sheets and one high-strength SMC (B) sheet was put into a 300 x 300 mm flat plate mold, and heated at a temperature of 140°C, a pressure cuff of 0 tons, and a pressure time of 3 minutes. Press molding was performed under the following conditions to obtain a flat plate molded product with a thickness of about 3.5 mm. In addition, in Fig. 1, the symbol I indicates high-strength SMC.
2 indicates low specific gravity SMC.
（実施例−２）
表−１に示す高強度ＳＭＣ（Ｃ）と低比重ＳＭＣ（Ｆ）
を実施例−１と同様にしてプレス成形を行い、厚み約３
．５ｍｍの平板成形品を得た。 ・（実施例−３）
表−１に示す高強度ＳＭＣ（Ｃ）と低比重ＳＭＣ（Ｆ）
を９２０Ｘ４９０ｍｍの基本寸法に裁断し、実施例−１
と同様の構成で重ね合わせたものを用いて、第２図に平
面図を示す自動車のサンルーフハウジング（一般肉厚３
ｍｍ）を成形した。サンルーフハウジングとは、自動
車用サンルーフの機構部品を取り付けるためのベースに
なる部品であり、軽重で高剛性であることを必要として
いる。この時の成形条件は、金型温度が（上型）１４６
℃、（下型）１４２℃、加圧力４５０トン、加圧時間３
分間、チャージｆｆ１４．６ｋｇであった。この成形品
の製品重量は、鉄インサート１．６ｋｇを含めて６．２
ｋｇであり、一般ＳＭＣ（比重１．８２）が７ 、１
ｋｇであったのに比べかなり軽量化が図れた。(Example-2) High strength SMC (C) and low specific gravity SMC (F) shown in Table-1
was press-formed in the same manner as in Example-1, and the thickness was approximately 3 mm.
．． A 5 mm flat plate molded product was obtained.・(Example-3) High strength SMC (C) and low specific gravity SMC (F) shown in Table-1
Example 1 was cut into basic dimensions of 920 x 490 mm.
A car sunroof housing (general wall thickness 3
mm) was molded. A sunroof housing is a component that serves as a base for attaching the mechanical components of an automobile sunroof, and must be light, heavy, and highly rigid. The molding conditions at this time are that the mold temperature (upper mold) is 146
℃, (lower mold) 142℃, pressurizing force 450 tons, pressurizing time 3
The charge ff was 14.6 kg per minute. The product weight of this molded product is 6.2 kg including the iron insert 1.6 kg.
kg, and the general SMC (specific gravity 1.82) is 7,1
The weight was considerably reduced compared to the original weight of 1 kg.
（比較例−１）
表−Ｉに示す高強度ＳＭＣ（Ａ）と低比重ＳＭＣ（Ｅ）
を実施例−１と同様にしてプレス成形を行い、厚み約３
．５ｍｍの平板成形品を得た。(Comparative Example-1) High strength SMC (A) and low specific gravity SMC (E) shown in Table-I
was press-formed in the same manner as in Example-1, and the thickness was approximately 3 mm.
．． A 5 mm flat plate molded product was obtained.
（比較例−２）
表−１に示す高強度Ｓ Ｍ Ｃ（Ｂ ）と低比重ＳＭＣ
（Ｄ）を実施例−１と同様にしてプレス成形を行い、厚
み約３．５ｍｍの平板成形品を得た。(Comparative Example-2) High strength SMC (B) and low specific gravity SMC shown in Table-1
(D) was press-molded in the same manner as in Example-1 to obtain a flat plate molded product with a thickness of about 3.5 mm.
（比較例−３）
表−■に示す高４強度ＳＭＣ（Ａ）と低比重ＳＭＣ（Ｅ
）を９２０Ｘ４９０ＩＩ＋ｌｌの基本寸法に裁断したも
のを用いて、実施例−３と同様にしてサンルーフハウジ
ングを成形した。この成形品の製品重量は、鉄インサー
ト１．６ｋｇを含めて５．９ｋｇであり、−般ＳＭＣ（
比重１．８２）が７ 、１ ｋｇであったのに比べ、か
なり軽量化が図れた。しかしながら、成形後に金型から
成形品を脱型した際、すでに割れ欠け等の欠陥か発生し
ており非常にこわれ易いものであった。(Comparative Example-3) High 4 strength SMC (A) and low specific gravity SMC (E
) was cut into basic dimensions of 920 x 490 II+ll, and a sunroof housing was molded in the same manner as in Example-3. The product weight of this molded product is 5.9 kg including the iron insert of 1.6 kg.
Compared to the 7.1 kg specific gravity (1.82), the weight was considerably reduced. However, when the molded product was removed from the mold after molding, defects such as cracking and chipping had already occurred, making it extremely fragile.
〈物性試験〉
次に、前記実施例−■、−２、−３及び比較例−１、−
２、−３の成形品より、２５Ｘ６０ｍｍのテストピース
を、平板成形品の場合は端部５０ｍｍを除く中央部から
、１０個切り出し、サンルーフハウジングの場合は第２
図に示す位置から１７個切り出して、曲げ強さ、曲げ弾
性率（ｆｌＳ Ｋ−７２０３に準拠）と比重（ＪＩＳ
Ｋ−７１１２に帛拠）を測定した。その各平均値を
表２に示したか、本発明のサンドイッチＦＲＰ成形品は
、これまでのＦＲＰ成形品の軽量性、機賊的特性におけ
る欠点を大幅に改善しており、アルミニウムよりら比強
度、比剛性に優れているものであった。<Physical property test> Next, the above Examples -■, -2, -3 and Comparative Examples -1, -
From the molded product 2 and -3, cut out 10 test pieces of 25 x 60 mm from the center excluding 50 mm of the edges in the case of a flat molded product.
Cut out 17 pieces from the positions shown in the figure, and measure their bending strength, bending modulus (based on flS K-7203), and specific gravity (JIS
(based on K-7112) was measured. The average values of each are shown in Table 2. The sandwich FRP molded product of the present invention has significantly improved the drawbacks of conventional FRP molded products in terms of lightness and mechanical properties, and has a higher specific strength and strength than aluminum. It had excellent specific rigidity.
「発明の効果」
本発明のサンドイッチＦ、ＲＰ成形品はこれまでの方法
の経用性、機械的特性における欠点を大幅に改善してお
り、アルミニウムよりも比剛性及び成形自由性に優れ、
自動車の内・外装部品、さらには住宅用パネル、ハウジ
ング類、工業部品、レジャー用品、電子−電気機器部品
等多岐に亘って使用することができる。"Effects of the Invention" The sandwich F and RP molded products of the present invention have significantly improved the usability and mechanical properties of conventional methods, and have superior specific rigidity and moldability than aluminum.
It can be used in a wide variety of applications, including interior and exterior parts of automobiles, housing panels, housings, industrial parts, leisure goods, electronic and electrical equipment parts, etc.
第１図は本発明の成形品の一態様を示す断面図、第２図
は自動車のサンルーフハウジングの概略平面図である。
１・・・・・・高強度ＳＭＣ，２・・・・・・低比重Ｓ
ＭＣ０出願人 大日本インキ化学工業株式会社出願人
アイシン精機味式会社
第１凶
第２図
ロサ〉アリング舒分FIG. 1 is a sectional view showing one embodiment of the molded product of the present invention, and FIG. 2 is a schematic plan view of a sunroof housing for an automobile. 1...High strength SMC, 2...Low specific gravity S
MC0 Applicant: Dainippon Ink & Chemicals Co., Ltd. Applicant: Aisin Seikimeki Co., Ltd.
Claims (2)
するシートモールディングコンパウンドで構成されると
ともに、芯材が中空状の軽量充填剤を１５体積％以上含
有するシートモールディングコンパウンドで構成されて
いることを特徴とするサンドイッチ繊維強化プラスチッ
クス成形品。(1) The surface material is composed of a sheet molding compound containing 30% by volume or more of glass fiber reinforcement, and the core material is composed of a sheet molding compound containing 15% by volume or more of a hollow lightweight filler. A sandwich fiber-reinforced plastic molded product characterized by:
するシートモールディングコンパウンドで構成されると
ともに、芯材が中空状の軽量充填剤を１５体積％以上含
有するシートモールディングコンパウンドで構成されて
いることを特徴とするサンドイッチ繊維強化プラスチッ
クス製の自動車部品。(2) The surface material is composed of a sheet molding compound containing 30% by volume or more of glass fiber reinforcement, and the core material is composed of a sheet molding compound containing 15% by volume or more of a hollow lightweight filler. An automobile part made of sandwich fiber-reinforced plastics characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63050784A JPH01225533A (en) | 1988-03-04 | 1988-03-04 | Sandwich fiber-reinforced plastic molded products and automobile parts made of sandwich fiber-reinforced plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63050784A JPH01225533A (en) | 1988-03-04 | 1988-03-04 | Sandwich fiber-reinforced plastic molded products and automobile parts made of sandwich fiber-reinforced plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01225533A true JPH01225533A (en) | 1989-09-08 |
Family
ID=12868447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63050784A Pending JPH01225533A (en) | 1988-03-04 | 1988-03-04 | Sandwich fiber-reinforced plastic molded products and automobile parts made of sandwich fiber-reinforced plastics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01225533A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009007464A (en) * | 2007-06-27 | 2009-01-15 | Japan Composite Co Ltd | Manufacturing method of molding material, molding material and molded product |
| WO2009110389A1 (en) | 2008-03-07 | 2009-09-11 | 旭有機材工業株式会社 | Heat-curable resin composition, fiber-reinforced molding material and molded article |
-
1988
- 1988-03-04 JP JP63050784A patent/JPH01225533A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009007464A (en) * | 2007-06-27 | 2009-01-15 | Japan Composite Co Ltd | Manufacturing method of molding material, molding material and molded product |
| WO2009110389A1 (en) | 2008-03-07 | 2009-09-11 | 旭有機材工業株式会社 | Heat-curable resin composition, fiber-reinforced molding material and molded article |
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