JPH0235654B2 - SENIKYOKAPURASUCHITSUKUSUSEIHINNOSEIKEIHOHO - Google Patents
SENIKYOKAPURASUCHITSUKUSUSEIHINNOSEIKEIHOHOInfo
- Publication number
- JPH0235654B2 JPH0235654B2 JP19195081A JP19195081A JPH0235654B2 JP H0235654 B2 JPH0235654 B2 JP H0235654B2 JP 19195081 A JP19195081 A JP 19195081A JP 19195081 A JP19195081 A JP 19195081A JP H0235654 B2 JPH0235654 B2 JP H0235654B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- molding space
- molding
- mold
- product
- 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
- 238000000465 moulding Methods 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 239000012783 reinforcing fiber Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 description 35
- 239000011347 resin Substances 0.000 description 35
- 239000003365 glass fiber Substances 0.000 description 7
- 239000006260 foam Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000009787 hand lay-up Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920001567 vinyl ester resin Polymers 0.000 description 2
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 1
- MWSKJDNQKGCKPA-UHFFFAOYSA-N 6-methyl-3a,4,5,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1CC(C)=CC2C(=O)OC(=O)C12 MWSKJDNQKGCKPA-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
この発明は繊維強化プラスチツクスにより所定
形状の製品、例えば面積の広いパネル状製品を成
形する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of molding a product of a predetermined shape, such as a panel-shaped product with a large area, from fiber-reinforced plastics.
従来、繊維強化プラスチツクス（以下FRPと
記す）を素材とした製品の成形方法として、多量
生産に適したSMC圧縮成形法や中量生産に適し
たコールドプレス法、あるいは少量生産に適した
ハンドレイアツプ法が知られているが、SMC圧
縮成形法により大型の製品を生産するとすれば、
極めて大型のSMC圧縮成形機が必要となるので、
設備コストが膨大になる問題があり、またコール
ドプレス法やハンドレイアツプ法で大型の製品を
多量生産するとすれば、これらの方法は本来中量
生産あるいは少量生産向きであるから、型の数や
作業人員の増大を招来し、その結果かなりの設備
費を要するうえに、作業スペースを相当広くしな
ければならなくなり、結局大型製品を多量生産す
る場合には、コールドプレス法やハンドレイアツ
プ法は現実には採用することができなかつた。 Traditionally, the methods for molding products made from fiber-reinforced plastics (hereinafter referred to as FRP) include the SMC compression molding method suitable for mass production, the cold pressing method suitable for medium volume production, and the hand-laying method suitable for small volume production. The UP method is known, but if you want to produce large products using the SMC compression molding method,
Since an extremely large SMC compression molding machine is required,
There is the problem of huge equipment costs, and if large products are produced in large quantities using the cold press method or hand lay-up method, these methods are originally suitable for medium or small quantity production, so the number of molds and This results in an increase in the number of workers, which in turn requires considerable equipment costs and requires a considerably larger work space.In the end, when producing large quantities of large products, the cold press method and hand lay-up method are not suitable. In reality, it could not be adopted.
他方従来、レジンインジエクシヨン法が知られ
ており、この方法によれば、上述した如き問題を
特に招来することなく大型の製品を成形すること
ができるが、面積の広い大型パネル状製品を成形
する場合、従来のレジンインジエクシヨン法では
樹脂が金型内の成形用空間（キヤビテイ）の隅々
まで行き渡りにくいので、繊維の含有率を最も高
くしたとしても35％程度が限度であり、要求され
る強度、剛性を満足する製品を成形し得ない場合
があつた。また従来のレジンインジエクシヨン法
では、樹脂が成形用空間の隅々に行き渡るのに時
間がかかることもあつて、主剤および硬化剤を、
硬化時間（キユアタイム）が長くなるよう調整し
ており、そのため例えば7000cm2程度のパネル状製
品を得る場合、成形開始から脱型まで、すなわち
製品を１個当りの成形に要する時間が数時間にも
及び場合があり、結局高強度、高剛性の大型パネ
ル状製品を多量生産する場合、従来のレジンイン
ジエクシヨン法は実用上採用し得ないのが実情で
あつた。 On the other hand, the resin injecting method is conventionally known. According to this method, large products can be molded without causing the above-mentioned problems, but it is difficult to mold large panel products with a wide area. When using the conventional resin injection method, it is difficult for the resin to spread to every corner of the molding space (cavity) in the mold, so even if the fiber content is the highest, it is limited to about 35%, which does not meet the requirements. In some cases, it was not possible to mold a product that satisfied the required strength and rigidity. In addition, in the conventional resin injection method, it takes time for the resin to spread to every corner of the molding space.
The curing time is adjusted to be long, so when producing a panel-shaped product of approximately 7000 cm 2 , the time required from the start of molding to demolding, that is, the time required to mold each product, can be several hours. As a result, the conventional resin injection method cannot be practically adopted when large-scale panel-shaped products with high strength and high rigidity are to be produced in large quantities.
この発明は上記の事情に鑑みてなされたもの
で、面積の広い大型パネル状FRP製品を迅速に
成形することのできる方法を提供することを目的
とするものであり、その特徴とするところは、主
剤と硬化剤とを、混合直後における粘度が200cps
以下でかつ注入時の温度における硬化時間が10分
以内となるよう予め調整しておき、補強用繊維を
配置した成形用空間内を真空吸引して減圧した
後、前記主剤と硬化剤とを混合しつつ、製品面積
に対して少なくとも4000cm2に１個の割合で設けた
注入口から前記成形用空間内に注入する点にあ
る。 This invention was made in view of the above circumstances, and aims to provide a method that can quickly form large panel-shaped FRP products with a wide area, and its characteristics are as follows: The viscosity of the base resin and curing agent immediately after mixing is 200 cps.
Adjust in advance so that the curing time is 10 minutes or less at the injection temperature, and after reducing the pressure by vacuum suction in the molding space where the reinforcing fibers are placed, mix the main ingredient and curing agent. In addition, the molding material is injected into the molding space through injection ports provided at least once every 4000 cm 2 of the product area.
以下この発明を実施例に基づいて詳細に説明す
る。第１図はこの発明を実施するために使用する
型を示す略解断面図であつて、成形すべきパネル
状製品に対応した形状の成形用空間１が上型２と
下型３とによつてこれらの間に形成されており、
その上型２の周辺部には突条４が全周に亘つて形
成され、また下型３の周辺部には前記突条４に対
応して可撓性材料からなるパツキング５が配置さ
れ、これら突条４およびパツキング５からなるシ
ール部６によつて前記成形用空間１を密閉し、そ
の気密性を保持するようになつている。前記上型
２および下型３のうちの一方（第１図では上型
２）には、製品の面積に対し1500〜4000cm2に１個
の割合で樹脂注入口７が設けられ、その注入口７
には溶剤洗浄不要型の衝突混合ヘツド８が連結さ
れている。さらに前記上型２および下型３のうち
の他方（第１図では下型３）には、ロート状の給
排気孔９が形成され、その給排気孔９はパイプ１
０を介して真空ポンプ（図示せず）に連通される
とともに、ソレノイド１１によつて駆動されるバ
ルブ１２により開閉されるようになつている。な
お、第１図中符号１３は上型２に形成した樹脂溜
まりであつて、樹脂を前記成形用空間１内に注入
した際に、成形用空間１内に残存している空気を
その樹脂溜まり１３に集めることにより、製品に
所謂巣が生じることを防止するようになつてい
る。 The present invention will be described in detail below based on examples. FIG. 1 is a schematic cross-sectional view showing a mold used to carry out the present invention, in which a molding space 1 having a shape corresponding to the panel-shaped product to be molded is formed by an upper mold 2 and a lower mold 3. It is formed between these
A protrusion 4 is formed around the entire circumference of the upper mold 2, and a packing 5 made of a flexible material is arranged on the periphery of the lower mold 3 in correspondence with the protrusion 4, The molding space 1 is hermetically sealed by the seal portion 6 made up of the protrusions 4 and the packing 5 to maintain its airtightness. One of the upper mold 2 and lower mold 3 (upper mold 2 in FIG. 1) is provided with resin injection ports 7 at a ratio of one resin injection port for every 1500 to 4000 cm 2 of the product area. 7
An impingement mixing head 8, which does not require solvent cleaning, is connected to the head. Furthermore, a funnel-shaped supply and exhaust hole 9 is formed in the other of the upper mold 2 and the lower mold 3 (lower mold 3 in FIG. 1), and the supply and exhaust hole 9 is connected to the pipe 1.
0 to a vacuum pump (not shown), and is opened and closed by a valve 12 driven by a solenoid 11. Note that reference numeral 13 in FIG. 1 is a resin reservoir formed in the upper mold 2, and when resin is injected into the molding space 1, the air remaining in the molding space 1 is removed from the resin reservoir. 13, it is possible to prevent so-called nests from forming in the product.
つぎに上記の型を使用したこの発明の成形方法
について説明する。まず、前記成形用空間１内に
ガラス繊維、炭素繊維またはケブラー繊維もしく
はこれらを組み合わせた補強用繊維１４を予め載
置しておき、前記バルブ１２をソレノイド１１に
よつて押し上げて給排気孔９を開いた後、図示し
ない真空ポンプを駆動して成形用空間１内を所定
の真空圧まで減圧し、しかる後給排気孔９をバル
ブ１２によつて閉じる。ついで主剤と硬化剤とを
前記衝突混合ヘツド８により混合しつつ前記成形
用空間１内に加圧注入する。その場合、主剤およ
び硬化剤としては、注入液温度における硬化時間
（キユアタイム）が10分以下の組み合わせのもの
を選び、そのためには不飽和ポリエステル、エポ
キシ、ビニルエステル、ウレタンなどの熱硬化性
樹脂、またはカプロラクタムによる所謂ナイロン
RIMの材料システムを使用すればよく、また前
記主剤および硬化剤は、混合直後の粘度が200cps
以下好ましくは100cps以下となるように、それぞ
れの原料タンク（図示せず）中で加熱しておく。 Next, the molding method of the present invention using the above mold will be explained. First, reinforcing fibers 14 such as glass fibers, carbon fibers, Kevlar fibers, or a combination thereof are placed in the molding space 1 in advance, and the valve 12 is pushed up by the solenoid 11 to open the air supply/exhaust hole 9. After opening, a vacuum pump (not shown) is driven to reduce the pressure in the molding space 1 to a predetermined vacuum pressure, and then the supply/exhaust hole 9 is closed by the valve 12. Next, the base material and the curing agent are mixed by the collision mixing head 8 and injected into the molding space 1 under pressure. In that case, select a combination of base resin and curing agent that has a curing time of 10 minutes or less at the temperature of the injection solution. or so-called nylon with caprolactam
RIM's material system can be used, and the base agent and curing agent have a viscosity of 200 cps immediately after mixing.
Each material is heated in a tank (not shown) so that the temperature is preferably 100 cps or less.
上記のようにして注入された樹脂液は、補強用
繊維１４に含浸しながら成形用空間１内に充満
し、その後液温および自己発熱による反応が進
み、硬化する。この場合、樹脂液（主剤と硬化剤
との混合液）は上記のように、粘度が200cps以下
好ましくは100cps以下に調整してあるので、繊維
含有率を高くしても成形用空間１内の隅々まで迅
速に行き渡り、また樹脂液は硬化時間が10分以下
となるよう設定してあるので、短時間のうちに製
品を得ることができる。 The resin liquid injected as described above fills the molding space 1 while impregnating the reinforcing fibers 14, and then a reaction occurs due to the liquid temperature and self-heating, and the resin liquid is cured. In this case, as mentioned above, the viscosity of the resin liquid (mixture of the main resin and curing agent) is adjusted to 200 cps or less, preferably 100 cps or less, so even if the fiber content is high, the viscosity in the molding space 1 is It quickly spreads to every corner, and the resin liquid is designed to cure in less than 10 minutes, so you can get the product in a short time.
そして、硬化した製品は、前記上型２を上昇さ
せて型を開いた後に脱型するが、第１図に示す成
形型では、前記バルブ１２をソレノイド１１によ
つて駆動することにより給排気孔９を開放し、か
つこの給排気孔９に接続したパイプ１０を介して
空気を成形用空間１内に吹き込めば、製品の脱型
をより容易に行なうことができる。 The cured product is removed from the mold after the upper mold 2 is raised to open the mold. In the mold shown in FIG. If air is blown into the molding space 1 through the pipe 10 connected to the air supply/exhaust hole 9, the product can be demolded more easily.
つぎにこの発明の実施例を示す。 Next, examples of this invention will be shown.
実施例 １
以下の条件で7000cm2のパネル状製品を成形し
た。Example 1 A 7000 cm 2 panel-shaped product was molded under the following conditions.
材料 主剤；ビスフエノール、ジグリシジルエ
ーテル 100部
硬化剤；メチルテトラヒドロ無水フタル
酸 80部
促進剤；イシダゾール系 １部
射出条件
主剤（80℃）と、硬化剤と促進剤との混合液
（40℃）とを衝突混合させることにより、55℃、
180cpsの射出用樹脂とした。 Materials Main agent: Bisphenol, diglycidyl ether 100 parts Curing agent: Methyltetrahydrophthalic anhydride 80 parts Accelerator: Isidazole 1 part Injection conditions Mixture of main agent (80℃), curing agent, and accelerator (40℃) 55℃,
The injection resin was 180 cps.
ガラス繊維含有率 45％（重量％）
注入圧力 ８Kg／cm2
硬化時間 ８分
得られた製品を検査したところ、ガラス繊維は
完全に樹脂によつて包み込まれ、ガラス繊維のみ
が残つている箇所はなく、またその製品は十分な
硬度、剛性を有するものであつた。 Glass fiber content: 45% (wt%) Injection pressure: 8 Kg/cm 2 Curing time: 8 minutes When the obtained product was inspected, the glass fibers were completely wrapped in the resin, and the areas where only the glass fibers remained were Moreover, the product had sufficient hardness and rigidity.
実施例 ２
実施例１と同様に7000cm2のパネル状製品を、以
下の条件で成形した。Example 2 Similar to Example 1, a 7000 cm 2 panel-shaped product was molded under the following conditions.
材料 Ａ液として、主剤；ビニルエステル（ス
チレンモノマ60％含有） 50部
硬化剤；MEKPO １部
Ｂ液として、主剤；ビニルエステル（ス
チレンモノマ40％含有） 50部
促進剤；ナフテン酸コバルト
0.3部
射出条件
Ａ液（20℃）とＢ液（60℃）とを衝突混合さ
せ、40℃、150cpsの射出用樹脂とした。 Materials As liquid A, main agent: vinyl ester (contains 60% styrene monomer) 50 parts Hardening agent: MEKPO 1 part As liquid B, main agent: vinyl ester (contains 40% styrene monomer) 50 parts Accelerator: cobalt naphthenate
0.3 part injection conditions Liquid A (20°C) and Liquid B (60°C) were mixed by collision to produce a resin for injection at 40°C and 150 cps.
ガラス繊維含有率 50％
注入圧力 ８Kg／cm2
硬化時間 ６分
この実施例においても、前記実施例１と同様
に、ガラス繊維は完全に樹脂によつて包み込ま
れ、ガラス繊維のみが残つている箇所はなく、ま
たその製品は十分な硬度、剛性を有するものであ
つた。 Glass fiber content: 50% Injection pressure: 8 Kg/cm 2 Curing time: 6 minutes In this example, as in Example 1, the glass fibers are completely wrapped in the resin, leaving only the glass fibers in the areas. The product had sufficient hardness and rigidity.
これらの実施例１および２からも明らかなよう
に、この発明の成形方法によれば、繊維含有率が
従来になく高く、したがつて高強度、高剛性の大
型パネル状FRP製品を短時間（上記の実施例で
は６分ないし８分以内）で成形することができ
る。 As is clear from these Examples 1 and 2, according to the molding method of the present invention, the fiber content is higher than ever before, and therefore a large panel-shaped FRP product with high strength and high rigidity can be produced in a short time ( In the above embodiments, molding can be performed within 6 to 8 minutes).
第２図はこの発明を実施するために使用する他
の成形型を示す略解断面図であつて、この成形型
は、成形用空間１内に加圧注入した樹脂を積極的
に加熱するように構成したものである。すなわ
ち、成形用空間１を形成する上下各型２，３の面
部２ａ，３ａは、平均肉厚２〜６mmのニツケル電
鋳製板とし、その背面に加熱用パイプ１５をハン
ダまたは金属溶射などの熱良導体１６で一定間隔
毎に固着し、さらにこの加熱用パイプ１５を含め
た前記面部２ａ，３ａの背面側全体を断熱材から
なるバツクアツプ層１７としたものであり、そし
て前記加熱用パイプ１５を熱媒体循環装置（図示
せず）に接続し、成形時に100〜180℃の熱媒体を
加熱用パイプ１５に供給・循環させることによ
り、成形用空間１内を急速加熱するよう構成した
ものである。なお、他の構成は第１図に示す成形
型とほぼ同様であるから、第２図中に第１図と同
一符号を付してその説明を省略する。 FIG. 2 is a schematic cross-sectional view showing another mold used to carry out the present invention, and this mold is designed to actively heat the resin injected under pressure into the molding space 1. It is composed of That is, the surface parts 2a and 3a of the upper and lower molds 2 and 3 forming the molding space 1 are made of nickel electroformed plates with an average wall thickness of 2 to 6 mm, and a heating pipe 15 is attached to the back surface of the plate using solder or metal spraying. The heat conductors 16 are fixed at regular intervals, and the entire back side of the surface portions 2a, 3a including the heating pipe 15 is covered with a back-up layer 17 made of a heat insulating material. It is connected to a heat medium circulation device (not shown) and is configured to rapidly heat the inside of the molding space 1 by supplying and circulating a heat medium of 100 to 180°C through the heating pipe 15 during molding. . The other configurations are substantially the same as the mold shown in FIG. 1, so the same reference numerals as in FIG. 1 are given in FIG. 2, and the explanation thereof will be omitted.
第２図に示す成形型を用いれば、成形用空間１
内に加圧注入した樹脂をより積極的に加熱してそ
の硬化を促進させることができるので、迅速な成
形が可能となり、また注入液温度における硬化時
間が10分以上の樹脂組成のものでも、同様に迅速
に成形することができる。なお、第２図に示す成
形型で製品を成形し、その製品を脱型した後は、
次の成形に備えて前記加熱用パイプ１５に低温の
熱媒体を流して上下各型２，３を冷却しておく。 If the mold shown in Fig. 2 is used, the molding space 1
Since the resin injected under pressure can be heated more actively to accelerate its curing, rapid molding is possible, and even for resin compositions that take more than 10 minutes to cure at the temperature of the injection liquid, It can be molded quickly as well. In addition, after molding the product with the mold shown in Figure 2 and demolding the product,
In preparation for the next molding, a low-temperature heat medium is passed through the heating pipe 15 to cool the upper and lower molds 2 and 3.
以上の説明では、この発明の基本的操作につい
て述べたが、この発明では、従来のレジンインジ
エクシヨン法と同様に、所謂インサート成形を行
なうことができる。すなわち、この発明の方法で
インサート成形を行なう場合には、補強用繊維１
４と共に硬質フオームコア部分的補強金属インサ
ートあるいはボルト、ナツト等を成形用空間１内
に配置しておけばよい。この場合、インサート部
材としての硬質フオームは、製品の要求に応じて
密度が0.1〜0.3ｇ／cm3のウレタンやアクリル製の
ものを用いるのが一般的であるが、その表面はプ
ラスチツクス層との密着力を確保するために溶剤
などにより離型剤を落としておくことが好まし
く、更に高強度の密着力を必要とする場合には、
硬質フオームの表面層をサンデイングして落とす
ことにより発泡セルを外表面に開口させ、成形時
に樹脂をその発泡セル内に入り込ませて硬化させ
る所謂アンカー効果を利用することが好ましい。
また硬質フオームコアはインサート後、FRPの
硬化時の熱によりガスを多量に発生し、製品の所
謂フクレを起こすおそれがあるので、硬質フオー
ムコアはインサート成形する以前にポストキユア
を施しておくことが好ましく、特にこの発明では
短時間に樹脂を硬化させるために発熱温度が相当
高くなるので、高温でのポストキユアを施してお
くことが好ましい。さらに部分的補強金属インサ
ート、ボルトインサートあるいはナツトインサー
トなどを成形用空間１内に載置する場合には、マ
トリツクス樹脂との密着力を十分なものとするた
めに、これらのインサート部材にプライマーと称
する樹脂を塗布したり、脱脂するなどの表面処理
を施すことが好ましい。その場合の表面処理剤と
しては、金属の材質とマトリツクス樹脂の種類と
の関係から、イソシアネート系、エポキシ系ある
いはシラン系などを使い分ける必要があることは
勿論である。また金属インサートが鉄の場合、成
形用空間１内への固定具としてマグネツトを用い
れば、固定作業を簡単かつ効率良く行なうことが
できる。 In the above explanation, the basic operation of the present invention has been described, but in the present invention, so-called insert molding can be performed in the same manner as the conventional resin injection method. That is, when performing insert molding by the method of this invention, reinforcing fiber 1
4 as well as a hard foam core partially reinforcing metal insert or bolts, nuts, etc. may be arranged in the molding space 1. In this case, the hard foam used as the insert member is generally made of urethane or acrylic and has a density of 0.1 to 0.3 g/cm 3 depending on the product requirements, but the surface of the foam is made of urethane or acrylic. In order to ensure good adhesion, it is preferable to remove the mold release agent with a solvent or the like.If even higher adhesion is required,
It is preferable to open the foamed cells to the outer surface by sanding off the surface layer of the hard foam, and utilize the so-called anchor effect in which the resin enters the foamed cells and hardens during molding.
In addition, after inserting a hard foam core, a large amount of gas is generated due to the heat generated during curing of the FRP, which may cause so-called blistering of the product, so it is preferable to post-cure the hard foam core before insert molding. In this invention, the heat generation temperature becomes considerably high in order to cure the resin in a short time, so it is preferable to perform post-curing at a high temperature. Furthermore, when partially reinforcing metal inserts, bolt inserts, nut inserts, etc. are placed in the molding space 1, these insert members are coated with a primer to ensure sufficient adhesion with the matrix resin. It is preferable to perform surface treatment such as coating with resin or degreasing. It goes without saying that the surface treatment agent in this case must be selected from isocyanate, epoxy, or silane based on the relationship between the metal material and the type of matrix resin. Further, when the metal insert is made of iron, if a magnet is used as a fixture for fixing it in the molding space 1, the fixing work can be carried out easily and efficiently.
以上の説明から明らかなようにこの発明の成形
方法によれば、主剤と硬化剤とを、混合直後にお
ける粘度が200cps以下でかつ注入時の温度におけ
る硬化時間が10分以内となるよう調整し、補強用
繊維を配置した成形用空間内を真空吸引して減圧
した後、前記主剤と硬右剤とを混合しつつ、製品
面積に対して少なくとも4000cm2に１個の割合で設
けた注入口から前記成形用空間内に注入するか
ら、面積の広い大型パネル状製品を成形する場
合、繊維含有率を50％程度まで従来になく高めて
も、樹脂を成形用空間内の隅々まで迅速に行き渡
らせ、しかもその樹脂を短時間で硬化させること
ができる。したがつてこの発明の方法によれば、
従来では樹脂が注入途中でゲル化を開始してしま
うなどのことにより短時間で成形することのでき
なかつた大型かつ高強度・高剛性のパネル状製品
を短時間で成形することができ、実用上優れた効
果を得ることができる。 As is clear from the above description, according to the molding method of the present invention, the base material and the curing agent are adjusted so that the viscosity immediately after mixing is 200 cps or less and the curing time at the injection temperature is within 10 minutes. After reducing the pressure in the molding space in which the reinforcing fibers are placed by vacuum suction, while mixing the base agent and the hardening agent, the injection port is placed at a rate of at least one inlet for every 4000 cm 2 of the product area. Since the resin is injected into the molding space, when molding large panel products with a wide area, even if the fiber content is increased to an unprecedented 50%, the resin cannot be quickly distributed to every corner of the molding space. Moreover, the resin can be cured in a short time. Therefore, according to the method of this invention,
It is now possible to mold large, high-strength, high-rigidity panel-shaped products in a short time, which was previously impossible to mold in a short time due to the resin starting to gel during injection, making it practical. Excellent effects can be obtained.
第１図はこの発明の成形方法を実施するために
使用する成形型の一例を示す略解断面図、第２図
は成形型の他の例を示す略解断面図である。
１……成形用空間、２……上型、３……下型、
７……樹脂注入口、８……衝突混合ヘツド、１４
……補強用繊維。
FIG. 1 is a schematic cross-sectional view showing an example of a mold used to carry out the molding method of the present invention, and FIG. 2 is a schematic cross-sectional view showing another example of the mold. 1...Molding space, 2...Upper mold, 3...Lower mold,
7... Resin inlet, 8... Collision mixing head, 14
...Reinforcing fiber.
Claims (1)
間内に予め補強用繊維を配置し、しかる後主剤と
硬化剤とを前記成形用空間内に加圧注入するとと
もに硬化させて製品を得るにあたり、前記主剤と
硬化剤とを、混合直後における粘度が200cps以下
でかつ注入液温度における硬化時間が10分以内と
なるよう調整し、前記成形用空間内を真空吸引し
て減圧した後、前記主剤と硬化剤とを混合しつ
つ、製品面積に対して少なくとも4000cm2に１個の
割合で設けた注入口から前記成形用空間内に注入
することを特徴とする繊維強化プラスチツクス製
品の成形方法。1 Reinforcing fibers are placed in advance in a sealed molding space formed between an upper mold and a lower mold, and then a main agent and a curing agent are injected under pressure into the molding space and cured to form a product. To obtain the above, adjust the base material and curing agent so that the viscosity immediately after mixing is 200 cps or less and the curing time at the temperature of the injection liquid is within 10 minutes, and after reducing the pressure in the molding space by vacuum suction. , wherein the base material and the curing agent are mixed and injected into the molding space through injection ports provided at least once every 4000 cm 2 of the product area. Molding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19195081A JPH0235654B2 (en) | 1981-11-30 | 1981-11-30 | SENIKYOKAPURASUCHITSUKUSUSEIHINNOSEIKEIHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19195081A JPH0235654B2 (en) | 1981-11-30 | 1981-11-30 | SENIKYOKAPURASUCHITSUKUSUSEIHINNOSEIKEIHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5892522A JPS5892522A (en) | 1983-06-01 |
| JPH0235654B2 true JPH0235654B2 (en) | 1990-08-13 |
Family
ID=16283146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19195081A Expired - Lifetime JPH0235654B2 (en) | 1981-11-30 | 1981-11-30 | SENIKYOKAPURASUCHITSUKUSUSEIHINNOSEIKEIHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0235654B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63307907A (en) * | 1987-04-21 | 1988-12-15 | Konan Tokushu Sangyo Kk | Mold for synthetic resin and preparation thereof |
| JPS6431836A (en) * | 1987-07-27 | 1989-02-02 | Mitsubishi Monsanto Chem | Amide-based polymer molded article |
| JP4669031B2 (en) | 2007-08-22 | 2011-04-13 | 株式会社セイエイ | Molding apparatus and molding method |
| JP2009174014A (en) * | 2008-01-25 | 2009-08-06 | Tzu-Wen Sung | Method of forming surface layer on substrate |
-
1981
- 1981-11-30 JP JP19195081A patent/JPH0235654B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5892522A (en) | 1983-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR950012870B1 (en) | Molding process for fiber reinforced plastics | |
| EP0434814A1 (en) | Molded composites | |
| US4235833A (en) | In-the-mold coating apparatus and method | |
| JPH0235654B2 (en) | SENIKYOKAPURASUCHITSUKUSUSEIHINNOSEIKEIHOHO | |
| JPH06210644A (en) | Method and apparatus for molding fiber reinforced plastic | |
| JPH04144723A (en) | Manufacture of fiber-reinforced resin molded form | |
| US4524043A (en) | Process for the manufacture of products from reinforced polyester resins | |
| EP0124604B1 (en) | Process for the manufacture of products from reinforced polyester resins | |
| JPS6025252B2 (en) | Molding method for fiber-reinforced thermosetting resin using resin in-die extension method | |
| US4329134A (en) | In-the-mold coating apparatus and method | |
| JP3513718B2 (en) | Structure reaction injection molding apparatus and structure reaction injection molding method | |
| CN114407270A (en) | Liquid nitrogen injected supercritical polymerization foaming shoe material | |
| JP3101166B2 (en) | In-mold coating molding method | |
| US3541195A (en) | Method for molding insulation materials | |
| JPS63218325A (en) | Rim manufacture of thermosetting fiber-reinforced composite body | |
| US4624814A (en) | Process for the manufacture of products from reinforced polyester resins | |
| JP2963070B2 (en) | Manufacturing method of synthetic resin composite board | |
| JP2944189B2 (en) | Molding method of composite molded article and composite molded article | |
| JP3321819B2 (en) | Reaction injection molding mold and molding method using the same | |
| JPH082543B2 (en) | Molding method for fiber reinforced plastic moldings | |
| JPS5856511B2 (en) | Molding method for thermosetting materials | |
| KR100796991B1 (en) | Reaction injection molding device and method | |
| EP0145458A2 (en) | Method for molding multicolored silicone rubber articles | |
| JPH07195388A (en) | Artificial stone product, and its production | |
| JPH07232343A (en) | Reaction injection molding method for thermosetting resin |