JPH04201433A - Preparation of molded item made of polyimide resin - Google Patents
Preparation of molded item made of polyimide resinInfo
- Publication number
- JPH04201433A JPH04201433A JP33463590A JP33463590A JPH04201433A JP H04201433 A JPH04201433 A JP H04201433A JP 33463590 A JP33463590 A JP 33463590A JP 33463590 A JP33463590 A JP 33463590A JP H04201433 A JPH04201433 A JP H04201433A
- Authority
- JP
- Japan
- Prior art keywords
- polyimide resin
- resin
- polyimide
- compd
- mold
- 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.)
- Granted
Links
- 229920001721 polyimide Polymers 0.000 title claims abstract description 34
- 239000009719 polyimide resin Substances 0.000 title claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 9
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 4
- 239000004642 Polyimide Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001354 calcination Methods 0.000 abstract 2
- 238000000748 compression moulding Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- -1 polytetrafluoroethylene Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- ANSXAPJVJOKRDJ-UHFFFAOYSA-N furo[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1=C2C(=O)OC(=O)C2=CC2=C1C(=O)OC2=O ANSXAPJVJOKRDJ-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は高強度で、かつ成形品の側面にクラックが生じ
ないポリイミド樹脂成形品の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for producing a polyimide resin molded product that has high strength and does not cause cracks on the side surfaces of the molded product.
〔従来の技術］
ポリイミド樹脂は耐熱性に極めて優れた樹脂であるが、
その軟化点があまりにも高いために通常の溶融成形が不
可能である。[Conventional technology] Polyimide resin is a resin with extremely excellent heat resistance, but
Its softening point is so high that normal melt molding is impossible.
したがって、従来からポリイミド樹脂を成形するにはポ
リイミド樹脂の粉末、あるいはこれに無機充填剤を添加
した樹脂配合物を金型内に充填し、加圧装置、たとえば
油圧プレス、空圧プレス、メカプレスを用いて加圧する
ことにより圧粉体を成形し、その後、この圧粉体を４０
０°Ｃ程度の高温に加熱して焼成し、ポリイミド樹脂成
形品を得る圧縮焼成成形法が採用されている。Therefore, conventionally, to mold polyimide resin, a mold is filled with polyimide resin powder or a resin compound with an inorganic filler added thereto, and a pressurizing device such as a hydraulic press, pneumatic press, or mechanical press is used to mold the polyimide resin. A green compact is formed by applying pressure using a
A compression firing molding method is used in which a polyimide resin molded product is obtained by heating and firing at a high temperature of about 0°C.
ポリイミド樹脂を圧縮焼成して高強度の成形品を得るた
めには約２０００〜４０００ｋｇ ／ ｃｍ ”の圧力
をかける必要があり、圧力が高い程、強度の高い成形品
が得られるが、ある圧力以上に加圧すると圧粉体の表面
、特に側面にクランクが生じ、商品価値がなくなる欠点
があった。In order to obtain a high-strength molded product by compressing and firing polyimide resin, it is necessary to apply a pressure of approximately 2,000 to 4,000 kg/cm. The higher the pressure, the stronger the molded product can be obtained, but above a certain pressure When pressurized to a certain degree, cranks occur on the surface of the green compact, especially on the sides, which has the disadvantage of losing its commercial value.
このクラックは圧縮の圧力を下げると発生しないが、圧
力が低いと成形品の強度が低下するという問題があった
。These cracks do not occur if the compression pressure is lowered, but there is a problem in that the strength of the molded product decreases when the pressure is low.
本発明の目的はポリイミド樹脂あるいはポリイミド樹脂
と充填剤の配合物を圧縮焼成する際、高圧をかけても成
形品側面にクランクが発生しない成形品を製造する方法
を提供することにある。An object of the present invention is to provide a method for producing a molded product that does not cause cranking on the side surface of the molded product even when high pressure is applied during compression firing of a polyimide resin or a blend of a polyimide resin and a filler.
上記従来技術の問題点を解決するため、本発明は次の手
段をとるものである。In order to solve the problems of the prior art described above, the present invention takes the following measures.
即ち、本発明のポリイミド樹脂成形品の製造方法は、９
９．９〜８０．０重量％のポリイミド樹脂および０．１
〜２０，０重量％のポリフッ化オレフィン樹脂からなる
樹脂配合物を圧縮成形して圧粉体を成形し、次いで加熱
焼成することを特徴とするものである。That is, the method for producing a polyimide resin molded article of the present invention is as follows:
9.9-80.0% by weight polyimide resin and 0.1
This method is characterized in that a resin compound consisting of ~20.0% by weight of polyfluorinated olefin resin is compression molded to form a green compact, which is then heated and fired.
本発明に用いるポリイミド樹脂は、主として下記のポリ
イミド構造を有しているものが使用される。The polyimide resin used in the present invention mainly has the following polyimide structure.
（本頁以下余白）
このポリイミド樹脂は、普通、ピロメリット酸無水物と
ジアミノジフェニルエーテルを反応させて作られるが、
酸成分またはジアミン成分の一部を他の酸又はジアミン
成分に置き替えた共重合物又は他の分子構造を有するポ
リイミド樹脂を一部混合してなる樹脂混合物も使用でき
るが、上記ポリイミド構造の樹脂が最適である。(Margins below this page) This polyimide resin is usually made by reacting pyromellitic anhydride and diaminodiphenyl ether.
A copolymer in which part of the acid component or diamine component is replaced with another acid or diamine component, or a resin mixture partially mixed with a polyimide resin having another molecular structure can also be used, but resins with the above polyimide structure can also be used. is optimal.
本発明に用いるポリフッ化オレフィン樹脂は、ポリテト
ラフルオロエチレン樹脂又はそれの共重合体が使用可能
であるが、ポリテトラフルオロエチレンが最適である。As the polyfluorinated olefin resin used in the present invention, polytetrafluoroethylene resin or a copolymer thereof can be used, but polytetrafluoroethylene is most suitable.
ポリフッ化オレフィン樹脂の添加量は樹脂配合物全体に
対して０．１〜２０．０重量％であり、０．１重置％未
満ではクラック発生防止効率が小さく、２０重量％を越
えるとポリイミド樹脂本来の特性が失なわれる。そして
、好ましい範囲は０．５〜５重量％である。The amount of polyfluorinated olefin resin added is 0.1 to 20.0% by weight based on the entire resin mixture. If it is less than 0.1% by weight, the crack generation prevention efficiency is low, and if it exceeds 20% by weight, the polyimide resin Original characteristics are lost. The preferred range is 0.5 to 5% by weight.
一方、本発明のポリイミド樹脂には成形性、寸法安定性
、低吸水性等を付与する目的で種々の充填剤を添加する
ことができる。On the other hand, various fillers can be added to the polyimide resin of the present invention for the purpose of imparting moldability, dimensional stability, low water absorption, etc.
好ましい充填剤としてはガラス繊維、炭素繊維、無機ウ
ィスカー等の繊維状物、タルク、シリカ、アルミナ、カ
オリン、ワラステナイト、ガラスピーズ、セラミック粉
末等が挙げられ、これらの添加量はポリイミド樹脂と充
填剤の合計量に対して１０〜６０重量％が好ましい。Preferred fillers include glass fibers, carbon fibers, fibrous materials such as inorganic whiskers, talc, silica, alumina, kaolin, wollastenite, glass beads, ceramic powder, etc., and the amount of these added is the same as that of the polyimide resin and filler. It is preferably 10 to 60% by weight based on the total amount.
また、充填剤の添加量が増すと成形品にクラックが発生
しやすくなるが、６０重量％以下であれば、前記のポリ
フッ化オレフィン樹脂を配合することにより、これを防
止することができる。Furthermore, as the amount of filler added increases, cracks tend to occur in the molded product, but if the amount is 60% by weight or less, this can be prevented by blending the polyfluorinated olefin resin.
本発明における成形方法はポリイミド樹脂粉末とポリフ
ッ化オレフィンの配合物を圧縮して圧粉体を成形し、次
いでこれを加熱焼成するが、圧粉体を作るための圧力は
２０００〜５０００ｋｇ ／ ｃＩ１１’が好ましく、
また焼成温度は３７０〜４３０℃が好ましい。In the molding method of the present invention, a mixture of polyimide resin powder and polyfluorinated olefin is compressed to form a green compact, which is then heated and fired, and the pressure for making the green compact is 2000 to 5000 kg/cI11' is preferable,
Further, the firing temperature is preferably 370 to 430°C.
以下、実施例を挙げて本発明を具体的に説明する。 The present invention will be specifically described below with reference to Examples.
実施例１〜４および比較例１
ピロメリット酸無水物とジアミノジフェニルエーテルを
等モルで反応させて得たポリイミド樹脂粉末、ポリテト
ラフルオロエチレン粉末および各種充填剤を配合し、こ
れを金型に入れ、油圧プレスで圧力３０００ｋｇ／ｃｍ
”で圧縮成形し、直径４０ｍｍ、厚み１０ｍｍの圧粉体
を得た。次いでこの圧粉体を４００″Ｃ１２４０分加熱
焼成し、成形品を得た。Examples 1 to 4 and Comparative Example 1 Polyimide resin powder obtained by reacting equimolar amounts of pyromellitic anhydride and diaminodiphenyl ether, polytetrafluoroethylene powder, and various fillers were blended, and this was placed in a mold, Pressure 3000kg/cm with hydraulic press
'' to obtain a green compact with a diameter of 40 mm and a thickness of 10 mm.The compact was then heated and fired at 400''C for 1240 minutes to obtain a molded product.
これらの成形品の組成および成形品の外観を表１に示し
た。Table 1 shows the composition and appearance of these molded products.
（本頁以下余白）
［発明の効果］
本発明はポリイミド樹脂にポリフッ化オレフィン樹脂を
配合して圧縮焼成するため、クラックが発生しない成形
品が得られる。(Margins below this page) [Effects of the Invention] In the present invention, a polyfluorinated olefin resin is blended with a polyimide resin and then compressed and fired, so a molded product without cracks can be obtained.
代理人 弁理士 小 川 信 −Agent: Patent Attorney Nobuo Kogawa -
Claims (2)
び０．１〜２０．０重量％のポリフッ化オレフィン樹脂
からなる樹脂配合物を圧縮成形して圧粉体を成形し、次
いで加熱焼成することを特徴とするポリイミド樹脂成形
品の製造方法。(1) A resin compound consisting of 99.9 to 80.0 weight % polyimide resin and 0.1 to 20.0 weight % polyfluorinated olefin resin is compression molded to form a green compact, and then heated and baked. A method for producing a polyimide resin molded article.
含有してなる請求項（１）記載のポリイミド樹脂成形品
の製造方法。(2) The method for producing a polyimide resin molded article according to claim (1), wherein the polyimide resin contains 10 to 60% by weight of a filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2334635A JPH0694170B2 (en) | 1990-11-30 | 1990-11-30 | Method for manufacturing polyimide resin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2334635A JPH0694170B2 (en) | 1990-11-30 | 1990-11-30 | Method for manufacturing polyimide resin molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04201433A true JPH04201433A (en) | 1992-07-22 |
| JPH0694170B2 JPH0694170B2 (en) | 1994-11-24 |
Family
ID=18279583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2334635A Expired - Fee Related JPH0694170B2 (en) | 1990-11-30 | 1990-11-30 | Method for manufacturing polyimide resin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0694170B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006232996A (en) * | 2005-02-24 | 2006-09-07 | Toray Ind Inc | Polyimide resin molding material, molded product using it, polyimide material recycling method |
| JP2007514834A (en) * | 2003-12-19 | 2007-06-07 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Heat-resistant resin blend suitable for secondary processing using powder metal or compression molding technology |
| WO2007078948A1 (en) * | 2005-12-30 | 2007-07-12 | Saint-Gobain Ceramics & Plastics, Inc. | Composite material |
| US7476339B2 (en) | 2006-08-18 | 2009-01-13 | Saint-Gobain Ceramics & Plastics, Inc. | Highly filled thermoplastic composites |
| US8496825B1 (en) | 2010-10-26 | 2013-07-30 | Dow Global Technologies Llc | Spiral wound module including membrane sheet with regions having different permeabilities |
| US8661648B2 (en) | 2010-03-24 | 2014-03-04 | Dow Global Technologies Llc | Spiral wound filtration module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS495737A (en) * | 1972-04-28 | 1974-01-18 | ||
| JPS49125462A (en) * | 1973-04-03 | 1974-11-30 | ||
| JPS6153357A (en) * | 1984-08-22 | 1986-03-17 | Toray Ind Inc | Molding resin composition |
| JPS61250030A (en) * | 1985-04-26 | 1986-11-07 | イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー | Polyimide molding resin and molded product |
| JPH0218420A (en) * | 1988-07-06 | 1990-01-22 | Toray Ind Inc | Production of spherical polyimide powder |
-
1990
- 1990-11-30 JP JP2334635A patent/JPH0694170B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS495737A (en) * | 1972-04-28 | 1974-01-18 | ||
| JPS49125462A (en) * | 1973-04-03 | 1974-11-30 | ||
| JPS6153357A (en) * | 1984-08-22 | 1986-03-17 | Toray Ind Inc | Molding resin composition |
| JPS61250030A (en) * | 1985-04-26 | 1986-11-07 | イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー | Polyimide molding resin and molded product |
| JPH0218420A (en) * | 1988-07-06 | 1990-01-22 | Toray Ind Inc | Production of spherical polyimide powder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007514834A (en) * | 2003-12-19 | 2007-06-07 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Heat-resistant resin blend suitable for secondary processing using powder metal or compression molding technology |
| JP2006232996A (en) * | 2005-02-24 | 2006-09-07 | Toray Ind Inc | Polyimide resin molding material, molded product using it, polyimide material recycling method |
| WO2007078948A1 (en) * | 2005-12-30 | 2007-07-12 | Saint-Gobain Ceramics & Plastics, Inc. | Composite material |
| US7476339B2 (en) | 2006-08-18 | 2009-01-13 | Saint-Gobain Ceramics & Plastics, Inc. | Highly filled thermoplastic composites |
| US8661648B2 (en) | 2010-03-24 | 2014-03-04 | Dow Global Technologies Llc | Spiral wound filtration module |
| US8991027B2 (en) | 2010-03-24 | 2015-03-31 | Dow Global Technologies Llc | Spiral wound filtration module |
| US8496825B1 (en) | 2010-10-26 | 2013-07-30 | Dow Global Technologies Llc | Spiral wound module including membrane sheet with regions having different permeabilities |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0694170B2 (en) | 1994-11-24 |
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