JPS6227338A - Production of whisker preform for fiber reinforcing material - Google Patents
Production of whisker preform for fiber reinforcing materialInfo
- Publication number
- JPS6227338A JPS6227338A JP16294185A JP16294185A JPS6227338A JP S6227338 A JPS6227338 A JP S6227338A JP 16294185 A JP16294185 A JP 16294185A JP 16294185 A JP16294185 A JP 16294185A JP S6227338 A JPS6227338 A JP S6227338A
- Authority
- JP
- Japan
- Prior art keywords
- whisker
- liquid
- dispersion medium
- whiskers
- assemblages
- 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
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
L]ユJどU止立ユ
イの内部に溶融金属、溶融状樹脂を浸透せしめて繊維強
化材を得るウィスカー予備成形体(プリフォーム)の)
BB方法に関するbのである。[Detailed Description of the Invention] L] Whisker preform (preform) for obtaining fiber reinforced material by infiltrating molten metal and molten resin into the inside of the yup.
This is about the BB method.
、−′へおよびそのIJ″(1−
ウィスカーは、還元、熱気の凝集、溶液からの析出等に
よって成長形成された良さ数cm以下、直径1〜10μ
程度の針状結晶体であって、高い強度、弾性係数を有し
ており、金属、樹脂用複合強化材として有効に使用され
る。浸透法を利用して、母材である金属、樹脂とウィス
カーを複合化させるには、圧縮成形したウィスカー集合
体である予備成形体を不動に保持して、その内部に、溶
融させた用材を十分に浸透させなりればなら4丁い、そ
の場合、ウィスカーが局部的に密に絡み合っていると、
その部分には母材が浸透し動く、また浸透したとしても
該ウィスカー凝集部が介在物として1fljぎ、所望強
度の成品を得ることができない3、還元法等で形成され
たウィスカー生成物は、密に絡み合っており、この絡み
を−DNさほぐさ4jければ、均質な予備成形体を得る
ことはできず、該均質な予備成形体を得るための手法と
して、ウィスカー生成体を、水、アルコール、アセトン
、エーテル等の分散媒体液中に加えて、撹拌分散せしめ
、次いで篩を通過させることにより、分散されずに残っ
ている塊状のウィスカー生成物を分散媒体液から除去し
、さらに濾過体を用い(固液分離させ、分離された湿潤
ウィスカー集合体を、圧縮し、」[たけ圧縮t!fに(
を燥させる方法が知られている。, -' and its IJ'' (1- Whiskers are less than a few cm in length and 1 to 10 μm in diameter, grown by reduction, coagulation of hot air, precipitation from solution, etc.)
It is a needle-like crystal with high strength and elastic modulus, and is effectively used as a composite reinforcing material for metals and resins. In order to composite the base metal or resin with the whiskers using the infiltration method, the preform, which is an aggregate of compression-molded whiskers, is held immovably, and the molten material is placed inside it. If sufficient penetration is required, four whiskers are required.In that case, if the whiskers are closely intertwined locally,
The base material penetrates and moves in that part, and even if it penetrates, the whisker agglomerated part will remain as an inclusion, making it impossible to obtain a product with the desired strength3.The whisker product formed by reduction method etc. They are tightly intertwined, and it is not possible to obtain a homogeneous preform by unraveling these tangles with -DN. As a method for obtaining the homogeneous preform, the whisker forming product is mixed with water, alcohol, etc. , acetone, ether, etc., stirred and dispersed, and then passed through a sieve to remove lump-like whisker products remaining undispersed from the dispersion medium, and then pass through a filter. Using (solid-liquid separation, the separated wet whisker aggregate is compressed,
There are known methods of drying.
どころが、この方法では、分散媒体液の粘性が不足づる
と濾過体に」;る固液分1’sIfを行う際に、ウィス
カーの沈陪速痕が人さ過さ゛、局部的に凝集(繊維体積
(?、が11に人さくなること)が生じC1均一・<’
X休体率のウィスカー集合体を1!することはでさない
。However, in this method, if the viscosity of the dispersion medium is insufficient, when performing the solid-liquid separation 1'sIf, the sedimentation speed traces of the whiskers are too much and local flocculation ( The fiber volume (?, decreases to 11) occurs and C1 is uniform/<'
1 whisker aggregate with X rest rate! There's nothing I can do.
肛豆謔を7ノ1するための二 〇(13J:び−用本発
明の目的は、その繊維体積率(Vr )が均一なウィス
ノJ−TZ備成形体を提供し、もって健全な’LA Y
’iの高強度繊維強化(Δをij?る点にある。The object of the present invention is to provide a molded article with Wisno J-TZ whose fiber volume fraction (Vr) is uniform, thereby achieving a healthy LA. Y
'i high strength fiber reinforcement (at the point where Δ is ij?).
この目的は、ウィスカー生成物を、多hffiアルコー
ル、またはその水溶液中に分散させ、次いで篩を通過さ
せることにより、塊状のつ(スカー生成物を該分散媒体
液から除去し、さらに濾過体を用いC固液分1研させ、
分列された湿潤ウィスカー集合体を、圧縮し、または、
圧縮せずに乾燥さけることによって達成される。The purpose is to remove the bulky whisker products from the dispersion medium by dispersing them in a multi-hffi alcohol, or an aqueous solution thereof, and then passing them through a sieve, and then by using a filter. C. Grind the solid-liquid portion 1,
compressing the sorted wet whisker aggregate, or
This is achieved by avoiding drying without compaction.
ウィスカー生成物を分散さけるべさ分散媒体液としては
、水、エチルアルコール、アセトン、またはそれ等の水
溶液が知られている。しかしながら、水の粘度は1.0
05cP (t?ンヂボアズ)、エチルアルコールの粘
度は1.19cP 、アセ1〜ンの粘度は0.322c
Pであって、1分低く、それ智を分散媒体液として用い
た場合には、均一な繊維体積率(Vf)のウィスカー集
合体を19ることができない。S尤Cウィスカーに関す
る本f1発明者等の試験の結果によれば、分散91.体
液の粘度が20℃にd3いて、2CP未満であると、ウ
ィスカーの沈降速度が大きく、局部的な画集が生じ、2
0cPを越えると、分散媒体液中にウィスカーを投入し
て撹拌してb、ウィスカーの絡みがほぐれず、粘度範囲
2〜20cP(於20°C)の分散媒体液が適当である
ことが判明した。Water, ethyl alcohol, acetone, or aqueous solutions thereof are known as the dispersion medium for dispersing whisker products. However, the viscosity of water is 1.0
The viscosity of ethyl alcohol is 1.19 cP, and the viscosity of acetic acid is 0.322 cP.
When P is 1 minute lower and P is used as a dispersion medium, it is not possible to form a whisker aggregate with a uniform fiber volume fraction (Vf). According to the results of tests conducted by the inventors of this f1 on S-C whiskers, the dispersion was 91. If the viscosity of the body fluid is d3 at 20°C and less than 2CP, the sedimentation rate of the whiskers will be high and local collection will occur.
When it exceeds 0 cP, the whiskers cannot be untangled by adding the whiskers into the dispersion medium and stirring, and it was found that a dispersion medium with a viscosity range of 2 to 20 cP (at 20°C) is appropriate. .
この条件を満たず分散媒体液は、多面アルコール、また
はその水溶液であって、例えば、エブレン・グリコール
50申吊%水溶液の粘度は3.14cP(於20’C)
、プロピレン・アルコール40中温%水溶液ノ粘度ハ1
0.0(:P (於20℃)、リヒリ:z50jfi1
%水溶液の粘度は6.05cP (於20℃)である
。もっとし、粘性条件だtノで、分散媒体液を選択する
こと(よできず、ウィスカーとの濡れ竹が良好であると
とらに、湿潤状態のウィスカー集合体を乾燥させてウィ
スカー予備成形体を得る際に残漬が生じではならイtい
。この意味で、パラフィン系炭化水泰を使用することは
できない。If this condition is not met, the dispersion medium liquid is a polyhedral alcohol or its aqueous solution. For example, the viscosity of a 50% aqueous solution of Eblen glycol is 3.14 cP (at 20'C).
, viscosity of propylene alcohol 40 medium temperature aqueous solution H1
0.0(:P (at 20℃), Lihiri:z50jfi1
% aqueous solution is 6.05 cP (at 20°C). In addition, the dispersion medium liquid should be selected based on the viscosity conditions (if the wetness with the whiskers is good), the wet whisker aggregate should be dried to form a whisker preform. It is difficult to avoid leaving residue during the preparation.In this sense, paraffinic hydrocarbon water cannot be used.
また、本発明で使用するウィスカーは、前記S、1.C
製の曲、△夕203製、S尤3N4製、黒鉛t′i等で
あって、直径01・〜1μrn 、艮ざ50〜200μ
mのらのが適当である。ウィスカーに対ヂる分散媒体液
の使用化は、撹拌混合づ−る際のウィスカー均一分散を
tするために、(ウィスカー/分散媒体液)−約1/1
0(iEfil比)なる条イ′1を満たず様にするのが
好ましく、該干M比を下回ると、撹11′によってしウ
ィスカーの絡みが(まぐれ難くなり、該Φ不化を上回る
と、分1りしたウィスノJ−の凝集が生ずる傾向となる
。Further, the whiskers used in the present invention include the above-mentioned S, 1. C
Made of △Yu203, S3N4, graphite t'i, etc., diameter 01.~1μrn, width 50~200μ.
m no ra is suitable. The use of a dispersion medium liquid for whiskers is such that (whiskers/dispersion medium liquid) - approximately 1/1 is used to ensure uniform dispersion of whiskers during stirring and mixing.
0 (iEfil ratio) is preferable, and if the ratio is less than the iEfil ratio, the whiskers become entangled due to the stirring 11', and if it exceeds the Φ-inhibition, There is a tendency for agglomeration of small Wisno J- to occur.
分散媒体液中にウィスカーを投入し、撹拌、北合してウ
ィスカーを均一に分散させた後には、第1図図示の如く
、a合液10を、100〜200メツシユのポリアミド
(商品名:ナイロン)布製第一篩22および100〜2
00メツシユのステンレス鋼繊維製第二篩24よりなる
篩20を通過させて、容器26内に注ぎ、この操作によ
って、絡みのほぐれないウィスカー塊状体12を除去す
る。ここで、篩20の網目寸法を100〜200メツシ
ユに規定した理由は、100メツシュ未満であると、ウ
ィスカー塊状体が通過してしまい、200メツシユを越
えると、ウィスカーを含む分散媒体液の通過11.′1
間が艮り1.1′す、処理能率が低下するからである。After the whiskers are added to the dispersion medium liquid, stirred and mixed to uniformly disperse the whiskers, as shown in Fig. ) Cloth first sieve 22 and 100-2
It is passed through a sieve 20 consisting of a second sieve 24 made of stainless steel fibers of 0.00 mesh and poured into a container 26, thereby removing untangled whisker lumps 12. Here, the reason why the mesh size of the sieve 20 is specified to be 100 to 200 meshes is that if the mesh size is less than 100 meshes, whisker aggregates will pass through, and if it exceeds 200 meshes, the dispersion medium liquid containing whiskers will pass through. .. '1
This is because the processing efficiency decreases as the processing time increases by 1.1'.
次に、容器26内の精製された混合液14を、多数の小
穴が形成された鋼板上に、下から順次、ステンレス鋼製
網体、ポリアミドfli、濾紙を積Fi?iさせた濾過
体28(ガラスフィルターでも可)を備え、真空ポンプ
Pに接続された真空吸引槽30内に注ぎ、真空ポンプP
を作動さUて固液分離を行い、湿潤ウィスカー集合体4
0を冑る(第2図参照)。次いで、必要ならば、IL3
終成品である繊維強化祠の繊維体積率(Vt )に応じ
て、圧縮用ビス1−ン32をもって湿潤ウィスカー集合
体40を圧縮し、該集合体40に自由4r状態で撮動を
与えて、濾過体28から該集合体40を切り離′J。Next, the purified mixed liquid 14 in the container 26 is placed on a steel plate with a large number of small holes formed thereon, and sequentially from the bottom, a stainless steel net, a polyamide film, and a filter paper are stacked. It is equipped with a filter body 28 (a glass filter may also be used) and is poured into a vacuum suction tank 30 connected to a vacuum pump P.
is operated to perform solid-liquid separation, and wet whisker aggregate 4
0 (see Figure 2). Then, if necessary, IL3
The wet whisker aggregate 40 is compressed using the compression screw 1-32 according to the fiber volume fraction (Vt) of the fiber-reinforced grain that is the final product, and the aggregate 40 is subjected to imaging in a free 4r state. , the assembly 40 is separated from the filter body 28'J.
濾過体28から分離した湿潤ライス万一集合体40は、
これを乾燥炉で乾燥させてウィスカー予備成形体となし
、例えば、Ill、NILcJ合金、A −Q 。The wet rice aggregate 40 separated from the filter body 28 is
This is dried in a drying oven to obtain a whisker preform, such as Ill, NILcJ alloy, A-Q.
へ夕合金笠を用いて、高圧凝固鋳造法にて該つ°イスカ
ー子協成形体と複合化させ、内燃機関用部品であるロッ
カー・アーム、弁ぽh保持体(バルブスプリング・リデ
ーナー)等を1!□?ることがでさる。Using the heat sink, it is composited with the corresponding Iscar molded body using the high-pressure solidification casting method to produce internal combustion engine parts such as rocker arms and valve spring retainers. 1! □? It is possible to do that.
該Ia終成品の1!帷体積率(Vf)は、5へ・30゛
%である。1 of the Ia finished products! The veil volume ratio (Vf) is 5.30%.
左」し1
(1)実施例:直径0.2−0.5μm、長さ50〜2
00mmのS=Cウィスカー31grを、エチーレン・
グリコール18Q gr、水120 grよりなる分散
媒体液に投入し、撹拌装置を用いて、1回30秒間の撹
拌を3回繰り返した(殺、その混合液を、第1図図示の
如く、200メツシユのポリアミド布製第一篩22.1
50メツシユのステンレス!II繊維製第二篩24にり
なる篩20を通過させて、容器26内に注ぎ、第2図図
示の姐さ7.’14′吸引式瀘過装置を用いて18x
18x 180mmの湿潤ウィスカー集合体を形成し、
これを圧力110〜150に!j/ctiで圧縮した(
な、ウィスカー子猫成形体を得た。Left side 1 (1) Example: diameter 0.2-0.5 μm, length 50-2
00mm S=C whisker 31gr with Ethylene.
The mixture was poured into a dispersion medium solution consisting of glycol 18Q gr and water 120 gr, and stirred for 30 seconds each time using a stirring device three times. Polyamide cloth first sieve 22.1
50 mesh stainless steel! It is passed through a sieve 20, which is a second sieve 24 made of II fiber, and poured into a container 26, and then the second sieve 7 as shown in FIG. 18x using '14' suction filtration device
forming a wet whisker mass of 18 x 180 mm;
Make this pressure 110-150! Compressed with j/cti (
Well, I got a whisker kitten molded object.
このウィスカー子1iv成形体を、1−汗)V固易造法
にて、JIS AC4D材と複合化さけ一1Vr=20
″)6の試験材とした。This whisker child 1iv molded body was composited with JIS AC4D material using the 1-V solid manufacturing method.1Vr=20
″)6 was used as the test material.
(2)比較例:実施例のものど同一のSλCウィスカー
を、従来法ににり水中に分散さけた後、圧搾にJ、り水
抜きを行って湿潤ウィスカー集合体になし、次いで圧力
110〜1508g/cmにて該集合体を圧縮した後、
乾燥炉で乾燥さU、ウィスカー予備成形体を17だ。(2) Comparative example: The same SλC whiskers as in the example were dispersed in water according to the conventional method, and then compressed to remove water to form a wet whisker aggregate, and then under pressure of 110~ After compressing the aggregate at 1508 g/cm,
Dry the whisker preform in a drying oven for 17 hours.
このウィスカー子猫成形体を、高圧凝固iJ Ju法に
て、JIS AC4D材とm合化さけ、Vr =20%
の試験材どした。This whisker kitten molded body was merged with JIS AC4D material by high pressure coagulation iJ Ju method, Vr = 20%.
What happened to the test material?
次に、実施例試験材、比較例試験材の各々につき、引張
り強さくKg/rnIn2)、弾性率(Ky/m1n2
)、伸び(%)を調べ、その結果を表1に示した。Next, for each of the example test material and comparative example test material, tensile strength Kg/rnIn2) and elastic modulus (Ky/m1n2
) and elongation (%) were investigated, and the results are shown in Table 1.
表1
く評価〉
本発明例試験月と比較例試験材とは、繊維体積率(Vf
)が17しく、同材質でありながら、本発明例試験祠
の引張り強さ、弾性率が大きく向上し、特に伸び(%)
の増大が顕茗である。斯様に太きな特性差が4[じた原
因は、本発明例試験祠にお【jるSλCウィスカーの分
散が十分均一に行われ、かつ局部的に凝集したS尤Cウ
ィスカーが(j ([Lないためである。Table 1 Evaluation> The test month of the present invention example and the comparative example test material are the fiber volume fraction (Vf
) is 17%, and although the material is the same, the tensile strength and elastic modulus of the test shrine of the present invention are greatly improved, especially the elongation (%)
The increase in this is significant. The reason for such a large characteristic difference is that the dispersion of the SλC whiskers in the test shrine of the present invention example was sufficiently uniform, and the locally aggregated SλC whiskers were (This is because there is no [L.
1班豊朶盟
以上の説明から明らかな様に本発明では、ウィスカー生
成物を、多価アルコール、またはその水溶液より成る分
散媒体液中に分散さけ、次いでflliiを通過させる
ことにより、晩秋のウィスカー生成物を該分散媒体液か
ら除去し、さらに濾過体を用いて固液分列ざU、分離さ
れた湿潤ウィスカー集合体を、圧縮し、または、圧縮t
!ずに;を燥さゼてウィスカー予備成形体を形成する力
演を採用したため、局部的凝集のない均−繊麗体積串の
ウィスカー予備成形体が得られ、該ウィスカー子猫成形
体を金属、または樹脂に複合化させることにJ:す、優
れた機械的特性を右する楳維強化祠を冑ることがでさる
。As is clear from the above description, in the present invention, the whisker product is dispersed in a dispersion medium consisting of a polyhydric alcohol or an aqueous solution thereof, and then passed through a fl.i. The product is removed from the dispersion medium liquid, and the separated wet whisker aggregate is compressed or subjected to solid-liquid separation using a filter.
! By employing a method of forming a whisker preform by drying the whisker preform, it is possible to obtain a whisker preform with a uniform and fine volume without local agglomeration. By combining it with a resin, it is possible to obtain a fiber-reinforced structure that provides excellent mechanical properties.
第1図はウィスカーを分散させた分散媒体液を篩を用い
て精製する状態を承り概略図、第2図は該精製後の分散
媒体液を固液分離するための真空吸引式濾過装置を示す
概略図である。
1o・・・混合液、12・・・塊状体、14・・・混合
液、20・・・篩、22・・・ポリアミド布製第一篩、
24・・・ステンレス鋼繊維製第二篩、26・・・容器
、28・・・濾過体、30・・・貞空吸引槽、32・・
・Ff縮出用ピストン40・・・湿趙ウィスカー集合体
、P・・・真空ポンプ。Figure 1 is a schematic diagram of a state in which a dispersion medium liquid in which whiskers are dispersed is purified using a sieve, and Figure 2 shows a vacuum suction type filtration device for separating solid and liquid from the purified dispersion medium liquid. It is a schematic diagram. 1o...Mixed liquid, 12...Agglomerates, 14...Mixed liquid, 20...Sieve, 22...First sieve made of polyamide cloth,
24... Stainless steel fiber second sieve, 26... Container, 28... Filter body, 30... Pure air suction tank, 32...
-Ff compression piston 40...wet whisker aggregate, P...vacuum pump.
Claims (1)
を通過させることにより、塊状のウィスカー生成物を該
分散媒体液から除去し、さらに濾過体を用いて固液分離
させ、分離された湿潤ウィスカー集合体を、圧縮し、ま
たは圧縮せずに乾燥させる繊維強化材用ウィスカー予備
成形体の製造方法において、 前記分散媒体液が、多価アルコール、またはその水溶液
であることを特徴とする特徴とする繊維強化材用ウィス
カー予備成形体の製造方法。[Claims] The whisker product is dispersed in a dispersion medium liquid, and then the lumpy whisker product is removed from the dispersion medium liquid by passing through a sieve, and the solid-liquid separation is further performed using a filter. , a method for producing a whisker preform for fiber reinforcing material in which a separated wet whisker aggregate is compressed or dried without being compressed, wherein the dispersion medium liquid is a polyhydric alcohol or an aqueous solution thereof. Characteristics: A method for producing a whisker preform for fiber reinforced material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16294185A JPS6227338A (en) | 1985-07-25 | 1985-07-25 | Production of whisker preform for fiber reinforcing material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16294185A JPS6227338A (en) | 1985-07-25 | 1985-07-25 | Production of whisker preform for fiber reinforcing material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6227338A true JPS6227338A (en) | 1987-02-05 |
Family
ID=15764158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16294185A Pending JPS6227338A (en) | 1985-07-25 | 1985-07-25 | Production of whisker preform for fiber reinforcing material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6227338A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100883434B1 (en) | 2007-12-27 | 2009-02-11 | 부산대학교 산학협력단 | Menufacturing method and it's apparatus for thermal-pressurization mold of whisker-type preform at metal matrix composite method |
US7941045B2 (en) | 2008-10-30 | 2011-05-10 | Panasonic Corporation | Camera body, interchangeable lens unit, and imaging apparatus |
-
1985
- 1985-07-25 JP JP16294185A patent/JPS6227338A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100883434B1 (en) | 2007-12-27 | 2009-02-11 | 부산대학교 산학협력단 | Menufacturing method and it's apparatus for thermal-pressurization mold of whisker-type preform at metal matrix composite method |
US7941045B2 (en) | 2008-10-30 | 2011-05-10 | Panasonic Corporation | Camera body, interchangeable lens unit, and imaging apparatus |
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