JPH03179035A - Molding material and its mixture - Google Patents
Molding material and its mixtureInfo
- Publication number
- JPH03179035A JPH03179035A JP31769689A JP31769689A JPH03179035A JP H03179035 A JPH03179035 A JP H03179035A JP 31769689 A JP31769689 A JP 31769689A JP 31769689 A JP31769689 A JP 31769689A JP H03179035 A JPH03179035 A JP H03179035A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- molding material
- nylon
- fiber
- molding
- 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
- 239000012778 molding material Substances 0.000 title claims abstract description 73
- 239000000203 mixture Substances 0.000 title description 15
- 239000000835 fiber Substances 0.000 claims abstract description 85
- 229920005989 resin Polymers 0.000 claims abstract description 62
- 239000011347 resin Substances 0.000 claims abstract description 62
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 52
- 239000000155 melt Substances 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 239000012779 reinforcing material Substances 0.000 claims description 19
- 238000000465 moulding Methods 0.000 abstract description 13
- 230000002787 reinforcement Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 239000003365 glass fiber Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 238000001746 injection moulding Methods 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 5
- 238000000748 compression moulding Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 101100208721 Mus musculus Usp5 gene Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は成形材料およびそのｌ昆合物に関し、詳しくは
射出成形、押出成形、圧縮成形等に使用され、成形時の
分散性が良好であって、繊維の破断が少なく、機ｖＡ強
度が大幅に向上した成形品を提供し得る成形材料および
その混合物に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a molding material and its mixture, and more specifically, it is used in injection molding, extrusion molding, compression molding, etc., and has good dispersibility during molding. The present invention relates to a molding material and a mixture thereof that can provide a molded product with less fiber breakage and significantly improved machine vA strength.
従来、繊維によって強化された樹脂組成物の製造方法と
しては、次の二つに大別される。Conventionally, methods for producing fiber-reinforced resin compositions can be roughly divided into the following two types.
■その一つの方法は、ナイロン６樹脂に例えば３＋ｎｎ
＋程度の長さのガラス繊維をトライブレンドしてトライ
ブレンド物を作り、これを押出機で混練・造粒等してベ
レットにする方法である。■One method is to use nylon 6 resin, for example, 3+nn.
This is a method of tri-blending glass fibers with a length of approximately + to create a tri-blend product, which is then kneaded and granulated using an extruder to form pellets.
■他の一つの方法は、ガラス繊維等の連続体をダイス穿
孔内に通し、押出機で溶融したナイロン６樹脂を上記ダ
イス穿孔内に導き、前記繊維策を被覆し、冷却後一定長
に切断して円筒状の成形材料を得る方法である。■Another method is to pass a continuous body such as glass fiber through a die hole, introduce nylon 6 resin melted by an extruder into the die hole, cover the fiber, and cut it into a certain length after cooling. This is a method to obtain a cylindrical molding material.
上記のように得られた成形材料のガラス繊維の充填率は
、■前者の場合、混練時の繊維の分散性の間むから通常
３０重量％が上限とされていた。又■後者の場合もダイ
ス穿孔内での繊維引き抜き抵抗の問題から通常が４０重
量％が上限とされている。In the former case, the upper limit of the glass fiber filling rate of the molding material obtained as described above has usually been set at 30% by weight because of the difficulty in dispersing the fibers during kneading. Also in the latter case, the upper limit is usually set at 40% by weight due to the problem of resistance to pulling out the fibers within the die hole.
従って、これ以上の高充填率の成形材料を得ることがで
きないというｔ！！！題があった。Therefore, it is impossible to obtain a molding material with a higher filling rate than this. ! ! There was a problem.
また従来、成形材料に用いられる樹脂は成形後の成形品
の物性を考慮して一般に高分子量、即ち低いメルトフロ
レート（以下、ｒＭＦＲＪと略記する）を有しており、
このための前者の場合には混練時に押出機内バレルとス
クリューとの間で発生する剪断力のために繊維の破断が
起こり、得られる成形材料中の平均繊維長は０．３〜０
．５０１１１１と短くなる課題があった。Furthermore, conventionally, resins used as molding materials generally have a high molecular weight, that is, a low melt fluororate (hereinafter abbreviated as rMFRJ), in consideration of the physical properties of the molded product after molding.
In the former case, the fibers break due to the shearing force generated between the extruder barrel and screw during kneading, and the average fiber length in the resulting molding material is 0.3 to 0.
．． There was an issue where the number was shortened to 501,111.
一方■後者の場合においても成形材料中の繊維長さは、
成形材料のそれと同一であり、長く保たれているものの
、上記低ＭＦＲであること並びに成形材料の形状が一般
に円筒であり、単位重量当りの成形材料の表面積、即ち
比表面積が小さくて押出機供給ゾーンにおけるナイロン
６樹脂の可塑化に時間を要するため、成形時に繊維が破
断して成形品中の平均繊維が０．３〜０．５肋と短くな
るばかりでなく、繊維の分散不良という課題も生じる。On the other hand, even in the latter case, the fiber length in the molding material is
Although it is the same as that of the molding material and is maintained for a long time, it has the above-mentioned low MFR, and the shape of the molding material is generally cylindrical, and the surface area of the molding material per unit weight, that is, the specific surface area is small, so it is difficult to feed it to an extruder. Because it takes time to plasticize the nylon 6 resin in the zone, the fibers break during molding, which not only shortens the average fiber in the molded product to 0.3 to 0.5 ribs, but also causes the problem of poor fiber dispersion. arise.
以上にように従来技術では、繊維の充填率、破損、分散
性の面から繊維の補強効果を十分に発揮し得ないという
ｉ１％題があった。As described above, the conventional technology has the i1% problem of not being able to fully demonstrate the reinforcing effect of fibers in terms of fiber filling rate, breakage, and dispersibility.
そこで、本発明の目的は、繊維補強材を高濃度に充填し
ているにも拘らず、成形時の繊維分散性が良好であり、
繊維の破断が少なく、繊維強度が大幅に向上した成形品
が得られる成形材料およびその混合物を提供することに
ある。Therefore, the object of the present invention is to achieve good fiber dispersibility during molding despite being filled with a high concentration of fiber reinforcing material.
It is an object of the present invention to provide a molding material and a mixture thereof that allow a molded article with less fiber breakage and significantly improved fiber strength to be obtained.
本発明者は上記課題を解決すべく鋭意検討した結果、成
形時に押出機内で発生する繊維分散不良、あるいは繊維
破断の課題は成形材料中の樹脂のＭＦＲ及び比表面積と
密接な関係にあり、またこれらの肝Ｒ及び比表面積の一
定条件を満足するように設定することにより、成形品の
物性を損なうことなく、成形時の繊維分散性が良好であ
り、繊維の破断が少なく、機械強度が大幅に向上するこ
とを見出し、本発明を完成するに至ったものである。As a result of intensive studies to solve the above problems, the present inventor found that the problem of poor fiber dispersion or fiber breakage that occurs in the extruder during molding is closely related to the MFR and specific surface area of the resin in the molding material. By setting the R and specific surface area to satisfy certain conditions, fiber dispersibility during molding is good, fiber breakage is small, and mechanical strength is significantly increased without impairing the physical properties of the molded product. The present invention has been completed based on the discovery that the present invention can be improved.
即ち、本発明に係る成形材料は、単繊維（フィラメント
）から横取される繊維状補強材がナイロン６樹脂によっ
て被覆され、且つ該ナイロン６樹脂が繊維状補強材中に
含浸されている構成の板状体を得、前記繊維状補強材が
充填されている該板状体を切断して得られる成形材料に
おいて、（ｉ）該成形材料に対する繊維状補強材の充填
率が５０重量％以上９０重量％以下、
（ｉｔ）該繊維状補強材の長さが１〜３０閤、（ｉｉｉ
）該板状体の少なくとも一辺が１鋪以下、（ｉｖ ）
該成形材料の比表面積が２０ｃｍ” ／ ｇ以上（ｖ）
該ナイロン６樹脂のＭＦＲがＪＩＳ Ｋ Ｔ２１０に基
づき試験温度２３５°Ｃ１試験荷重２．１６ｋｇｆの条
件で測定した時に２０ ｇ ／１０分以上１００ｇ／１
０分以下であることを特徴とする。That is, the molding material according to the present invention has a structure in which a fibrous reinforcing material taken from a single fiber (filament) is covered with nylon 6 resin, and the nylon 6 resin is impregnated into the fibrous reinforcing material. In the molding material obtained by obtaining a plate-shaped body and cutting the plate-shaped body filled with the fibrous reinforcing material, (i) the filling rate of the fibrous reinforcing material with respect to the molding material is 50% by weight or more and 90% by weight; % by weight or less, (it) the length of the fibrous reinforcement is 1 to 30 kg, (iii
) At least one side of the plate-like body is 1 square or less, (iv)
The specific surface area of the molding material is 20 cm”/g or more (v)
The MFR of the nylon 6 resin is 20 g/10 minutes or more 100 g/1 when measured at a test temperature of 235°C and a test load of 2.16 kgf based on JIS K T210.
It is characterized by being 0 minutes or less.
また本発明に係わる成形材料混合物は、上記の成形材料
と繊維未強化ナイロン６樹脂とからなり、該繊維未強化
ナイロン６樹脂のＭＦＲが前記成形材料であるナイロン
６樹脂のＭＦＲの０．０５〜１倍（同一条件下で測定）
であることを特徴とする。Further, the molding material mixture according to the present invention comprises the above-mentioned molding material and an unreinforced fiber-reinforced nylon 6 resin, and the MFR of the unreinforced fiber-reinforced nylon 6 resin is 0.05 to 0.05 of the MFR of the nylon 6 resin which is the molding material. 1x (measured under the same conditions)
It is characterized by
以下、本発明について詳説する。The present invention will be explained in detail below.
始めに、本発明の成形材料の一例を第１図及び第２図に
基き説明する。同図において、２０は成形材料、２１は
ナイロン６樹脂、２２は単繊維である。First, an example of the molding material of the present invention will be explained based on FIGS. 1 and 2. In the figure, 20 is a molding material, 21 is a nylon 6 resin, and 22 is a single fiber.
Ｌは成形材料の長さ、即ち繊維長であり、１．０〜３０
ｍである。１．０ｍ未満では繊維長が短く十分な補強効
果が得られず、逆に３０−を越えるとホッパー内でブリ
ッジ化等を引き起こし成形が困難となるので好ましくな
い。L is the length of the molding material, that is, the fiber length, and is 1.0 to 30
It is m. If the fiber length is less than 1.0 m, the fiber length is short and a sufficient reinforcing effect cannot be obtained, whereas if it exceeds 30 m, bridging etc. occur in the hopper, making molding difficult, which is not preferable.
Ｗ及び１１は各々成形材料の幅及び厚さであり、次式の
比表面積が一定値以上になるように決定される。W and 11 are the width and thickness of the molding material, respectively, and are determined so that the specific surface area of the following formula is greater than or equal to a certain value.
２ ［ＬＸｌｌ＋ＷＸ（Ｌ＋８））
ＬＸ阿 ＸＩＩＸＰ
式中Ｌ；威成形料の長さ（ｃｍ）
ｍ：成形材料の輻 （ｃｍ）
Ｉト：成形材料の厚さ（ｃｍ）
Ｐ：成形材料の比重（ｇ／ｃｏり
なお、幅と厚さの内、少なくとも一方を１ 、０ ｍｍ
以下、好ましくは０．５間未満とすることは比表面積を
大きく設定する上で好ましい。2 [LXll+WX(L+8)) LXA XIIXP Where L: Length of molding material (cm) m: Radius of molding material (cm) I: Thickness of molding material (cm) P: Specific gravity of molding material ( g/co, at least one of the width and thickness is 1.0 mm
Hereinafter, it is preferable to set the specific surface area to be less than 0.5 in order to set a large specific surface area.
本発明において、比表面積は２０ｃｉｔ ／ ｇ以上、
好ましくは３０ｃ績／ｇ、より好ましくは４０ｃＪ／ｇ
以上である。比表面積が２０ｃＪ／ｇ未満では射出成形
や押出成形等の成形時に、押出機内において成形材料中
のナイロン６樹脂が溶融状態となる迄に長時間を要し、
押出機供給ゾーンにおいて、繊維分散不良、繊維破断等
の問題が起こり好ましくない。In the present invention, the specific surface area is 20 cit/g or more,
Preferably 30c/g, more preferably 40cJ/g
That's all. If the specific surface area is less than 20 cJ/g, it will take a long time for the nylon 6 resin in the molding material to become molten in the extruder during injection molding, extrusion molding, etc.
In the extruder supply zone, problems such as poor fiber dispersion and fiber breakage occur, which is undesirable.
尚、厚さ１１に関してはホッパー内分級、取扱い性の面
からは０．１ｍｍ以上に設定することが好ましい。Note that the thickness 11 is preferably set to 0.1 mm or more in terms of classification in the hopper and ease of handling.
本発明に用いられるナイロン６樹脂のＭＦＲは、ＪＩＳ
Ｋ ７２１０に基づき試験塩度２３５℃、試験荷重２
゜１６ ｋｇ ｆの条件（以下、「本発明の測定条件」
という）で測定した時に、２０ｇ／１０分以上１００ｇ
／１０分以下である。 １００ ｇ ／１０分を越える
と得られる成形品の機械強度が大巾に低下するため好ま
しくない。又２０ｇ／１０分未満では成形時の繊維分散
不良、繊維の破断が起こり繊維の補強効果を田なうので
好ましくない。なお一般にナイロン６樹脂のＭＦＲは本
発明の測定条件で測定した場合、５〜ｌｔｏ ｇ ／１
０分の範囲にある。即ら、本発明者は一般のＭＦＨの範
囲で、他の本発明の要件との関係で特定の？ＩＦＲの範
囲を見出したのである。The MFR of the nylon 6 resin used in the present invention is JIS
Based on K 7210, test salinity 235℃, test load 2
゜16 kg f conditions (hereinafter referred to as "measurement conditions of the present invention")
20g/100g for more than 10 minutes when measured at
/10 minutes or less. If it exceeds 100 g/10 minutes, the mechanical strength of the molded product obtained will decrease significantly, which is not preferable. Further, if it is less than 20 g/10 minutes, it is not preferable because it causes poor fiber dispersion and fiber breakage during molding, which impairs the reinforcing effect of the fibers. Generally, the MFR of nylon 6 resin is 5 to lto g/1 when measured under the measurement conditions of the present invention.
It is in the range of 0 minutes. That is, within the scope of the general MFH, the inventor has specified specific questions in relation to other requirements of the present invention. They discovered the range of IFR.
本発明に用いる繊維状Ｊ＋ｌｉ強材の柱頭としては、Ｅ
−ガラス、Ｓ−ガラス等のガラス繊維、ポリアクリルニ
トリル系、ピッチ系、レーヨン系等の炭素繊維、デュポ
ン社の「ケブラー」 （商標）に代表される芳香族ポリ
アミド繊維、日本カーボン社の「ニカロン」 （商標）
等の炭化ケイ素’＋６’ｉ維、金属繊維等が挙げられる
。これらの繊維状補強材は、単独或いは組合せて用いる
ことができる。The capital of the fibrous J+li reinforcement used in the present invention is E
-Glass fibers such as glass and S-glass, carbon fibers such as polyacrylonitrile, pitch, and rayon, aromatic polyamide fibers such as DuPont's "Kevlar" (trademark), Nippon Carbon's "Nicalon" ” (Trademark)
Examples include silicon carbide '+6'i fibers, metal fibers, etc. These fibrous reinforcing materials can be used alone or in combination.
本発明において繊維径は繊維の種類によっても異なるが
、例えばガラス繊維の場合、通常５〜２５μｍであるが
、ＲＩｉｉｉ：特性の面からは細い方が好ましい。また
繊維状補強材を表面処理することはナイロン６樹脂との
接着性の面から好ましく、例えばガラス繊維の場合、シ
ラン系、チクネート系カップリング剤で処理することは
特に好ましい。In the present invention, the fiber diameter varies depending on the type of fiber, but for example, in the case of glass fiber, it is usually 5 to 25 μm, but from the viewpoint of RIiii: characteristics, the smaller the diameter is, the better. In addition, it is preferable to surface-treat the fibrous reinforcing material from the viewpoint of adhesion with the nylon 6 resin. For example, in the case of glass fiber, it is particularly preferable to treat it with a silane-based or thicnate-based coupling agent.
本発明において成形材料中の繊維状補強剤の充填率は、
５０重量％以上９０重量％以下である。５０重量％未満
では本発明の効果である繊維の高充填化の特徴が発揮で
きず、また後述するマスターバッチとして用いる場合経
済性の面からみても好ましくない、一方、９０重景気を
越えると単繊維の表面をナイロン６樹脂で十分被覆する
ことができず好ましくない。In the present invention, the filling rate of the fibrous reinforcing agent in the molding material is
It is 50% by weight or more and 90% by weight or less. If it is less than 50% by weight, the characteristic of high fiber filling, which is the effect of the present invention, cannot be achieved, and it is also not preferable from an economic point of view when used as a masterbatch, which will be described later. This is not preferable because the surface of the fiber cannot be sufficiently covered with the nylon 6 resin.
本発明に係る成形材料は、単繊維（フィラメント）から
構成される繊維状′４１１ｉ強材が樹脂によって被覆さ
れ、且つ該ナイロン６樹脂が繊維状補強材中に含浸され
ているｔａ成の板状体を得、前記繊維状補強材が充填さ
れている該板状体を一定長に切断することにより得られ
る。The molding material according to the present invention is a plate-like material in which a fibrous '411i reinforcing material composed of single fibers (filaments) is covered with a resin, and the nylon 6 resin is impregnated into the fibrous reinforcing material. The plate-shaped body filled with the fibrous reinforcing material is cut into a certain length.
本発明においては、前記繊維状補強材の構成単位である
単繊維（フィラメント）の９０％以上の表面が、前記ナ
イロン６樹脂で被覆されている成形材料を得ることが好
ましい。In the present invention, it is preferable to obtain a molding material in which 90% or more of the surface of single fibers (filaments), which are the constituent units of the fibrous reinforcing material, are coated with the nylon 6 resin.
本発明において、繊維状補強材中にナイロン６樹脂を含
浸して繊維の構成単位である単繊維（フィラメント）の
表面をナイロン６樹脂で被覆する方法は、特に限定され
ない９例えば、溶融状態のナイロン６樹脂を繊維状補強
材に含浸させる溶融含浸方法、粉末状のナイロン６樹脂
を空気中に浮遊、または水などの液体中に怒濁させた状
態で含浸させる流動床法が挙げられる。In the present invention, the method of impregnating nylon 6 resin into the fibrous reinforcing material and coating the surface of single fibers (filaments), which are the constituent units of fibers, with nylon 6 resin is not particularly limited. Examples include a melt impregnation method in which a fibrous reinforcing material is impregnated with nylon 6 resin, and a fluidized bed method in which powdered nylon 6 resin is suspended in the air or impregnated in a liquid such as water in an turbid state.
溶融含浸法の代表的な例は特開昭６１−２２９５３４号
、同６１−２２９５３５号、同６１−２２９５３６号及
び特願昭６１−２１６２５３号に開示されている。Representative examples of the melt impregnation method are disclosed in Japanese Patent Application Laid-Open Nos. 61-229534, 61-229535, 61-229536 and Japanese Patent Application No. 61-216253.
本発明で採用可能な溶融含浸法の一例を第３図に基き説
明する。An example of the melt impregnation method that can be employed in the present invention will be explained based on FIG. 3.
複数のポビン１から引き出された長繊維のローピング２
を、−整列器３で一方向に整列させた後、張力調整ロー
ル４．５．６を通過させて繊維シート７とする。なお本
発明のおいては一方向に整列させた繊維シート以外に、
織布等の多方向連続織組を用いることもできる。Long fiber roping 2 drawn from multiple pobbins 1
are aligned in one direction by an aligner 3, and then passed through a tension adjustment roll 4.5.6 to form a fiber sheet 7. In addition, in the present invention, in addition to the fiber sheet aligned in one direction,
Multidirectional continuous weaves such as woven fabrics can also be used.
一方、押出機（図示せず）で加熱溶融した樹脂をダイ８
を経由して、加熱ロール９で加熱される下ベルト１０の
表面に塗布する。上ベルト１２は加熱ロール１１で加熱
される。On the other hand, the extruder (not shown) heats and melts the resin into a die 8.
It is applied to the surface of the lower belt 10 which is heated by the heating roll 9. The upper belt 12 is heated by a heating roll 11.
次いで、前記シート７は、下ベル）１０と上ベル目２の
間に扶まれた状態で、加熱された含浸ロール１３の間を
、張力をかけながら通過する。Next, the sheet 7 is passed between the heated impregnating rolls 13 under tension while being held between the lower bell 10 and the upper bell 2.
このようにして得られた連続繊維／ナイロン６樹脂の複
合体１４は、そのまま或いは必要により所望の厚みにな
るように必要枚数を積層・熱圧した後、所望の幅に繊維
と平行にスリック１７でスリントした後、所望の長さに
繊維と直角方向に切断機１８で切断することにより、角
形状の成形材料２０を得ることができる。なお第３図に
おいて、１５．１６は引取用ロールである。The continuous fiber/nylon 6 resin composite 14 obtained in this way may be used as it is or, if necessary, after laminating and hot pressing the required number of sheets to obtain the desired thickness, slick 17 in parallel with the fibers to the desired width. After the fibers are slinted, a rectangular molding material 20 can be obtained by cutting the fibers to a desired length using a cutter 18 in a direction perpendicular to the fibers. In addition, in FIG. 3, 15 and 16 are rolls for take-up.
上記積層・熱圧する方法としては、例えば当該複合体１
４の表面をナイロン６樹脂の軟化点以上に加熱後積層す
るか、或いはｆｉ層後加熱炉内で当該樹脂の軟化点以上
に加熱する０次いで当該複合体１４を冷ニップロール間
を通過させる等して加圧下に当該樹脂の固化温度以下ま
で冷却する。As the method of laminating and hot pressing, for example, the composite 1
The surface of nylon 6 resin is heated to a temperature higher than the softening point of the nylon 6 resin, or the composite 14 is heated to a temperature higher than the softening point of the resin in a heating furnace after the FI layer.Then, the composite 14 is passed between cold nip rolls, etc. The resin is cooled under pressure to a temperature below the solidification temperature of the resin.
このようにして得られた成形材料は、そのまま、或いは
所望の繊維充填率になるように繊維未強化ナイロン６樹
脂とトライブレンドすることにより成形材料混合物を得
、所謂マスターバッチとして用いることにより、射出成
形、押出成形に供せられる。The molding material thus obtained can be used as it is or by tri-blending it with unreinforced nylon 6 resin to obtain the desired fiber filling rate to obtain a molding material mixture and using it as a so-called masterbatch for injection. Can be used for molding and extrusion.
当該成形材料と繊維未強化ナイロン６樹脂とのブレンド
比に制約は特になく、当該混合物を成形して得られる成
形品の繊維充填率の設定値によって決定されるべきであ
る。There are no particular restrictions on the blend ratio of the molding material and the non-fiber-reinforced nylon 6 resin, and it should be determined by the set value of the fiber filling rate of the molded product obtained by molding the mixture.
本発明に用いられる繊維未強化樹脂のＭＦＲは、本発明
の測定条件において前記の成形材料中のナイロン６樹脂
ＭＦＨの０．０５〜１倍である。１倍を越えると成形品
の物性が大きく低下するため好ましくなく、また０、０
５倍未満では成形品中の繊維分散不良や繊維破損が起こ
り、本発明の効果を発揮できないため好ましくない。The MFR of the fiber-unreinforced resin used in the present invention is 0.05 to 1 times that of the nylon 6 resin MFH in the above molding material under the measurement conditions of the present invention. If it exceeds 1 times, the physical properties of the molded product will greatly deteriorate, which is undesirable.
If it is less than 5 times, it is not preferable because poor fiber dispersion and fiber breakage occur in the molded article, making it impossible to exhibit the effects of the present invention.
なお、上記成形材料または成形材料混合物は、上記射出
成形、押出成形以外に、例えば圧縮成形にも適用できる
。この圧縮成形に適用する場合においても、成形材料の
形状が板状体、即ち鱗片状であるから金型との密着が良
い、′また比表面積が大きいため、材料中の樹脂溶融時
間が早く、従来法と比較して短時間に成形ができる。こ
の場合従来の成形材料が通常円筒状であるのに対し、当
該材料は鱗片状であり、金型上での位置設定が容易であ
るという副次的効果がある。Note that the above-mentioned molding material or molding material mixture can be applied to, for example, compression molding in addition to the above-mentioned injection molding and extrusion molding. When applied to this compression molding, the molding material has a plate-like shape, that is, a scale, so it adheres well to the mold. Also, because the specific surface area is large, the resin in the material melts quickly. Molding can be done in a shorter time compared to conventional methods. In this case, whereas conventional molding materials are usually cylindrical, the material is scale-like, and has the secondary effect of being easier to position on the mold.
以下、本発明の実施例について説明するが、本発明の範
囲でこれらの実施例によって制限的に解されるものでは
ない。Examples of the present invention will be described below, but these examples should not be construed as limiting within the scope of the present invention.
実施例１
第３図に示す装置を用い、ナイロン６樹脂とガラス繊維
から、次のようにして成形材料を得た。Example 1 Using the apparatus shown in FIG. 3, a molding material was obtained from nylon 6 resin and glass fiber in the following manner.
ナイロン６樹脂のＭＦＲは、ＪＩＳ Ｋ ７２１０に基
づき試験温度２３５°Ｃ１試験荷重２．１６ｋｇｆの条
件で測定した時に８６ｇ／１０分である。The MFR of nylon 6 resin is 86 g/10 minutes when measured based on JIS K 7210 at a test temperature of 235° C. and a test load of 2.16 kgf.
１００本のボビンｌから引き出されたガラス繊維（繊維
径１３μｍ、収束本数１６００本）のロービング２１０
０本を、整列器３で一方向に整列させた後、張力調整ロ
ール４．５．６を通過させて２００ｍｍ幅の繊維シート
７とした。Roving 210 of glass fibers (fiber diameter 13 μm, convergence number 1600) drawn from 100 bobbins
After aligning the fibers in one direction with the aligner 3, they were passed through a tension adjustment roll 4.5.6 to form a fiber sheet 7 with a width of 200 mm.
一方、押出機（図示せず）で２４０″Ｃに加熱溶融した
ナイロン６樹脂をダイ８を経由して、下ベルト用ロール
９（ここでは２本、９°は加熱せず）で２８０’Ｃに加
熱された下ベルト１０の表面に１４５μｍの厚みで塗布
した。On the other hand, nylon 6 resin heated and melted at 240"C in an extruder (not shown) is passed through a die 8 and heated to 280"C with lower belt rolls 9 (here, two rolls, 9 degrees are not heated). It was applied to a thickness of 145 μm on the surface of the lower belt 10 which had been heated to
次いで前記シート７を、下ベルト１０と上ベルト１２（
２本の上ベルト用ロール１１で２８０″Ｃに加熱されて
いる。尚ロール１１’ は加熱しない、）に挟んだ状態
で２８０°Ｃに加熱された径２４０閣の３本の含浸ロー
ル１３の間を、１１５ｋｇの張力をかけなから５０ｃｒ
ａ／分の速度で通過させた。Next, the sheet 7 is attached to the lower belt 10 and the upper belt 12 (
The three impregnated rolls 13 with a diameter of 240 cm are heated to 280°C with the two rolls 11 for the upper belt heated to 280°C.The rolls 11' are not heated. 50cr without applying 115kg of tension between
It was passed at a speed of a/min.
このようにして得られたガラス繊維／ナイロン６柑脂複
合体１４は１００°Ｃまで冷却された後、引取用ロール
１５．１６で引き取った後、スリッタ１７で幅５ｍｍ間
隔でスワントシた後、切断機１８で長さ３ｍｍに切断し
て厚み０．２４ｍｍ、ガラス繊維充填率７０重量％の成
形材料を得た。The glass fiber/nylon 6-citrus composite 14 thus obtained was cooled to 100°C, taken off by take-up rolls 15 and 16, swung at intervals of 5 mm in width by a slitter 17, and then cut. The molding material was cut into a length of 3 mm using a machine 18 to obtain a molding material having a thickness of 0.24 mm and a glass fiber filling rate of 70% by weight.
得られた成形材料の比表面積を求めたところ５７Ｃ績／
ｇであった。The specific surface area of the molding material obtained was found to be 57C/
It was g.
次いで当該成形材料４３重量部と繊維未強化ナイロン６
樹脂（ＭＦＲ＝ ７ ｇ ／１０分）５７重量部をドラ
イブレドして成形材料混合物を得、射出成形機を用いて
ガラス繊維充填率３０重量％の成形品を作成した。Next, 43 parts by weight of the molding material and unreinforced nylon 6
A molding material mixture was obtained by dry-blending 57 parts by weight of the resin (MFR=7 g/10 minutes), and a molded article with a glass fiber filling rate of 30% by weight was produced using an injection molding machine.
成形品の断面を走査型電子顕微鏡で観察したが、繊維の
分散性は良好であり、またブロッキング化等の現象は見
られなかった。When the cross section of the molded article was observed using a scanning electron microscope, the dispersibility of the fibers was good and no phenomena such as blocking were observed.
また当該成形品を用いてアイゾツト衝撃強度、平均繊維
長を測定した。結果を表１に示す。In addition, Izot impact strength and average fiber length were measured using the molded product. The results are shown in Table 1.
従来技術品と比較して射出成形時の繊維の折）員が少な
く、アイゾツト衝撃強度も大巾に向上した。Compared to conventional products, there is less fiber folding during injection molding, and the isot impact strength has also been greatly improved.
実施例２
ベルトへのナイロン６樹脂塗布厚みを２１０μｍに変え
た以外は実施例１と同様に処理して繊維充填率５０％の
成形材料を得た。ついで、得られた成形材料をそのまま
実施例１と同様に成形して繊維充填率５０％の成形品を
得た。Example 2 A molding material with a fiber filling rate of 50% was obtained in the same manner as in Example 1, except that the thickness of the nylon 6 resin applied to the belt was changed to 210 μm. Then, the obtained molding material was molded as it was in the same manner as in Example 1 to obtain a molded product with a fiber filling rate of 50%.
成形品の断面を走査型電子顕微鏡で観察したが、繊維の
分散性は良好であり、またブロッキング化等の現象は見
られなかった。また当該成形品を用いてアイゾツト衝撃
強度、平均繊維長を測定した。結果を表１に示す。When the cross section of the molded article was observed using a scanning electron microscope, the dispersibility of the fibers was good and no phenomena such as blocking were observed. In addition, Izot impact strength and average fiber length were measured using the molded product. The results are shown in Table 1.
比較例１
本発明の測定条件におけるＭＦＲが７ｇ／１０分である
ナイロン６樹脂を用いた以外は実施例１と同様にしてガ
ラス繊維充填率７０重量％、比表面積が５７ｃ艷／ｇの
成形材料を得た。Comparative Example 1 A molding material with a glass fiber filling rate of 70% by weight and a specific surface area of 57 cm/g was prepared in the same manner as in Example 1, except that a nylon 6 resin having an MFR of 7 g/10 minutes under the measurement conditions of the present invention was used. I got it.
次いで当該成形材料４３重量部と実施例１で用いた繊維
未強化ナイロン６樹脂５７重量部をトライブレンドして
底形材料混合物を得、射出成形機を用いてガラス繊維充
填率３０重量％の成形品を作成した。Next, 43 parts by weight of the molding material and 57 parts by weight of the non-fiber-reinforced nylon 6 resin used in Example 1 were triblended to obtain a bottom material mixture, and molded using an injection molding machine with a glass fiber filling rate of 30% by weight. created a product.
成形品の断面を走査型電子顕微鏡で観察したが、繊維の
分散性は不充分であり、またブロッキング化等の現象は
見られなかった。When the cross section of the molded article was observed with a scanning electron microscope, the dispersibility of the fibers was insufficient and no phenomena such as blocking were observed.
また当該成形品を用いてアイシンＮＪｉＦ強度、平均繊
維長を測定した。結果を表１に示す。Furthermore, the Aisin NJiF strength and average fiber length were measured using the molded product. The results are shown in Table 1.
実施例１と比較して射出成形時の繊維の折損が激しく、
アイゾツト衝撃強度も大巾に低下した。Compared to Example 1, fiber breakage during injection molding was severe;
Izotsu impact strength also decreased significantly.
比較例２
直径３ｍｍ、長さ３００ＩＩｌｆｉｌの穿孔を有するク
ロスヘツドダイ内に押出機で溶融したナイロン６樹脂（
実施例１で用いた樹脂と同しもの）を供給した。Comparative Example 2 Nylon 6 resin (
The same resin as used in Example 1) was supplied.
一方、実施例１で用いたガラス繊維７本を上記穿孔内に
通し、２８０°Ｃに加熱されたクロスヘツド内を通過さ
せながら溶融ナイロン６樹脂と接触させて繊維を樹脂で
被覆した。On the other hand, the seven glass fibers used in Example 1 were passed through the perforations and brought into contact with molten nylon 6 resin while passing through a crosshead heated to 280°C to coat the fibers with the resin.
次いで１００°Ｃ以下に冷却して引き取った後、長さ３
ｍに切断して、直径３＋ｍｎ、ガラス繊維充填率４０Ｍ
量％の円柱形状を有する成形材料を得た。得られた成形
材料の比表面積を求めたところ１４ｃｕｌ／ｇであった
。Then, after cooling to below 100°C and taking it away, the length of 3
Cut to m, diameter 3+mn, glass fiber filling rate 40M
A molding material having a cylindrical shape of % was obtained. The specific surface area of the molding material obtained was determined to be 14 cul/g.
次いで得られた成形材料を表１に示すようにトライブレ
ンド後、実施例１で用いた射出成形機によってガラス繊
維充填率３０重量％の成形品を作成した。成形品の断面
を走査型電子顕微鏡で観察したが、繊維の分散性は不充
分であり、またブロッキング化等の現象が観察された。Next, the obtained molding materials were triblended as shown in Table 1, and then molded products with a glass fiber filling rate of 30% by weight were created using the injection molding machine used in Example 1. When the cross section of the molded article was observed using a scanning electron microscope, it was found that the dispersibility of the fibers was insufficient and phenomena such as blocking were observed.
また当該成形品を用いてアイゾッ） Ｕｉ Ｈ強度、平
均繊維長を測定した。結果を表１に示す。In addition, using the molded product, the IZO) Ui H strength and average fiber length were measured. The results are shown in Table 1.
実施例１と比較して射出成形時の繊維折損が激しく、そ
の結果アイゾツト衝撃強度も大きく低下した。Compared to Example 1, fiber breakage during injection molding was severe, and as a result, the Izot impact strength was also significantly reduced.
実施例３〜４
実施例１において、表１に示すナイロン６樹脂に代えて
、実施例１と同様にして成形材料を得た。Examples 3 to 4 Molding materials were obtained in the same manner as in Example 1, except that the nylon 6 resin shown in Table 1 was used in Example 1.
次いで表１に示す割合で繊維未強化ナイロン６樹脂とト
ライブレンド後、成形して表１に示す成形品を得た。Next, the mixture was triblended with fiber-unreinforced nylon 6 resin in the proportions shown in Table 1, and then molded to obtain the molded products shown in Table 1.
当該成形品を用いてアイゾツト衝撃強度、平均繊維長を
測定した。結果を表１に示す。Izot impact strength and average fiber length were measured using the molded product. The results are shown in Table 1.
比較例３
実施例１において、表１に示すナイロン６樹脂に代えて
、実施例１と同様にして成形材料を得た。Comparative Example 3 A molding material was obtained in the same manner as in Example 1, except that the nylon 6 resin shown in Table 1 was used in Example 1.
次いで表１に示す割合で繊維未強化ナイロン６樹脂とト
ライブレンド後、底形して表１に示す成形品を得た。Next, the mixture was triblended with non-fiber-reinforced nylon 6 resin in the proportions shown in Table 1, and the molded products shown in Table 1 were obtained by bottom shaping.
当ｔｉｔ形品を用いてアイゾツト衝撃強度、平均繊維長
を測定した。結果を表１に示す。Izot impact strength and average fiber length were measured using this tit shaped product. The results are shown in Table 1.
実施例５
実施例１で得た成形材料を、繊維未強化ナイロン６樹脂
とトライブレンドして繊維充填率が３０％になるように
調整した。このトライブレンド物を通常の押出成形機を
用いて、直径３０ｍｍφの丸棒の成形品を得た。Example 5 The molding material obtained in Example 1 was triblended with non-fiber-reinforced nylon 6 resin to adjust the fiber filling rate to 30%. This triblend was molded into a round bar with a diameter of 30 mm using a conventional extrusion molding machine.
この成形品の断面を走査型電子顕微鏡で観察したが、繊
維の分散性は良好であり、またブロッキング化等の現象
は見られなかった。When the cross section of this molded article was observed using a scanning electron microscope, the dispersibility of the fibers was good and no phenomena such as blocking were observed.
実施例６
離型剤（ＦＲＥＫＯＴＥ４４ ；米国ＦＲＥＫＯＴＥ
Ｉｎｃ、製）を塗布した第４図に示す雌金型３０内に実
施例１で得た成形材料２０を３００ ｇ均一に置いた後
、上記離型剤を塗布した雌金型３１をセットした。Example 6 Mold release agent (FREKOTE44; American FREKOTE)
After uniformly placing 300 g of the molding material 20 obtained in Example 1 into the female mold 30 shown in FIG. .
次いで２６０°Ｃに加熱した加熱炉内に上記金型を金型
温度が２４０°Ｃになる迄放置した後、素早く常温の加
圧板を有する圧縮成形機内に移し、５０ｋｇ／ｃｉの圧
力で２０分間加圧して、３００ｘ ３００ｘ ２．Ｏｍ
＋ａの成形品を得た。Next, the mold was left in a heating furnace heated to 260°C until the mold temperature reached 240°C, and then quickly transferred to a compression molding machine with a pressure plate at room temperature for 20 minutes at a pressure of 50 kg/ci. Apply pressure to 300x 300x 2. Om
A molded product of +a was obtained.
成形品の表面を肉眼で観察したが、繊維が表面に浮き出
ることもなく、良好に繊維が分散しており、良好な表面
光沢を有していた。When the surface of the molded product was visually observed, it was found that the fibers were well dispersed without any fibers protruding from the surface, and the molded product had good surface gloss.
〔発明の効果）
本発明によれば、繊維補強材を高濃度に充填しているに
も拘らず、成形時の繊維分散性が良好であり、繊維の折
Ｉ員や破断が少なく、機械強度が大幅に向上した成形品
が得られる成形材料及びその混合物を提供することがで
きる。[Effects of the Invention] According to the present invention, despite being filled with a high concentration of fiber reinforcing material, the fiber dispersibility during molding is good, there is little folding or breaking of the fibers, and the mechanical strength is improved. It is possible to provide a molding material and a mixture thereof that yield a molded article with significantly improved properties.
第１図は本発明の成形材料の構造の一例を示す斜？Ｊ１
図、第２図は成形材料の部分拡大図、第３１ｆ！Ｊは本
発明の成形材料を製造する装置の一例を示す概略図、第
４図は本発明が適用される圧縮成形用の金型の一例を示
す斜視図である。
２０：成形材料
２１：ナイロン６樹脂
２２：単繊維
３０ ： ＃金型
３１：雄金型FIG. 1 is an oblique view showing an example of the structure of the molding material of the present invention. J1
Fig. 2 is a partially enlarged view of the molding material, Fig. 31f! J is a schematic view showing an example of an apparatus for manufacturing the molding material of the present invention, and FIG. 4 is a perspective view showing an example of a mold for compression molding to which the present invention is applied. 20: Molding material 21: Nylon 6 resin 22: Single fiber 30: #Mold 31: Male mold
Claims (1)
材がナイロン６樹脂によって被覆され、且つ該ナイロン
６樹脂が繊維状補強材中に含浸されている構成の板状体
を得、前記繊維状補強材が充填されている該板状体を切
断して得られる成形材料において、 （ｉ）該成形材料に対する繊維状補強材の充填率が５０
重量％以上９０重量％以下、 （ｉｉ）該繊維状補強材の長さが１〜３０ｍｍ、（ｉｉ
ｉ）該板状体の少なくとも一辺が１ｍｍ以下、（ｉｖ）
該成形材料の比表面積が２０ｃｍ＾２／ｇ以上（ｖ）該
ナイロン６樹脂のメルトフロレートがＪＩＳＫ７２１０
に基づき試験温度２３５℃、試験荷重２．１６ｋｇｆの
条件で測定した時に２０ｇ／１０分以上１００ｇ／１０
分以下 であることを特徴とする成形材料。 ２、請求項１記載の成形材料と繊維未強化ナイロン６樹
脂とからなり、該繊維未強化ナイロン６樹脂のメルトフ
ロレートが前記ナイロン６樹脂のメルトフロレート０．
０５〜１倍（同一条件下で測定）であることを特徴とす
る成形材料混合物。[Scope of Claims] 1. A plate-shaped body having a structure in which a fibrous reinforcing material made of single fibers (filaments) is covered with nylon 6 resin, and the nylon 6 resin is impregnated into the fibrous reinforcing material. and cutting the plate-shaped body filled with the fibrous reinforcing material, (i) the filling ratio of the fibrous reinforcing material to the molding material is 50
% by weight or more and 90% by weight or less, (ii) the length of the fibrous reinforcing material is 1 to 30 mm, (ii)
i) at least one side of the plate-like body is 1 mm or less; (iv)
The specific surface area of the molding material is 20 cm^2/g or more (v) The melt fluorate of the nylon 6 resin is JISK7210.
20g/10 minutes or more 100g/10 when measured at a test temperature of 235℃ and a test load of 2.16kgf based on
A molding material characterized by being less than 1 minute. 2. The molding material according to claim 1 and a non-fiber-reinforced nylon 6 resin, wherein the melt fluorate of the non-fiber-reinforced nylon 6 resin is equal to or less than that of the nylon 6 resin.
05 to 1 times (measured under the same conditions).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31769689A JPH03179035A (en) | 1989-12-08 | 1989-12-08 | Molding material and its mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31769689A JPH03179035A (en) | 1989-12-08 | 1989-12-08 | Molding material and its mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03179035A true JPH03179035A (en) | 1991-08-05 |
Family
ID=18091006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31769689A Pending JPH03179035A (en) | 1989-12-08 | 1989-12-08 | Molding material and its mixture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03179035A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006016463A (en) * | 2004-06-30 | 2006-01-19 | Asahi Fiber Glass Co Ltd | Filament-reinforced polyamide resin molding material and method for producing the same |
| JP2006016462A (en) * | 2004-06-30 | 2006-01-19 | Asahi Fiber Glass Co Ltd | Composition for continuous filament-reinforced polyamide resin molding and method for producing molded body using the same |
-
1989
- 1989-12-08 JP JP31769689A patent/JPH03179035A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006016463A (en) * | 2004-06-30 | 2006-01-19 | Asahi Fiber Glass Co Ltd | Filament-reinforced polyamide resin molding material and method for producing the same |
| JP2006016462A (en) * | 2004-06-30 | 2006-01-19 | Asahi Fiber Glass Co Ltd | Composition for continuous filament-reinforced polyamide resin molding and method for producing molded body using the same |
| JP4514531B2 (en) * | 2004-06-30 | 2010-07-28 | オーウェンスコーニング製造株式会社 | A composition for molding a long fiber reinforced polyamide resin and a method for producing a molded body. |
| JP4666571B2 (en) * | 2004-06-30 | 2011-04-06 | オーウェンスコーニング製造株式会社 | Long glass fiber reinforced polyamide resin molding material and method for producing the same |
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