JPS637926B2 - - Google Patents
Info
- Publication number
- JPS637926B2 JPS637926B2 JP54161886A JP16188679A JPS637926B2 JP S637926 B2 JPS637926 B2 JP S637926B2 JP 54161886 A JP54161886 A JP 54161886A JP 16188679 A JP16188679 A JP 16188679A JP S637926 B2 JPS637926 B2 JP S637926B2
- Authority
- JP
- Japan
- Prior art keywords
- specific gravity
- filler
- synthetic resin
- fillers
- top plate
- 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
Links
- 230000005484 gravity Effects 0.000 claims description 62
- 239000000945 filler Substances 0.000 claims description 55
- 229920003002 synthetic resin Polymers 0.000 claims description 20
- 239000000057 synthetic resin Substances 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- LLPKQRMDOFYSGZ-UHFFFAOYSA-N 2-methyl-4-methylimidazole Natural products CC1=CN=C(C)N1 LLPKQRMDOFYSGZ-UHFFFAOYSA-N 0.000 description 12
- 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 10
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 239000003822 epoxy resin Substances 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 239000004593 Epoxy Substances 0.000 description 5
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000005350 fused silica glass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 238000009849 vacuum degassing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- JDBDDNFATWXGQZ-UHFFFAOYSA-N 5-methyl-3a,4,5,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1=CC(C)CC2C(=O)OC(=O)C12 JDBDDNFATWXGQZ-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000004067 bulking agent Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 239000012765 fibrous filler Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 本発明は軽量合成樹脂成形品に関する。[Detailed description of the invention] The present invention relates to lightweight synthetic resin molded articles.
従来、合成樹脂成形品には硬化に伴う収縮の低
減や機械的性質、電気的性質などの向上を目的と
してかなりの大量の充てん剤が使用される。一般
に使用される充てん剤は、溶融シリカ、溶融アル
ミナ、ガラスパウダー、雲母粉末、タルクなどで
あるが、これらの充てん剤は比重が大きいため、
成形品の比重も1.5以上、一般には1.8〜2.2程度の
ものとなつてしまい、軽量化が要求される船体や
車体の補強材料として不適当なものであつた。ま
た長尺物として取り扱われるもの、例えば、抄紙
機用支持条片、サクシヨンボツクスの天板、フオ
ーシヨンボードなどもその重量が大きくなり不適
当であつた。 Conventionally, a considerable amount of filler is used in synthetic resin molded articles for the purpose of reducing shrinkage during curing and improving mechanical properties, electrical properties, etc. Commonly used fillers include fused silica, fused alumina, glass powder, mica powder, and talc, but because these fillers have a high specific gravity,
The specific gravity of the molded product was also over 1.5, generally around 1.8 to 2.2, making it unsuitable as a reinforcing material for ship and car bodies, which require weight reduction. Further, items that are handled as long items, such as support strips for paper machines, top plates of suction boxes, and fashion boards, are also unsuitable due to their large weight.
また、これらの充てん剤は不規則な形状をして
いるために、混合時の粘度上昇が著しい。これを
解決する手段として、中空球もしくは中空の球状
をした充てん剤を用いることがあげられるが、こ
れだけでは、表面の硬度が不足であり、また表面
の耐摩耗性が劣るなどの欠点を生ずる。 Furthermore, since these fillers have an irregular shape, their viscosity increases significantly during mixing. One way to solve this problem is to use hollow spheres or hollow spherical fillers, but this alone has drawbacks such as insufficient surface hardness and poor surface abrasion resistance.
抄紙機用サクシヨンボツクスの天板は第１図に
示す構造で、サクシヨンボツクスの上に取り付
け、抄紙機のワイヤー上の湿紙の水分または洗滌
毛布の水分を吸水する用に供されるもので、従
来、この種の天板は板に木材または金属製の台板
の上面にこれと殆んど同じ厚さのゴム板を重ね合
わせボルト締めしたものが広く使用されていた
が、ゴムは老化しやすいばかりでなく摩耗が大き
いため耐久力が小さく、しかもボルト締めを必要
とする欠点があつた。 The top plate of a suction box for a paper machine has the structure shown in Figure 1, and is attached to the top of the suction box to absorb water from the wet paper on the wire of the paper machine or water from the washing blanket. Conventionally, this type of top plate was widely used by stacking a rubber plate of almost the same thickness on the top of a wood or metal base plate and tightening it with bolts, but rubber Not only does it age easily, but it also suffers from a lot of wear, so its durability is low, and it also has the disadvantage of requiring bolt tightening.
また、実公昭41−22726号のように合板をガラ
ス繊維などを混和した注形可能な合成樹脂で作
り、その上に耐摩耗性良好で注形可能な合成樹脂
層を接着したものは、注形して得られるが二度も
注形作業が必要となるか充てん剤としてガラス繊
維や、溶融シリカ、炭酸カルシウムなどのように
比重の大きなものを用いるため、サクシヨンボツ
クスの天板が重くなり、抄紙機の金網交換時の取
扱い重量が大きくなる欠点があつた。また、抄紙
機用支持条片、フオーメーシヨンボード等につい
ても同様であつた。 In addition, as in Utility Model Publication No. 41-22726, plywood is made of castable synthetic resin mixed with glass fiber, etc., and a layer of castable synthetic resin with good wear resistance is bonded on top of the plywood. However, the top plate of the suction box becomes heavy because fillers with high specific gravity such as glass fiber, fused silica, and calcium carbonate are used as fillers. However, there was a drawback that the weight to be handled when replacing the wire mesh in the paper machine was large. The same was true for support strips for paper machines, formation boards, and the like.
本発明は、このような問題点を解決するもの
で、最も大きい比重と最も小さい比重との差を
1.0以上とした少なくとも２種類の充てん剤と、
注形硬化可能な合成樹脂とを比重の大きい充てん
剤を偏在させて硬化させてなる軽量合成樹脂成形
品に関する。 The present invention solves these problems by calculating the difference between the highest specific gravity and the lowest specific gravity.
at least two types of fillers with a value of 1.0 or more;
This invention relates to a lightweight synthetic resin molded product made by curing a cast-curable synthetic resin with unevenly distributed fillers having a large specific gravity.
比重の小さい充てん剤の例としてはフイライト
（日本フイライト製）、シラスバルーン（三機工業
株式会社製）、ガラスマイクロバルーン（東洋曹
達工業株式会社製）、パーライト（東邦パーライ
ト株式会社製）などがあげられ単一もしくは複数
の独立気泡から成ることが望ましいが連続気泡を
含むものであつても差しつかえなく、その比重は
１より、好ましくは0.8より小さいことが望まし
い。 Examples of fillers with low specific gravity include fluorite (manufactured by Nippon Fluite), Shirasu balloon (manufactured by Sanki Kogyo Co., Ltd.), glass microballoon (manufactured by Toyo Soda Kogyo Co., Ltd.), and perlite (manufactured by Toho Perlite Co., Ltd.). It is desirable that the cell be composed of a single or a plurality of closed cells, but it may also contain open cells, and its specific gravity is desirably less than 1, preferably less than 0.8.
また成形品を使用する温度が100℃以下であれ
ば、比重の小さい充てん剤として有機質のもの、
例えばコルクのチツプの如き、木質系や繊維質系
の充てん剤も用いられる。 In addition, if the temperature at which the molded product is used is below 100℃, organic fillers with low specific gravity may be used.
Woody or fibrous fillers, such as cork chips, may also be used.
また比重の大きい充てん剤としては溶融アルミ
ナ粉末、溶融シリカ粉末、ジルコニア粉末、ジル
コニアサンド、ガラスパウダー、ガラスビーズ、
炭化ケイ素粉末、雲母粉末、炭酸カルシウムなど
比重が1.8より大きい充てん剤であれば使用でき
る。 Fillers with large specific gravity include fused alumina powder, fused silica powder, zirconia powder, zirconia sand, glass powder, glass beads,
Any filler with a specific gravity greater than 1.8 can be used, such as silicon carbide powder, mica powder, and calcium carbonate.
比重の大きい充てん剤としては、比重の最も小
さい充てん剤との比重の差が1.0以上あればよく、
特に制限はない。 As a filler with a high specific gravity, it is sufficient if the difference in specific gravity with the filler with the smallest specific gravity is 1.0 or more.
There are no particular restrictions.
最も大きい比重と最も小さい比重の差が1.0以
上ある少なくとも２種類の充てん剤を用いること
により、型に流し込みもしくは圧入した後に、比
重の大きい充てん剤が沈降し、主として比重の大
きい充てん剤から成る層と、主として比重の小さ
い充てん剤から成る層の２層もしくは多層から成
る成形品が得られる。 By using at least two types of fillers with a difference of 1.0 or more between the highest specific gravity and the lowest specific gravity, after being poured or press-fitted into the mold, the filler with a higher specific gravity settles, creating a layer consisting mainly of the filler with a higher specific gravity. Then, a molded article consisting of two or multiple layers consisting mainly of a filler having a low specific gravity is obtained.
注形法は、比重の大きい充てん剤を偏在させる
ことができる注形法であれば良く、片面に主とし
て比重の大きい充てん剤から成る層を必要とする
場合には、通常の成形法で容易に成形でき、また
円筒形の形状を有するもので、その外周面に主と
して比重の大きい充てん剤から成る層を必要とす
る場合には、型枠を回転させて成形すれば良い。 Any casting method that can unevenly distribute a filler with a high specific gravity may be used, and if a layer consisting mainly of a filler with a high specific gravity is required on one side, it can be easily formed using a normal molding method. If it is moldable and has a cylindrical shape and requires a layer mainly composed of a filler with a high specific gravity on its outer peripheral surface, the molding may be performed by rotating the mold.
サクシヨンボツクスの天板の場合には、抄紙機
の金網と接触する面を下面にして注形することに
より比重の大きい充てん剤を接触面に沈降させる
ことができ、少量の充てん剤で接触面の耐摩耗性
を向上することができ、さらに金網との非接触面
側は比重の小さい充てん剤を充てんすることによ
り、サクシヨンボツクスの天板を大幅に軽量化す
ることが可能となる。また比重の小さい充てん剤
として、単一ないしは複数の独立気泡または連続
気泡を有する球もしくは球状の充てん剤を用いた
場合には、不規則な形状の充てん剤を用いた場合
に比べて、充てん剤の体積分率を高めることがで
き、また充てん剤と合成樹脂との混合時間を大幅
に短縮できるので好ましい。 In the case of the top plate of a suction box, by casting the top plate with the side that will contact the wire mesh of the paper machine facing downward, the filler with a high specific gravity can settle on the contact surface, and a small amount of filler can be applied to the contact surface. Furthermore, by filling the side that does not come into contact with the wire mesh with a filler with a low specific gravity, it is possible to significantly reduce the weight of the top plate of the suction box. In addition, when a spherical or spherical filler with a single or multiple closed cells or open cells is used as a filler with a low specific gravity, the filler has a lower specific gravity than when an irregularly shaped filler is used. It is preferable because it can increase the volume fraction of the filler and the time for mixing the filler and the synthetic resin can be significantly shortened.
主として比重の大なる充てん剤から成る層をそ
の表面に形成させることにより、表面の耐摩耗性
及び硬度を向上するとともに、機械的な性質を向
上することができる。 By forming a layer mainly composed of a filler with a high specific gravity on the surface, the wear resistance and hardness of the surface can be improved, and the mechanical properties can be improved.
また、比重の大きい充てん剤と小さい充てん剤
の混合比率には特に制限はないが、それぞれの特
長をもたせるには体積比で
比重の大きい充てん剤／比重の小さい充てん剤＝５／
95乃至50／50
好ましくは10/90乃至30/70とされる。 In addition, there is no particular restriction on the mixing ratio of fillers with high specific gravity and fillers with low specific gravity, but in order to have the characteristics of each, the volume ratio of filler with high specific gravity / filler with low specific gravity = 5 /
95 to 50/50, preferably 10/90 to 30/70.
また合成樹脂に対する充てん剤の比率は注形可
能であればよく、特に制限はない。 Further, the ratio of filler to synthetic resin is not particularly limited as long as it can be cast.
合成樹脂の種類は、硬化可能のものであれば良
く特に制限はないが、寸法精度を要求される場合
には、エポキシ樹脂が、速硬化が要求される場合
には不飽和ポリエステル樹脂が望ましい。注形条
件、金型の構造などには特に制限はない。 The type of synthetic resin is not particularly limited as long as it is curable; however, if dimensional accuracy is required, epoxy resin is preferred, and if rapid curing is required, unsaturated polyester resin is preferred. There are no particular restrictions on casting conditions, mold structure, etc.
本発明になる軽量合成樹脂成形品の製造に用い
られる充てん剤および合成樹脂を含有する組成物
は、必要に応じてさらに可塑剤、顔料等を含んで
もよい。 The composition containing a filler and a synthetic resin used for producing the lightweight synthetic resin molded article of the present invention may further contain a plasticizer, a pigment, etc., if necessary.
本発明における軽量合成樹脂成形品としては、
例えば抄紙機用サクシヨンボツクスの天板、支持
条片、フオーメーシヨンボード、軽量化されたパ
イプ、丸棒等があげられる。 The lightweight synthetic resin molded product in the present invention includes:
Examples include top plates of suction boxes for paper machines, support strips, formation boards, lightweight pipes, round bars, and the like.
本発明を実施例および比較例によつて説明す
る。部とあるのは重量部である。 The present invention will be explained with reference to Examples and Comparative Examples. Parts are by weight.
実施例 １
エポキシ当量184〜194（ｇ／当量）のビスフエ
ノールＡ型エポキシ樹脂（チバガイギー社製GY
−260）100部にNH−2200（日立化成製商標、３
又は４メチル−テトラヒドロ無水フタル酸）80部
さらに、２メチル４メチルイミダゾール（四国化
成製）を0.1部加えたものに、比重の大きい充て
ん剤として比重約3.9のWA＃400（不二見研磨材
工業製、Al2O3を主成分とする充てん剤）を30重
量％と比重の小さい充てん剤として比重約0.7の
フイライト＃52/7（日本フイライト工業製）を70
重量％混合した充てん剤（体積比：
WA＃400／フイライト＃52／７＝7.1／92.9）を40体積％
になる
ように混合し、80℃で真空脱泡したのち、120℃
に予熱してあるサクシヨンボツクス天板の金型に
注入し、そのまま120℃で８時間、さらに160℃で
４時間硬化させ、サクシヨンボツクスの天板とし
た。このものの比重は約1.2であり表面の硬度は
ロツクウエルＭスケールで99〜102であつた。Example 1 Bisphenol A type epoxy resin (GY manufactured by Ciba Geigy) with an epoxy equivalent of 184 to 194 (g/equivalent)
-260) 100 parts of NH-2200 (trademark manufactured by Hitachi Chemical, 3
In addition, 0.1 part of 2-methyl-4-methylimidazole (manufactured by Shikoku Kasei) was added to 80 parts of 4-methyl-tetrahydrophthalic anhydride, and WA#400 (manufactured by Fujimi Abrasives Industry Co., Ltd.) with a specific gravity of approximately 3.9 was added as a filler with a high specific gravity. Fillerite #52/7 (manufactured by Nippon Fillite Industries) with a specific gravity of approximately 0.7 was used as a filler with a low specific gravity of 30% by weight (filling agent mainly composed of Al 2 O 3 ).
Filler mixed in weight% (volume ratio:
WA#400/Filite#52/7=7.1/92.9) at 40% by volume
After vacuum degassing at 80℃, heat to 120℃.
The mixture was injected into a mold for a suction box top plate that had been preheated, and then cured at 120°C for 8 hours and then at 160°C for 4 hours to form a suction box top plate. The specific gravity of this material was approximately 1.2, and the surface hardness was 99 to 102 on the Rockwell M scale.
比較例 １
エポキシ当量184〜194（ｇ／当量）のビスフエ
ノールＡ型エポキシ樹脂（チバガイギー社製GY
−260）100部にNH−2200、80部、さらに２メチ
ル４メチルイミダゾールを0.1部加えたものに充
てん剤として比重約3.9のWA＃400を40体積％に
なるように混合し、80℃で真空脱泡したのち、
120℃に予熱してあるサクシヨンボツクス天板の
金型に注入し、そのまま120℃で８時間さらに160
℃で４時間硬化させ、サクシヨンボツクスの天板
とした。Comparative Example 1 Bisphenol A type epoxy resin with an epoxy equivalent of 184 to 194 (g/equivalent) (GY manufactured by Ciba Geigy)
-260) Mix 100 parts of NH-2200, 80 parts of NH-2200, and 0.1 part of 2-methyl-4-methylimidazole to a volume of 40% by volume with WA#400, which has a specific gravity of approximately 3.9, and heat at 80℃. After vacuum degassing,
Pour into a mold on a suction box top plate that has been preheated to 120℃, and continue to heat at 120℃ for 8 hours.
It was cured at ℃ for 4 hours and used as a top plate of a suction box.
このものの比重は約2.3であり、表面の硬度は
ロツクウエルＭスケールで100〜104であつた。 The specific gravity of this material was approximately 2.3, and the surface hardness was 100 to 104 on the Rockwell M scale.
実施例 ２
エポキシ当量184〜194（ｇ／当量）のビスフエ
ノールＡ型エポキシ樹脂（チバガイギー社製GY
−260）100部にNH−2200、80部、さらに２メチ
ル４メチルイミダゾールを0.2部加えたものに、
比重の大きい充てん剤として比重約2.4のクリス
タライトＣ（龍森製）を20重量％と比重の小さい
充てん剤として比重約0.7のフイライト＃52/7を
80重量％混合した充てん剤（体積比：
クリスタライトＣ／フイライト＃52／７＝6.8／93.2）
を35体積％になる
ように混合し、100℃で真空脱泡したのち、120℃
に予熱してある丸棒の金型に注入し、丸棒の中心
軸を回転軸として180rpmで回転させながら140℃
で４時間硬化させ、さらに160℃で４時間硬化さ
せた丸棒とした。この丸棒の比重は約1.1であり、
表面の硬度はロツクウエルＭスケールで98〜101
であつた。Example 2 Bisphenol A type epoxy resin (GY manufactured by Ciba Geigy) with an epoxy equivalent of 184 to 194 (g/equivalent)
-260) To 100 parts, 80 parts of NH-2200, and 0.2 part of 2-methyl-4-methylimidazole were added,
20% by weight of Crystallite C (manufactured by Tatsumori) with a specific gravity of approximately 2.4 as a filler with a high specific gravity, and Filite #52/7 with a specific gravity of approximately 0.7 as a filler with a low specific gravity.
Filler mixed with 80% by weight (volume ratio:
Crystallite C/Flyrite #52/7=6.8/93.2)
were mixed to a concentration of 35% by volume, degassed under vacuum at 100°C, and then heated at 120°C.
Pour the mixture into a preheated round bar mold, and heat to 140°C while rotating at 180 rpm with the center axis of the round bar as the rotation axis.
The mixture was cured at 160° C. for 4 hours, and then at 160° C. for 4 hours to obtain a round bar. The specific gravity of this round bar is approximately 1.1,
Surface hardness is 98-101 on the Rockwell M scale.
It was hot.
比較例 ２
エポキシ当量184〜194（ｇ／当量）のビスフエ
ノールＡ型エポキシ樹脂（チバガイギー社製GY
−260）100部にNH−2200、80部、さらに２メチ
ル４メチルイミダゾールを0.2部加えたものに充
てん剤として比重約2.4のクリスタライトＣを35
体積％になるように混合し、100℃で真空脱泡し
たのち、120℃に予熱した丸棒の金型に注入し丸
棒の中心軸を回転軸として、180rpmで回転させ
ながら、140℃で４時間硬化させ、さらに160℃で
４時間硬化させて丸棒とした。このものの比重は
約1.6であり、表面の硬度はロツクウエルＭスケ
ールで99〜103であつた。Comparative Example 2 Bisphenol A type epoxy resin (GY manufactured by Ciba Geigy) with an epoxy equivalent of 184 to 194 (g/equivalent)
-260) 100 parts, 80 parts of NH-2200, and 0.2 parts of 2-methyl-4-methylimidazole were added, and 35% of Crystallite C with a specific gravity of about 2.4 was added as a filler.
% by volume, vacuum defoamed at 100°C, poured into a round bar mold preheated to 120°C, and heated to 140°C while rotating at 180 rpm with the center axis of the round bar as the rotation axis. It was cured for 4 hours and further cured at 160°C for 4 hours to form a round bar. The specific gravity of this material was approximately 1.6, and the surface hardness was 99 to 103 on the Rockwell M scale.
実施例 ３
エポキシ当量184〜194（ｇ／当量）のビスフエ
ノールＡ型エポキシ樹脂（チバガイギー社製GY
−260）100部にHN−2200、80部さらに２メチル
４メチルイミダゾールを0.2部加えたものに、比
重の大きい充てん剤として比重約3.9のWA＃400
を30重量％と比重の小さい充てん剤として比重約
0.7のフイライト＃52/7を70重量％混合した充て
ん剤（体積比：WA＃400／フイライト＃52／７＝7.1／92
.9）を
40体積％になるように混合し、100℃で真空脱泡
したのち、120℃に予熱してある丸棒の金型に金
型内容積の3/4に相当する量を注入し、丸棒の中
心線を回転の軸として500rpmで回転させながら、
140℃で４時間硬化させ、さらに160℃で４時間硬
化させてパイプとした。このパイプの比重は約
1.2であり、表面の硬度はロツクウエルＭスケー
ルで99〜103であつた。Example 3 Bisphenol A type epoxy resin (GY manufactured by Ciba Geigy) with an epoxy equivalent of 184 to 194 (g/equivalent)
-260) 100 parts of HN-2200, 80 parts and 0.2 parts of 2-methyl-4-methylimidazole were added, and WA#400 with a specific gravity of approximately 3.9 was added as a bulking agent with a high specific gravity.
As a filler with a small specific gravity of 30% by weight, the specific gravity is approximately
Filler containing 70% by weight of 0.7 Filite #52/7 (volume ratio: WA#400/Filite #52/7 = 7.1/92
.9) was mixed to a concentration of 40% by volume, degassed under vacuum at 100°C, and then poured into a round bar mold preheated to 120°C in an amount equivalent to 3/4 of the internal volume of the mold. Then, while rotating at 500 rpm using the center line of the round bar as the axis of rotation,
It was cured at 140°C for 4 hours, and then at 160°C for 4 hours to form a pipe. The specific gravity of this pipe is approximately
1.2, and the surface hardness was 99 to 103 on the Rockwell M scale.
比較例 ３
エポキシ当量184〜194（ｇ／当量）のビスフエ
ノールＡ型エポキシ樹脂100部に、HM−2200、
80部さらに２メチル４メチルイミダゾールを0.2
部加えたものに、充てん剤として比重約3.9の
WA＃400を40体積％になるように混合し、100℃
で真空脱泡したのち120℃に予熱してある丸棒の
金型に金型内容積の3/4に相当する量を注形し、
丸棒の中心軸を回転軸として500rpmで回転させ
ながら、140℃で４時間硬化させ、さらに160℃で
４時間硬化させてパイプとした。Comparative Example 3 HM-2200,
80 parts plus 0.2 of 2-methyl-4-methylimidazole
With a specific gravity of approximately 3.9 as a filler,
Mix WA#400 to 40% by volume and heat to 100℃.
After degassing under vacuum, pour an amount equivalent to 3/4 of the internal volume of the mold into a round bar mold that has been preheated to 120℃.
While rotating at 500 rpm with the central axis of the round bar as the rotation axis, it was cured at 140°C for 4 hours, and further cured at 160°C for 4 hours to form a pipe.
このパイプの比重は約2.3であり、表面の硬度
はロツクウエルＭスケールで101〜104であつた。 The specific gravity of this pipe was approximately 2.3, and the surface hardness was 101 to 104 on the Rockwell M scale.
また、曲げ試験で実施例と比較例を比較した
が、実施例１が比較例１より約５％低かつたが、
他にはほとんど差が見られなかつた。サクシヨン
ボツクスの天板を長網式抄紙機にとり付けて約１
カ月運転したが、重量変化、表面状態とも実施例
と比較例で差が見られなかつた。 In addition, when comparing Example and Comparative Example in a bending test, Example 1 was approximately 5% lower than Comparative Example 1, but
There were almost no other differences. Attach the top plate of the suction box to the Fourdrinier paper machine for about 1 hour.
After operating for a month, no difference was observed between the Example and the Comparative Example in terms of weight change and surface condition.
実施例および比較例により説明したごとく、本
発明になる軽量合成樹脂成形品は、その比重が
1.1〜1.2と合成樹脂とほとんど同じ程度である
が、その表面に比重の大きい充てん剤のち密な層
を有するため、表面の硬度が合成樹脂に比べて大
幅に向上しており比重の大きい充てん剤のみを充
てんした合成樹脂とほとんど大差ないものとなつ
ている。またサクシヨンボツクスの天板で比較し
たように表面の耐摩耗性にもすぐれており、その
曲げ強さも従来品と変らず、すぐれたものであつ
た。 As explained in the Examples and Comparative Examples, the lightweight synthetic resin molded product of the present invention has a specific gravity of
1.1 to 1.2, which is almost the same as synthetic resin, but because it has a dense layer of filler with high specific gravity on its surface, the surface hardness is significantly improved compared to synthetic resin, making it a filler with high specific gravity. It is almost the same as a synthetic resin filled with solids. In addition, as compared with the top plate of the Suction Box, the surface has excellent abrasion resistance, and its bending strength is as good as that of conventional products.
特に本発明によつて得られる抄紙機用サクシヨ
ンボツクスの天板は、最も大きい比重と最も小さ
い比重との差を1.0上とした少なくとも２種類の
充てん剤を用いたため、一回の注形作業で成形で
き、抄紙機の金網に接触する面に耐摩耗性にすぐ
れた比重の大きい充てん剤のち密な層が形成さ
れ、他の部分は比重の小さい充てん剤から成る層
が形成されるため全体としては比重が小さく、す
なわち軽量になつているが、長期間の連続使用に
耐えるすぐれたものである。 In particular, the top plate of the paper machine suction box obtained according to the present invention uses at least two types of fillers with a difference of 1.0 or more between the highest specific gravity and the lowest specific gravity, so that only one casting operation is required. A dense layer of high-density filler with excellent abrasion resistance is formed on the surface that comes into contact with the wire mesh of the paper machine, and a layer of low-specific gravity filler is formed on the other parts, so the overall Although it has a low specific gravity, that is, it is lightweight, it has an excellent ability to withstand continuous use for a long period of time.
第１図はサクシヨンボツクス天板の一部を拡大
した斜視図である。
符号の説明１…サクシヨンボツクス天板。
FIG. 1 is an enlarged perspective view of a portion of the suction box top plate. Explanation of symbols 1...Suction box top plate.
Claims (1)
1.0以上とした少なくとも２種類の充てん剤と、
注形硬化可能な合成樹脂とを、比重の大きい充て
ん剤を偏在させて硬化させてなる軽量合成樹脂成
形品。 ２ 軽量合成樹脂成形品が、抄紙機用サクシヨン
ボツクスの天板、支持条片またはフオーメーシヨ
ンボードである特許請求の範囲第１項記載の軽量
合成樹脂成形品。[Claims] 1. The difference between the largest specific gravity and the smallest specific gravity
at least two types of fillers with a value of 1.0 or more;
A lightweight synthetic resin molded product made by curing cast-curable synthetic resin with unevenly distributed fillers of high specific gravity. 2. The lightweight synthetic resin molded article according to claim 1, wherein the lightweight synthetic resin molded article is a top plate, support strip, or formation board of a suction box for a paper machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16188679A JPS5684911A (en) | 1979-12-12 | 1979-12-12 | Light weight synthetic resin form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16188679A JPS5684911A (en) | 1979-12-12 | 1979-12-12 | Light weight synthetic resin form |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5684911A JPS5684911A (en) | 1981-07-10 |
| JPS637926B2 true JPS637926B2 (en) | 1988-02-19 |
Family
ID=15743852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16188679A Granted JPS5684911A (en) | 1979-12-12 | 1979-12-12 | Light weight synthetic resin form |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5684911A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2258235A (en) * | 1991-07-30 | 1993-02-03 | Filon Products Ltd | Thermosetting resin composition for fibre reinforced products |
| JP2002018865A (en) * | 2000-07-11 | 2002-01-22 | Nitto Jushi Kogyo Kk | Resin panel and method for manufacturing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0745194B2 (en) * | 1988-10-26 | 1995-05-17 | 松下電工株式会社 | Photocurable resin and method for forming three-dimensional shape |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4861569A (en) * | 1971-12-03 | 1973-08-29 | ||
| JPS49119911A (en) * | 1973-03-19 | 1974-11-15 |
-
1979
- 1979-12-12 JP JP16188679A patent/JPS5684911A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4861569A (en) * | 1971-12-03 | 1973-08-29 | ||
| JPS49119911A (en) * | 1973-03-19 | 1974-11-15 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2258235A (en) * | 1991-07-30 | 1993-02-03 | Filon Products Ltd | Thermosetting resin composition for fibre reinforced products |
| GB2258235B (en) * | 1991-07-30 | 1995-10-11 | Filon Products Ltd | Improvements in or relating to fibre-reinforced plastics compositions |
| JP2002018865A (en) * | 2000-07-11 | 2002-01-22 | Nitto Jushi Kogyo Kk | Resin panel and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5684911A (en) | 1981-07-10 |
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