JPS6153378B2 - - Google Patents
Info
- Publication number
- JPS6153378B2 JPS6153378B2 JP15255981A JP15255981A JPS6153378B2 JP S6153378 B2 JPS6153378 B2 JP S6153378B2 JP 15255981 A JP15255981 A JP 15255981A JP 15255981 A JP15255981 A JP 15255981A JP S6153378 B2 JPS6153378 B2 JP S6153378B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- thermosetting synthetic
- phenolic resin
- fiber
- solvent
- 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
- 239000000463 material Substances 0.000 claims description 21
- 229920003002 synthetic resin Polymers 0.000 claims description 19
- 239000000057 synthetic resin Substances 0.000 claims description 19
- 229920001187 thermosetting polymer Polymers 0.000 claims description 17
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 16
- 229920001568 phenolic resin Polymers 0.000 claims description 16
- 239000005011 phenolic resin Substances 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 239000011162 core material Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Macromonomer-Based Addition Polymer (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Description
本発明は、ガラス繊維、炭素繊維等の補強繊維
に未硬化フエノール樹脂を含浸させた繊維強化熱
硬化性合成樹脂素材から、例えば切断用砥石車の
芯材等の製品を打抜いた残材を利用して熱硬化性
合成樹脂原料を製造する方法に関する。
例えば、高い靭性を要求される切断用砥石車の
芯材は、ガラス繊維を織製した織布に未硬化フエ
ノール樹脂を溶剤で溶かして含浸させたのち乾燥
して溶剤を揮発させた繊維強化熱硬化性合成樹脂
素材を円形に打抜き、これを複数枚積層して加熱
下において加圧成形して含浸させた合成樹脂を架
橋反応より硬化させて製造するのであるが、円形
に打抜いた後に残る打抜き屑は未反応のフエノー
ル樹脂が付着しているため、例えばセメントの補
強材として使用することもできず、産業排棄物と
して処分されているのが現状である。しかし、こ
の打抜き屑は、通常、素材重量の25〜30％に達
し、しかも、その成分は、重量約30％の未反応フ
エノール樹脂と約70％のガラス繊維からなり、い
ずれも極めて高価なものであつて、その再生利用
法の開発が望まれていた。
本発明は、このような要求に応じて完成された
ものであつて、繊維強化熱硬化性合成樹脂製素材
の残材を極く簡単な工程で熱硬化性合成樹脂原料
として再生させる方法を提供することを目的とす
るものである。
以下、本発明の一実施例を工程順序に従つて説
明する。
Ａ：破砕工程
ガラス繊維を平織りしてなる織布に25〜45重
量パーセントの未硬化フエノール樹脂を含浸さ
せた繊維強化熱硬化性合成樹脂素材から切断用
砥石の芯材を打抜いた残材をクラツシヤで１〜
2.5mm角程度の小片に破砕する。このとき、破
砕部の温度を50度Ｃ以下に保つことにより、補
強繊維に含浸した未硬化フエノール樹脂が軟化
してクラツシヤの刃に付着するのを防止し、破
砕を円滑に行なうことができる。
Ｂ：混合
破砕した素材に、約５重量％の未硬化フエノ
ール樹脂と適量の溶剤及び必要に応じて着色剤
を加え、ミキサで撹拌し、十分に混合する。溶
剤の添加により、素材中の未硬化フエノール樹
脂は再溶解し、かつ、撹拌により織目が解けて
１〜2.5mm程度の針状のガラス繊維となり、こ
れに液状の未硬化フエノール樹脂が付着した状
態となる。
Ｃ：乾燥
コンベア上に平らに広げて乾燥機内を通し、
溶剤を揮発させて乾燥する。
Ｄ：針状化
再びミキサで撹拌することにより、乾燥工程
で生じた塊状物を砕き、１乃至数本のガラス繊
維毎に乾燥した未硬化フエノール樹脂が付着し
た均質な針状とする。
Ｅ：加熱
コンベアに載せて約100度Ｃに保たれた加熱
室内を通して、残留している溶剤を完全に揮発
させ、かつ、未硬化フエノール樹脂の架橋反応
を途中まで進めて製品の成形工程における硬化
時間を短縮し得るようにする。
上記Ａ乃至Ｅの工程を経て製造した熱硬化性合
成樹脂原料を用いて加熱下で加圧成形したテスト
ピースの試験結果は次表の通りである。
The present invention utilizes residual material obtained by punching out products, such as the core material of cutting wheels, from a fiber-reinforced thermosetting synthetic resin material in which reinforcing fibers such as glass fibers and carbon fibers are impregnated with uncured phenolic resin. This invention relates to a method for producing a thermosetting synthetic resin raw material. For example, the core material of cutting wheels, which require high toughness, is made by impregnating a woven glass fiber cloth with uncured phenolic resin dissolved in a solvent, then drying it and volatilizing the solvent. It is manufactured by punching out a circular shape from a curable synthetic resin material, stacking multiple sheets, press-molding them under heat, and hardening the impregnated synthetic resin through a cross-linking reaction. Since the punching scraps have unreacted phenolic resin attached to them, they cannot be used, for example, as a reinforcing material for cement, and are currently disposed of as industrial waste. However, this punching waste usually amounts to 25-30% of the weight of the material, and its components are approximately 30% of the weight of unreacted phenolic resin and approximately 70% of glass fiber, both of which are extremely expensive. Therefore, it has been desired to develop a method for recycling it. The present invention has been completed in response to these demands, and provides a method for recycling the remaining materials of fiber-reinforced thermosetting synthetic resin materials into thermosetting synthetic resin raw materials through an extremely simple process. The purpose is to Hereinafter, one embodiment of the present invention will be described in accordance with the process order. A: Crushing process The core material of a cutting wheel is punched out from a fiber-reinforced thermosetting synthetic resin material made by plain-weaving glass fibers and impregnated with 25 to 45 percent by weight of uncured phenolic resin. 1~ in Kuratsusha
Crush into small pieces approximately 2.5mm square. At this time, by keeping the temperature of the crushing section below 50 degrees Celsius, the uncured phenolic resin impregnated into the reinforcing fibers is prevented from softening and adhering to the crusher blade, and crushing can be carried out smoothly. B: Mixing To the crushed material, add about 5% by weight of uncured phenolic resin, an appropriate amount of solvent, and a coloring agent if necessary, and stir with a mixer to mix thoroughly. By adding the solvent, the uncured phenolic resin in the material was redissolved, and the weave was dissolved by stirring to form needle-shaped glass fibers of about 1 to 2.5 mm, to which the liquid uncured phenolic resin was attached. state. C: Drying Spread it flat on the conveyor and pass it through the dryer.
Evaporate the solvent and dry. D: Formation into needles By stirring again with a mixer, the lumps generated in the drying process are broken up into homogeneous needles in which the dried uncured phenolic resin is attached to each one to several glass fibers. E: Heating Placed on a conveyor and passed through a heating chamber maintained at approximately 100 degrees Celsius, the remaining solvent is completely volatilized and the crosslinking reaction of the uncured phenolic resin is progressed halfway to harden it during the product molding process. Make it possible to shorten the time. The test results of test pieces formed by pressure molding under heat using the thermosetting synthetic resin raw materials produced through the steps A to E above are shown in the following table.
【表】
上表の数値は、新しいフエノール樹脂とガラス
繊維を用いて製造したガラス繊維入りのフエノー
ル樹脂原料により成形したテストピースの試験結
果と同等であつて、上記Ａ乃至Ｅの工程により製
造した原料を用いて、例えば、マンホールの蓋等
の高い強度及び耐久性が要求される製品を製造し
得ることが確認された。
上記実施例によつて具体的に説明したように、
本発明にかかる繊維強化熱硬化性合成樹脂素材の
残材を利用した熱硬化性合成樹脂原料の製造方法
は、ガラス繊維、炭素繊維等の補強繊維にフエノ
ール樹脂、不飽和ポリエステル樹脂等の未硬化熱
硬化性合成樹脂を含浸させた繊維強化熱硬化性合
成樹脂素材の残材を、小片に破砕し、適量の未硬
化フエノール樹脂と溶剤を添加して撹拌混合した
のち、前記溶剤を揮発させて乾燥することを要旨
とするものであつて、極めて簡単な工程で繊維強
化熱硬化性合成樹脂素材の残材から熱硬化性合成
樹脂原料を製造することができ、新しい補強繊維
及び樹脂を使用する場合に比べて製造コストを大
幅に低減することが可能となるばかりでなく、従
来、排棄されていた残材を再生するものであつ
て、省資源上極めて有効な発明である。[Table] The values in the table above are equivalent to the test results of test pieces molded from glass fiber-containing phenolic resin raw materials manufactured using new phenolic resin and glass fiber, and manufactured by the steps A to E above. It has been confirmed that the raw material can be used to produce products requiring high strength and durability, such as manhole covers, for example. As specifically explained in the above embodiment,
The method for producing a thermosetting synthetic resin raw material using the residual material of a fiber-reinforced thermosetting synthetic resin material according to the present invention is a method for producing a thermosetting synthetic resin raw material using residual materials of a fiber-reinforced thermosetting synthetic resin material. The remaining material of the fiber-reinforced thermosetting synthetic resin material impregnated with the thermosetting synthetic resin is crushed into small pieces, an appropriate amount of uncured phenolic resin and a solvent are added, stirred and mixed, and the solvent is evaporated. The main feature is drying, and thermosetting synthetic resin raw materials can be produced from the residue of fiber-reinforced thermosetting synthetic resin materials in an extremely simple process, and new reinforcing fibers and resins can be used. This invention not only makes it possible to significantly reduce manufacturing costs compared to the conventional method, but also regenerates leftover materials that were conventionally discarded, making it an extremely effective invention in terms of resource conservation.
Claims (1)
フエノール樹脂を含浸させた繊維強化熱硬化性合
成樹脂素材の残材を、小片に破砕し、適量の未硬
化フエノール樹脂と溶剤を添加して撹拌混合した
のち、前記溶剤を揮発させて乾燥することを特徴
とする繊維強化熱硬化性合成樹脂素材の残材を利
用した熱硬化性合成樹脂原料の製造方法。1. Crush the remaining material of fiber-reinforced thermosetting synthetic resin material, which is made by impregnating reinforcing fibers such as glass fibers and carbon fibers with uncured phenolic resin, into small pieces, add an appropriate amount of uncured phenolic resin and a solvent, and stir. A method for producing a thermosetting synthetic resin raw material using a residual material of a fiber-reinforced thermosetting synthetic resin material, characterized in that after mixing, the solvent is evaporated and dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56152559A JPS5853951A (en) | 1981-09-26 | 1981-09-26 | Preparation of raw material for thermosetting synthetic resin using remaining material of fiber-reinforced thermosetting synthetic resin material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56152559A JPS5853951A (en) | 1981-09-26 | 1981-09-26 | Preparation of raw material for thermosetting synthetic resin using remaining material of fiber-reinforced thermosetting synthetic resin material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5853951A JPS5853951A (en) | 1983-03-30 |
| JPS6153378B2 true JPS6153378B2 (en) | 1986-11-17 |
Family
ID=15543118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56152559A Granted JPS5853951A (en) | 1981-09-26 | 1981-09-26 | Preparation of raw material for thermosetting synthetic resin using remaining material of fiber-reinforced thermosetting synthetic resin material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5853951A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61152585A (en) * | 1984-12-24 | 1986-07-11 | パ−フエクトデ−タ− コ−ポレイシヨン | Housing vessel for floppy disk |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4211445C2 (en) * | 1991-07-03 | 1995-04-20 | Ruetgerswerke Ag | Process for reusing thermosets containing fibers |
| JPH07132562A (en) * | 1993-11-09 | 1995-05-23 | Hiroshima Pref Gov | Preparation of frp chip-reinforced plastic |
| JPH08142211A (en) * | 1994-11-25 | 1996-06-04 | Takiron Co Ltd | Synthetic resin molded object |
| JP4862528B2 (en) * | 2006-07-19 | 2012-01-25 | パナソニック株式会社 | Electrochemical element |
| DE102011081374A1 (en) * | 2011-08-23 | 2013-02-28 | Sgl Carbon Se | A method of making a carbon fiber reinforced plastic molded article using recycled carbon fiber reinforced plastic |
| CN115594940B (en) * | 2022-10-13 | 2024-02-02 | 韶关辰锐研磨材料有限公司 | Screen cloth matrix and production method and application thereof |
-
1981
- 1981-09-26 JP JP56152559A patent/JPS5853951A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61152585A (en) * | 1984-12-24 | 1986-07-11 | パ−フエクトデ−タ− コ−ポレイシヨン | Housing vessel for floppy disk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5853951A (en) | 1983-03-30 |
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