JPS621040B2 - - Google Patents
Info
- Publication number
- JPS621040B2 JPS621040B2 JP55135213A JP13521380A JPS621040B2 JP S621040 B2 JPS621040 B2 JP S621040B2 JP 55135213 A JP55135213 A JP 55135213A JP 13521380 A JP13521380 A JP 13521380A JP S621040 B2 JPS621040 B2 JP S621040B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- carbon fiber
- pvp
- weight
- fibers
- 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
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 25
- 239000004917 carbon fiber Substances 0.000 claims description 25
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 21
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 18
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002964 rayon Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Paper (AREA)
Description
本発明は、抄紙用炭素繊維材料に関するもので
ある。従来、炭素繊維は、パルプ、レーヨン、或
いはガラスと混抄し、導電性紙、耐熱性紙、振動
板等として使用されている。ここで用いられる炭
素繊維は、パルプ等に対する混合割合が通常50重
量％以下である。抄紙時にバインダーを使用する
ことにより炭素繊維を90重量％以上含有する紙も
製造されているが、ポリビニルアルコール
（PVAと略記する）をバインダーとして使用した
場合、紙の性能向上のため、PVA量を５〜30重
量％も添加する必要があつた。本発明はこのよう
な問題を解決するものである。
すなわち本発明は、１〜10重量％のポリビニル
ピロリドン（以下PVPと略記する）で表面被覆し
てなる抄紙用炭素繊維材料である。
本発明の抄紙用炭素繊維材料は、水に対する分
散性が優れており、且つ抄紙時には表面被覆した
PVPがバイタンダーとして作用して均一な抄紙が
できる。しかも抄紙時に炭素繊維含有量が90重量
％以上と、炭素繊維含有量が多い場合でも、少量
のPVP被覆で抄紙可能である。
PVPによる炭素繊維の被覆は、PVPの0.5〜15
重量％溶液に炭素繊維を浸漬通過、又は該溶液を
スプレーした後、赤外線ランプ、熱風等で脱溶媒
することによつて行われる。PVPの溶剤として
は、水、アルコール（メタノール、エタノールな
ど）、クロロホルムのほか、アルコールとアセト
ンとの混合溶媒が使用される。本発明において炭
素繊維とは、アクリロニトリル系繊維、レーヨ
ン、ポリビニルアルコール繊維、ピツチ系繊維を
原料として周知の方法で製造された繊維である。
本発明の炭素繊維材料は抄紙に際し繊維長２〜50
mmで好適に使用される。２mmより短い場合、炭素
繊維単独では抄紙不能であり又50mm超の場合、抄
紙不能となる。更に、何れの場合も水への分散性
が低下する。繊維径は20μ以下のものが使用され
る。これより太くなると抄紙し難い。
本発明炭素繊維材料の抄紙には通常の抄紙方法
が採られ、他の繊維材料、例えばパルプ、レーヨ
ン等と通常のビーターで叩解後、長網、円網等で
金網で抄造される。
このようにして抄紙される炭素繊維材料につい
てPVP及びPVPの適正有効被覆量の範囲を対比し
て例示すると下表の通りである。
The present invention relates to carbon fiber materials for paper making. Conventionally, carbon fibers have been mixed with pulp, rayon, or glass and used as conductive paper, heat-resistant paper, diaphragms, and the like. The carbon fiber used here is usually mixed in a proportion of 50% by weight or less with respect to pulp and the like. Paper containing over 90% carbon fiber by weight is manufactured by using a binder during paper making, but when polyvinyl alcohol (abbreviated as PVA) is used as a binder, it is necessary to reduce the amount of PVA to improve paper performance. It was necessary to add 5 to 30% by weight. The present invention solves these problems. That is, the present invention is a carbon fiber material for papermaking whose surface is coated with 1 to 10% by weight of polyvinylpyrrolidone (hereinafter abbreviated as PVP). The carbon fiber material for papermaking of the present invention has excellent dispersibility in water, and is coated on the surface during papermaking.
PVP acts as a bitander, making it possible to make uniform paper. Moreover, even if the carbon fiber content is 90% by weight or more during paper making, even if the carbon fiber content is high, paper can be made with a small amount of PVP coating. Coating of carbon fiber with PVP is 0.5-15% of PVP
This is carried out by immersing carbon fibers in a weight percent solution, or by spraying the solution, and then removing the solvent using an infrared lamp, hot air, or the like. As a solvent for PVP, water, alcohol (methanol, ethanol, etc.), chloroform, and a mixed solvent of alcohol and acetone are used. In the present invention, carbon fibers are fibers manufactured by a known method using acrylonitrile fibers, rayon, polyvinyl alcohol fibers, and pitch fibers as raw materials.
The carbon fiber material of the present invention has a fiber length of 2 to 50 during paper making.
Preferably used in mm. If it is shorter than 2 mm, paper cannot be made using carbon fiber alone, and if it exceeds 50 mm, paper cannot be made. Furthermore, in either case, the dispersibility in water decreases. The fiber diameter used is 20μ or less. If it is thicker than this, it will be difficult to make paper. The paper made of the carbon fiber material of the present invention is made using a conventional paper making method, and after being beaten with other fiber materials such as pulp or rayon using a common beater, the paper is made into paper using a fourdrinier, circular mesh, or the like. The table below compares and illustrates the range of PVP and the appropriate effective coating amount of PVP for the carbon fiber material made into paper in this manner.
【表】【table】
【表】
第１表のように炭素繊維含量が多い50重量％以
上抄紙の場合でもPVP被覆量は１〜３重量％で抄
紙可能であり、３〜10重量％被覆量で更に良好な
抄紙性が得られる。これに対し、PVAはPVPの
３倍量程度の添加を必要とする。
尚炭素繊維が50重量％以下の場合はPVP、
PVA等のバインダーを必要としない場合もあ
る。以上のようにPVP被覆炭素繊維は、炭素繊維
紙の製造に非常に有効である。
以下実施例について示す。％は重量％である。
実施例 １
アクリロニトリル97％、アクリル酸メチルエス
テル３％の重合体組成のアクリロニトリル系繊維
を予備酸化及び炭化して得た炭素繊維ストランド
（繊維径７μｍ、12000フイラメント）をPVP（分
子量４×104）３％メチルアルコール溶液中に導
入して引出し、熱風にて乾燥し、PVP被覆量を
3.5％のストランドを得た。このストランドを繊
維長６mmに切断し、抄紙用チヨツプドストランド
とした。
実施例 ２
実施例１で得た繊維材料を紙料濃度3.0％で水
に分散させ、通常のビーターで叩解後、長網式抄
紙機で抄紙した。得られた炭素繊維紙は坪量30
ｇ／m2、厚み0.15〜0.19mm、引張強力101ｇであ
つた（試験片巾1.5cm、長さ８mm）。比較例とし
て、PVP被覆量0.5％の炭素繊維材料を実施例２
と同様の方法で抄紙を試みたが分散性不良で抄紙
できなかつた。
又、PVA10％で被覆した炭素繊維チヨツプド
ストランドを使用し、同様にして抄紙した炭素繊
維紙は坪量30ｇ／m2、厚み0.18mm、引張強力71ｇ
であつた。[Table] As shown in Table 1, even in the case of paper making with a high carbon fiber content of 50% by weight or more, paper can be made with a PVP coating amount of 1 to 3% by weight, and even better paper-making properties can be obtained with a PVP coating amount of 3 to 10% by weight. is obtained. On the other hand, PVA requires addition of about three times the amount of PVP. In addition, if carbon fiber is less than 50% by weight, PVP,
In some cases, a binder such as PVA is not required. As described above, PVP-coated carbon fibers are very effective in producing carbon fiber paper. Examples will be shown below. % is by weight. Example 1 A carbon fiber strand (fiber diameter 7 μm, 12000 filaments) obtained by pre-oxidizing and carbonizing acrylonitrile fiber having a polymer composition of 97% acrylonitrile and 3% acrylic acid methyl ester was made into PVP (molecular weight 4×10 4 ). Introduce it into a 3% methyl alcohol solution, pull it out, dry it with hot air, and measure the PVP coverage.
Obtained 3.5% strands. This strand was cut into a fiber length of 6 mm to obtain a chopped strand for paper making. Example 2 The fiber material obtained in Example 1 was dispersed in water at a stock concentration of 3.0%, beaten with a conventional beater, and then made into paper using a fourdrinier paper machine. The resulting carbon fiber paper has a basis weight of 30
g/m 2 , thickness 0.15 to 0.19 mm, and tensile strength 101 g (test piece width 1.5 cm, length 8 mm). As a comparative example, a carbon fiber material with a PVP coating amount of 0.5% was used in Example 2.
I tried to make paper using the same method as above, but the paper could not be made due to poor dispersion. Carbon fiber paper made in the same manner using chopped carbon fiber strands coated with 10% PVA has a basis weight of 30 g/m 2 , a thickness of 0.18 mm, and a tensile strength of 71 g.
It was hot.
Claims (1)
被覆してなる抄紙用炭素繊維材料。1 A carbon fiber material for paper making whose surface is coated with 1 to 10% by weight of polyvinylpyrrolidone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55135213A JPS5761800A (en) | 1980-09-30 | 1980-09-30 | Papermaking carbon fiber material and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55135213A JPS5761800A (en) | 1980-09-30 | 1980-09-30 | Papermaking carbon fiber material and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5761800A JPS5761800A (en) | 1982-04-14 |
| JPS621040B2 true JPS621040B2 (en) | 1987-01-10 |
Family
ID=15146477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55135213A Granted JPS5761800A (en) | 1980-09-30 | 1980-09-30 | Papermaking carbon fiber material and method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5761800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022091268A1 (en) | 2020-10-28 | 2022-05-05 | Ykk株式会社 | Slider for reverse opening-type slide fastener |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH076159B2 (en) * | 1986-06-27 | 1995-01-30 | 東邦レーヨン株式会社 | Conductive mixed paper for EMI shield material |
| US5340492A (en) * | 1990-11-26 | 1994-08-23 | The Procter & Gamble Company | Shaped solid made with a rigid, interlocking mesh of neutralized carboxylic acid |
| DE69214820T2 (en) * | 1991-07-15 | 1997-04-10 | Procter & Gamble | A BODY DETERGENT FREEZER MADE FROM A NEUTRALIZED CARBON ACID SOLID, INTERMITTING MESH |
| JPH05222394A (en) * | 1991-12-20 | 1993-08-31 | Kao Corp | Production of palm kernel oil fatty acid or palm oil fatty acid and production of soap using such fatty acid |
| US5225097A (en) * | 1992-03-20 | 1993-07-06 | The Procter & Gamble Company | Skin pH freezer bar and process |
| US5227086A (en) * | 1992-03-20 | 1993-07-13 | The Procter & Gamble Company | Framed skin pH cleansing bar |
| US5262079A (en) * | 1992-03-20 | 1993-11-16 | The Procter & Gamble Company | Framed neutral pH cleansing bar |
| US5225098A (en) * | 1992-03-20 | 1993-07-06 | The Procter & Gamble Company | Neutral pH freezer bar and process |
-
1980
- 1980-09-30 JP JP55135213A patent/JPS5761800A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022091268A1 (en) | 2020-10-28 | 2022-05-05 | Ykk株式会社 | Slider for reverse opening-type slide fastener |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5761800A (en) | 1982-04-14 |
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