JPH0725585B2 - Method for manufacturing gas-adsorptive flameproof insulation - Google Patents
Method for manufacturing gas-adsorptive flameproof insulationInfo
- Publication number
- JPH0725585B2 JPH0725585B2 JP2280266A JP28026690A JPH0725585B2 JP H0725585 B2 JPH0725585 B2 JP H0725585B2 JP 2280266 A JP2280266 A JP 2280266A JP 28026690 A JP28026690 A JP 28026690A JP H0725585 B2 JPH0725585 B2 JP H0725585B2
- Authority
- JP
- Japan
- Prior art keywords
- waste
- flame
- adsorptive
- fiber
- gas
- 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 - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title description 3
- 238000009413 insulation Methods 0.000 title 1
- 239000000835 fiber Substances 0.000 claims description 42
- 239000002699 waste material Substances 0.000 claims description 40
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 16
- 239000011810 insulating material Substances 0.000 claims description 11
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 10
- 239000003063 flame retardant Substances 0.000 claims description 10
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000010025 steaming Methods 0.000 claims description 4
- 238000003763 carbonization Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 20
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 9
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000001877 deodorizing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229920002972 Acrylic fiber Polymers 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
- Inorganic Fibers (AREA)
Description
本発明は特にポリアクリロニトリル糸屑を含んでなる繊
維屑を利用したガス吸着性耐炎化断熱材の製造方法に関
する。The present invention particularly relates to a method for producing a gas-adsorptive flameproof heat insulating material using a fiber waste containing a polyacrylonitrile yarn waste.
【従来の技術】 ポリアクリロニトリルを主原料とするパイル織物は、基
材にポリアクリロニトリル繊維や該繊維を含む混合繊維
を植設することによって製造されるが、その場合、植設
された繊維の先端部を切断して一定長に揃えるシャーリ
ングを行った時に、その切断された繊維の屑であるパイ
ル屑が大量に生じる。 この種のパイル屑は、ポリアクリロニトリル糸の繊維屑
か若しくは該繊維屑と木綿等の天然繊維との混合物であ
るが、従来においては、これを有効に活用する技術や用
途が特に無かったため、単なる産業廃棄物として例えば
焼却したり地中に埋めたりする等の方法により処理され
るのが通例であった。 然るに、主としてアクリル繊維屑からなる上記のような
パイル屑を焼却すると、ポリアクリロニトリルの熱分解
に伴って人体にとって有害なガスが多量に発生するとい
う問題がある。また、パイル屑を地中に埋めるにして
も、該パイル屑は非常に崇高いものであるため、広い埋
め立て用地が必要となる。 このような事情から、現在のところ何れのアクリルパイ
ル生産地においても、パイル製造に伴って生じる上記の
ような繊維屑の処理に困難を来しているのが実情であ
る。2. Description of the Related Art A pile fabric mainly composed of polyacrylonitrile is produced by implanting a polyacrylonitrile fiber or a mixed fiber containing the fiber in a base material. In this case, the tip of the planted fiber is used. When shearing is performed by cutting the parts and aligning them to a certain length, a large amount of pile scraps, which are scraps of the cut fibers, are generated. This kind of pile waste is a fiber waste of polyacrylonitrile yarn or a mixture of the fiber waste and natural fibers such as cotton, but in the past, there has been no particular technique or application for effectively utilizing this, and therefore, simply It is customary to treat industrial waste by a method such as incineration or burial in the ground. However, there is a problem that when the pile waste mainly composed of acrylic fiber waste is incinerated, a large amount of gas harmful to the human body is generated due to the thermal decomposition of polyacrylonitrile. Further, even if pile waste is buried in the ground, the pile waste is very noble, and thus a large landfill site is required. Under these circumstances, at present, it is difficult to treat the above-mentioned fiber waste generated in pile production in any acrylic pile production site.
一方、特開昭50−72891号公報或いは特開昭62−297266
号公報には、上記のようなアクリル繊維等の合成繊維を
原料として利用した活性炭の製造方法が提案されている
が、上記のような合成繊維を原料とした活性炭は、ヤシ
殻活性炭などの天然原料から得られる活性炭に比べて吸
着能が非常に小さく、実用性に欠けるものであった。 したがって、依然として上記のような繊維屑の処理の解
消を図るに到っていないのが現状である。 本発明は、上記のような問題に対処するもので、パイル
製造時に生じるポリアクリロニトリルの糸屑を原料とす
る実用性に富んだ新規なガス吸着性耐炎化断熱材の製造
方法を提供することにより、従来においては廃棄するし
かなかったポリアクリロニトリル繊維屑の有効利用を図
り、併せて上記のようなパイル屑の処理問題を一挙に解
消することを目的とする。On the other hand, JP-A-50-72891 or JP-A-62-297266.
In the publication, there is proposed a method for producing activated carbon using synthetic fibers such as acrylic fibers as a raw material. However, the activated carbon produced from the synthetic fibers as described above is a natural carbon such as coconut shell activated carbon. Compared to activated carbon obtained from the raw material, the adsorption capacity was extremely small, and it lacked practicality. Therefore, it is the current situation that the treatment of the above-mentioned fiber waste is not yet solved. The present invention addresses the above-mentioned problems, and provides a highly practical novel method for producing a gas-adsorptive flame-resistant heat-insulating material, which uses polyacrylonitrile thread waste produced during pile production as a raw material. The purpose of the present invention is to effectively utilize the polyacrylonitrile fiber scraps that have conventionally been discarded, and also to solve the above-described pile scrap disposal problems all at once.
上記目的達成のため、本発明に係るガス吸着性耐炎化断
熱材の製造方法は、ポリアクリロニトリル糸屑を含んで
なる繊維屑を例えば電気炉等の中にセットして200〜400
℃で蒸焼きにすることにより難燃化し、然る後、その難
燃化させた繊維屑を窒素雰囲気中で800〜1200℃に保っ
て炭素化処理を行うことを特徴とする。In order to achieve the above object, the method for producing a gas-adsorptive flame-resistant heat insulating material according to the present invention, a fiber scrap containing polyacrylonitrile yarn scraps is set in, for example, an electric furnace or the like to be 200 to 400
It is characterized in that it is made flame-retardant by steaming at ℃, and after that, the flame-retarded fiber waste is maintained at 800 to 1200 ℃ in a nitrogen atmosphere for carbonization.
上記本発明の構成によれば、ポリアクリロニトリル糸屑
を含んでなる繊維屑を200〜400℃で蒸し焼きすること
で、繊維屑が難燃化、すなわち、炭化するが、この時、
炭化物の表面にカルボキシル基が形成される。 この後、得られた炭化物を窒素雰囲気中で800〜1200℃
に保ってさらに炭素化処理を行うので、上記繊維屑はそ
の当初の形状を保ったままで炭化されるとともに、表面
にカルボキシル基が残った状態で炭化される。 尚、上記炭化繊維屑は、燃えている炎（温度850℃）の
中に５分間投入しても全く燃えず且つ原料にポリアクリ
ロニトリルの糸屑を含んでいることから、単なる炭では
なく炭素繊維化しているものと考えられる。According to the configuration of the present invention, by steaming the fiber waste containing the polyacrylonitrile yarn waste at 200 to 400 ° C., the fiber waste becomes flame-retardant, that is, carbonized.
Carboxyl groups are formed on the surface of the carbide. After that, the obtained carbide is 800 to 1200 ° C. in a nitrogen atmosphere.
Since the fiber waste is carbonized while maintaining its original shape, the carbon waste is carbonized while the carboxyl groups remain on the surface. The carbonized fiber scraps do not burn at all even when placed in a burning flame (temperature 850 ° C.) for 5 minutes, and the raw material contains polyacrylonitrile thread scraps. It is thought that it has become.
以下、本発明の実施例を説明する。 〔第１実施例〕 電気炉の中に100gのパイル繊維屑（ポリアクリロニトリ
ル繊維の糸屑80重量％と綿糸20重量％との混合物）をセ
ットした状態で、空気中において280〜300℃で３時間保
って蒸焼きにすることにより、該パイル繊維屑を難燃化
する。その結果、炭化状態となったパイル繊維屑でなる
固形状の試料Ａが得られた。 〔第２実施例〕 電気炉の中に100gのパイル繊維屑（ポリアクリロニトリ
ル繊維の糸屑80重量％と綿糸20重量％との混合物）をセ
ットした状態で、空気中において280〜300℃で３時間保
つことにより、該パイル繊維屑を難燃化処理する。 次に、このようにして難燃化した糸屑を窒素雰囲気中に
おいて1050〜1100℃で５分間保って炭化させ、然る後、
その炭化させた糸屑を冷却して43gの綿状の試料Ｂを得
た。 〔第３実施例〕 金網の上に上記第１実施例の場合と同様の100gのパイル
繊維屑をセットし、更にその上に別の金網を被せてサン
ドイッチ状にする。そして、この状態で第１実施例と同
様にして空気中において280〜300℃で３時間保つことに
より、該パイル繊維屑を難燃化処理する。この時、上記
サンドイッチ状にセットされた両金網は、難燃化しつつ
ある繊維屑が自己発熱した熱を冷却する働きをすると共
に空気をスムーズに流す働きをするので、上記難燃化処
理が良好に進行してパイル繊維屑が板状態で炭化する。 次に、この板状に炭化したパイル繊維屑を窒素雰囲気中
において1000〜1200℃で５分間加熱して板状の試料Ｃを
得た。 得られた試料Ｃは、850℃の炎の中に５分間入れても全
く燃えなかった。 〔第１比較例〕 電気炉の中に100gのパイル繊維屑（ポリアクリロニトリ
ル繊維の糸屑80重量％と綿糸20重量％との混合物）をセ
ットした状態で、空気中において280〜300℃で３時間保
つことにより、該パイル繊維屑を難燃化処理する。 つぎに、このように難燃化した糸屑を水蒸気賦活して15
gの試料Ｄを得た。 〔第２比較例〕 電気炉の中に100gのパイル繊維屑（ポリアクリロニトリ
ル繊維の糸屑80重量％と綿糸20重量％との混合物）をセ
ットした状態で、窒素雰囲気で1000〜1050℃で３時間保
つことにより、該パイル繊維屑を炭素化処理して、46g
の試料Ｅを得た。 〔効果確認試験〕 次に、上記実施例で得られたガス吸着性耐炎化断熱材の
消臭効果を確認するために行った試験について説明す
る。 試料として、上記第１実施例で得られた試料Ａと、第３
実施例で得られた試料Ｃと、第１比較例で得られた試料
Ｄと、第２比較例で得られた試料Ｅと、試料Ｆとしての
市販の活性炭とを各々1.0gづつ用意し、その各々につい
て、次のような測定を行った。即ち、容量が５のガス
パックの中に試料Ａ（又はC,D,E,F）を入れた上で500〜
600ppmのアンモニアガス（窒素ガスで希釈したもの）を
導入し、その状態で、各試料がアンモニアガスを吸着す
る速度を測定した。 その結果、第１図のグラフに示すように、第１実施例に
係る試料Ａについては、略半日程経過した時点で市販の
活性炭と略同程度の吸着量が得られることが判明した。
また、第３実施例に係る試料Ｃについては、その吸着性
能は活性炭に比べると或る程度劣るが、それでもガスパ
ック中に導入されたアンモニアガスの50％以上を吸着す
ることが判明した。これらのことから、本発明にかかる
製造方法によって得られたガス吸着性耐炎化断熱材が実
用的には十分なアンモニアガスの吸着性能を有すること
が確認された。 一方、第１比較例および第２比較例で得た試料D,Eは、
いずれもアンモニアの吸着性能が不十分で実用性に乏し
いことが判った。 すなわち、本発明にかかるガス吸着性耐炎化断熱材の製
造方法によれば、まず、空気中で蒸し焼きして難燃化し
た時に、表面にカルボキシル基が形成される。そして、
このカルボキシル基が形成された状態で、窒素雰囲気中
で炭素化を図るため、得られた吸着剤には、表面にカル
ボキシル基が残った状態になる。したがって、このカル
ボキシル基によってアンモニアが化学吸着するため、第
１比較例および第２比較例に比べて吸着能力が向上する
と考えられる。 尚、市販の活性炭としては、和光純薬工業株式会社製、
クロマトグラフ用を用いた。 〔第４実施例〕 試料Ｃを厚さ1cmの板状とし、この板状体をベニヤ板の
一側面に密着させたのち、試料Ｃ側からバーナーの炎
（約1000℃）を30分間あてたが、ベニヤ板には、何の変
化も見られなかった。 すなわち、このことから、本発明にかかる製造方法によ
って得られたガス吸着性耐炎化断熱材が通常の活性炭の
ように燃えたりすることなく、十分な断熱性を有するこ
とが判った。Examples of the present invention will be described below. [First Example] 100 g of pile fiber waste (a mixture of 80% by weight of polyacrylonitrile fiber waste and 20% by weight of cotton yarn) was set in an electric furnace at 280-300 ° C in air for 3 The pile fiber waste is made flame-retardant by keeping it steamed for a certain period of time. As a result, a solid sample A composed of carbonized pile fiber scraps was obtained. [Second Example] 100 g of pile fiber waste (a mixture of 80% by weight of polyacrylonitrile fiber waste and 20% by weight of cotton yarn) was set in an electric furnace at 280 to 300 ° C in air for 3 By maintaining the time, the pile fiber waste is treated to be flame-retardant. Next, the thus-flame-retarded yarn waste is carbonized by keeping it at 1050-1100 ° C. for 5 minutes in a nitrogen atmosphere.
The carbonized lint was cooled to obtain 43 g of cotton-like sample B. [Third Embodiment] The same 100 g of pile fiber waste as in the case of the first embodiment is set on a wire net, and another wire net is further covered thereon to form a sandwich. Then, in this state, in the same manner as in the first embodiment, the pile fiber waste is flame-retarded by being kept in air at 280 to 300 ° C. for 3 hours. At this time, since both wire nets set in the sandwich form serve to cool the heat generated by the self-heated fiber scraps that are becoming flame-retardant and to allow air to flow smoothly, the flame-retardant treatment is good. The pile fiber waste is carbonized in a plate state. Next, the plate-shaped pile fiber scraps carbonized into a plate were heated in a nitrogen atmosphere at 1000 to 1200 ° C. for 5 minutes to obtain a plate-shaped sample C. The obtained sample C did not burn at all even when placed in a flame at 850 ° C. for 5 minutes. [First Comparative Example] 100 g of pile fiber waste (a mixture of 80% by weight of polyacrylonitrile fiber waste and 20% by weight of cotton yarn) was set in an electric furnace at 3 ° C in air at 280 to 300 ° C. By maintaining the time, the pile fiber waste is treated to be flame-retardant. Next, the yarn waste thus flame-retarded is activated with steam to
g of sample D was obtained. [Second Comparative Example] 100 g of pile fiber waste (a mixture of 80% by weight of polyacrylonitrile fiber waste and 20% by weight of cotton yarn) was set in an electric furnace and heated at 1000 to 1050 ° C. in a nitrogen atmosphere for 3 hours. The pile fiber waste is carbonized by keeping it for 46 hours.
Sample E was obtained. [Effect Confirmation Test] Next, a test conducted for confirming the deodorizing effect of the gas-adsorptive flameproof heat insulating material obtained in the above Examples will be described. As the sample, the sample A obtained in the first embodiment and the third sample
1.0 g each of the sample C obtained in the example, the sample D obtained in the first comparative example, the sample E obtained in the second comparative example, and the commercially available activated carbon as the sample F were prepared, The following measurements were performed for each of them. That is, the sample A (or C, D, E, F) is put into a gas pack having a capacity of 5 and then 500-
600 ppm of ammonia gas (diluted with nitrogen gas) was introduced, and the rate at which each sample adsorbed ammonia gas was measured in that state. As a result, as shown in the graph of FIG. 1, it was found that the sample A according to the first example had an adsorption amount approximately the same as that of commercially available activated carbon when approximately half a day passed.
Further, it was found that the sample C according to the third example adsorbs 50% or more of the ammonia gas introduced into the gas pack, although its adsorption performance is somewhat inferior to that of activated carbon. From these, it was confirmed that the gas-adsorptive flameproof heat insulating material obtained by the manufacturing method according to the present invention has practically sufficient ammonia gas adsorption performance. On the other hand, the samples D and E obtained in the first comparative example and the second comparative example are
It was found that all of them had poor ammonia adsorption performance and were not practical. That is, according to the method for producing a gas-adsorptive flame-resistant heat insulating material according to the present invention, first, a carboxyl group is formed on the surface when the material is flame-retarded by steaming in air. And
Since carbonization is attempted in a nitrogen atmosphere in the state where the carboxyl group is formed, the obtained adsorbent has the carboxyl group remaining on the surface. Therefore, it is considered that ammonia is chemically adsorbed by the carboxyl group, so that the adsorption ability is improved as compared with the first comparative example and the second comparative example. As commercially available activated carbon, Wako Pure Chemical Industries, Ltd.,
A chromatograph was used. [Fourth Example] Sample C was formed into a plate having a thickness of 1 cm, and this plate was adhered to one side surface of a veneer plate, and then a burner flame (about 1000 ° C) was applied from the sample C side for 30 minutes. , The plywood did not show any change. That is, it was found from this that the gas-adsorptive flameproof heat insulating material obtained by the manufacturing method according to the present invention has sufficient heat insulating property without burning like ordinary activated carbon.
本発明にかかるガス吸着性耐炎化断熱材の製造方法は、
以上のように構成されているので、従来においては廃棄
するしかなかったポリアクリルニトリル繊維屑を有効利
用してパイル屑の処理問題を一挙に解決することができ
る。 すなわち、この製造方法によって得られるガス吸着性耐
炎化断熱材は、高温に耐えるため、耐火構造の建築物の
壁材としては勿論のこと、炉などの内壁材としても十分
使用することができる。 しかも、アンモニアガスの吸着性能にも優れているた
め、アンモニア臭の強いトイレなどの壁材として使用す
れば、耐火性能と合わせて消臭効果も発揮することがで
きる。 勿論、消臭材あるいは吸着剤としても使用することがで
きる。 また、繊維屑を２枚の金網の間にサンドイッチ状に挟み
込んだ状態で蒸焼きにするようにすれば、サンドイッチ
状にセットされた両金網が、難燃化しつつある自己発熱
した繊維屑の熱を冷却する働きをすると共に空気をスム
ーズに流す働きをするので、難燃化処理をより良好に進
行させることができる。The method for producing a gas-adsorptive flameproof heat insulating material according to the present invention,
With the above-described structure, it is possible to effectively solve the problem of pile waste treatment by effectively utilizing the polyacrylonitrile fiber waste that has conventionally been discarded. That is, the gas-adsorptive flame-resistant heat insulating material obtained by this manufacturing method withstands high temperatures, and thus can be sufficiently used not only as a wall material for a building having a fireproof structure, but also as an inner wall material for a furnace or the like. Moreover, since it also has excellent ammonia gas adsorption performance, when used as a wall material for toilets or the like that have a strong ammonia odor, it is possible to exert a deodorizing effect together with fire resistance. Of course, it can also be used as a deodorant or an adsorbent. If the fiber scraps are steamed in a state that they are sandwiched between two wire meshes, both wire meshes set in the sandwich shape will be heated by the heat of the self-heated fiber scraps that are becoming flame-retardant. Since it has a function of cooling the air and a function of smoothly flowing the air, the flame retardant treatment can be more favorably advanced.
第１図は、本発明の実施例および比較例に係る各試料の
吸着効果（消臭効果）確認試験の結果を示すもので、各
試料によるアンモニアガスの吸着速度を示すグラフであ
る。FIG. 1 shows the results of the adsorption effect (deodorizing effect) confirmation test of each sample according to the examples and comparative examples of the present invention, and is a graph showing the adsorption rate of ammonia gas by each sample.
Claims (2)
維屑を200〜400℃で蒸焼きにすることにより難燃化し、
然る後、その難燃化された繊維屑を窒素雰囲気中で800
〜1200℃に保って炭素化処理を行うことを特徴とするガ
ス吸着性耐炎化断熱材の製造方法。1. A flame-retardant material obtained by steaming fiber waste comprising polyacrylonitrile yarn waste at 200 to 400 ° C.,
After that, the flame-retarded fiber waste is 800 in a nitrogen atmosphere.
A method for producing a gas-adsorptive flameproof heat-insulating material, which is characterized by carrying out carbonization treatment while being maintained at a temperature of up to 1200 ° C.
に挟み込んだ状態で蒸焼きにする請求項１に記載のガス
吸着性耐炎化断熱材の製造方法。2. The method for producing a gas-adsorptive flameproof heat insulating material according to claim 1, wherein the fiber scraps are steamed in a state of being sandwiched between two wire nets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2280266A JPH0725585B2 (en) | 1990-10-17 | 1990-10-17 | Method for manufacturing gas-adsorptive flameproof insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2280266A JPH0725585B2 (en) | 1990-10-17 | 1990-10-17 | Method for manufacturing gas-adsorptive flameproof insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04156942A JPH04156942A (en) | 1992-05-29 |
| JPH0725585B2 true JPH0725585B2 (en) | 1995-03-22 |
Family
ID=17622603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2280266A Expired - Fee Related JPH0725585B2 (en) | 1990-10-17 | 1990-10-17 | Method for manufacturing gas-adsorptive flameproof insulation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0725585B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5217831B2 (en) * | 1973-10-30 | 1977-05-18 | ||
| US4772508A (en) * | 1986-01-24 | 1988-09-20 | Brassell Gilbert W | Activated carbon-carbon composite of high surface area and high compressive strength |
-
1990
- 1990-10-17 JP JP2280266A patent/JPH0725585B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04156942A (en) | 1992-05-29 |
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