JP2005306931A - Fluororubber composition and sealant comprising the composition - Google Patents
Fluororubber composition and sealant comprising the composition Download PDFInfo
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Abstract
Description
本発明は、フッ素ゴム組成物および同組成物からなるシール材に関するものである。 The present invention relates to a fluororubber composition and a sealing material comprising the composition.
従来、水道機器や食品加工装置で使用されるシール材の材料としては、EPDM、ブチルゴム(IIR)、水素添加ニトリルゴム(HNBR)、ウレタンゴム(U)、フッ素ゴム(FKM)、シリコーンゴム(VMQ)等が知られている。これらは、Ｏリング、ガスケット、パッキンなどのシール材に使用されている。 Conventional sealing materials used in water supply equipment and food processing equipment include EPDM, butyl rubber (IIR), hydrogenated nitrile rubber (HNBR), urethane rubber (U), fluoro rubber (FKM), and silicone rubber (VMQ). ) Etc. are known. These are used for sealing materials such as O-rings, gaskets, and packings.
上記した材料のシール材を水道機器や、食品分野の製造加工プラント・装置などに使用する場合には、次のような問題がある。すなわち、各種の飲料の製造工場において、ジュースなどの複数種類の製品は、同じ飲料製造ラインを用いて生産されているため、ある飲料製品を製造した際の果汁成分等のニオイが、シール材に付着し(以下、「着香現象」という。)、そのシール材を介して、次に製造する飲料製品に移り、その品質を低下させるという問題がある。 When the sealing material of the above-mentioned material is used for water supply equipment, a manufacturing processing plant / device in the food field, there are the following problems. That is, in various beverage manufacturing factories, since multiple types of products such as juice are produced using the same beverage production line, the odor such as fruit juice components when a certain beverage product is manufactured becomes a sealing material. There is a problem that it adheres (hereinafter referred to as “flavoring phenomenon”), moves to a beverage product to be produced next through the sealing material, and lowers its quality.
上記した着香現象のために、シール材の交換頻度が上がり、メンテナンスコストの増大を引き起こしたり、或いは、上記したニオイの他飲料製品への移りを確実に防止するために別の製造ラインを構築したりすることが必要となり、飲料製品の製造コストが増大する。このため、着香しないシール材が要求されている。 Due to the above-mentioned fragrance phenomenon, the frequency of replacement of the sealing material is increased, causing an increase in maintenance costs, or constructing another production line to reliably prevent the above-mentioned odor from moving to other beverage products. The production cost of the beverage product increases. For this reason, the sealing material which is not scented is requested | required.
また、食品や飲料製品の加工プラント・装置の大型化や複雑化、ライン化が進むなかで、その消毒や洗浄方法は、装置全体を分解し滅菌洗浄するという従来の方法に代わり、装置、設備の分解をせずに、自動洗浄を可能とするCIP(Cleaning in Place)システムが導入されている。 In addition, as food and beverage product processing plants and equipment are becoming larger, more complex, and in line, the disinfection and cleaning methods are replaced with conventional methods of disassembling and sterilizing the entire device. A CIP (Cleaning in Place) system has been introduced that enables automatic cleaning without disassembly.
通常CIPシステムは、NaOHによるアルカリ洗浄プロセス、HN03やNaClOによる酸洗浄プロセス、高温スチームによる洗浄プロセス等からなり、こうしたシステムに使用されるシール材は従来以上に過酷な環境に曝されることとなる。このため、従来の上記したような材料では、耐薬品性や耐熱性の点で不十分であり、さらに高い耐熱性、耐薬品性のあるシール材が求められる。 Usually CIP systems, alkaline cleaning process by NaOH, HN0 3 and acid washing process with NaClO, made from the cleaning process or the like due to high temperature steam, a sealing material for use in such systems and be exposed to harsh environments than conventional Become. For this reason, the conventional materials as described above are insufficient in terms of chemical resistance and heat resistance, and a sealing material having higher heat resistance and chemical resistance is required.
現行、着香現象を防止するシール材としては、フッ素樹脂、ゴムにフッ素樹脂を被覆したパッキン、パーフロロゴム(FFKM)などがある。フッ素樹脂は着香性や耐薬品性には優れるが、クリープを起こしやすく長期シール性の確保に問題がある。また、弾力性がないことから、使用できる範囲が限られる。また、ゴムにフッ素樹脂を被覆したパッキンでは、ある程度の弾力性があり、ゴムの弾性によりフッ素樹脂のように大きなクリープも生じないが、被覆したフッ素樹脂が剥離したり、ゴムとフッ素樹脂間に蒸気や液体などが侵入し、ふくれを起こすなどの現象が発生することがあり、不向きな一面を持っている。また、パーフロロゴム(FFKM)は、耐熱性、耐薬品性、非着香性に優れたゴムであるが、非常に高価格であり、実際的に使用できない状況である。 At present, as a sealing material for preventing a fragrance phenomenon, there are a fluororesin, a packing in which a rubber is coated with a fluororesin, and a perfluoro rubber (FFKM). Fluororesin is excellent in flavor and chemical resistance, but is prone to creep and has a problem in securing long-term sealability. Moreover, since there is no elasticity, the range which can be used is limited. In addition, the packing in which the rubber is coated with fluororesin has a certain degree of elasticity and does not generate a large creep like the fluororesin due to the elasticity of the rubber. Phenomena such as invasion of vapors and liquids, which may cause blistering, have an unsuitable aspect. Perfluoro rubber (FFKM) is a rubber excellent in heat resistance, chemical resistance and non-flavoring property, but it is very expensive and cannot be used practically.
なお、本発明に関連する参考文献としては次のような文献がある。
本発明は上記のような実状に鑑みて開発されたものである。その目的とするところは、パーフロロゴム（FFKM）よりも低価格でかつ非着香性に優れ、耐薬品性、耐熱性を有しているフッ素ゴム組成物および同組成物からなるシール材を提供することにある。 The present invention has been developed in view of the above situation. The purpose of the present invention is to provide a fluororubber composition having a lower price than perfluoro rubber (FFKM), superior in non-flavoring properties, having chemical resistance and heat resistance, and a sealing material comprising the composition. There is.
本発明は上記の目的を有効に達成するために、次のような構成にしてある。すなわち、本発明のフッ素ゴム組成物は、フッ素ゴムと、このフッ素ゴム100重量部に対して1〜100重量部のガラス充填材及び／又は真球状無孔質シリカ（非晶質二酸化ケイ素）充填剤を含んでいることを特徴とする構成である。 The present invention is configured as follows in order to effectively achieve the above object. That is, the fluororubber composition of the present invention is filled with fluororubber, 1 to 100 parts by weight of a glass filler and / or spherical nonporous silica (amorphous silicon dioxide) with respect to 100 parts by weight of the fluororubber. It is the structure characterized by including the agent.
また、本発明のシール材は、フッ素ゴムと、このフッ素ゴム100重量部に対して1〜100重量部のガラス充填材及び／又は真球状無孔質シリカ（非晶質二酸化ケイ素）充填剤を含んだフッ素ゴム組成物を加硫成形してなることを特徴とする構成である。 The sealing material of the present invention comprises fluororubber, 1 to 100 parts by weight of a glass filler and / or true spherical nonporous silica (amorphous silicon dioxide) filler with respect to 100 parts by weight of the fluororubber. It is a structure characterized by being formed by vulcanization molding of a fluoro rubber composition.
本発明のフッ素ゴム組成物は、フッ素ゴムにニオイ成分を吸着しにくいシリカやガラスを充填したものであるので、非着香性を向上させ、パーフロロゴム（FFKM）よりも低価格でかつ非着香性に優れ、耐薬品性を有し、幅広い温度領域(一5〜１５０℃)で安定性(耐熱、耐低温性)を奏することができる。 Since the fluororubber composition of the present invention is a fluororubber filled with silica or glass that hardly adsorbs odor components, it improves non-fragrance, is less expensive than perfluoro rubber (FFKM), and is non-flavored. It has excellent properties and chemical resistance, and can exhibit stability (heat resistance and low temperature resistance) in a wide temperature range (15 to 150 ° C.).
また、本発明のシール材では、上記の効果とともに、非着香性を有しているので、ジュースなどの複数種類の製品を、同じ飲料製造ラインを用いて生産した場合でも、先の飲料製品のニオイがシール材を介して、その後に製造する飲料製品に移行するといったことがなく、飲料製品の品質を低下させることがない。 In addition, since the sealing material of the present invention has non-flavoring properties in addition to the above effects, even when a plurality of types of products such as juice are produced using the same beverage production line, the previous beverage product The odor is not transferred to the beverage product to be manufactured thereafter through the sealing material, and the quality of the beverage product is not lowered.
次に本発明について説明すると、本発明のフッ素ゴム組成物は、フッ素ゴム(フッ素濃度64〜71%)と、このフッ素ゴム100重量部に対して1〜100重量部のガラス充填剤及び／又は真球状無孔質シリカ（非晶質二酸化ケイ素）充填剤を含んでなるものであり、本発明のシール材は、上記のフッ素ゴム組成物を加硫成形してなるものである。 Next, the present invention will be described. The fluororubber composition of the present invention comprises a fluororubber (fluorine concentration of 64 to 71%), 1 to 100 parts by weight of a glass filler and / or 100 parts by weight of the fluororubber. A spherical nonporous silica (amorphous silicon dioxide) filler is contained, and the sealing material of the present invention is formed by vulcanization molding of the above-mentioned fluororubber composition.
フッ素ゴムについては、耐熱性、耐薬品性に優れ、着香しにくいと考えられる分子構造を持つ為、この開発目的のベースゴムとすることとした。フッ素ゴムは、フッ素濃度が64〜71%程度のものが市販されているが、本発明においては、いずれのものでもよく、用途に応じて適当なものを使用すればよい。 Fluoro rubber has a molecular structure that is considered to be excellent in heat resistance and chemical resistance and difficult to perfume. A fluororubber having a fluorine concentration of about 64 to 71% is commercially available, but any fluorocarbon rubber may be used in the present invention, and an appropriate one may be used depending on the application.
本発明における配合成分の検討
フッ素ゴムの非着香性をさらに向上させる為、充填剤の検討を行った。非着香住を向上させるためには、
１) ニオイ成分を吸着しても出さない
２) ニオイ成分を分解する
３) ゴム表面膜を形成させニオイの吸着を防ぐ
４) ニオイをゴムに着かないようにする
などの方法が考えられる。
Examination of compounding ingredients in the present invention In order to further improve the non-flavoring property of the fluororubber, a filler was examined. To improve non-scented housing,
1) Does not come out even if odor components are adsorbed. 2) Decomposes odor components. 3) Forms a rubber surface film to prevent odor adsorption. 4) Prevents odors from adhering to rubber.
これらの方法を検討したが、
１)の方法では、CIP洗浄や熱によって吸着したニオイ成分が脱着し思うような効果は得られなかった。
２)の方法は、ニオイ成分は数十種類におよぶものであり、全てを分解するのは難しいと判断した。
３)の方法においては、膜がゴムの伸びに追随せずシール材として必要とされる適当な伸びが得られず不向きと判断した。
４)の方法は、様々な種類の充填剤を検討したが、その中でもガラス及び真球状無孔質シリカ（非晶質二酸化ケイ素）充填剤は着香性が非常に少なく、CＩPや熱によってもニオイ成分の脱着が少なく総合的に非着香性に対して非常に良好な結果が得られた。
I have considered these methods,
In the method of 1), the odor component adsorbed by CIP cleaning or heat was not desorbed and the effect was not obtained.
In the method 2), there are several tens of odor components, and it was judged that it was difficult to decompose all of them.
In the method of 3), it was judged that the film did not follow the elongation of the rubber, and appropriate elongation required as a sealing material could not be obtained.
In the method of 4), various types of fillers were examined. Among them, glass and true spherical nonporous silica (amorphous silicon dioxide) fillers have very little fragrance, and even by CIP or heat. There was little desorption of odor components, and overall, very good results were obtained for non-aroma.
次に本発明にかかる試作例について説明する。
１)ベースゴム
今回の開発は、フッ素ゴムをベースゴムとして用い検討した。
フッ素ゴムは、フッ素濃度が64〜71%程度のものが市販されており、加硫系も過酸化物加硫、ポリオール加硫、アミン加硫などがあるが、本発明では特に限定はなく、使用条件や用途に応じて適宜選択すればよい。
Next, a prototype example according to the present invention will be described.
1) Base rubber This development was examined using fluoro rubber as the base rubber.
Fluoro rubber is commercially available with a fluorine concentration of about 64 to 71%, and vulcanization systems include peroxide vulcanization, polyol vulcanization, amine vulcanization, etc., but there is no particular limitation in the present invention, What is necessary is just to select suitably according to use conditions and a use.
２)ガラス或いはシリカ充填剤
ガラス充填剤についてはNa20-CaO-Si02系ガラス、A1203-B203-Si02系ガラス、A1203-CaO-Si02系ガラス、などがあるが、どのガラス充填剤を使用しても着香性に大きな差はなく、使用条件や用途に応じて適宜選択すればよい。
シリカ充填剤には、様々な種類があるが、真球状無孔質シリカ(非晶質二酸化ケイ素)がよい。ガラス及びシリカ充填剤の平均粒径は、１〜50μmが望ましい。粒径に関わらず、看香性は変わらないが、ゴムの補強に関しては、平均粒径が小さな方が望ましい。ゴムの補強効果を考えると、望ましくは1〜20μmである。
ガラス充填剤及び真球状無孔質シリカは、フッ素ゴム１００部に対して、ガラス充填剤及び真球状無孔質シリカ１部から１００部を配合するのがよいが、望ましくはフッ素ゴム１００部に対して１０〜８０部、さらに望ましくは２０〜６０部配合するのがよい。
2) Glass or silica filler As for the glass filler, Na 2 0-CaO-Si0 2 glass, A1 2 0 3 -B 2 0 3 -Si0 2 glass, A1 2 0 3 -CaO-Si0 2 glass, However, no matter which glass filler is used, there is no significant difference in flavoring, and it may be appropriately selected according to the use conditions and applications.
There are various types of silica fillers, but spherical nonporous silica (amorphous silicon dioxide) is preferable. The average particle size of the glass and silica filler is preferably 1 to 50 μm. Regardless of the particle size, the fragrance does not change, but it is desirable that the average particle size is smaller for rubber reinforcement. Considering the reinforcing effect of rubber, it is preferably 1 to 20 μm.
The glass filler and true spherical nonporous silica should be blended with 1 part to 100 parts of glass filler and true spherical nonporous silica with respect to 100 parts of fluororubber, preferably 100 parts of fluororubber. It is good to mix | blend 10-80 parts with respect to it, More desirably 20-60 parts.
３)その他の配合成分
各試料の成形用ゴム組成物は、上記の他、下記の表１に示すように加硫成形に必要な加硫剤、共架橋剤など一般的なゴム薬品を配合した。
3) Other compounding components In addition to the above, the rubber composition for molding of each sample was blended with general rubber chemicals such as a vulcanizing agent and a co-crosslinking agent necessary for vulcanization molding as shown in Table 1 below. .
４)ゴムの配合
全てのゴム配合はミキシングロールを使用して混練りを行った。
使用機器：６インチミキシングロール
下記の表１のベースゴム及び配合薬品を秤量した。その後、ベースゴムをロールに巻きつけ、素練りを５分行った。素練り後、加硫剤及び架橋剤以外の配合薬品（充填剤や加工助剤等）を数回に分けて投入し、数度の切り返しを行い配合薬品が分散するのを確認した(１５分)。最後に、加硫剤及び架橋剤を数回に分けて投入し、配合薬品が分散するのを確認した。その後、５回薄通しを行い、ゴムの厚みが、３mmになるようにロール間隔を調整し分出しを行った。
4) Rubber compounding All rubber compounds were kneaded using a mixing roll.
Equipment used: 6-inch mixing roll Base rubber and compounding chemicals shown in Table 1 below were weighed. Thereafter, the base rubber was wound around a roll and masticated for 5 minutes. After mastication, compounding chemicals (fillers, processing aids, etc.) other than the vulcanizing agent and crosslinking agent were added in several portions, and after several turns, it was confirmed that the compounding chemical was dispersed (15 minutes) ). Finally, the vulcanizing agent and the crosslinking agent were added in several portions, and it was confirmed that the compounded chemicals were dispersed. Thereafter, thinning was performed 5 times, and the roll interval was adjusted so that the rubber thickness was 3 mm, and dispensing was performed.
５)シール材の成形方法
下記の表１の成分を含んだフッ素ゴム組成物を2g秤量し、金型内に充填して70tプレス装置にて170℃、20分間、ゲージ圧力15MPaで加熱加圧成形して、寸法(AS-568-214):線径3.53mm、内径24.99mm)のＯリングに成形した。
5) Molding method of sealing material 2g of fluororubber composition containing the components shown in Table 1 below is weighed, filled in a mold, and heated and pressurized with a 70t press at 170 ° C for 20 minutes at a gauge pressure of 15MPa. Molded into an O-ring having dimensions (AS-568-214): wire diameter 3.53 mm, inner diameter 24.99 mm).
６)評価試験方法
試作例
(ａ)硬度試験の方法
JIS K6253に準拠し、JIS3号ダンベルを3枚重ねにして、デュロメ一夕一夕イプＡ硬さ試験機で測定した。判定基準は、60〜95の範囲にあることとした。
6) Evaluation test method Prototype example
(a) Hardness test method
In accordance with JIS K6253, three dumbbells of JIS3 were piled up and measured with a Durome overnight overnight type A hardness tester. The criterion was in the range of 60-95.
（ｂ）引張強さ及び伸び試験の方法
JIS K6251に準拠し、JIS3号ダンベルを引張試験装置にて規定速度で切断まで引っ張り、引張強さ及び伸びを測定した。判定基準は、引張り強さを10MPa以上、伸びは100%以上とした。
(B) Tensile strength and elongation test methods
In accordance with JIS K6251, a JIS No. 3 dumbbell was pulled with a tensile tester at a specified speed until cutting, and the tensile strength and elongation were measured. The judgment criteria were a tensile strength of 10 MPa or more and an elongation of 100% or more.
（ｃ）圧縮永久歪み試験の方法
JIS K6262に準拠し、φ29×12.5ｈディスクを一定の圧縮割合(圧縮率25%)で圧縮し規定の温度(200℃)で規定時間（70時間）放置後、ひずみを取り除き規定時間後に試験片の厚さを測定した。判定基準は、40%以下とした。
(C) Compression set test method
According to JIS K6262, φ29 × 12.5h disk is compressed at a constant compression ratio (compression ratio 25%), left at a specified temperature (200 ° C) for a specified time (70 hours), strain is removed, and a test piece is removed after the specified time. The thickness of was measured. The criterion was 40% or less.
（ｄ）着香性の評価
着香性の評価、対象物となる飲料(果汁ジュース)100mlに試料(試料寸法:縦50mm、横
20mm、厚さ2mm)を常温で24時間浸せきし、イオン交換水、80℃の水酸化ナトリウム水溶液
(3%)、イオン交換水、80℃の硝酸水溶液(3%)、イオン交換水の順番で洗浄し、試料を取り出す。その後、第１段階の評価として被験者5名に試料のニオイをかがせて５段階で着香の度合いを評価した(EPDMを5、フッ素樹脂を0)。
第２段階の評価として、第１段階の試料を100m1のイオン交換水に浸せきし、20分間煮沸する。その後、冷却し室温になってから被験者５名にイオン交換水のニオイをかがせて５段階で着香の度合いを評価した(EPDMを5、フッ素樹脂をO)。これらの点数を平均して総合的に評価を行った。判定基準は、第１段階、第２段階ともに２未満であることとした。
(D) Evaluation of flavoring property Evaluation of flavoring property, sample (sample size: vertical 50mm, horizontal) to 100ml beverage (fruit juice) as the object
20mm, 2mm thick) at room temperature for 24 hours, ion-exchanged water, 80 ° C sodium hydroxide aqueous solution
(3%), ion-exchanged water, 80 ° C. nitric acid aqueous solution (3%), and ion-exchanged water are washed in this order, and the sample is taken out. Thereafter, as the first stage of evaluation, the odor of the sample was covered with five subjects and the degree of flavoring was evaluated in five stages (EPDM was 5 and fluororesin was 0).
As the evaluation of the second stage, the sample of the first stage is immersed in 100 ml of ion exchange water and boiled for 20 minutes. Then, after cooling down to room temperature, 5 subjects were given odor of ion-exchanged water and the degree of flavoring was evaluated in 5 stages (EPDM was 5 and fluororesin was O). These scores were averaged for comprehensive evaluation. The criterion for determination was that both the first stage and the second stage were less than 2.
（ｅ）成形性の評価方法
成形性は、シート及びＯリングを成形し、その流動性、離型性、成形品の状態から官能的に判断した。評価は、成形性が「良好」、「普通」、「悪い」、の三段階で評価した。判定基準は、成形性が「良好」、「普通」を合格とした。
(E) Formability evaluation method Formability was determined sensorially from the flowability, releasability, and state of a molded product of a sheet and an O-ring. The evaluation was made in three stages: moldability “good”, “normal”, and “bad”. As the judgment criteria, “good” and “normal” were considered acceptable.
７)試作実施例の結果の説明
以下、本発明の効果について、実験例を用いて説明する。
7) Description of Results of Trial Example Hereinafter, the effects of the present invention will be described using experimental examples.
フッ素ゴムに真球状無孔質シリカ(非晶質二酸化ケイ素)充填剤を入れたものである。充填剤量が少ない為、補強効果があまり見られないが、判定基準は満足している。着香性においても良好である。 Fluororubber contains a spherical nonporous silica (amorphous silicon dioxide) filler. Since the amount of the filler is small, the reinforcing effect is not so much, but the criterion is satisfied. Good in flavor.
実施例1の真球状無孔質シリカ(非晶質二酸化ケイ素)充填剤の量を40重量部に増やしたものである。補強効果もあり、物性的にも良好なものとなっている。圧縮永久歪、着香性ともに優れたものになっている。 The amount of the spherical nonporous silica (amorphous silicon dioxide) filler in Example 1 was increased to 40 parts by weight. There is also a reinforcing effect, and the physical properties are also good. It has excellent compression set and flavoring.
実施例１の真球状無孔質シリカ(非晶質二酸化ケイ素)充填剤の量を100重量部に増やしたものである。実施例1よりもさらに大きな補強効果が見られるが、伸びが大きく減少しており、合格ラインぎりぎりであるが、その他の物性は全て合格範囲内である。圧縮永久歪、着香性ともに優れたものになっている。 The amount of the true spherical nonporous silica (amorphous silicon dioxide) filler in Example 1 was increased to 100 parts by weight. Although an even greater reinforcing effect than in Example 1 is seen, the elongation is greatly reduced and is just below the pass line, but all other physical properties are within the pass range. It has excellent compression set and flavoring.
フッ素ゴムにA1203-CaO-Si02系ガラス充填剤を入れたものである。補強効果もあり、物性的にも良好なものとなっている。圧縮永久歪、着香性ともに優れたものになっている。
（比較例１）
A1 2 0 3 -CaO-Si0 2 glass filler in fluororubber. There is also a reinforcing effect, and the physical properties are also good. It has excellent compression set and flavoring.
(Comparative Example 1)
実施例１に充填剤を何も入れない配合である。強度が合格ラインに達しておらず、また着香性も合格ラインに達していない。この配合より、充填剤の効果が確認できる。
（比較例２）
Example 1 contains no filler. The strength does not reach the pass line, and the fragrance does not reach the pass line. From this formulation, the effect of the filler can be confirmed.
(Comparative Example 2)
実施例１の真球状無孔質シリカ(非晶質二酸化ケイ素)充填剤の量を110重量部に増やしたものである。伸びが100%以下になり合格ラインを満たしておらず、シール材としては不向きな材料となった。
（比較例３）
The amount of the true spherical nonporous silica (amorphous silicon dioxide) filler in Example 1 was increased to 110 parts by weight. The elongation was 100% or less, and it did not meet the pass line, making it unsuitable as a sealing material.
(Comparative Example 3)
実施例２のガラス充填剤の粒径が平均粒径57.5μmのものに変更した。強度及び圧縮永久歪が合格ラインに達せず、シール材として不向きなものとなった。これより、充填剤の平均粒径がこれより大きくなると物性低下が大きくなると予想される。
（比較例４）
The particle size of the glass filler of Example 2 was changed to one having an average particle size of 57.5 μm. The strength and compression set did not reach the acceptable line, making it unsuitable as a sealing material. From this, it is expected that the physical properties decrease greatly when the average particle size of the filler is larger than this.
(Comparative Example 4)
EPDMの標準配合で着香性の評価を行った。その結果、第１段階、第２段階ともに５であり、目標値とは程遠い結果となった。
（比較例５）
Flavor was evaluated using the standard blend of EPDM. As a result, both the first stage and the second stage were 5, which is far from the target value.
(Comparative Example 5)
ガラスおよびシリカ充填剤の代わりに活性炭を配合し、着香性の評価を行った。第１段階は３、第２段階は５でありガラスおよびシリカ充填剤とは程遠い結果となった。特に第２段階は５であり、吸着されたニオイ成分が放出されたものと考えられる。 Activated charcoal was blended in place of glass and silica filler, and flavoring was evaluated. The first stage was 3, and the second stage was 5, which was far from glass and silica filler. In particular, the second stage is 5, and it is considered that the adsorbed odor component was released.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1121400A (en) * | 1997-07-04 | 1999-01-26 | Otsuka Chem Co Ltd | Antibacterial or antifungal resin composition and its use |
| WO2000042100A1 (en) * | 1999-01-12 | 2000-07-20 | Daikin Industries, Ltd. | Crosslinkable elastomer composition and formed article prepared from said composition |
| WO2000078871A1 (en) * | 1999-06-21 | 2000-12-28 | Daikin Industries, Ltd. | Crosslinkable elastomer composition and molded article produced from the composition |
| JP2001342319A (en) * | 2000-06-01 | 2001-12-14 | Matsushita Electric Ind Co Ltd | Fluororubber composition, fixing member, fixing method, and fixing apparatus |
| JP2002212370A (en) * | 2001-01-23 | 2002-07-31 | Nok Corp | Fluororubber vulcanization molded product |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1121400A (en) * | 1997-07-04 | 1999-01-26 | Otsuka Chem Co Ltd | Antibacterial or antifungal resin composition and its use |
| WO2000042100A1 (en) * | 1999-01-12 | 2000-07-20 | Daikin Industries, Ltd. | Crosslinkable elastomer composition and formed article prepared from said composition |
| WO2000078871A1 (en) * | 1999-06-21 | 2000-12-28 | Daikin Industries, Ltd. | Crosslinkable elastomer composition and molded article produced from the composition |
| JP2001342319A (en) * | 2000-06-01 | 2001-12-14 | Matsushita Electric Ind Co Ltd | Fluororubber composition, fixing member, fixing method, and fixing apparatus |
| JP2002212370A (en) * | 2001-01-23 | 2002-07-31 | Nok Corp | Fluororubber vulcanization molded product |
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