JPH09316332A - Sealing composition - Google Patents
Sealing compositionInfo
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- JPH09316332A JPH09316332A JP15885196A JP15885196A JPH09316332A JP H09316332 A JPH09316332 A JP H09316332A JP 15885196 A JP15885196 A JP 15885196A JP 15885196 A JP15885196 A JP 15885196A JP H09316332 A JPH09316332 A JP H09316332A
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- organic solvent
- silicone
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はシール性組成物に関
し、特に経時によるシール部の擬似接着性がなく、シー
ル性及び耐久性に優れたシール性組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealable composition, and more particularly to a sealable composition which does not have a pseudo-adhesive property of a seal portion over time and is excellent in sealability and durability.
【０００２】[0002]
【従来の技術】電信・電話回線、電気ケーブル、光ファ
イバー回線等のジョイントボックスや分岐のためのボッ
クスの防水・防汚のために、各種のシール材が従来から
良く使われている。しかしながら、形状が単純なシール
部についてはともかく、形状が複雑なものの場合には、
各種の合成ゴム成型品のような加硫されたシール状ゴム
部材を使用して充分にシールすることは不可能である。2. Description of the Related Art Various sealing materials have been widely used in the past for waterproofing / contaminating joint boxes such as telegraph / telephone lines, electric cables, optical fiber lines and boxes for branching. However, aside from the seal part that has a simple shape, if the shape is complicated,
It is impossible to sufficiently seal using a vulcanized sealing rubber member such as various synthetic rubber moldings.
【０００３】そこで開発されたのが、液状硬化型接着シ
ール材（エポキシ系、ウレタン系を始め、各種合成ゴム
系のものがある）であった。しかしながら、電信・電話
・電気ケーブル・光ファイバーケーブル等のジョイント
ボックス等、蓋を開けなければならない場合には、これ
らの接着剤タイプのシール材では対応することができな
かった。What was developed there was a liquid curable adhesive sealing material (including epoxy-based, urethane-based and various synthetic rubber-based materials). However, when it is necessary to open a lid such as a joint box for a telegraph, a telephone, an electric cable, an optical fiber cable, etc., these adhesive type sealing materials cannot be used.
【０００４】また、これらのジョイントボックスの蓋に
は、通常、未加硫品の合成ゴムを使用しているが、長期
の経時によって合成ゴムの加硫が促進され、シール基材
に接着性が生じて蓋が開閉できなくなる等の欠点があっ
た。更に、これらのボックスは地中に埋設されることが
多いため、シール材に対して耐熱性、耐寒性、耐候性等
が厳しく要求されるが、これらの要求を満足するものは
未だ知られていない。Although unvulcanized synthetic rubber is usually used for the lids of these joint boxes, the vulcanization of the synthetic rubber is promoted over a long period of time and the adhesiveness to the seal substrate is increased. There was a defect that the lid could not be opened and closed due to the occurrence. Furthermore, since these boxes are often buried in the ground, heat resistance, cold resistance, weather resistance, etc. are strictly required for the sealing material, but those satisfying these requirements are still unknown. Absent.
【０００５】[0005]
【発明が解決しようとする課題】そこで、本発明者らは
上記課題を解決すべく鋭意検討した結果、ベースとして
直鎖状高重合度シリコーンを使用し、これに有機溶液可
溶性シリコーンレジン、有機溶剤不溶性シリコーン粉
末、及び、無機充填材等を配合することによって、シー
ル部の複雑な形状に対する追随性、シール材としての適
当な弾力性、耐熱、耐寒及び耐候性に優れ、長期に渡っ
て優れたシール特性を示すシール材を得ることができる
ことを見い出し、本発明に到達した。従って、本発明の
目的は、適度なタック感と弾力性がある上、優れた温度
特性、耐久性、シール性を有すると共に、複雑な形状に
も追随することのできるシール材を提供することにあ
る。Therefore, as a result of intensive studies to solve the above problems, the inventors of the present invention have used a linear high-polymerization degree silicone as a base, and have an organic solution-soluble silicone resin and an organic solvent. By blending insoluble silicone powder, inorganic filler, etc., it has excellent conformability to the complicated shape of the sealing part, suitable elasticity as a sealing material, heat resistance, cold resistance and weather resistance, and is excellent for a long period of time. The inventors have found that a sealing material having sealing characteristics can be obtained, and arrived at the present invention. Therefore, an object of the present invention is to provide a sealing material which has an appropriate tack feeling and elasticity, as well as excellent temperature characteristics, durability, and sealing property, and which can follow a complicated shape. is there.
【０００６】[0006]
【課題を解決するための手段】本発明の上記の目的は、
（１）２５℃における粘度が２０，０００Ｐ（ポイズ）
〜４００，０００Ｐである直鎖状高重合度のシリコーン
１００重量部、（２）有機溶剤可溶性シリコーンレジン
５〜２００重量部、（３）有機溶剤不溶性シリコーン粉
末５〜２００重量部、及び（４）平均粒径が５００μｍ
以下の無機充填材１０〜３００重量部からなることを特
徴とするシール性組成物によって達成された。SUMMARY OF THE INVENTION The above objects of the present invention are as follows.
(1) Viscosity at 25 ° C is 20,000 P (poise)
100 parts by weight of a linear high degree of polymerization silicone of about 400,000 P, (2) 5 to 200 parts by weight of organic solvent-soluble silicone resin, (3) 5 to 200 parts by weight of organic solvent insoluble silicone powder, and (4) Average particle size is 500 μm
It has been achieved by a sealing composition comprising the following inorganic filler in an amount of 10 to 300 parts by weight.
【０００７】本発明のシール性組成物における第１成分
の直鎖状高重合度シリコーンは、２５℃における粘度が
２０，０００Ｐ（ポイズ）〜４００，０００Ｐであるこ
とが必要である。２０，０００Ｐ未満ではシール材とし
て用いるのに適当な弾力性が得られない。また、４０
０，０００Ｐを超えると複雑な形状のシール部材に対し
て追随性が悪くなる。The linear high-polymerization degree silicone as the first component in the sealing composition of the present invention is required to have a viscosity at 25 ° C. of 20,000 P (poise) to 400,000 P. If it is less than 20,000P, the elasticity suitable for use as a sealing material cannot be obtained. Also, 40
If it exceeds 50,000P, the followability will deteriorate with respect to the seal member having a complicated shape.
【０００８】このような直鎖状高重合度のシリコーン
は、適度の弾力性を付与することができるので、シール
性組成物のベースとして最適である。本発明において
は、特に、一般式 R1 a Si0 (4-a)/2 で表される直鎖状
高重合度のシリコーンであることが好ましい。ただし、
式中のR1は炭素数１〜１４の１価の炭化水素基または水
酸基であり、ａは２．００〜２．２０の範囲内の数であ
る。[0008] Such a linear high-polymerization degree silicone is suitable as a base of the sealable composition because it can impart appropriate elasticity. In the present invention, a linear high polymerization degree silicone represented by the general formula R 1 a Si 0 (4-a) / 2 is particularly preferable. However,
R 1 in the formula is a monovalent hydrocarbon group having 1 to 14 carbon atoms or a hydroxyl group, and a is a number within the range of 2.00 to 2.20.
【０００９】本発明のシール性組成物における第２成分
の有機溶剤可溶性シリコーンレジンは、シール部材に軽
く付着させる効果のあるタック感をもたせるために必要
である。適度のタック感を持たせる観点からは、R2 3 Si
01/2単位とSi02単位との比が０．５：１〜２：１の有機
溶剤可溶性シリコーンレジンを使用することが好まし
く、特に０．５５：１〜０．９：１のものを使用するこ
とが好ましい。ただし、式中のR2は炭素数１〜１４の１
価の炭化水素基または水酸基である。The organic solvent-soluble silicone resin as the second component in the sealing composition of the present invention is necessary to give a tacky feeling that is lightly attached to the sealing member. From the viewpoint of providing a suitable tackiness, R 2 3 Si
It is preferable to use an organic solvent-soluble silicone resin having a ratio of 0 1/2 units to SiO 2 units of 0.5: 1 to 2: 1, particularly 0.55: 1 to 0.9: 1. Preference is given to using. However, R 2 in the formula is 1 having 1 to 14 carbon atoms.
It is a valent hydrocarbon group or a hydroxyl group.
【００１０】本発明のシール性組成物における第３成分
の有機溶剤不溶性シリコーン粉末は、シール材に適度の
弾力性と共に適度の硬度を持たせるために必要であり、
特に、一般式R3Si03/2で表されたポリオルガノシルセス
キオキサンであることが好ましく、形状は真球状でも不
定形でも良い。ただし、式中のR3は炭素数１〜１４の１
価の炭化水素基である。The organic solvent-insoluble silicone powder as the third component in the sealing composition of the present invention is necessary for the sealing material to have appropriate elasticity and appropriate hardness,
In particular, the polyorganosilsesquioxane represented by the general formula R 3 Si0 3/2 is preferable, and the shape may be spherical or amorphous. However, R 3 in the formula is 1 having 1 to 14 carbon atoms
Is a monovalent hydrocarbon group.
【００１１】本発明のシール性組成物における第４成分
の無機充填剤は、未加硫ゴムをコンパウンド状にするた
めに必要である。本発明においては、平均粒径が５００
μｍ以下の無機充填材であることが必要であるが、特
に、硬度を付与するという充填材としての効果をも発揮
させるためには、平均粒径が５０μｍ以下であることが
好ましい。また、係る無機充填材としては、シリカ、炭
酸カルシウム、アルミナ、酸化亜鉛、ベントナイト等を
用いることができる。本発明においては、特に、シリカ
及び炭酸カルシウムを用いることが好ましい。The inorganic filler as the fourth component in the sealing composition of the present invention is necessary for compounding the unvulcanized rubber. In the present invention, the average particle size is 500.
It is necessary that the inorganic filler has an average particle diameter of 50 μm or less, but in particular, in order to exert the effect as a filler that imparts hardness, the average particle diameter is preferably 50 μm or less. Moreover, as the inorganic filler, silica, calcium carbonate, alumina, zinc oxide, bentonite, or the like can be used. In the present invention, it is particularly preferable to use silica and calcium carbonate.
【００１２】また、本発明のシール性組成物において
は、１００重量部の直鎖状高重合度シリコーン１００重
量部に対して、５〜２００重量部の有機溶剤可溶性シリ
コーンレジン、１０〜３００重量部の有機溶剤不溶性シ
リコーン粉末、及び５〜２００重量部の無機充填材を配
合することが必要である。In the sealing composition of the present invention, 5 to 200 parts by weight of an organic solvent-soluble silicone resin, 10 to 300 parts by weight, per 100 parts by weight of a linear high-polymerization degree silicone of 100 parts by weight. It is necessary to blend the organic solvent-insoluble silicone powder (1) and 5 to 200 parts by weight of the inorganic filler.
【００１３】本発明のシール性組成物は、上記配合比で
４成分をそれぞれ計量した後に、１００〜１８０℃の温
度範囲下で、１〜６時間、加熱型ニーダーを用いて混練
することによって製造される。１００℃未満では、第２
成分が第１成分に溶解する時間が長くなるので、シール
性組成物のタック感及び硬度にバラツキが大きくなり、
実用することができなくなる。また製造過程に用いる混
練機は、例えば、二本ロール、バンバリーミキサー、品
川ミキサー、プラネタリーミキサー等の公知のもの中か
ら適宜選択することができるが、本発明においては、特
に、加熱加圧ニーダーを使用することが好ましい。The sealing composition of the present invention is produced by weighing each of the four components in the above-mentioned mixing ratio and then kneading them in a heating type kneader for 1 to 6 hours in a temperature range of 100 to 180 ° C. To be done. Below 100 ° C, the second
Since the time required for the component to dissolve in the first component becomes long, the tackiness and hardness of the sealing composition vary greatly.
It cannot be put to practical use. The kneading machine used in the production process can be appropriately selected from known ones such as a two-roll roll, a Banbury mixer, a Shinagawa mixer, a planetary mixer, and the like. Is preferably used.
【００１４】[0014]
【発明の実施の形態】本発明のシール性組成物は、２５
℃における粘度が２０，０００Ｐ（ポイズ）〜４００，
０００Ｐである直鎖状高重合度のシリコーン１００重量
部、有機溶剤可溶性シリコーンレジン５〜２００重量
部、有機溶剤不溶性シリコーン粉末５〜２００重量部、
及び、平均粒径が５００μｍ以下の無機充填材１０〜３
００重量部を、１００〜１８０℃の温度で、１〜６時
間、加熱型ニーダーを用いて混練することによって容易
に得ることができる。BEST MODE FOR CARRYING OUT THE INVENTION The sealing composition of the present invention is 25
Viscosity at 20,000 P (poise) to 400,
100 parts by weight of linear high degree of polymerization silicone of 000 P, 5 to 200 parts by weight of organic solvent-soluble silicone resin, 5 to 200 parts by weight of organic solvent-insoluble silicone powder,
And inorganic fillers 10 to 3 having an average particle size of 500 μm or less
It can be easily obtained by kneading 100 parts by weight at a temperature of 100 to 180 ° C. for 1 to 6 hours using a heating type kneader.
【００１５】[0015]
【発明の効果】本発明のシール性組成物は、ベースとし
て直鎖状高重合度シリコーンを用いるため、耐熱、耐寒
性に優れる上、耐候性にも極めて優れている。また、加
硫を促進する成分も含有していないため、適当なタック
感と弾力性を有し、シール部の複雑な形状にも容易に追
随するので、シール部への密着性に優れる上、経時によ
って接着性が生じることもないので、ジョイントボック
ス等、開閉の必要な箇所のシール材としても好適であ
る。EFFECTS OF THE INVENTION Since the sealable composition of the present invention uses a linear high-polymerization degree silicone as a base, it is excellent in heat resistance, cold resistance and weather resistance. Further, since it does not contain a component that accelerates vulcanization, it has a suitable tackiness and elasticity, and easily follows the complicated shape of the seal portion, so that it has excellent adhesion to the seal portion. Since adhesiveness does not occur over time, it is also suitable as a seal material for places where opening and closing are required, such as joint boxes.
【００１６】[0016]
【実施例】以下、本発明を実施例によって更に詳述する
が、本発明はこれによって限定されるものではない。
又、特に断らない限り、以下に記載する「％」は「重量
％」を意味する。EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto.
Unless otherwise specified, “%” described below means “% by weight”.
【００１７】実施例１．２５℃における粘度が３００，
０００Ｐ（ポイズ）の直鎖状高重度ジメチルシリコーン
１００部、(CH3)3SiO (1/2) /SiO2=0.7/1 の比となる有
機溶剤可溶性シリコーンレジン１２．５部、平均粒径が
１．５μｍのシリカ（クリスタライト５Ｘ：龍森株式会
社製の商品名）１００部、及び、(CH3SiO3/2) で表され
た有機溶剤不溶性ポリオルガノシルセスキオキサン（Ｘ
−５２−１０３４（不定形）：信越化学株式会社製の商
品名）３７．５部を加熱ニーダーに計量した後、１６０
℃で２時間良く混練りして、弾力性に優れたタック性の
あるゴム状コンパウンドのシール性組成物を得た。ま
た、得られたシール性組成物の物性を測定した結果、JI
S-K-2220-5-3での稠度（未混和）が９０、JIS-K-6300-6
での可塑度が１８５であり、２５℃における比重は１．
３８であった。Example: Viscosity at 1.25 ° C. is 300,
100 parts of 000 P (poise) linear high-grade dimethyl silicone, 12.5 parts of organic solvent-soluble silicone resin having a ratio of (CH 3 ) 3 SiO (1/2) / SiO 2 = 0.7 / 1, average particle size Of 1.5 μm silica (Crystallite 5X: trade name manufactured by Tatsumori Co., Ltd.), and an organic solvent-insoluble polyorganosilsesquioxane (X represented by (CH 3 SiO 3/2 ))
-52-1034 (amorphous form): Shin-Etsu Chemical Co., Ltd. product name) 37.5 parts were weighed in a heating kneader, and then 160
The mixture was kneaded well at 0 ° C. for 2 hours to obtain a rubbery compound sealable composition having excellent elasticity and tackiness. In addition, as a result of measuring the physical properties of the obtained sealing composition, JI
Consistency (unmixed) with SK-2220-5-3 is 90, JIS-K-6300-6
Has a plasticity of 185 and a specific gravity at 25 ° C. of 1.
It was 38.
【００１８】実施例２．２５℃における粘度が１００，
０００Ｐ（ポイズ）の直鎖状高重度メチルフェニルシリ
コーン（フェニル基量が５モル％）１００部、(CH3)3Si
O (1/2) /SiO2=0.65/1の比となる有機溶剤可溶性シリコ
ーンレジン４３部、平均粒径は２．８μｍのCaCO3 粉末
（スーパー４Ｓ：丸尾カルシウム株式会社製の商品名）
１１４部、(CH3SiO3/2) で表された有機溶剤不溶性ポリ
オルガノシルセスキオキサン（Ｘ−５２−１０３４：信
越化学株式会社製の商品名）２８．６部を加熱ニーダー
に計量し、１５０℃で４時間良く混練りして、弾力性に
優れたタック性のあるゴム状コンパウンドのシール性組
成物を得た。また、得られたシール性組成物の物性を測
定した結果、JIS-K-2220-5-3での稠度（未混和）が８
６、JIS-K-6300-6での可塑度が１７１であり、２５℃下
の比重は１．４０であった。Example 2. Viscosity at 25 ° C. is 100,
100 parts of 000 P (poise) straight-chain high-grade methylphenyl silicone (phenyl group content: 5 mol%), (CH 3 ) 3 Si
43 parts of organic solvent-soluble silicone resin with a ratio of O (1/2) / SiO 2 = 0.65 / 1, CaCO 3 powder with an average particle size of 2.8 μm (Super 4S: trade name of Maruo Calcium Co., Ltd.)
114 parts, and 28.6 parts of an organic solvent-insoluble polyorganosilsesquioxane (X-52-1034: trade name manufactured by Shin-Etsu Chemical Co., Ltd.) represented by (CH 3 SiO 3/2 ) were measured in a heating kneader. The mixture was well kneaded at 150 ° C. for 4 hours to obtain a rubbery compound sealable composition having excellent elasticity and tackiness. In addition, as a result of measuring the physical properties of the obtained sealing composition, the consistency (unmixed) in JIS-K-2220-5-3 was 8
6. The plasticity according to JIS-K-6300-6 was 171 and the specific gravity at 25 ° C. was 1.40.
【００１９】実施例３．２５℃における粘度が２０，０
００Ｐ（ポイズ）の直鎖状高重度ジメチルシリコーン１
００部、(CH3)3SiO (1/2) /SiO2=0.55/1の比となる有機
溶剤可溶性シリコーンレジン１１部、平均粒径が３．５
μｍのシリカ（クリシタライトＶＸ−ＳＴ：龍森株式会
社製の商品名）７７．８部、(CH3SiO3/2) で表された有
機溶剤不溶性ポリオルガノシルセスキオキサン（Ｘ−５
２−１０３４：信越化学株式会社製の商品名）３３．３
部を加熱ニーダーに計量し、１００℃で６時間良く混練
りして、弾力性に優れたタック性のあるゴム状コンパウ
ンドのシール性組成物を得た。また、得られたシール性
組成物の物性を測定した結果、JIS-K-2220-5-3での稠度
（未混和）が９５、JIS-K-6300-6での可塑度が１９７で
あり、２５℃下の比重は１．３７であった。Example 3. Viscosity at 25 ° C. was 20,0
00P (poise) linear high-grade dimethyl silicone 1
00 parts, (CH 3 ) 3 SiO (1/2) / SiO 2 = 0.55 / 1, 11 parts of an organic solvent-soluble silicone resin having a ratio of 3.5, an average particle size of 3.5.
77.8 parts of silica (Crycitalite VX-ST: trade name, manufactured by Tatsumori Co., Ltd.) having a particle size of 7 μm, organic solvent-insoluble polyorganosilsesquioxane (X-5) represented by (CH 3 SiO 3/2 ).
2-1034: trade name of Shin-Etsu Chemical Co., Ltd.) 33.3
The parts were weighed in a heating kneader and thoroughly kneaded at 100 ° C. for 6 hours to obtain a rubbery compound sealing composition having excellent elasticity and tackiness. In addition, as a result of measuring the physical properties of the obtained sealing composition, the consistency (unmixed) in JIS-K-2220-5-3 is 95 and the plasticity in JIS-K-6300-6 is 197. The specific gravity under 25 ° C. was 1.37.
【００２０】実施例４．２５℃における粘度が２００，
０００Ｐ（ポイズ）の直鎖状高重度ジメチルシリコーン
１００部、(CH3)3SiO (1/2) /SiO2=0.8/1 の比となる有
機溶剤可溶性シリコーンレジン５０部、平均粒径が３．
４μｍのCaCO3 粉末（スーパーＳＳ：丸尾カルシウム株
式会社製の商品名）１３３部、(CH3SiO3/2) で表された
有機溶剤不溶性ポリオルガノシルセスキオキサン（Ｘ−
５２−１０３４：信越化学株式会社製の商品名）２５部
を加熱ニーダーに計量し、１８０℃で１時間良く混練り
して、弾力性に優れたタック性のあるゴム状コンパウン
ドのシール性組成物を得た。また、得られたシール性組
成物の物性を測定した結果、JIS-K-2220-5-3での稠度
（未混和）が１０２、JIS-K-6300-6での可塑度が２５１
であり、２５℃下の比重は１．３７であった。Example 4. Viscosity at 25 ° C. was 200,
100 parts of 000 P (poise) linear high-grade dimethyl silicone, 50 parts of organic solvent-soluble silicone resin having a ratio of (CH 3 ) 3 SiO (1/2) / SiO 2 = 0.8 / 1, and an average particle size of 3 ．
133 μm of 4 μm CaCO 3 powder (Super SS: trade name of Maruo Calcium Co., Ltd.), an organic solvent-insoluble polyorganosilsesquioxane (X− represented by (CH 3 SiO 3/2 ).
52-1034: trade name of Shin-Etsu Chemical Co., Ltd.) 25 parts were weighed in a heating kneader and kneaded well at 180 ° C. for 1 hour to give a rubbery compound sealing composition having excellent elasticity and tackiness. Got In addition, the physical properties of the obtained sealing composition were measured, and as a result, the JIS-K-2220-5-3 consistency (unmixed) was 102, and the JIS-K-6300-6 plasticity was 251.
And the specific gravity at 25 ° C. was 1.37.
【００２１】実施例１〜４で得られたゴム状コンパウン
ドのシール性組成物を電話回線分岐ボックスの蓋のシー
ル材として３年間用いたところ、気密性や防水性等にお
いて優れていることが確認された。また、蓋を開けて観
察したところ、擬似接着がない上、あたかも型取を行っ
たかの様に、シール性組成物が複雑が形状にピッタリと
マッチしていた。The rubber-like compound sealing compositions obtained in Examples 1 to 4 were used for 3 years as a sealing material for a telephone line branch box lid, and it was confirmed that they were excellent in airtightness and waterproofness. Was done. In addition, when the lid was opened and observed, there was no pseudo-adhesion, and the sealing composition was intricately matched to the shape as if it had been molded.
【００２２】比較例１．有機溶剤可溶性シリコーンレジ
ンを除いた他は、実施例１と全く同様にして弾力性はあ
るものの、タック感のないシール性組成物を得た。ま
た、得られたシール性組成物の物性を測定した結果、JI
S-K-2220-5-3での稠度（未混和）が９０、JIS-K-6300-6
での可塑度が１８０であり、２５℃下の比重は１．３０
であった。Comparative Example 1. A sealing composition having elasticity but no tackiness was obtained in exactly the same manner as in Example 1 except that the organic solvent-soluble silicone resin was removed. In addition, as a result of measuring the physical properties of the obtained sealing composition, JI
Consistency (unmixed) with SK-2220-5-3 is 90, JIS-K-6300-6
Has a plasticity of 180 and a specific gravity of 1.30 at 25 ° C.
Met.
【００２３】比較例２．有機溶剤不溶性シリコーン粉末
を除いた他は、実施例１と全く同様にしてタック感はあ
るものの、弾力性のないシール性組成物を得た。また、
得られたシール性組成物の物性を測定した結果、JIS-K-
2220-5-3での稠度（未混和）が１２０、JIS-K-6300-6で
の可塑度が２１０であり、２５℃下の比重は１．３２で
あった。Comparative Example 2 A sealing composition having a tackiness but no elasticity was obtained in exactly the same manner as in Example 1 except that the organic solvent-insoluble silicone powder was removed. Also,
As a result of measuring the physical properties of the obtained sealing composition, JIS-K-
The consistency (unmixed) of 2220-5-3 was 120, the plasticity of JIS-K-6300-6 was 210, and the specific gravity at 25 ° C was 1.32.
【００２４】比較例３．加硫したジメチルシリコーンゴ
ムを、実施例と全く同様にして電話回線分岐ボックスの
蓋のシール材として用いたところ、複雑な形状部分に
は、ゴムシートがうまくセットできず、シール性も悪か
った。Comparative Example 3. When vulcanized dimethyl silicone rubber was used as a sealing material for the cover of the telephone line branch box in exactly the same manner as in the example, the rubber sheet could not be set well in the complicated shape part and the sealing property was poor.
【００２５】比較例４．未加硫のブチルゴムを、実施例
と全く同様にして電話回線分岐ボックスの蓋のシール材
として用いたところ、シール性はあったものの、経時に
よってゴムの加硫が進んだために完全に接着し、３年後
には蓋を開けられなかった。また外側に露呈していた部
分がヒビ割れており、耐候性の悪いものであった。Comparative Example 4. When unvulcanized butyl rubber was used as a sealing material for the cover of the telephone line branch box in exactly the same manner as in the example, although it had sealing properties, it completely adhered because the rubber vulcanized over time. After three years I couldn't open the lid. Further, the portion exposed to the outside was cracked and had poor weather resistance.
Claims (1)
０Ｐ（ポイズ）〜４００，０００Ｐである直鎖状高重合
度のシリコーン１００重量部、（２）有機溶剤可溶性シ
リコーンレジン５〜２００重量部、（３）有機溶剤不溶
性シリコーン粉末５〜２００重量部、及び、（４）平均
粒径が５００μｍ以下の無機充填材１０〜３００重量部
からなることを特徴とするシール性組成物。1. The viscosity at 25 ° C. is 20,000.
100 parts by weight of a linear high-polymerization silicone having a viscosity of 0P (poise) to 400,000, (2) 5 to 200 parts by weight of an organic solvent-soluble silicone resin, (3) 5 to 200 parts by weight of an organic solvent-insoluble silicone powder, And (4) a sealing composition comprising 10 to 300 parts by weight of an inorganic filler having an average particle size of 500 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15885196A JP3319948B2 (en) | 1996-05-29 | 1996-05-29 | Unvulcanized sealing composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15885196A JP3319948B2 (en) | 1996-05-29 | 1996-05-29 | Unvulcanized sealing composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09316332A true JPH09316332A (en) | 1997-12-09 |
| JP3319948B2 JP3319948B2 (en) | 2002-09-03 |
Family
ID=15680805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15885196A Expired - Fee Related JP3319948B2 (en) | 1996-05-29 | 1996-05-29 | Unvulcanized sealing composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3319948B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021125275A1 (en) * | 2019-12-17 | 2021-06-24 | 横浜ゴム株式会社 | Sealant composition |
-
1996
- 1996-05-29 JP JP15885196A patent/JP3319948B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021125275A1 (en) * | 2019-12-17 | 2021-06-24 | 横浜ゴム株式会社 | Sealant composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3319948B2 (en) | 2002-09-03 |
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