JP2001002867A - Center bearing support - Google Patents

Center bearing support

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Publication number
JP2001002867A
JP2001002867A JP11173543A JP17354399A JP2001002867A JP 2001002867 A JP2001002867 A JP 2001002867A JP 11173543 A JP11173543 A JP 11173543A JP 17354399 A JP17354399 A JP 17354399A JP 2001002867 A JP2001002867 A JP 2001002867A
Authority
JP
Japan
Prior art keywords
bearing support
center bearing
chlorinated polyethylene
chlorine content
mooney viscosity
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.)
Granted
Application number
JP11173543A
Other languages
Japanese (ja)
Other versions
JP3840841B2 (en
Inventor
Hiroaki Haga
浩章 芳賀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Vibracoustic Co Ltd
Original Assignee
Nok Vibracoustic Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nok Vibracoustic Co Ltd filed Critical Nok Vibracoustic Co Ltd
Priority to JP17354399A priority Critical patent/JP3840841B2/en
Publication of JP2001002867A publication Critical patent/JP2001002867A/en
Application granted granted Critical
Publication of JP3840841B2 publication Critical patent/JP3840841B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Sliding-Contact Bearings (AREA)
  • Vibration Prevention Devices (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a center bearing support exhibiting an excellently low dynamic-to- static modulus ratio and excellent in durability and ozone resistance by molding a vulcanizate of a chlorinated polyethylene having a Mooney viscosity of a specific value or higher and a chlorine content of a specific value or higher. SOLUTION: There is provided a composition comprising a chlorinated polyethylene having a Mooney viscosity MS1+4 (100 deg.C) of at least 55 and a chlorine content of 25-35 wt.% having incorporated therein a vulcanizing agent, an acid acceptor such as an oxide or a hydroxide of a divalent metal, hydrotalcite or the like, a reinforcing agent or filler such as carbon black, silica or the like, each in a specified amount, and further, if necessary, a plasticizer, an antioxidant, a softening agent, a tackifier and the like. The composition is kneaded and subsequently vulcanization-molded by means of a compression molding machine or the like at a temperature of 140-250 deg.C and a pressure of 2-50 MPa for 1-30 min to give a molded product. As the vulcanizing agent, there can be mentioned organic oxides, trithiocyanurate compounds, thiourea compounds and the like, and the organic peroxides are used jointly with a polyfunctional unsaturated compound such as triallylcyanurate or the like and a crosslinking auxiliary.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、センタベアリング
サポートに関する。更に詳しくは、低動倍率性、耐久
性、耐オゾン性、低温特性などにすぐれたセンターベア
リングサポートに関する。
[0001] The present invention relates to a center bearing support. More specifically, the present invention relates to a center bearing support excellent in low dynamic magnification, durability, ozone resistance, low-temperature characteristics, and the like.

【0002】[0002]

【従来の技術】近年、自動車の高出力化や高性能化に伴
ない、プロペラシャフト(エンジンから後輪デファレン
シャルへ駆動力を伝達するシャフト)を防振支持するセ
ンターベアリングサポート近傍の環境が高温下傾向にあ
り、これに用いられる材料の耐熱性向上要求が高まりつ
つある。また、信頼性向上のための耐久性や自動車の靜
粛性のための防振性などの向上も、必要課題となってい
る。
2. Description of the Related Art In recent years, as the output and performance of automobiles have increased, the environment in the vicinity of a center bearing support for vibration-proofing and supporting a propeller shaft (a shaft for transmitting driving force from an engine to a rear wheel differential) has been exposed to high temperatures. There is an increasing demand for improved heat resistance of the materials used for this. In addition, improvements in durability for improving reliability and vibration-proofing for quietness of automobiles are also required.

【0003】従来、センターベアリングサポート用成形
材料としては、天然ゴム、天然ゴム/SBRブレンドゴム、
クロロプレンゴム等が用いられてきたが、最近のセンタ
ーベアリングサポートの性能向上要求に対して、天然ゴ
ムでは耐熱性が、また天然ゴム/SBRブレンドゴムやクロ
ロプレンゴムでは耐久性や耐オゾン性などの面で、機能
を満足させることが困難な状況となりつつある。更に、
動倍率の更なる低減も、要求されている。
Conventionally, as a molding material for the center bearing support, natural rubber, natural rubber / SBR blend rubber,
Chloroprene rubber has been used, but in response to recent demands for improved performance of center bearing supports, natural rubber has heat resistance, while natural rubber / SBR blend rubber and chloroprene rubber have durability and ozone resistance. Therefore, it is becoming difficult to satisfy the functions. Furthermore,
Further reduction in dynamic magnification is also required.

【0004】[0004]

【発明が解決しようとする課題】本発明の目的は、低動
倍率性(ゴムの変形速度上昇に伴う弾性率の増大が小さ
いこと)、耐久性(ゴムのくり返し変形による破壊に対す
る耐力)、耐オゾン性(ゴムのオゾンによる劣化や物性変
化に対する耐性)などにすぐれたセンターベアリングサ
ポートを提供することにある。
SUMMARY OF THE INVENTION The object of the present invention is to provide a low dynamic magnification (a small increase in the elastic modulus due to an increase in the deformation speed of rubber), durability (proof strength against destruction by repeated deformation of rubber), and durability. It is an object of the present invention to provide a center bearing support having excellent ozone properties (resistance to deterioration and physical property change of rubber due to ozone).

【0005】[0005]

【課題を解決するための手段】かかる本発明の目的は、
ムーニー粘度MS1+4(100℃)が55ポイント以上でかつ塩素
含有量が25〜35重量%の塩素化ポリエチレンの加硫物よ
りなるセンターベアリングサポートによって達成され
る。
SUMMARY OF THE INVENTION The object of the present invention is as follows.
Achieved by a center bearing support consisting of a chlorinated polyethylene vulcanizate with a Mooney viscosity MS 1 + 4 (100 ° C.) of 55 points or more and a chlorine content of 25 to 35% by weight.

【0006】[0006]

【発明の実施の形態】塩素化ポリエチレンとしては、そ
のムーニー粘度MS1+4(100℃)[JIS K-6300準拠]が55ポイ
ント以上、好ましくは約60〜100ポイントでかつ塩素含
有量が25〜35重量%、好ましくは30〜33重量%のものが用
いられる。ムーニー粘度がこれ以下のものを用いると、
引張強さが十分ではなく、一方これ以上のものを用いる
と、ゴム材料としての成形加工が困難となる。また、こ
れ以下の塩素含有量のものでも、ゴム材料としての成形
加工が困難となり、一方これ以上の塩素含有量のものを
用いると、低温特性が低下し、センターベアリングサポ
ートとしての機能が満足されなくなる。
BEST MODE FOR CARRYING OUT THE INVENTION Chlorinated polyethylene has a Mooney viscosity MS 1 + 4 (100 ° C.) (based on JIS K-6300) of 55 points or more, preferably about 60 to 100 points, and a chlorine content of 25 points. What is used is -35% by weight, preferably 30-33% by weight. When Mooney viscosity is less than this,
If the tensile strength is not sufficient, and if the tensile strength is more than this, molding as a rubber material becomes difficult. Even with a chlorine content of less than this, molding processing as a rubber material becomes difficult.On the other hand, when a material with a chlorine content of more than this is used, the low-temperature characteristics are reduced and the function as a center bearing support is satisfied. Disappears.

【0007】塩素化ポリエチレンの加硫剤としては、有
機過酸化物、トリチオシアヌル酸(メルカプトトリアジ
ン)系、チオウレア系、第4級ホスホニウム系等の少くと
も一種が用いられ、6-炭化水素置換アミノ-1,3,5-トリ
アジン-2,4-ジチオールの場合には有機過酸化物との併
用もあり得る(特開昭62-79247号公報)。更に、有機過酸
化物は一般にトリアリルイソシアヌレート、トリアリル
シアヌレート等の多官能性不飽和化合物と架橋助剤と併
用され、またチオウレア系加硫剤はチウラム類と併用さ
れることもある(特開平2-34644号公報)。
As a vulcanizing agent for chlorinated polyethylene, at least one of organic peroxide, trithiocyanuric acid (mercaptotriazine), thiourea, quaternary phosphonium, etc. is used. In the case of 1,3,5-triazine-2,4-dithiol, it may be used in combination with an organic peroxide (JP-A-62-79247). Further, an organic peroxide is generally used in combination with a polyfunctional unsaturated compound such as triallyl isocyanurate and triallyl cyanurate and a crosslinking aid, and a thiourea vulcanizing agent may be used in combination with thiurams ( JP-A-2-34644).

【0008】加硫剤以外にも、2価金属の酸化物または
水酸化物、ハイドロタルサイト類等からなる受酸剤、カ
ーボンブラック、シリカ等の補強剤または充填剤が塩素
化ポリエチレンに添加され、更に必要に応じて可塑剤、
老化防止剤、軟化剤、粘着防止剤等が材料物性の改善や
生地加工、成形加工用加工助剤として添加されて用いら
れる。
In addition to the vulcanizing agent, an acid acceptor comprising an oxide or hydroxide of a divalent metal, a hydrotalcite, a reinforcing agent or a filler such as carbon black or silica is added to the chlorinated polyethylene. , And if necessary, a plasticizer,
An anti-aging agent, a softening agent, an anti-adhesive agent and the like are added and used as processing aids for improving material properties, fabric processing and molding.

【0009】以上の各成分は、オープンロール、バンバ
リーミキサ、ニーダ等を用いて混練され、混練物は加熱
圧縮成形機、注入成形機、射出成形機を用い、温度約14
0〜250℃、圧力約2〜50MPa、時間約1〜30分間の条件下
で、センターベアリングサポートに加硫成形される。
The above components are kneaded using an open roll, a Banbury mixer, a kneader or the like, and the kneaded material is heated at about 14 ° C. using a heat compression molding machine, an injection molding machine, or an injection molding machine.
It is vulcanized and formed on the center bearing support under the conditions of 0 to 250 ° C, pressure of about 2 to 50 MPa, and time of about 1 to 30 minutes.

【0010】[0010]

【発明の効果】本発明に係るセンターベアリングサポー
トは、低温特性などを実質的に損うことなく、引張強
さ、デマッチャ屈曲試験による亀裂発生回数からみた耐
久性、動倍率によって示される防振性、耐オゾン性など
の点において、特にすぐれた改善を達成させている。
As described above, the center bearing support according to the present invention has excellent durability at a tensile strength, the number of occurrences of cracks in a dematcher bending test, and an anti-vibration property indicated by a dynamic magnification without substantially impairing the low-temperature characteristics. In particular, excellent improvements are achieved in terms of ozone resistance and the like.

【0011】[0011]

【実施例】次に、実施例について本発明を説明する。Next, the present invention will be described with reference to examples.

【0012】 実施例1 塩素化ポリエチレン(大阪曹達製品ダイソラックN130) 100重量部 〔MS1+4(100℃)60、塩素含有量30%〕 SRF-HSカーボンブラック(東海カーボン製品シーストSVH) 20 〃 酸化マグネシウム(協和化学製品キョーマグ#150) 10 〃 老化防止剤(大内新興化学製品ノクラックRD) 1 〃 ジオクチルセバケート 10 〃 イオウ 0.1 〃 有機過酸化物(三建化工製品サンペロックスTY-1・3) 3 〃 トリアリルイソシアヌレート(日本化成製品タイクM60) 3 〃 以上の各配合成分をニーダで混練し、混練物を180℃、2
0MPa、10分間の条件下で圧縮成形された。
Example 1 100 parts by weight of chlorinated polyethylene (Osaka Soda product Daisolak N130) [MS 1 + 4 (100 ° C.) 60, chlorine content 30%] SRF-HS carbon black (Tokai Carbon Product Seast SVH) 20〃 Magnesium oxide (Kyowa Chemicals Kyomag # 150) 10 〃 Anti-aging agent (Ouchi Emerging Chemicals Nocrack RD) 1 ジ オ Dioctyl sebacate 10 〃 Sulfur 0.1 〃 Organic peroxide (Sanperox TY-1.3 ) 3 〃 Triallyl isocyanurate (Nippon Kasei's product Tyke M60) 3 〃 Knead each of the above ingredients with a kneader.
It was compression molded under the conditions of 0 MPa and 10 minutes.

【0013】加硫物について、次の各項目の測定を行っ
た。 常態物性:JIS K-6310に準拠 空気加熱老化試験:100℃、70時間後の常態物性変化 圧縮永久歪:100℃、70時間 Kd 400Hz/Kst(動倍率):変形速度が1%/秒時の材料の弾
性率に対する変形速度が400%/秒時の材料の弾性率の比 Kst 80℃/Kst 25℃:25℃における材料の静的弾性率に
対する80℃における材料の静的弾性率の比 デマッチャ屈曲試験:亀裂発生回数を測定 ゲーマン捩り試験:T100値(低温特性)を測定 耐オゾン性試験:オゾン濃度50pphm、40℃、0〜20%変
形、1Hz動的条件下における目視亀裂発生時間を測定
The following items were measured for the vulcanized product. Normal properties: Conforms to JIS K-6310 Air heating aging test: Changes in normal properties after 70 hours at 100 ° C Compression set: 100 ° C, 70 hours Kd 400 Hz / Kst (dynamic magnification): When the deformation rate is 1% / sec Ratio of the elastic modulus of the material when the deformation rate is 400% / sec to the elastic modulus of the material Kst 80 ℃ / Kst 25 ℃ : The ratio of the static elastic modulus of the material at 80 ℃ to the static elastic modulus of the material at 25 ℃ de Mattia flex test: crack occurrence frequency measurement Gehman torsion test: T 100 value measured ozone resistance test (low temperature properties): ozone concentration 50 pphm, 40 ° C., 0 to 20% deformation, visually cracking time in 1Hz dynamic conditions Measure

【0014】 実施例2 塩素化ポリエチレン(ダイソラックN130) 100重量部 SRF-HSカーボンブラック(シーストSVH) 20 〃 酸化マグネシウム(キョーマグ#150) 10 〃 老化防止剤(ノクラックRD) 1 〃 ジオクチルセバケート 10 〃 トリチオシアヌル酸(三協化成製品ジスネットOF 100/0.7) 2 〃 加硫促進剤(大阪曹達製品M 181/0.7) 4 〃 以上の各配合成分を用い、実施例1と同様に加硫および
測定が行われた。
Example 2 Chlorinated polyethylene (Daisorac N130) 100 parts by weight SRF-HS carbon black (Seast SVH) 20 〃 Magnesium oxide (Kyomag # 150) 10 〃 Antioxidant (Nocrack RD) 1 〃 Dioctyl sebacate 10 〃 Trithiocyanuric acid (Sankyo Kasei product Disnet OF 100 / 0.7) 2 Vulcanization accelerator (Osaka Soda product M 181 / 0.7) 4 Vulcanization and measurement were carried out in the same manner as in Example 1 using the above components. Was done.

【0015】実施例3 実施例2において、塩素化ポリエチレンとして、大阪曹
達製品ダイソラックN135[MS1+4(100℃)53、塩素含有量3
5%]が用いられた。
Example 3 In Example 2, as a chlorinated polyethylene, Daisorac N135 [MS 1 + 4 (100 ° C.) 53, manufactured by Osaka Soda;
5%] was used.

【0016】比較例1 実施例2において、塩素化ポリエチレンとして、大阪曹
達製品ダイソラックRA135[MS1+4(100℃)32、塩素含有量
35%]が用いられた。
Comparative Example 1 In Example 2, as chlorinated polyethylene, Daisorac RA135 [MS 1 + 4 (100 ° C.) 32, manufactured by Osaka Soda;
35%] was used.

【0017】比較例2 実施例2において、塩素化ポリエチレンとして、昭和電
工製品エラスレン401A[MS1+4(100℃)100、塩素含有量40
%]が用いられた。
Comparative Example 2 In Example 2, as chlorinated polyethylene, Showa Denko Eraslen 401A [MS 1 + 4 (100 ° C.) 100, chlorine content 40
%] Was used.

【0018】比較例3 実施例2において、塩素化ポリエチレンとして、昭和電
工製品エラスレン403A[MS1+4(100℃)50、塩素含有量40
%]が用いられた。
Comparative Example 3 In Example 2, as chlorinated polyethylene, Showa Denko Eraslen 403A [MS 1 + 4 (100 ° C.) 50, chlorine content 40]
%] Was used.

【0019】比較例4 センターベアリングサポート用クロロプレンゴム材料の
加硫物(180℃、4分間)について、実施例1と同様の測定
が行われた。
Comparative Example 4 The same measurement as in Example 1 was performed on a vulcanized chloroprene rubber material for a center bearing support (180 ° C., 4 minutes).

【0020】比較例5 センターベアリングサポート用天然ゴム/SBRブレンドゴ
ム材料の加硫物(150℃、10分間)について、実施例1と同
様の測定が行われた。
Comparative Example 5 The same measurement as in Example 1 was performed on a vulcanized product (150 ° C., 10 minutes) of a natural rubber / SBR blend rubber material for a center bearing support.

【0021】以上の各実施例および比較例における測定
結果は、次の表に示される。 表 実施例 比較例 測定項目 基準値 1 2 3 1 2 3 4 5 [常態物性] 硬さ (JIS A) 60〜70 66 67 66 63 69 66 69 64 100%モジュラス (MPa) 2.0〜6.0 2.5 3.8 3.5 2.4 4.0 3.8 4.2 3.7 引張強さ (MPa) >18 24.5 22.0 19.6 14.0 21.5 11.0 15.7 17.4 伸び (%) >300 430 400 350 240 380 150 390 430 [空気加熱老化試験] 硬さ変化 (ポイント) 最大+5 +4 +2 +1 +2 +2 +1 +3 +6 引張強さ変化率 (%) 最大-20 +20 +10 +7 -1 -3 +4 +2 -8 伸び変化率 (%) 最大-20 +2 -5 -3 -6 -10 -5 -9 -26 [圧縮永久歪] 100℃、70時間 (%) 最大40 21 30 27 27 22 45 54 36 [Kd400Hz/Kst] 弾性率比 最大2.5 2.05 1.80 2.33 2.85 3.33 3.80 5.03 2.37 [Kst 80℃/Kst 25℃] 弾性率比 最大1.5 0.80 0.82 0.83 0.86 0.92 1.10 0.65 0.90 [デマッティア屈曲試験] 亀裂発生回数 (×104回) >100 >100 >100 >100 45 >100 72 >100 <5 [ゲーマン捩り試験] T100 (℃) <-40 -43 -43 -40 -38 -34 -32 -44 -53 [耐オゾン性] 目視亀裂発生 (時間) >100 >200 >200 >200 >200 >200 >200 70 10
The measurement results in the above Examples and Comparative Examples are shown in the following table. Table Example Comparative Example Measurement Item Standard Value 1 2 3 1 2 3 4 5 [Normal Physical Property] Hardness (JIS A) 60 to 70 66 67 66 63 69 66 69 64 100% Modulus (MPa) 2.0 to 6.0 2.5 3.8 3.5 2.4 4.0 3.8 4.2 3.7 Tensile strength (MPa)> 18 24.5 22.0 19.6 14.0 21.5 11.0 15.7 17.4 Elongation (%)> 300 430 400 350 240 380 150 390 430 [Air heating aging test] Hardness change (point) Max. + 5 +4 +2 +1 +2 +2 +1 +3 +6 Tensile strength change (%) Max.-20 +20 +10 +7 -1 -3 +4 +2 -8 Elongation change (%) Max. -20 +2 -5 -3 -6 -10 -5 -9 -26 [Permanent set] 100 ° C, 70 hours (%) Max 40 21 30 27 27 22 45 54 36 [Kd400Hz / Kst] Modulus ratio Max 2.5 2.05 1.80 2.33 2.85 3.33 3.80 5.03 2.37 [Kst 80 ° C / Kst 25 ° C] Modulus of elasticity Max 1.5 0.80 0.82 0.83 0.86 0.92 1.10 0.65 0.90 [Dematia bending test] Number of cracks (× 10 4 times)>100>100>100> 100 45> 100 72> 100 <5 [Geman torsion test] T 100 (℃) <-40 -43 -43 -40 -38 -34 -32 -44 -53 [Ozone resistance] Visual cracking (time )>100>200>200>200>200>200> 200 70 10

【0022】以上の結果から、次のようなことがいえ
る。 実施例1:引張強さやデマッチャ屈曲試験による亀裂発
生回数の値が大きく、またセンターベアリングサポート
材としては動倍率の値が小さい方が好ましいが、これに
ついても小さな値となっている 実施例2:加硫系を過酸化物系からトリチオシアヌル酸
系に変更したが、引張強さ、デマッチャ屈曲試験による
亀裂発生回数、動倍率などのゴム材料物性は良好な値を
示している 実施例3:塩素含有量35%の塩素化ポリエチレンを使用
すると、ゲーマン捩り試験によるT100値(低温特性)や動
倍率に若干の低下が認められるものの、全体としてセン
ターベアリングサポート材としてのバランスにすぐれて
いる 比較例1:ムーニー粘度の小さいポリマーを使用する
と、引張強さやデマッチャ屈曲試験による亀裂発生回数
の低下が著しい 比較例2:ムーニー粘度が大きくかつ塩素含有量の大き
なポリマーを使用すると、引張強さやデマッチャ屈曲試
験による亀裂発生回数は良好な値を示すものの、ゲーマ
ン捩り試験によるT100値(低温特性)の低下が著しい 比較例3:ムーニー粘度が小さくまた塩素含有量の大き
なポリマーを使用すると、引張強さやデマッチャ屈曲試
験による亀裂発生回数のみならず、ゲーマン捩り試験に
よるT100値(低温特性)の低下も著しい 比較例4:センターベアリングサポート材として一般的
に使用されているクロロプレンゴム材料にあっては、実
施例のものと比較して、引張強さが小さく、動倍率が大
きく、また耐オゾン性も劣っている 比較例5:センターベアリングサポート用天然ゴム/SBR
ブレンドゴム材にあっては、実施例のものと比較して、
特にデマッチャ屈曲試験による亀裂発生回数や耐オゾン
性が劣っている
From the above results, the following can be said. Example 1: It is preferable that the value of the number of cracks generated by the tensile strength and the dematcher bending test is large, and that the value of the dynamic magnification of the center bearing support material is small, but this is also a small value. The vulcanization system was changed from a peroxide system to a trithiocyanuric acid system, but rubber material properties such as tensile strength, number of cracks generated by a dematcher bending test, and dynamic magnification showed good values. with 35% the amount of chlorinated polyethylene, 100 value T by Gehman torsion test although a slight drop in (low-temperature properties) and dynamic factor is observed, Comparative examples are excellent in balance of the center bearing support member as a whole 1 : When a polymer having a low Mooney viscosity is used, the tensile strength and the number of occurrences of cracks in a dematcher bending test are significantly reduced. When the knee viscosity increases and use of polymers having a high chlorine content, although the tensile strength and crack count by de Mattia flex test show good value, Comparative Example decreases significantly the Gehman torsion test 100 value T by (low temperature properties) 3: Mooney viscosity use large polymer decreases also the chlorine content, the tensile strength and not by de Mattia flex test crack number only, Gehman 100 value T by a torsion test significant comparative example reduction of (low-temperature characteristics) 4: The chloroprene rubber material generally used as a center bearing support material has a lower tensile strength, a higher dynamic magnification, and an inferior ozone resistance as compared with those of the examples. 5: Natural rubber for center bearing support / SBR
In the case of the blended rubber material, as compared with those of the examples,
In particular, the number of cracks generated by the dematcher bending test and the ozone resistance are poor.

─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成11年7月9日(1999.7.9)[Submission date] July 9, 1999 (1999.7.9)

【手続補正1】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0002[Correction target item name] 0002

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0002】[0002]

【従来の技術】近年、自動車の高出力化や高性能化に伴
ない、プロペラシャフト(エンジンから後輪デファレン
シャルへ駆動力を伝達するシャフト)を防振支持するセ
ンターベアリングサポート近傍の環境が高温化傾向にあ
り、これに用いられる材料の耐熱性向上要求が高まりつ
つある。また、信頼性向上のための耐久性や自動車の靜
粛性のための防振性などの向上も、必要課題となってい
る。
2. Description of the Related Art In recent years, as the output and performance of automobiles have increased, the environment in the vicinity of the center bearing support, which supports the propeller shaft (shaft that transmits the driving force from the engine to the rear wheel differential), has become hotter. tend, there is a growing improved heat resistance requirements material used for this. In addition, improvements in durability for improving reliability and vibration-proofing for quietness of automobiles are also required.

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3J011 SC12 4J002 BB241 EK006 EU196 EV126 EV346 FD146 GM00 4J100 AA02P BB01H CA01 DA09 DA28 DA47 HA22 HA53 JA28 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J011 SC12 4J002 BB241 EK006 EU196 EV126 EV346 FD146 GM00 4J100 AA02P BB01H CA01 DA09 DA28 DA47 HA22 HA53 JA28

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ムーニー粘度MS1+4(100℃)が55ポイント
以上でかつ塩素含有量が25〜35重量%の塩素化ポリエチ
レンの加硫物よりなるセンターベアリングサポート。
1. A center bearing support comprising a vulcanized chlorinated polyethylene having a Mooney viscosity MS 1 + 4 (100 ° C.) of 55 points or more and a chlorine content of 25 to 35% by weight.
JP17354399A 1999-06-21 1999-06-21 Center bearing support Expired - Fee Related JP3840841B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17354399A JP3840841B2 (en) 1999-06-21 1999-06-21 Center bearing support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17354399A JP3840841B2 (en) 1999-06-21 1999-06-21 Center bearing support

Publications (2)

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JP2001002867A true JP2001002867A (en) 2001-01-09
JP3840841B2 JP3840841B2 (en) 2006-11-01

Family

ID=15962491

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP3840841B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018235587A1 (en) 2017-06-22 2018-12-27 Nok株式会社 Rubber composition for anti-vibration rubber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018235587A1 (en) 2017-06-22 2018-12-27 Nok株式会社 Rubber composition for anti-vibration rubber
JP6504329B1 (en) * 2017-06-22 2019-04-24 Nok株式会社 Rubber composition for anti-vibration rubber
US11472952B2 (en) 2017-06-22 2022-10-18 Nok Corporation Rubber composition for anti-vibration rubber

Also Published As

Publication number Publication date
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