JPH0434252A - Heat resistant toothed belt - Google Patents
Heat resistant toothed beltInfo
- Publication number
- JPH0434252A JPH0434252A JP14064290A JP14064290A JPH0434252A JP H0434252 A JPH0434252 A JP H0434252A JP 14064290 A JP14064290 A JP 14064290A JP 14064290 A JP14064290 A JP 14064290A JP H0434252 A JPH0434252 A JP H0434252A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- tooth
- sulfur
- toothed belt
- hydride
- 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.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 54
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 18
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 13
- 239000011593 sulfur Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000000178 monomer Substances 0.000 claims abstract description 11
- 150000007524 organic acids Chemical class 0.000 claims abstract description 11
- 239000004677 Nylon Substances 0.000 abstract description 3
- 229920001778 nylon Polymers 0.000 abstract description 3
- 229920000742 Cotton Polymers 0.000 abstract description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 150000004678 hydrides Chemical class 0.000 abstract 4
- 230000002542 deteriorative effect Effects 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005984 hydrogenation reaction Methods 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- BMFMTNROJASFBW-UHFFFAOYSA-N 2-(furan-2-ylmethylsulfinyl)acetic acid Chemical compound OC(=O)CS(=O)CC1=CC=CO1 BMFMTNROJASFBW-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 238000010059 sulfur vulcanization Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- UIGULSHPWYAWSA-UHFFFAOYSA-N 3-amino-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)C(N)CC(O)=O UIGULSHPWYAWSA-UHFFFAOYSA-N 0.000 description 1
- LIQDVINWFSWENU-UHFFFAOYSA-K aluminum;prop-2-enoate Chemical compound [Al+3].[O-]C(=O)C=C.[O-]C(=O)C=C.[O-]C(=O)C=C LIQDVINWFSWENU-UHFFFAOYSA-K 0.000 description 1
- OAKHANKSRIPFCE-UHFFFAOYSA-L calcium;2-methylprop-2-enoate Chemical compound [Ca+2].CC(=C)C([O-])=O.CC(=C)C([O-])=O OAKHANKSRIPFCE-UHFFFAOYSA-L 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- XKMZOFXGLBYJLS-UHFFFAOYSA-L zinc;prop-2-enoate Chemical compound [Zn+2].[O-]C(=O)C=C.[O-]C(=O)C=C XKMZOFXGLBYJLS-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、抗張体の上下に歯部ゴム部と背部ゴム部とを
有する耐熱性歯付ベルトに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heat-resistant toothed belt having a toothed rubber part and a back rubber part on the upper and lower sides of a tensile member.
（従来の技術）
一般に、抗張体の上下に歯部ゴム部と背部ゴム部とを有
する歯付ベルトは知られている。そのような歯付ベルト
において雰囲気温度が高い環境下で用いることができる
ように耐熱性を高める場合、一般にベルト材料として用
いられるクロロブレンゴムでは、組成物を改良しても、
耐熱性に限界がある。(Prior Art) Generally, a toothed belt having a toothed rubber part and a back rubber part above and below a tensile member is known. In order to improve the heat resistance of such toothed belts so that they can be used in environments with high ambient temperatures, chloroprene rubber, which is generally used as a belt material, cannot be used even if the composition is improved.
Heat resistance is limited.
そこで、耐熱性を高めるものとして、例えば特開昭６４
−８７９３７号公報に記載されるように、水素化ニトリ
ルゴムのパーオキサイド架橋系ゴム組成物を用いる歯付
ベルト（以下前者という）や、例えば特開昭６０−１７
２７４９号公報に記載されるように、水素化ニトリルゴ
ムの含イオウ架橋系ゴム組成物を用いる歯付ベルト（以
下後者という）が知られている。Therefore, as a method to improve heat resistance, for example, JP-A-64
As described in Japanese Patent Publication No. 87937, a toothed belt (hereinafter referred to as the former) using a peroxide crosslinked rubber composition of hydrogenated nitrile rubber, and
As described in Japanese Patent No. 2749, a toothed belt (hereinafter referred to as the latter) using a sulfur-containing crosslinked rubber composition of hydrogenated nitrile rubber is known.
（発明が解決しようとする課題）
ところが、前者のパーオキサイド（有機過酸化物）加硫
系では、酸化力の強い過酸化物を水素化ニトリルゴムの
架橋剤として作用させると、歯付ベルトの抗張体（６体
）として用いているコードを酸化させ、劣化させるおそ
れがあり、硫黄加硫系を用いる場合に比してコード（抗
張体）については安定性が悪い。(Problem to be Solved by the Invention) However, in the former peroxide (organic peroxide) vulcanization system, when a peroxide with strong oxidizing power acts as a crosslinking agent for hydrogenated nitrile rubber, the toothed belt becomes There is a risk that the cord used as the tensile body (6 bodies) will be oxidized and deteriorated, and the stability of the cord (tensile body) is poorer than when a sulfur vulcanization system is used.
一方、後者の水素化ニトリルゴムの硫黄加硫系では、Ｈ
−ＮＢＲの２重結合部分が少量のため十分な架橋強度が
得られず、物理的な性能が落ちるという問題があり、こ
れを防止するために、従来、硫黄を多量に配合する方法
及び補強剤を増量する方法が取られているが、十分にそ
の目的を達成していない。それは、硫黄の多量配合では
未反応の硫黄が多量に残り製品（歯付ベルト）となった
ときに硫黄が表面に浮き出てくるというブリード問題を
起こすし、熱老化特性が低下するからであり、また、補
強剤（カーボンブラック）の増量では基本的にゴムの補
強とはならないからである。On the other hand, in the latter sulfur vulcanization system of hydrogenated nitrile rubber, H
- Due to the small amount of double bonds in NBR, sufficient crosslinking strength cannot be obtained and the physical performance deteriorates.To prevent this, conventional methods include adding a large amount of sulfur and reinforcing agents. Measures have been taken to increase the amount of water, but this has not fully achieved the objective. This is because if a large amount of sulfur is added, a large amount of unreacted sulfur will remain and when the product (toothed belt) is made, sulfur will rise to the surface, causing a bleed problem, and the heat aging characteristics will deteriorate. Further, increasing the amount of reinforcing agent (carbon black) basically does not reinforce the rubber.
また、水素化ニトリルゴムを背部ゴム及び歯部ゴムに用
いた歯付ベルトにおいて、耐熱性をさらに向上させるた
めに、背部ゴム及び歯部ゴムに高水素化率（９５％）の
水素化ニトリルゴムを用いると、弾性率が低くなり、耐
熱負荷走行寿命等の耐熱負荷特性が大幅に低下する。In addition, in toothed belts that use hydrogenated nitrile rubber for the back rubber and tooth rubber, in order to further improve heat resistance, hydrogenated nitrile rubber with a high hydrogenation rate (95%) is used for the back rubber and tooth rubber. If used, the elastic modulus becomes low, and heat-resistant load characteristics such as heat-resistant load running life are significantly reduced.
本発明はかかる点に鑑みてなされたもので、弾性率、耐
熱負荷特性が低下することなく、耐熱性が向上した歯付
ベルトを提供することを目的とする。The present invention has been made in view of this point, and an object of the present invention is to provide a toothed belt with improved heat resistance without deterioration in elastic modulus and heat resistance load characteristics.
（課題を解決するための手段）
本発明は、含金属有機酸単量体を用いることにより、水
素化ニトリルゴムの弾性率、負荷走行寿命を改善するも
のである。(Means for Solving the Problems) The present invention improves the elastic modulus and load running life of hydrogenated nitrile rubber by using a metal-containing organic acid monomer.
本発明は、抗張体の上下に歯部ゴム部と背部ゴム部とを
有する歯付ベルトにおいて、上記歯部ゴム部の歯部ゴム
と背部ゴム部の背部ゴムが、水素化ニトリルゴム１００
重量部当たりに含金属有機酸単量体１〜１０重量部混合
されてなるイオウ架橋系組成物で構成されている。The present invention provides a toothed belt having a toothed rubber part and a back rubber part on the upper and lower sides of a tensile member, in which the toothed rubber of the toothed rubber part and the back rubber of the back rubber part are made of hydrogenated nitrile rubber 100.
It is composed of a sulfur crosslinked composition in which 1 to 10 parts by weight of a metal-containing organic acid monomer is mixed per part by weight.
（作用）
水素化ニトリルゴムの硫黄架橋系ゴム組成物が歯部ゴム
部の歯部ゴムと背部ゴム部の背部ゴムに用いられている
ので、耐熱老化性が向上し、耐熱走行寿命が向上する。(Function) Since the sulfur crosslinked rubber composition of hydrogenated nitrile rubber is used for the tooth rubber of the tooth rubber part and the back rubber of the back rubber part, heat aging resistance is improved and heat resistant running life is improved. .
高水素化率になればなるほど架橋に関与する二重結合が
少なくなるため、硫黄及び含硫黄化合物のみでは十分な
架橋物が得られず、歯付ベルトとして要求される負荷特
性が得られなくなるが、助剤として含金属有機酸単量体
を添加することによりその欠点が解消される。As the hydrogenation rate increases, the number of double bonds involved in crosslinking decreases, so sulfur and sulfur-containing compounds alone will not be able to obtain a sufficient crosslinked product, making it impossible to obtain the load characteristics required for a toothed belt. This drawback can be overcome by adding a metal-containing organic acid monomer as an auxiliary agent.
（実施例） 以下、本発明の実施例を図面に沿って詳細に説明する。(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.
歯付ベルトを示す第１図において、１は周知の如く接着
処理された抗張体としてのガラスコード、２．３は水素
化ニトリルゴムからなる背部ゴム部及び歯部ゴム部、４
は歯部ゴム部３の表面を被覆する補強帆布層で、予め接
着処理された綿帆布又はナイロン帆布によって構成され
ている。In FIG. 1 showing a toothed belt, reference numeral 1 indicates a glass cord as a tensile member which has been adhesively treated as is well known, 2.3 indicates a back rubber part and a toothed rubber part made of hydrogenated nitrile rubber, and 4 indicates a toothed belt.
is a reinforcing canvas layer that covers the surface of the toothed rubber portion 3, and is made of cotton canvas or nylon canvas that has been bonded in advance.
上記背部ゴム部２の背部ゴム及び歯部ゴム部３の歯部ゴ
ムは、高水素化率（９５％）の水素化ニトリルゴムの硫
黄架橋系ゴム組成物で構成され、水素化ニトリルゴム１
００重量部に対し、含金属有機酸単量体としてメタクリ
ル酸の金属塩１〜１０重量部を配合された組成物が用い
られている。The back rubber of the back rubber part 2 and the tooth rubber of the tooth rubber part 3 are made of a sulfur-crosslinked rubber composition of hydrogenated nitrile rubber with a high hydrogenation rate (95%).
A composition is used in which 1 to 10 parts by weight of a metal salt of methacrylic acid is blended as a metal-containing organic acid monomer to 00 parts by weight.
含金属有機酸単量体としては、メタクリル酸亜鉛、メタ
クリル酸アルミニウム、メタクリル酸カルシウム、アク
リル酸亜鉛、アクリル酸アルミニウム等が用いられる。As the metal-containing organic acid monomer, zinc methacrylate, aluminum methacrylate, calcium methacrylate, zinc acrylate, aluminum acrylate, etc. are used.
続いて、上述した歯付ベルト１について行った試験につ
いて説明する。Next, a test conducted on the toothed belt 1 described above will be explained.
試料ベルト
抗張体としてガラスコードを、帆布としてナイロン帆布
を用いて、表１に示すゴム組成物を背部ゴム及び歯部ゴ
ムとして、従来周知の方法で歯付ベルトを製造した。Sample Belt A toothed belt was manufactured by a conventionally known method using a glass cord as a tensile member, a nylon canvas as a canvas, and the rubber compositions shown in Table 1 as back rubber and tooth rubber.
試験方法
（１）耐熱走行試験
第２図に示すように、駆動プーリ２１（回転数３００Ｏ
ｒｐｍ）と従動プーリ２２との間に試料ベルト２３（ベ
ルト幅１９ｍｍ）を巻回し、その中間部分にアイドラプ
ーリ２４を適用し、ベルト初張力ＳＷ−１５ｋｇｆとし
、雰囲気温度１３０±３℃でもって走行させた。Test method (1) Heat-resistant running test As shown in Figure 2, the drive pulley 21 (rotation speed 300
The sample belt 23 (belt width 19 mm) was wound between the driven pulley 22 (rpm) and the driven pulley 22, the idler pulley 24 was applied to the intermediate part, the belt initial tension was set to SW-15 kgf, and the belt was run at an ambient temperature of 130 ± 3°C. I let it happen.
走行開始から、背部ゴム部あるいは歯部ゴム部（歯元部
）にクラックが発生するまでの時間を測定し、耐熱寿命
とした。The time from the start of running to the occurrence of cracks in the back rubber part or tooth rubber part (tooth root part) was measured, and the heat-resistant life was determined.
（１１）耐熱負荷走行試験
第３図に示すように、駆動プーリ３１（回転数６０００
ｒｐｍ）と従動プーリ３２（負荷４ＰＳ）との間に試料
ベルト３（ベルト幅１０ｍｍ）を巻回し、ベルト初張力
ＳＷ−２０ｋｇｆ、とし、雰囲気温度１００±３℃でも
って走行させた。(11) Heat-resistant load running test As shown in Figure 3, the drive pulley 31 (rotation speed 6000
The sample belt 3 (belt width 10 mm) was wound between the driven pulley 32 (load 4 PS) and the belt initial tension SW was -20 kgf, and the belt was run at an ambient temperature of 100±3°C.
走行開始から、背部ゴム部あるいは歯部ゴム部（歯元部
）にクラックが発生するまでの時間を測定し、耐熱負荷
寿命として評価した。The time from the start of running until the occurrence of cracks in the back rubber part or tooth rubber part (tooth root part) was measured and evaluated as the heat-resistant load life.
試験結果
表２に示す通りである。メタクリル酸亜鉛等の含金属有
機酸単量体を含有する本発明例１〜７の耐熱走行寿命及
び耐熱負荷走行寿命が優れることが判る。The test results are as shown in Table 2. It can be seen that Examples 1 to 7 of the present invention containing a metal-containing organic acid monomer such as zinc methacrylate have excellent heat-resistant running life and heat-resistant load running life.
以上のように、本発明例は、含金属有機酸単量体を助剤
として用いることにより、高水素化率の水素化ニトリル
ゴムの硫黄架橋系の弾性率を向上させ、耐熱負荷特性を
向上させることが可能となる。As described above, the present invention improves the elastic modulus of the sulfur crosslinked system of hydrogenated nitrile rubber with a high hydrogenation rate by using a metal-containing organic acid monomer as an auxiliary agent, and improves heat load resistance characteristics. It becomes possible to do so.
（発明の効果）
本発明は、上記のように、水素化ニトリルゴムの硫黄架
橋系ゴム組成物の助剤として所定量の含金属有機酸単量
体を用いるようにしたので、弾性率及び耐熱負荷特性を
損なうことなく、耐熱性を向上させることができる。(Effects of the Invention) As described above, the present invention uses a predetermined amount of a metal-containing organic acid monomer as an auxiliary agent in a sulfur-crosslinked rubber composition of hydrogenated nitrile rubber. Heat resistance can be improved without impairing load characteristics.
図面は本発明の実施例を示し、第１図は歯付ベレトの斜
視図、第２図及び第３図は試験方法の説１図である。
・・・・・・歯付ベルト
２・・・・・・背部ゴム部
４・・・・・・歯部ゴム部
手続補正書（自発）
補正の内容
明細書の第８頁の表１を次の通りに補正する。
平成２年 ８月２３日
１゜
２゜
３゜
事件の表示
平成２年特 許願第１４０６４２号
発明の名称
耐熱性歯付ベルト
補正をする者
事件との関係 特許出願人
住 所 兵庫県神戸市兵庫区明和通３丁目２番１５号
名 称 （５０６）バンド−化学株式会社代表者雀部
昌吾
代理人 〒５５０ 電話０６ （４４５）２１２８住
所 大阪市西区靭本町１丁目４番８号 太平ビル氏 名
弁理士（７７９３）前 １） 弘補正命令の日付The drawings show embodiments of the present invention, and FIG. 1 is a perspective view of a toothed beret, and FIGS. 2 and 3 are illustrations of a test method. ... Toothed belt 2 ... Back rubber section 4 ... Teeth rubber section Procedural amendment (voluntary) Table 1 on page 8 of the detailed statement of amendments is as follows: Correct as shown. Display of the August 23, 1990 1゜2゜3゜ case 1990 Patent Application No. 140642 Name of the invention Relationship to the person who corrects heat-resistant toothed belt case Patent applicant address Hyogo, Kobe City, Hyogo Prefecture 3-2-15 Meiwa-dori, Ward Name (506) Band - Kagaku Co., Ltd. Representative Shogo Suzube Address: 550 Phone: 06 (445) 2128 Address:
Address: Taihei Building, 1-4-8 Utsubohonmachi, Nishi-ku, Osaka Name: Patent Attorney (7793) 1) Date of Hiroshi amendment order
Claims (1)
る歯付ベルトにおいて、 上記歯部ゴム部の歯部ゴムと背部ゴム部の背部ゴムが、
水素化ニトリルゴム１００重量部当たりに含金属有機酸
単量体１〜１０重量部混合されてなるイオウ架橋系組成
物で構成されていることを特徴とする歯付ベルト。(1) In a toothed belt having a toothed rubber portion and a back rubber portion above and below a tensile member, the toothed rubber of the toothed rubber portion and the back rubber of the back rubber portion are
A toothed belt comprising a sulfur crosslinked composition in which 1 to 10 parts by weight of a metal-containing organic acid monomer are mixed per 100 parts by weight of hydrogenated nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14064290A JPH0434252A (en) | 1990-05-29 | 1990-05-29 | Heat resistant toothed belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14064290A JPH0434252A (en) | 1990-05-29 | 1990-05-29 | Heat resistant toothed belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0434252A true JPH0434252A (en) | 1992-02-05 |
Family
ID=15273418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14064290A Pending JPH0434252A (en) | 1990-05-29 | 1990-05-29 | Heat resistant toothed belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0434252A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05141480A (en) * | 1991-11-13 | 1993-06-08 | Mitsuboshi Belting Ltd | Toothed belt |
| JPH07259927A (en) * | 1994-03-16 | 1995-10-13 | Tsubakimoto Chain Co | Toothed belt |
| US6942590B2 (en) * | 2001-06-28 | 2005-09-13 | Bando Chemical Industries, Inc. | Belt fabric, and power transmission belt and high load power transmission V-belt using such a belt fabric |
-
1990
- 1990-05-29 JP JP14064290A patent/JPH0434252A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05141480A (en) * | 1991-11-13 | 1993-06-08 | Mitsuboshi Belting Ltd | Toothed belt |
| JPH07259927A (en) * | 1994-03-16 | 1995-10-13 | Tsubakimoto Chain Co | Toothed belt |
| US6942590B2 (en) * | 2001-06-28 | 2005-09-13 | Bando Chemical Industries, Inc. | Belt fabric, and power transmission belt and high load power transmission V-belt using such a belt fabric |
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