JP2008038133A5 - - Google Patents

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JP2008038133A5
JP2008038133A5 JP2007079313A JP2007079313A JP2008038133A5 JP 2008038133 A5 JP2008038133 A5 JP 2008038133A5 JP 2007079313 A JP2007079313 A JP 2007079313A JP 2007079313 A JP2007079313 A JP 2007079313A JP 2008038133 A5 JP2008038133 A5 JP 2008038133A5
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rubber
mass
parts
conveyor belt
rubber composition
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JP2007079313A
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JP4286298B2 (en
JP2008038133A (en
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Priority claimed from JP2007079313A external-priority patent/JP4286298B2/en
Priority to AU2007273485A priority patent/AU2007273485B2/en
Priority to PCT/JP2007/063894 priority patent/WO2008007733A1/en
Priority to CN2007800267928A priority patent/CN101490159B/en
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)20℃の測定温度下で、10%伸張させ、振幅±2%の振動を振動数10Hzで与えて測定した損失係数tanδが0.04〜0.07となり、
下記式[1]に示すエネルギーロス指数(ΔH)が0.080以下となる、上記(1)〜(5)のいずれかに記載のコンベヤベルト用ゴム組成物。
ΔH=(SpGr×tanδ)/M25 [1]
ここで、SpGrは、20℃での比重(g/cm3 )、tanδは、20℃の測定温度下で、10%伸張させ、振幅±2%の振動を振動数10Hzで与えて測定した損失係数、M25は、25%伸び時における引張応力(MPa)である。
( 6 ) The loss factor tan δ measured by extending 10% at a measurement temperature of 20 ° C. and applying vibration with an amplitude of ± 2% at a frequency of 10 Hz is 0.04 to 0.07.
The rubber composition for conveyor belts according to any one of (1) to (5) , wherein an energy loss index (ΔH) represented by the following formula [1] is 0.080 or less.
ΔH = (SpGr × tan δ) / M 25 [1]
Here, SpGr is a specific gravity (g / cm 3 ) at 20 ° C., tan δ is a loss measured by extending 10% at a measurement temperature of 20 ° C., and giving a vibration with an amplitude of ± 2% at a frequency of 10 Hz. The coefficient, M 25, is the tensile stress (MPa) at 25% elongation.

(7)上面カバーゴム層、補強層および下面カバーゴム層からなるコンベヤベルトであって、  (7) A conveyor belt comprising an upper cover rubber layer, a reinforcing layer and a lower cover rubber layer,
上記下面カバーゴム層の少なくとも裏面表面が、上記(1)〜(6)のいずれかに記載のコンベヤベルト用ゴム組成物により形成される、コンベヤベルト。  A conveyor belt, wherein at least the back surface of the lower surface cover rubber layer is formed of the rubber composition for a conveyor belt according to any one of (1) to (6).

Claims (7)

天然ゴム(NR)およびポリブタジエンゴム(BR)からなるゴム成分と、カーボンブラックと、シリカと、シランカップリング剤と、ジエチレングリコールとを含有し、
前記ゴム成分中の天然ゴムとポリブタジエンゴムとの量比(NR/BR)が、80/20〜25/75であり、
前記カーボンブラックの含有量が、前記ゴム成分100質量部に対して15〜35質量部であり、
前記シリカの含有量が、前記ゴム成分100質量部に対して5〜25質量部であり、
前記シランカップリング剤の含有量が、前記ゴム成分100質量部に対して0.5〜3質量部であり、
前記ジエチレングリコールの含有量が、前記ゴム成分100質量部に対して0.5〜4.5質量部である、コンベヤベルト用ゴム組成物。
A rubber component comprising natural rubber (NR) and polybutadiene rubber (BR), carbon black, silica, a silane coupling agent, and diethylene glycol;
The ratio of natural rubber to polybutadiene rubber (NR / BR) in the rubber component is 80/20 to 25/75,
The carbon black content is 15 to 35 parts by mass with respect to 100 parts by mass of the rubber component,
The silica content is 5 to 25 parts by mass with respect to 100 parts by mass of the rubber component,
The content of the silane coupling agent is 0.5 to 3 parts by mass with respect to 100 parts by mass of the rubber component,
The rubber composition for conveyor belts whose content of the said diethylene glycol is 0.5-4.5 mass parts with respect to 100 mass parts of said rubber components.
更に、1,3−ビス(シトラコンイミドメチル)ベンゼン、および/または、ヘキサメチレン−1,6−ビス(チオサルフェート)二ナトリウム塩ニ水和物を含有する、請求項1に記載のコンベヤベルト用ゴム組成物。   The conveyor belt according to claim 1, further comprising 1,3-bis (citraconimidomethyl) benzene and / or hexamethylene-1,6-bis (thiosulfate) disodium salt dihydrate. Rubber composition. 前記1,3−ビス(シトラコンイミドメチル)ベンゼン、および/または、前記ヘキサメチレン−1,6−ビス(チオサルフェート)二ナトリウム塩ニ水和物の含有量が、前記ゴム成分100質量部に対して0.1〜2質量部である、請求項2に記載のコンベヤベルト用ゴム組成物。   The content of the 1,3-bis (citraconimidomethyl) benzene and / or the hexamethylene-1,6-bis (thiosulfate) disodium salt dihydrate is based on 100 parts by mass of the rubber component. The rubber composition for conveyor belts of Claim 2 which is 0.1-2 mass parts. 前記シリカの窒素吸着比表面積(N2SA)が、100〜250m2/gである請求項1〜3のいずれかに記載のコンベヤベルト用ゴム組成物。 The rubber composition for conveyor belts according to any one of claims 1 to 3, wherein the silica has a nitrogen adsorption specific surface area (N 2 SA) of 100 to 250 m 2 / g. 前記ポリブタジエンゴム(BR)が、末端変性ポリブタジエンゴムである請求項1〜4のいずれかに記載のコンベヤベルト用ゴム組成物。   The rubber composition for a conveyor belt according to any one of claims 1 to 4, wherein the polybutadiene rubber (BR) is a terminal-modified polybutadiene rubber. 20℃の測定温度下で、10%伸張させ、振幅±2%の振動を振動数10Hzで与えて測定した損失係数tanδが0.04〜0.07となり、  Under a measurement temperature of 20 ° C., the loss factor tan δ measured by extending 10% and giving a vibration with an amplitude of ± 2% at a frequency of 10 Hz is 0.04 to 0.07.
下記式[1]に示すエネルギーロス指数(ΔH)が0.080以下となる、請求項1〜5のいずれかに記載のコンベヤベルト用ゴム組成物。  The rubber composition for conveyor belts according to any one of claims 1 to 5, wherein an energy loss index (ΔH) represented by the following formula [1] is 0.080 or less.
ΔH=(SpGr×tanδ)/M    ΔH = (SpGr × tan δ) / M 25twenty five [1]          [1]
ここで、SpGrは、20℃での比重(g/cm  Here, SpGr is specific gravity at 20 ° C. (g / cm 3Three )、tanδは、20℃の測定温度下で、10%伸張させ、振幅±2%の振動を振動数10Hzで与えて測定した損失係数、M ), Tan δ is a loss coefficient measured by extending 10% at a measurement temperature of 20 ° C. and applying vibration with an amplitude of ± 2% at a frequency of 10 Hz, M 25twenty five は、25%伸び時における引張応力(MPa)である。Is the tensile stress (MPa) at 25% elongation.
上面カバーゴム層、補強層および下面カバーゴム層からなるコンベヤベルトであって、
前記下面カバーゴム層の少なくとも裏面表面が、請求項1〜のいずれかに記載のコンベヤベルト用ゴム組成物により形成される、コンベヤベルト。
A conveyor belt comprising an upper cover rubber layer, a reinforcing layer and a lower cover rubber layer,
A conveyor belt, wherein at least the back surface of the lower cover rubber layer is formed of the rubber composition for a conveyor belt according to any one of claims 1 to 6 .
JP2007079313A 2006-07-14 2007-03-26 Rubber composition for conveyor belt and conveyor belt Active JP4286298B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2007079313A JP4286298B2 (en) 2006-07-14 2007-03-26 Rubber composition for conveyor belt and conveyor belt
AU2007273485A AU2007273485B2 (en) 2006-07-14 2007-07-12 Rubber composition for conveyor belt and conveyor belt
PCT/JP2007/063894 WO2008007733A1 (en) 2006-07-14 2007-07-12 Rubber composition for conveyor belt and conveyor belt
CN2007800267928A CN101490159B (en) 2006-07-14 2007-07-12 Rubber composition for conveyor belt and conveyor belt

Applications Claiming Priority (2)

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JP2006194693 2006-07-14
JP2007079313A JP4286298B2 (en) 2006-07-14 2007-03-26 Rubber composition for conveyor belt and conveyor belt

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JP2008038133A JP2008038133A (en) 2008-02-21
JP2008038133A5 true JP2008038133A5 (en) 2009-04-02
JP4286298B2 JP4286298B2 (en) 2009-06-24

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CN (1) CN101490159B (en)
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WO (1) WO2008007733A1 (en)

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