JP2015007170A - ゴム組成物の製造方法 - Google Patents
ゴム組成物の製造方法 Download PDFInfo
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- JP2015007170A JP2015007170A JP2013132300A JP2013132300A JP2015007170A JP 2015007170 A JP2015007170 A JP 2015007170A JP 2013132300 A JP2013132300 A JP 2013132300A JP 2013132300 A JP2013132300 A JP 2013132300A JP 2015007170 A JP2015007170 A JP 2015007170A
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- 239000005060 rubber Substances 0.000 title claims abstract description 75
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 35
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000011787 zinc oxide Substances 0.000 claims abstract description 30
- 239000000945 filler Substances 0.000 claims abstract description 14
- 238000004898 kneading Methods 0.000 claims description 68
- 235000014692 zinc oxide Nutrition 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 abstract description 12
- 238000004073 vulcanization Methods 0.000 description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 23
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- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 6
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- 229920001194 natural rubber Polymers 0.000 description 6
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- 230000001133 acceleration Effects 0.000 description 5
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- 239000005062 Polybutadiene Substances 0.000 description 4
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- 229910052799 carbon Inorganic materials 0.000 description 2
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- MCQZXSRTTKGBSJ-UHFFFAOYSA-N n-(pentan-2-ylideneamino)pyridine-4-carboxamide Chemical compound CCCC(C)=NNC(=O)C1=CC=NC=C1 MCQZXSRTTKGBSJ-UHFFFAOYSA-N 0.000 description 2
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- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 description 1
- YPIFGDQKSSMYHQ-UHFFFAOYSA-N 7,7-dimethyloctanoic acid Chemical compound CC(C)(C)CCCCCC(O)=O YPIFGDQKSSMYHQ-UHFFFAOYSA-N 0.000 description 1
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- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
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- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
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- WITDFSFZHZYQHB-UHFFFAOYSA-N dibenzylcarbamothioylsulfanyl n,n-dibenzylcarbamodithioate Chemical compound C=1C=CC=CC=1CN(CC=1C=CC=CC=1)C(=S)SSC(=S)N(CC=1C=CC=CC=1)CC1=CC=CC=C1 WITDFSFZHZYQHB-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】以下の工程:
(a)ゴム成分、ヒドラジド化合物及び充填剤を混練し、第1混練物を得る第1混練工程;
(b)第1混練物と亜鉛華を混練し、第2混練物を得る第2混練工程;及び
(c)第2混練物と加硫剤を混練し、第3混練物を得る第3混練工程;
をこの順で含むゴム組成物の製造方法。
【選択図】なし
Description
(a)ゴム成分、ヒドラジド化合物及び充填剤を混練し、第1混練物を得る第1混練工程;
(b)第1混練物と亜鉛華を混練し、第2混練物を得る第2混練工程;及び
(c)第2混練物と加硫剤を混練し、第3混練物を得る第3混練工程;
をこの順で含むゴム組成物の製造方法により達成される。
(2)前記亜鉛華の量に対する前記ヒドラジド化合物の量の比が、0.005〜0.1である。
(b)第1混練物と亜鉛華を混練し、第2混練物を得る第2混練工程;及び
(c)第2混練物と加硫剤を混練し、第3混練物を得る第3混練工程;
をこの順で含む。
第1混練工程(a)、第2混練工程(b)及び第3混練工程(c)はこの順で行う必要がある。混練は、ロール、インターナルミキサー、バンバリーミキサー等の混練機を用いて行うことができる。
・第1混練
温度:130℃、混練時間:1.5分、回転数:40rpm
・第2混練
温度:130℃、混練時間:1分、回転数:40rpm
・第3混練
温度:110℃、混練時間:1分、回転数:30rpm
・天然ゴム(RSS#4)
・カーボンブラック(旭カーボン製「旭#65」、FEF)
・ヒドラジド化合物(大塚化学株式会社製「IDH−S」、イソフタル酸ジヒドラジド)
・亜鉛華(ハクスイテック製「3号亜鉛華」)
・加硫剤:硫黄(鶴見化学製「粉末硫黄」)
・加硫促進剤(大内新興化学工業(株)製「ノクセラーD」、1,3−ジフェニルグアニジン)
上記作製した防振ゴムの評価体について以下の評価試験を行った。
静バネ定数(Ks)及び動バネ定数(Kd)をJIS K 6385に準拠して測定し、動倍率(Kd/Ks)を算出した。亜鉛華とヒドラジド化合物を同時に投入して混練した比較例1の動倍率の値を100としてインデックス表示で示した。
(2)tanδ
JIS K 6385に準拠して測定した(周波数15Hz、歪0.2%)。比較例1のtanδの値を100としてインデックス表示で示した。
ヒドラジド化合物と亜鉛華を第1混練工程と第2混練工程において別々に混練した場合(実施例1〜8)においては、動倍率及びtanδの低下が認められた。第2混練工程においてヒドラジド化合物と亜鉛華を同時に混練した場合(比較例1、3及び4)には動倍率及びtanδが高いことが認められた。ヒドラジド化合物を添加しなかった場合(比較例2)にはtanδが極めて高いことが認められた。
Claims (4)
- 以下の工程:
(a)ゴム成分、ヒドラジド化合物及び充填剤を混練し、第1混練物を得る第1混練工程;
(b)第1混練物と亜鉛華を混練し、第2混練物を得る第2混練工程;及び
(c)第2混練物と加硫剤を混練し、第3混練物を得る第3混練工程;
をこの順で含むゴム組成物の製造方法。 - 前記ヒドラジド化合物を、前記ゴム成分100質量部に対して0.1〜3質量部の量で添加して混練し、
前記亜鉛華を、前記ゴム成分100質量部に対して1〜20質量部の量で添加して混練することを特徴とする請求項1に記載の製造方法。 - 前記亜鉛華の量に対する前記ヒドラジド化合物の量の比が、0.005〜0.1であることを特徴とする請求項1又は2に記載の製造方法。
- 請求項1〜3の何れか1項に記載の製造方法により製造されたゴム組成物を用いてなる防振ゴム。
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JP2002097307A (ja) * | 2000-09-22 | 2002-04-02 | Toyo Tire & Rubber Co Ltd | 自動車用ゴムブッシュ |
JP2006193621A (ja) * | 2005-01-13 | 2006-07-27 | Toyo Tire & Rubber Co Ltd | 防振ゴム組成物及び防振ゴム |
JP2006218752A (ja) * | 2005-02-10 | 2006-08-24 | Sumitomo Rubber Ind Ltd | 印刷用ブランケット |
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WO2021132496A1 (ja) * | 2019-12-27 | 2021-07-01 | 横浜ゴム株式会社 | ゴム組成物、その製造方法および建設車両用タイヤ |
CN114521202A (zh) * | 2019-12-27 | 2022-05-20 | 横滨橡胶株式会社 | 橡胶组合物、其制造方法和工程车辆用轮胎 |
CN114521202B (zh) * | 2019-12-27 | 2024-01-26 | 横滨橡胶株式会社 | 橡胶组合物、其制造方法和工程车辆用轮胎 |
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