JP3533340B2 - Method for producing vulcanized powder rubber - Google Patents
Method for producing vulcanized powder rubberInfo
- Publication number
- JP3533340B2 JP3533340B2 JP12420399A JP12420399A JP3533340B2 JP 3533340 B2 JP3533340 B2 JP 3533340B2 JP 12420399 A JP12420399 A JP 12420399A JP 12420399 A JP12420399 A JP 12420399A JP 3533340 B2 JP3533340 B2 JP 3533340B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- mixer
- kneading
- kneaded
- producing
- 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.)
- Expired - Fee Related
Links
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- Processes Of Treating Macromolecular Substances (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、加硫粉末ゴムの
製造方法に関するものである。TECHNICAL FIELD The present invention relates to a method for producing a vulcanized powder rubber.
【０００２】[0002]
【従来の技術】現在使用されている加硫粉末ゴムは、加
硫ゴムや廃ゴム製品をクラッシャーロールで粉砕して製
造している。2. Description of the Related Art Vulcanized powder rubber currently in use is manufactured by crushing vulcanized rubber and waste rubber products with a crusher roll.
【０００３】このほか、加硫ゴムを液体炭酸ガスや液体
窒素を用いて結晶化してから粉砕して造っている。In addition, vulcanized rubber is produced by crystallizing it with liquid carbon dioxide or liquid nitrogen and then pulverizing it.
【０００４】[0004]
【発明が解決しようとする課題】しかし、前者の場合、
加硫ゴムや廃ゴム製品の引張り強さと伸びが大きいと、
クラッシャーロールに過大な負荷がかかり、粉砕が困難
である。結晶性のあるものは、特に困難である。However, in the case of the former,
When the tensile strength and elongation of vulcanized rubber and waste rubber products are large,
The crusher roll is overloaded and difficult to grind. Those with crystallinity are particularly difficult.
【０００５】後者の場合は、加硫ゴムの結晶化に長時間
を要し、かつ高価な冷媒を使用するので、コストがかか
る。冷媒を使用するので、危険を伴う。In the latter case, it takes a long time to crystallize the vulcanized rubber, and an expensive refrigerant is used, resulting in a high cost. Since it uses a refrigerant, it is dangerous.
【０００６】この発明は、このような従来の問題点に着
目してなされたもので、混練り機で製造することができ
る加硫粉末ゴムの製造方法を提供することを目的とす
る。The present invention has been made in view of such conventional problems, and an object thereof is to provide a method for producing a vulcanized powder rubber which can be produced by a kneader.
【０００７】[0007]
【課題を解決するための手段】この発明が提供する加硫
粉末ゴムの製造方法は、加硫後に架橋ゴムとなる配合ゴ
ム組成物を、加熱しながら混練りし、その混練り物を架
橋進行中に粉砕することを特徴とする方法である。The method for producing a vulcanized powder rubber provided by the present invention is to knead a compounded rubber composition which becomes a crosslinked rubber after vulcanization while heating, and to crosslink the kneaded product during the progress of crosslinking. It is a method characterized by crushing into.
【０００８】上記配合ゴム組成物としては、原料ゴムと
伸展油と加硫剤と加硫促進剤を主成分とするもの、ある
いは、原料ゴムと加硫剤と加硫促進剤を主成分とするも
のを使用することができる。The compounded rubber composition contains the raw material rubber, the extender oil, the vulcanizing agent and the vulcanization accelerator as the main components, or the raw material rubber, the vulcanizing agent and the vulcanization accelerator as the main components. Things can be used.
【０００９】上記加熱の温度は、７０℃〜１４０℃の範
囲が望ましい。The heating temperature is preferably in the range of 70 ° C to 140 ° C.
【００１０】原料ゴムとしては、ＮＲ，ＳＢＲ，ＩＲ，
ＮＢＲ，ＥＰＤＭ，ＣＲ，ＩＩＲ，ＢＲ，Ｕ，Ｑ，ＦＫ
Ｍ，ＣＳＭ，ＣＭ，ＡＣＭ，ＡＮＭ，Ｃｏ，ＥＣｏ，
Ｔ，ＮＳＸ（ポリノルボーネンゴム）（日本ゴム協会の
分類に準ずる。）挙げることができる。Raw rubbers include NR, SBR, IR,
NBR, EPDM, CR, IIR, BR, U, Q, FK
M, CSM, CM, ACM, ANM, Co, ECo,
T, NSX (polynorbornene rubber) (according to the classification of Japan Rubber Association) can be mentioned.
【００１１】伸展油としては、パラフィン系油、ナフテ
ン系油、アロマテック系油、可塑剤（ＤＯＡ）等を使用
することができる。As the extender oil, paraffin oil, naphthene oil, aromatic oil, plasticizer (DOA) and the like can be used.
【００１２】加硫剤としては、酸化亜鉛、ステアリン
酸、バルノックＲ，硫黄等を使用することができる。As the vulcanizing agent, zinc oxide, stearic acid, Barnock R, sulfur or the like can be used.
【００１３】加硫促進剤としては、ダイキャップ４０
Ｃ，ノクセラーＴＴ、ノクセラーＤＴ、ノクセラーＴＢ
Ｔ−Ｎ、ノクセラーＭ、アクセルＴＬ、アクセル２２等
を使用することができる。As the vulcanization accelerator, a die cap 40 is used.
C, Nox cellar TT, Nox cellar DT, Nox cellar TB
T-N, Nox cellar M, accelerator TL, accelerator 22 and the like can be used.
【００１４】このほか、充填剤として、重質炭酸カルシ
ウム、クレイ、シリカ等を使用することができる。In addition, heavy calcium carbonate, clay, silica and the like can be used as the filler.
【００１５】なお、上述したバルノックＲ、ダイキャッ
プ４０Ｃ，ノクセラーＴＴ、ノクセラーＴＢＴ−Ｎ、ノ
クセラーＤＴ、ノクセラーＭ、アクセル２２、アクセル
ＴＬは、いずれも製品名で、化学名は、表１のとおりで
ある。All of the above-mentioned Balnock R, die cap 40C, noxcellar TT, noxcellar TBT-N, noxceller DT, noxcellar M, accelerator 22 and accelerator TL are product names, and chemical names are as shown in Table 1. is there.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【作用】この発明においては、混練り物を、架橋進行中
で引張り強度がまだ小さいうちに、すなわち、架橋が完
了して引張り強度が大きくならないうちに、粉砕でき
る。このため、この発明の加硫粉末ゴムは、配合ゴム組
成物を混練り機で混練りすることによって製造すること
ができる。混練り機に過大な負荷がかかり、これが破損
するおそれがないからである。In the present invention, the kneaded product can be pulverized while the crosslinking is progressing and the tensile strength is still small, that is, before the crosslinking is completed and the tensile strength is not increased. Therefore, the vulcanized powder rubber of the present invention can be produced by kneading the compounded rubber composition with a kneader. This is because an excessive load is applied to the kneading machine and there is no possibility that it will be damaged.
【００１８】架橋進行中に粉砕された混練り物の粒子の
中での架橋は、その後、持続される加熱により進行して
完了する。The crosslinking in the particles of the kneaded material crushed during the progress of crosslinking is then progressed and completed by continued heating.
【００１９】架橋完了後の引張り強度が１００Ｋｇ・ｆ
／cm2 以上の加硫ゴムの場合は、配合ゴム組成物の中に
あらかじめ伸展油を添加して、架橋進行中の混練り物の
引張り強度を低下させるのが好ましい。引張り強度が１
００Ｋｇ・ｆ／cm2 未満の場合は、伸展油の添加は常に
必要としない。この場合は、混練り物の強度はさほど大
きくならないからである。Tensile strength after completion of crosslinking is 100 kg · f
In the case of a vulcanized rubber having a viscosity of 1 / cm 2 or more, it is preferable to add an extender oil to the compounded rubber composition in advance to reduce the tensile strength of the kneaded product during the progress of crosslinking. Tensile strength is 1
If it is less than 00 kg · f / cm 2 , addition of extender oil is not always necessary. This is because in this case, the strength of the kneaded product does not increase so much.
【００２０】[0020]
【発明の実施の形態】以下、この発明の実施の形態を実
施例によって説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to examples.
【００２１】（実施例１〜６）密閉式混練り機（バンバ
リーミキサー（以下、ミキサーという））の温度を８０
℃に保持しながら、表１の原料ゴムと伸展油をミキサー
に投入して混練りした。約６０秒の混練りで伸展油が原
料ゴムに吸収されたところで、両者の混練り物に表１の
加硫剤を添加し、約３分間混練りした。(Examples 1 to 6) The temperature of a closed kneading machine (Banbury mixer (hereinafter referred to as mixer)) was set to 80.
While maintaining the temperature at 0 ° C., the raw material rubber in Table 1 and the extending oil were put into a mixer and kneaded. When the extending oil was absorbed by the raw rubber after kneading for about 60 seconds, the vulcanizing agent shown in Table 1 was added to the kneaded product of both and kneaded for about 3 minutes.
【００２２】その後、ミキサー温度を１３０℃に上げ、
表１の加硫促進剤を添加し、混練りを続けて混練り物を
粉砕した。この混練りは、ミキサーのロータの回転トル
クが上昇し、一定になるまで続けた。Thereafter, the mixer temperature was raised to 130 ° C.,
The vulcanization accelerator shown in Table 1 was added and kneading was continued to pulverize the kneaded product. This kneading was continued until the rotational torque of the rotor of the mixer increased and became constant.
【００２３】この段階での混練り物の粒子の平均直径
は、約５mmであった。さらに混練りを続けて粉砕粒子の
平均直径が３mmとなったところで、粉砕を終了した。The average diameter of the kneaded material particles at this stage was about 5 mm. The kneading was further continued, and when the average diameter of the crushed particles became 3 mm, the crushing was terminated.
【００２４】粉砕粒子の架橋が完了したところで、同粒
子を要求するメッシュでスクリーニングし、なお、粗い
粉末粒子は要求する程度（直径３mm）になるまで粉砕し
た。When the cross-linking of the pulverized particles was completed, the pulverized particles were screened with a required mesh, and the coarse powder particles were pulverized to the required degree (diameter 3 mm).
【００２５】なお、ミキサーの温度は、原料ゴムを投入
するときから１３０℃以上に保持してもよい。このよう
にすると、伸展油を加えたとき急に温度が８０℃程度に
下がるから、ミキサーの温度を最初から８０℃程度に保
持することができ、作業時間を短縮する上で有利であ
る。The temperature of the mixer may be maintained at 130 ° C. or higher from the time of feeding the raw rubber. In this way, the temperature of the mixer suddenly drops to about 80 ° C. when the extender oil is added, so that the temperature of the mixer can be maintained at about 80 ° C. from the beginning, which is advantageous in shortening the working time.
【００２６】[0026]
【表２】 [Table 2]
【００２７】（実施例７〜９）密閉式混練り機（ニーダ
ーミキサー（以下、ミキサーという））の温度を１３０
℃に保持しながら表２の原料ゴムと伸展油と充填剤をミ
キサーに投入して混練りした。約３分の混練りで伸展油
が原料ゴムに吸収されたとこで、両者の混練り物に表２
の加硫剤を添加し、約３分混練りした。(Examples 7 to 9) The temperature of the closed type kneader (kneader mixer (hereinafter referred to as mixer)) was set to 130.
While maintaining the temperature at 0 ° C., the raw rubber, the extending oil and the filler shown in Table 2 were put into a mixer and kneaded. The extender oil was absorbed by the raw rubber after kneading for about 3 minutes.
The vulcanizing agent was added and kneaded for about 3 minutes.
【００２８】その後、表２の加硫促進剤を添加し混練り
を続けて混練り物を粉砕した。この混練りは、ミキサー
のロータの回転トルクが上昇し、一定になるまで続け
た。Then, the vulcanization accelerator shown in Table 2 was added and kneading was continued to pulverize the kneaded product. This kneading was continued until the rotational torque of the rotor of the mixer increased and became constant.
【００２９】この段階で、混練り物の粒子の平均粒径
は、約７mmであった。さらに混練りを継続して粉砕粒子
の平均直径が５mmとなったところで、粉砕を終了した。At this stage, the average particle size of the kneaded material particles was about 7 mm. Further, the kneading was continued, and when the average diameter of the crushed particles reached 5 mm, the crushing was terminated.
【００３０】粉砕粒子の架橋が完了したところで、同粒
子を要求するメッシュでスクリーニングし、なお、粗い
粉末粒子は要求する程度（直径５mm）になるまで粉砕し
た。When the cross-linking of the crushed particles was completed, the crushed particles were screened with a required mesh, and the coarse powder particles were crushed to a required degree (diameter 5 mm).
【００３１】[0031]
【表３】 [Table 3]
【００３２】（実施例１０〜１３）密閉式混練り機（ニ
ーダーミキサー（以下ミキサーという））の温度を１３
０℃に保持しながら、表４の原料ゴムをミキサーに投入
して混練りした。約３分混練りし、表４の充填剤及び加
硫剤を添加して３分間混練りした。その後、表４の加硫
促進剤を添加し、混練りを続けて混練り物を粉砕した。(Examples 10 to 13) The temperature of the closed kneading machine (kneader mixer (hereinafter referred to as mixer)) was set to 13
While maintaining the temperature at 0 ° C., the raw material rubbers in Table 4 were put into a mixer and kneaded. The mixture was kneaded for about 3 minutes, the filler and the vulcanizing agent shown in Table 4 were added, and the mixture was kneaded for 3 minutes. Then, the vulcanization accelerator shown in Table 4 was added and kneading was continued to pulverize the kneaded product.
【００３３】この混練りはミキサーの回転トルクが上昇
し、一定になるまで続けた。この段階で混練り物の粒子
の平均粒子径は９mmであった。さらに、混練りを継続し
て粉砕粒子の平均直径が５mmとなったところで、粉砕を
終了した。粉砕粒子の架橋が完了したところで、同粒子
を要求するメッシュでスクリーニングし、なお粗い粉末
粒子は要求する程度の直径５mmになるまで粉砕した。This kneading was continued until the rotational torque of the mixer increased and became constant. At this stage, the average particle diameter of the kneaded material was 9 mm. Further, the kneading was continued, and when the average diameter of the pulverized particles became 5 mm, the pulverization was terminated. When the cross-linking of the crushed particles was completed, the particles were screened with a required mesh, and the coarse powder particles were crushed to a required diameter of 5 mm.
【００３４】[0034]
【表４】 [Table 4]
【００３５】[0035]
【発明の効果】以上説明したように、この発明によれ
ば、上述のような構成としたので、１つの混練り機の中
で、配合ゴム組成物より所望の粒度の加硫ゴム粉末を短
時間かつ低コストで製造することができる。As described above, according to the present invention, since the constitution is as described above, the vulcanized rubber powder having a desired particle size is shorter than the compounded rubber composition in one kneading machine. It can be manufactured in time and at low cost.
Claims (3)
を、加熱しながら混練りし、その混練り物を架橋進行中
に粉砕することを特徴とする加硫粉末ゴムの製造方法。1. A method for producing a vulcanized powdered rubber, which comprises kneading a compounded rubber composition which becomes a crosslinked rubber after vulcanization while heating, and pulverizing the kneaded material while crosslinking is in progress.
油と加硫剤と加硫促進剤を主成分とするものである請求
項１記載の加硫粉末ゴムの製造方法。2. The method for producing a vulcanized powder rubber according to claim 1, wherein the compounded rubber composition contains a raw material rubber, an extender oil, a vulcanizing agent, and a vulcanization accelerator as main components.
剤と加硫促進剤を主成分とするものである請求項１記載
の加硫粉末ゴムの製造方法。3. The method for producing a vulcanized powder rubber according to claim 1, wherein the compounded rubber composition contains a raw material rubber, a vulcanizing agent, and a vulcanization accelerator as main components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12420399A JP3533340B2 (en) | 1999-04-30 | 1999-04-30 | Method for producing vulcanized powder rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12420399A JP3533340B2 (en) | 1999-04-30 | 1999-04-30 | Method for producing vulcanized powder rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000313703A JP2000313703A (en) | 2000-11-14 |
| JP3533340B2 true JP3533340B2 (en) | 2004-05-31 |
Family
ID=14879550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12420399A Expired - Fee Related JP3533340B2 (en) | 1999-04-30 | 1999-04-30 | Method for producing vulcanized powder rubber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3533340B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07223222A (en) * | 1994-02-15 | 1995-08-22 | Mitsubishi Heavy Ind Ltd | Fine cutting of feedstock rubber |
| JPH07314447A (en) * | 1994-05-19 | 1995-12-05 | Michiharu Fuji | Method for finely grinding vulcanized rubber |
-
1999
- 1999-04-30 JP JP12420399A patent/JP3533340B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000313703A (en) | 2000-11-14 |
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| R250 | Receipt of annual fees |
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