JPH04348930A - Surface finishing method of short fiber-containing rubber structure - Google Patents
Surface finishing method of short fiber-containing rubber structureInfo
- Publication number
- JPH04348930A JPH04348930A JP3011928A JP1192891A JPH04348930A JP H04348930 A JPH04348930 A JP H04348930A JP 3011928 A JP3011928 A JP 3011928A JP 1192891 A JP1192891 A JP 1192891A JP H04348930 A JPH04348930 A JP H04348930A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- short fibers
- short
- rubber structure
- fibers
- 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
- 239000000835 fiber Substances 0.000 title claims abstract description 76
- 229920001971 elastomer Polymers 0.000 title claims abstract description 52
- 239000005060 rubber Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims description 9
- 238000005498 polishing Methods 0.000 claims abstract description 24
- 238000004073 vulcanization Methods 0.000 claims abstract description 8
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 7
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 6
- 239000010432 diamond Substances 0.000 claims abstract description 6
- 238000004381 surface treatment Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- -1 tackifiers Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000002357 guanidines Chemical class 0.000 description 1
- 229920005555 halobutyl Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、主として床材、靴底材
、トルクリミッタ−、ブレ−キ材などの摺動材、キャタ
ピラカバ−、タイヤカバ−、フォ−クリフト爪カバ−、
伝動ベルト、ワイパ−等に用いられる短繊維含有ゴム構
造物の表面加工方法に関する。[Industrial Application Field] The present invention is mainly applicable to floor materials, shoe sole materials, sliding materials such as torque limiters, brake materials, caterpillar covers, tire covers, forklift claw covers,
The present invention relates to a surface treatment method for short fiber-containing rubber structures used in power transmission belts, wipers, etc.
【０００２】0002
【従来の技術】一般に、ゴムに短繊維を混入することに
より、ゴム単体で得られない高強度の短繊維含有ゴム構
造物を得ることができることは知られており、また、そ
のような短繊維含有ゴム構造物の表面を、例えばグライ
ンダ−により研磨することにより表面（研磨面）に風合
を出すということが行われている。[Prior Art] It is generally known that by mixing short fibers into rubber, it is possible to obtain a rubber structure containing short fibers with high strength that cannot be obtained with rubber alone. The surface of a rubber-containing structure is polished, for example, with a grinder to give the surface (polished surface) a texture.
【０００３】0003
【発明が解決しようとする課題】ところが、従来のグラ
インダ−による研磨方法では、研磨による摩擦熱で研磨
面の温度が、混入されている短繊維の軟化温度以上にな
り、表面（研磨面）の短繊維が軟化溶融して短繊維が変
形し、風合が出にくい。However, in the conventional polishing method using a grinder, the temperature of the polished surface becomes higher than the softening temperature of the short fibers mixed in due to the frictional heat generated by polishing, and the surface (polished surface) becomes soft. The short fibers soften and melt, deforming the short fibers and making it difficult to create texture.
【０００４】本発明はかかる点に鑑みてなされたもので
、短繊維含有ゴム構造物の研磨面の温度を制御すること
により、研磨時に短繊維を溶融させない短繊維含有ゴム
右造物の表面加工方法を提供することを目的とする。The present invention has been made in view of the above, and provides a method for surface processing a rubber structure containing short fibers in which the short fibers are not melted during polishing by controlling the temperature of the polished surface of the rubber structure containing short fibers. The purpose is to provide
【０００５】[0005]
【課題を解決するための手段】本発明は、熱可塑性を有
する短繊維を含有し、該短繊維含有量が２〜３０容量％
である短繊維含有ゴム構造物の表面加工方法を前提とし
、加硫後のゴム表面の全部又は一部を、弾性率の高い短
繊維を残してゴムを削りとるためにダイヤモンド砥粒等
の砥石を用いて、研磨時の研磨面を強制的に冷却させ該
研磨面の表面温度を繊維の軟化温度以下としつつ、相対
速度差５００〜１０００ｍ／ｍｉｎ でもって研磨する
構成とする。[Means for Solving the Problems] The present invention contains short fibers having thermoplasticity, and the short fiber content is 2 to 30% by volume.
Based on the surface processing method of a rubber structure containing short fibers, a grindstone such as a diamond abrasive is used to scrape off all or part of the rubber surface after vulcanization, leaving short fibers with a high modulus of elasticity. is used to forcibly cool the polished surface during polishing so that the surface temperature of the polished surface is equal to or lower than the softening temperature of the fibers, while polishing is performed at a relative speed difference of 500 to 1000 m/min.
【０００６】[0006]
【作用】研磨時の研磨面を冷却して該研磨面の表面温度
を繊維の軟化温度以下としつつ、研磨されるので、研磨
面付近の短繊維は軟化したり、溶融しない。[Operation] Since polishing is performed while cooling the polishing surface so that the surface temperature of the polishing surface is below the softening temperature of the fibers, short fibers near the polishing surface do not soften or melt.
【０００７】[0007]
【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。Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
【０００８】本発明に係る短繊維含有ゴム構造物は、熱
可塑性を有する短繊維を含有しており、該短繊維の含有
量が２〜３０容量％である短繊維含有ゴム構造物である
。The short fiber-containing rubber structure according to the present invention contains thermoplastic short fibers, and the short fiber content is 2 to 30% by volume.
【０００９】短繊維含有ゴム構造物の原料ゴムは、天然
ゴム、スチレンブタジエンゴム、エチレンプロピレンゴ
ム、ブチルゴム、アクリルニトリルブタジエンゴム、シ
リコンゴム、ウレタンゴム、弗素ゴム、ハロゲン化ブチ
ルゴム、水素化ニトリルゴムなどの架橋ゴム、及びポリ
オレフィン系、ポリエステル系、ポリエ−テル系、ポリ
アミド系、ポリウレタン系などの熱可塑性エラストマ−
等から適宜選択する。また、カ−ボンブラック等の補強
剤、やシリカ、タルク、クレイ等の無機充填剤も任意に
選択し得る。Raw material rubber for short fiber-containing rubber structures includes natural rubber, styrene-butadiene rubber, ethylene propylene rubber, butyl rubber, acrylonitrile-butadiene rubber, silicone rubber, urethane rubber, fluorine rubber, halogenated butyl rubber, hydrogenated nitrile rubber, etc. crosslinked rubber, and thermoplastic elastomers such as polyolefin, polyester, polyether, polyamide, and polyurethane.
Select as appropriate from etc. Further, reinforcing agents such as carbon black, and inorganic fillers such as silica, talc, and clay may also be arbitrarily selected.
【００１０】さらに、上記ゴム組成物には必要に応じて
ゴム伸展油、ゴム用薬品、ゴム添加剤が配合される。ゴ
ム伸展油としては、アロマチック系、ナフテン系、パラ
フィン系等から適宜選択する。ゴム用薬品、ゴム用添加
剤としては、硫黄、パ−オキサイド等の加硫剤、亜鉛華
、ステアリン酸などの加硫促進助剤、スルフェンアミド
系、チウラム系、チアゾ−ル系、グアニジン系などの加
硫促進剤、アミン系、フェノ−ル系、硫黄系、リン系な
どの老化防止剤又は酸性防止剤、紫外線吸収剤、オゾン
劣化防止剤、粘着付与剤、可塑剤などが使用目的に応じ
て使用される。[0010] Furthermore, a rubber extender oil, a rubber chemical, and a rubber additive are blended into the rubber composition as required. The rubber extension oil is appropriately selected from aromatic oils, naphthenic oils, paraffin oils, and the like. Rubber chemicals and rubber additives include vulcanizing agents such as sulfur and peroxide, vulcanization accelerators such as zinc white and stearic acid, sulfenamides, thiurams, thiazoles, and guanidines. Vulcanization accelerators such as amine-based, phenol-based, sulfur-based, phosphorus-based anti-aging agents or acidic inhibitors, ultraviolet absorbers, ozone deterioration inhibitors, tackifiers, plasticizers, etc. used accordingly.
【００１１】混入する短繊維は、繊維長さＬが０．５〜
１０ｍｍの範囲で、繊維長さＬと繊維径Ｄとのアスペク
ト比Ｌ／Ｄが２０以上の熱可塑性繊維を使用する。熱可
塑性繊維としては特に限定されないが、ビニロン、ポリ
エステル、ポリプロピレン、ナイロン６、ナイロン６６
、ポリエチレンテレフタレ−トなどから使用目的に応じ
て適宜選択される。短繊維の混入量は特に限定されない
が、加工性を確保する点からは３０容量％以下が望まし
く、短繊維混入の効果を得るために、少なくとも２％程
度は必要である。[0011] The short fibers to be mixed have a fiber length L of 0.5 to
Thermoplastic fibers with an aspect ratio L/D between fiber length L and fiber diameter D of 20 or more are used within a range of 10 mm. Thermoplastic fibers include, but are not limited to, vinylon, polyester, polypropylene, nylon 6, and nylon 66.
, polyethylene terephthalate, etc. depending on the purpose of use. The amount of short fibers mixed in is not particularly limited, but from the viewpoint of ensuring processability, it is desirable to be 30% by volume or less, and in order to obtain the effect of mixing short fibers, at least about 2% is necessary.
【００１２】上記短繊維含有ゴム構造物は、所定のゴム
配合に熱可塑性を有する所定の短繊維を混入分散して、
周知の如く、オ−ブンロ−ル又はインタ−ナルミキサ−
等で混練する。混練したゴム配合物を、目的に応じて、
カレンダ、インジェクション等の方法で加工し、加硫す
る。[0012] The above-mentioned short fiber-containing rubber structure is obtained by mixing and dispersing predetermined short fibers having thermoplasticity in a predetermined rubber compound.
As is well known, oven roll or internal mixer
Knead with etc. Depending on the purpose, the kneaded rubber compound is
Process and vulcanize using methods such as calendering and injection.
【００１３】加硫後、短繊維を露出させるゴム構造物の
表面を研磨する。この研磨する際に、研磨面を該研磨面
の表面温度が短繊維の軟化温度と同一又はそれ以下とな
るように強制的に冷却し、摩擦熱による短繊維の軟化、
溶融を防ぐ。冷却の方法は特に限定しないが、水、炭酸
ガス、液体窒素を研磨面に連続的又は断続的にかけて行
う。また、研磨は、加硫後のゴム表面の全部又は一部を
、弾性率の高い短繊維を残してゴムを削りとるために、
ダイヤモンド砥石等の砥石を用いて、相対速度差５００
〜１０００ｍ／ｍｉｎ でもって行う。なお、相対速度
差５００〜１０００ｍ／ｍｉｎ としているのは、５０
０ｍ／ｍｉｎ未満であれば、ゴム、繊維両者共削り取る
ことができず、１０００ｍ／ｍｉｎ を越えると両者と
も削り取ってしまうからである。After vulcanization, the surface of the rubber structure exposing the short fibers is polished. During this polishing, the polished surface is forcibly cooled so that the surface temperature of the polished surface is equal to or lower than the softening temperature of the short fibers, and the short fibers are softened by frictional heat.
Prevent melting. The cooling method is not particularly limited, but water, carbon dioxide, or liquid nitrogen is applied to the polishing surface continuously or intermittently. In addition, polishing is used to remove all or part of the rubber surface after vulcanization, leaving short fibers with high elastic modulus.
Using a grindstone such as a diamond grindstone, the relative speed difference is 500
Perform at ~1000m/min. Note that the relative speed difference of 500 to 1000 m/min is 50 m/min.
This is because if the speed is less than 0 m/min, both rubber and fibers cannot be scraped off, and if it exceeds 1000 m/min, both will be scraped off.
【００１４】以上のように、研磨面を冷却をしながら研
磨を行うと、図１に示すように、短繊維含有ゴム構造物
１の表面１ａから短繊維２が繊維形状を保持したまま突
出するか、あるいは図２に示すように、ゴム構造物１の
表面１ａから、先端部分３ａが丸くいわゆる団子状とな
った短繊維３が突出することとなり、風合性に優れる。
なお、上述したような冷却を行わずに表面の研磨を行う
と、図４に示すように、短繊維含有ゴム構造物１の表面
１ａより露出した短繊維１１が変形し、表面１ａ上で先
端部分１１ａが突出することなくいわゆる団子状となっ
てしまい外観上風合性に劣ることとなる。As described above, when polishing is performed while cooling the polished surface, the short fibers 2 protrude from the surface 1a of the short fiber-containing rubber structure 1 while maintaining their fiber shape, as shown in FIG. Alternatively, as shown in FIG. 2, short fibers 3 having rounded tip portions 3a protrude from the surface 1a of the rubber structure 1 in a so-called dumpling shape, resulting in excellent texture. Note that when the surface is polished without cooling as described above, the short fibers 11 exposed from the surface 1a of the short fiber-containing rubber structure 1 are deformed, and the tips of the short fibers 11 are formed on the surface 1a, as shown in FIG. The portion 11a does not protrude and becomes a so-called dumpling shape, resulting in poor texture in terms of appearance.
【００１５】続いて、研磨後の研磨面における短繊維の
状態を調べるために行った試験について説明する。なお
、研磨面の静止摩擦係数は４回測定の平均値である。Next, a test conducted to examine the state of short fibers on the polished surface after polishing will be explained. Note that the static friction coefficient of the polished surface is the average value of four measurements.
【００１６】
−試料−
ネオプレンＧＲＴ
１００ｐｈｒ カ−ボンブラック
４０ 酸化亜鉛
５ 酸化マグネシウム
４ ステアリン酸
１上記配合を、ＢＲ
型バンバリ−ミキサ−で常法で混練りしたゴム配合物に
、６ナイロン短繊維を約５，１３，２０，４０容量％混
入してオ−プンロ−ルで混練りしたが、４０容量％につ
いてはオ−プンロ−ルでの短繊維の混練りができなかっ
たので、それ以外について短繊維が長手方向に配向され
た短繊維含有シ−トを成形した。この短繊維含有シ−ト
を所定長さに切断して単位シ−ト材を形成し、図３に示
すように、単位シ−ト材５を、短繊維６が一方向に配向
されるようにして厚さが２５ｍｍ程度となるまで積層し
、積層したゴム構造物７を加圧プレスにて１６０℃で４
０分間加硫した。それから、加硫後、表面７ａ（面積２
５ｍｍ×２５ｍｍ）を、以下の３態様で研磨した。-Sample- Neoprene GRT
100phr carbon black
40 Zinc oxide
5 Magnesium oxide
4 Stearic acid
1 The above formulation, BR
Approximately 5, 13, 20, and 40% by volume of 6 nylon short fibers were mixed into a rubber compound kneaded in a conventional manner using a Banbury mixer and kneaded using an open roll. Since the short fibers could not be kneaded using an open roll, a short fiber-containing sheet in which the short fibers were oriented in the longitudinal direction was otherwise formed. This sheet containing short fibers is cut into a predetermined length to form a unit sheet material, and as shown in FIG. 3, the unit sheet material 5 is cut so that the short fibers are oriented in one direction. The laminated rubber structure 7 was laminated until the thickness was about 25 mm, and the laminated rubber structure 7 was heated at 160°C using a pressure press.
Vulcanized for 0 minutes. Then, after vulcanization, surface 7a (area 2
5 mm x 25 mm) was polished in the following three ways.
【００１７】−本発明例１−
研磨材とゴム構造物７との接触部分である表面７ａ（研
磨面）に対し、水温５〜８℃に調整した水を、１２０ｃ
ｃ／ｍｉｎの水量でもって連続的にかけ、表面７ａを強
制的に冷却する。-Example 1 of the present invention- Water adjusted to a water temperature of 5 to 8°C was heated at 120°C to the surface 7a (polishing surface) which is the contact area between the abrasive material and the rubber structure 7.
The surface 7a is forcibly cooled by continuously applying water at a rate of c/min.
【００１８】−本発明例２−
■まず、表面７ａの研磨を、表面７ａの冷却を行うこと
なく行う。-Example 2 of the present invention- (1) First, the surface 7a is polished without cooling the surface 7a.
【００１９】■続いて、研磨材とゴム構造物７との接触
部分である表面７ａに対し、水温５〜８℃に調整した水
を１２０ｃｃ／ｍｉｎの水量で連続的にかけ、研磨され
る表面７ａを強制的に冷却する。[0019] Subsequently, water adjusted to a temperature of 5 to 8°C is continuously applied at a rate of 120 cc/min to the surface 7a, which is the contact area between the abrasive material and the rubber structure 7, to polish the surface 7a. is forced to cool down.
【００２０】−比較例−
ゴム構造物７の表面７ａの研磨を、冷却することなく、
行う。-Comparative Example- The surface 7a of the rubber structure 7 was polished without cooling.
conduct.
【００２１】なお、研磨は．粒度＃１００のダイヤモン
ド砥粒を電着させた砥粒径φ２７５ｍｍのダイヤモンド
電着ホイ−ルを周速９００ｍ／ｍｉｎ で回転させて研
磨した。
なお、被研磨物は１０ｍ／ｍｉｎ の相対速度でもって
移動させた。[0021]The polishing is as follows. Polishing was carried out by rotating a diamond electrodeposited wheel with an abrasive grain diameter of 275 mm on which diamond abrasive grains of particle size #100 were electrodeposited at a circumferential speed of 900 m/min. Note that the object to be polished was moved at a relative speed of 10 m/min.
【００２２】上記本発明例１，２及び比較例の条件で研
磨したゴム構造物７の表面７ａにおいて、突出した短繊
維の形状を顕微鏡で短繊維１００本について観察したと
ころ、短繊維１００本の形状は次の表のように分類する
ことができた。なお、形状Ａ，Ｂ，Ｃはそれぞれ図４、
図１及び図２に示す形状である。On the surface 7a of the rubber structure 7 polished under the conditions of Invention Examples 1 and 2 and Comparative Example, the shape of the protruding short fibers was observed under a microscope, and it was found that 100 short fibers were The shapes could be classified as shown in the table below. Note that shapes A, B, and C are shown in Figure 4, respectively.
It has the shape shown in FIGS. 1 and 2.
【００２３】[0023]
【表１】[Table 1]
【００２４】比較例では研磨中に発生した摩擦熱により
ゴム構造物７の表面７ａの短繊維がほとんど溶融してい
る。これに対し、本発明例１，２では溶融せずに研磨面
（表面７ａ）上に突出している。また、同じ短繊維量の
、本発明例１，２及び比較例の研磨面を目視で観察した
ところ、明らかに比較例に比較して本発明例１，２の方
が短繊維が多いように見えた。In the comparative example, most of the short fibers on the surface 7a of the rubber structure 7 were melted due to the frictional heat generated during polishing. On the other hand, in Examples 1 and 2 of the present invention, the particles do not melt and protrude above the polished surface (surface 7a). Furthermore, when we visually observed the polished surfaces of Inventive Examples 1 and 2 and Comparative Example, which had the same amount of short fibers, it was clear that Inventive Examples 1 and 2 had more short fibers than the Comparative Example. Looked.
【００２５】[0025]
【発明の効果】本発明は、上記のように構成したから、
短繊維として熱可塑性を有するものを用いた場合、短繊
維を軟化、溶融させることなく、短繊維含有ゴム構造物
の表面を研磨することが可能となり、表面加工により風
合の優れた短繊維含有ゴム構造物を得ることができる。[Effects of the Invention] Since the present invention is configured as described above,
When thermoplastic short fibers are used, it is possible to polish the surface of a rubber structure containing short fibers without softening or melting the short fibers, and the surface treatment allows the short fibers to have an excellent texture. A rubber structure can be obtained.
【図１】研磨後の短繊維含有ゴム構造物の表面の性状を
示す拡大図である。FIG. 1 is an enlarged view showing the surface properties of a short fiber-containing rubber structure after polishing.
【図２】研磨後の短繊維含有ゴム構造物の表面の性状を
示す拡大図である。FIG. 2 is an enlarged view showing the surface properties of the short fiber-containing rubber structure after polishing.
【図３】試験方法の説明図である。FIG. 3 is an explanatory diagram of the test method.
【図４】従来方法による場合の研磨後の短繊維含有ゴム
構造物の表面の性状を示す拡大図である。FIG. 4 is an enlarged view showing the surface properties of a short fiber-containing rubber structure after polishing using a conventional method.
１ 短繊維含有ゴム構造物 １ａ 表面 ２，３ 短繊維 1 Rubber structure containing short fibers 1a Surface 2, 3 Short fiber
Claims (1)
短繊維含有量が２〜３０容量％である短繊維含有ゴム構
造物の表面加工方法であって、加硫後のゴム表面の全部
又は一部を、弾性率の高い短繊維を残してゴムを削りと
るためにダイヤモンド砥石等の砥石を用いて、研磨時の
研磨面を強制的に冷却させ該研磨面の表面温度を繊維の
軟化温度以下としつつ、相対速度差５００〜１０００ｍ
／ｍｉｎ でもって研磨することを特徴とする短繊維含
有ゴム構造物の表面加工方法。1. A method for surface treatment of a short fiber-containing rubber structure containing thermoplastic short fibers, the short fiber content of which is from 2 to 30% by volume, the method comprising: treating the entire surface of the rubber after vulcanization; Alternatively, in order to scrape off some of the rubber while leaving short fibers with high elastic modulus, a grindstone such as a diamond grindstone is used to forcibly cool the polished surface during polishing, and the surface temperature of the polished surface is lowered to soften the fibers. Relative speed difference of 500 to 1000 m while keeping the temperature below
A method for surface treatment of a short fiber-containing rubber structure, characterized by polishing the surface at a speed of /min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3011928A JPH04348930A (en) | 1991-02-01 | 1991-02-01 | Surface finishing method of short fiber-containing rubber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3011928A JPH04348930A (en) | 1991-02-01 | 1991-02-01 | Surface finishing method of short fiber-containing rubber structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04348930A true JPH04348930A (en) | 1992-12-03 |
Family
ID=11791339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3011928A Pending JPH04348930A (en) | 1991-02-01 | 1991-02-01 | Surface finishing method of short fiber-containing rubber structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04348930A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9039554B2 (en) | 2007-12-05 | 2015-05-26 | Gates Corporation | Power transmission belt |
-
1991
- 1991-02-01 JP JP3011928A patent/JPH04348930A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9039554B2 (en) | 2007-12-05 | 2015-05-26 | Gates Corporation | Power transmission belt |
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