JPH03129147A - Transmission belt of thermoplastic elastomer - Google Patents
Transmission belt of thermoplastic elastomerInfo
- Publication number
- JPH03129147A JPH03129147A JP26718689A JP26718689A JPH03129147A JP H03129147 A JPH03129147 A JP H03129147A JP 26718689 A JP26718689 A JP 26718689A JP 26718689 A JP26718689 A JP 26718689A JP H03129147 A JPH03129147 A JP H03129147A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic elastomer
- liquid crystal
- transmission belt
- belt
- crystal polymer
- 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
- 229920002725 thermoplastic elastomer Polymers 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
- 229920000106 Liquid crystal polymer Polymers 0.000 claims abstract description 33
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims abstract description 33
- 229920001971 elastomer Polymers 0.000 claims abstract description 16
- 239000011342 resin composition Substances 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 abstract description 15
- 229920000728 polyester Polymers 0.000 abstract description 6
- 239000000806 elastomer Substances 0.000 abstract description 4
- 229920002647 polyamide Polymers 0.000 abstract description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 2
- 239000004814 polyurethane Substances 0.000 abstract description 2
- 239000004952 Polyamide Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003365 glass fiber Substances 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
- 238000004898 kneading Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、熱可塑性エラストマー組成物よりなる伝動ベ
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 power transmission belt made of a thermoplastic elastomer composition.
（従来の技術および背景）
従来より伝動ベルトは、天然ゴム、クロロブレンゴム等
の化学架橋型エラストマーにより製造されているが、こ
の場合、配合、混練、架橋という煩雑な作業工程を必要
とする。(Prior Art and Background) Transmission belts have heretofore been manufactured using chemically crosslinked elastomers such as natural rubber and chloroprene rubber, but in this case, complicated work processes such as compounding, kneading, and crosslinking are required.
一方、熱可塑性エラストマーはソフトセグメントとハー
ドセグメントとの両成分からなるもので、上記化学架橋
型エラストマーと異なり、ハードセグメントの結晶化ま
たはガラス状化により物理的架橋点が形成されるため、
通常の熱可塑性樹脂用成形機で迅速に成形加工できる長
所を有する。On the other hand, thermoplastic elastomers are composed of both soft segments and hard segments, and unlike the above-mentioned chemically crosslinked elastomers, physical crosslinking points are formed by crystallization or vitrification of the hard segments.
It has the advantage of being able to be quickly molded using a normal thermoplastic resin molding machine.
このような長所を有する熱可塑性エラストマーを伝動ベ
ルト、特にローエツジタイプＶベルト、Ｖリブベルト等
の摩擦伝動ベルトの圧縮ゴム層に用いた場合、熱可塑性
エラストマー単体では、「■弾性率が低いため耐側圧性
に劣る。When a thermoplastic elastomer with these advantages is used for the compressed rubber layer of a power transmission belt, especially a friction transmission belt such as a low-edge type V belt or a V-rib belt, the thermoplastic elastomer alone has a low Poor lateral pressure properties.
■耐摩耗性が劣るためベルト寿命が短い、■耐熱性が劣
るため摩擦熱により部分的に溶融する。■Poor wear resistance, resulting in short belt life; ■Poor heat resistance, causing partial melting due to frictional heat.
ｊ等の問題が生じる。Problems such as j occur.
これらの問題点を解決するものとして、従来より熱可塑
性エラストマー伝動ベルトの圧縮ゴム層にＷ、機フィラ
ーや炭素繊維を配合することが考えられている。As a solution to these problems, it has been considered to incorporate W, mechanical filler, or carbon fiber into the compressed rubber layer of a thermoplastic elastomer power transmission belt.
（発明が解決しようとする課題）
しかしながら、伝動ベルトの圧縮ゴム層はある程度の厚
みが必要であるため、無機フィラーや炭素繊維等を配合
したものでは、曲げ剛性が大きくなり、耐屈曲疲労性が
低下し、ベルト寿命が短くなるという新たな問題が生じ
る。(Problem to be solved by the invention) However, since the compressed rubber layer of a power transmission belt needs to have a certain thickness, those containing inorganic fillers, carbon fibers, etc. have high bending rigidity and poor bending fatigue resistance. A new problem arises in that the belt life is reduced and the belt life is shortened.
本発明は従来の技術の有するこのような問題点に鑑みて
なされたものであり、その目的は、耐摩耗性、耐熱性お
よび柔軟性を有する熱可塑性エラストマー伝動ベルトを
提供することにある。The present invention has been made in view of the above-mentioned problems of the prior art, and its object is to provide a thermoplastic elastomer power transmission belt that has wear resistance, heat resistance, and flexibility.
（課題を解決するための手段）
上記目的を達成するために本発明の要旨は、熱可塑性エ
ラストマーと液晶ポリマーとからなる樹脂組成物を圧縮
ゴム層として月いたことを特徴とする熱可塑性エラスト
マー伝動ベルトを第一の発明とし、
上記第一の発明において、液晶ポリマーの配向方向が伝
動ベルトの長手方向に対して直角方向であることを特徴
とする熱可塑性エラストマ本発明の熱可塑性エラストマ
ーとしては、特に限定されるものではないが、耐摩耗性
、強度特性に優れるポリエステル系熱可塑性エラストマ
ー、ポリアミド系熱可塑性エラストマー、ポリウレタン
系熱可塑性エラストマー等を挙げることができる。(Means for Solving the Problems) In order to achieve the above object, the gist of the present invention is to provide a thermoplastic elastomer transmission characterized in that a resin composition comprising a thermoplastic elastomer and a liquid crystal polymer is used as a compressed rubber layer. The first invention is a belt, and in the first invention, the thermoplastic elastomer is characterized in that the orientation direction of the liquid crystal polymer is perpendicular to the longitudinal direction of the transmission belt.The thermoplastic elastomer of the invention includes: Examples include, but are not limited to, polyester-based thermoplastic elastomers, polyamide-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, etc., which have excellent abrasion resistance and strength properties.
また、本発明において使用する液晶ポリマーとしては、
配合相手の熱可塑性エラストマーの加工温度に応じて適
宜選択すればよいが、例えば、出光石油化学■製の出光
ＬＣＰ、三菱化成ｆＳ製のツバキュレート、ユニチカ■
製のロッドランなどの中から任意に選択できる。In addition, the liquid crystal polymer used in the present invention includes:
It may be selected as appropriate depending on the processing temperature of the thermoplastic elastomer to be blended, but for example, Idemitsu LCP manufactured by Idemitsu Petrochemical ■, Tubacurate manufactured by Mitsubishi Kasei fS, Unitika ■
You can choose any one from among the manufactured rod runs.
そして、本発明において、熱可塑性エラストマー（ＴＰ
Ｅともいう）と液晶ポリマー（ＬＣＰともいう）との配
合比（重量比）としては、後記する理由により、ＴＰＥ
： ＬＣＰ＝９５〜５０：５〜５０が好ましい。In the present invention, thermoplastic elastomer (TP
The compounding ratio (weight ratio) of TPE (also referred to as E) and liquid crystal polymer (also referred to as LCP) is
: LCP=95-50: 5-50 is preferable.
また、本発明の熱可塑性エラストマー伝動ベルトの成形
方法としては、押出成形、射出成形等の一般の熱可塑性
樹脂と同様の方法によればよい。The thermoplastic elastomer power transmission belt of the present invention may be molded by a method similar to that used for general thermoplastic resins, such as extrusion molding or injection molding.
さらに、本発明の熱可塑性エラストマー伝動ベルトには
、アラミド繊維、ポリエステル繊維、ガラス繊維、アラ
ミドフィルム等の張力体を設けることもできる。Furthermore, the thermoplastic elastomer power transmission belt of the present invention may be provided with a tension member such as aramid fiber, polyester fiber, glass fiber, or aramid film.
（作用）
液晶ポリマーは剛直な分子が整然と並んでいる。そのた
め、粘度が低く流動性に冨むので精密な成形がしやすく
、その状態のまま紡糸すると分子が配向して結晶化する
ため、配向方向には高弾性率・高強度を示す、しかし、
配向方向に対して直角の方向には分子が絡みあっていな
いため強度が低い。(Function) Liquid crystal polymers have rigid molecules arranged in an orderly manner. Therefore, it has low viscosity and high fluidity, making it easy to form precisely, and when it is spun in that state, the molecules become oriented and crystallized, so it exhibits high elastic modulus and high strength in the orientation direction.
The strength is low because the molecules are not entangled in the direction perpendicular to the orientation direction.
上記特性を有する液晶ポリマーと熱可塑性エラストマー
は基本的には非相溶性であるが、これらを配合して一方
向に剪断力を加えて成形すると、剪断力方向に液晶ポリ
マーが配向し、この方向の引張強度および弾性率が高く
なる。−方、液晶ポリマーの配向方向に対して直角の方
向は、熱可塑性エラストマーのソフトセグメントの作用
により、曲げ剛性が小さく柔軟性を有する。Liquid crystal polymers and thermoplastic elastomers having the above characteristics are basically incompatible, but when they are blended and molded by applying shear force in one direction, the liquid crystal polymer is oriented in the direction of the shear force, and this direction The tensile strength and modulus of elasticity are increased. On the other hand, in the direction perpendicular to the orientation direction of the liquid crystal polymer, the bending rigidity is small and flexibility is achieved due to the action of the soft segment of the thermoplastic elastomer.
このような異方性材料を、液晶ポリマーの配向方向を伝
動ベルトの長平方向に対して直角方向とすることにより
、側圧方向が液晶ポリマーの配向方向に一致するので側
圧を受けても変形せず、優れた耐摩耗性ならびに耐熱性
を示す。By making such an anisotropic material so that the orientation direction of the liquid crystal polymer is perpendicular to the longitudinal direction of the transmission belt, the lateral pressure direction matches the orientation direction of the liquid crystal polymer, so it does not deform even when subjected to lateral pressure. , exhibits excellent wear resistance and heat resistance.
そして、ベルトの長手方向は液晶ポリマーの配向方向に
対して直角方向であるから、柔軟で優れた耐屈曲疲労性
を示す。Since the longitudinal direction of the belt is perpendicular to the orientation direction of the liquid crystal polymer, it exhibits flexibility and excellent bending fatigue resistance.
そして、熱可塑性エラストマーと液晶ポリマーとの配合
比として、液晶ポリマーが５重量％未満では、熱可塑性
エラストマーマトリックス中で液晶ポリマーが繊維状化
しにくいため高弾性率のものが得にくく、一方、熱可塑
性エラストマーが５０重景％未満では、液晶ポリマーの
配向方向に対して直角方向の曲げ剛性の上昇ならびに耐
屈曲疲労性の低下傾向が認められる。If the blending ratio of the thermoplastic elastomer and the liquid crystal polymer is less than 5% by weight, the liquid crystal polymer is difficult to form into fibers in the thermoplastic elastomer matrix, making it difficult to obtain a high modulus of elasticity. When the content of the elastomer is less than 50%, there is a tendency for the bending rigidity in the direction perpendicular to the orientation direction of the liquid crystal polymer to increase and the bending fatigue resistance to decrease.
（実施例）
以下に実施例を挙げて本発明を説明するが・本発明はこ
れら実施例により何等限定されるものではない。(Examples) The present invention will be described below with reference to Examples; however, the present invention is not limited in any way by these Examples.
１）実施例１
９頁の表１に示すようにポリエステル系熱可塑性エラス
トマー（東洋紡績株製ペルプレン）に所定量の液晶ポリ
マー（ユニチカ■製ロッドラン）を配合して混合した後
、射出成形により各種物性測定用試料を作製し、５％変
形時の圧縮応力（ＡＳＴＭ−Ｄ６９５）、曲げ弾性率（
ＡＳＴＭ−Ｄ７９０） 、熔融限界ＰＶ値および比摩耗
量（鉛末式スラスト摩擦試験法）を測定した。これらの
測定結果を表１に示す。なき、曲げ弾性率については、
４晶ポリマーの配向方向およびこれに対して直角方向に
ついて測定したが、他の物性は液晶ポリマーの配向方向
についてのみ測定した。1) Example 1 As shown in Table 1 on page 9, a predetermined amount of liquid crystal polymer (Rodlan, manufactured by Unitika ■) was blended and mixed with a polyester thermoplastic elastomer (Pelprene, manufactured by Toyobo Co., Ltd.), and then various types were formed by injection molding. A sample for measuring physical properties was prepared, and the compressive stress at 5% deformation (ASTM-D695) and flexural modulus (
ASTM-D790), melting limit PV value and specific wear amount (lead powder thrust friction test method) were measured. The results of these measurements are shown in Table 1. For the flexural modulus,
The orientation direction of the tetracrystalline polymer and the direction perpendicular thereto were measured, but other physical properties were measured only in the orientation direction of the liquid crystal polymer.
２）比較例１
表１に示すように実施例１と同じ熱可塑性エラストマー
に所定量の炭素短繊維を配合して混合したものと熱可塑
性エラストマー単体のものについて実施例１と同様に各
種物性測定用試料を作製し、物性測定に供した。この測
定結果を表１に示す。なお、曲げ弾性率については、射
出成形時の流動方向およびこれに対して直角方向につい
て測定したが、他の物性は流動方向についてのみ測定し
た。2) Comparative Example 1 As shown in Table 1, various physical properties were measured in the same manner as in Example 1 for a mixture of the same thermoplastic elastomer as in Example 1 with a predetermined amount of short carbon fibers and a single thermoplastic elastomer. A sample was prepared and subjected to physical property measurements. The measurement results are shown in Table 1. The flexural modulus was measured in the flow direction during injection molding and in a direction perpendicular to this, but other physical properties were measured only in the flow direction.
以下の表１において、樹脂組成物の配合を示す数字は重
量比を示す。In Table 1 below, the numbers indicating the formulations of the resin compositions indicate weight ratios.
表
■上記表１より、実施例（ａ） 、 （ｂ）ならびに比
較例（Ｃ） 、 （ｄ）は、液晶ポリマーの配向方向ま
たは射出成形時の流動方向の圧縮応力、曲げ弾性率、Ｐ
Ｖ値がすべて高く、一方、比摩耗量はかなり少なく、こ
の方向には高強度で耐熱性、耐摩耗性に優れていること
が分かる。Table ■ From Table 1 above, Examples (a), (b) and Comparative Examples (C), (d) have the following values: compressive stress in the orientation direction of the liquid crystal polymer or flow direction during injection molding, flexural modulus, P
All the V values are high, while the specific wear amount is quite small, indicating that the samples have high strength and excellent heat resistance and wear resistance in this direction.
しかし、比較例（ｃ） 、 （ｄ）は、流動方向に対し
て直角方向の曲げ弾性率も高く、柔軟性を欠く素材であ
ることが分かる。一方、実施例（ａ） 、 （ｂ）は、
配向方向に対して直角方向の曲げ弾性率がかなり低く、
優れた柔軟性を有していることがわかる。However, in Comparative Examples (c) and (d), the bending elastic modulus in the direction perpendicular to the flow direction is also high, indicating that the materials lack flexibility. On the other hand, Examples (a) and (b) are
The bending modulus in the direction perpendicular to the orientation direction is quite low.
It can be seen that it has excellent flexibility.
■表１の比較例（ｅ）は熱可塑性エラストマー単体から
なるので、圧縮応力、曲げ弾性率、ＰＶ値がすべて低く
、一方、比摩耗量はかなり多く、強度特性、耐熱性、耐
摩耗性のすべてにおいて劣っていることが分かる。■Comparative example (e) in Table 1 is made of a single thermoplastic elastomer, so its compressive stress, flexural modulus, and PV value are all low.On the other hand, the specific wear amount is quite high, and the strength characteristics, heat resistance, and abrasion resistance are low. It turns out that they are inferior in everything.
３）実施例２
表１の（ｂ）に示した樹脂組酸物を圧縮ゴム層として、
そして、接着処理を施したポリエステル繊維コードを張
力体として用い、液晶ポリマーの配向方向が伝動ベルト
の周長方向に対して直角方向になるように流路設計を行
った金型により、型温５０″Ｃ２樹脂温２４０°Ｃ１射
出圧力３００ｋｇ／ｃｍ”にて、第１図に示すような■
型ベルトを作製した。この■ベルトを、直径が２０閣で
回転数が５０００ｒｐｍの駆動プーリと直径が２０鴫の
従動プーリとの間に掛は渡して、２４時時間前させた。3) Example 2 The resin composition shown in (b) of Table 1 was used as a compressed rubber layer,
Then, using a polyester fiber cord subjected to adhesive treatment as a tension body, a mold with a flow path designed so that the orientation direction of the liquid crystal polymer is perpendicular to the circumferential direction of the power transmission belt is used. At "C2 resin temperature 240°C1 injection pressure 300kg/cm", ■ as shown in Figure 1.
A molded belt was made. This belt was passed between a driving pulley with a diameter of 20 mm and a rotation speed of 5000 rpm and a driven pulley with a diameter of 20 mm, and was allowed to rotate for 24 hours.
走行後のベルト摩耗減量およびベルト外観を次頁の表２
に示す。Table 2 on the next page shows belt wear loss and belt appearance after running.
Shown below.
第１図において、１は圧縮ゴム層、２は張力体である。In FIG. 1, 1 is a compressed rubber layer and 2 is a tension body.
４）比較例２
表１の（ｄ） 、 （ｅ）に示した樹脂組成物を圧縮ゴ
ム層として、そして、実施例２と同一のポリエステル繊
維コードを張力体として用い、実施例２と同一金型・同
−成形条件でＶ型ベルトを作製し、同一走行条件でベル
ト走行試験を行った。この走行後のベルト摩耗減量およ
びベルト外観を以下の表２に示す。4) Comparative Example 2 The resin compositions shown in (d) and (e) of Table 1 were used as the compressed rubber layer, and the same polyester fiber cord as in Example 2 was used as the tension body. A V-shaped belt was produced using the same mold and molding conditions, and a belt running test was conducted under the same running conditions. The belt wear loss and belt appearance after this running are shown in Table 2 below.
表
（備考）
１）比較例（ｅ）は走行開始後１時間でベルト底面が部
分溶融したため、テストを中止した。従って、比較例（
ｅ）の評価は走行１時間の結果である。Table (Notes) 1) In Comparative Example (e), the bottom surface of the belt partially melted 1 hour after the start of running, so the test was discontinued. Therefore, the comparative example (
Evaluation e) is the result of one hour of driving.
２）摩耗減量とは、走行前のベルト重量に対する走行後
のベルト重量の減量を示す。2) Wear loss refers to the reduction in belt weight after running relative to the belt weight before running.
３）ベルト背面、ベルト底面とは、それぞれ第１図にお
いて３．４で示す面をいう。3) The back surface of the belt and the bottom surface of the belt refer to the surfaces indicated by 3.4 in FIG. 1, respectively.
表２より、以下の点が明らかである。From Table 2, the following points are clear.
■樹脂組成物（ｂ）を用いた実施例に係るベルトは、周
長方向に曲げ剛性が小さく柔軟であるためベルト背面に
異常が生じず、ベルト周長方向に対して直角方向には液
晶ポリマーが配向して強化されているので、摩耗減量が
最も少なく優れた耐摩耗性を示すと共に、耐熱性も優れ
ているからベルト底面の部分溶融は生じなかった。■The belt according to the example using the resin composition (b) has low bending rigidity in the circumferential direction and is flexible, so no abnormality occurs on the back surface of the belt, and the belt has liquid crystal polymer in the direction perpendicular to the belt circumferential direction. Since the belt is oriented and reinforced, it exhibits excellent abrasion resistance with minimal wear loss, and also has excellent heat resistance, so no partial melting of the bottom surface of the belt occurred.
■樹脂組成物（ｄ）を用いた比較例に係るベルトは、曲
げ剛性が大きいため、ベルト背面に高応力が生じ、多数
のクランクが発生した。(2) Since the belt according to the comparative example using the resin composition (d) had high bending rigidity, high stress was generated on the back surface of the belt, and many cranks were generated.
■樹脂組成物（ｅ）を用いた比較例に係るベルトは熱可
塑性エラストマー単体からなるので、耐熱性・耐摩耗性
に劣り、走行開始後僅か１時間でベルト底面が摩擦熱に
より部分熔融し、走行テストが出来なかった。■Since the belt according to the comparative example using resin composition (e) is made of a single thermoplastic elastomer, it has poor heat resistance and abrasion resistance, and the bottom of the belt partially melts due to frictional heat in just one hour after starting running. I couldn't do a driving test.
（発明の効果）
１） 本発明に係る伝動ベルトは、熱可塑性エラストマ
ーと液晶ポリマーとからなる樹脂Ｍｉ底物を圧縮ゴム層
として用いているので、液晶ポリマーの配向方向には、
高強度・高弾性率を有すると共に、液晶ポリマーの配向
方向に対して直角方向には熱可塑性エラストマーのソフ
トセグメントの作用により、曲げ剛性が低く、柔軟であ
る。(Effects of the Invention) 1) Since the power transmission belt according to the present invention uses a resin Mi base material made of a thermoplastic elastomer and a liquid crystal polymer as a compressed rubber layer, the orientation direction of the liquid crystal polymer is
It has high strength and high elastic modulus, and is flexible with low bending rigidity due to the action of the soft segment of the thermoplastic elastomer in the direction perpendicular to the orientation direction of the liquid crystal polymer.
２） そして、液晶ポリマーの配向方向を伝動ベルトの
長手方向に対して直角方向とすることにより、液晶ポリ
マーの作用で側圧を受けても変形せず、優れた耐摩耗性
および耐熱性を示す、また、伝動ベルトの長手方向は液
晶ポリマーの配向方向に対して直角方向であるから、曲
げ剛性が低く、柔軟で耐屈曲疲労性に優れ、その結果ベ
ルト寿命が向上する。2) By making the alignment direction of the liquid crystal polymer perpendicular to the longitudinal direction of the transmission belt, it does not deform even when subjected to lateral pressure due to the action of the liquid crystal polymer, and exhibits excellent abrasion resistance and heat resistance. Further, since the longitudinal direction of the power transmission belt is perpendicular to the orientation direction of the liquid crystal polymer, the belt has low bending rigidity, flexibility, and excellent resistance to bending fatigue, resulting in an improved belt life.
【図面の簡単な説明】
第１図はＶ形ベルトの断面を示す斜視図、第２図は第１
図のＶ形ベルトの断面形状を示す図である。
■・・圧縮ゴム層、２・・張力体[Brief explanation of the drawings] Figure 1 is a perspective view showing a cross section of a V-shaped belt, and Figure 2 is a perspective view showing a cross section of a V-shaped belt.
It is a figure which shows the cross-sectional shape of the V-shaped belt of a figure. ■... Compressed rubber layer, 2... Tension body
Claims (1)
脂組成物を圧縮ゴム層として用いたことを特徴とする熱
可塑性エラストマー伝動ベルト ２）液晶ポリマーの配向方向が伝動ベルトの長手方向に
対して直角方向であることを特徴とする請求項１記載の
熱可塑性エラストマー伝動ベルト[Scope of Claims] 1) A thermoplastic elastomer power transmission belt characterized in that a resin composition comprising a thermoplastic elastomer and a liquid crystal polymer is used as a compressed rubber layer.2) The orientation direction of the liquid crystal polymer is the longitudinal direction of the power transmission belt. 2. The thermoplastic elastomer transmission belt according to claim 1, wherein the transmission belt is perpendicular to the thermoplastic elastomer power transmission belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26718689A JPH03129147A (en) | 1989-10-12 | 1989-10-12 | Transmission belt of thermoplastic elastomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26718689A JPH03129147A (en) | 1989-10-12 | 1989-10-12 | Transmission belt of thermoplastic elastomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03129147A true JPH03129147A (en) | 1991-06-03 |
Family
ID=17441310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26718689A Pending JPH03129147A (en) | 1989-10-12 | 1989-10-12 | Transmission belt of thermoplastic elastomer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03129147A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2861445A1 (en) * | 2003-10-24 | 2005-04-29 | Hutchinson | Power transmission belt for motor vehicle e.g. car, motorbike, has rounded ridges formed on V-ribs and having convex curvilinear profile with mean radius of curvature within range of 1-1.5 mm |
| AU2003207569B2 (en) * | 2002-01-16 | 2007-03-01 | The Gates Corporation | Multi-ribbed belt with tip profile |
| CN111040424A (en) * | 2019-12-11 | 2020-04-21 | 东莞市雄林新材料科技股份有限公司 | Transparency-controllable TPU (thermoplastic polyurethane) film and preparation method thereof |
-
1989
- 1989-10-12 JP JP26718689A patent/JPH03129147A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003207569B2 (en) * | 2002-01-16 | 2007-03-01 | The Gates Corporation | Multi-ribbed belt with tip profile |
| FR2861445A1 (en) * | 2003-10-24 | 2005-04-29 | Hutchinson | Power transmission belt for motor vehicle e.g. car, motorbike, has rounded ridges formed on V-ribs and having convex curvilinear profile with mean radius of curvature within range of 1-1.5 mm |
| EP1528284A1 (en) * | 2003-10-24 | 2005-05-04 | Hutchinson | Ribbed driving belt |
| WO2005047731A1 (en) * | 2003-10-24 | 2005-05-26 | Hutchinson | Ribbed power transmission belt |
| US8152666B2 (en) | 2003-10-24 | 2012-04-10 | Hutchinson | Ribbed power-transmission belt |
| CN111040424A (en) * | 2019-12-11 | 2020-04-21 | 东莞市雄林新材料科技股份有限公司 | Transparency-controllable TPU (thermoplastic polyurethane) film and preparation method thereof |
| CN111040424B (en) * | 2019-12-11 | 2022-04-19 | 东莞市雄林新材料科技股份有限公司 | Transparency-controllable TPU (thermoplastic polyurethane) film and preparation method thereof |
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