JPH0229461A - Production of proportionally pressure-sensitive conductive silicone rubber - Google Patents
Production of proportionally pressure-sensitive conductive silicone rubberInfo
- Publication number
- JPH0229461A JPH0229461A JP17802888A JP17802888A JPH0229461A JP H0229461 A JPH0229461 A JP H0229461A JP 17802888 A JP17802888 A JP 17802888A JP 17802888 A JP17802888 A JP 17802888A JP H0229461 A JPH0229461 A JP H0229461A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- silicone rubber
- sensitive conductive
- particles
- production
- 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
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 8
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims 2
- 229920001971 elastomer Polymers 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 17
- 239000005060 rubber Substances 0.000 claims abstract description 16
- 229920000642 polymer Polymers 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 238000007259 addition reaction Methods 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 abstract 1
- 239000002923 metal particle Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000005507 spraying 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、圧力センサーが用いられている分野、例えば
工作機械、測定器、ロボット、電機、自動車等に用いら
れるものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is applicable to fields where pressure sensors are used, such as machine tools, measuring instruments, robots, electrical machinery, automobiles, and the like.
［従来の技術］
通常の感圧導電ゴムにおいては、一定圧力により抵抗値
が急激に変化することを利用したタッチセンサーとして
用いられることか多い。ここで、広い圧力範囲で抵抗値
の変化を示す比例式感圧導電ゴムとするには、特殊な導
電粒子を用いる必要がある。例えば、球型に近い銀粒子
表面に凹凸のある表面積の大きい金属粒子、半導体膜で
覆われた金属粒子、シラン系カップリング剤で処理され
た金属粒子、チタネート系カップリング剤で処理された
金属粒子、球形のグラファイト、グラフアイＩ−とカー
ボンブラックの混合、金属粒子とグラファイトとの混合
したものなどが公知である。[Prior Art] Ordinary pressure-sensitive conductive rubber is often used as a touch sensor that takes advantage of the fact that its resistance value changes rapidly with a constant pressure. Here, in order to create a proportional pressure-sensitive conductive rubber that exhibits a change in resistance over a wide pressure range, it is necessary to use special conductive particles. For example, nearly spherical silver particles, metal particles with a large surface area and uneven surfaces, metal particles covered with a semiconductor film, metal particles treated with a silane coupling agent, metal particles treated with a titanate coupling agent. Particles, spherical graphite, a mixture of Grapheye I and carbon black, a mixture of metal particles and graphite, etc. are known.
またポリマーには、シリコンゴムを用いることか多く、
特に過酸化物架橋が一般的である。In addition, silicone rubber is often used as the polymer.
Peroxide crosslinking is particularly common.
［発明が解決しようとする問題点］
従来の圧力センサーと同等の用途とするには、通常の感
圧導電ゴムでは圧力範囲か狭いので、比例式感圧導電ゴ
ムを使用しセンサー機能を拡大しているが、種々の問題
を残しているのか現状である。すなわち、ゴムの経時的
な抵抗値変化、繰り返し圧力による再現性の悪さ、比例
曲線のロット間によるバラツキ、応答速度の遅さ、而（
人件の悪さなどである。これらを解決する為に表面処理
を行うことらあるが、均一な処理を行うには相当な設備
を必要とするとともに処理ロット間のバラツキも考慮す
る必要があり、結果として高価で不安定な製品となって
しまう。[Problems to be solved by the invention] In order to achieve the same application as conventional pressure sensors, since the pressure range of ordinary pressure-sensitive conductive rubber is narrow, it is necessary to use proportional pressure-sensitive conductive rubber to expand the sensor function. However, the current situation is that various problems remain. In other words, changes in the resistance value of the rubber over time, poor reproducibility due to repeated pressure, variations in proportional curves between lots, slow response speed, and (
This is due to poor personnel management, etc. Surface treatment is sometimes performed to solve these problems, but it requires considerable equipment to perform uniform treatment, and it is also necessary to consider variations between processing lots, resulting in expensive and unstable products. It becomes.
［問題点を解決する為の手段１
これらの問題点は、粒子とポリマー間に化学的作用が無
いか、あるいは少ない為に生じる場合と、導電粒子の酸
化や圧力による破壊等に起用するものと考えられる。[Measures for solving the problems 1] These problems occur because there is no or little chemical interaction between the particles and the polymer, and when the conductive particles are destroyed due to oxidation or pressure. Conceivable.
本発明は、＾ｌｘ Ｓ ｉ ｙなる合金を表面処理する
ことなく、シリコンポリマーに分散させ感圧導電ゴムを
得るものである。In the present invention, a pressure-sensitive conductive rubber is obtained by dispersing an alloy called ^lx Si y in a silicone polymer without surface treatment.
アルミ粒子は酸化皮膜を形成しやすく、有機物に配合し
ても導電性が得られないことは知られているが、アルミ
にケイ素を５〜５０％添加した合金とすることで、酸化
皮膜の絶縁性を少なくできることがわかった。ここで、
同一粒子形状を等量配合しても、その抵抗値はケイ素の
含有量により変化し、ケイ素の含有量が多い程抵抗値が
低くなる傾向があるので、これを利用して任意の圧カー
抵抗関係を得ることが可能である。It is known that aluminum particles tend to form an oxide film and that conductivity cannot be obtained even when mixed with organic materials. It turns out that it is possible to reduce the amount of sex. here,
Even if equal amounts of the same particle shape are mixed, the resistance value changes depending on the silicon content, and the higher the silicon content, the lower the resistance value, so this can be used to create any pressure car resistance. It is possible to obtain a relationship.
さらに、合金中のケイ素化合物によりシリコンゴムと粒
子間に、以下に示す付加反応が生じるので安定した組成
物を得ることができる。Furthermore, since the silicon compound in the alloy causes the following addition reaction between the silicone rubber and the particles, a stable composition can be obtained.
＋５ｉ−ｏ＋ｎ
また、圧カー抵抗の比例性を向上させる為には、粒子径
１００ＪＬｎ以下の球状粉末が良く、これは噴霧法によ
り工業的に製造することが容易であるとともに、その化
学的性質は安定である。+5i-o+n Also, in order to improve the proportionality of the pressure car resistance, spherical powder with a particle size of 100 JLn or less is good, and this is easy to industrially produce by the spraying method, and its chemical properties are It is stable.
以上のことにより、球形のＡｌＸ５ｉｙ合金粒子をシリ
コンゴム中に分散させ、付加反応にて架橋することによ
り、粒子が固定された安定なゴム材を得ることができる
。As described above, a stable rubber material with fixed particles can be obtained by dispersing spherical AlX5iy alloy particles in silicone rubber and crosslinking them by an addition reaction.
［実施例１
触媒を含有したシリコンポリマー重量比１００に対して
１０の架橋剤を加えたものをペースポリマーとする。こ
れに重量比２００のケイ素比４０％の八ｌ Ｓｉ球状粒
子５０μｍ径を添加して、ゴムロールにより混練したゴ
ム材を１７０°Ｃ１５分の加硫条件にて、０．５開のゴ
ム板を成形し、その感圧特性を調査したところ、比例性
、再現性に優れた感圧導電ゴムを得た。その感圧特性を
第１図のグラフに示す。［発明の効果］
以上の様に、従来の感圧導電ゴムに比べ、同等又はそれ
以上の特性を示す成形品を、工業的に容易に製造できる
為その産業上の効果は大きなものがある。[Example 1] A paste polymer is prepared by adding 10 parts of a crosslinking agent to 100 parts by weight of a silicone polymer containing a catalyst. To this, 8L Si spherical particles with a weight ratio of 200 and a silicon ratio of 40% and a diameter of 50 μm were added, and the rubber material was kneaded with a rubber roll and then vulcanized at 170°C for 15 minutes to form a 0.5-open rubber plate. When we investigated its pressure-sensitive properties, we obtained a pressure-sensitive conductive rubber with excellent proportionality and reproducibility. The pressure sensitive characteristics are shown in the graph of FIG. [Effects of the Invention] As described above, compared to conventional pressure-sensitive conductive rubbers, it is possible to industrially easily produce molded products that exhibit properties equal to or better than those of conventional pressure-sensitive conductive rubber, and therefore the industrial effects thereof are significant.
第１図は、本発明の比例式感圧導電ゴムの圧力−抵抗特
性を示すグラフである。
特許出願人 富 士 ゴ ム 株式会社代理人 弁
理士 松 １） 省 躬圧
力
（（］／榔）FIG. 1 is a graph showing the pressure-resistance characteristics of the proportional pressure-sensitive conductive rubber of the present invention. Patent applicant Fuji Rubber Co., Ltd. Agent Patent attorney Matsu 1) Ministerial pressure (() / Sake)
Claims (1)
により得られる感圧導電ゴムにおいて、導電粒子が１０
０μｍ以下の球状としたＡｌｘＳｉｙからなる合金であ
り、そしてシリコンポリマーが付加反応架橋タイプであ
ることを特徴とする抵抗−圧力の比例関係を示す感圧導
電シリコンゴムの製造法。In the pressure-sensitive conductive rubber obtained by mixing conductive particles with an insulating silicone rubber polymer, the conductive particles are 10
A method for producing a pressure-sensitive conductive silicone rubber exhibiting a proportional relationship between resistance and pressure, which is an alloy made of AlxSiy in a spherical shape of 0 μm or less, and the silicone polymer is of an addition reaction crosslinking type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17802888A JPH0229461A (en) | 1988-07-19 | 1988-07-19 | Production of proportionally pressure-sensitive conductive silicone rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17802888A JPH0229461A (en) | 1988-07-19 | 1988-07-19 | Production of proportionally pressure-sensitive conductive silicone rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0229461A true JPH0229461A (en) | 1990-01-31 |
Family
ID=16041325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17802888A Pending JPH0229461A (en) | 1988-07-19 | 1988-07-19 | Production of proportionally pressure-sensitive conductive silicone rubber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0229461A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62176727A (en) * | 1986-01-30 | 1987-08-03 | Matsuura Tekkosho:Kk | Workpiece delivery device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56100849A (en) * | 1980-01-04 | 1981-08-13 | Ford Motor Co | Precursor composition of heat conductive elastomer |
| JPS5998164A (en) * | 1982-11-26 | 1984-06-06 | Toshiba Silicone Co Ltd | Pressure-sensitive electrically conductive silicone rubber composition |
-
1988
- 1988-07-19 JP JP17802888A patent/JPH0229461A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56100849A (en) * | 1980-01-04 | 1981-08-13 | Ford Motor Co | Precursor composition of heat conductive elastomer |
| JPS5998164A (en) * | 1982-11-26 | 1984-06-06 | Toshiba Silicone Co Ltd | Pressure-sensitive electrically conductive silicone rubber composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62176727A (en) * | 1986-01-30 | 1987-08-03 | Matsuura Tekkosho:Kk | Workpiece delivery device |
| JPH0229461B2 (en) * | 1986-01-30 | 1990-06-29 | Matsura Tetsukosho Kk |
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