JPH06256583A - Filler for rubber - Google Patents
Filler for rubberInfo
- Publication number
- JPH06256583A JPH06256583A JP4824493A JP4824493A JPH06256583A JP H06256583 A JPH06256583 A JP H06256583A JP 4824493 A JP4824493 A JP 4824493A JP 4824493 A JP4824493 A JP 4824493A JP H06256583 A JPH06256583 A JP H06256583A
- Authority
- JP
- Japan
- Prior art keywords
- calcium silicate
- filler
- rubber
- particle size
- silicate hydrate
- 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.)
- Withdrawn
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ゴムの充填剤に関す
る。FIELD OF THE INVENTION The present invention relates to a rubber filler.
【０００２】[0002]
【従来の技術】これまでゴムの充填剤としては炭酸カル
シウム、クレー類等の無機化合物が主流に使用されてい
る。2. Description of the Related Art Up to now, inorganic compounds such as calcium carbonate and clay have been mainly used as rubber fillers.
【０００３】[0003]
【発明が解決しようとする課題】しかし、炭酸カルシウ
ムをゴム充填剤として使用した場合、ゴム自体の強度発
現性が乏しく、また、クレー類を使用した場合、弱酸性
であるため加硫をやや遅らせる傾向がある。前記の欠点
を改善するために、グリコール、アミン等の活性剤を添
加しているが、それでも加硫特性面において改良の余地
がある。However, when calcium carbonate is used as a rubber filler, the rubber itself has a poor strength development, and when clay is used, it is slightly acidic and thus vulcanizes slightly. Tend. Although activators such as glycol and amine are added to improve the above-mentioned drawbacks, there is still room for improvement in vulcanization characteristics.
【０００４】本発明は充填剤添加後のゴム自体の強度
等、力学的物性を落とすことなく、加工時の加硫速度等
の加硫特性を向上させることのできる、非常に優れたゴ
ム充填剤を提供することにある。The present invention is a very excellent rubber filler capable of improving vulcanization characteristics such as vulcanization rate during processing without deteriorating mechanical properties such as strength of rubber itself after addition of the filler. To provide.
【０００５】[0005]
【課題を解決するための手段】本発明は、平均粒径５μ
ｍ以下の珪酸カルシウム水和物からなるゴムの充填剤で
ある。本発明の原料に適した珪酸カルシウム水和物は、
ゾノトライト、トバモライト、ジャイロライト、フォシ
ャジャイト、ヒレブランダイト等を用いることができ
る。これらの珪酸カルシウム水和物は、各々単独で用い
る必要性はなく、２種類以上の混合物で用いることが出
来る。また、これらの珪酸カルシウム水和物は、完全に
純粋なものでなくＣＳＨゲルや未反応の珪酸質原料等も
含まれていても良い。特に、未反応珪石が存在する場
合、強度向上の効果は大きいことも判明している。The present invention has an average particle size of 5 μm.
It is a rubber filler composed of calcium silicate hydrate of m or less. Calcium silicate hydrate suitable for the raw material of the present invention,
It is possible to use zonotolite, tobermorite, gyrolite, foshayite, hirebrandite, and the like. These calcium silicate hydrates need not be used alone, but can be used as a mixture of two or more kinds. Further, these calcium silicate hydrates may not be completely pure, and may include CSH gel, unreacted siliceous raw material, and the like. In particular, it has been found that the strength improving effect is great when unreacted silica is present.
【０００６】珪酸カルシウム水和物を得る方法として
は、例えば、珪酸質原料と石灰質原料を主体とし、これ
らをオートクレーブ中で水熱合成する方法等が挙げられ
る。また、珪酸カルシウム水和物の中で、軽量気泡コン
クリート、即ちＡＬＣと呼ばれ、建築材料として汎用さ
れている材料が入手しやすく、かつ、本発明の組成物と
しても好ましい。また、特に新品を使用する必要はな
く、ＡＬＣ製造工程で発生する不良品やビルや住宅など
の建設現状で発生する端材のような従来は廃棄処分され
ているようなものを使用することもできる。As a method for obtaining calcium silicate hydrate, for example, there is a method in which a siliceous raw material and a calcareous raw material are mainly used and these are hydrothermally synthesized in an autoclave. Further, among calcium silicate hydrates, a lightweight cellular concrete, that is, a material called ALC, which is widely used as a building material, is easily available, and is also preferable as the composition of the present invention. In addition, it is not necessary to use a new product, and it is also possible to use a defective product generated in the ALC manufacturing process, a scrap material generated in the current state of construction of a building, a house, or the like, which has been conventionally discarded. it can.
【０００７】この珪酸カルシウム水和物の平均粒径は、
５μｍ以下であれば特に制限はないが、好ましくは平均
粒径が１〜３μｍの珪酸カルシウム水和物を使用するの
が好ましい。ここでいう平均粒径とは、レーザー回折式
粒度分布測定装置により測定される粒度分布から算出さ
れるものをいう。平均粒径が５μｍを超える値である
と、充填時の分散が悪くなり、強度の低下等の原因とな
る。The average particle size of this calcium silicate hydrate is
There is no particular limitation as long as it is 5 μm or less, but it is preferable to use calcium silicate hydrate having an average particle size of 1 to 3 μm. The average particle size as used herein means one calculated from the particle size distribution measured by a laser diffraction type particle size distribution measuring device. If the average particle size is more than 5 μm, the dispersion during filling becomes poor, which causes a decrease in strength and the like.
【０００８】なお、１０μｍ以上の粒径を有するもの
は、実質的に存在しないことが好ましい。更に、上記の
平均粒径を有する珪酸カルシウム水和物であれば、形状
については特に限定する必要はない。It is preferable that there is substantially no particles having a particle size of 10 μm or more. Further, the shape is not particularly limited as long as it is a calcium silicate hydrate having the above average particle diameter.
【０００９】[0009]
【作用】珪酸カルシウム水和物は、主要化学成分として
シリカ分とカルシウム分を有している。シリカ分を含ん
でいることにより充填後のゴムの力学的物性を維持ある
いは向上させ、また、カルシウム分が存在していること
により充填剤のｐＨが１０以上になるので、充填後のゴ
ムの加硫促進効果が期待できる。[Function] Calcium silicate hydrate has silica and calcium as main chemical components. The inclusion of the silica content maintains or improves the mechanical properties of the rubber after filling, and the presence of the calcium content increases the pH of the filler to 10 or more. A sulfur-accelerating effect can be expected.
【００１０】また、平均粒径が５μｍ以下であることに
より分散性がよくなり、充填剤添加後の引張り強度、伸
び、引裂強度等の力学的物性を向上させることができ
る。Further, when the average particle size is 5 μm or less, the dispersibility is improved and mechanical properties such as tensile strength, elongation and tear strength after the addition of the filler can be improved.
【００１１】[0011]
【実施例】以下に、実施例、比較例、を用いて本発明を
さらに詳しく説明する。実施例に使用した珪酸カルシウ
ム水和物は、ＡＬＣを適当な粒径に砕いた後、スプレー
ドライヤーにより乾燥したものを使用した。実施例、比
較例に示す粒度分布、加硫速度、ゴム強度各々は、以下
の方法で測定した。 粒度分布測定：レーザー回折式粒度分布測定装置に
より測定 加硫特性測定：レオメーターにより測定 力学的物性測定：ＪＩＳ−Ｋ ６３０１に準じて測
定 また、ゴム加工における配合比を表１に示す。EXAMPLES The present invention will be described in more detail below with reference to examples and comparative examples. The calcium silicate hydrate used in the examples was prepared by crushing ALC into an appropriate particle size and then drying it with a spray dryer. The particle size distributions, vulcanization rates, and rubber strengths shown in Examples and Comparative Examples were measured by the following methods. Particle size distribution measurement: Measured by a laser diffraction type particle size distribution measuring device Vulcanization property measurement: Measured by rheometer Mechanical physical property measurement: Measured according to JIS-K 6301 Table 1 shows the compounding ratio in rubber processing.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【実施例１】ＡＬＣを微粉砕し、平均粒径を２μｍに粉
砕したもの（粒径１０μｍ以上のものは実質的に存在し
なかった。）をゴム充填剤とし、表１の配合比に従いゴ
ムを加工した。加工後のゴムについて、加硫速度及びゴ
ム強度を測定した。その結果について表２に示す。ま
た、加工時の作業性、加工性については、良好であっ
た。Example 1 ALC was pulverized to an average particle size of 2 μm (substantially no particles having a particle size of 10 μm or more were present), which was used as a rubber filler. Was processed. The vulcanization rate and the rubber strength of the processed rubber were measured. The results are shown in Table 2. The workability and workability during processing were good.
【００１４】[0014]
【実施例２】ＡＬＣを微粉砕し、平均粒径を３μｍに粉
砕したもの（粒径１０μｍ以上のものは実質的に存在し
なかった。）をゴム充填剤とし、表１の配合比に従いゴ
ムを加工した。加工後のゴムについて実施例１と同様の
測定を行った。その結果について表２に示す。また、加
工時の作業性、加工性については、良好であった。Example 2 ALC was pulverized to an average particle size of 3 μm (substantially no particles having a particle size of 10 μm or more were present) as a rubber filler, and rubber was used according to the compounding ratio in Table 1. Was processed. The same measurement as in Example 1 was performed on the processed rubber. The results are shown in Table 2. The workability and workability during processing were good.
【００１５】[0015]
【比較例１】ＡＬＣを微粉砕し、平均粒径を１０μｍに
粉砕したものをゴム充填剤とし、表１の配合比に従いゴ
ムを加工した。加工後のゴムについて実施例１と同様の
測定を行った。その結果について表２に示す。また、加
工時の作業性、加工性については、良好であった。Comparative Example 1 ALC was finely pulverized and pulverized to an average particle size of 10 μm to obtain a rubber filler, and rubber was processed according to the compounding ratio shown in Table 1. The same measurement as in Example 1 was performed on the processed rubber. The results are shown in Table 2. The workability and workability during processing were good.
【００１６】[0016]
【比較例２】平均粒径が３μｍの炭酸カルシウムをゴム
充填剤とし、上記配合比に従いゴムを加工することで、
実施例１同様の測定を行った。その結果を表２に示す。
また、加工時の作業性、加工性については、良好であっ
た。Comparative Example 2 Calcium carbonate having an average particle size of 3 μm was used as a rubber filler, and the rubber was processed according to the above compounding ratio.
The same measurement as in Example 1 was performed. The results are shown in Table 2.
The workability and workability during processing were good.
【００１７】[0017]
【比較例３】平均粒径を２μｍのクレー類をゴム充填剤
とし、上記配合比に従いゴムを加工することで、実施例
１同様の測定を行った。その結果を表２に示す。また、
加工時の作業性、加工性については、良好であった。ク
レーに関しては、白石カルシウム性のハードクレーを使
用した。Comparative Example 3 The same measurements as in Example 1 were carried out by using clays having an average particle size of 2 μm as a rubber filler and processing the rubber according to the above compounding ratio. The results are shown in Table 2. Also,
The workability and workability during processing were good. As for clay, shiraishi calcium-based hard clay was used.
【表２】 [Table 2]
【００１８】[0018]
【発明の効果】本発明によるゴム充填剤は、平均粒径を
５μｍ以下の珪酸カルシウム水和物を使用することによ
り、充填剤添加後の力学的物性を落とすことなく、加工
時の加硫速度等の加硫特性を向上させることのできる、
画期的なゴム充填剤を提供することができる。INDUSTRIAL APPLICABILITY The rubber filler according to the present invention uses a calcium silicate hydrate having an average particle size of 5 μm or less, so that the vulcanization rate during processing can be achieved without deteriorating the mechanical properties after the filler is added. Vulcanization characteristics such as
An epoch-making rubber filler can be provided.
Claims (1)
和物からなるゴムの充填剤。1. A rubber filler made of calcium silicate hydrate having an average particle size of 5 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4824493A JPH06256583A (en) | 1993-03-09 | 1993-03-09 | Filler for rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4824493A JPH06256583A (en) | 1993-03-09 | 1993-03-09 | Filler for rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06256583A true JPH06256583A (en) | 1994-09-13 |
Family
ID=12798033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4824493A Withdrawn JPH06256583A (en) | 1993-03-09 | 1993-03-09 | Filler for rubber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06256583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7652648B2 (en) | 1998-02-24 | 2010-01-26 | Nec Corporation | Liquid crystal display apparatus and method of driving the same |
-
1993
- 1993-03-09 JP JP4824493A patent/JPH06256583A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7652648B2 (en) | 1998-02-24 | 2010-01-26 | Nec Corporation | Liquid crystal display apparatus and method of driving the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000509 |