JPH0369833A - Shock absorbing structuer - Google Patents
Shock absorbing structuerInfo
- Publication number
- JPH0369833A JPH0369833A JP1205131A JP20513189A JPH0369833A JP H0369833 A JPH0369833 A JP H0369833A JP 1205131 A JP1205131 A JP 1205131A JP 20513189 A JP20513189 A JP 20513189A JP H0369833 A JPH0369833 A JP H0369833A
- Authority
- JP
- Japan
- Prior art keywords
- container
- shock
- aluminum hydroxide
- inner container
- outer container
- 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.)
- Granted
Links
- 230000035939 shock Effects 0.000 title abstract description 13
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 15
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 30
- 239000002994 raw material Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000006096 absorbing agent Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 239000006260 foam Substances 0.000 abstract 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000012857 radioactive material Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical group N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229910052902 vermiculite Inorganic materials 0.000 description 2
- 235000019354 vermiculite Nutrition 0.000 description 2
- 239000010455 vermiculite Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- -1 polyol compound Chemical class 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Vibration Dampers (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、放射性物質輸送容器などの輸送容器の落下
時などにおいて容器に加わる衝撃を緩和するＭ衝構造体
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an M-impact structure that reduces the impact applied to a transport container such as a radioactive material transport container when the container falls.
［従来の技術］
従来、放射性物質輸送容器用のショックアブソーバとし
ては、パルサーウッド、ファープライウッド、ゴム、バ
ーミキュライトコンクリートなどが用いられてきた。[Prior Art] Pulsar wood, fir plywood, rubber, vermiculite concrete, and the like have been used as shock absorbers for radioactive material transport containers.
［発明が解決しようとする課題］
しかし、パルサーウッドは天然素材であり木目の方向性
などにより強度か異なり、また密度にもばらつきかある
ため、緩衝性能にばらつきか生じるという問題点があり
、また、プライウッドもパルサーウッドはどではないが
同様に特性のばらつきの問題点があり、また、二次加工
製品であるため構造体が高価になるという問題点かある
。さらに、ゴムについては部分緩衝材として用いられる
が高価であるという問題点がある。また上記材料はいず
れも可燃物質でありＷｌ街構造体として十分な耐熱性を
有しないという問題点がある。一方、バーミキュライト
コンクリートについては不燃性ではあるか、均一に充填
することが困雑で衝撃緩衝特性にばらつきか生じやすく
、また、水分を含有するため一４０度というような低温
では凍結による特性の低下が生じるなど緩衝構造体とし
ての特性に関する問題点がある。[Problems to be solved by the invention] However, since Pulsar wood is a natural material, its strength varies depending on the direction of the wood grain, and its density also varies, so there is a problem that variations in cushioning performance occur. Although plywood is not similar to pulsarwood, it has the same problem of variations in properties, and since it is a secondary processed product, the structure is expensive. Furthermore, rubber is used as a partial cushioning material, but there is a problem in that it is expensive. Further, all of the above-mentioned materials are combustible substances and have a problem in that they do not have sufficient heat resistance for a W1 street structure. On the other hand, vermiculite concrete is not combustible, it is difficult to fill it uniformly, and its shock-absorbing properties tend to vary, and since it contains water, its properties deteriorate due to freezing at temperatures as low as 140 degrees Celsius. There are problems with the properties of the buffer structure, such as the occurrence of
この発明は、上記のような問題点を解決するものであり
、難燃性で、安定した衝撃緩衝特性を有する緩衝構造体
を提供することを目的とする。The present invention solves the above-mentioned problems, and aims to provide a buffer structure that is flame retardant and has stable impact buffer properties.
［課題を解決するための手段］
この発明のＭＩ街構造体は、
輸送対象物を収容する内容器の外側に形成され、前記内
容器の少なくとも一部を覆う外容器と、前記外容器と内
容器の間に形成された空間に充填された、水酸化アルミ
ニウム５〜６５重量％と発泡ポリウレタン樹脂３５〜９
５重量％とを含む緩衝材と
を備えている。[Means for Solving the Problems] The MI town structure of the present invention includes: an outer container formed outside an inner container for storing an object to be transported and covering at least a part of the inner container; 5 to 65% by weight of aluminum hydroxide and 35 to 9% of foamed polyurethane resin filled into the space formed between the containers
5% by weight of a cushioning material.
この発明において、水酸化アルミニウムとポリウレタン
の混合比率は、水酸化アルミニウム５〜６５重量％に対
し、ポリウレタン樹脂３５〜９５重量％であるが、自己
消火性を付与し、かつ、粘度等を作業性を低下させない
ような範囲に維持する見地からは、水酸化アルミニウム
を３８〜４５重量％含有することが望ましい、また、ポ
リウレタン樹脂は、その製造時にオープン化助剤を含む
ものであってもよい。In this invention, the mixing ratio of aluminum hydroxide and polyurethane is 5 to 65% by weight of aluminum hydroxide and 35 to 95% by weight of polyurethane resin, which provides self-extinguishing properties and improves viscosity and other workability. From the standpoint of maintaining the aluminum hydroxide content within a range that does not reduce the content, it is desirable to contain 38 to 45% by weight of aluminum hydroxide, and the polyurethane resin may also contain an opening aid during its production.
また、この発明の＃！衝剤の充填は、流動性を有する緩
衝材原料を内容器と外容器との間の空間に注入すること
により行ってもよい。Also, # of this invention! The filling of the buffer agent may be performed by injecting a fluid buffer material raw material into the space between the inner container and the outer container.
［作用］
この発明の緩衝構造体においては、外容器は緩衝材の保
形用の型の役割を果たし、水酸化アルミニウムと発泡ポ
リウレタン樹脂を含む緩衝材は、内容器と外容器との間
に形成される空間に充填されて硬化し、難燃性と圧縮強
度など衝撃を吸収するために必要な性質を備ｔたを緩衝
材として、落下時などに輸送容器に加わる衝撃を吸収す
る。[Function] In the buffer structure of the present invention, the outer container serves as a shape-retaining mold for the buffer material, and the buffer material containing aluminum hydroxide and foamed polyurethane resin is placed between the inner container and the outer container. It is filled into the space that is formed and hardens, and the cushioning material, which has the necessary properties to absorb impact such as flame retardancy and compressive strength, absorbs the impact that is applied to the transport container when it is dropped.
また、水酸化アルミニウムの含有率が３８〜４５重量％
の範囲であるとき１ｔ！衝材はより顕著な自己消火性を
示し、かつ、１ｉ材原料混合時に過度の粘度上昇がなく
作業圧が低下することがない。In addition, the content of aluminum hydroxide is 38 to 45% by weight.
When it is within the range of 1t! The cushioning material exhibits more remarkable self-extinguishing properties, and there is no excessive increase in viscosity and no decrease in working pressure when mixing raw materials for the 1i material.
さらに、緩衝材の充填を注入により行うことは、緩衝構
造体の製造時の作業性を向上させ、かつ、緩衝材の均一
でばらつきのない緩衝性能をもたらす。Furthermore, filling the cushioning material by injection improves workability during manufacturing of the cushioning structure, and provides uniform and consistent cushioning performance of the cushioning material.
［実施例］
以下、この発明の実施例を図に基づいて説明する。第１
図はこの発明の実施例である放射性物質輸送容器用の緩
衝構造体を示す、核燃料を収納する筒状の内容器１は中
性子遮蔽材２で覆われている。内容器１の外周には放熱
のためのフィン３が多数設けられており、これらを覆う
ように薄い鋼板の外容器４が形成され、脚５により支持
されている。外客器４と内容器１との間の空間には、１
００重量部のインシアネート化合物タゲネートＲＩ−Ｏ
ＩＰ＜武田薬品工業株式会社製）と、１００重量部のポ
リオール化合物タゲネートＲ１−１０ＲＦ−３００（武
田薬品工業株式会社製）と５重量部のオープン化助剤と
を含むポリウレタン樹脂原料と、１５０部の水酸化アル
ミニウム（Ａ）（ＯＨ）３）粉末とを混合した緩衝材６
が充填されている。[Example] Hereinafter, an example of the present invention will be described based on the drawings. 1st
The figure shows a buffer structure for a radioactive material transport container according to an embodiment of the present invention. A cylindrical inner container 1 containing nuclear fuel is covered with a neutron shielding material 2. A large number of fins 3 for heat radiation are provided on the outer periphery of the inner container 1, and an outer container 4 made of a thin steel plate is formed to cover these fins and is supported by legs 5. In the space between the outer container 4 and the inner container 1, 1
00 parts by weight of incyanate compound Tagenate RI-O
IP<manufactured by Takeda Pharmaceutical Co., Ltd.), 100 parts by weight of the polyol compound Tagenate R1-10RF-300 (manufactured by Takeda Pharmaceutical Co., Ltd.) and 5 parts by weight of an opening aid, and 150 parts of polyurethane resin raw material. Buffer material 6 mixed with aluminum hydroxide (A) (OH) 3) powder
is filled.
なお上記緩衝材６を充填するにあたっては、上記の各原
料を予め混合した後上記内容器１及び外容器４の間の空
間に速やかに注入することにより均一な充填を行った。In filling the cushioning material 6, the above-mentioned raw materials were mixed in advance and then promptly injected into the space between the inner container 1 and the outer container 4, thereby achieving uniform filling.
ただし、ラインミキサなどを用いることにより、原料の
混合と注入を同時に行うことも可能であり、硬化時間が
短い場合にはこの方法が望ましい０．ｔた、緩衝材６は
前もって所定の形状に成型しておき、これを上記外客器
４と内容器１の間の空間に嵌め込むことにより充填する
こともできる。なおこの実施例では、フィン３により仕
切られた空間７．７・・・・・・にも緩衝材６を注入し
ている
この実施例の緩衝材は第２図に示すような圧縮特性を示
し、圧縮率（寸法変化率）が５０％のときの圧縮応力は
約５０ｋｏｆ／ａＩＡであった。However, by using a line mixer or the like, it is possible to mix and inject the raw materials at the same time, and this method is preferable if the curing time is short. Alternatively, the cushioning material 6 may be filled in the space between the outer container 4 and the inner container 1 by molding it into a predetermined shape in advance and fitting it into the space between the outer container 4 and the inner container 1. In this example, the cushioning material 6 is also injected into the spaces 7, 7, . The compressive stress was about 50 kof/aIA when the compression rate (dimensional change rate) was 50%.
十分な緩衝性能を得るための圧縮特性としては、圧縮率
５０％のときの圧縮応力が３０ｋｏｆ／−以上、好まし
くは４０ｋＱｆ／ａＡ以上であるような圧縮特性を有す
ることか望ましい、なお、この実施例の緩衝材は自己消
火性を示し、その密度は０．２４１１１／−であった、
さらにＭ衝打は一４０℃から８０℃の温度範囲で問題と
なるような特性の低下を示さず、比較的安定した緩衝特
性を示した。In order to obtain sufficient cushioning performance, it is desirable to have compression characteristics such that the compressive stress at a compression rate of 50% is 30 kof/- or more, preferably 40 kQf/aA or more. The example cushioning material exhibited self-extinguishing properties, and its density was 0.24111/-.
Furthermore, M-impact did not show any problem-like deterioration in properties in the temperature range of -40°C to 80°C, and exhibited relatively stable buffering properties.
上記のように構成された緩衝構造体は、内容器１の両端
部をＭ衝材６で取り囲み、かつ、フィン３の間にもＭ衝
材６を注入しており、内容器１を衝撃から保護する。The buffer structure configured as described above surrounds both ends of the inner container 1 with M-shock material 6, and also injects M-shock material 6 between the fins 3, so that the inner container 1 is protected from impact. Protect.
上記実施例ではフィンを有する容器のＩＮ街構造体を示
したが、フィンを有しない筒状の容器の場合においては
、容器の両端を緩衝材で覆うように構成してもよく、ま
た容器全体をＩ！衝衝打覆うようにしてもよい。In the above embodiment, the inner structure of the container with fins is shown, but in the case of a cylindrical container without fins, the structure may be such that both ends of the container are covered with a cushioning material, or the entire container may be covered with a cushioning material. I! The impact may be covered.
また、上記実施例では、放射性物質輸送容器について説
明したが、この発明の緩衝構造体はこれに限られるもの
ではなく、衝撃を避ける必要があるもの、例えば精密機
器などの輸送容器にも適用することが可能である。Further, in the above embodiments, a radioactive material transport container was described, but the buffer structure of the present invention is not limited to this, but can also be applied to transport containers for things that need to be protected from impact, such as precision equipment. Is possible.
さらに、この発明は、輸送容器に限らず、据置型の機器
や、その容器の緩衝構造体にも適用することができる。Furthermore, the present invention is applicable not only to transportation containers but also to stationary equipment and buffer structures for such containers.
［発明の効果］
この発明のＭＩ衝構造体は、輸送容器の少なくとも一部
を外容器で覆い、輸送容器と外容器との間の空間に水酸
化アルミニウムとポリウレタン樹脂とを含む緩衝材を充
填するようにしているため、緩衝材が均質であり、難燃
性でかつ広い温度範囲で安定した緩衝特性を有する優れ
た緩衝構造体を得ることができる。また、水酸化アルミ
ニウムの含有率を適切な範囲に調節することにより緩衝
材に自己消火性を付与し、より安全性の高い緩衝構造体
を得ることができる。さらに、原料を注入する方法で緩
衝材を形成することにより、製造時の作業性を改善する
ことができる。[Effects of the Invention] The MI shock structure of the present invention covers at least a portion of the transport container with an outer container, and fills the space between the transport container and the outer container with a cushioning material containing aluminum hydroxide and polyurethane resin. As a result, it is possible to obtain an excellent buffer structure in which the buffer material is homogeneous, flame retardant, and has stable buffer properties over a wide temperature range. Further, by adjusting the content of aluminum hydroxide within an appropriate range, self-extinguishing properties can be imparted to the cushioning material, and a safer cushioning structure can be obtained. Furthermore, by forming the buffer material by injecting raw materials, workability during manufacturing can be improved.
第１図はこの発明の実施例にかかる緩衝構造体を示す部
分断面図、第２図は上記実施例の緩衝材の圧縮特性を示
す線図である。FIG. 1 is a partial sectional view showing a buffer structure according to an embodiment of the present invention, and FIG. 2 is a diagram showing the compression characteristics of the buffer material of the above embodiment.
Claims (3)
前記内容器の少なくとも一部を覆う外容器と、前記外容
器と内容器の間に形成された空間に充填された、水酸化
アルミニウム５〜６５重量％と発泡ポリウレタン樹脂３
５〜９５重量％とを含む緩衝材と を備えた緩衝構造体。(1) Formed on the outside of the inner container that accommodates the object to be transported,
an outer container that covers at least a portion of the inner container, and 5 to 65% by weight of aluminum hydroxide and foamed polyurethane resin 3 filled in a space formed between the outer container and the inner container.
A cushioning structure comprising a cushioning material containing 5 to 95% by weight.
〜４５重量％であることを特徴とする請求項１記載の緩
衝構造体。(2) The content of aluminum hydroxide in the buffer material is 38
2. A cushioning structure according to claim 1, characterized in that it is 45% by weight.
充填が、流動性を有する緩衝材原料の混合体を注入する
ことにより行われたものであることを特徴とする請求項
１記載の緩衝構造体。(3) A claim characterized in that the space between the outer container and the inner container is filled with the buffer material by injecting a mixture of fluid buffer material raw materials. 1. The buffer structure according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1205131A JP2952283B2 (en) | 1989-08-08 | 1989-08-08 | Method for manufacturing buffer structure for radioactive substance transport container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1205131A JP2952283B2 (en) | 1989-08-08 | 1989-08-08 | Method for manufacturing buffer structure for radioactive substance transport container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0369833A true JPH0369833A (en) | 1991-03-26 |
| JP2952283B2 JP2952283B2 (en) | 1999-09-20 |
Family
ID=16501949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1205131A Expired - Lifetime JP2952283B2 (en) | 1989-08-08 | 1989-08-08 | Method for manufacturing buffer structure for radioactive substance transport container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2952283B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1205940A1 (en) * | 2000-11-07 | 2002-05-15 | Global Nuclear Fuel-Americas, LLC | Shipping container for radioactive materials and methods of fabrication |
| WO2004001766A3 (en) * | 2002-06-25 | 2004-03-18 | Polygro Trading Ag | Container system for the transport and storage of highly reactive materials |
-
1989
- 1989-08-08 JP JP1205131A patent/JP2952283B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1205940A1 (en) * | 2000-11-07 | 2002-05-15 | Global Nuclear Fuel-Americas, LLC | Shipping container for radioactive materials and methods of fabrication |
| WO2004001766A3 (en) * | 2002-06-25 | 2004-03-18 | Polygro Trading Ag | Container system for the transport and storage of highly reactive materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2952283B2 (en) | 1999-09-20 |
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