JPH0769461B2 - Radiation resistant lining material - Google Patents
Radiation resistant lining materialInfo
- Publication number
- JPH0769461B2 JPH0769461B2 JP63294366A JP29436688A JPH0769461B2 JP H0769461 B2 JPH0769461 B2 JP H0769461B2 JP 63294366 A JP63294366 A JP 63294366A JP 29436688 A JP29436688 A JP 29436688A JP H0769461 B2 JPH0769461 B2 JP H0769461B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- lining material
- radiation resistant
- resistant lining
- 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.)
- Expired - Lifetime
Links
Landscapes
- Paints Or Removers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は耐放射線性ライニング材に関し、特に、放射線
の影響下で使用される施設、器具等の壁面、床面などを
防護するのに有用であるライニング材に関する。TECHNICAL FIELD The present invention relates to a radiation resistant lining material, and is particularly useful for protecting walls, floors, etc. of facilities, equipment, etc. used under the influence of radiation. Regarding lining materials.
従来の技術 従来、放射線の影響下で使用される施設の壁面、床面な
ど例えば放射性廃棄物用の多重容器などの器具の内面を
防護するためのライニング材としては、コンクリート、
並びにメラミン樹脂系塗料、エポキシ樹脂系塗料が用い
られてきた。Conventional technology Conventionally, concrete is used as a lining material for protecting the inner surfaces of equipment such as multiple walls for radioactive waste, such as wall surfaces and floor surfaces of facilities used under the influence of radiation,
In addition, melamine resin-based paints and epoxy resin-based paints have been used.
特に、放射性廃棄物用の多量容器の場合には、形成され
る塗膜には耐放射線性に加え、耐浸出性、防錆性、粘弾
性ないし柔軟性、耐久性、附着性等も要求される。In particular, in the case of a large amount container for radioactive waste, the coating film formed is required to have not only radiation resistance but also leaching resistance, rust resistance, viscoelasticity or flexibility, durability, adhesiveness, etc. It
発明が解決しようとする課題 しかしながら、ライニング材としてのコンクリートは剛
性が高くて粘弾性ないしは柔軟性を欠くという欠点を有
し、他方メラミン樹脂系やエポキシ樹脂系の塗料は耐放
射線性が低いという問題を有している。このように従来
のライニング材はいずれも前記の要求に十分応え得るも
のではなかった。Problems to be Solved by the Invention However, concrete as a lining material has a drawback that it has high rigidity and lacks viscoelasticity or flexibility, while melamine resin-based and epoxy resin-based paints have a problem that radiation resistance is low. have. As described above, none of the conventional lining materials can sufficiently meet the above-mentioned requirements.
そこで、本発明は、前記の要求特性をバランス良く備え
た耐放射線性ライニング材を提供するものである。Therefore, the present invention provides a radiation resistant lining material having the above-mentioned required characteristics in a well-balanced manner.
課題を解決するための手段 すなわち、本発明は、前記の問題点を解決するものとし
て、 （Ａ） 超速硬セメント100重量部 （Ｂ） 骨材50〜300重量部 及び （Ｃ） ポリマーエマルジョン80〜120重量部を含有し
てなる耐放射線性ライニング材である。Means for Solving the Problems That is, the present invention is to solve the above-mentioned problems by: (A) 100 parts by weight of ultra-rapid hardening cement (B) 50 to 300 parts by weight of aggregate and (C) polymer emulsion 80 to A radiation resistant lining material containing 120 parts by weight.
本発明のライニング材に用いられる（Ａ）成分の超速硬
セメントとしてはジェットセメント（住友セメント
（株）製）等の商品名で市販されているものが挙げられ
る。Examples of the ultra-quick cement (A) used in the lining material of the present invention include those commercially available under the trade name of jet cement (manufactured by Sumitomo Cement Co., Ltd.).
（Ｂ） 成分の骨材は、0.6m.m〜0.2m.m程度のものが好
ましく、材質としては、珪砂、鉄系粒等が挙げられ、必
要に応じて２種以上併用しても良い。この（Ｂ）成分の
骨材は、（Ａ）成分の超速硬セメント100重量部当り、
真比重2.65換算で50〜300重量部、好ましくは150〜300
重量部の割合で使用される。この骨材が50重量部未満で
あると、得られる塗膜の機械的強度、耐摩耗性、粘弾性
ないしは柔軟性が低下し、また300重量部を超えると、
得られる塗膜の粘弾性ないしは柔軟性が低下する。The aggregate of the component (B) is preferably about 0.6 mm to 0.2 mm, examples of the material include silica sand, iron-based particles, and the like, and if necessary, two or more kinds may be used in combination. This (B) component aggregate is based on 100 parts by weight of the (A) component ultra-rapid cement.
50 to 300 parts by weight in terms of true specific gravity 2.65, preferably 150 to 300
Used in parts by weight. If the aggregate is less than 50 parts by weight, the mechanical strength of the coating film obtained, wear resistance, viscoelasticity or flexibility is reduced, and if it exceeds 300 parts by weight,
The viscoelasticity or flexibility of the obtained coating film decreases.
（Ｃ）成分のポリマーエマルジョンとしては、例えば、
アクリル系樹脂の水性エマルジョン等が挙げられ、好ま
しくはアクリル樹脂系エマルジョンである。Examples of the polymer emulsion as the component (C) include, for example,
Aqueous emulsions of acrylic resins can be mentioned, and acrylic resin emulsions are preferred.
この（Ｃ）成分のポリマーエマルジョンは、固形分濃度
が49〜50重量％のものが好ましい。この（Ｃ）成分は、
（Ａ）成分の超速硬セメント100重量部当り、80〜300重
量部、好ましくは80〜150重量部配合される。この配合
割合が80重量部未満であると、得られる塗膜の粘弾性な
いしは柔軟性等が不十分であり、また300重量部を超え
ると樹脂の性質が過多となりライニング材に求めた当初
の性質を得ることができない。The polymer emulsion of the component (C) preferably has a solid content concentration of 49 to 50% by weight. This (C) component is
The component (A) is added in an amount of 80 to 300 parts by weight, preferably 80 to 150 parts by weight, per 100 parts by weight of ultra-rapid cement. If this blending ratio is less than 80 parts by weight, the resulting coating film has insufficient viscoelasticity or flexibility, and if it exceeds 300 parts by weight, the properties of the resin become excessive and the initial properties required for the lining material are obtained. Can't get
本発明のライニング材には、上記（Ａ）〜（Ｃ）成分の
ほかに、必要に応じて硬化遅延剤、例えばジェットセッ
ター等の添加剤を適宜配合することができる。In the lining material of the present invention, in addition to the components (A) to (C) described above, a curing retarder, for example, an additive such as a jet setter may be appropriately blended, if necessary.
本発明のライニング材を施工するには、必要ならばさら
に水を添加して調整し、例えば吹付け、遠心力を利用す
る方法等の方法で基材上に塗膜を形成し、放置すれば良
い。To apply the lining material of the present invention, if necessary, further add water to adjust, for example, spraying, to form a coating film on the substrate by a method of utilizing centrifugal force, if left standing good.
作用 本発明のライニング材の硬化により得られる塗膜は、
（Ａ）〜（Ｃ）の各成分の特性が相まって、多重容器な
どのライニングに求められる前記の要求特性がバランス
よく発揮されるものと考えられる。特に鋼材との関係に
おいては、高い接着強度を示すとともに粘弾性に優れる
ために温度や圧力の変化に伴う鋼材の伸縮、変形に追従
し得る伸縮能力及び耐疲労性能を備え、さらに含有され
るセメント成分中のアルカリが溶出しないので鋼材接触
面近傍におけるアルカリ性雰囲気が保持され良好な防錆
効果が発揮保持される。Action The coating film obtained by curing the lining material of the present invention,
It is considered that the characteristics of each of the components (A) to (C) are combined to achieve the above-mentioned required characteristics required for the lining of a multi-layer container in a well-balanced manner. Especially in relation to steel materials, it has high adhesive strength and excellent viscoelasticity, so it has expansion and contraction ability and fatigue resistance that can follow deformation and deformation of steel materials due to changes in temperature and pressure, and further contains cement. Since the alkali in the components does not elute, the alkaline atmosphere is maintained in the vicinity of the steel material contact surface, and a good rust preventive effect is maintained.
実施例 本発明のライニング材を実施例により具体的に説明す
る。Example The lining material of the present invention will be specifically described by way of examples.
下記の材料を示した配合比で用いた。The following materials were used in the compounding ratios shown.
（ａ） 超速硬セメント 100重量部 （商品名ジェットセメント、住友セメント（株）製） （ｂ） 珪砂 150重量部 （Ｃ） アクリル樹脂系エマルジョン 90重量部 （固形分49.5重量％、商品名SH−38、ヘキスト合成社
製） （ｄ） 硬化遅延剤 0.2〜0.4重量部 （商品名ジェット・セッター） （ｅ） 水 10重量部 まず、水に硬化遅延剤を溶解して混練容器に投入後、超
速硬セメントと珪砂を混合したものを徐々に均一に投入
し、混合を行った。得られた配合物を用いて塗装ガンに
より塗膜を形成し、下記の試験に供した。(A) Super rapid hardening cement 100 parts by weight (trade name Jet Cement, Sumitomo Cement Co., Ltd.) (b) Silica sand 150 parts by weight (C) Acrylic resin emulsion 90 parts by weight (solid content 49.5% by weight, trade name SH- 38, manufactured by Hoechst Synthetic Co., Ltd. (d) Settling retarder 0.2 to 0.4 parts by weight (trade name: Jet Setter) (e) 10 parts by weight of water First, the settling retarder is dissolved in water and put into a kneading container, and then super speeded. A mixture of hard cement and silica sand was gradually and uniformly added and mixed. A coating film was formed by using the obtained composition with a coating gun, and subjected to the following test.
I.力学的特性及び吸水率 試験体作成28日後に、第１表に示す測定条件により測定
を行った。測定結果も同表に示す。I. Mechanical Properties and Water Absorption Rate 28 days after the preparation of the test piece, measurement was performed under the measurement conditions shown in Table 1. The measurement results are also shown in the same table.
II.耐放射線性 厚さ1.6m.m、幅5cm及び長さ15cmの鉄板に、第２表に示
す厚さの塗膜を形成した４種の試験体に下記の条件で放
射線を照射し、照射前後の重量変化を測定した。結果を
第２表に示す。 II. Radiation resistance Four types of test specimens, each having a thickness of 1.6 mm, a width of 5 cm, and a length of 15 cm and having a coating film having the thickness shown in Table 2 formed thereon, were irradiated with radiation under the following conditions. The change in weight was measured. The results are shown in Table 2.
照射時間 900時間（昭和60年９月〜12月） 線源 コバルト60 線量率 １×103レンドゲン/h 照射線量 900メガレントゲン III.放射性核種の浸出試験 前記IIの塗膜から厚さ１〜2m.m、直径5cmの円板状試験
片を切出し、IAEAの試験基準に従って測定を行った。核
種として137Cs及び60Coを使用し、温度条件は深海底を
模擬した２℃及び温度変化のある常温について行った。Irradiation time 900 hours (September to December 1985) Radiation source Cobalt 60 Dose rate 1 × 10 3 rendogen / h Irradiation dose 900 mega roentgen III. Radionuclide Leaching Test A disc-shaped test piece having a thickness of 1 to 2 m.m and a diameter of 5 cm was cut out from the coating film of II and measured according to the IAEA test standard. 137 Cs and 60 Co were used as nuclides, and the temperature conditions were 2 ° C. simulating the deep sea floor and room temperature with temperature change.
結果を第１図及び第２図に示す。The results are shown in FIGS. 1 and 2.
発明の効果 実施例からも明らかなとおり、本発明の耐放射線性ライ
ニング材は、耐浸出性、粘弾性等の力学的諸性、防錆
性、耐久性等に優れるものであり、放射線影響化にある
施設、器具等の防護用塗膜として有用である。EFFECTS OF THE INVENTION As is clear from the examples, the radiation resistant lining material of the present invention is excellent in leaching resistance, mechanical properties such as viscoelasticity, rust prevention, durability, etc. It is useful as a protective coating for facilities, equipment, etc.
第１図及び第２図は、本発明のライニング材で成形した
塗膜の放射性核種の浸出試験結果を示すグラフである。FIG. 1 and FIG. 2 are graphs showing the results of radionuclide leaching test of coating films formed from the lining material of the present invention.
Claims (1)
重量部を含有してなる耐放射線性ライニング材。1. (A) 100 parts by weight of ultra-rapid cement, (B) 50-300 parts by weight of aggregate, and (C) acrylic resin-based polymer emulsion 80-120.
A radiation resistant lining material containing parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63294366A JPH0769461B2 (en) | 1988-11-21 | 1988-11-21 | Radiation resistant lining material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63294366A JPH0769461B2 (en) | 1988-11-21 | 1988-11-21 | Radiation resistant lining material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02140700A JPH02140700A (en) | 1990-05-30 |
| JPH0769461B2 true JPH0769461B2 (en) | 1995-07-31 |
Family
ID=17806780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63294366A Expired - Lifetime JPH0769461B2 (en) | 1988-11-21 | 1988-11-21 | Radiation resistant lining material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0769461B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036899A (en) * | 1973-08-03 | 1975-04-07 |
-
1988
- 1988-11-21 JP JP63294366A patent/JPH0769461B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02140700A (en) | 1990-05-30 |
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