JPH08157811A - Thermal storage element - Google Patents
Thermal storage elementInfo
- Publication number
- JPH08157811A JPH08157811A JP6303457A JP30345794A JPH08157811A JP H08157811 A JPH08157811 A JP H08157811A JP 6303457 A JP6303457 A JP 6303457A JP 30345794 A JP30345794 A JP 30345794A JP H08157811 A JPH08157811 A JP H08157811A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- organic
- storage body
- thermal storage
- substrate
- 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- Withdrawn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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は相転移に伴う潜熱を利用
した蓄熱体からなる蓄熱素子に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage element comprising a heat storage body utilizing latent heat associated with a phase transition.
【０００２】[0002]
【従来の技術】相転移に伴う潜熱を利用した蓄熱体から
なる蓄熱素子として、パラフィン等の有機系蓄熱材を樹
脂に担持した潜熱蓄熱材が知られている。このような固
相−液相間の相転移を利用した潜熱蓄熱材においては、
相の転移により液体になった際、有機系蓄熱材が担持さ
れている樹脂から流出するのを防ぐ配慮が必要となる。
このため、特開昭５９−１７０１８０号公報では樹脂と
して超高分子ポリエチレン、特開昭６２−１８７７８２
号公報ではポリオレフィンが提案されている。しかし、
近年の蓄熱素子の使用範囲の拡大に伴い、有機系蓄熱材
のしみ出しをより少なく、且つ、寸法変化率が小さく変
形のない蓄熱素子が求められている。2. Description of the Related Art A latent heat storage material in which an organic heat storage material such as paraffin is supported on a resin is known as a heat storage element composed of a heat storage body utilizing latent heat associated with a phase transition. In such a latent heat storage material utilizing the phase transition between the solid phase and the liquid phase,
When it becomes liquid due to the phase transition, consideration must be given to prevent the organic heat storage material from flowing out from the carried resin.
Therefore, in JP-A-59-170180, an ultra-high molecular weight polyethylene is used as a resin, and in JP-A-62-187782.
Polyolefin is proposed in the publication. But,
With the expansion of the range of use of heat storage elements in recent years, there has been a demand for a heat storage element that is less likely to seep out of an organic heat storage material and has a small dimensional change rate and no deformation.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記事実に鑑
みてなされたもので、その目的とするところは、樹脂に
有機系蓄熱材を担持した蓄熱体からなる蓄熱素子であっ
て、有機系蓄熱材のしみだしが少なく、且つ、寸法変化
率の小さい蓄熱素子を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and an object thereof is to provide a heat storage element comprising a heat storage material in which an organic heat storage material is supported on a resin. An object of the present invention is to provide a heat storage element in which the heat storage material has little oozing and a small dimensional change rate.
【０００４】さらに、熱交換の効率を上げるためベレッ
ト状に作製した蓄熱体が用いられる。このような複数の
蓄熱体を接触する状態で使用した場合、蓄熱体どうしが
付着し、熱交換の効率を低下させる恐れがある。本発明
の他の目的とするところは、蓄熱体どうしが付着するこ
とのない蓄熱素子を提供することにある。Further, a heat storage material manufactured in the shape of a bellet is used in order to increase the efficiency of heat exchange. When such a plurality of heat storage bodies are used in contact with each other, the heat storage bodies adhere to each other, which may reduce the efficiency of heat exchange. Another object of the present invention is to provide a heat storage element in which heat storage bodies do not adhere to each other.
【０００５】[0005]
【課題を解決するための手段】本発明の請求項１に係る
蓄熱素子は、結晶化度４０％未満の低結晶性ポリオレフ
ィンからなる基質と、この基質に担持された、固相−液
相間を可逆的に相転移する有機系蓄熱材を構成材料とす
る蓄熱体１、及び、この蓄熱体１の表面に耐油性の樹脂
フィルム２を備えることを特徴とする。The heat storage element according to claim 1 of the present invention comprises a substrate composed of a low crystalline polyolefin having a crystallinity of less than 40%, and a solid-liquid phase supported on the substrate. Is characterized by including a heat storage body 1 made of an organic heat storage material that reversibly undergoes a phase transition, and an oil resistant resin film 2 on the surface of the heat storage body 1.
【０００６】本発明の請求項２に係る蓄熱素子は、結晶
化度４０％未満の低結晶性ポリオレフィンからなる基質
と、この基質に担持された、固相−液相間を可逆的に相
転移する有機系蓄熱材を構成材料とする蓄熱体１、及
び、この蓄熱体１の表面に吸油性を有する不織布３を備
えることを特徴とする。According to a second aspect of the present invention, there is provided a heat storage element in which a substrate made of a low crystalline polyolefin having a crystallinity of less than 40% and a solid-liquid phase reversible phase transition carried on the substrate. It is characterized by comprising a heat storage body 1 made of an organic heat storage material as a constituent material, and a nonwoven fabric 3 having an oil absorbing property on the surface of the heat storage body 1.
【０００７】本発明の請求項３に係る蓄熱素子は、請求
項１又は請求項２記載の蓄熱素子において、上記基質
が、さらに結晶化度４０％以上の結晶性ポリオレフィン
を構成材料とすることを特徴とする。The heat storage element according to claim 3 of the present invention is the heat storage element according to claim 1 or 2, wherein the substrate further comprises a crystalline polyolefin having a crystallinity of 40% or more as a constituent material. Characterize.
【０００８】本発明の請求項４に係る蓄熱素子は、請求
項１乃至請求項３いずれか記載の蓄熱素子において、上
記有機系蓄熱材が結晶性ハイドロカーボン、結晶性脂肪
酸、及び結晶性脂肪酸エステルから選ばれる少なくとも
１種であることを特徴とする。The heat storage element according to claim 4 of the present invention is the heat storage element according to any one of claims 1 to 3, wherein the organic heat storage material is crystalline hydrocarbon, crystalline fatty acid, and crystalline fatty acid ester. It is characterized by being at least one selected from
【０００９】以下、本発明を詳しく説明する。図１
（ａ）は請求項１に係る蓄熱素子の一例を示した説明図
であり、（ｂ）は請求項２に係る蓄熱素子の一例を示し
た説明図である。The present invention will be described in detail below. FIG.
(A) is an explanatory view showing an example of a heat storage element according to claim 1, and (b) is an explanatory view showing an example of a heat storage element according to claim 2.
【００１０】本発明の請求項１又は請求項２に係る蓄熱
素子は、相転移に伴う潜熱を利用した蓄熱体１からな
る。上記蓄熱体１は、結晶化度４０％未満の低結晶性ポ
リオレフィンからなる基質と、この基質に担持された有
機系蓄熱材を構成材料とする。The heat storage element according to claim 1 or 2 of the present invention comprises a heat storage body 1 utilizing latent heat associated with a phase transition. The heat storage body 1 includes a substrate composed of a low crystalline polyolefin having a crystallinity of less than 40% and an organic heat storage material supported on the substrate as constituent materials.
【００１１】上記低結晶性ポリオレフィンはＸ線回折法
による結晶化度が４０％未満であり、この低結晶性ポリ
オレフィンとしては、例えば、ポリプロピレン、アタク
チックポリプロピレン、エチレンとα−オレフィンとの
共重合体が挙げられる。このα−オレフィンとしては、
プロピレン、１−ブテン、１−ペンテン、１−ヘキセ
ン、４−メチル−１−ペンテン、１−オクテン等が挙げ
られる。The low crystalline polyolefin has a degree of crystallinity of less than 40% by X-ray diffractometry. Examples of the low crystalline polyolefin include polypropylene, atactic polypropylene, and a copolymer of ethylene and α-olefin. Is mentioned. As this α-olefin,
Propylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-octene and the like can be mentioned.
【００１２】上記蓄熱体１の基質に、蓄熱体１の強度を
向上させるために、樹脂として、上記低結晶性のポリオ
レフィンと共に、結晶化度４０％以上の結晶性ポリオレ
フィンを用いると、蓄熱体１の形状保持力を高めること
ができる。特に、低結晶性のポリオレフィンの結晶化度
が３０％以下の場合は、効果的である。上記結晶化度４
０％以上の結晶性ポリオレフィンとしては、高密度ポリ
エチレン、中密度ポリエチレン、低密度ポリエチレン、
直鎖低密度ポリエチレン、ポリプロピレン等が挙げられ
る。なお、高密度ポリエチレン、中密度ポリエチレン、
低密度ポリエチレンは、ＪＩＳ−Ｋ−６７６０で規定さ
れているものである。When a crystalline polyolefin having a crystallinity of 40% or more is used as a resin for the substrate of the heat storage body 1 in order to improve the strength of the heat storage body 1 together with the low crystallinity polyolefin, the heat storage body 1 is used. It is possible to increase the shape retention power of the. In particular, it is effective when the crystallinity of the low crystalline polyolefin is 30% or less. Crystallinity 4 above
As 0% or more of crystalline polyolefin, high density polyethylene, medium density polyethylene, low density polyethylene,
Linear low density polyethylene, polypropylene, etc. may be mentioned. In addition, high density polyethylene, medium density polyethylene,
The low-density polyethylene is defined by JIS-K-6760.
【００１３】上記有機系蓄熱材は固相−液相間を可逆的
に相転移する性質を有する物質であって、上記結晶化度
４０％未満の低結晶性のポリオレフィンと相溶性を有す
るものが望ましく、上記結晶化度４０％以上の結晶性ポ
リオレフィンを用いる場合はこの結晶性ポリオレフィン
とも相溶性を有するものが望ましい。上記有機系蓄熱材
としては、特に限定はしないが、具体的には、パラフィ
ン、パラフィンワックス、イソパラフィン、ポリエチレ
ンワックス等のハイドロカーボン、脂肪酸、及び脂肪酸
エステル類（以下脂肪酸類と記す）等が挙げられる。上
記有機系蓄熱材は融点が５〜９０℃のものが好ましく、
望ましくは融点が２０〜８０℃のものである。これらは
１種のみを用いてもよいし、２種以上を併用してもよ
い。上記有機系蓄熱材は、蓄熱の効率を保持する点よ
り、２０ｃａｌ／ｇ以上の相転移熱量を有する結晶性物
質であることが望ましい。The above organic heat storage material is a substance having a property of reversibly undergoing a phase transition between a solid phase and a liquid phase, and is compatible with the low crystalline polyolefin having a crystallinity of less than 40%. Desirably, when a crystalline polyolefin having a crystallinity of 40% or more is used, one having compatibility with the crystalline polyolefin is desirable. The organic heat storage material is not particularly limited, but specific examples thereof include hydrocarbons such as paraffin, paraffin wax, isoparaffin, and polyethylene wax, fatty acids, and fatty acid esters (hereinafter referred to as fatty acids). . The organic heat storage material preferably has a melting point of 5 to 90 ° C.,
Desirably, the melting point is 20 to 80 ° C. These may use only 1 type and may use 2 or more types together. The organic heat storage material is preferably a crystalline substance having a heat quantity of phase transition of 20 cal / g or more from the viewpoint of maintaining heat storage efficiency.
【００１４】上記蓄熱体１に用いられる構成材料の配合
比率は、蓄熱体１の用途により適宜決められるが、例え
ば、結晶化度４０％未満の低結晶性のポリオレフィンは
１０〜３０重量％、有機系蓄熱材は７０〜９０重量％が
適当である。また、結晶化度４０％以上の結晶性ポリオ
レフィンを用いる場合は、結晶化度４０％以上の結晶性
ポリオレフィンは５〜２０重量％、結晶化度４０％未満
の低結晶性のポリオレフィンは１０〜４０重量％、有機
系蓄熱材は４０〜８５重量％が適当である。The blending ratio of the constituent materials used for the heat storage body 1 is appropriately determined depending on the use of the heat storage body 1. For example, 10 to 30% by weight of a low crystalline polyolefin having a crystallinity of less than 40%, an organic 70 to 90% by weight is suitable for the system heat storage material. When a crystalline polyolefin having a crystallinity of 40% or more is used, the crystalline polyolefin having a crystallinity of 40% or more is 5 to 20% by weight, and the low crystalline polyolefin having a crystallinity of less than 40% is 10 to 40%. %, And 40 to 85% by weight is suitable for the organic heat storage material.
【００１５】上記有機系蓄熱材を担持した蓄熱体１を作
製する方法は、例えば、低結晶性のポリオレフィン等の
樹脂の融点以上の温度で混練機等で混練し、この溶融混
合物を成形することによって実現できる。上記蓄熱体１
は、例えば、押出成形、射出成形等通常のプラスチック
の成形方法で製造することができる。上記蓄熱体１に
は、樹脂、及び、有機系蓄熱材の他に必要に応じて、無
機、及び有機のフィラー、ガラス繊維、ウィスカー、金
属繊維、難燃剤、酸化防止剤等を構成材料としてもよ
い。A method for producing the heat storage material 1 carrying the above organic heat storage material is, for example, kneading with a kneader or the like at a temperature equal to or higher than the melting point of a resin such as low crystalline polyolefin, and molding the molten mixture. Can be realized by The heat storage body 1
Can be produced by a usual plastic molding method such as extrusion molding or injection molding. In addition to the resin and the organic heat storage material, the heat storage body 1 may include inorganic and organic fillers, glass fibers, whiskers, metal fibers, flame retardants, antioxidants, and the like as constituent materials, if necessary. Good.
【００１６】本発明の請求項１に係る蓄熱素子は、図１
（ａ）に示す如く、上記蓄熱体１、及び、この蓄熱体１
の表面に樹脂フィルム２を備える。上記樹脂フィルム２
としては、耐油性を有するフィルムであり、例えば、ポ
リエチレン、ポリプロピレン、ナイロン、ポリ塩化ビニ
リデン、ポリエチレンテレフタレート、エチレンビニル
アルコール共重合体等の樹脂からなるフィルムが挙げら
れ、これらの単独フィルムでも、複合フィルムでもよ
い。上記蓄熱体１の表面に耐油性を有する樹脂フィルム
２を備えると、上記有機系蓄熱材が相の転移により液体
になった際に、蓄熱素子から流出するのを防ぐことがで
きる。The heat storage element according to claim 1 of the present invention is shown in FIG.
As shown in (a), the heat storage body 1 and this heat storage body 1
Is provided with a resin film 2. The resin film 2
Examples of the film include a film having oil resistance, for example, a film made of a resin such as polyethylene, polypropylene, nylon, polyvinylidene chloride, polyethylene terephthalate, and ethylene vinyl alcohol copolymer. But it's okay. When the resin film 2 having oil resistance is provided on the surface of the heat storage body 1, it is possible to prevent the organic heat storage material from flowing out from the heat storage element when the organic heat storage material becomes liquid due to phase transition.
【００１７】上記樹脂フィルム２を蓄熱体１の表面に形
成する方法は、例えば、ポリエチレン等の樹脂と、ナイ
ロン等の樹脂からなる複合フィルムで、蓄熱体１を被覆
した後に、この複合フィルムの周囲にヒートシールを施
して密封する方法、上記蓄熱体１を樹脂フィルム２の間
に挟み、低圧で加熱する方法等が挙げられる。The method of forming the resin film 2 on the surface of the heat storage body 1 is, for example, after coating the heat storage body 1 with a composite film made of a resin such as polyethylene and a resin such as nylon, and surrounding the composite film. Examples of the method include a method of heat-sealing and heat-sealing, a method of sandwiching the heat storage body 1 between the resin films 2 and heating at a low pressure.
【００１８】本発明の請求項２に係る蓄熱素子は、図１
（ｂ）に示す如く、上記蓄熱体１、及び、この蓄熱体１
の表面に不織布３を備える。上記不織布３は吸油性を有
するものであり、例えば、流出した原油の回収、工場の
廃油の回収、懸濁油の回収等に汎用される有機系材料で
ある。上記吸油性の不織布３は、不織布３の繊維間に油
分を取り込み、膨潤する特性を有する。上記不織布３
は、具体的にはポリプロピレン繊維、ポリスチレン繊維
等からなる不織布が挙げられる。上記蓄熱体１の表面に
吸油性を有する不織布３を備えると、上記有機系蓄熱材
が相の転移により液体になった際に、上記不織布３の繊
維間に有機系蓄熱材を取り込み、蓄熱素子から流出する
のを防ぐことができる。The heat storage element according to claim 2 of the present invention is shown in FIG.
As shown in (b), the heat storage body 1 and this heat storage body 1
The non-woven fabric 3 is provided on the surface. The non-woven fabric 3 has an oil absorbing property, and is an organic material generally used for recovering spilled crude oil, recovering waste oil from a factory, recovering suspended oil, and the like. The oil-absorptive non-woven fabric 3 has a property of taking in oil between the fibers of the non-woven fabric 3 and swelling. Nonwoven fabric 3
Specifically, a non-woven fabric made of polypropylene fiber, polystyrene fiber or the like can be used. When the nonwoven fabric 3 having an oil absorbing property is provided on the surface of the heat storage body 1, when the organic heat storage material becomes liquid due to the phase transition, the organic heat storage material is taken in between the fibers of the nonwoven fabric 3 to store the heat storage element. Can be prevented from flowing out.
【００１９】上記不織布３を蓄熱体１の表面に形成する
方法は、例えば、上記蓄熱体１を不織布３の間に挟み、
低圧で加熱し強制的に蓄熱体１と不織布３を一体化して
もよいし、蓄熱体１の周囲を覆った状態で蓄熱素子を使
用し、不織布３の繊維間に有機系蓄熱材を取り込むこと
により蓄熱体１と不織布３を一体化してもよい。The method of forming the non-woven fabric 3 on the surface of the heat storage body 1 includes, for example, sandwiching the heat storage body 1 between the non-woven fabrics 3,
The heat storage body 1 and the nonwoven fabric 3 may be forcibly integrated by heating at a low pressure, or a heat storage element may be used in a state of covering the periphery of the heat storage body 1 and an organic heat storage material may be incorporated between the fibers of the nonwoven fabric 3. Therefore, the heat storage body 1 and the nonwoven fabric 3 may be integrated.
【００２０】[0020]
【作用】本発明の請求項１に係る蓄熱素子は、低結晶性
ポリオレフィンからなる基質と、この基質に担持された
有機系蓄熱材を構成材料とする蓄熱体１の表面に耐油性
の樹脂フィルム２を備えるので、樹脂フィルム２が相の
転移により液体になった有機系蓄熱材の流出を防ぐ。The heat storage element according to claim 1 of the present invention comprises a substrate made of a low crystalline polyolefin, and an oil-resistant resin film on the surface of the heat storage body 1 made of the organic heat storage material supported on the substrate as constituent materials. 2, the resin film 2 prevents the organic heat storage material that has become liquid due to the phase transition from flowing out.
【００２１】本発明の請求項２に係る蓄熱素子は、低結
晶性ポリオレフィンからなる基質と、この基質に担持さ
れた有機系蓄熱材を構成材料とする蓄熱体１の表面に吸
油性を有する不織布３を備えるので、不織布３の繊維間
に、相の転移により液体になった有機系蓄熱材を取り込
み、蓄熱素子からの流出を防ぐ。A heat storage element according to a second aspect of the present invention is a non-woven fabric having an oil absorbing property on the surface of a substrate made of a low crystalline polyolefin and an organic heat storage material supported on the substrate as a constituent material of a heat storage body 1. 3 is provided, the organic heat storage material that has become liquid due to the phase transition is taken in between the fibers of the non-woven fabric 3, and the outflow from the heat storage element is prevented.
【００２２】[0022]
【実施例】以下、本発明の実施例と比較例を挙げる。EXAMPLES Examples of the present invention and comparative examples will be described below.
【００２３】実施例１ 結晶化度４０％未満の低結晶性ポリオレフィンとして、
結晶化度６％のアタクチックポリプロピレン（住友化学
株式会社製：スミチックＳＳ−３０Ｂ、密度０．８４ｇ
／ｃｍ3 ）を２０重量％、結晶化度４０％以上の結晶性
ポリオレフィンとして、結晶化度４５％の直鎖低密度ポ
リエチレン（住友化学株式会社製：スミカセンαＦＺ２
０１−０、密度０．９１２ｇ／ｃｍ3 ）を１０重量％、
有機系蓄熱材としてパラフィン１４０品（日本精蝋株式
会社製：１４０Ｆ、融点６０℃）を７０重量％の配合比
率で配合して成形材料とした。この成形材料を１４０℃
に加熱しながら混練した溶融物を冷却し、切断し、厚さ
１５ｍｍ、長さ５０ｍｍ角の直方体の蓄熱体を作製し
た。この蓄熱体の全表面を厚さ５０μｍのポリ塩化ビニ
リデンフィルムで覆い、温度１５０℃、圧力０．１ｋｇ
／ｃｍ2 の条件で加熱し、蓄熱体の表面に樹脂フィルム
を備えた蓄熱素子を得た。Example 1 As a low crystalline polyolefin having a crystallinity of less than 40%,
Atactic polypropylene with a crystallinity of 6% (Sumitomo Chemical Co., Ltd .: Sumitic SS-30B, density 0.84 g)
/ Cm 3 ) as a crystalline polyolefin having a crystallinity of 40% or more and 20% by weight, and a linear low-density polyethylene having a crystallinity of 45% (Sumitomo Chemical Co., Ltd .: Sumikasen αFZ2)
01-0, density 0.912 g / cm 3 ) 10% by weight,
As an organic heat storage material, 140 paraffin products (manufactured by Nippon Seiro Co., Ltd .: 140F, melting point 60 ° C.) were compounded at a compounding ratio of 70% by weight to obtain a molding material. This molding material is 140 ℃
The kneaded melt was cooled while being heated to, and cut to prepare a rectangular parallelepiped heat storage body having a thickness of 15 mm and a length of 50 mm. The entire surface of this heat storage body is covered with a polyvinylidene chloride film having a thickness of 50 μm, and the temperature is 150 ° C. and the pressure is 0.1 kg.
It was heated under the condition of / cm 2 to obtain a heat storage element having a resin film on the surface of the heat storage body.
【００２４】実施例２ 実施例１と同様に蓄熱体を作製した。この蓄熱体の全表
面を厚さ４ｍｍのポリプロピレン不織布（三井石油化学
株式会社製：タフネルオイルブロッター）で二重に覆
い、蓄熱体の表面に不織布を備えた蓄熱素子を得た。Example 2 A heat storage material was prepared in the same manner as in Example 1. The entire surface of the heat storage body was doubly covered with a polypropylene non-woven fabric having a thickness of 4 mm (Tufnel oil blotter manufactured by Mitsui Petrochemical Co., Ltd.) to obtain a heat storage element having the non-woven fabric on the surface of the heat storage body.
【００２５】実施例３ 実施例１と同様に蓄熱体を作製した。樹脂フィルムとし
て、厚み１５μｍの２軸延伸ナイロンフィルムと厚み５
０μｍの直鎖低密度ポリエチレンフィルムからなるドラ
イラミネート仕様の複合フィルムを用いた。上記蓄熱体
をこの複合フィルムで覆い、周囲にヒートシールを施し
て密封し、蓄熱体の表面に樹脂フィルムを備えた蓄熱素
子を得た。Example 3 A heat storage material was prepared in the same manner as in Example 1. As a resin film, a biaxially stretched nylon film with a thickness of 15 μm and a thickness of 5
A dry laminated composite film made of a linear low-density polyethylene film of 0 μm was used. The heat storage body was covered with this composite film, and the periphery was heat-sealed to seal the heat storage body, thereby obtaining a heat storage element having a resin film on the surface of the heat storage body.
【００２６】比較例１ 実施例１と同様にして作製した、厚さ１５ｍｍ、長さ５
０ｍｍ角の直方体の蓄熱体を用いた。Comparative Example 1 A film manufactured in the same manner as in Example 1 having a thickness of 15 mm and a length of 5
A rectangular parallelepiped heat storage body of 0 mm square was used.
【００２７】上記実施例１〜３の蓄熱素子、及び、比較
例１蓄熱体を用い、しみ出し、寸法変化、及び、付着性
を評価した。The heat storage elements of Examples 1 to 3 and the heat storage body of Comparative Example 1 were used to evaluate bleeding, dimensional change, and adhesion.
【００２８】しみ出しは次のようにして求めた。図２に
示す、８０℃と４０℃の温度条件の雰囲気中で１００サ
イクルの寒熱試験を行った。試験後、試験片を取り出
し、８０℃で周囲にしみ出した有機系蓄熱材を拭き取
り、減少した重量から溶融離脱率を計算した。 ・溶融離脱率（％）＝（重量減少量／初期の有機系蓄熱
材の含有重量）×１００ 寸法変化率は上記寒熱試験の前後における、試験片の各
辺の寸法を測定して変化率を計算した。 ・寸法変化率（％）＝（寒熱試験の前後における辺の寸
法の差／初期の辺の寸法）×１００ 付着性はそれぞれの試験片を２枚重ね、上記上記寒熱試
験を行い、試験片どうしの付着の有無を観察した。一部
でも発生したものは付着有りとした。The bleeding was determined as follows. A cold test of 100 cycles was performed in an atmosphere of temperature conditions of 80 ° C. and 40 ° C. shown in FIG. After the test, the test piece was taken out, the organic heat storage material exuding to the surroundings at 80 ° C. was wiped off, and the melt release rate was calculated from the reduced weight. Melt desorption rate (%) = (weight reduction amount / weight of initial organic heat storage material) x 100 The dimensional change rate is the rate of change measured by measuring the dimensions of each side of the test piece before and after the cold heat test. I calculated. -Dimensional change rate (%) = (difference of side dimension before and after cold heat test / initial side dimension) x 100 For adhesion, two test pieces are stacked and the above-mentioned cold test is performed to test piece The presence or absence of adherence was observed. If some of them were found to have adhered.
【００２９】結果は表１に示すとおり、実施例１〜３は
いずれも比較例１に比べて溶融離脱率、及び、寸法変化
率とも良好であり、且つ、付着が無かった。As shown in Table 1, all of Examples 1 to 3 had better melt release rate and dimensional change rate than Comparative Example 1, and there was no adhesion.
【００３０】[0030]
【表１】 [Table 1]
【００３１】実施例４ 結晶化度４０％未満の低結晶性ポリオレフィンとして、
結晶化度１０％のエチレン−プロピレン共重合体（三井
石油化学株式会社製：タフマーＰ０６８０、密度０．８
７ｇ／ｃｍ3 ）を２０重量％、結晶化度４０％以上の結
晶性ポリオレフィンとして、結晶化度７７％の高密度ポ
リエチレン（三菱油化株式会社製：ＢＺ５０Ｕ、密度
０．９５ｇ／ｃｍ3 ）を１０重量％、有機系蓄熱材とし
てパラフィン１４０品（日本精蝋株式会社製：１４０
Ｆ、融点６０℃）を７０重量％の配合比率で配合して成
形材料とした。この成形材料を１４０℃に加熱しながら
混練した溶融物を冷却し、切断し、厚さ１５ｍｍ、長さ
５０ｍｍ角の直方体の蓄熱体を作製した。この蓄熱体の
全表面を厚さ４ｍｍのポリプロピレン不織布（三菱油化
株式会社製：スーパーアタック）で覆い、温度１５０
℃、圧力０．１ｋｇ／ｃｍ 2 の条件で加熱し、蓄熱体の
表面に不織布を備えた蓄熱素子を得た。Example 4 As a low crystalline polyolefin having a crystallinity of less than 40%,
Ethylene-propylene copolymer with a crystallinity of 10% (Mitsui
Petrochemical Co., Ltd .: Toughmer P0680, density 0.8
7 g / cm320% by weight and a crystallinity of 40% or more.
As a crystalline polyolefin, a high-density polyolefin with a crystallinity of 77%
Polyethylene (Mitsubishi Petrochemical Co., Ltd .: BZ50U, density
0.95 g / cm3) 10% by weight as an organic heat storage material
140 paraffin (made by Nippon Seiro Co., Ltd .: 140
F, melting point 60 ° C) at a mixing ratio of 70% by weight.
Shaped material. While heating this molding material to 140 ° C
The kneaded melt is cooled and cut, thickness 15 mm, length
A rectangular parallelepiped heat storage body of 50 mm square was produced. Of this heat storage
4mm thick polypropylene non-woven fabric on all surfaces (Mitsubishi Yuka
Co., Ltd .: Super Attack), temperature 150
℃, pressure 0.1kg / cm 2Heating under the conditions of
A heat storage element having a nonwoven fabric on the surface was obtained.
【００３２】実施例５ 実施例４と同様に蓄熱体を作製した。樹脂フィルムとし
て、厚み２５μｍの２軸延伸ナイロンフィルムと厚み５
０μｍの無延伸ポリプロピレンフィルムからなるドライ
ラミネート仕様の複合フィルムを用いた。上記蓄熱体を
この複合フィルムで覆い、周囲にヒートシールを施して
密封し、蓄熱体の表面に樹脂フィルムを備えた蓄熱素子
を得た。Example 5 A heat storage material was prepared in the same manner as in Example 4. As a resin film, a biaxially stretched nylon film with a thickness of 25 μm and a thickness of 5
A dry laminate specification composite film made of a 0 μm unstretched polypropylene film was used. The heat storage body was covered with this composite film, and the periphery was heat-sealed to seal the heat storage body, thereby obtaining a heat storage element having a resin film on the surface of the heat storage body.
【００３３】比較例２ 実施例４と同様にして作製した、厚さ１５ｍｍ、長さ５
０ｍｍ角の直方体の蓄熱体を用いた。Comparative Example 2 Produced in the same manner as in Example 4, thickness 15 mm, length 5
A rectangular parallelepiped heat storage body of 0 mm square was used.
【００３４】上記実施例４、５の蓄熱素子、及び、比較
例２の蓄熱体を用い、上述と同様の条件でしみ出し、寸
法変化、及び、付着性を評価した。結果は表２に示すと
おり、実施例４、５はいずれも比較例２に比べて溶融離
脱率、及び、寸法変化率とも良好であり、且つ、付着が
無かった。Using the heat storage elements of Examples 4 and 5 and the heat storage body of Comparative Example 2, exudation, dimensional change, and adhesion were evaluated under the same conditions as described above. As shown in Table 2, in each of Examples 4 and 5, the melt release rate and the dimensional change rate were better than those of Comparative Example 2, and there was no adhesion.
【００３５】[0035]
【表２】 [Table 2]
【００３６】[0036]
【発明の効果】本発明の請求項１に係る蓄熱素子は、蓄
熱体１の表面に耐油性の樹脂フィルム２を備えるので、
樹脂フィルム２が相の転移により液体になった有機系蓄
熱材の流出を防ぐため、有機系蓄熱材のしみだしを低減
し、且つ、使用中の寸法変化率が小さく、変形を生じな
い。さらに、複数の蓄熱素子を用いても、蓄熱素子どう
しが付着することがない。Since the heat storage element according to claim 1 of the present invention is provided with the oil-resistant resin film 2 on the surface of the heat storage body 1,
Since the resin film 2 is prevented from flowing out of the organic heat storage material which has become liquid due to the phase transition, the exudation of the organic heat storage material is reduced, the dimensional change rate during use is small, and no deformation occurs. Further, even if a plurality of heat storage elements are used, the heat storage elements do not adhere to each other.
【００３７】本発明の請求項２に係る蓄熱素子は、蓄熱
体１の表面に吸油性を有する不織布３を備えるので、不
織布３の繊維間に、相の転移により液体になった有機系
蓄熱材を取り込み、蓄熱素子からの流出を防ぐため、有
機系蓄熱材のしみだしを低減し、且つ、使用中の寸法変
化率が小さく、変形を生じない。さらに、複数の蓄熱素
子を用いても、蓄熱素子どうしが付着することがない。Since the heat storage element according to claim 2 of the present invention is provided with the non-woven fabric 3 having an oil absorbing property on the surface of the heat storage body 1, the organic heat storage material becomes liquid due to the phase transition between the fibers of the non-woven fabric 3. In order to prevent the organic heat storage material from seeping out, the organic heat storage material is prevented from seeping out, the dimensional change rate during use is small, and no deformation occurs. Further, even if a plurality of heat storage elements are used, the heat storage elements do not adhere to each other.
【図１】（ａ）は請求項１に係る蓄熱素子の一例を示し
た説明図であり、（ｂ）は請求項２に係る蓄熱素子の一
例を示した説明図である。1A is an explanatory diagram showing an example of a heat storage element according to claim 1, and FIG. 1B is an explanatory diagram showing an example of a heat storage element according to claim 2;
【図２】寒熱試験の条件の説明図である。FIG. 2 is an explanatory diagram of conditions of a cold heat test.
１ 蓄熱体 ２ 樹脂フィルム ３ 不織布 1 Heat storage body 2 Resin film 3 Non-woven fabric
───────────────────────────────────────────────────── フロントページの続き (72)発明者 菅原 亮 大阪府門真市大字門真1048番地松下電工株 式会社内 (72)発明者 工藤 均 大阪府門真市大字門真1048番地松下電工株 式会社内 (72)発明者 薮ノ内 伸晃 大阪府門真市大字門真1048番地松下電工株 式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryo Sugawara 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Inventor, Hitoshi Kudo, 1048, Kadoma, Kadoma City, Osaka 72) Inventor Nobuaki Yabutouchi 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.
Claims (4)
フィンからなる基質と、この基質に担持された、固相−
液相間を可逆的に相転移する有機系蓄熱材を構成材料と
する蓄熱体（１）、及び、この蓄熱体（１）の表面に耐
油性の樹脂フィルム（２）を備えることを特徴とする蓄
熱素子。1. A substrate comprising a low crystalline polyolefin having a crystallinity of less than 40%, and a solid phase-supported on the substrate.
A heat storage body (1) comprising an organic heat storage material that reversibly undergoes a phase transition between liquid phases as a constituent material, and an oil resistant resin film (2) on the surface of the heat storage body (1), A heat storage element that does.
フィンからなる基質と、この基質に担持された、固相−
液相間を可逆的に相転移する有機系蓄熱材を構成材料と
する蓄熱体（１）、及び、この蓄熱体（１）の表面に吸
油性を有する不織布（３）を備えることを特徴とする蓄
熱素子。2. A substrate composed of a low crystalline polyolefin having a crystallinity of less than 40%, and a solid phase-supported on this substrate.
A heat storage body (1) comprising an organic heat storage material that reversibly undergoes a phase transition between liquid phases as a constituent material, and a non-woven fabric (3) having an oil absorbing property on the surface of the heat storage body (1). A heat storage element that does.
の結晶性ポリオレフィンを構成材料とすることを特徴と
する請求項１又は請求項２記載の蓄熱素子。3. The heat storage element according to claim 1, wherein the substrate further comprises a crystalline polyolefin having a crystallinity of 40% or more as a constituent material.
ボン、結晶性脂肪酸、及び結晶性脂肪酸エステルから選
ばれる少なくとも１種であることを特徴とする請求項１
乃至請求項３いずれか記載の蓄熱素子。4. The organic heat storage material is at least one selected from crystalline hydrocarbons, crystalline fatty acids, and crystalline fatty acid esters.
The heat storage element according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6303457A JPH08157811A (en) | 1994-12-07 | 1994-12-07 | Thermal storage element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6303457A JPH08157811A (en) | 1994-12-07 | 1994-12-07 | Thermal storage element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08157811A true JPH08157811A (en) | 1996-06-18 |
Family
ID=17921214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6303457A Withdrawn JPH08157811A (en) | 1994-12-07 | 1994-12-07 | Thermal storage element |
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| Country | Link |
|---|---|
| JP (1) | JPH08157811A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002060740A (en) * | 2000-08-22 | 2002-02-26 | Koden:Kk | Heat storage material and thermal insulation using the same |
| JP2017028039A (en) * | 2015-07-21 | 2017-02-02 | キヤノン株式会社 | Electronic apparatus and imaging device |
-
1994
- 1994-12-07 JP JP6303457A patent/JPH08157811A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002060740A (en) * | 2000-08-22 | 2002-02-26 | Koden:Kk | Heat storage material and thermal insulation using the same |
| JP2017028039A (en) * | 2015-07-21 | 2017-02-02 | キヤノン株式会社 | Electronic apparatus and imaging device |
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