JP2001178805A - Insulating material made of inorganic fiber and method for producing the same - Google Patents
Insulating material made of inorganic fiber and method for producing the sameInfo
- Publication number
- JP2001178805A JP2001178805A JP37021299A JP37021299A JP2001178805A JP 2001178805 A JP2001178805 A JP 2001178805A JP 37021299 A JP37021299 A JP 37021299A JP 37021299 A JP37021299 A JP 37021299A JP 2001178805 A JP2001178805 A JP 2001178805A
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- JP
- Japan
- Prior art keywords
- formaldehyde
- insulating material
- inorganic fiber
- heat insulating
- group
- 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.)
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- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Reinforced Plastic Materials (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
(57)【要約】
【課題】 ホルムアルデヒドの放散が少なく、かつ耐水
性を従来品と同様に維持した無機繊維製断熱材およびそ
の製造方法を提供する。
【解決手段】 無機繊維にホルムアルデヒド系熱硬化性
樹脂を主成分とするバインダーを添加してマット状とし
たフェルトを加熱硬化させた後に、ホルムアルデヒドと
反応して固定化可能な物質であるホルムアルデヒド捕捉
剤を添加して機繊維製断熱材を得る。PROBLEM TO BE SOLVED: To provide a heat insulating material made of inorganic fiber, which emits little formaldehyde and maintains water resistance similarly to a conventional product, and a method for producing the same. SOLUTION: A formaldehyde scavenger, which is a substance which can be fixed by reacting with formaldehyde after heating and curing a mat-shaped felt by adding a binder mainly composed of a formaldehyde-based thermosetting resin to inorganic fibers, followed by curing. To obtain a heat insulating material made of machine fiber.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は無機繊維製断熱材お
よびその製造方法に関し、より具体的にはホルムアルデ
ヒドの放散が低い無機繊維製断熱材およびその製造方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material made of inorganic fiber and a method for producing the same, and more particularly, to a heat insulating material made of inorganic fiber having low emission of formaldehyde and a method for producing the same.
【０００２】[0002]
【従来の技術】建築物の断熱材や工場配管等の保温材と
して、断熱・保温効果の高いガラスウールやロックウー
ル等からなる無機繊維製断熱材が幅広く使用されてい
る。そして、無機繊維製断熱材を成形加工するためのバ
インダーとして、フェノール樹脂等のホルムアルデヒド
系熱硬化性樹脂を用いて、無機繊維製断熱材を製造する
方法が一般的である。このようなフェノール樹脂は、通
常、アルカリ下でフェノールとホルムアルデヒドとを反
応させ、これを加熱して硬化させることにより、不溶不
融性の３次元網状樹脂として得られる。しかしながら、
一般に、初期の製造段階でホルムアルデヒドを過剰に必
要とするため、樹脂硬化後においても未反応のホルムア
ルデヒドが残留するほか、硬化中の縮合反応においても
ホルムアルデヒドが生じることがある。また、硬化終了
後にも湿気等による加水分解によりホルムアルデヒドが
生じることもあり、これらのホルムアルデヒドが断熱材
表面から放出され、ホルマリン臭として生活環境、作業
環境を悪化させるという問題があった。2. Description of the Related Art Insulation materials made of inorganic fibers, such as glass wool and rock wool, which have high heat insulation and heat insulation effects, are widely used as heat insulation materials for buildings and pipes for factory piping. In general, a method of manufacturing an inorganic fiber heat insulating material using a formaldehyde-based thermosetting resin such as a phenol resin as a binder for molding and processing the inorganic fiber heat insulating material is used. Such a phenolic resin is usually obtained as an insoluble and infusible three-dimensional network resin by reacting phenol with formaldehyde under an alkali and heating and curing the phenol and formaldehyde. However,
Generally, an excessive amount of formaldehyde is required in the initial production stage, so that unreacted formaldehyde remains even after the resin is cured, and formaldehyde may be generated in the condensation reaction during the curing. Further, even after the curing is completed, formaldehyde may be generated by hydrolysis due to moisture or the like, and these formaldehydes are released from the surface of the heat insulating material, and there is a problem that the living environment and working environment are deteriorated as formalin odor.
【０００３】そのため、ホルムアルデヒドを用いずに合
成される樹脂を添加する無機繊維製断熱材も提案されて
いるが、その数は少なく、あっても価格、特性を満足す
るものはない。例えば、フラン樹脂やウレタン樹脂等の
常温硬化性樹脂を無機繊維系断熱材に添加する方法が特
開平６−１３６１４１号公報に開示されているが、一般
的に硬化用触媒を用いないと十分な硬化性能が得られに
くい場合が多く、価格もフェノール樹脂より高価であ
る。また、アクリル樹脂やポリビニルアルコール等の熱
可塑性樹脂を用いる場合は、得られる無機繊維製断熱材
の強度、耐水性が低く実用性に欠ける傾向がある。[0003] Therefore, an inorganic fiber heat insulating material to which a resin synthesized without using formaldehyde is added has been proposed, but the number thereof is small, and even if it does not satisfy the price and characteristics. For example, JP-A-6-136141 discloses a method of adding a room temperature curable resin such as a furan resin or a urethane resin to an inorganic fiber-based heat insulating material. In many cases, hardening performance is difficult to obtain, and the price is higher than phenol resin. When a thermoplastic resin such as an acrylic resin or polyvinyl alcohol is used, the obtained inorganic fiber heat insulating material tends to have low strength and water resistance and lack practicality.
【０００４】[0004]
【発明が解決しようとする課題】本発明は前記問題点に
鑑みて成されたものであり、その目的は、ホルムアルデ
ヒドの放散が少なく、かつ耐水性を従来品と同様に維持
した無機繊維製断熱材およびその製造方法を提供するこ
とである。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a heat insulating material made of inorganic fiber which has a low formaldehyde emission and maintains water resistance in the same manner as conventional products. It is to provide a material and a method for producing the same.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、鋭意検討
の結果、無機繊維にホルムアルデヒド系熱硬化性樹脂を
主成分とするバインダーを添加してマット状に成形した
無機繊維製断熱材に、ホルムアルデヒド捕捉剤を添加す
ることにより、無機繊維製断熱材からのホルムアルデヒ
ドの放散を抑制し、かつ無機繊維製断熱材の耐水性を維
持できることを見いだした。すなわち、本発明の技術的
構成および作用効果は以下の通りである。Means for Solving the Problems As a result of diligent studies, the present inventors have found that an inorganic fiber heat insulating material formed into a mat by adding a binder containing a formaldehyde-based thermosetting resin as a main component to the inorganic fiber. It has been found that by adding a formaldehyde scavenger, the emission of formaldehyde from the inorganic fiber insulation can be suppressed and the water resistance of the inorganic fiber insulation can be maintained. That is, the technical configuration and operation and effect of the present invention are as follows.
【０００６】本発明に係る無機繊維製断熱材は、無機繊
維にホルムアルデヒド系熱硬化性樹脂を主成分とするバ
インダーを添加してマット状に成形した無機繊維製断熱
材において、ホルムアルデヒドと反応して固定化可能な
物質であるホルムアルデヒド捕捉剤が添加されたことを
特徴とする。従って、従来の一般的な無機繊維製断熱材
と同様にホルムアルデヒド系熱硬化性樹脂をバインダー
に用いて成形したことにより、無機繊維製断熱材の耐水
性は従来と同等に維持されるとともに、ホルムアルデヒ
ド系熱硬化性樹脂中のホルムアルデヒドがホルムアルデ
ヒド捕捉剤に捕捉されるので、耐水性を維持しつつ、ホ
ルムアルデヒドの放散が少ない無機繊維製断熱材とする
ことができる。The inorganic fiber heat insulating material according to the present invention reacts with formaldehyde in an inorganic fiber heat insulating material obtained by adding a binder containing a formaldehyde-based thermosetting resin as a main component to the inorganic fiber and forming the mat into a mat shape. A formaldehyde scavenger, which is a substance that can be immobilized, is added. Therefore, by molding using a formaldehyde-based thermosetting resin as a binder in the same manner as a conventional general inorganic fiber insulation material, the water resistance of the inorganic fiber insulation material is maintained at the same level as before, and the formaldehyde Since the formaldehyde in the system thermosetting resin is captured by the formaldehyde capturing agent, it is possible to obtain an inorganic fiber heat insulating material that emits less formaldehyde while maintaining water resistance.
【０００７】また、本発明に係る無機繊維製断熱材の製
造方法は、無機繊維にホルムアルデヒド系熱硬化性樹脂
を主成分とするバインダーを添加してマット状としたフ
ェルトを加熱硬化させた後に、ホルムアルデヒドと反応
して固定化可能な物質であるホルムアルデヒド捕捉剤を
添加することを特徴とする。従って、従来と同様の方法
により無機繊維製断熱材を作製し、これにホルムアルデ
ヒド捕捉剤を塗布等の簡便な方法により添加するだけで
よいため、特別な装置や工程を要せず、製造コストの上
昇を極力抑えつつ、耐水性が維持され、ホルムアルデヒ
ドの放散が少ない無機繊維製断熱材が得られる。Further, the method for producing a heat insulating material made of inorganic fiber according to the present invention is characterized in that a binder made mainly of a formaldehyde-based thermosetting resin is added to inorganic fibers, and a mat-shaped felt is heated and cured. It is characterized by adding a formaldehyde scavenger which is a substance which can react with formaldehyde and be immobilized. Therefore, it is only necessary to prepare a heat insulating material made of inorganic fiber by the same method as in the past, and simply add a formaldehyde scavenger to the heat insulating material by a simple method such as coating. An inorganic fiber heat insulating material that maintains water resistance and minimizes the emission of formaldehyde while minimizing the rise is obtained.
【０００８】[0008]
【発明の実施の形態】本発明に係る実施の形態を以下に
示すが、本発明は以下の実施の形態に限定されるもので
はなく、前記本発明の特徴とするところの範囲内で適宜
変更できるものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below. However, the present invention is not limited to the following embodiments, and may be appropriately changed within the scope of the features of the present invention. You can do it.
【０００９】本発明に係る無機繊維製断熱材は、無機繊
維にホルムアルデヒド系熱硬化性樹脂を主成分とするバ
インダーを添加してマット状としたフェルトを加熱硬化
させた後に、ホルムアルデヒドと反応して固定化可能な
物質であるホルムアルデヒド捕捉剤を添加することによ
って得られる。ホルムアルデヒド捕捉剤の無機繊維製断
熱材への添加方法は、水溶液を噴霧する方法、粉末をエ
アロゾルとして噴霧する方法、含浸法およびコーティン
グ法等の公知の手法を任意に用いることができる。これ
により、ホルムアルデヒド捕捉剤は無機繊維製断熱材の
表層部に高密度に存在するものと考えられ、内部のホル
ムアルデヒド系熱硬化性樹脂のホルムアルデヒドがホル
ムアルデヒド捕捉剤に効率良く捕捉されるので、無機繊
維製断熱材からのホルムアルデヒドの放散を極めて少な
くすることができる。The heat insulating material made of inorganic fiber according to the present invention reacts with formaldehyde after heat-curing a mat-shaped felt by adding a binder mainly composed of a formaldehyde-based thermosetting resin to the inorganic fiber. It is obtained by adding a formaldehyde scavenger which is a substance which can be immobilized. A known method such as a method of spraying an aqueous solution, a method of spraying a powder as an aerosol, an impregnation method and a coating method can be arbitrarily used as a method of adding the formaldehyde scavenger to the inorganic fiber insulation. As a result, the formaldehyde scavenger is considered to exist at a high density on the surface layer of the inorganic fiber heat insulating material, and the formaldehyde of the internal formaldehyde-based thermosetting resin is efficiently caught by the formaldehyde scavenger. Emission of formaldehyde from the heat insulating material can be extremely reduced.
【００１０】無機繊維としては、ガラスウールおよびロ
ックウール等を好適に挙げることができる。しかしなが
ら、無機繊維は用途に応じて任意に選択できるものであ
り、特に限定されない。As the inorganic fibers, glass wool, rock wool and the like can be preferably mentioned. However, the inorganic fibers can be arbitrarily selected according to the application, and are not particularly limited.
【００１１】バインダーは、ホルムアルデヒド系熱硬化
性樹脂を主成分とする。ホルムアルデヒド系熱硬化性樹
脂の具体例としては、同系の樹脂の中で最も耐水性に優
れるフェノール樹脂を好適に挙げることができる。フェ
ノール樹脂は、フェノール、レゾルシノール、クレゾー
ル、キシレノール等のフェノール類の少なくとも一種類
と、ホルムアルデヒド等のアルデヒド類の少なくとも一
種類との縮合により、公知の合成方法に従って得られ
る。また、フェノール樹脂は、尿素等で変性されても良
い。The binder is mainly composed of a formaldehyde-based thermosetting resin. As a specific example of the formaldehyde-based thermosetting resin, a phenol resin having the highest water resistance among the resins of the same family can be suitably exemplified. The phenol resin is obtained according to a known synthesis method by condensation of at least one kind of phenols such as phenol, resorcinol, cresol, and xylenol with at least one kind of aldehydes such as formaldehyde. Further, the phenol resin may be modified with urea or the like.
【００１２】また、バインダーは、必要に応じて、発水
剤、難燃剤、防虫剤、防腐剤等の添加剤を含有すること
ができる。Further, the binder can contain additives such as a water-producing agent, a flame retardant, an insect repellent, and a preservative, if necessary.
【００１３】ホルムアルデヒド捕捉剤は、ホルムアルデ
ヒドと反応して固定化可能な物質であれば特に限定され
ないが、ヒドラジド基、アミノ基またはイミノ基を含む
化合物、および尿素の誘導体を好適に挙げることができ
る。The formaldehyde scavenger is not particularly limited as long as it is a substance that can be fixed by reacting with formaldehyde. Preferred examples thereof include a compound containing a hydrazide group, an amino group or an imino group, and a urea derivative.
【００１４】ヒドラジド基を含む化合物としては、１つ
のヒドラジド基を有するモノヒドラジド化合物、２つの
ヒドラジド基を有するジヒドラジド化合物、３つ以上の
ヒドラジド基を有する多価ヒドラジド化合物等を挙げる
ことができる。Examples of the compound containing a hydrazide group include a monohydrazide compound having one hydrazide group, a dihydrazide compound having two hydrazide groups, and a polyvalent hydrazide compound having three or more hydrazide groups.
【００１５】モノヒドラジド化合物とは、例えば、ＲＣ
ＯＮＨＮＨ2で表される化合物であり、Ｒとしては、例
えば、メチル基，エチル基，ｎ−プロピル基，イソプロ
ピル基，ｎ−ブチル基，イソブチル基，ｓｅｃ−ブチル
基，ｔ−ブチル基等のアルキル基またはフェニル基，ビ
フェニル基，ナフチル基等のアリール基を挙げることが
できる。また、これらのアルキル基およびアリール基の
水素原子は、水酸基またはハロゲン原子等で置換されて
も良く、またアリール基においては、メチル基，エチル
基，ｎ−プロピル基などのアルキル基を置換基として有
するものでも構わない。このようなモノヒドラジド化合
物の具体例としては、ホルムヒドラジド、アセトヒドラ
ジド、プロピオン酸ヒドラジド、ラウリン酸ヒドラジ
ド、ステアリン酸ヒドラジド、サリチル酸ヒドラジド、
安息香酸ヒドラジド、ｐ−ヒドロキシ安息香酸ヒドラジ
ド、ナフトエ酸ヒドラジド等を挙げることができる。The monohydrazide compound is, for example, RC
A compound represented by ONHNH 2 , wherein R is, for example, an alkyl such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, etc. And aryl groups such as a phenyl group, a biphenyl group, and a naphthyl group. The hydrogen atom of these alkyl groups and aryl groups may be substituted with a hydroxyl group or a halogen atom. In the aryl group, an alkyl group such as a methyl group, an ethyl group, or an n-propyl group is used as a substituent. You may have one. Specific examples of such a monohydrazide compound include form hydrazide, acetohydrazide, propionic hydrazide, lauric hydrazide, stearic hydrazide, salicylic hydrazide,
Benzoic acid hydrazide, p-hydroxybenzoic acid hydrazide, naphthoic acid hydrazide and the like can be mentioned.
【００１６】ジヒドラジド化合物とは、例えば、Ｈ2Ｎ
ＨＮ−Ｘ−ＮＨＮＨ2（Ｘは、−ＣＯ−または−ＣＯ−
Ｙ−ＣＯ−を示す）で表される化合物であり、Ｙとして
は、前記したＲで示される基の水素原子を結合手に代え
ることにより２価の基としたものを好適に挙げることが
できる。すなわち、Ｙの具体例としては、メチレン基，
エチレン基，トリメチレン基等のアルキレン基またはフ
ェニレン基，ビフェニレン基，ナフチレン基等のアリー
レン基を挙げることができる。また、これらのアルキレ
ン基およびアリーレン基の水素原子は、水酸基またはハ
ロゲン原子等で置換されても良く、またアリーレン基に
おいては、メチル基，エチル基，ｎ−プロピル基などの
アルキル基を置換基として有するものでも構わない。こ
のようなジヒドラジド化合物の具体例としては、シュウ
酸ジヒドラジド、マロン酸ジヒドラジド、コハク酸ジヒ
ドラジド、アジピン酸ジヒドラジド、セバシン酸ジヒド
ラジド、マレイン酸ジヒドラジド、フマル酸ジヒドラジ
ド、ジグリコール酸酸ジヒドラジド、酒石酸ジヒドラジ
ド、リンゴ酸ジヒドラジド、イソフタル酸ジヒドラジ
ド、テレフタル酸ジヒドラジド等を挙げることができ
る。The dihydrazide compound is, for example, H 2 N
HN-X-NHNH 2 (X is -CO- or -CO-
Y-CO-), wherein Y is preferably a divalent group obtained by replacing a hydrogen atom of the group represented by R with a bond. . That is, specific examples of Y include a methylene group,
Examples thereof include an alkylene group such as an ethylene group and a trimethylene group, and an arylene group such as a phenylene group, a biphenylene group, and a naphthylene group. Further, the hydrogen atom of the alkylene group and the arylene group may be substituted with a hydroxyl group, a halogen atom or the like. You may have one. Specific examples of such a dihydrazide compound include oxalic acid dihydrazide, malonic acid dihydrazide, succinic acid dihydrazide, adipic acid dihydrazide, sebacic acid dihydrazide, maleic acid dihydrazide, fumaric acid dihydrazide, diglycolic acid dihydrazide, and tartaric acid dihydrazide. Examples thereof include dihydrazide, isophthalic acid dihydrazide, and terephthalic acid dihydrazide.
【００１７】また、多価ヒドラジド化合物としては、ク
エン酸トリヒドラジド、ピロメリット酸トリヒドラジ
ド、１，２，４−ベンゼントリヒドラジド、ニトリロ酢
酸トリヒドラジド、シクロヘキサントリカルボン酸トリ
ヒドラジド等のトリヒドラジド化合物、エチレンジアミ
ン四酢酸テトラヒドラジド、１，４，５，８−ナフトエ
酸テトラヒドラジド等のテトラヒドラジドを挙げること
ができる。また重合基を有するヒドラジド化合物をモノ
マー成分とするポリヒドラジド化合物であっても良く、
例えば、ポリアクリル酸ヒドラジドを挙げることができ
る。The polyhydrazide compounds include trihydrazide compounds such as trihydrazide citrate, trihydrazide pyromellitic acid, 1,2,4-benzenetrihydrazide, trihydrazide nitriloacetate and trihydrazide cyclohexanetricarboxylate. Examples thereof include tetrahydrazides such as tetraacetic acid tetrahydrazide and 1,4,5,8-naphthoic acid tetrahydrazide. Further, a polyhydrazide compound having a hydrazide compound having a polymerizable group as a monomer component may be used,
For example, polyacrylic hydrazide can be mentioned.
【００１８】アミノ基またはイミノ基を含む化合物とし
ては、サクシンイミド、フタルイミド、ジシアンジアミ
ド、メラミンおよびベンゾグアナミン等を挙げることが
できる。Examples of the compound containing an amino group or an imino group include succinimide, phthalimide, dicyandiamide, melamine, and benzoguanamine.
【００１９】尿素の誘導体としては、エチレン尿素、
１，３−ジメチル尿素およびチオ尿素等を挙げることが
できる。Derivatives of urea include ethylene urea,
Examples thereof include 1,3-dimethylurea and thiourea.
【００２０】上記に挙げたホルムアルデヒド捕捉剤の中
では、特に捕捉剤使用量に対する捕捉効果等の観点か
ら、アジピン酸ジヒドラジド、サクシンイミドおよびフ
タルイミド、エチレン尿素、１，３−ジメチル尿素が好
ましい。Among the above-mentioned formaldehyde scavengers, adipic dihydrazide, succinimide and phthalimide, ethylene urea, and 1,3-dimethyl urea are particularly preferable from the viewpoint of the scavenging effect with respect to the amount of the scavenger used.
【００２１】また、ホルムアルデヒド捕捉剤は、ホルム
アルデヒド系熱硬化性樹脂の全重量に対して３重量％〜
５０重量％含有されるのが好ましく、特に好ましくは５
重量％〜２０重量％である。３重量％より低いとホルム
アルデヒド放散の抑制効果が小さく、５０重量％より高
いと無機繊維製断熱材の強度および耐水性が低くなる傾
向にある。ホルムアルデヒド捕捉剤は、複数種を混合し
て使用してもよい。The formaldehyde scavenger is used in an amount of from 3% by weight to the total weight of the formaldehyde-based thermosetting resin.
The content is preferably 50% by weight, particularly preferably 5% by weight.
% To 20% by weight. If it is lower than 3% by weight, the effect of suppressing formaldehyde emission is small, and if it is higher than 50% by weight, the strength and water resistance of the inorganic fiber heat insulating material tend to be low. A plurality of formaldehyde scavengers may be used as a mixture.
【００２２】さらに、本発明に係る無機繊維製断熱材
は、必要に応じて、充填剤、顔料等の添加剤を含んでも
良い。Further, the inorganic fiber heat insulating material according to the present invention may contain additives such as a filler and a pigment, if necessary.
【００２３】なお、ホルムアルデヒド捕捉剤として、バ
インダーの硬化条件（特に、硬化温度）でホルムアルデ
ヒドとの反応性の低下や分解を引き起こさない化合物
（例えばエチレン尿素）を使用する場合には、バインダ
ーとホルムアルデヒド捕捉剤とを混合し、この混合物を
無機繊維に添加した後、マット状としたフェルトを加熱
硬化して無機繊維製断熱材を成形することもできる。こ
の場合、捕捉剤はバインダーの表層部よりも内部に多く
存在する事になるが、バインダーは、無機繊維製断熱材
表面に、非常に薄い膜状に存在するため、ホルムアルデ
ヒド捕捉剤はこの膜表面に存在する確率が大きくなるも
のと考えられる。従って、バインダー膜中のホルムアル
デヒドは直近のホルムアルデヒド捕捉剤により確実に捕
捉される。また、仮に捕捉されなかったとしても、他の
バインダー膜の表面に存在するホルムアルデヒド捕捉剤
と接触する可能性が高く、無機繊維製断熱材からのホル
ムアルデヒドの放散を極めて低く抑えることができる。When a compound (for example, ethylene urea) which does not cause a decrease in the reactivity with formaldehyde or the decomposition thereof under the curing conditions of the binder (especially the curing temperature) is used as the formaldehyde scavenger, the binder and the formaldehyde scavenger are used. After adding the mixture to the inorganic fibers, the mat-shaped felt is heat-cured to form an inorganic fiber heat insulating material. In this case, the trapping agent is present more inside the surface layer of the binder, but the binder is present in a very thin film on the surface of the inorganic fiber insulation material. Is likely to increase. Therefore, formaldehyde in the binder film is reliably captured by the nearest formaldehyde capturing agent. Further, even if not trapped, there is a high possibility of contact with a formaldehyde scavenger existing on the surface of another binder film, and the emission of formaldehyde from the inorganic fiber heat insulating material can be suppressed to an extremely low level.
【００２４】[0024]
【実施例】従来の無機繊維製断熱材を作製する手法に従
い尿素変性フェノール樹脂を用いて作製したマット（樹
脂の硬化温度：210〜270℃）に、ホルムアルデヒド捕捉
剤を表１の添加量で噴霧することにより、実施例１〜１
１および比較例１〜４の無機繊維断熱材を作製した。な
お、表１中のホルムアルデヒド捕捉剤において、“水溶
液”とはホルムアルデヒド捕捉剤水溶液による噴霧を意
味し、“粉末”とはホルムアルデヒド捕捉剤をエアロゾ
ルとした噴霧を意味する。また、添加量の数値は、ホル
ムアルデヒド系熱硬化性樹脂に対するホルムアルデヒド
捕捉剤の含有量を百分率で表したものである。EXAMPLE A formaldehyde scavenger was sprayed onto a mat (resin curing temperature: 210 to 270 ° C.) prepared using a urea-modified phenolic resin in accordance with a conventional method for preparing a heat insulating material made of inorganic fiber, in the amount indicated in Table 1. By doing, Examples 1-1
The inorganic fiber heat insulating materials of No. 1 and Comparative Examples 1 to 4 were produced. In the formaldehyde scavenger in Table 1, "aqueous solution" means spraying with an aqueous solution of formaldehyde scavenger, and "powder" means spraying using the formaldehyde scavenger as an aerosol. In addition, the numerical value of the addition amount is a percentage of the content of the formaldehyde scavenger with respect to the formaldehyde-based thermosetting resin.
【００２５】以上のようにして作製した無機繊維製断熱
材のホルムアルデヒド放散量の測定をJIS A 5908に準
じて行った。尚、放散温度は25℃とした。表１に結果を
示す。また、表中の低減率は低減率［％］＝100×（A−
B）／AA：捕捉剤を添加しない場合のホルムアルデヒド
放散量［mg／L］B：捕捉剤を添加した場合のホルムアル
デヒド放散量［mg／L］で算出した。The emission of formaldehyde from the inorganic fiber insulation material prepared as described above was measured according to JIS A 5908. The emission temperature was 25 ° C. Table 1 shows the results. The reduction rate in the table is the reduction rate [%] = 100 × (A−
B) / AA: The amount of formaldehyde emission when no scavenger was added [mg / L] B: The amount of formaldehyde emission when the scavenger was added [mg / L].
【００２６】[0026]
【表１】 [Table 1]
【００２７】表１に示すように、ホルムアルデヒド捕捉
剤を噴霧した実施例１〜１１の無機繊維製断熱材からの
ホルムアルデヒドの放散量は、ホルムアルデヒド捕捉剤
を噴霧しなかった比較例１の無機繊維製断熱材と比べて
少ないものとなった。また、吸水による強度低下率にお
いても、ホルムアルデヒド捕捉剤の添加量が３重量％〜
５０重量％の範囲に入る実施例においては、ホルムアル
デヒド捕捉剤の添加量が３％未満または５０重量％を超
える比較例２、３及び４の無機繊維製断熱材と比較し
て、その値はホルムアルデヒド捕捉剤を添加しない場合
と同程度で、高い耐水性を示した。As shown in Table 1, the amount of formaldehyde emitted from the inorganic fiber insulation materials of Examples 1 to 11 sprayed with the formaldehyde scavenger was the same as that of Comparative Example 1 without spraying the formaldehyde scavenger. It was less than insulation. Also, in the strength reduction rate due to water absorption, the amount of the formaldehyde scavenger added is 3 wt%
In the examples that fall within the range of 50% by weight, the value of formaldehyde scavenger is less than 3% or more than 50% by weight. High water resistance was shown, comparable to the case where no scavenger was added.
【００２８】また、尿素変性フェノール樹脂とエチレン
尿素とを添加した混合物を、無機繊維製断熱材の製綿時
に噴霧して無機繊維製断熱材を作製した（実施例１２お
よび１３）。無機繊維製断熱材のホルムアルデヒド放散
量を前記した方法と同様に測定した。結果を表２に示
す。Further, a mixture obtained by adding a urea-modified phenol resin and ethylene urea was sprayed at the time of cotton production of an inorganic fiber heat insulating material to produce an inorganic fiber heat insulating material (Examples 12 and 13). The formaldehyde emission amount of the inorganic fiber insulation was measured in the same manner as described above. Table 2 shows the results.
【００２９】[0029]
【表２】 [Table 2]
【００３０】表２に示すように、実施例１２および１３
の無機繊維製断熱材からのホルムアルデヒドの放散量
は、実施例１〜１１と同様に少ないものとなった。ま
た、吸水による強度低下率においても、ホルムアルデヒ
ド捕捉剤の添加量が３重量％〜５０重量％の範囲に入る
実施例においては、ホルムアルデヒド捕捉剤の添加量が
５０重量％を超える比較例５の無機繊維製断熱材と比較
して、その値はホルムアルデヒド捕捉剤を添加しない場
合と同程度で、高い耐水性を示した。As shown in Table 2, Examples 12 and 13
As in Examples 1 to 11, the amount of formaldehyde emitted from the inorganic fiber insulation material was small. Also, in the strength reduction rate due to water absorption, in the examples in which the addition amount of the formaldehyde scavenger falls within the range of 3% by weight to 50% by weight, the inorganic amount of Comparative Example 5 in which the addition amount of the formaldehyde scavenger exceeds 50% by weight. Compared with the fiber heat insulating material, the value was almost the same as when no formaldehyde scavenger was added, indicating high water resistance.
【００３１】[0031]
【発明の効果】本発明に係る無機繊維製断熱材によれ
ば、ホルムアルデヒドの放散が少なく、かつ耐水性を維
持した無機繊維製断熱材が提供される。According to the heat insulating material made of inorganic fiber according to the present invention, there is provided a heat insulating material made of inorganic fiber which emits little formaldehyde and maintains water resistance.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｅ０４Ｂ 1/92 Ｅ０４Ｂ 1/92 // Ｂ０１Ｊ 20/22 Ｂ０１Ｊ 20/22 Ａ Ｆターム(参考） 2E001 DE01 DH13 DH25 GA07 GA28 GA29 GA47 GA85 HA32 HA33 HD11 4C080 AA06 BB02 BB04 CC02 CC12 HH05 JJ03 KK08 LL03 MM18 NN01 4F072 AA04 AA07 AB08 AB09 AD13 AE14 AF16 AF27 AF28 AF29 AF31 AL17 4G066 AA71C AA72C AB09B AC25D CA52 FA12 FA15 FA21 4J002 CC041 CC051 CC071 DJ027 DL007 EQ026 ER026 ET006 ET016 EU026 EU186 EV126 FA047 FD010 FD090 FD130 FD180 FD206 GL00 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) E04B 1/92 E04B 1/92 // B01J 20/22 B01J 20/22 A F-term (Reference) 2E001 DE01 DH13 DH25 GA07 GA28 GA29 GA47 GA85 HA32 HA33 HD11 4C080 AA06 BB02 BB04 CC02 CC12 HH05 JJ03 KK08 LL03 MM18 NN01 4F072 AA04 AA07 AB08 AB09 AD13 AE14 AF16 AF27 AF28 AF29 AF31 AL17 4G066 AA71 CC02 FA09B09 CC09 ER026 ET006 ET016 EU026 EU186 EV126 FA047 FD010 FD090 FD130 FD180 FD206 GL00
Claims (7)
樹脂を主成分とするバインダーを添加してマット状に成
形した無機繊維製断熱材において、ホルムアルデヒドと
反応して固定化可能な物質であるホルムアルデヒド捕捉
剤が添加されたことを特徴とする無機繊維製断熱材。1. An inorganic fiber insulation material formed by adding a binder mainly composed of a formaldehyde-based thermosetting resin to inorganic fibers and forming the mat into a mat-like shape. Insulating material made of inorganic fibers, characterized by adding an agent.
ムアルデヒド系熱硬化性樹脂に対して３重量％〜５０重
量％添加されたことを特徴とする無機繊維製断熱材。2. An inorganic fiber heat insulating material, wherein the formaldehyde scavenger is added in an amount of 3 to 50% by weight based on the formaldehyde-based thermosetting resin.
ジド化合物、アミノ基もしくはイミノ基を含む化合物ま
たは尿素の誘導体の少なくとも１種類からなることを特
徴とする請求項１または２に記載の無機繊維製断熱材。3. The heat insulating material made of inorganic fibers according to claim 1, wherein the formaldehyde scavenger comprises at least one of a hydrazide compound, a compound containing an amino group or an imino group, and a urea derivative. .
ン尿素、アジピン酸ジヒドラジド、１，３−ジメチル尿
素、サクシンイミドまたはフタルイミドの少なくとも１
種類からなることを特徴とする請求項１または２に記載
の無機繊維製断熱材。4. The method according to claim 1, wherein the formaldehyde scavenger comprises at least one of ethylene urea, adipic dihydrazide, 1,3-dimethyl urea, succinimide or phthalimide.
The inorganic fiber heat insulating material according to claim 1 or 2, wherein the heat insulating material is made of a kind.
樹脂を主成分とするバインダーを添加してマット状とし
たフェルトを加熱硬化させた後に、ホルムアルデヒドと
反応して固定化可能な物質であるホルムアルデヒド捕捉
剤を添加することを特徴とする無機繊維製断熱材の製造
方法。5. A process for adding a binder containing a formaldehyde-based thermosetting resin as a main component to an inorganic fiber, heating and curing a mat-like felt, and then reacting with formaldehyde to capture formaldehyde as a substance that can be fixed. A method for producing an inorganic fiber heat insulating material, comprising adding an agent.
ドラジド化合物、アミノ基もしくはイミノ基を含む化合
物または尿素の誘導体の少なくとも１種類を使用するこ
とを特徴とする請求項５に記載の無機繊維製断熱材の製
造方法。6. The inorganic fiber insulation material according to claim 5, wherein at least one of a hydrazide compound, a compound containing an amino group or an imino group, and a urea derivative is used as the formaldehyde scavenger. Production method.
チレン尿素、アジピン酸ジヒドラジド、アセトアミド、
１，３−ジメチル尿素、サクシンイミドまたはフタルイ
ミドの少なくとも１種類を使用することを特徴とする請
求項５に記載の無機繊維製断熱材の製造方法。7. As the formaldehyde scavenger, ethylene urea, adipic dihydrazide, acetamide,
The method according to claim 5, wherein at least one of 1,3-dimethylurea, succinimide and phthalimide is used.
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|---|---|---|---|
| JP37021299A JP2001178805A (en) | 1999-12-27 | 1999-12-27 | Insulating material made of inorganic fiber and method for producing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37021299A JP2001178805A (en) | 1999-12-27 | 1999-12-27 | Insulating material made of inorganic fiber and method for producing the same |
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|---|---|
| JP2001178805A true JP2001178805A (en) | 2001-07-03 |
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ID=18496350
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37021299A Pending JP2001178805A (en) | 1999-12-27 | 1999-12-27 | Insulating material made of inorganic fiber and method for producing the same |
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