JPH11178463A - Flame retardant mulching material - Google Patents
Flame retardant mulching materialInfo
- Publication number
- JPH11178463A JPH11178463A JP36565097A JP36565097A JPH11178463A JP H11178463 A JPH11178463 A JP H11178463A JP 36565097 A JP36565097 A JP 36565097A JP 36565097 A JP36565097 A JP 36565097A JP H11178463 A JPH11178463 A JP H11178463A
- Authority
- JP
- Japan
- Prior art keywords
- flame retardant
- parts
- mulching material
- weight
- flame
- 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.)
- Pending
Links
Landscapes
- Protection Of Plants (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、緑化事業並びに農業用
に使用される難燃性マルチング材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flame-retardant mulching material used for a greening business and for agriculture.
【０００２】[0002]
【従来の技術】植樹された樹木等の根元及び樹木の間に
は、地表面からの水分の蒸散を抑制すること、及び雑草
の生育を防ぐためにマルチング材を敷くことが一般に行
なわれている。このマルチング材は、敷設された後の飛
散、流失を防止するために、植生糊が配合されているの
が通常である。一方、最近では、煙草の投げ捨て等によ
るマルチング材への着火が問題となっており、このこと
から、容易に着火するのを防止するために難燃剤を配合
した難燃性マルチング材が提案されている（特開平８−
８９０９７）。2. Description of the Related Art Generally, mulching materials are laid between roots of trees and the like, and trees between planted trees to prevent the evaporation of water from the ground surface and to prevent the growth of weeds. This mulching material is usually mixed with vegetation paste in order to prevent the mulching material from scattering and losing after being laid. On the other hand, recently, ignition of the mulching material by throwing away cigarettes has become a problem, and from this fact, a flame-retardant mulching material containing a flame retardant to prevent easy ignition has been proposed. (Japanese Unexamined Patent Publication No.
89097).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、マルチ
ング材に供される材料が近年の木材不足等から広葉樹の
樹皮を原料としたマルチング材から、針葉樹の樹皮や木
質部、更には、廃材の再利用等のように材料の多用化が
進んでいる。従来の広葉樹の樹皮を原料としたマルチン
グ材に比して、針葉樹の樹皮及び木質部には、ロジン等
の樹脂状物が多く含有されていることから、配合される
難燃剤及び植生糊の展着が不充分となり易く、難燃効果
の低下の原因となっている。本発明者等は、この問題を
解決すべく鋭意検討を重ねた結果、難燃性マルチング材
に湿潤浸透剤を配合することにより、材料の樹種や部位
を問わず、着火し難く、火災発生までに至らせないこと
を見出し、ここに提案するに至ったものである。However, due to the recent shortage of wood and the like, materials used for mulching materials include mulching materials using hardwood bark as raw materials, bark and woody parts of coniferous trees, and reuse of waste materials. The use of materials is increasing. Compared with conventional mulching wood made from hardwood bark, softwood bark and woody material contain more resinous substances such as rosin, so that the flame retardant and vegetative paste to be incorporated are spread. Are likely to be insufficient, which causes a decrease in the flame retardant effect. The present inventors have conducted intensive studies to solve this problem, and as a result, by adding a moist penetrating agent to the flame-retardant mulching material, regardless of the tree type and site of the material, it is difficult to ignite, and until the occurrence of fire It has been found that it does not lead to, and has been proposed here.
【０００４】[0004]
【課題を解決するための手段】以上の課題の下、本発明
は、樹皮及び／又は木質部を粉砕したものに、植生糊と
して水性エマルションと、難燃剤として燐酸及び／又は
燐酸塩を用い、繊維表面への展着性を向上させる目的で
湿潤浸透剤を併せて用いることを特徴とする難燃性マル
チング材を提供する。SUMMARY OF THE INVENTION Under the above-mentioned problems, the present invention provides a method of pulverizing bark and / or wood, using an aqueous emulsion as a vegetative paste, and phosphoric acid and / or phosphate as a flame retardant. Provided is a flame-retardant mulching material characterized by using a wet penetrant in combination for the purpose of improving spreadability on a surface.
【０００５】本発明で用いる樹種は、広葉樹，針葉樹い
ずれを用いてもよく、部位も樹皮に限らず木質部を用い
てもよい。更に、使用済みの廃材等を用いても構わな
い。又、植生糊としての水性エマルションには、アクリ
ル系樹脂エマルション、ウレタン系樹脂エマルション、
酢酸系樹脂エマルション、塩化ビニル系樹脂エマルショ
ン、塩化ビニリデン系樹脂エマルション及びスチレン−
ブタジエン系樹脂エマルションの一種又は二種以上の混
合物が用いられるが、この中でも、アクリル系樹脂エマ
ルションが難燃剤との相溶性、経済性等から好んで用い
られる。[0005] The tree species used in the present invention may be either hardwood or coniferous wood, and the site is not limited to bark but may be woody. Further, a used waste material or the like may be used. In addition, the aqueous emulsion as a vegetative paste, acrylic resin emulsion, urethane resin emulsion,
Acetic acid resin emulsion, vinyl chloride resin emulsion, vinylidene chloride resin emulsion and styrene
One or a mixture of two or more butadiene-based resin emulsions is used. Among them, an acrylic resin emulsion is preferably used because of its compatibility with a flame retardant, economy, and the like.
【０００６】植生糊としてのアクリル系樹脂エマルショ
ンの添加量は、樹皮等の粉砕物１００重量部に対して、
０．１〜５０重量部が好ましく、更に好ましくは、０．
３〜３０重量部が好適である。添加量が０．１重量部未
満では、マルチング材の成形性が充分ではなく、飛散防
止効果が発揮できない。又、５０重量部を超えると、成
形効果の一層の向上にはならず、不経済である。植生糊
としてのアクリル系樹脂エマルションの樹皮等の粉砕物
への添加は、均一に混合され易いように数倍〜数十倍に
希釈して用いるのがよい。The addition amount of the acrylic resin emulsion as a vegetative paste is based on 100 parts by weight of a pulverized material such as bark.
The amount is preferably 0.1 to 50 parts by weight, more preferably 0.1 to 50 parts by weight.
3 to 30 parts by weight are preferred. If the addition amount is less than 0.1 part by weight, the mulching material has insufficient moldability and cannot exhibit the scattering prevention effect. On the other hand, if the amount exceeds 50 parts by weight, the molding effect is not further improved, which is uneconomical. The acrylic resin emulsion as a vegetative paste is preferably added to pulverized materials such as bark by diluting it several times to several tens times so that it is easily mixed uniformly.
【０００７】難燃剤としては、燐酸、燐酸アンモニウ
ム、ポリ燐酸アンモニウム、燐酸メラミン、ピロ燐酸メ
ラミン、ポリ燐酸メラミン、燐酸グアニジン等の燐酸塩
の一種又は二種以上が用いられる。しかし、本発明で用
いられる難燃剤は、その用途から安価に入手できるのが
好ましく、比較的安価な燐酸が好適である。難燃剤の添
加量は、樹皮等の粉砕物１００重量部に対して０．１〜
１０重量部が望ましく、０．１重量部以下の場合は難燃
効果が発揮できない。又、１０重量部を超える量を添加
した場合は、難燃効果の一層の向上にはならず、不経済
である。As the flame retardant, one or more of phosphates such as phosphoric acid, ammonium phosphate, ammonium polyphosphate, melamine phosphate, melamine pyrophosphate, melamine polyphosphate, and guanidine phosphate are used. However, the flame retardant used in the present invention is preferably available inexpensively from the application, and relatively inexpensive phosphoric acid is suitable. The addition amount of the flame retardant is 0.1 to 100 parts by weight of the pulverized material such as bark.
10 parts by weight is desirable, and when it is 0.1 parts by weight or less, the flame retardant effect cannot be exhibited. On the other hand, when the amount exceeds 10 parts by weight, the flame retardant effect is not further improved, which is uneconomical.
【０００８】本発明に用いる湿潤浸透剤としては、スル
ホン酸型、カルボン酸型、硫酸エステル型、リン酸エス
テル型のアニオン界面活性剤が使用されるが、スルホン
酸型がその溶解性、ＰＨ範囲等から好適である。湿潤浸
透剤の添加量は、樹皮等の粉砕物１００重量部に対して
０．０１〜５重量部が望ましく、０．０１重量部未満の
場合は、難燃剤の展着が悪く、難燃効果が充分発揮でき
ない。又、５重量部を超える量を添加した場合は、展着
性の一層の向上にはならず、不経済である。As the wetting penetrating agent used in the present invention, sulfonic acid type, carboxylic acid type, sulfate ester type and phosphate ester type anionic surfactants are used. It is preferable from the above. The addition amount of the wetting penetrant is desirably 0.01 to 5 parts by weight based on 100 parts by weight of the pulverized material such as bark. When the amount is less than 0.01 part by weight, the spread of the flame retardant is poor, and the flame retardant effect is obtained. Cannot be fully demonstrated. On the other hand, if the amount exceeds 5 parts by weight, the spreadability is not further improved, which is uneconomical.
【０００９】次に、本発明の難燃性マルチング材の製造
方法の一例を記す。即ち、広葉樹及び／又は針葉樹の樹
皮、又はこれらの木質部を常用の粉砕機、例えばチョッ
パー型粉砕機を用いて粉砕したものを、常用の混合機、
例えばリボン混合機に一定量入れ、これに湿潤浸透剤を
添加して混合する。この混合物に難燃剤を添加し、均一
に混合して製品Ａを得る。続いて製品Ａに植生糊として
の水性エマルションを添加し、均一に混合して製品Ｂを
得る。Next, an example of a method for producing the flame-retardant mulching material of the present invention will be described. That is, the bark of hardwood and / or conifer, or those obtained by pulverizing these woody parts using a conventional crusher, for example, a chopper type crusher, is a conventional mixer,
For example, a predetermined amount is put into a ribbon mixer, and a wet penetrant is added thereto and mixed. The product A is obtained by adding a flame retardant to this mixture and mixing uniformly. Subsequently, an aqueous emulsion as a vegetative paste is added to the product A and uniformly mixed to obtain a product B.
【００１０】以上の難燃性マルチング材を施工するに
は、植樹された樹木等の根元及び樹木の間に製品Ｂを敷
き、上部よりスコップ等で加圧成形する方法と、製品Ａ
を敷いた後、水性エマルションを噴霧器等で散布した
後、スコップ等で加圧成形する方法とがある。[0010] In order to construct the above flame-retardant mulching material, a method of laying a product B between the roots of the planted trees or the like and the trees and press-molding with a scoop or the like from above and a product A
And then spraying the aqueous emulsion with a sprayer or the like, followed by pressure molding with a scoop or the like.
【００１１】植生糊の効果の発現は、マルチング材を敷
いた後、上面より加圧して成形する際に、繊維表面の付
着水分が下層へ移動して表面の含水率が低下し、その結
果、水性エマルションの接着力が現れるためと推測され
る。一方、湿潤浸透剤及び難燃剤を添加したことによる
難燃機構は、本発明者等の種々の実験と観察とにより、
湿潤浸透剤の界面活性剤で濡れた繊維表面に難燃剤の燐
酸及び燐酸塩が展着し、燐酸及び燐酸塩が燃焼雰囲気の
熱によって加熱され、生成したポリ燐酸により形成した
不燃性被膜が木材繊維を被覆して着火を防止するものと
推察している。The effect of the vegetation glue is that when the mulching material is laid, the water adhering to the fiber surface moves to the lower layer when the mulching material is pressed and molded from the upper surface to lower the moisture content of the surface. It is presumed that the adhesive force of the aqueous emulsion appears. On the other hand, the flame retardant mechanism by the addition of the wet penetrant and the flame retardant, by various experiments and observations of the present inventors,
The flame retardant phosphoric acid and phosphate are spread on the surface of the fiber wetted by the surfactant of the wetting penetrant, and the phosphoric acid and phosphate are heated by the heat of the combustion atmosphere. It is speculated that the fiber is coated to prevent ignition.
【００１２】このように、湿潤浸透剤及び難燃剤を配合
した難燃性マルチング材は、従来の地表面からの水分の
蒸散を抑制すること、及び雑草の生育を防止するという
効果に加えて、火災を防ぐという優れた効果が原料とな
る樹木の種類を問わず、しかも、低コストで得られる特
徴を有するものである。As described above, the flame retardant mulching material containing the moist penetrating agent and the flame retardant has the effect of suppressing the evaporation of water from the conventional ground surface and the effect of preventing the growth of weeds. An excellent effect of preventing fire is obtained regardless of the type of tree used as a raw material and at a low cost.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を実施
例を挙げて説明するが、本発明の要旨は、それらに限定
されるものではない。以下に用いる部及び％は、総て重
量部及び重量％を示す。尚、着火テストは、次の方法に
依った。即ち、マルチング材を５ｃｍの厚さで３０ｃｍ
角に成形し、３０℃で５時間放置した後、斜め上部より
５〜６ｍ／ｓｅｃの風速の風を当てておき、着火した煙
草をマルチング材上に置いて煙草が燃え尽きるまで燃焼
状態を観察した。DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to examples, but the gist of the present invention is not limited thereto. All parts and percentages used below refer to parts by weight and percentage by weight. In addition, the ignition test was based on the following method. That is, the mulching material is 30 cm in thickness of 5 cm.
After being formed into a corner and left at 30 ° C. for 5 hours, a wind having a wind speed of 5 to 6 m / sec was applied from the upper oblique direction, the lit cigarette was placed on a mulching material, and the burning state was observed until the cigarette was burned out. .
【００１４】〔実施例１〕樹皮の粉砕物１００部をリボ
ン型混合機に仕込み、湿潤浸透剤（一方社油脂工業製ス
パラン３３）１．２部を加え、充分混合する。続いて難
燃剤として７５％燐酸（三井化学製精製燐酸）２．１部
を加える。次に、アクリル系樹脂エマルション（積水化
学製Ｎｏ．７５１０）１．４部を水１２部で希釈した後
に加え、同様に充分混合して難燃性マルチング材を得
た。得られたマルチング材の着火テストの結果は、焦
げ、発煙等は見られず良好であった。[Example 1] 100 parts of the bark pulverized product is charged into a ribbon type mixer, and 1.2 parts of a moist penetrating agent (on the other hand, SPARAN 33 manufactured by YAS Corporation) is added and thoroughly mixed. Subsequently, 2.1 parts of 75% phosphoric acid (purified phosphoric acid manufactured by Mitsui Chemicals) is added as a flame retardant. Next, 1.4 parts of an acrylic resin emulsion (No. 7510 manufactured by Sekisui Chemical Co., Ltd.) was added after dilution with 12 parts of water, and similarly mixed well to obtain a flame-retardant mulching material. As a result of the ignition test of the obtained mulching material, no scorching or smoking was observed, and the result was good.
【００１５】〔実施例２〕実施例１の樹皮を木質粉砕物
１００部に変更した以外は実施例１と同様に行なった。
得られたマルチング材の着火テストの結果は、焦げ、発
煙等は見られず良好であった。Example 2 Example 1 was repeated except that the bark of Example 1 was changed to 100 parts of wood pulverized material.
As a result of the ignition test of the obtained mulching material, no scorching or smoking was observed, and the result was good.
【００１６】〔実施例３〕樹皮の粉砕物１００部をリボ
ン型混合機に仕込み、湿潤浸透剤（一方社油脂工業製ス
パラン３３）１．２部を７５％燐酸（三井化学製精製燐
酸）２．１部を加えて充分に混合し、混合機より取り出
し、５ｃｍ厚みに敷きつめた。この上からアクリル系樹
脂エマルション（積水化学製Ｎｏ．７５１０）１．４部
を水１２部で希釈した液を、噴霧器を用いて噴霧した。
着火テストの結果は、焦げ、発煙等は見られず良好であ
った。Example 3 100 parts of the bark pulverized product was charged into a ribbon type mixer, and 1.2 parts of a wetting penetrant (Spanran 33 manufactured by Sharp Yushi Kogyo Co., Ltd.) was added to 75% phosphoric acid (purified phosphoric acid manufactured by Mitsui Chemicals) 2 1 part was added and mixed well, taken out of the mixer and spread to a thickness of 5 cm. From above, a liquid obtained by diluting 1.4 parts of an acrylic resin emulsion (No. 7510 manufactured by Sekisui Chemical) with 12 parts of water was sprayed using a sprayer.
The result of the ignition test was good with no scorching or smoking.
【００１７】〔実施例４〜６〕実施例１の湿潤浸透剤と
して、それぞれカルボン酸型アニオン界面活性剤１．２
部（実施例４）、硫酸エステル型１．２部（実施例
５）、リン酸エステル型１．２部（実施例６）に変更し
た以外は、実施例１と同様に行なった。その結果は、焦
げ、発煙等は見られず良好であった。[Examples 4 to 6] As the wetting penetrant of Example 1, a carboxylic acid type anionic surfactant 1.2 was used.
Parts (Example 4), 1.2 parts of a sulfate ester type (Example 5), and 1.2 parts of a phosphate ester type (Example 6). The results were good, with no scorching or smoking.
【００１８】〔実施例７〕実施例１の難燃剤を燐酸二水
素アンモニウムに変更した以外は、実施例１と同様に行
なった。その結果は、焦げ、発煙等は見られず良好であ
った。Example 7 Example 7 was carried out in the same manner as in Example 1 except that the flame retardant was changed to ammonium dihydrogen phosphate. The results were good, with no scorching or smoking.
【００１９】〔比較例１〕実施例２の湿潤浸透剤を除い
た以外は実施例１と同様に行なった。着火テストの結果
は、約１分後に発火し、燃焼が始まった。Comparative Example 1 The procedure of Example 1 was repeated except that the wet penetrant was omitted. The result of the ignition test was that after about one minute the fire ignited and combustion began.
【００２０】〔比較例２〕実施例１の湿潤浸透剤を８部
に変更した以外は、実施例１と同様に行なった。その結
果は、焦げ、発煙等は見られず良好であった。しかし、
実施例１に比して格段の効果は見られなかった。[Comparative Example 2] The procedure of Example 1 was repeated, except that the wet penetrant was changed to 8 parts. The results were good, with no scorching or smoking. But,
No remarkable effect was observed as compared with Example 1.
【００２１】〔比較例３〕実施例１の湿潤浸透剤を０．
００５部に変更した以外は実施例１と同様に行なった。
その結果は、約１分後に発火し、燃焼が始まった。[Comparative Example 3] The wet penetrant of Example 1 was used in an amount of 0.
The same procedure as in Example 1 was performed except that the number of parts was changed to 005 parts.
The result was that the fire ignited after about one minute and combustion began.
【００２２】[0022]
【発明の効果】以上、本発明によれば、針葉樹の樹皮、
木質部の如き、ロジン等の樹脂成分を多く含む原料を用
いたマルチング材の難燃化が望まれていたのであるが、
湿潤浸透剤を加えることによりその目的を達成できたの
である。As described above, according to the present invention, the bark of conifers,
It was desired to make the mulching material flame-retardant using a raw material containing a large amount of resin components such as rosin, such as wood.
The purpose was achieved by adding a wet penetrant.
Claims (4)
に、植生糊として水性エマルションと、難燃剤として燐
酸及び／又は燐酸塩を用い、繊維表面への展着性を向上
させる目的で湿潤浸透剤を併せて用いることを特徴とす
る難燃性マルチング材。An aqueous emulsion as a vegetative paste, and a phosphoric acid and / or a phosphate as a flame retardant, obtained by pulverizing bark and / or woody parts, and a wet penetrant for the purpose of improving spreadability on the fiber surface. A flame-retardant mulching material characterized by using
ある請求項１記載の難燃性マルチング材。2. The flame retardant mulching material according to claim 1, wherein the wetting penetrating agent is a sulfonic acid type surfactant.
ルションである請求項１又は２記載の難燃性マルチング
材。3. The flame-retardant mulching material according to claim 1, wherein the aqueous emulsion is an acrylic resin-based emulsion.
重量部に、水性エマルション０．１〜５０重量部、難燃
剤０．１〜１０重量部並びに湿潤浸透剤０．１〜５重量
部が含有されてなる請求項１〜３いずれかに記載の難燃
性マルチング材。4. The ground bark and / or wood part 100
The difficult-to-treat according to any one of claims 1 to 3, wherein 0.1 to 50 parts by weight of the aqueous emulsion, 0.1 to 10 parts by weight of the flame retardant, and 0.1 to 5 parts by weight of the wet penetrant are contained in parts by weight. Flammable mulching material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36565097A JPH11178463A (en) | 1997-12-22 | 1997-12-22 | Flame retardant mulching material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36565097A JPH11178463A (en) | 1997-12-22 | 1997-12-22 | Flame retardant mulching material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11178463A true JPH11178463A (en) | 1999-07-06 |
Family
ID=18484786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36565097A Pending JPH11178463A (en) | 1997-12-22 | 1997-12-22 | Flame retardant mulching material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11178463A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002068558A1 (en) * | 2001-02-22 | 2002-09-06 | Shin-Etsu Chemical Co., Ltd. | Water-based water repellant for treatment of substrates |
| JP2006061045A (en) * | 2004-08-25 | 2006-03-09 | Nagoya Pulp Kk | Fire-resistant mulching material |
-
1997
- 1997-12-22 JP JP36565097A patent/JPH11178463A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002068558A1 (en) * | 2001-02-22 | 2002-09-06 | Shin-Etsu Chemical Co., Ltd. | Water-based water repellant for treatment of substrates |
| US6916507B2 (en) | 2001-02-22 | 2005-07-12 | Shin-Etsu Chemical Co., Ltd. | Aqueous water repellent for substrate treatment, making method, preparation of modified plywood or modified laminated veneer lumber, and preparation of wooden fiberboard |
| JP2006061045A (en) * | 2004-08-25 | 2006-03-09 | Nagoya Pulp Kk | Fire-resistant mulching material |
| JP4557637B2 (en) * | 2004-08-25 | 2010-10-06 | 大王製紙株式会社 | Flame retardant mulching material |
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