JPH05339567A - Water holding agent for soil - Google Patents
Water holding agent for soilInfo
- Publication number
- JPH05339567A JPH05339567A JP4152233A JP15223392A JPH05339567A JP H05339567 A JPH05339567 A JP H05339567A JP 4152233 A JP4152233 A JP 4152233A JP 15223392 A JP15223392 A JP 15223392A JP H05339567 A JPH05339567 A JP H05339567A
- Authority
- JP
- Japan
- Prior art keywords
- water
- fertilizer
- particle size
- substance
- water retention
- 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
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Fertilizers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、土壌保水剤に関し、詳
しくは、高吸水性樹脂、無機物質及び有機質肥料の複合
体からなる、水不溶性高分子の保水効果と有機質肥料の
肥料効果とを兼ね備えた農薬、園芸用土壌保水剤に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil water-retaining agent, and more specifically, it shows the water-retaining effect of a water-insoluble polymer and the fertilizer effect of an organic fertilizer, which are composed of a composite of a superabsorbent resin, an inorganic substance and an organic fertilizer. It also relates to pesticides and soil water retention agents for gardening.
【０００２】[0002]
【従来の技術】植物が良く生育するためには、生育土壌
が適度の保水性及び通気性等を有することが必要であ
る。このため、近年吸水性高分子を用いた保水剤がいろ
いろ提案されている。しかしながら、高吸水性樹脂の粉
末を保水剤として用いた場合、一般的にその粒径が１mm
以下の大きさであるため風による飛散のため均一に散布
することが困難であるとか、飛散粉末を作業者が口中に
吸い込んでしまうとか、保水剤を手で散布するような場
合、保水剤が手の汗、雨等によってゲル化して相互粘着
したり、手にべと付き取扱い上問題を生じ易かった。2. Description of the Related Art In order for plants to grow well, it is necessary that the growing soil has appropriate water retention and air permeability. For this reason, various water retention agents using water-absorbing polymers have been proposed in recent years. However, when a powder of super absorbent polymer is used as a water retention agent, the particle size is generally 1 mm.
If the size is below, it is difficult to spray it evenly due to the scattering by the wind, or if the sprayed powder is sucked into the mouth by the operator, or if the water retention agent is sprayed by hand, the water retention agent They tend to gel and stick to each other due to sweat and rain on their hands, and they tend to stick to the hands and cause handling problems.
【０００３】この取扱い性の改善策として高吸水性樹脂
を天然土、ベントナイト、ゼオライト、珪藻土、活性炭
等の無機物と水及び水溶性高分子のバインダー等を用い
て複合化し、粒状に成形加工した複合体がいろいろ提案
されている。例えば、特開昭５９−３８２７１号公報に
はカーボンブラック及び／又は活性炭を含有する高吸水
性樹脂からなる粒状の保水剤が提案されている。また、
特開昭６３−１７１１３号公報には遅効性硅酸肥料とし
て働くフライアッシュを造粒した担体に水不溶性吸水性
樹脂を混合又は吸着させてなる土壌改良剤が提案されて
いる。As a measure for improving the handling property, a super absorbent polymer is compounded by using an inorganic substance such as natural soil, bentonite, zeolite, diatomaceous earth, activated carbon and the like and a binder of water and a water-soluble polymer, and molded into a granular form. Various bodies have been proposed. For example, Japanese Unexamined Patent Publication No. 59-38271 proposes a granular water retention agent made of a super absorbent resin containing carbon black and / or activated carbon. Also,
Japanese Unexamined Patent Publication No. 63-17113 proposes a soil improving agent prepared by mixing or adsorbing a water-insoluble water-absorbent resin on a carrier obtained by granulating fly ash which works as a slow-acting silicate fertilizer.
【０００４】[0004]
【発明が解決しようとする課題】保水剤としては前記の
複合体タイプの物が今後合成高分子保水剤の主流になり
つつある情勢である。これらは土壌保水剤としての本来
の効果は十分満たすものであるが、肥料としての効果は
全く無いので植物育成時には別途肥料を施す必要があ
る。しかしながら、肥料も一般に速効性のあると言われ
る無機物系の化学肥料では灌水時に高イオン濃度となる
ため併用した高吸水性樹脂の吸水性能が損われるという
問題点がある。As the water retention agent, the complex type water retention agent is becoming the mainstream of synthetic polymer water retention agents in the future. Although they sufficiently satisfy the original effects as soil water retention agents, they have no effect as fertilizers, so it is necessary to apply additional fertilizers when growing plants. However, fertilizers, which are generally said to be fast-acting, have the problem that the water-absorbing performance of the superabsorbent resin used together is impaired because of high ion concentration during irrigation.
【０００５】本発明は、従来の複合体タイプの保水剤の
問題点を解決しようとするものであって、高吸水性樹脂
の吸水性能が損われ難い有機質肥料を高吸水性樹脂に複
合化した所の肥料効果を備えた土壌保水剤を提供するこ
とを目的とするものである。The present invention is intended to solve the problems of the conventional composite type water retention agent, in which the organic fertilizer which is not easily impaired in the water absorbing performance of the super absorbent polymer is combined with the super absorbent polymer. The purpose of the present invention is to provide a soil water retention agent having a local fertilizer effect.
【０００６】[0006]
【課題を解決するための手段】本発明者等は、高吸水性
樹脂に無機物質と有機質肥料を複合化することにより保
水効果と肥料効果とを兼ね備えた優れた土壌保水剤を見
い出し、本発明を完成した。The present inventors have found an excellent soil water retention agent having both a water retention effect and a fertilizer effect by combining an inorganic substance and an organic fertilizer in a super absorbent resin, Was completed.
【０００７】即ち、本発明は、水不溶性の高吸水性樹
脂、無機物質及び有機質肥料を含有し、ペレット状又は
顆粒状の土壌保水剤である。[0007] That is, the present invention is a pellet or granular soil water retention agent containing a water-insoluble superabsorbent resin, an inorganic substance and an organic fertilizer.
【０００８】（水不溶性の高吸水性樹脂）本発明に用い
られる水不溶性の高吸水性樹脂は通常、自重の１００〜
１０００倍の水を吸水する物を指す。本発明に用いられ
る高吸水性樹脂は粒径０．１〜２mm程度の一般的な市販
品でよく、種々の物が使用可能である。本発明において
は、例えば（イ）デンプン−アクリロニトリルグラフト
重合体の加水分解物、（ロ）デンプン−アクリル酸グラ
フト重合体の中和物、（ハ）酢酸ビニル−アクリル酸エ
ステル共重合体のケン化物、（ニ）アクリロニトリル共
重合体もしくはアクリルアミド共重合体の加水分解物又
はこれらの架橋体、（ホ）アクリル酸塩−アクリル酸エ
ステル共重合体、（ヘ）自己架橋型ポリアクリル酸ナト
リウム、ポリアクリル酸部分中和物架橋体等が使用でき
る。これらの中、（ヘ）のポリアクリル酸部分中和物架
橋体が好ましい。このポリアクリル酸部分中和架橋体と
は、例えばアクリル酸の部分中和塩を所望によりＮ，
Ｎ′−メチレンビスアクリルアミドのような架橋剤の存
在下に過硫酸カリのような水溶性ラジカル重合開始剤を
用いて常法により水溶液重合或いは逆相懸濁重合させる
ことにより製造されるものであって、自己架橋型ポリア
クリル酸塩及び架橋剤による架橋ポリアクリル酸塩の両
者を含むものであり、使い捨て紙おむつ、生理ナプキン
等に多く使用される物と同種類の物である。(Water-insoluble superabsorbent resin) The water-insoluble superabsorbent resin used in the present invention usually has a weight of 100 to 100.
It refers to a substance that absorbs 1000 times as much water. The super absorbent polymer used in the present invention may be a general commercial product having a particle size of about 0.1 to 2 mm, and various products can be used. In the present invention, for example, (a) a hydrolyzate of a starch-acrylonitrile graft polymer, (b) a neutralized product of a starch-acrylic acid graft polymer, (c) a saponified product of a vinyl acetate-acrylic acid ester copolymer. , (D) Hydrolyzate of acrylonitrile copolymer or acrylamide copolymer or crosslinked products thereof, (v) acrylic acid salt-acrylic acid ester copolymer, (f) self-crosslinking sodium polyacrylate, polyacrylic An acid partially neutralized product crosslinked product or the like can be used. Among these, the crosslinked polyacrylic acid partially neutralized product (f) is preferable. This partially neutralized crosslinked polyacrylic acid is, for example, a partially neutralized salt of acrylic acid, if desired.
It is produced by aqueous solution polymerization or reverse phase suspension polymerization by a conventional method using a water-soluble radical polymerization initiator such as potassium persulfate in the presence of a crosslinking agent such as N'-methylenebisacrylamide. It includes both a self-crosslinking polyacrylic acid salt and a crosslinking polyacrylic acid salt by a cross-linking agent, and is of the same type as that often used for disposable paper diapers, sanitary napkins and the like.
【０００９】本発明に用いられるポリアクリル酸部分中
和物架橋体は、粒径、性能の異なる二種類の樹脂を混合
して使用される。一方は粒径１５０μ以上で吸水後に高
ゲル強度となる種類の物でこちらが主成分となる。他方
は３０μ以下で吸水後高粘度化する物とを混合使用する
ものである。前者で本来の保水作用をさせる。施用時の
土の重みでゲル破壊されにくく、また土壌の通気性改良
に効果がある。後者は保水剤成形時の結合剤バインダー
としての効果をだせるための物で強度のある成形物が得
られる。ここで、吸水後樹脂のゲル強度とは、具体的に
は、樹脂１ｇに純水１００ｇを吸水させた時の吸水ゲル
強度をレオメーター（不動工業製ＮＲＭ−２００２Ｊ
型、付属セル：直径２cm、円板状）を用いてテーブルス
ピード５cm／分にて測定し、セルがゲルの中に入り込む
時点の強度を指し、前者の高ゲル強度とは、これが１５
ｇ／cm2 以上、後者のものは５ｇ／cm2 以下のものを言
う。樹脂の水道水吸水能力は前者が２００倍以下程度の
低めのもの、後者が８００倍以上程度の高めの物が好ま
しい。本発明における配合量（２種類合計で）は保水剤
に対して５〜３０重量％、好ましくは１０〜２０重量％
である。The crosslinked polyacrylic acid partially neutralized product used in the present invention is used by mixing two kinds of resins having different particle diameters and performances. One is a type that has a particle size of 150 μm or more and exhibits high gel strength after absorbing water, and this is the main component. The other is to mix and use a substance having a viscosity of 30 μm or less and having a high viscosity after absorbing water. The former gives the original water retention effect. The weight of the soil during application makes it less likely to cause gel breakage, and is effective in improving the air permeability of the soil. The latter is a substance for exerting an effect as a binder binder at the time of molding a water retention agent, and a strong molded product can be obtained. Here, the gel strength of the resin after water absorption is, specifically, a rheometer (NRM-2002J manufactured by Fudo Kogyo Co., Ltd.), which is the gel strength of water absorbed when 1 g of resin absorbs 100 g of pure water.
Type, attached cell: diameter 2 cm, disk-shaped), measured at a table speed of 5 cm / min, and refers to the strength at the time when the cell enters the gel. The former high gel strength is 15
g / cm 2 or more, and the latter is 5 g / cm 2 or less. The tap water absorption capacity of the resin is preferably 200 times or less for the former and 800 times or more for the latter. The blending amount in the present invention (in total of two types) is 5 to 30% by weight, preferably 10 to 20% by weight based on the water retention agent.
Is.
【００１０】（無機物質）本発明に用いられる無機物質
としては、ゼオライト、ベントナイト、バーミキュライ
ト、パーライト、タルク、シリカ等があるが、これらの
中、水に接触してもほぼ中性のままであるゼオライトが
好ましい。使用するゼオライトの種類については特に限
定はない。天然物、合成物何れでもよい。粒径が５０μ
以下程度の粉末状の物が成形性がよく好適である。本発
明における配合量は保水剤に対して５０重量％以上、好
ましくは６０〜８０重量％である。(Inorganic substance) As the inorganic substance used in the present invention, there are zeolite, bentonite, vermiculite, perlite, talc, silica and the like. Among them, they remain almost neutral even when contacted with water. Zeolites are preferred. There is no particular limitation on the type of zeolite used. Either a natural product or a synthetic product may be used. Particle size is 50μ
The following powdery products are preferable because they have good moldability. The blending amount in the present invention is 50% by weight or more, preferably 60 to 80% by weight, based on the water retention agent.
【００１１】（有機質肥料）本発明に用いられる有機質
肥料としては、例えば魚糟、骨粉、油糟、乾燥菌体肥料
等が挙げられるが、これらは高吸水性樹脂及びゼオライ
トと混合し、成形可能な形態の物がよく、例えば微細な
粉体状又は粉砕加工したものがよい。なお、本発明にお
ける配合量は保水剤に対して１〜２０重量％、好ましく
は５〜１０重量％である。(Organic Fertilizer) Examples of the organic fertilizer used in the present invention include fish cakes, bone meal, oil cakes, dried bacterial cell fertilizers and the like, which can be formed by mixing with a super absorbent resin and zeolite. It is preferable that the material has various forms, for example, fine powder or pulverized material. The blending amount in the present invention is 1 to 20% by weight, preferably 5 to 10% by weight, based on the water retention agent.
【００１２】（保水剤の製造）保水剤の製造法として
は、例えば二種類の水不溶性高吸水性樹脂粉末とゼオラ
イトと有機質肥料とを混合した後、水を加えて混練した
物を押出し成形機にかけてペレット状又は顆粒状に成形
した後、加熱乾燥する方法が挙げられる。なお、この場
合、ＣＭＣ、ポリビニルアルコール等のようなバインダ
ーを新たに加える必要はないが、製品強度向上のためこ
れを更に加えることは差支えない。(Production of Water Retaining Agent) As a method for producing a water retaining agent, for example, two kinds of water-insoluble superabsorbent resin powder, zeolite and organic fertilizer are mixed, and then water is added and kneaded. Examples of the method include forming into pellets or granules by heating and heating and drying. In this case, it is not necessary to newly add a binder such as CMC or polyvinyl alcohol, but it may be added for improving the product strength.
【００１３】[0013]
【実施例】以下、本発明を実施例により更に具体的に説
明するが、本発明はこの実施例により限定されるもので
はない。EXAMPLES The present invention will now be described in more detail with reference to examples, but the present invention is not limited to these examples.
【００１４】実施例 高吸水性樹脂粉末Ａ ２０重量部（三菱油化（株）製、
商品名ダイヤウェットＡ、ポリアクリル酸塩系、粒径１
５０〜３００μ）と高吸水性樹脂粉末Ｂ ５重量部（三
菱油化（株）製、商品名ダイヤウェットＩ、ポリアクリ
ル酸塩系、粒径２０〜３０μ）と天然ゼオライト粉末６
５重量部（粒径５〜５０μ）と乾燥微粉砕化した有機質
肥料（骨粉と油糟混合物）１０重量部とを十分に混合し
た後、水６０重量部をスプレーしながら添加混練した。
これを押出し成形機にかけた後、温度９０℃の熱風乾燥
機にて乾燥した。粒径３〜５mm、長さ１０mmの本発明の
ペレット状粒状物を得た。この物の水道水吸収倍率は４
０ｇ−Ｈ２０／ｇであった。木屋式硬度計（木屋製作所
製、直径５mm円柱状シリンダー使用）を使用し破壊強度
を測定したところ平均１０〜１２kgであった。Example 20 parts by weight of highly water-absorbent resin powder A (manufactured by Mitsubishi Petrochemical Co., Ltd.,
Product name Diamond Wet A, polyacrylate type, particle size 1
50 to 300 μ) and 5 parts by weight of super absorbent polymer powder B (Mitsubishi Petrochemical Co., Ltd., trade name Diawet I, polyacrylate type, particle size 20 to 30 μ) and natural zeolite powder 6
5 parts by weight (particle size 5 to 50 μ) and 10 parts by weight of dried and finely pulverized organic fertilizer (a mixture of bone powder and oil syrup) were thoroughly mixed, and then 60 parts by weight of water was added and kneaded while spraying.
After applying this to an extrusion molding machine, it was dried with a hot air dryer at a temperature of 90 ° C. A pellet-like granular material of the present invention having a particle size of 3 to 5 mm and a length of 10 mm was obtained. The tap water absorption ratio of this product is 4
It was 0 g-H20 / g. When a Kiya type hardness meter (Kiya Seisakusho, using a cylinder having a diameter of 5 mm) was used to measure the breaking strength, the average was 10 to 12 kg.
【００１５】比較例 実施例の高吸水性樹脂Ｂを使用する代わりにＣＭＣ、又
はポリアクリル酸ソーダを同量（５重量部当り）使用し
て他は同様に配合して押出し成形機にかけた所、どちら
も成形機内の混合物の凝集物が多く付着し粒状物の生産
性が著しく低下した。その後、継続して、同様に乾燥処
理してペレット状粒状物を得た。この物の水道水吸収倍
率は２０〜３０ｇ−Ｈ２０／ｇであった。破壊強度は６
〜８kgであった。外観は実施例に比較して、ヒビが入っ
た物が多く有りまたペレット粒径のばらつきも多かっ
た。Comparative Example Instead of using the superabsorbent polymer B of Example, CMC or sodium polyacrylate was used in the same amount (per 5 parts by weight), and the other components were mixed in the same manner and subjected to an extrusion molding machine. However, in both cases, a large amount of aggregates of the mixture in the molding machine adhered, and the productivity of the granules significantly decreased. Then, it was continuously dried in the same manner to obtain pellet-like granular materials. The tap water absorption capacity of this product was 20 to 30 g-H20 / g. Breaking strength is 6
Was ~ 8 kg. As for the appearance, compared to the examples, there were many cracks and there were many variations in pellet particle size.
【００１６】[0016]
【発明の効果】本発明による保水剤は保水効果と肥料効
果とを兼ね備え、且つ取扱い易すく施用し易すい。The water retention agent according to the present invention has both a water retention effect and a fertilizer effect and is easy to handle and easy to apply.
Claims (6)
有機質肥料を含み、ペレット状又は顆粒状の土壌保水
剤。1. A soil water retention agent in the form of pellets or granules, which comprises a water-insoluble superabsorbent resin, an inorganic substance and an organic fertilizer.
％、無機物質が５０重量％以上且つ有機質肥料が１〜２
０重量％である請求項１の土壌保水剤。2. A water-insoluble superabsorbent resin of 5 to 30% by weight, an inorganic substance of 50% by weight or more, and an organic fertilizer of 1 to 2
The soil water retention agent according to claim 1, which is 0% by weight.
酸部分中和物である請求項２の土壌保水剤。3. The soil water retention agent according to claim 2, wherein the water-insoluble superabsorbent resin is a polyacrylic acid partially neutralized product.
土壌保水剤。4. The soil water retention agent according to claim 2, wherein the inorganic substance is zeolite.
μ以上で吸水後高ゲル強度となる物及び粒径３０μ以下
で吸水後高粘度化する物との混合物である請求項３の土
壌保水剤。5. The particle size of the partially neutralized polyacrylic acid is 150.
4. The soil water retention agent according to claim 3, which is a mixture of a substance having a high gel strength after absorbing water at .mu.
土壌保水剤。6. The soil water retention agent according to claim 5, wherein the inorganic substance is zeolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15223392A JP3336037B2 (en) | 1992-06-11 | 1992-06-11 | Soil water retention agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15223392A JP3336037B2 (en) | 1992-06-11 | 1992-06-11 | Soil water retention agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05339567A true JPH05339567A (en) | 1993-12-21 |
| JP3336037B2 JP3336037B2 (en) | 2002-10-21 |
Family
ID=15536000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15223392A Expired - Fee Related JP3336037B2 (en) | 1992-06-11 | 1992-06-11 | Soil water retention agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3336037B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998012154A1 (en) * | 1996-09-17 | 1998-03-26 | Envirolutions Inc. | Soil additive |
| KR100463313B1 (en) * | 2002-02-22 | 2004-12-23 | 배석찬 | A method for preparing super adsorbent resin fertilizers |
| WO2007148992A1 (en) * | 2006-06-19 | 2007-12-27 | Gavin Frank Murdoch | Plant beneficial composition |
| CN100383218C (en) * | 2006-02-09 | 2008-04-23 | 武汉阳光建筑新材料有限公司 | Chemical sand fixing material and its preparing method |
| CN100443564C (en) * | 2005-08-24 | 2008-12-17 | 新疆赛里斯科技开发有限公司 | Composite base material sand-fixation agent and manufacture method |
| CN103193552A (en) * | 2013-04-25 | 2013-07-10 | 焦楠 | Complex water-retaining synergistic chemical fertilizer |
| CN108504361A (en) * | 2017-02-24 | 2018-09-07 | 深圳市昶裕隆实业有限公司 | A kind of soil reformation method and its transformation agent |
| CN114478963A (en) * | 2021-12-23 | 2022-05-13 | 广西精典化工新材料有限公司 | Synthesis of zeolite molecular sieve copolymer water-retaining agent for desert control |
-
1992
- 1992-06-11 JP JP15223392A patent/JP3336037B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998012154A1 (en) * | 1996-09-17 | 1998-03-26 | Envirolutions Inc. | Soil additive |
| KR100463313B1 (en) * | 2002-02-22 | 2004-12-23 | 배석찬 | A method for preparing super adsorbent resin fertilizers |
| CN100443564C (en) * | 2005-08-24 | 2008-12-17 | 新疆赛里斯科技开发有限公司 | Composite base material sand-fixation agent and manufacture method |
| CN100383218C (en) * | 2006-02-09 | 2008-04-23 | 武汉阳光建筑新材料有限公司 | Chemical sand fixing material and its preparing method |
| WO2007148992A1 (en) * | 2006-06-19 | 2007-12-27 | Gavin Frank Murdoch | Plant beneficial composition |
| CN103193552A (en) * | 2013-04-25 | 2013-07-10 | 焦楠 | Complex water-retaining synergistic chemical fertilizer |
| CN108504361A (en) * | 2017-02-24 | 2018-09-07 | 深圳市昶裕隆实业有限公司 | A kind of soil reformation method and its transformation agent |
| CN114478963A (en) * | 2021-12-23 | 2022-05-13 | 广西精典化工新材料有限公司 | Synthesis of zeolite molecular sieve copolymer water-retaining agent for desert control |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3336037B2 (en) | 2002-10-21 |
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