JP3856732B2 - Flame retardant biodegradable resin composition and flame retardant biodegradable composite material - Google Patents
Flame retardant biodegradable resin composition and flame retardant biodegradable composite material Download PDFInfo
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Description
【０００１】
【発明の属する技術分野】
本発明は難燃性を要する生分解性樹脂組成物及び生分解性複合材料に関するものである。
【０００２】
【従来の技術】
近年、環境保全の見地からポリ乳酸をはじめとする生分解性樹脂が注目されている。例えば、農林水産、建築土木、食品関係等の広い分野で、繊維、フィルム、不織布、コーティング剤、接着剤、成形品等の形で利用されつつある。
しかしながら、生分解性樹脂そのものは強い難燃性を有しておらず、難燃性を必要とする分野では、まだ技術的に確立されていないのが現状である。従来より用いられているハロゲン系の難燃剤は優れた難燃性を有する。しかしこれを難燃剤として用いた生分解性樹脂を使用後に生分解されるべく土中や堆肥中に埋没した場合、生分解を受けないハロゲン系物質が土壌に残るため土壌を汚染することになるという問題がある。
【０００３】
【発明が解決しようとする課題】
本発明は、このような現状に鑑みてなされたものであり、優れた難燃性を有し、その難燃成分は肥料の主成分として用いられているものである難燃性生分解性樹脂組成物及び難燃性生分解性複合材料を提供することを目的とするものである。
【０００４】
【課題を解決するための手段】
本発明は、上記の課題を解決するものであり、次の構成を有するものである。
すなわち本発明は、
「１． 生分解性樹脂中に尿素、リン酸アンモニウム、ポリリン酸アンモニウム、及びグアニジン系化合物から選択される化学物質を少なくとも１種類含むことを特徴とする難燃性生分解性樹脂組成物でポリ乳酸系樹脂繊維織布を被覆してなる難燃性生分解性複合材料。
２． 生分解性樹脂がポリ乳酸系樹脂である、１項に記載された難燃性生分解性複合材料。
３． 限界酸素指数が２６以上である、１項または２項に記載された難燃性生分解性複合材料。」
に関する。
【０００５】
【発明の実施の形態】
以下、本発明を詳細に説明する。
先に本発明の難燃性生分解性樹脂組成物について説明する。
本発明の難燃性生分解性樹脂組成物で用いられる生分解性樹脂は特に限定しないが、脂肪族ポリエステル系樹脂が好ましい。具体的には乳酸、グリコール酸、乳酸ヒドロキシブチルカルボン酸等のヒドロキシアルキルカルボン酸、グリコリド、ラクチド、ブチロラクトン、カプロラクトン等の脂肪族ラクトン、エチレングリコール、プロピレングリコール、ブタンジオール、ヘキサンジオール等の脂肪族ジオール、コハク酸、アジピン酸、セバシン酸等の脂肪族ジカルボン酸等の重合原料を重合した樹脂が上げられる。これらの中で耐熱性、機械的特性等を考慮すると光学異性体を有するポリ乳酸同士の組み合わせたポリ乳酸系樹脂の使用が特に好ましい。
【０００６】
本発明の難燃性生分解性樹脂組成物で生分解性樹脂中に添加される化学物質は尿素、リン酸アンモニウム、ポリリン酸アンモニウム、グアニジン系化合物の内、少なくとも１種以上を含む。これらの化合物は肥料として用いられているものの主成分である。尿素、リン酸アンモニウムは単体として、ポリリン酸アンモニウムは縮合リン酸塩系としてそれぞれ肥料の主成分として用いられている。なおポリリン酸アンモニウムを主成分とするものの例としてはホストフラムＡＰ４２２、ＡＰ７５０、ＡＰ４６２(クラリアントジャパン株式会社製)やＴＥＲＲＡＪＵＣ６０、Ｃ７０、Ｃ８０（チッソ株式会社製）等が挙げられる。また、グアニジン系化合物としてはスルファミン酸グアニジン（例としてアピノン−１０１（三和ケミカル株式会社製））、リン酸グアニジン（例としてアピノン−３０１(三和ケミカル株式会社製)）、ジシアンジアミド（例としてヂシアンヂアミド（日本カーバイト株式会社製）やエピキュアＤＩＣＹ７Ａ、ＤＩＣＹ１５(ジャパンエポキシレジン株式会社製)）、炭酸グアニジン、グアニル尿素が挙げられる、これらも肥料の主成分として用いられる。これらの化合物は１種類のみでなく複数種添加されても構わない。
【０００７】
尿素の場合は１３２℃で溶解し、さらに加熱すると尿素粒子が互いに凝縮し、分解しやすくなるので、尿素を配合した組成物の成形温度は１３２℃未満であることが望ましい。該尿素自体は粉末、結晶などその形態については特に限定しないが、粉末尿素は組成物内の分散が良好である。また尿素は極性が強く、熱可塑性重合体への相溶性が不良であるため、該分散を良くしかつ配合量を上げるためにその粒径は５０μｍ以下が望ましく、２０μｍ以下の粉末状であることが好ましい。また粉末尿素は粒径が小さくなるほど潮解しやすくなるため本発明の組成物同士のブロッキングが生じやすくなる。該ブロッキング防止のため、成形温度以下の融点を有し昇華しやすい数％のステアリン酸などの滑剤を添加しても良い。
本発明の難燃性生分解性樹脂組成物でこれらの化学物質を用いているのは、生分解性樹脂の難燃性を付与させるためのみでなく、肥料の主成分として用いられている物質であるため、本発明の難燃性生分解性樹脂組成物を使用後に土中や堆肥中に埋没すると、生分解性樹脂成分はバクテリア等の作用で分解し、残った化学物質は農作物、園芸、植生等の肥料として有効に活用できるからである。
【０００８】
本発明で生分解性樹脂中に本発明で規定する化学物質を添加する手法は特に限定せず、従来より用いられている添加手法を用いればよい。たとえば、繊維、フィルム、成形品等の場合、生分解樹脂のチップ中に化学物質を混合して溶融分散させて各製品に仕上げる。また、コーティング剤、接着剤等の場合、溶解、あるいは分散させ、コーティング、接着に用いればよい。
ただし本発明で用いる化学物質の内、生分解性樹脂中に混練や溶融させることでその分解温度を超え分解する場合があるが、それらの化学物質については分解温度以上の温度状況に該当する化学物質が曝されない製造方法で得ることは言うまでもない。例えば尿素の分解温度は１３２℃なので、２００℃を超えるような高温での混練や溶融工程が伴う製造方法は適さないが、コーティング剤や接着剤中に溶解、あるいは分散させて用いることは適する。
【０００９】
本発明の生分解性樹脂組成物に添加する尿素、リン酸アンモニウム、ポリリン酸アンモニウム、及びグアニジン系化合物から選択される化学物質の全添加量は特に限定しない。要求される難燃性と樹脂の物理的要求特性を考慮して適宜配合すればよい。一般的にその添加量は２０部から８０部であり、２０部未満であると難燃効果が得られにくく、また８０部より多くなると材料強度など物性に悪影響を与える。
また、本発明では本発明で規定する化学物質を適宜に種類及び量を選び、顔料、染料、可塑剤、紫外線吸収剤、光安定剤、酸化防止剤、安定剤、カップリング剤、希釈剤、増粘剤、発泡剤、分散剤、消泡剤、防黴剤、防藻剤等を併用することができる。
本発明の難燃性生分解性樹脂組成物は自己消火性、難燃性を示す限界酸素指数は２６以上であることが好ましい。２６以下では自己消火性、難燃性が不十分な場合があるので好ましくない。
【００１０】
次に本発明の難燃性生分解性複合材料について説明する。
本発明の難燃性生分解性複合材料では生分解性シート基材を用いるのは、本発明の趣旨から複合材料全体が生分解を受けること必要であるからである。生分解性シート基材は特に限定されるものではないが、天然繊維やレーヨン等のセルロース系繊維、もしくは生分解性樹脂からなる繊維で構成された織編布や不織布、あるいは生分解性樹脂かなるフィルム、あるいは紙を用いることができる。
また、この生分解性シート基材を構成する生分解性樹脂は本発明の難燃性生分解性樹脂組成物で用いるものと同じで構わないし、異なっても構わないが、耐熱性、機械的特性等を考慮すると光学異性体を有するポリ乳酸同士の組み合わせたポリ乳酸系樹脂の使用が好ましい。また、この生分解性シート基材自体に本発明の難燃性生分解性樹脂組成物を用いても構わない。
【００１１】
本発明の難燃性生分解性複合材料を製造する方法は、特に限定しない。本発明の難燃性生分解性樹脂組成物をコーティング材やラミネート材として用い、編織布、不織布、フィルム、紙等に、コーティング、ディッピング、ラミネート等の従来からある手法を用いて塗工、貼り合せ製造できる。
ただし本発明で用いる化学物質の内、複合材料に加工する際、その加工工程でその分解温度を超え分解する場合があるが、それらの化学物質については分解温度以上の温度状況に該当する化学物質が曝されない加工方法で製造することは言うまでもない。例えば尿素の分解温度は１３２℃なので、２００℃を超えるような高温でのフィルムの貼りあわせや熱セットが伴う加工方法は適さないが、コーティング剤や接着剤として生分解性シート基材にコーティングして分解温度以下の条件で乾燥して製造する方法が適する。
本発明の難燃性生分解性複合材料は自己消火性、難燃性を示す限界酸素指数は２６以上が好ましい。２６以下では自己消火性、難燃性な場合があるので好ましくない。
本発明によると、生分解性樹脂に難燃性能を付与させ、かつ使用後に土中や堆肥中に埋没すると、生分解性樹脂成分はバクテリア等の作用で分解し、残った化学物質は土壌を汚染するものではなく、農作物、園芸、植生等の肥料として有効に活用できる難燃性生分解性樹脂組成物及び難燃性生分解性複合材料を提供することができる。
【００１２】
【実施例】
次に本発明を実施例、比較例により具体的に説明する。
実施例１〜６、比較例１〜２
表１に記載した成分及び配合割合でタンブラーにより混合した後、３０ｍｍφの二軸ベント式押し出し機で溶融混錬り後ペレット化し、得られたペレットをＴダイ成形し、厚み２００μｍのフィルムを作成した。各特性の評価は以下の方法で実施し、評価結果は表１に記載した。
（１）燃焼性
ＪＩＳ Ｋ−７２１０指示方法の区分Ｂ−１号
（２）分解性
各サンプルをコンポスターに投入し、80℃×14日間放置し、試験後各試料の残存状態で評価した。
【００１３】
【表１】
表中の略号の説明
ＰＬＡ：ポリ−Ｌ−乳酸（光学純度９９．０％）
ＰＰＡ：ポリリン酸アンモニウム、ＴＥＲＲＡＪＵ Ｃ６０、ＴＥＲＲＡＪＵ Ｃ７０（チッソ株式会社製）
ＧＳＡ：スルファミン酸グアニジン、アピノン−１０１（三和ケミカル株式会社製）
ＧＰＡ：リン酸グアニジン、アピノン−３０１（三和ケミカル株式会社製）
ＤＤＡ：ジンシンジアミド、エピキュア ＤＩＣＹ７Ａ（ジャパンエポキシレジン株式会社製）
分解性：試験後の残渣が
ない：○
ある：×
表から各実施例は、本発明に規定した化学物質が１０部未満若しくは添加していない比較例２に比べ、限界酸素指数が２６以上であり、難燃性を有し、かつ分解性に支障もなかった。
【００１５】
実施例７〜１２、比較例２
表２に記載した成分及び配合割合でディスパーサーで混合分散させた後、樹脂液を、以下に示すポリ乳酸繊維織布にディッピング加工し、１２０℃×１分で熱処理し樹脂加工布を得た。各特性の評価は以下の方法で実施し、評価結果は表２に記載した。
（ポリ乳酸繊維織布）
1120dtex/192fil、強度4.0cN/dtex、伸度30%の共重合ポリ乳酸繊維を80T/mで４本合撚し、得られた糸条を経緯糸として用い、経糸密度20本/2.54cm、緯糸密度20本/2.54cmとして、2/2ななこ組織にて製織した。この織布の目付は600g/m2であった。
（１）燃焼性
ＪＩＳ Ｋ−７２１０指示方法の区分Ｂ−１号
（２）分解性
各サンプルをコンポスターに投入し、80℃×14日間放置し、試験後各試料の残存状態で評価した。
【００１６】
【表２】
表中の略号の説明
ＰＬＡ：共重合ポリ乳酸水分散体（ユニチカ株式会社製、固形分５０％、粘度３０００ｃｐｓ）
ＰＰＡ：ポリリン酸アンモニウム、ＴＥＲＲＡＪＵ Ｃ６０、ＴＥＲＲＡＪＵ Ｃ７０（チッソ株式会社製）
ＧＳＡ：スルファミン酸グアニジン、アピノン−１０１（三和ケミカル株式会社製）
ＧＰＡ：リン酸グアニジン、アピノン−３０１（三和ケミカル株式会社製）
ＤＤＡ：ジンシンジアミド、エピキュア ＤＩＣＹ７Ａ（ジャパンエポキシレジン株式会社製）
分解性：試験後の残渣が
ない：○
ある：×
表２から各実施例は本発明に規定した化学物質を添加していない比較例２と比べ、限界酸素指数が２６以上であり、難燃性を有し、かつ分解性に支障もなく加工時にも支障はなかった。
【００１８】
【発明の効果】
本発明によると優れた難燃性を有し、その難燃成分は肥料の主成分として用いられているものである難燃性生分解性樹脂組成物及び難燃性生分解性複合材料を提供することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a biodegradable resin composition that requires flame retardancy and a biodegradable composite material.
[0002]
[Prior art]
In recent years, biodegradable resins such as polylactic acid have attracted attention from the viewpoint of environmental conservation. For example, it is being used in the form of fibers, films, non-woven fabrics, coating agents, adhesives, molded articles, etc. in a wide range of fields such as agriculture, forestry and fisheries, architectural civil engineering, and food-related fields.
However, the biodegradable resin itself does not have strong flame retardancy, and in the current situation, it has not yet been technically established in a field that requires flame retardancy. Conventionally used halogen-based flame retardants have excellent flame retardancy. However, if a biodegradable resin using this as a flame retardant is buried in soil or compost to be biodegradable after use, it will contaminate the soil because halogenated substances that do not undergo biodegradation remain in the soil. There is a problem.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of such a current situation, has excellent flame retardancy, and the flame retardant component is used as a main component of fertilizer, a flame retardant biodegradable resin The object is to provide a composition and a flame-retardant biodegradable composite material.
[0004]
[Means for Solving the Problems]
The present invention solves the above-described problems and has the following configuration.
That is, the present invention
"1. Urea in biodegradable resin, ammonium phosphate, polyammonium polyphosphate, and a chemical substance selected from guanidine compounds, at least one flame retardant biodegradable resin composition which comprises A flame retardant biodegradable composite material coated with a lactic acid resin fiber woven fabric .
2. The flame retardant biodegradable composite material according to item 1, wherein the biodegradable resin is a polylactic acid resin.
3. The flame retardant biodegradable composite material according to item 1 or 2, wherein the limiting oxygen index is 26 or more. "
About.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
First, the flame-retardant biodegradable resin composition of the present invention will be described.
The biodegradable resin used in the flame retardant biodegradable resin composition of the present invention is not particularly limited, but an aliphatic polyester resin is preferable. Specifically, hydroxyalkyl carboxylic acids such as lactic acid, glycolic acid, and hydroxybutyl carboxylic acid lactate, aliphatic lactones such as glycolide, lactide, butyrolactone, and caprolactone, and aliphatic diols such as ethylene glycol, propylene glycol, butanediol, and hexanediol And a resin obtained by polymerizing polymerization raw materials such as aliphatic dicarboxylic acids such as succinic acid, adipic acid and sebacic acid. Among these, in view of heat resistance, mechanical properties, etc., it is particularly preferable to use a polylactic acid resin in which polylactic acids having optical isomers are combined.
[0006]
The chemical substance added to the biodegradable resin in the flame retardant biodegradable resin composition of the present invention contains at least one or more of urea, ammonium phosphate, ammonium polyphosphate, and guanidine compounds. These compounds are the main components of those used as fertilizers. Urea and ammonium phosphate are used as simple substances, and ammonium polyphosphate is used as the main component of fertilizer as a condensed phosphate system. Examples of those containing ammonium polyphosphate as a main component include host frames AP422, AP750, AP462 (manufactured by Clariant Japan Co., Ltd.), TERRAJUC60, C70, C80 (manufactured by Chisso Corporation), and the like. Examples of guanidine compounds include guanidine sulfamate (for example, apinone-101 (manufactured by Sanwa Chemical Co., Ltd.)), guanidine phosphate (for example, apinone-301 (manufactured by Sanwa Chemical Co., Ltd.)), dicyandiamide (for example, dicyandiamide). (Nippon carbide Co., Ltd.) and Epicure DICY7A, DICY15 (manufactured by Japan epoxy Resins Co., Ltd.)), guanidine carbonate, guanyl urea can be mentioned up, these can also be used as the main component of the fertilizer. These compounds may be added not only in one kind but also in plural kinds.
[0007]
In the case of urea, it dissolves at 132 ° C., and further heating causes the urea particles to condense and decompose each other. Therefore, the molding temperature of the composition containing urea is preferably less than 132 ° C. The urea itself is not particularly limited in its form such as powder and crystals, but powdered urea has good dispersion in the composition. Urea has a strong polarity and poor compatibility with thermoplastic polymers. Therefore, in order to improve the dispersion and increase the blending amount, the particle size is desirably 50 μm or less, and is in a powder form of 20 μm or less. Is preferred. Moreover, since powder urea becomes easy to deliquesce as a particle size becomes small, it becomes easy to produce blocking of the compositions of this invention. In order to prevent the blocking, a lubricant such as stearic acid having a melting point equal to or lower than the molding temperature and easily sublimating may be added.
The use of these chemical substances in the flame retardant biodegradable resin composition of the present invention is not only for imparting the flame retardancy of the biodegradable resin, but also a substance used as a main component of fertilizer Therefore, when the flame retardant biodegradable resin composition of the present invention is used and buried in soil or compost, the biodegradable resin component is decomposed by the action of bacteria and the like, and the remaining chemical substances are produced in crops, horticulture. This is because it can be effectively used as a fertilizer for vegetation.
[0008]
The method for adding the chemical substance defined in the present invention to the biodegradable resin in the present invention is not particularly limited, and a conventionally used addition method may be used. For example, in the case of fibers, films, molded articles, etc., chemical substances are mixed and melt-dispersed in biodegradable resin chips to finish each product. In the case of a coating agent, adhesive, etc., it may be dissolved or dispersed and used for coating or adhesion.
However, among the chemical substances used in the present invention, there are cases where the decomposition temperature exceeds the decomposition temperature by kneading or melting in the biodegradable resin. Needless to say, it is obtained by a manufacturing method in which the substance is not exposed. For example, since the decomposition temperature of urea is 132 ° C., a production method involving a kneading or melting process at a high temperature exceeding 200 ° C. is not suitable, but it is suitable to use it dissolved or dispersed in a coating agent or an adhesive.
[0009]
The total amount of chemical substances selected from urea, ammonium phosphate, ammonium polyphosphate, and guanidine compounds added to the biodegradable resin composition of the present invention is not particularly limited. What is necessary is just to mix | blend suitably considering the flame retardance requested | required and the physical requirement characteristic of resin. Generally, the added amount is 20 to 80 parts, and if it is less than 20 parts, it is difficult to obtain a flame-retardant effect, and if it exceeds 80 parts, physical properties such as material strength are adversely affected.
Further, in the present invention, the kind and amount of chemical substances specified in the present invention are appropriately selected, pigments, dyes, plasticizers, ultraviolet absorbers, light stabilizers, antioxidants, stabilizers, coupling agents, diluents, Thickeners, foaming agents, dispersants, antifoaming agents, antifungal agents, algaeproofing agents and the like can be used in combination.
The flame retardant biodegradable resin composition of the present invention preferably has a critical oxygen index of 26 or more, which exhibits self-extinguishing properties and flame retardancy. If it is 26 or less, self-extinguishing properties and flame retardancy may be insufficient.
[0010]
Next, the flame retardant biodegradable composite material of the present invention will be described.
The reason why the biodegradable sheet base material is used in the flame-retardant biodegradable composite material of the present invention is that the entire composite material needs to undergo biodegradation for the purpose of the present invention. The biodegradable sheet base material is not particularly limited, but it may be a natural fiber, a cellulosic fiber such as rayon, or a woven or knitted fabric or non-woven fabric made of biodegradable resin, or a biodegradable resin. A film or paper can be used.
Further, the biodegradable resin constituting the biodegradable sheet substrate may be the same as or different from that used in the flame-retardant biodegradable resin composition of the present invention. Considering characteristics and the like, it is preferable to use a polylactic acid resin in which polylactic acids having optical isomers are combined. Moreover, you may use the flame-retardant biodegradable resin composition of this invention for this biodegradable sheet base material itself.
[0011]
The method for producing the flame retardant biodegradable composite material of the present invention is not particularly limited. The flame retardant biodegradable resin composition of the present invention is used as a coating material or a laminate material, and is applied to a woven fabric, a nonwoven fabric, a film, paper, etc. by using a conventional method such as coating, dipping or laminating. Can be manufactured together.
However, among the chemical substances used in the present invention, when processing into a composite material, the decomposition process may exceed the decomposition temperature in the processing step, but for those chemical substances, the chemical substances corresponding to the temperature situation above the decomposition temperature Needless to say, it is manufactured by a processing method that does not expose the film. For example, since the decomposition temperature of urea is 132 ° C, processing methods involving film lamination and heat setting at a high temperature exceeding 200 ° C are not suitable, but the biodegradable sheet base material is coated as a coating agent or adhesive. Thus, a method of drying and producing under conditions below the decomposition temperature is suitable.
The flame retardant biodegradable composite material of the present invention preferably has a critical oxygen index of 26 or more indicating self-extinguishing properties and flame retardancy. If it is 26 or less, it may be self-extinguishing or flame retardant, which is not preferable.
According to the present invention, when the biodegradable resin is imparted with flame retardancy and is buried in soil or compost after use, the biodegradable resin component is decomposed by the action of bacteria, etc., and the remaining chemical substances are removed from the soil. A flame-retardant biodegradable resin composition and a flame-retardant biodegradable composite material that can be effectively used as fertilizers for farm products, horticulture, vegetation, etc., without being contaminated can be provided.
[0012]
【Example】
Next, the present invention will be specifically described with reference to examples and comparative examples.
Examples 1-6, Comparative Examples 1-2
After mixing by the tumbler at the components and blending ratios shown in Table 1, the mixture was melt-kneaded with a 30 mmφ biaxial vent type extruder and pelletized, and the resulting pellet was T-die molded to create a film with a thickness of 200 μm. . Each characteristic was evaluated by the following method, and the evaluation results are shown in Table 1.
(1) Flammability JIS K-7210 Instruction method category B-1 (2) Decomposable Each sample was put into a composter, allowed to stand at 80 ° C. for 14 days, and evaluated in the remaining state of each sample after the test.
[0013]
[Table 1]
Explanation of abbreviations in the table PLA: Poly-L-lactic acid (optical purity 99.0%)
PPA: ammonium polyphosphate, TERRAJU C60, TERRAJU C70 (manufactured by Chisso Corporation)
GSA: Guanidine sulfamate, Apinon-101 (manufactured by Sanwa Chemical Co., Ltd.)
GPA: guanidine phosphate, Apinon-301 (manufactured by Sanwa Chemical Co., Ltd.)
DDA: Ginsindiamide, EpiCure DICY7A (manufactured by Japan Epoxy Resin Co., Ltd.)
Degradability: No residue after test: ○
Yes: ×
From the table, each example has a limiting oxygen index of 26 or more, has flame retardancy, and has an adverse effect on degradability as compared with Comparative Example 2 in which the chemical substance defined in the present invention is less than 10 parts or not added. There was not.
[0015]
Examples 7-12, Comparative Example 2
After mixing and dispersing with a disperser at the components and blending ratios shown in Table 2, the resin solution was dipped into the polylactic acid fiber woven fabric shown below, and heat treated at 120 ° C. for 1 minute to obtain a resin processed fabric. . Each characteristic was evaluated by the following method, and the evaluation results are shown in Table 2.
(Polylactic acid fiber woven fabric)
1120dtex / 192fil, strength 4.0cN / dtex, 30% elongation copolymer polylactic acid fiber 4 twisted at 80T / m, using the obtained yarn as warp weft, warp density 20 / 2.54cm, The weft density was 20 / 2.54 cm, and weaved with a 2/2 nanako structure. The basis weight of this woven fabric was 600 g / m 2 .
(1) Flammability JIS K-7210 Instruction method category B-1 (2) Decomposable Each sample was put into a composter, allowed to stand at 80 ° C. for 14 days, and evaluated in the remaining state of each sample after the test.
[0016]
[Table 2]
Explanation of abbreviations in the table PLA: Copolymerized polylactic acid aqueous dispersion (manufactured by Unitika Ltd., solid content 50%, viscosity 3000 cps)
PPA: ammonium polyphosphate, TERRAJU C60, TERRAJU C70 (manufactured by Chisso Corporation)
GSA: Guanidine sulfamate, Apinon-101 (manufactured by Sanwa Chemical Co., Ltd.)
GPA: guanidine phosphate, Apinon-301 (manufactured by Sanwa Chemical Co., Ltd.)
DDA: Ginsindiamide, EpiCure DICY7A (manufactured by Japan Epoxy Resin Co., Ltd.)
Degradability: No residue after test: ○
Yes: ×
From Table 2, each example has a limiting oxygen index of 26 or more, has flame retardancy, and has no problem in degradability during processing as compared with Comparative Example 2 in which no chemical substance defined in the present invention is added. There was no problem.
[0018]
【The invention's effect】
According to the present invention, there are provided a flame retardant biodegradable resin composition and a flame retardant biodegradable composite material which have excellent flame retardancy and the flame retardant component is used as a main component of fertilizer. can do.
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| JP4997704B2 (en) | 2005-02-24 | 2012-08-08 | 富士ゼロックス株式会社 | Surface-coated flame-retardant particles and production method thereof, and flame-retardant resin composition and production method thereof |
| JP5124802B2 (en) * | 2006-03-02 | 2013-01-23 | 信越化学工業株式会社 | Flame retardant bioplastic resin composition |
| US7683117B2 (en) | 2007-02-02 | 2010-03-23 | Fuji Xerox Co., Ltd. | Resin composition, resin mold and method for producing the same |
| US7767744B2 (en) | 2007-03-30 | 2010-08-03 | Fuji Xerox Co., Ltd. | Resin composition, resin compact, production method of resin compact and recycling method of resin compact |
| WO2009130904A1 (en) * | 2008-04-23 | 2009-10-29 | ユニチカ株式会社 | Flame retardant poly(lactic acid)-based resin composition and moulded material using the same |
| DE102008051579A1 (en) | 2008-10-14 | 2010-04-15 | Rhodia Acetow Gmbh | Biodegradable plastic and use thereof |
| JP5493999B2 (en) * | 2010-02-25 | 2014-05-14 | 富士ゼロックス株式会社 | Polylactic acid-based resin composition, method for producing polylactic acid-based resin composition, and polylactic acid-based resin molded article |
| JP5482695B2 (en) * | 2011-03-09 | 2014-05-07 | 株式会社リコー | Flame retardant composition |
| JP5902933B2 (en) * | 2011-09-22 | 2016-04-13 | ユニチカ株式会社 | Polylactic acid resin composition |
| CN104086961B (en) * | 2014-07-01 | 2016-03-02 | 南京理工大学 | A kind of flame-proof heat-resistant strengthens poly (lactic acid) composition and preparation method thereof |
| CN106566215B9 (en) * | 2016-10-28 | 2020-05-22 | 国网河南省电力公司电力科学研究院 | Flame-retardant polylactic acid composite material and preparation method thereof |
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