JP2004224960A - Flame retardant paint composition and flame retardant base material having coating film of the composition - Google Patents

Flame retardant paint composition and flame retardant base material having coating film of the composition Download PDF

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Publication number
JP2004224960A
JP2004224960A JP2003016036A JP2003016036A JP2004224960A JP 2004224960 A JP2004224960 A JP 2004224960A JP 2003016036 A JP2003016036 A JP 2003016036A JP 2003016036 A JP2003016036 A JP 2003016036A JP 2004224960 A JP2004224960 A JP 2004224960A
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Prior art keywords
flame retardant
coating composition
flame
base material
component
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JP2003016036A
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Japanese (ja)
Inventor
Masaaki Mihara
真明 三原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DIC Corp
Original Assignee
Dainippon Ink and Chemicals Co Ltd
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Filing date
Publication date
Application filed by Dainippon Ink and Chemicals Co Ltd filed Critical Dainippon Ink and Chemicals Co Ltd
Priority to JP2003016036A priority Critical patent/JP2004224960A/en
Publication of JP2004224960A publication Critical patent/JP2004224960A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating composition which has an effect of retarding the burning of a plastic base material and to provide a flame retardant base material having a hardened coating film of the coating composition on a surface of a base material. <P>SOLUTION: The flame retardant coating composition comprises a flame retardant component, a resin component as a binder and a filler component containing an inflatable graphite having a swelling property. The flame retardant base material has a dry-hardened coating film layer of the coating composition on a base material made of plastics. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、プラスチック基材の燃焼を遅延させる効果を有する塗料組成物及び基材表面に該塗料組成物の硬化塗膜を有する難燃性プラスチック基材に関する。
【0002】
【従来の技術】
従来から、難燃剤を含有する、難燃乃至は燃焼遅延効果を有する塗料組成物が知られている。例えば、加熱時の発泡剤の作用により、断熱効果を示し、更なる燃焼遅延効果を得ている方法が提案されている(例えば、特許文献1参照)。しかしながら同時に、加熱により樹脂成分の収縮が発生するため、発泡し、体積の増加した塗膜も再度収縮し、断熱効果を阻害する傾向にある。又、鋼板用途として膨張性フィラーを含む2液型の厚膜の耐火被覆膜が提案されている(例えば、特許文献2参照)。しかしながら、難燃塗膜の膜厚を厚くすると、断熱効果には優れるものの、特に、プラスチック用途としては、機械的強度が低下し、剥がれ易くなる点で、更に改良された塗料、塗膜が求められている。
【0003】
【特許文献1】
特開平6−73497号公報
【特許文献2】
特開平8−48554号公報
【0004】
【発明が解決しようとする課題】
本発明の課題は、プラスチック基材の燃焼を遅延させる効果を有する塗料組成物及び基材表面に該塗料組成物の硬化塗膜を有する難燃性プラスチック基材を提供する。
【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、フィラー成分の中に発泡性を有する膨張性黒鉛を含有させることで、加熱により黒鉛が急激に膨張しプラスチックの燃焼速度を低下させ、また、ポリプロピレンのような熱可塑性樹脂の熱による溶融落下を阻害する効果が顕著であることを見出し、本発明に至った。
【0006】
すなわち、本発明は第一に、難燃剤成分、バインダー樹脂成分、フィラー成分を含有する難燃性塗料組成物であって、該フィラー成分が発泡性を有する膨張性黒鉛を含有することを特徴とする難燃性塗料組成物を提供する。
【0007】
本発明は、第二に、プラスチック製の基材上に、前記塗料組成物の乾燥硬化塗膜層を有することを特徴とする難燃性基材を提供する。
【0008】
本発明は、上記手段により、無機燐酸塩と膨張性黒鉛の相乗効果で難燃性を持たせることを特徴とする難燃性塗料組成物を提供することができる。
【0009】
【発明の実施の形態】
本発明の、難燃性塗料組成物は、難燃剤成分、バインダー樹脂成分、フィラー成分を含有する難燃性塗料組成物であって、膨張性黒鉛を含有させることで、約150℃以上で容易に発泡し、発泡物の形態が塗膜に対してほぼ垂直方向に樹木状に配置するため、熱可塑性の基材を用いた場合に、基材の溶融物が塗面上を流出する際に、溶融物の一部が発泡体に当たり堰き止められることが確認された。また、発泡率も20−50倍となるため、熱伝導率を低下させ、直火が直接基材に当たることをかなり抑制できる。更に、該フィラー成分の中に偏平状の成分を含有させることで塗膜強度を高めるとともに発泡性を容易にさせる。
【0010】
本発明の難燃性塗料組成物に使用する難燃剤としては無機燐酸塩系、燐酸エステル系、アンチモン系、ハロゲン系、硼酸系等の難燃剤を用いることが出来る。これらの内で、環境負荷の観点から、ハロゲン系やアンチモン系は避けた方が好ましく、無機燐酸塩系がより好ましく用いられる。又、複数併用しても良い。具体的には、燐酸水素アンモニウム、ポリ燐酸アンモニウム等が用いられる。
【0011】
難燃剤の配合量は、難燃性塗料組成物中で、5〜35質量%程度が好ましく、10〜20質量%がより好ましい。又、不揮発分中では、20〜70質量%程度が好ましく、20〜50質量%がより好ましい。
【0012】
本発明の難燃性塗料組成物に使用するバインダー樹脂成分としては、線状構造の熱可塑性アクリル樹脂、熱硬化性アクリル樹脂、ポリアミド樹脂等が用いられ、前記した難燃剤成分を充分分散出来、作業性の面から一液型の樹脂が望ましい。ただし、基材樹脂が熱可塑性の樹脂のみだと基材が溶融した際に溶融物が下に垂れやすく、それが引火して火災を大きくすることが多い。この現象は塗膜に用いる樹脂を熱硬化型にすることである程度抑制される。このため一部熱硬化性の樹脂とメラミンを併用することが望ましい。
【0013】
これらの内で、機械的に過酷な扱いに供されるような用途に於いては、密着性、耐候性、耐水性等の観点から、エポキシ、アクリル、水性エマルジョン等が好ましい。エポキシの場合は硬化剤としてポリアミンを用いることで常温硬化できるが二液型となるために混合後の塗料は可使時間の制約を受ける。アクリルの場合、一液化できるためより好ましく用いられる。アクリルのモノマー組成、分子量等の調整により熱可塑型アクリル単独でも可能な場合もある。熱による塗膜の変形をできるだけ抑えたい場合は、熱硬化型アクリル、メラミンを一部併用することが好ましい。また、緻密な炭化層を形成させる目的でさらにポリアミン、ポリアミド類を併用することも可能であるが、一液型として常温硬化しにくくなるので、
硬化性とのバランスで添加量を決めることが望ましい。
【0014】
線状アクリル樹脂用モノマーとしてはメチルアクリレート、エチルアクリレート、n−ブチルアクリレート、メチルメタクリレート、エチルメタクリレート、n−ブチルメタアクリレート、2−ヒドロキシエチルアクリレート、2−ヒドロキシエチルメタクリレート、グリシジルメタクリレート、スチレン等があげられる。難燃性を持たせるためにはとくにメチルメタクリレートを含有するものが好ましい。分子量は50000〜100000程度が好ましい。樹脂固形分中のアクリルの固形分の含有量は、20〜100質量%が好ましい。
【0015】
また、ポリアミド樹脂のモノマーとしては各種脂肪族ジカルボン酸と脂肪族ジアミンの縮合反応で得られる脂肪族アミンを使用し、相溶性、作業性等の問題から分子量が2000〜5000程度の樹脂が好ましい。ポリアミドは樹脂固形分中の50質量%以下で用いることが出来る。ポリアミドとアクリルを併用する場合は、ポリアミドとアクリルの固形分中、アクリル30〜50質量%、ポリアミド50〜70質量%が好ましい。
【0016】
本発明の難燃性塗料組成物に使用するフィラー成分は、膨張性黒鉛を有することを特徴としている。
【0017】
膨張性黒鉛は膨張効果を発揮するために粒径が1mm以上のものが好ましい。一方、物性、塗装性、意匠性等の観点からは一般的に粒径の細かいものが望ましいため、できるだけ1mmに近いものを使用するのが好ましい。
【0018】
フィラーの形状としては、偏平状、粒状、針状等の形状があり、フィラー成分として、膨張性黒鉛の他に、少なくとも偏平状形状を有するフィラーを含有することが好ましい。なお、着色するために着色顔料(チタン白、弁柄等)を併用することも可能である。本発明に使用できるフィラーを形状別に分けると下記の通りである。
【0019】
偏平状のフィラーとしては、マイカ、タルク、カオリン等が挙げられる。偏平状の面方向での平均粒径は、1〜30μm程度が好ましい。より好ましくは、1〜15μm程度である。
【0020】
粒状のフィラーとしては、炭酸カルシウム、シラスバルーン等が挙げられる。粒状フィラーの平均粒径は、1〜30μm程度が好ましい。より好ましくは、1〜20μm程度である。
【0021】
針状のフィラーとしては、ガラス繊維、ウォラストナイト等が挙げられる。長手方向での平均長さは、10〜100μm程度が好ましい。より好ましくは、10〜50μm程度である。針の直径としては、平均5〜20μm程度が好ましい。より好ましくは、5〜15μm程度である。
【0022】
バインダー樹脂成分に対する難燃剤成分の含有量の比は、20〜40質量%程度が好ましく、30〜40質量%がより好ましい。
【0023】
本発明の難燃性塗料組成物に用いられる溶剤としては、芳香族系、エステル系、ケトン系を混合または単独で用いることが出来るが、ポリアミド系樹脂が多い場合はケトン系溶剤をふやすことが望ましい。
【0024】
本発明の難燃性塗料組成物には、他に、追加の発泡剤、分散剤、消泡剤、レベリング剤、抗菌剤、防黴剤等の添加剤を用いることが出来る。
【0025】
製造方法については、膨張性黒鉛のみ膨張性を維持させるためにサンドミル、3本ロール等の練肉機の使用は避ける。したがって、その他のフィラー、樹脂についてのみ練肉し、練肉後のミルベースに膨張性黒鉛を混合させるのが望ましい。
塗膜外観の粗度が要求されない場合はすべての原料を混合、撹拌するだけでも十分である。
【0026】
塗工方式としては、スプレーコート方式が好ましく用いることができる。ただし、当該塗料の粘度が高い場合や、とくに厚膜で塗装する場合は、エアレススプレー方式が望ましい。塗装粘度はフィラーを多く含むため高粘度であり、概ね1〜10Pa・sである。希釈率はあまり高くない方が好ましく、20%以下の希釈が好ましい。なお、被塗物の形状によっては特殊なガンが必要とされる場合がある。
【0027】
【実施例】
以下に、実施例を用いて、本発明を具体的に説明するが、本発明の範囲はこれらの実施例に限定するものではない。部及び%は特に断らない限り質量部、質量%を表すものとする。実施例および比較例で使用した各成分の詳細は、以下の通りである。
【0028】
(A.バインダー樹脂)
バインダー1;一液型変性アクリル樹脂、固形分40%
(大成化工(株)製 1DY513)
バインダー2;ポリアミド樹脂、固形分50%
(大日本インキ化学工業(株)製 ラッカマイドTD961)
バインダー3;熱硬化型アクリル樹脂、固形分60%
(大日本インキ化学工業(株)製 アクリディックVU−886)
バインダー4;硬化剤、固形分100%
(三井サイテック(株)製 サイメル235)
【0029】
(B.フィラー)
フィラー1;炭酸カルシウム(粒径1〜30μm、三共精粉(株)製 タンカルA)
フィラー2.タルク(粒径12μm、富士タルク工業(株)製 LMR)
フィラー3.ガラス繊維(直径13μm、長さ35μm、日本板ガラス製(株)サーフェスト)
フィラー4.膨張性黒鉛(長軸1mm、(株)鈴裕化学製 GREP−EG)
【0030】
(C.難燃剤)
難燃剤1.ポリリン酸アンモニウム
【0031】
(D.発泡剤)
発泡剤1.アゾジカルボンアミド(永和化成工業(株)製ビニホールFE788)
【0032】
(E.溶剤)
溶剤1.シクロヘキサノン
溶剤2.メチルエチルケトン
【0033】
以下の実施例および比較例における試験片の性能は、下記に示す方法により判定した。
【0034】
(難燃性性能評価方法)
【0035】
(株)東洋精機製作所製 コーンカロリーメータIIIに10×10cmのパネルを入れ、加熱燃焼させたときの最大発熱速度等を測定解析する。発熱速度は、物が燃焼するときに発生する熱量を単位時間、単位面積当たりの値で表したものである(単位:kw/m)。最大発熱速度は発熱速度のピーク値(最大値)を指す。
【0036】
(密着性試験)
PP基材等の面にデュポン衝撃(1/2インチ×1kg×50cm)を行い、塗膜塗装面側にテープを当て、テープ剥離評価する。まったく剥離しない場合を(○)、わずかに剥離したときを(△)、顕著な剥離が認められたものを(×)とした。
【0037】
(水浸漬試験)
試験体を水道水中に全没浸漬を行い、20日間放置後に取り出し、48時間常温にて乾燥後に碁盤目セロハン粘着テープ試験を行う。剥離した個数を升目100当たりの個数で表示した。
【0038】
(PP漏洩性試験)
PP漏洩性とは、基材に使用したポリプロピレンが熱によって溶融し、平板の端から漏洩、落下する度合いを指す。以下の3段階で示した。
○:ほとんど漏洩しない
△:断続的に漏洩落下する
×:連続して漏洩落下する
【0039】
前記した各成分を用い、表1に示す配合例1〜6の各塗料を作製した。表1は、不揮発成分の相対量を示す。評価結果を表2、3に示す。尚、PP材に塗装する場合、塗膜との密着性が非常に悪いために、本試験においてはプライマーを使用した。プライマーはポリオレフィン系の樹脂(日本製紙(株)製スーパークロン851L)を用い、フィラーは密着性を低下させる傾向があるため未添加とした。粘度調整用にキシレン/酢酸エチル=50/50もしくは類似したシンナーで適宜希釈し、粘度は0.01〜0.3Pa・s程度の低めの粘度にした。塗装はスプレー塗装で行った。膜厚は2〜15μmの範囲で諸物性との関連で適性膜厚を設定する。乾燥は常温乾燥であるが、60℃以下の温度で乾燥を促進することも可能である。上塗り塗装はプライマーを塗った直後でも、乾燥後でも良い。上塗り塗料は常温乾燥であるが、必要に応じて加熱乾燥(30〜60℃)しても良い。ただし、PP基材のような熱可塑性樹脂を使用した場合、樹脂が軟化する温度より低い温度でないと反り等を発生する恐れがある。また、密着性等の性能は常温乾燥の場合、単に指触乾燥程度の乾燥時間(24〜48時間程度)では不十分であり、少なくとも1週間、できれば2、3週間程度の期間を要する。
【0040】
【表1】

Figure 2004224960
【0041】
【表2】
Figure 2004224960
【0042】
【表3】
Figure 2004224960
【0043】
【発明の効果】
本発明の難燃性塗料組成物は、プラスチック素材に適用した場合、被塗物が着火源より十分大きい場合において、プラスチック素材単体はもとより、従来の難燃性塗料に比べ、着火燃焼までに至る時間を遅延させる効果に優れた性能を有する。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coating composition having an effect of delaying combustion of a plastic substrate and a flame-retardant plastic substrate having a cured coating film of the coating composition on the surface of the substrate.
[0002]
[Prior art]
BACKGROUND ART Heretofore, coating compositions containing a flame retardant and having a flame retardant or combustion retarding effect have been known. For example, there has been proposed a method of exhibiting a heat insulating effect by the action of a foaming agent at the time of heating and obtaining a further combustion delay effect (for example, see Patent Document 1). However, at the same time, since the resin component shrinks due to the heating, the coating film that has foamed and increased in volume also shrinks again, and tends to hinder the heat insulating effect. Further, a two-component thick refractory coating film containing an expandable filler has been proposed for use as a steel sheet (for example, see Patent Document 2). However, when the thickness of the flame-retardant coating film is increased, the heat insulating effect is excellent, but in particular, for plastic applications, the mechanical strength is reduced and the coating film is more easily improved because it is easily peeled off. Have been.
[0003]
[Patent Document 1]
JP-A-6-73497 [Patent Document 2]
JP-A-8-48554
[Problems to be solved by the invention]
An object of the present invention is to provide a coating composition having an effect of delaying combustion of a plastic substrate and a flame-retardant plastic substrate having a cured coating film of the coating composition on the surface of the substrate.
[0005]
[Means for Solving the Problems]
The present inventors have conducted intensive studies and found that by including expandable graphite having expandability in the filler component, the graphite expands rapidly due to heating, lowering the burning rate of plastics, and, like polypropylene. The present inventors have found that the effect of inhibiting the melting and dropping of a thermoplastic resin due to heat is remarkable, and have reached the present invention.
[0006]
That is, the present invention is, first, a flame retardant coating composition containing a flame retardant component, a binder resin component, and a filler component, wherein the filler component contains expandable graphite having expandability. To provide a flame-retardant coating composition.
[0007]
Secondly, the present invention provides a flame-retardant substrate characterized by having a dry-cured coating layer of the coating composition on a plastic substrate.
[0008]
The present invention can provide a flame-retardant coating composition characterized by imparting flame retardancy by a synergistic effect of an inorganic phosphate and expandable graphite by the above means.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The flame-retardant paint composition of the present invention is a flame-retardant paint composition containing a flame retardant component, a binder resin component, and a filler component, and is easily heated at about 150 ° C. or more by containing expandable graphite. In the case of using a thermoplastic base material, when the molten material of the base material flows out on the coated surface, the form of the foam is arranged like a tree in a direction substantially perpendicular to the coating film. It was confirmed that a part of the melt hit the foam and was blocked. Further, since the foaming ratio is also 20 to 50 times, the thermal conductivity is reduced, and it is possible to considerably suppress the direct fire from directly hitting the base material. Furthermore, by including a flat component in the filler component, the strength of the coating film is increased and the foamability is facilitated.
[0010]
As the flame retardant used in the flame retardant coating composition of the present invention, flame retardants such as inorganic phosphate, phosphoric ester, antimony, halogen and boric acid can be used. Of these, from the viewpoint of environmental load, it is preferable to avoid halogens and antimony, and inorganic phosphates are more preferably used. Also, a plurality of them may be used in combination. Specifically, ammonium hydrogen phosphate, ammonium polyphosphate and the like are used.
[0011]
The compounding amount of the flame retardant is preferably about 5 to 35% by mass, more preferably 10 to 20% by mass in the flame retardant coating composition. Further, in the non-volatile content, it is preferably about 20 to 70% by mass, more preferably 20 to 50% by mass.
[0012]
As the binder resin component used in the flame retardant coating composition of the present invention, a thermoplastic acrylic resin having a linear structure, a thermosetting acrylic resin, a polyamide resin, or the like is used, and the flame retardant component can be sufficiently dispersed, From the viewpoint of workability, one-pack type resin is desirable. However, when the base resin is only a thermoplastic resin, when the base material is melted, the melt easily falls down, which often ignites and increases the fire. This phenomenon can be suppressed to some extent by using a thermosetting resin for the coating film. For this reason, it is desirable to use a thermosetting resin and melamine together.
[0013]
Among them, epoxy, acryl, aqueous emulsion and the like are preferable from the viewpoints of adhesion, weather resistance, water resistance and the like in applications where mechanically severe handling is performed. Epoxy can be cured at room temperature by using a polyamine as a curing agent, but since it becomes a two-pack type, the paint after mixing is restricted in the pot life. Acrylic is more preferably used because it can be made into one liquid. In some cases, thermoplastic acrylic alone can be used by adjusting the acrylic monomer composition, molecular weight, and the like. When it is desired to suppress deformation of the coating film due to heat as much as possible, it is preferable to partially use thermosetting acrylic and melamine. In addition, for the purpose of forming a dense carbonized layer, it is possible to further use a polyamine and a polyamide together, but since it is difficult to cure at room temperature as a one-part type,
It is desirable to determine the amount of addition in balance with curability.
[0014]
Examples of the monomer for a linear acrylic resin include methyl acrylate, ethyl acrylate, n-butyl acrylate, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, glycidyl methacrylate, and styrene. Can be For imparting flame retardancy, those containing methyl methacrylate are particularly preferable. The molecular weight is preferably about 50,000 to 100,000. The content of the acryl solid content in the resin solid content is preferably 20 to 100% by mass.
[0015]
In addition, as a monomer of the polyamide resin, an aliphatic amine obtained by a condensation reaction of various aliphatic dicarboxylic acids and an aliphatic diamine is used, and a resin having a molecular weight of about 2,000 to 5,000 is preferable in terms of compatibility, workability, and the like. The polyamide can be used at 50% by mass or less in the resin solid content. When a polyamide and an acryl are used in combination, 30 to 50% by mass of an acryl and 50 to 70% by mass of a polyamide are preferable in the solid content of the polyamide and the acryl.
[0016]
The filler component used in the flame-retardant coating composition of the present invention is characterized by having expandable graphite.
[0017]
The expandable graphite preferably has a particle size of 1 mm or more in order to exhibit an expanding effect. On the other hand, from the viewpoints of physical properties, coating properties, design properties, etc., it is generally desirable that the particles have a fine particle size. Therefore, it is preferable to use ones as close as possible to 1 mm.
[0018]
The filler has a shape such as a flat shape, a granular shape, and a needle shape, and preferably contains at least a filler having a flat shape as a filler component in addition to the expandable graphite. In addition, it is also possible to use a coloring pigment (titanium white, red iron oxide, etc.) in combination for coloring. The fillers that can be used in the present invention are classified as follows according to their shapes.
[0019]
Examples of the flat filler include mica, talc, kaolin and the like. The average particle diameter in the flat surface direction is preferably about 1 to 30 μm. More preferably, it is about 1 to 15 μm.
[0020]
Examples of the granular filler include calcium carbonate and shirasu balloon. The average particle size of the granular filler is preferably about 1 to 30 μm. More preferably, it is about 1 to 20 μm.
[0021]
Examples of the needle-like filler include glass fiber and wollastonite. The average length in the longitudinal direction is preferably about 10 to 100 μm. More preferably, it is about 10 to 50 μm. The diameter of the needle is preferably about 5 to 20 μm on average. More preferably, it is about 5 to 15 μm.
[0022]
The ratio of the content of the flame retardant component to the binder resin component is preferably about 20 to 40% by mass, and more preferably 30 to 40% by mass.
[0023]
As the solvent used in the flame-retardant coating composition of the present invention, an aromatic type, an ester type, or a ketone type can be mixed or used alone. desirable.
[0024]
The flame-retardant coating composition of the present invention may further contain additives such as an additional foaming agent, dispersant, defoamer, leveling agent, antibacterial agent, and fungicide.
[0025]
Regarding the production method, use of a meat mill such as a sand mill and three rolls is avoided in order to maintain the expandability of only the expandable graphite. Therefore, it is desirable to mix only the other fillers and resins, and to mix the mill base after the mixing with the expandable graphite.
When the roughness of the appearance of the coating film is not required, it is sufficient to mix and stir all the raw materials.
[0026]
As a coating method, a spray coat method can be preferably used. However, when the viscosity of the paint is high, or particularly when the paint is applied with a thick film, the airless spray method is preferable. The coating viscosity is high because it contains a large amount of filler, and is generally 1 to 10 Pa · s. It is preferable that the dilution ratio is not so high, and a dilution of 20% or less is preferable. A special gun may be required depending on the shape of the object to be coated.
[0027]
【Example】
Hereinafter, the present invention will be described specifically with reference to Examples, but the scope of the present invention is not limited to these Examples. Parts and% represent parts by mass and% by mass, respectively, unless otherwise specified. Details of each component used in Examples and Comparative Examples are as follows.
[0028]
(A. Binder resin)
Binder 1; one-pack type modified acrylic resin, solid content 40%
(1DY513 manufactured by Taisei Kako Co., Ltd.)
Binder 2: polyamide resin, solid content 50%
(Lacamide TD961 manufactured by Dainippon Ink and Chemicals, Inc.)
Binder 3: thermosetting acrylic resin, solid content 60%
(Acrydic VU-886 manufactured by Dainippon Ink and Chemicals, Inc.)
Binder 4; curing agent, solid content 100%
(Mitsui Cytec Co., Ltd. Cymel 235)
[0029]
(B. Filler)
Filler 1; calcium carbonate (particle size 1 to 30 μm, Tankal A manufactured by Sankyo Seiko Co., Ltd.)
Filler 2. Talc (particle size: 12 μm, LMR manufactured by Fuji Talc Industry Co., Ltd.)
Filler 3. Glass fiber (diameter 13 μm, length 35 μm, Nippon Sheet Glass Co., Ltd. Surfacet)
Filler 4. Expandable graphite (long axis 1 mm, GREP-EG manufactured by Suzuhiro Chemical Co., Ltd.)
[0030]
(C. Flame retardant)
Flame retardant 1. Ammonium polyphosphate [0031]
(D. Foaming agent)
Blowing agent 1. Azodicarbonamide (Vinihole FE788 manufactured by Eiwa Chemical Co., Ltd.)
[0032]
(E. Solvent)
Solvent 1. 1. cyclohexanone solvent Methyl ethyl ketone [0033]
The performance of the test pieces in the following examples and comparative examples was determined by the following method.
[0034]
(Flame retardancy evaluation method)
[0035]
A 10 × 10 cm panel is inserted into a cone calorimeter III manufactured by Toyo Seiki Seisaku-sho, Ltd., and the maximum heat generation rate when heated and burned is measured and analyzed. The heat generation rate is the amount of heat generated when an object is burned, expressed as a value per unit time and per unit area (unit: kw / m 2 ). The maximum heat generation rate indicates the peak value (maximum value) of the heat generation rate.
[0036]
(Adhesion test)
A DuPont impact (1 / inch × 1 kg × 50 cm) is applied to the surface of the PP base material or the like, a tape is applied to the coating surface, and the tape is peeled off. The case where no peeling was observed at all (○), the case where slight peeling was observed (△), and the case where remarkable peeling was observed were evaluated as (×).
[0037]
(Water immersion test)
The test specimen is completely immersed in tap water, taken out after standing for 20 days, dried at room temperature for 48 hours, and then subjected to a cross-cut cellophane adhesive tape test. The number of peeled pieces is represented by the number per 100 squares.
[0038]
(PP leak test)
PP leakage refers to the degree to which the polypropylene used for the base material is melted by heat and leaks and falls from the edge of the flat plate. The following three stages are shown.
:: Almost no leakage △: Intermittent leakage and falling ×: Continuous leakage and falling [0039]
Using each of the components described above, paints of Formulation Examples 1 to 6 shown in Table 1 were produced. Table 1 shows the relative amounts of the non-volatile components. The evaluation results are shown in Tables 2 and 3. In addition, when coating on a PP material, a primer was used in this test because adhesion to a coating film was extremely poor. As the primer, a polyolefin-based resin (Supercron 851L manufactured by Nippon Paper Industries Co., Ltd.) was used, and the filler was not added because it tends to lower the adhesion. For viscosity adjustment, xylene / ethyl acetate = 50/50 or a similar thinner was used to appropriately dilute the solution to a lower viscosity of about 0.01 to 0.3 Pa · s. Painting was performed by spray painting. An appropriate thickness is set in the range of 2 to 15 μm in relation to various physical properties. Drying is room temperature drying, but drying can be accelerated at a temperature of 60 ° C. or lower. The top coat may be applied immediately after applying the primer or after drying. The top coat is dried at room temperature, but may be dried by heating (30 to 60 ° C.) if necessary. However, when a thermoplastic resin such as a PP base material is used, there is a possibility that warping or the like may occur unless the temperature is lower than the temperature at which the resin softens. In addition, in the case of drying at room temperature, the drying time (approximately 24 to 48 hours) of the order of touch-drying is not sufficient in the case of drying at room temperature, and requires a period of at least one week, preferably a few weeks.
[0040]
[Table 1]
Figure 2004224960
[0041]
[Table 2]
Figure 2004224960
[0042]
[Table 3]
Figure 2004224960
[0043]
【The invention's effect】
The flame-retardant paint composition of the present invention, when applied to a plastic material, when the object to be coated is sufficiently larger than the ignition source, not only the plastic material alone, but also compared to the conventional flame-retardant paint, until ignition combustion. It has excellent performance to delay the time it takes.

Claims (6)

難燃剤成分、バインダー樹脂成分、フィラー成分を含有する難燃性塗料組成物であって、該フィラー成分が発泡性を有する膨張性黒鉛を含有することを特徴とする難燃性塗料組成物。A flame-retardant coating composition containing a flame retardant component, a binder resin component, and a filler component, wherein the filler component contains expandable graphite having expandability. 前記したフィラー成分の少なくとも1種が、偏平状のフィラーである請求項1に記載の塗料組成物。The coating composition according to claim 1, wherein at least one of the filler components is a flat filler. 前記した難燃剤成分が、無機燐酸塩系難燃剤である請求項1に記載の塗料組成物。The coating composition according to claim 1, wherein the flame retardant component is an inorganic phosphate flame retardant. 前記したバインダー樹脂成分が、線状構造の熱可塑性アクリル樹脂、熱硬化性アクリル樹脂、ポリアミド樹脂の何れか一種以上を含有する請求項1に記載の塗料組成物。The coating composition according to claim 1, wherein the binder resin component contains at least one of a thermoplastic acrylic resin, a thermosetting acrylic resin, and a polyamide resin having a linear structure. プラスチック製の基材上に、前記塗料組成物の乾燥硬化塗膜層を有することを特徴とする難燃性基材。A flame-retardant substrate comprising a plastic substrate having a dried and cured coating layer of the coating composition. プラスチック製基材がプラスチックパレットである請求項5に記載の難燃性基材。The flame-retardant substrate according to claim 5, wherein the plastic substrate is a plastic pallet.
JP2003016036A 2003-01-24 2003-01-24 Flame retardant paint composition and flame retardant base material having coating film of the composition Pending JP2004224960A (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
KR100996720B1 (en) 2010-08-19 2010-11-25 박노옥 Composition for forming non-flammable coating and non-flammable coating obtained therefrom
US8178449B2 (en) * 2009-07-17 2012-05-15 Building Materials Investment Corp. Fire resistant slipsheet
CN102975445A (en) * 2011-09-05 2013-03-20 施耐德电器工业公司 Plastic part having a flame-retardant coating and production method thereof
CN104031455A (en) * 2014-06-25 2014-09-10 滁州斯迈特复合材料有限公司 Flame retardant for car paint
CN104031454A (en) * 2014-06-24 2014-09-10 滁州斯迈特复合材料有限公司 Flame retardant for household wall paint
KR101518699B1 (en) * 2013-11-11 2015-05-08 주식회사 레드불스 A coated leather goods of flame retarding polish
WO2016117699A1 (en) * 2015-01-22 2016-07-28 積水化学工業株式会社 Fire-resistant resin composition
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8178449B2 (en) * 2009-07-17 2012-05-15 Building Materials Investment Corp. Fire resistant slipsheet
WO2012023695A2 (en) * 2010-08-19 2012-02-23 Park No Ohk Composition for forming nonflammable film, and nonflammable film obtained therefrom
WO2012023695A3 (en) * 2010-08-19 2012-04-12 Park No Ohk Composition for forming nonflammable film, and nonflammable film obtained therefrom
KR100996720B1 (en) 2010-08-19 2010-11-25 박노옥 Composition for forming non-flammable coating and non-flammable coating obtained therefrom
US8921481B2 (en) 2010-08-19 2014-12-30 James Nohak PAK Composition for forming non-flammable coating, and non-flammable coating obtained therefrom
CN102975445A (en) * 2011-09-05 2013-03-20 施耐德电器工业公司 Plastic part having a flame-retardant coating and production method thereof
CN102975445B (en) * 2011-09-05 2016-12-07 施耐德电器工业公司 Plastic components and production method thereof including fire resistant coating
KR101518699B1 (en) * 2013-11-11 2015-05-08 주식회사 레드불스 A coated leather goods of flame retarding polish
CN104031454A (en) * 2014-06-24 2014-09-10 滁州斯迈特复合材料有限公司 Flame retardant for household wall paint
CN104031455A (en) * 2014-06-25 2014-09-10 滁州斯迈特复合材料有限公司 Flame retardant for car paint
WO2016117699A1 (en) * 2015-01-22 2016-07-28 積水化学工業株式会社 Fire-resistant resin composition
JPWO2016117699A1 (en) * 2015-01-22 2017-11-02 積水化学工業株式会社 Fireproof resin composition
JP7127960B2 (en) 2015-01-22 2022-08-30 積水化学工業株式会社 Fire resistant resin composition
CN115335474A (en) * 2020-03-27 2022-11-11 优泊公司 Aqueous flame-retardant coating composition and flame-retardant thermoplastic resin film
CN115335474B (en) * 2020-03-27 2024-03-12 优泊公司 Aqueous flame retardant coating composition and flame retardant thermoplastic resin film

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