JP2004250508A - Reinforcing material-containing polyurethane foam - Google Patents

Reinforcing material-containing polyurethane foam Download PDF

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Publication number
JP2004250508A
JP2004250508A JP2003040488A JP2003040488A JP2004250508A JP 2004250508 A JP2004250508 A JP 2004250508A JP 2003040488 A JP2003040488 A JP 2003040488A JP 2003040488 A JP2003040488 A JP 2003040488A JP 2004250508 A JP2004250508 A JP 2004250508A
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Prior art keywords
reinforcing material
polyurethane foam
urethane resin
cast
fatty acid
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JP2003040488A
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Japanese (ja)
Inventor
Minoru Hishinuma
稔 菱沼
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Individual
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Individual
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a polyurethane foam which contains a reinforcing material of unutilized resource in a high addition rate, can be cast-molded, and has a uniform foam structure, and to provide a cast-molded article comprising the polyurethane foam containing the inexpensive reinforcing material. <P>SOLUTION: The urethane resin composition capable of effectively utilizing unutilized resources, having a low viscosity and capable of being processed by a cast-foaming method. This polyurethane foam is characterized by comprising a reinforcing material, a urethane resin and a surfactant. Thus, the viscosity of the urethane resin composition is lowered to give a cast-molded article having a fine structure. The unutilized resource can effectively be utilized to provide the polyurethane foam containing the inexpensive reinforcing material. It can be expected that the utilization of the polyurethane foam is widely utilized as a packaging or packing material for household electric appliances or the like, as a building material, or as a heat-insulating material for electric appliances. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明が属する技術分野】
本発明は、補強材、ウレタン樹脂および界面活性剤を含む、生産性、製造コストに優れ、かつ未利用資源を有効に活用ができる補強材含有ポリウレタフォーム成形物を提供するものである。
【0002】
【従来の技術】
従来のポリウレタンフォームは、主原料としてのポリオール成分、原材料であるイソシアネート成分、そして水などの発泡剤、触媒、整泡剤等から成る組成物を混合・攪拌し、型等に注入しポリウレタンフォーム成形物を製造する方法があった。
【0003】
充填材あるいは補強材をウレタン樹脂組成物に添加する方法が提案されているが、充填材あるいは補強材を添加すると粘度が高くなり、流動性が抑制され注型が難しく微細化工ができなく、また、気泡構造が荒くなり、重質なポリウレタンフォームとなる問題がある。ポリウレタンフォームは、建材、家具、自動車部品等に広く使用されて来ているが、近年、地球環境全般への関心が高まる共に未利用資源の利用が期待されてきている。
【0004】
【特許文献1】
特開平6―248042号公報
【特許文献2】
特開平7―224180号公報
【特許文献3】
特開平9―125078号公報
【特許文献4】
特開2000―319350号公報
【特許文献5】
特開2001―354739号公報
【0005】
【発明が解決しようとする課題】
本発明は、未利用資源である補強材を有効利用すると共に、このウレタン樹脂組成物を型に注入する時の粘度を低くし、安価に製造することのできる補強材含有ポリウレタンフォームを提供することをその課題とする。
【0006】
【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、補強材、ウレタン樹脂および界面活性剤を含むことで、上記の課題を解消した補強材含有ポリウレタンフォームを提供できることを見出し本発明の完成に至った。すなわち、ウレタン樹脂は、主原料としてのポリオール成分、原材料であるイソシアネート成分、そして水などの発泡剤、触媒、整泡剤等から成る組成物である。補強材とウレタン樹脂成分との分散性・流動性及び相溶性等を付与する界面活性剤を配合することで低粘度のウレタン樹脂組成物が得られる。
【0007】
食パンの耳、オカラ、木粉、コーヒー抽出残渣、セルロース等の補強材には、ポリオール成分と同様な高級多価アルコール類(OH基)が含有し、イソシアナート成分と架橋反応しウレタン構造体を形成されるので、単なる増量材でなくウレタン樹脂のポリオール成分として利用され、未利用資源で一部代替することが可能である。
【0008】
請求項1では、補強材、ウレタン樹脂および界面活性剤を含むことを特徴とする補強材含有ポリウレタンフォームを要旨とした。請求項2では、補強材が、大豆加工品粉砕物、パン粉砕物、木粉および/またはこれらの混物からなる群から選択されることを特徴とする請求項1記載の補強材含有ポリウレタンフォームを要旨とした。
【0009】
請求項3では、界面活性剤が、脂肪酸エステル、脂肪酸グリセリド、ショ糖脂肪酸エステル、ナフタレンスルフォン酸ホルマリン縮合物および/またはこれらの混物からなる群から選択されることを特徴とする請求項1記載の補強材含有ポリウレタンフォームを要旨とした。請求項4では、請求項1〜3のいずれか1項に記載の補強材含有ポリウレタンフォームからなる注型成形物を要旨とした。
【0010】
【発明の実施の形態】
本発明の実施の形態を以下に説明する。補強材としては、豆腐製造時発生する大豆加工品の乾燥粉砕物(オカラ)、パン製造で発生する食パンの耳、規格外品、サンドイッチ製造工程で発生するパンの耳等の乾燥したパン粉砕、製材過程で発生す木粉や繊維の粉末等を挙げることができ、用途に応じて、単独及び/または併用して用いることが出来る。
【0011】
補強材中の水分含有率は、15%以下が好ましく、15%以上であるとイソシアネート成分との反応性が悪くなりポリウレタンフォームの気泡構造が粗くなり充分な強度が得られない。補強材の粒度は、80メッシュパスが好ましく、80メッシュ以下の粗い補強材は、ウレタン樹脂との混合が不均一になり分散性・流動性が悪くなる。
【0012】
補強材の添加量は、ポリウレタンフォーム組成物中好ましくは5〜40%で、5%以下であると製造コストメリットが少なく好ましくない。40%以上配合すると、ウレタン樹脂組成物の粘度が高くなり、型に注入が困難になり良品の成形物が得られない。補強材の添加方法は、ポリオール成分あるいはイソシアネート成分のいずれかに添加することができるが、好ましくは、粘度等を考慮するとポリオール成分に配合することが好ましい。
【0013】
界面活性剤は、ウレタン成分と補強材の分散性、流動性向上、可塑化、相溶性等を付与するために配合される。界面活性剤としては、脂肪酸エステル(ソルビタン脂肪酸エステル、プロピレングリコール脂肪酸エステル、ポリオキシエチレンソルビタン脂肪酸エステル等)、脂肪酸グリセライド(グリセリンモノ脂肪酸エステル、グリセリンジアセテートモノラウレート、ジグリセリンステアレート等)、高級アルコール脂肪酸エステル(ステアリルステアレート等)、ショ糖脂肪酸エステル(ショ糖ステアリン酸エステル、ショ糖パルミチン酸エステル、ショ糖ラウリン酸エステル、ショ糖混合脂肪酸エステル等)、ナフタレンスルフォン酸ホルマリン縮合物等および/またはこれらの混合物からなる群から選択され用いることができる。
【0014】
その添加率は、0.1〜10重量部、好ましくは0.5〜5重量部である。0.1重量部以下では,組成物の流動性,分散性、潤滑性等が充分でなく、10重量部以上では、機械的強度が十分に得られなく好ましくない。
【0015】
ウレタン樹脂は、主原料としてのポリオール成分、イソシアネート成分、そして水などの発泡剤、重合触媒、整泡剤等から成る組成物である。ポリオール成分は、たとえばポリエチレングリコール、ジエチレングリコール、ポリプロピレングリコール、1,4−ブタンジオール、グリセリン等および/またはこれらの混合物からなる群から選択され用いることができる。イソシアネート成分は、ポリウレタンフォームに用いられる芳香族系、脂肪族系および複素環系のイソシアネートを用いることができる。
【0016】
その具体例として4,4−ジフェニールメタンジイソシアネート(MDI),トリレンジイソシアネート(TDI),1,6−ヘキサメチレンジイソシアネート(HDI)等および/またはこれらの混合物からなる群から選択され用いることができる。通常ウレタン樹脂に用いられるものでよく、ポリウレタンフォームの物性、用途に応じて適宜選択でき、特に限定されないが、イソシアネートと水酸基との当量比(NCO:OH)が100:90〜130(比率)となるように混合することが好ましい。
【0017】
ポリオール成分とイソシアネート成分の重合反応触媒としては、N,N−ジメチルシクロヘキシルアミン、エチレンジアミン等のアミン類とジ−n−ブチルスズジラウリン酸、オクチル酸スズ等の有機金属化合物が用いられる。さらに、ポリウレタンフォームの性能をより改善するための気泡調整剤・安定化剤シリコン系の界面活性剤等を用いることができる。重合方法は、プレポリマー法あるいはワンショット法のいずれの方法でもよい。
【0018】
補強材含有ポリウレタンフォームは、高含有率の補強材を配合したにかかわらずウレタン樹脂組成物の粘度が低いため、細かな構造のもの、大型の形状のものまで、特殊な装置を用いることなく容易にウレタン樹脂組成物を注入することで任意の形状品を注入成形加工することができる。
【0019】
本発明の補強材含有ポリウレタンフォームには、所望の特性並びに用途等に応じて、該樹脂組成物の特性を阻害しない範囲で公知のウレタン樹脂用添加剤を任意に配合することができる。例えば充填材としてタルク、炭酸カルシウム等を添加することができる。また、香料,着色料,酸化防止剤、難燃剤、抗菌剤等の有用な添加剤を配合することができる。また、通常のポリウレタンフォームを製造するときには、一般的な液体を混合に用いられている公知の装置によって行なえばよい。
【0020】
【実施例】
以下に示す原料を用いてポリウレタンフォームを調整した。
パンの耳粉砕物:食パン製造工程からでる食パンの耳を乾燥し含水率3%のものを粉砕し、80メッシュの篩をパスしたもの。大豆加工品粉砕物:豆腐製造過程で発生したオカラを乾燥し含水率4.5%のものを粉砕し、80メッシュの篩をパスしたもの。
【0021】
木粉:杉の製材過程で発生した木粉を乾燥し含水率4%のものを粉砕し、80メッシュの篩をパスしたもの。ポリオール成分:ポリプロピレングリコール(PPG,分子量400,3官能)。液化植物性ポリオール成分:木粉をポリオール成分と酸触媒下で液化したされた植物性ポリオール(バイオオール、フジカーボン社製)。イソシアネート成分:ジフェニルメタンジイソシアネート含有組成物(MDI)。重合反応触媒:オクチル酸スズ。気泡調整剤:シリコン系気泡調整剤。
【0022】
実施例1 このようにして得られたパンの耳粉砕物を表1に示す割合で加え、PPG50gとソルビタンステアレート1gをホモジナイザーを用いて分散・攪拌した物にオクチル酸スズ0.06gとシリコン系気泡調整剤0.02gを添加し、さらにMDI55gを加えホモジナイザーにかけ、反応が始まり発熱してきたところで、15*18*4cmの型に注入し発泡させ、ポリウレタンフォームを調整した。
【0023】
実施例2 上記大豆加工品粉砕物30g、PPG50gとショ糖ステアリン酸エステル1gをホモジナイザーを用いて分散・攪拌した物にオクチル酸スズ0.06gとシリコン系気泡調整剤0.02gを添加し、さらにMDI60gを加えホモジナイザーにかけ、反応が始まり発熱してきたところで、15*18*4cmの型に注入し発泡させ、ポリウレタンフォームを調整した。
【0024】
実施例3 上記木粉30g、PPG50gとグリセリンジアセトモノラウレート1.2gをホモジナイザーを用いて分散・攪拌した物にオクチル酸スズ0.05gとシリコン系気泡調整剤0.03gを添加し、さらにMDI55gを加えホモジナイザーにかけ、反応が始まり発熱してきたところで、15*18*4cmの型に注入し発泡させ、ポリウレタンフォームを調整した。
【0025】
実施例4 上記パンの耳粉砕物35g、液化植物性ポリオール成分50gとグリセリンジアセトモノラウレート1.2gをホモジナイザーを用いて分散・攪拌した物にオクチル酸スズ0.06gとシリコン系気泡調整剤0.03gを添加し、さらにMDI65gを加えホモジナイザーにかけ、反応が始まり発熱してきたところで、15*18*4cmの型に注入し発泡させ、ポリウレタンフォームを調整した。
【0026】
実施例5上記パンの耳粉砕物35g、液化植物性ポリオール成分50gとナフタレンスルホン酸ホルマリン縮合物マクネシウ塩0.6gをホモジナイザーを用いて分散・攪拌した物にオクチル酸スズ0.06gとシリコン系気泡調整剤0.03gを添加し、さらにMDI60gを加えホモジナイザーにかけ、反応が始まり発熱してきたところで、15*18*4cmの型に注入し発泡させ、ポリウレタンフォームを調整した。
【0027】
比較例1 上記パンの耳粉砕物30g、PPG50gをホモジナイザーを用いて分散・攪拌した物にオクチル酸スズ0.06gとシリコン系気泡調整剤0.02gを添加し、さらにMDI60gを加えホモジナイザーにかけ、反応が始まり発熱してきたところで、15*18*4cmの型に注入し発泡させ、ポリウレタンフォームを調整した。
【0028】
比較例2 上記パンの耳粉砕物の篩50〜80メッシュ30gとPPG50gをホモジナイザーを用いて分散・攪拌した物にオクチル酸スズ0.06gとシリコン系気泡調整剤0.02gを添加し、さらにMDI60gを加えホモジナイザーにかけ、反応が始まり発熱してきたところで、15*18*4cmの型に注入し発泡させ、ポリウレタンフォームを調整した。
【0029】
実施例1〜5並びに比較例1,2で得られたポリオール組成物(補強材、界面活性剤、重合触媒、気泡剤)の粘度並びにこのポリオール組成物にMDI含有組成物を加えホモジナイザー30秒かけた直後の粘度をB型回転粘度計で粘度を測定した。得られた補強材含有ポリウレタンフォームの発泡倍率を測定した。測定法は、下記のとおりで、実施例1の結果を表1に、実施例2〜5及び比較例1,2の結果を表2に示した。
1) 粘度測定温度30度
2) ポリウレタンフォームの発泡倍率は、発泡容積/ウレタン樹脂組成物の重量。
【0030】
【表1】

Figure 2004250508
【0031】
【表2】
Figure 2004250508
【0032】
実施例1で得られた結果は、ポリオール成分に対するパンの耳粉砕物比率が高くなるほど粘度が高く、気泡構造く強度も低い。比較例1,2のとおり分散剤を配合しないとウレタン樹脂組成物の粘度が高くなり、注入が困難となり発泡倍率の低い補強材含有ポリウレタンフォームであった。補強材の粒度(50〜80メッシュ)が粗い発泡性が好ましくなかった。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a reinforcing material-containing polyurethane foam molded article containing a reinforcing material, a urethane resin, and a surfactant, which is excellent in productivity and production cost and can effectively utilize unused resources.
[0002]
[Prior art]
Conventional polyurethane foam is prepared by mixing and stirring a composition consisting of a polyol component as a main raw material, a isocyanate component as a raw material, a foaming agent such as water, a catalyst, a foam stabilizer, and the like, and injecting into a mold to form a polyurethane foam. There was a way to make things.
[0003]
A method of adding a filler or a reinforcing material to the urethane resin composition has been proposed.However, when the filler or the reinforcing material is added, the viscosity increases, the flowability is suppressed, casting is difficult, and fine refining cannot be performed, and However, there is a problem that the cell structure becomes coarse and a heavy polyurethane foam is formed. Polyurethane foams have been widely used for building materials, furniture, automobile parts, and the like, but in recent years, interest in global environment has been increasing and utilization of unused resources has been expected.
[0004]
[Patent Document 1]
JP-A-6-248042 [Patent Document 2]
JP-A-7-224180 [Patent Document 3]
Japanese Patent Application Laid-Open No. 9-125078 [Patent Document 4]
JP 2000-319350 A [Patent Document 5]
Japanese Patent Application Laid-Open No. 2001-354739
[Problems to be solved by the invention]
An object of the present invention is to provide a polyurethane foam containing a reinforcing material, which makes effective use of a reinforcing material, which is an unused resource, reduces the viscosity when the urethane resin composition is poured into a mold, and can be manufactured at low cost. Is the subject.
[0006]
[Means for Solving the Problems]
As a result of intensive studies, the present inventors have found that by including a reinforcing material, a urethane resin and a surfactant, it is possible to provide a reinforcing material-containing polyurethane foam that has solved the above-mentioned problems, and has completed the present invention. That is, the urethane resin is a composition comprising a polyol component as a main raw material, an isocyanate component as a raw material, a blowing agent such as water, a catalyst, a foam stabilizer, and the like. A low-viscosity urethane resin composition can be obtained by blending a surfactant that imparts the dispersibility / fluidity and compatibility between the reinforcing material and the urethane resin component.
[0007]
Reinforcing materials such as bread ears, okara, wood flour, coffee extraction residue, and cellulose contain higher polyhydric alcohols (OH groups) similar to the polyol component, and undergo a crosslinking reaction with the isocyanate component to form a urethane structure. Since it is formed, it is used as a polyol component of the urethane resin, not as a simple filler, and can be partially replaced with unused resources.
[0008]
The gist of the present invention is that a reinforcing material-containing polyurethane foam is characterized by containing a reinforcing material, a urethane resin and a surfactant. In claim 2, the reinforcing material is selected from the group consisting of ground soy products, ground bread, wood flour and / or mixtures thereof. Was the gist.
[0009]
In claim 3, the surfactant is selected from the group consisting of fatty acid esters, fatty acid glycerides, sucrose fatty acid esters, naphthalene sulfonic acid formalin condensates and / or mixtures thereof. The gist is a polyurethane foam containing a reinforcing material. According to a fourth aspect of the invention, there is provided a cast molded article comprising the reinforcing material-containing polyurethane foam according to any one of the first to third aspects.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below. As a reinforcing material, dried and crushed soybean products (okara) generated during tofu manufacturing, bread ears generated during bread manufacturing, non-standardized products, dry bread crushed such as bread ears generated during a sandwich manufacturing process, Examples thereof include wood powder and fiber powder generated in the lumbering process, and can be used alone and / or in combination depending on the application.
[0011]
The water content in the reinforcing material is preferably 15% or less, and if it is 15% or more, the reactivity with the isocyanate component is deteriorated, the cell structure of the polyurethane foam becomes coarse, and sufficient strength cannot be obtained. The particle size of the reinforcing material is preferably 80 mesh pass, and a coarse reinforcing material having a mesh size of 80 mesh or less becomes uneven in mixing with the urethane resin, resulting in poor dispersibility and fluidity.
[0012]
The amount of the reinforcing material to be added is preferably 5 to 40% in the polyurethane foam composition. If the content is more than 40%, the viscosity of the urethane resin composition increases, making it difficult to inject the urethane resin composition into a mold, and a good molded product cannot be obtained. The reinforcing agent can be added to either the polyol component or the isocyanate component, but preferably is added to the polyol component in consideration of viscosity and the like.
[0013]
The surfactant is blended for improving the dispersibility and fluidity of the urethane component and the reinforcing material, plasticizing, compatibility and the like. Examples of the surfactant include fatty acid esters (such as sorbitan fatty acid ester, propylene glycol fatty acid ester, and polyoxyethylene sorbitan fatty acid ester), fatty acid glycerides (glycerin monofatty acid ester, glycerin diacetate monolaurate, diglycerin stearate, and the like), Alcohol fatty acid esters (such as stearyl stearate), sucrose fatty acid esters (such as sucrose stearate, sucrose palmitate, sucrose laurate, and sucrose mixed fatty acid esters), naphthalene sulfonic acid formalin condensates, and / or the like. Alternatively, they can be used by being selected from the group consisting of mixtures thereof.
[0014]
The addition rate is 0.1 to 10 parts by weight, preferably 0.5 to 5 parts by weight. If the amount is less than 0.1 part by weight, the fluidity, dispersibility, lubricity and the like of the composition are not sufficient, and if it is more than 10 parts by weight, sufficient mechanical strength cannot be obtained, which is not preferable.
[0015]
The urethane resin is a composition comprising a polyol component as a main raw material, an isocyanate component, a foaming agent such as water, a polymerization catalyst, a foam stabilizer, and the like. The polyol component can be selected and used from the group consisting of, for example, polyethylene glycol, diethylene glycol, polypropylene glycol, 1,4-butanediol, glycerin, and / or a mixture thereof. As the isocyanate component, aromatic, aliphatic and heterocyclic isocyanates used for polyurethane foam can be used.
[0016]
Specific examples thereof include those selected from the group consisting of 4,4-diphenylmethane diisocyanate (MDI), tolylene diisocyanate (TDI), 1,6-hexamethylene diisocyanate (HDI), and / or mixtures thereof. . What is usually used for a urethane resin may be used, and may be appropriately selected depending on the physical properties and application of the polyurethane foam, and is not particularly limited, but an equivalent ratio (NCO: OH) of isocyanate to hydroxyl group is 100: 90 to 130 (ratio). It is preferable to mix them.
[0017]
As the polymerization reaction catalyst for the polyol component and the isocyanate component, amines such as N, N-dimethylcyclohexylamine and ethylenediamine and organic metal compounds such as di-n-butyltin dilauric acid and tin octylate are used. In addition, a silicone-based surfactant or the like may be used to further improve the performance of the polyurethane foam. The polymerization method may be either a prepolymer method or a one-shot method.
[0018]
The polyurethane foam containing a reinforcing material has a low viscosity of the urethane resin composition regardless of the content of the reinforcing material with a high content. By injecting the urethane resin composition into the resin, an arbitrary shaped article can be injection molded.
[0019]
Known additives for urethane resins can be arbitrarily added to the reinforcing material-containing polyurethane foam of the present invention in accordance with desired properties and applications, as long as the properties of the resin composition are not impaired. For example, talc, calcium carbonate, or the like can be added as a filler. Further, useful additives such as fragrances, coloring agents, antioxidants, flame retardants, antibacterial agents and the like can be blended. When a usual polyurethane foam is produced, it may be carried out by a known apparatus used for mixing a general liquid.
[0020]
【Example】
A polyurethane foam was prepared using the following raw materials.
Bread ear crushed product: A product obtained by drying the bread ears obtained from the bread manufacturing process, crushing a product having a moisture content of 3%, and passing the product through an 80-mesh sieve. Processed soybean product: A product obtained by drying okara generated in the tofu production process, pulverizing a product having a water content of 4.5%, and passing it through an 80 mesh sieve.
[0021]
Wood flour: Wood flour generated in the process of sawing cedar, dried and pulverized with a moisture content of 4%, and passed through an 80 mesh sieve. Polyol component: polypropylene glycol (PPG, molecular weight 400, trifunctional). Liquefied vegetable polyol component: Vegetable polyol obtained by liquefying wood flour in the presence of a polyol component and an acid catalyst (Biool, manufactured by Fuji Carbon Co., Ltd.). Isocyanate component: diphenylmethane diisocyanate-containing composition (MDI). Polymerization reaction catalyst: tin octylate. Bubble conditioner: Silicon-based bubble conditioner.
[0022]
Example 1 The crushed bread ears obtained in this manner were added at the ratio shown in Table 1, and 50 g of PPG and 1 g of sorbitan stearate were dispersed and stirred using a homogenizer. To the mixture was added 0.02 g of a cell regulator, 55 g of MDI, and the mixture was homogenized. When the reaction started and heat was generated, the mixture was poured into a mold of 15 * 18 * 4 cm and foamed to prepare a polyurethane foam.
[0023]
Example 2 0.06 g of tin octylate and 0.02 g of a silicon-based foam adjuster were added to a product obtained by dispersing and stirring 30 g of the ground soybean processed product, 50 g of PPG and 1 g of sucrose stearate using a homogenizer, and further, 60 g of MDI was added and the mixture was applied to a homogenizer. When the reaction started and heat was generated, the mixture was poured into a mold of 15 * 18 * 4 cm and foamed to prepare a polyurethane foam.
[0024]
Example 3 0.05 g of tin octylate and 0.03 g of a silicon-based foam modifier were added to a dispersion obtained by dispersing and stirring 30 g of the wood flour, 50 g of PPG, and 1.2 g of glycerin diacetmonolaurate using a homogenizer, and further added 55 g of MDI. Was added and the mixture was subjected to a homogenizer. When the reaction started and heat was generated, the mixture was poured into a mold of 15 * 18 * 4 cm and foamed to prepare a polyurethane foam.
[0025]
Example 4 35 g of the above-obtained bread ears, 50 g of a liquefied vegetable polyol component and 1.2 g of glycerin diacetmonolaurate were dispersed and stirred using a homogenizer, and then 0.06 g of tin octylate and a silicone-based foam modifier 0 were prepared. After adding 0.03 g of MDI and further adding 65 g of MDI to a homogenizer and starting the reaction and generating heat, the mixture was poured into a mold of 15 * 18 * 4 cm and foamed to prepare a polyurethane foam.
[0026]
Example 5 0.06 g of tin octylate and silicon-based air bubbles were dispersed in 35 g of the crushed bread ears, 50 g of liquefied vegetable polyol component and 0.6 g of naphthalene sulfonic acid formalin condensate Macnesium salt using a homogenizer. 0.03 g of a regulator was added, and 60 g of MDI was further added. The mixture was homogenized. When the reaction started and heat was generated, the mixture was poured into a mold of 15 * 18 * 4 cm and foamed to prepare a polyurethane foam.
[0027]
Comparative Example 1 To a product obtained by dispersing and stirring 30 g of the above-obtained bread ears and 50 g of PPG using a homogenizer, 0.06 g of tin octylate and 0.02 g of a silicon-based foam regulator were added, and 60 g of MDI was further added and the mixture was subjected to a homogenizer. Was started and heat was generated, the mixture was poured into a mold of 15 * 18 * 4 cm and foamed to prepare a polyurethane foam.
[0028]
Comparative Example 2 To a product obtained by dispersing and stirring 30 g of a 50-80 mesh sieve and 50 g of PPG and 50 g of PPG using a homogenizer, 0.06 g of tin octylate and 0.02 g of a silicon-based foam regulator were added, and further 60 g of MDI. Was added and the mixture was subjected to a homogenizer. When the reaction started and heat was generated, the mixture was poured into a mold of 15 * 18 * 4 cm and foamed to prepare a polyurethane foam.
[0029]
The viscosities of the polyol compositions (reinforcing agent, surfactant, polymerization catalyst, foaming agent) obtained in Examples 1 to 5 and Comparative Examples 1 and 2, and an MDI-containing composition were added to the polyol composition and a homogenizer was applied for 30 seconds. Immediately after the measurement, the viscosity was measured with a B-type rotational viscometer. The expansion ratio of the obtained polyurethane foam containing a reinforcing material was measured. The measurement method is as follows. Table 1 shows the results of Example 1 and Table 2 shows the results of Examples 2 to 5 and Comparative Examples 1 and 2.
1) Viscosity measurement temperature 30 degrees 2) Foaming ratio of polyurethane foam is foaming volume / weight of urethane resin composition.
[0030]
[Table 1]
Figure 2004250508
[0031]
[Table 2]
Figure 2004250508
[0032]
The results obtained in Example 1 show that the higher the ratio of the crushed bread to the polyol component, the higher the viscosity, the higher the cell structure, and the lower the strength. When no dispersant was added as in Comparative Examples 1 and 2, the viscosity of the urethane resin composition was increased, and injection was difficult, resulting in a polyurethane foam containing a reinforcing material having a low expansion ratio. The foaming property of the reinforcing material having a coarse particle size (50 to 80 mesh) was not preferable.

Claims (4)

補強材、ウレタン樹脂および界面活性剤を含むことを特徴とする補強材含有ポリウレタンフォーム。A polyurethane foam containing a reinforcing material, comprising a reinforcing material, a urethane resin and a surfactant. 補強材が、大豆加工品粉砕物、パン粉砕物、木粉および/またはこれらの混物からなる群から選択されることを特徴とする請求項1記載の補強材含有ポリウレタンフォーム。The reinforcing material-containing polyurethane foam according to claim 1, wherein the reinforcing material is selected from the group consisting of ground soy products, ground bread, wood flour, and / or mixtures thereof. 界面活性剤が、脂肪酸エステル、脂肪酸グリセリド、ショ糖脂肪酸エステル、ナフタレンスルホン酸ホルマリン縮合物および/またはこれらの混物からなる群から選択されることを特徴とする請求項1記載の補強材含有ポリウレタンフォーム。The reinforcing material-containing polyurethane according to claim 1, wherein the surfactant is selected from the group consisting of a fatty acid ester, a fatty acid glyceride, a sucrose fatty acid ester, a naphthalenesulfonic acid formalin condensate, and / or a mixture thereof. Form. 請求項1〜3のいずれか1項に記載の補強材含有ポリウレタンフォームからなる注型成形物。A cast molded article comprising the reinforcing material-containing polyurethane foam according to claim 1.
JP2003040488A 2003-02-19 2003-02-19 Reinforcing material-containing polyurethane foam Pending JP2004250508A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012172981A1 (en) * 2011-06-16 2012-12-20 株式会社ブリヂストン Urethane resin composition and a conductive roller using same
JP2019119825A (en) * 2018-01-10 2019-07-22 株式会社イノアック技術研究所 Hard urethane resin composition
US11008439B2 (en) 2015-10-02 2021-05-18 The Chemours Company Fc, Llc Solid polymeric articles having hydrophobic compounds intermixed therein

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012172981A1 (en) * 2011-06-16 2012-12-20 株式会社ブリヂストン Urethane resin composition and a conductive roller using same
JP2013001788A (en) * 2011-06-16 2013-01-07 Bridgestone Corp Urethane resin composition and electroconductive roller using the same
US9376539B2 (en) 2011-06-16 2016-06-28 Bridgestone Corporation Urethane resin composition and a conductive roller using same
US11008439B2 (en) 2015-10-02 2021-05-18 The Chemours Company Fc, Llc Solid polymeric articles having hydrophobic compounds intermixed therein
JP2019119825A (en) * 2018-01-10 2019-07-22 株式会社イノアック技術研究所 Hard urethane resin composition

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