JP2008248083A5 - - Google Patents

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JP2008248083A5
JP2008248083A5 JP2007091156A JP2007091156A JP2008248083A5 JP 2008248083 A5 JP2008248083 A5 JP 2008248083A5 JP 2007091156 A JP2007091156 A JP 2007091156A JP 2007091156 A JP2007091156 A JP 2007091156A JP 2008248083 A5 JP2008248083 A5 JP 2008248083A5
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fibers
kaolin clay
smc
bulk density
densely packed
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JP2007091156A
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JP2008248083A (en
JP5334375B2 (en
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Description

従来より、FRPと称される繊維強化成形材料からなる成形体は、よく知られているように、優れた機械的強度及び耐久性を有することから、例えば浴槽、貯水槽、浄化槽、外装・内装用パネルの住宅関連部品の他、車両関連部品、広告用ボード、レジャーボート、ボビン等として、実用されている
Conventionally, a molded body made of a fiber reinforced molding material called FRP has excellent mechanical strength and durability, as is well known. For example, a bathtub, a water tank, a septic tank, an exterior / interior In addition to housing-related parts for automobile panels, they are used as vehicle-related parts, advertising boards, leisure boats, bobbins and the like .

一方、本発明に従う熱硬化性樹脂組成物に含有されるカオリンクレーは、ケイ酸アルミニウムを主成分とする天然に産出する粘土(カオリナイト、ハロイサイト)及びろう石(パイロフィライト)を原料として製造されるカオリンクレー及びろう石クレーであって、密充填かさ密度が、特に、0.60〜1.15g/cm3 の範囲内にあるもの、好ましくは0.65〜1.10g/cm3 、更に好ましくは0.70〜1.00g/cm 3 の範囲内にあるものが用いられるのである。なぜなら、密充填かさ密度が0.60g/cm3 未満では、成形体の難燃性の低下を伴うおそれがあるからであり、逆に、密充填かさ密度が1.15g/cm3 を超えると、該組成物に対するチキソトロピー性の付与効果が十分ではなく、繊維質基材の結合剤として用いたとしても、繊維強化成形材料に低圧成形性を付与できず、また、かかる繊維強化成形材料を成形硬化させてなる成形体の表面平滑性や耐そり性を向上せしめ得なくなるからである。なお、上記密充填かさ密度とは、文字通り、密充填した場合におけるかさ密度であって、本発明では、タッピング速度:1回/秒、タッピング時間:10分間、タッピングの合計回数:600回の条件で密充填を行って、単位面積あたりのカオリンクレーの質量(かさ密度)を求めるものとする。
On the other hand, kaolin clay contained in the thermosetting resin composition according to the present invention is produced from raw materials such as clay (kaolinite, halloysite) and wax stone (pyrophyllite), which are mainly produced from aluminum silicate. a kaolin clay and pyrophyllite clays are, close-packed bulk density, in particular, those in the range of 0.60~1.15g / cm 3, preferably 0.65~1.10g / cm 3, More preferably, those in the range of 0.70 to 1.00 g / cm 3 are used. This is because if the densely packed bulk density is less than 0.60 g / cm 3 , the flame retardancy of the molded product may be lowered, and conversely if the densely packed bulk density exceeds 1.15 g / cm 3. The effect of imparting thixotropy to the composition is not sufficient, and even when used as a binder for a fibrous base material, low-pressure formability cannot be imparted to the fiber-reinforced molding material, and such a fiber-reinforced molding material is molded. This is because it is impossible to improve the surface smoothness and warpage resistance of the molded product. The above-mentioned densely packed bulk density is literally a bulk density when densely packed. In the present invention, the condition of tapping speed: 1 time / second, tapping time: 10 minutes, total number of tapping: 600 times The mass (bulk density) of kaolin clay per unit area is obtained by close packing.

一方、繊維質基材としては、繊維質であるものを主体として補強機能を有するものであれば、特に限定されるものではなく、繊維強化成形材料に要求される特性やその適用分野等に応じて、任意の形状と材質のものが適宜に選択されて、用いられることとなる。かかる繊維質基材の形状としては、例えばフィラメント、ロービング、ストランド、チョップドストランド、ペーパー、マット、クロス等の形状を有する各種繊維を挙げることができる。また、繊維質基材の材質としては、例えば、ガラス繊維、炭素繊維、アラミド繊維、フェノール繊維、ポリアミド繊維、ポリエステル繊維、アルミナ繊維、金属繊維の他、ウイスカー、ミルドファイバー、リンターパルプ、麻繊維、木材チップ等を挙げることができる。これらの繊維質基材は単独で用いてもよいし、2種以上を併用してもよい。なお、これらの中でも、SMCにおいては、コストや強度、入手容易性等の観点から、ガラス繊維が最も好適に用いられるのである。
On the other hand, the fibrous base material is not particularly limited as long as it has a reinforcing function mainly composed of fibrous materials, depending on the characteristics required for the fiber reinforced molding material and the application field thereof. Thus, an arbitrary shape and material are appropriately selected and used. Examples of the shape of the fibrous base material include various fibers having shapes such as filament, roving, strand, chopped strand, paper, mat, and cloth. The material for the fibrous base material, e.g., glass fibers, carbon textiles, A aramid fibers, phenol fibers, polyamide fibers, polyester fibers, alumina fibers, other metal fibers, whiskers, milled fibers, linter, hemp Examples thereof include fibers and wood chips. These fibrous base materials may be used alone or in combination of two or more. Of these, glass fibers are most preferably used in SMC from the viewpoints of cost, strength, availability, and the like.

以上、本発明の具体的な構成について、シート状の形態を有するSMCを例に挙げて詳述してきたが、これはあくまでも例示に過ぎないのであって、本発明は、上記の記載によって、何等の制約を受けるものではなく、上記SMCの他にも、バルクモールディングコンパウンド(BMC)、プリプレグ、プレミックス等の各種の形態のものが、本発明の対象とな得るのである。
The specific configuration of the present invention has been described in detail by taking the SMC having a sheet form as an example. However, this is merely an example, and the present invention is not limited to the above description. not to undergo limitations, in addition to the above SMC, bulk molding compound (BMC), a prepreg, those various forms of the premix or the like, and to obtain Ri target Do of the present invention.

(実施例4)
実施例1のカオリンクレーに代えて、密充填かさ密度の異なるカオリンクレーを用い、且つフェノール樹脂とカオリンクレーの配合比を変更した以外は、実施例1と同様にして、熱硬化性樹脂組成物たるSMC用ペーストを調製し、このペーストの粘度及びチキソトロピック指数を測定して、得られた結果を下記表1に示した。また、上記実施例1と同様にして、得られたペーストを用いて、SMCを作製し、引き続き、このSMCを用いて、成形体を作製した。そして、得られた成形体について、上述の如き難燃性の評価、表面平滑性の評価及びそり量の測定を行い、得られた結果を下記表1に併せ示した。また、実施例4で使用したカオリンクレーについて、異なる倍率のSEM写真を撮像し、図1(5000倍)及び図2(10000倍)に示した。
Example 4
A thermosetting resin composition was used in the same manner as in Example 1 except that kaolin clay having a different densely packed bulk density was used instead of kaolin clay in Example 1 and the blending ratio of phenol resin and kaolin clay was changed. A paste for SMC was prepared, and the viscosity and thixotropic index of this paste were measured. The results obtained are shown in Table 1 below. Moreover, SMC was produced using the obtained paste similarly to the said Example 1, and the molded object was produced using this SMC continuously. And about the obtained molded object, the above flame retardant evaluation, surface smoothness evaluation, and the amount of curvature were measured, and the obtained result was combined with following Table 1, and was shown. Moreover, about the kaolin clay used in Example 4, the SEM photograph of a different magnification was imaged and it showed in FIG. 1 (5000 times) and FIG. 2 (10000 times).

(実施例5,6及び比較例3,4)
実施例1のカオリンクレーに代えて、密充填かさ密度の異なるカオリンクレーを用い、且つフェノール樹脂とカオリンクレーの配合比を変更した以外は、実施例1と同様にして、SMCを作製した。そして、得られたSMCを用いて、上述の如き低圧成形性の評価を行い、得られた結果を下記表2に示した。
(Examples 5 and 6 and Comparative Examples 3 and 4)
An SMC was produced in the same manner as in Example 1 except that kaolin clay having a different densely packed bulk density was used instead of kaolin clay in Example 1 and the blending ratio of phenol resin and kaolin clay was changed. The obtained SMC was used to evaluate the low-pressure formability as described above, and the results obtained are shown in Table 2 below.

JP2007091156A 2007-03-30 2007-03-30 Thermosetting resin composition, fiber reinforced molding material and molded body Expired - Fee Related JP5334375B2 (en)

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JP2008248083A5 true JP2008248083A5 (en) 2010-03-04
JP5334375B2 JP5334375B2 (en) 2013-11-06

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EP2267081B1 (en) * 2008-03-07 2014-01-22 Asahi Organic Chemicals Industry Co., Ltd. Heat-curable resin composition, fiber-reinforced molding material and molded article
JP5662662B2 (en) * 2009-09-10 2015-02-04 旭有機材工業株式会社 Method for producing sheet molding compound and thermosetting resin composition therefor

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JP3166324B2 (en) * 1992-06-17 2001-05-14 信越化学工業株式会社 Silica fine powder, method for producing the same, and resin composition containing the silica fine powder
JPH0711103A (en) * 1993-06-21 1995-01-13 Kanebo Ltd Phenol resin molding material
JP4833398B2 (en) * 2000-09-18 2011-12-07 ポリマテック株式会社 Method for producing thermally conductive molded body
JP4252278B2 (en) * 2002-10-17 2009-04-08 旭有機材工業株式会社 Method for producing heat-treated sheet molding material
AU2005265298A1 (en) * 2004-07-09 2006-01-26 Carbo Ceramics, Inc. Method for producing solid ceramic particles
JP2006131732A (en) * 2004-11-05 2006-05-25 Asahi Organic Chem Ind Co Ltd Phenol resin molded product, material for molding and method for producing the same

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