JP5147182B2 - Molded product of styrenic thermoplastic resin composition containing fine glass - Google Patents

Molded product of styrenic thermoplastic resin composition containing fine glass Download PDF

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JP5147182B2
JP5147182B2 JP2006012269A JP2006012269A JP5147182B2 JP 5147182 B2 JP5147182 B2 JP 5147182B2 JP 2006012269 A JP2006012269 A JP 2006012269A JP 2006012269 A JP2006012269 A JP 2006012269A JP 5147182 B2 JP5147182 B2 JP 5147182B2
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glass
thermoplastic resin
fine glass
resin composition
styrene
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JP2007191616A (en
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博治 板谷
信雄 山内
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Asahi Kasei Chemicals Corp
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Description

本発明は、微細ガラスを含有したスチレン系熱可塑性樹脂組成物からなるすりガラス調の成形品に関するものである。   The present invention relates to a ground glass-like molded article comprising a styrenic thermoplastic resin composition containing fine glass.

ガラス繊維強化スチレン系熱可塑性樹脂を用いて高外観の物を得る方法として、アクリル樹脂とAS樹脂を混合した樹脂組成物とガラス繊維の屈折率と一致させる事によって透明性を有する組成物を得る方法が報告されている(例えば、特許文献1および2参照)。また、スチレン−無水マレイン酸共重合体にガラス繊維を添加する方法も報告されている(例えば、特許文献3参照。)。しかし、これらはいずれも透明なガラス繊維強化熱可塑性樹脂組成物を得る事を目的にしたもので、均質な透過性を持った半透明なすりガラス調の成形品を得る事は、表面の荒れや繊維の方向性の為難しかった。   As a method of obtaining a high appearance product using a glass fiber reinforced styrene-based thermoplastic resin, a resin composition in which an acrylic resin and an AS resin are mixed and a composition having transparency are obtained by matching the refractive index of the glass fiber. A method has been reported (see, for example, Patent Documents 1 and 2). A method of adding glass fibers to a styrene-maleic anhydride copolymer has also been reported (for example, see Patent Document 3). However, these are all for the purpose of obtaining a transparent glass fiber reinforced thermoplastic resin composition, and obtaining a translucent ground glass-like molded product having a uniform permeability can cause surface roughness and It was difficult because of the direction of the fiber.

特開昭60−99151号公報JP-A-60-99151 特開昭54−24993号公報JP 54-24993 A 特開平5−331335号公報JP-A-5-331335

従来は、ガラス繊維強化スチレン系樹脂は、例え金型の温度を高くしても、ガラス繊維が表面を荒らす事や、その方向性が確認できる事等が原因の為、外観部品には用いられていなかった。本発明は、微細ガラスを用いかつ、樹脂との屈折率をあえてずらし微細ガラスが識別可能な微細ガラス含有スチレン系熱可塑性樹脂組成物を、金型温度を70℃以上にする事によって、均質な透過性を持ったすりガラス調の成形品を提供する事を目的とする。   Conventionally, glass fiber reinforced styrenic resin is used for external parts because glass fiber roughens the surface and the directionality of the glass fiber can be confirmed even if the mold temperature is increased. It wasn't. In the present invention, a fine glass-containing styrenic thermoplastic resin composition that uses fine glass and is capable of discriminating the fine glass by deviating the refractive index from the resin is made homogeneous by setting the mold temperature to 70 ° C. or higher. The object is to provide a frosted glass-like molded article having transparency.

本発明者らは上記課題を解決するため検討を重ね本発明に到った。
即ち、本発明は、
1.不飽和ニトリル単量体とスチレン単量体の共重合体であるスチレン系熱可塑性樹脂(A)40〜70重量%と微細ガラス(B)30〜60重量%とを混合してなり、且つスチレン系熱可塑性樹脂(A)と微細ガラス(B)との屈折率差が0.02〜0.04である微細ガラス含有スチレン系熱可塑性樹脂組成物を、金型の表面温度が90℃〜150℃で成形して得た、すりガラス調の窓または扉またはカバーに用いる成形品。
The inventors of the present invention have repeatedly studied to solve the above problems and have arrived at the present invention.
That is, the present invention
1. Styrene thermoplastic resin (A) 40 to 70 % by weight, which is a copolymer of unsaturated nitrile monomer and styrene monomer, and fine glass (B) 30 to 60% by weight, and styrene A fine glass-containing styrene-based thermoplastic resin composition having a refractive index difference of 0.02 to 0.04 between the thermoplastic thermoplastic resin (A) and the fine glass (B), and a mold surface temperature of 90 ° C. to 150 ° C. Molded product used for ground glass-like windows or doors or covers obtained by molding at .

吸水性が原因で反りが発生するアクリル樹脂製のすりガラス用シート、あるいは傷付きに問題があるポリスチレン製のすりガラスシートに代わり、吸水性、耐傷性に優れたすりガラス調の成形品を得る事が可能になった。   It is possible to obtain ground glass-like molded products with excellent water absorption and scratch resistance, in place of acrylic resin ground glass sheets that warp due to water absorption or polystyrene ground glass sheets that have problems with scratches. Became.

本発明のスチレン系樹脂(A)は、微細ガラス(B)との屈折率差が0.02〜0.0
4である事が必須である。
スチレン系熱可塑性樹脂(A)としては、不飽和ニトリル単量体、(メタ)アクリル酸エステル単量体、無水マレイン酸単量体の一種以上のビニル系単量体と芳香族ビニル単量体とを共重合させて得られる重合体が挙げられる。
不飽和ニトリル単量体としては、アクリロニトリル、メタクリロニトリル等が挙げられる。好ましくは、アクリロニトリルである。
The refractive index difference between the styrene resin (A) of the present invention and the fine glass (B) is 0.02 to 0.0.
4 is essential.
Styrenic thermoplastic resins (A) include unsaturated nitrile monomers, (meth) acrylic acid ester monomers, one or more vinyl monomers and aromatic vinyl monomers of maleic anhydride monomers And a polymer obtained by copolymerization of
Examples of the unsaturated nitrile monomer include acrylonitrile and methacrylonitrile. Acrylonitrile is preferred.

(メタ)アクリル酸エステル単量体としては、メチルメタクリレート、メチルアクリレート、ブチルアクリレート、エチルアクリレート等が挙げられる。
スチレン系熱可塑性樹脂(A)としては、アクリロニトリル−スチレン共重合体(AS)、(メタ)アクリル酸メチル−スチレン共重合体(MS)が好ましい。
これらの樹脂のうち、アクリロニトリルを25〜35重量%含有するASがより好ましい。
Examples of the (meth) acrylic acid ester monomer include methyl methacrylate, methyl acrylate, butyl acrylate, and ethyl acrylate.
As the styrene thermoplastic resin (A), acrylonitrile-styrene copolymer (AS) and methyl (meth) acrylate-styrene copolymer (MS) are preferable.
Among these resins, AS containing 25 to 35% by weight of acrylonitrile is more preferable.

スチレン系熱可塑性樹脂(A)の製造方法としては、特に限定はされず、乳化重合、懸濁重合、塊状重合、溶液重合、およびこれらの重合法の組み合わせ等の方法がある。
このスチレン系熱可塑性樹脂(A)の微細ガラス含有スチレン系熱可塑性樹脂組成物に対する含有率は40〜95重量%である。さらに好ましくは、70〜95重量%である。40重量%未満であるとシートが脆く割れ易くなる。また、95重量%を越えるとガラスの識別が困難になる。
The method for producing the styrene-based thermoplastic resin (A) is not particularly limited, and examples thereof include emulsion polymerization, suspension polymerization, bulk polymerization, solution polymerization, and a combination of these polymerization methods.
The content rate of this styrene-type thermoplastic resin (A) with respect to the fine glass containing styrene-type thermoplastic resin composition is 40 to 95 weight%. More preferably, it is 70 to 95% by weight. If it is less than 40% by weight, the sheet becomes brittle and easily cracked. On the other hand, if it exceeds 95% by weight, it becomes difficult to identify the glass.

本発明に用いられる微細ガラス(B)としては、従来公知のものであり、形状は、フレーク、ビーズ、バルーンなどで、球状、フレーク状のものが好ましく、アクセプト比が20を越えるようなガラス短繊維は含まないが、ガラス短繊維を併用しても構わない。ガラス繊維を併用する場合は、20%未満が好ましい。ガラスの種類もC−GF(含アルカリガラス繊維)、アルミナ硼珪酸ガラス(Eガラス)などいずれの種類でも可能である。また、5〜50μmの直径の微細ガラスが使用でき、特に5〜20μmの微細ガラスが好ましい。また、スチレン系熱可塑性樹脂との接着性を向上するため、微細ガラス表面をビニルシラン、アミノシラン、クロム化合物等の一般に使用される表面処理剤で処理する事が好ましい。   The fine glass (B) used in the present invention is a conventionally known one, and the shape is flakes, beads, balloons, etc., preferably spherical or flake-like, and a short glass having an acceptance ratio exceeding 20. Fibers are not included, but short glass fibers may be used in combination. When glass fiber is used in combination, it is preferably less than 20%. Any kind of glass such as C-GF (alkali-containing glass fiber), alumina borosilicate glass (E glass) or the like can be used. Further, a fine glass having a diameter of 5 to 50 μm can be used, and a fine glass of 5 to 20 μm is particularly preferable. Moreover, in order to improve adhesiveness with a styrene-type thermoplastic resin, it is preferable to treat the surface of fine glass with a commonly used surface treatment agent such as vinylsilane, aminosilane, or chromium compound.

スチレン系熱可塑性樹脂(A)と微細ガラス(B)との屈折率差は0.02〜0.04であり、より好ましくは0.02〜0.03である。屈折率差が0.02未満だと微細ガラスの識別が難しくなり、0.04以上だと白く濁り透明度が低下する。屈折率は、それぞれを小数点3桁で四捨五入して屈折率差として計算する。
本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物はシート成形性、シート外観、シート強度等の物性バランスが取れるようにスチレン系熱可塑性樹脂(A)と微細ガラス(B)とを上記所定の範囲で配合して製造される。
The refractive index difference between the styrenic thermoplastic resin (A) and the fine glass (B) is 0.02 to 0.04, more preferably 0.02 to 0.03. If the refractive index difference is less than 0.02, it is difficult to identify the fine glass, and if it is 0.04 or more, it becomes white and turbid and the transparency is lowered. Refractive index is calculated as a difference in refractive index by rounding off each to the nearest 3 digits.
In the fine glass-containing styrene-based thermoplastic resin composition of the present invention, the styrenic thermoplastic resin (A) and the fine glass (B) are mixed with the above-mentioned predetermined so that the physical properties such as sheet formability, sheet appearance, and sheet strength can be balanced. It is manufactured by blending in a range.

また、成形性を付与する為、本発明の効果を損なわない範囲で可塑剤および軟化剤を添加しても良い。種類については硬度を低下させるものであれば特に制限はないが、脂肪酸や脂肪酸金属塩、テルペン系樹脂、石油系樹脂、PEやPPワックス類、パラフィン系オイル、ナフテン系オイルおよびエステル系オイルが推奨される。
本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物の特に好ましい組み合わせの例としては、AS樹脂−微細ガラスからなる組成物があげられる。
本発明のスチレン系熱可塑性樹脂(A)と微細ガラス(B)を溶融混合する方法については特に制限はなく、単軸押出機、ニ軸押出機、バンバリーミキサー、加圧ニーダー、ミキシングロール等通常公知の方法を用いることができる。
Moreover, in order to impart moldability, a plasticizer and a softening agent may be added within a range that does not impair the effects of the present invention. The type is not particularly limited as long as it reduces the hardness, but fatty acids and fatty acid metal salts, terpene resins, petroleum resins, PE and PP waxes, paraffinic oils, naphthenic oils and ester oils are recommended. Is done.
An example of a particularly preferred combination of the fine glass-containing styrenic thermoplastic resin composition of the present invention is an AS resin-fine glass composition.
The method for melt-mixing the styrenic thermoplastic resin (A) and fine glass (B) of the present invention is not particularly limited, and a single screw extruder, a twin screw extruder, a Banbury mixer, a pressure kneader, a mixing roll, etc. A known method can be used.

本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物は、必要に応じて、本発明の効
果を損なわない範囲で酸化防止剤、耐候剤、金属不活性剤、紫外線吸収剤、光安定剤、ブリード・ブルーム剤、シール性改良剤、結晶核剤、難燃化剤、架橋剤、共架橋剤、加硫剤、防菌、防カビ剤、分散剤、軟化剤、可塑剤、粘土調整剤、着色防止剤、発泡剤、発泡助剤、酸化チタン、カーボンブラックなどの着色剤、フェライトなどの金属粉末、ガラス繊維、金属繊維などの無機繊維、炭素繊維、アラミド繊維などの有機繊維、複合繊維、チタン酸カリウムウィスカーなどの無機ウィスカー、アスベスト、マイカ、炭酸カルシウム、タルク、シリカ、ケイ酸カルシウム、ハイドロタルサイト、カオリン、ケイソウ土、グラファイト、軽石、エボ粉、コットンフロック、コルク粉、硫酸バリウム、フッ素樹脂、ポリマービーズなどの充填剤、またはこれらの混合物、あるいは他のゴム質重合体、例えばSBR、NBR、BR、NR、IR、AR,CR、IIR、また、その他必要に応じて上記成分以外の熱可塑性樹脂、例えばポリカーボネート系樹脂、ポリアセタール系樹脂、ポリアミド系樹脂、ポリエステル系樹脂、ポリエーテル系樹脂、ポリスルホン、ポリフェニレンサルファイド、ポリアセタール樹脂など、適宜、配合することができる。
The fine glass-containing styrenic thermoplastic resin composition of the present invention is optionally provided with an antioxidant, a weathering agent, a metal deactivator, an ultraviolet absorber, a light stabilizer, and a bleed as long as the effects of the present invention are not impaired.・ Blooming agent, sealability improver, crystal nucleating agent, flame retardant, crosslinking agent, co-crosslinking agent, vulcanizing agent, antibacterial, antifungal agent, dispersant, softener, plasticizer, clay adjuster, coloring Inhibitors, foaming agents, foaming aids, colorants such as titanium oxide and carbon black, metal powders such as ferrite, inorganic fibers such as glass fibers and metal fibers, organic fibers such as carbon fibers and aramid fibers, composite fibers, titanium Inorganic whiskers such as potassium acid whisker, asbestos, mica, calcium carbonate, talc, silica, calcium silicate, hydrotalcite, kaolin, diatomaceous earth, graphite, pumice, evo dust, coconut Nfrock, cork powder, barium sulfate, fluororesin, fillers such as polymer beads, or mixtures thereof, or other rubbery polymers such as SBR, NBR, BR, NR, IR, AR, CR, IIR, In addition, if necessary, thermoplastic resins other than the above components, for example, polycarbonate resins, polyacetal resins, polyamide resins, polyester resins, polyether resins, polysulfones, polyphenylene sulfide, polyacetal resins, and the like can be appropriately blended. it can.

本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物を用いて、均質な透過性を持ったすりガラス調の成形品を得る為には、金型の表面温度が70℃〜150℃で成形する事が必要である。
より好ましくは85℃〜130℃である。ここでいう金型の表面温度とは、樹脂が金型に接触する直前の温度である。金型の表面温度を挙げる方法はどの様な方法でもかまわないが、例えば温水やスチーム、熱媒を用いた温調機を用いる方法、熱電球、コイル、熱風等を表面に近づけ金型表面を加熱する方法、金型内部にコイル等を埋め込み加熱する方法等をもちいる事ができる。また、金型内に冷却する管を通し樹脂充填後に急冷しても構わない。必要に応じてシボ加工を施す事もできる。シボパターンはサンドブラスト、梨地、皮シボ等いずれのパターンでもかまわないが、シボ深さ平均値(Rz:10点平均荒さ)が5〜60μm、好ましくは20〜50μmの梨地か、サンドブラストが好ましい。
In order to obtain a ground glass-like molded article having uniform permeability using the fine glass-containing styrenic thermoplastic resin composition of the present invention, the mold should be molded at a surface temperature of 70 ° C. to 150 ° C. is necessary.
More preferably, it is 85 to 130 ° C. The surface temperature of a metal mold | die here is temperature just before resin contacts a metal mold | die. Any method can be used to raise the surface temperature of the mold, for example, a method using a temperature controller using hot water, steam, or a heating medium, a hot bulb, coil, hot air, etc. A method of heating, a method of heating by embedding a coil or the like in the mold, etc. can be used. Further, it may be cooled rapidly after filling the resin through a pipe for cooling. If necessary, it can be textured. The wrinkle pattern may be any pattern such as sand blast, pear texture, or leather wrinkle, but a wrinkle depth average value (Rz: 10-point average roughness) of 5 to 60 μm, preferably 20 to 50 μm, is preferable.

本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物には表面に印刷や塗装を施すこと、接着剤を用いて他の素材と接着することが可能である。シートに対して、表面を塗装したり、グラビア印刷等で表面に種々の意匠、図柄を印刷して外観を見栄えの良いものにすることができる。また、他の素材と接着剤を用いて接着することにより製品の一部に本発明の成形品を組み合わせて用いることができる。
本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物のシボ加工シートは、溶剤に対して適度の膨潤性を示すため、塗料、印刷用インク、接着剤に含まれる溶剤により膨潤することで塗料、インク、樹脂素材と密着することが可能となる。
The fine glass-containing styrenic thermoplastic resin composition of the present invention can be printed or painted on the surface, and can be bonded to other materials using an adhesive. The surface of the sheet can be painted, or various designs and designs can be printed on the surface by gravure printing or the like to improve the appearance. Further, the molded product of the present invention can be used in combination with a part of the product by bonding with another material and an adhesive.
The embossed sheet of the fine glass-containing styrene-based thermoplastic resin composition of the present invention exhibits an appropriate swelling property with respect to the solvent, and therefore, the paint by being swollen by the solvent contained in the paint, printing ink, adhesive, It becomes possible to make close contact with ink and resin material.

ここで、本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物が膨潤性を示す溶剤としては、メチルエチルケトン(MEK)、アセトン、トルエン、シクロヘキサン、ノルマルヘキサン、酢酸エチル、酢酸ブチル、酢酸イソプロピル、塩化メチレンあるいはこれらの混合物が挙げられる。このような溶剤を含む塗料や印刷用インク、接着剤に対して密着することが可能である。例えば、グラビア印刷インキは、樹脂成分が、EVA、変性塩ビ等であり、溶剤がMEK、トルエン、シクロヘキサン、酢酸ブチル等の混合物であり、本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物からなる成形品の印刷用に好適に使用することができる。   Here, as the solvent in which the fine glass-containing styrene-based thermoplastic resin composition of the present invention exhibits swelling properties, methyl ethyl ketone (MEK), acetone, toluene, cyclohexane, normal hexane, ethyl acetate, butyl acetate, isopropyl acetate, methylene chloride Alternatively, a mixture thereof can be mentioned. It is possible to adhere to a paint, printing ink, or adhesive containing such a solvent. For example, in the gravure printing ink, the resin component is EVA, modified vinyl chloride, etc., the solvent is a mixture of MEK, toluene, cyclohexane, butyl acetate, etc., and consists of the fine glass-containing styrene-based thermoplastic resin composition of the present invention. It can be suitably used for printing a molded product.

また、例えば、接着剤としては、アセトン、ノルマルヘキサン、酢酸ブチル等の混合溶剤を用いたウレタン系接着剤、合成ゴム系接着剤により他の素材と良好に接着することができる。
本発明の微細ガラス含有スチレン系熱可塑性樹脂組成物を用いて成形した窓、及び扉とは、食器棚のガラス窓、ドアの飾り窓、浴室の扉、透明な間仕切り等の事である。また、すりガラス調カバーとは照明器カバー、テーブルクロス、化粧板等の事である。
Further, for example, as an adhesive, it can be satisfactorily bonded to other materials by a urethane adhesive or a synthetic rubber adhesive using a mixed solvent such as acetone, normal hexane, and butyl acetate.
The windows and doors formed using the fine glass-containing styrenic thermoplastic resin composition of the present invention are glass windows for cupboards, door decoration windows, bathroom doors, transparent partitions, and the like. In addition, the frosted glass cover is an illuminator cover, a table cloth, a decorative board, and the like.

以下、実施例を挙げ、本発明をさらに詳細に説明する。下記の実施例において、部および%は、特に断らない限り重量基準である。
(1)実施例および比較例に用いた原材料
<スチレン系熱可塑性樹脂>
AS30:旭化成ケミカルズ(株)製 スチレン70%、アクリロニトリル30%
<微細ガラス>
GM1 :日本板硝子株式会社 マイクロガラスフレーク(REF−140A)
アルミナほう珪酸ガラス 99%以上(粒径30〜300μm)
GM2 :ポッターズ・バロティーニ株式会社 ガラスビーズ(EGB731)
<ガラス繊維>
GF :旭ファイバーグラス(株) グラスロンCSA−17F05
Hereinafter, the present invention will be described in more detail with reference to examples. In the following examples, parts and percentages are by weight unless otherwise specified.
(1) Raw materials used in Examples and Comparative Examples <Styrenic thermoplastic resins>
AS30: Asahi Kasei Chemicals Corporation 70% styrene, 30% acrylonitrile
<Fine glass>
GM1: Nippon Sheet Glass Co., Ltd. Micro glass flake (REF-140A)
Alumina borosilicate glass 99% or more (particle size 30 ~ 300μm)
GM2: Potters Barotini Co., Ltd. Glass beads (EGB731)
<Glass fiber>
GF: Asahi Fiber Glass Co., Ltd. Glasslon CSA-17F05

(2)シート作成
ア.射出成形シート
射出成形機(三紀工業製)を用いて、バレル温度240℃、表1中の成形時の金型温度で、15cm×15cm×3mm(厚み)の射出成形シートを得た。
また、そのシートを図1中の4箇所(A−1、A−2、B−1、B−2)でシートに切り出し、下記評価に用いた。
(2) Sheet creation a. Injection Molding Sheet Using an injection molding machine (manufactured by Sanki Industry Co., Ltd.), an injection molded sheet of 15 cm × 15 cm × 3 mm (thickness) was obtained at a barrel temperature of 240 ° C. and a mold temperature during molding shown in Table 1.
Further, the sheet was cut into sheets at four locations (A-1, A-2, B-1, and B-2) in FIG. 1 and used for the following evaluation.

(3)評価方法
1.ヘイズ
上記作成方法で得たそれぞれのシートをヘーズメーターNDH2000(日本電色工業株式会社)を用いて、ヘイズを測定した。
測定したA−1、A−2、B−1、B−2、4点いずれの点においても
ヘイズが20%以下では、透明なため、すりガラスとしては使えない
また、ヘイズが85%以上でも、不透明なため、すりガラスとしては使えない
2.光沢
上記作成方法で得たそれぞれのシートを携帯光沢計HG−268(スガ試験機株式会社)を用いて、測定角度 60°、タングステン電球 5VA60mA光源にて測定した。
4箇所の光沢の平均が、50%未満だと製品表面荒れが大きく外観、耐汚染性等が低下する。
4箇所の光沢の差、△Gが15%以上だと、製品の表面状態に均一性が低くなる。
3.シートの外観
○ すりガラス調で、光の透過が均一で和紙風の風合いがある。
× 表面の荒れがひどく、光の透過も均一ではない。
(3) Evaluation method Haze The haze of each sheet obtained by the above preparation method was measured using a haze meter NDH2000 (Nippon Denshoku Industries Co., Ltd.).
At any of the measured points A-1, A-2, B-1, B-2, 4 points, the haze is 20% or less, so it is transparent and cannot be used as a ground glass. Also, even if the haze is 85% or more, Cannot be used as ground glass because it is opaque. Gloss Each sheet obtained by the above preparation method was measured with a portable gloss meter HG-268 (Suga Test Instruments Co., Ltd.) at a measurement angle of 60 ° and a tungsten bulb 5VA 60 mA light source.
If the average gloss of the four locations is less than 50%, the product surface becomes very rough and the appearance, stain resistance, etc. are reduced.
If the difference in gloss at four locations, ΔG, is 15% or more, the surface condition of the product will be less uniform.
3. Appearance of the sheet ○ It is ground glass-like, has a uniform light transmission, and has a Japanese paper-like texture.
× The surface is very rough and the light transmission is not uniform.

参考実施例1、実施例2〜3および比較例1〜2]
表1に記載の配合比の原材料を用い東芝機械TEM35Bを用いて溶融混練し、微細ガラス含有スチレン系樹脂組成物のペレットを製造した。該ペレットを用い、上記評価方法で評価し、その評価結果を表1に示した。
[ Reference Example 1 , Examples 2 to 3 and Comparative Examples 1 to 2]
The raw materials having the compounding ratios shown in Table 1 were melt-kneaded using Toshiba Machine TEM35B to produce pellets of a fine glass-containing styrene resin composition. The pellets were used for evaluation by the above evaluation method, and the evaluation results are shown in Table 1.

本発明のすりガラス調の成形品は、食器棚のガラス、ドアの飾り窓、浴室の扉、間仕切り、照明器カバー、テーブルクロス等で用いる事ができる。   The frosted glass-like molded product of the present invention can be used in cupboard glass, door decoration windows, bathroom doors, partitions, illuminator covers, table cloths, and the like.

射出成形シートから評価用シートを切り出す概要を説明する図である。It is a figure explaining the outline | summary which cuts out the sheet | seat for evaluation from an injection molding sheet | seat.

Claims (1)

不飽和ニトリル単量体とスチレン単量体の共重合体であるスチレン系熱可塑性樹脂(A)40〜70重量%と微細ガラス(B)30〜60重量%とを混合してなり、且つスチレン系熱可塑性樹脂(A)と微細ガラス(B)との屈折率差が0.02〜0.04である微細ガラス含有スチレン系熱可塑性樹脂組成物を、金型の表面温度が90℃〜150℃で成形して得た、すりガラス調の窓または扉またはカバーに用いる成形品。 Styrene thermoplastic resin (A) 40 to 70 % by weight, which is a copolymer of unsaturated nitrile monomer and styrene monomer, and fine glass (B) 30 to 60% by weight, and styrene A fine glass-containing styrene-based thermoplastic resin composition having a refractive index difference of 0.02 to 0.04 between the thermoplastic thermoplastic resin (A) and the fine glass (B), and a mold surface temperature of 90 ° C. to 150 ° C. Molded product used for ground glass-like windows or doors or covers obtained by molding at .
JP2006012269A 2006-01-20 2006-01-20 Molded product of styrenic thermoplastic resin composition containing fine glass Active JP5147182B2 (en)

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5840504B2 (en) * 1979-02-15 1983-09-06 旭化成株式会社 Injection molding method
JPS57153047A (en) * 1981-03-18 1982-09-21 Asahi Chem Ind Co Ltd Thermoplastic resin composition having ground glass-like appearance
JPH01297465A (en) * 1988-05-25 1989-11-30 Yoshida Kogyo Kk <Ykk> Molded synthetic resin article
JP3374316B2 (en) * 1993-10-05 2003-02-04 住友化学工業株式会社 Light diffusing laminated resin plate
JPH09306217A (en) * 1996-05-10 1997-11-28 Sumitomo Chem Co Ltd Light diffusion plate for cool white fluorescent lamp cover
JPH10100156A (en) * 1996-09-30 1998-04-21 Nippon G Ii Plast Kk Method for obtaining molded product of injection compression molding of thermoplastic resin having high quality appearance
JPH11221882A (en) * 1998-02-05 1999-08-17 Asahi Chem Ind Co Ltd Acrylic resin laminated sheet having crystal-like frosted glass appearance

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