JP2007084698A - Thermoplastic resin molded article - Google Patents
Thermoplastic resin molded article Download PDFInfo
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- JP2007084698A JP2007084698A JP2005275523A JP2005275523A JP2007084698A JP 2007084698 A JP2007084698 A JP 2007084698A JP 2005275523 A JP2005275523 A JP 2005275523A JP 2005275523 A JP2005275523 A JP 2005275523A JP 2007084698 A JP2007084698 A JP 2007084698A
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- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 50
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 24
- 239000011342 resin composition Substances 0.000 claims abstract description 9
- 230000003746 surface roughness Effects 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 description 20
- 239000011347 resin Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 12
- -1 polypropylene Polymers 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000012784 inorganic fiber Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 238000005187 foaming Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229920006167 biodegradable resin Polymers 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- UVCJGUGAGLDPAA-UHFFFAOYSA-N ensulizole Chemical compound N1C2=CC(S(=O)(=O)O)=CC=C2N=C1C1=CC=CC=C1 UVCJGUGAGLDPAA-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920009537 polybutylene succinate adipate Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本発明は、肌触りの良い熱可塑性樹脂成形体に関する。 The present invention relates to a thermoplastic resin molded article having a good touch.
樹脂成形体の機械的強度を高めるため、ガラス繊維等の無機繊維を配合したものが汎用されている（特許文献１〜４）。しかし、無機繊維が配合された樹脂成形体は、焼却時に無機繊維に由来する残渣が発生して、この残渣を埋め立て処理等する必要があるため、無機繊維を使用しない樹脂成形体が求められている。 In order to increase the mechanical strength of the resin molded body, those containing inorganic fibers such as glass fibers are widely used (Patent Documents 1 to 4). However, a resin molded body containing inorganic fibers generates a residue derived from inorganic fibers at the time of incineration, and this residue needs to be landfilled. Therefore, a resin molded body that does not use inorganic fibers is required. Yes.
特許文献５には、樹脂と木粉を混合して木粉含有コンパウンドを製造する方法が記載されている。
特許文献５に記載の方法により得られた木粉含有コンパウンドからなる成形体は、焼却時に燃焼残渣を生じない点で優れているが、成形体は重く、機械的強度も充分ではなく、肌触りも良くない。 The molded body made of the wood powder-containing compound obtained by the method described in Patent Document 5 is excellent in that it does not produce combustion residues during incineration, but the molded body is heavy, the mechanical strength is not sufficient, and the touch is also good. Not good.
本発明は、特に肌触りが良い熱可塑性樹脂成形体を提供することを課題とする。 An object of the present invention is to provide a thermoplastic resin molded article having particularly good touch.
本発明は、課題の解決手段として、熱可塑性樹脂とセルロース繊維を含有する熱可塑性樹脂組成物からなり、表面粗さ（Ｒａ）が０．８μm以上である、熱可塑性樹脂成形体を提供する。 As a means for solving the problems, the present invention provides a thermoplastic resin molded article comprising a thermoplastic resin composition containing a thermoplastic resin and cellulose fibers and having a surface roughness (Ra) of 0.8 μm or more.
本発明の熱可塑性樹脂成形体は、木肌にも似た好ましいすべり感のある肌触り性を有している。 The thermoplastic resin molded article of the present invention has a preferable slipperiness that is similar to that of wood.
本発明の熱可塑性樹脂成形体の製造原料となる樹脂組成物は、熱可塑性樹脂とセルロース繊維、及び必要に応じて他の添加剤を含有するものである。 The resin composition used as a raw material for producing the thermoplastic resin molded article of the present invention contains a thermoplastic resin, cellulose fibers, and other additives as required.
熱可塑性樹脂としては、オレフィン系樹脂（好ましくはポリプロピレン）、スチレン系樹脂（ホモポリマー、ＡＳ樹脂、ＨＩＰＳ等）、ゴム含有スチレン系樹脂（ＡＢＳ樹脂、ＡＥＳ樹脂、ＡＢＳＭ樹脂、ＡＡＳ樹脂等）、ポリアミド樹脂、ポリブチレンテレフタレート樹脂、、ポリブチレンテレフタレート樹脂、ポリカーボネート樹脂、非結晶（透明）ナイロン（メタ）アクリル系樹脂、ポリアセタール樹脂、ポリフェニレンエーテル樹脂、アクリロニトリル・スチレン共重合樹脂、生分解性樹脂（ＰＢＳ系、ＰＢＳＡ系、ＰＣＬ系、ＰＬＡ系、セルロースアセテート系）等を挙げることができ、これらの熱可塑性樹脂は、単独で又は２種類以上を混合して用いることができる。また、これらの重合体を主体とする共重合体若しくは混合物、これらにゴム又はゴム状樹脂等のエラストマーを配合した熱可塑性樹脂、及びこれらの樹脂を１０質量％以上含有するポリマーアロイ等も挙げることができる。 Thermoplastic resins include olefin resins (preferably polypropylene), styrene resins (homopolymers, AS resins, HIPS, etc.), rubber-containing styrene resins (ABS resins, AES resins, ABSM resins, AAS resins, etc.), polyamides Resin, polybutylene terephthalate resin, polybutylene terephthalate resin, polycarbonate resin, amorphous (transparent) nylon (meth) acrylic resin, polyacetal resin, polyphenylene ether resin, acrylonitrile / styrene copolymer resin, biodegradable resin (PBS type) , PBSA-based, PCL-based, PLA-based, cellulose acetate-based) and the like. These thermoplastic resins can be used alone or in admixture of two or more. Further, a copolymer or a mixture mainly composed of these polymers, a thermoplastic resin in which an elastomer such as rubber or rubber-like resin is blended, and a polymer alloy containing 10% by mass or more of these resins may be mentioned. Can do.
セルロース繊維は、αセルロースの含有率が８０質量％以上のものが好ましく、より好ましくは８５質量％以上、更に好ましくは９０質量％以上のものである。 The cellulose fibers preferably have an α-cellulose content of 80% by mass or more, more preferably 85% by mass or more, and still more preferably 90% by mass or more.
平均繊維径は、好ましくは０．１〜１０００μｍ、より好ましくは１００μｍ以下、更に好ましくは１０〜５０μｍ、特に好ましくは２０〜３０μｍである。 The average fiber diameter is preferably 0.1 to 1000 μm, more preferably 100 μm or less, still more preferably 10 to 50 μm, and particularly preferably 20 to 30 μm.
平均繊維長さは、好ましくは０．０１〜１００ｍｍ、より好ましくは０．０１〜５０ｍｍ、更に好ましくは０．１〜１０ｍｍ、特に好ましくは０．１〜５ｍｍである。 The average fiber length is preferably 0.01 to 100 mm, more preferably 0.01 to 50 mm, still more preferably 0.1 to 10 mm, and particularly preferably 0.1 to 5 mm.
セルロース繊維の配合量は、熱可塑性樹脂１００質量部に対して、１〜５００質量部、好ましくは３〜３００質量部、より好ましくは５〜２００質量部、更に好ましくは１０〜１５０質量部である。 The blending amount of the cellulose fiber is 1 to 500 parts by mass, preferably 3 to 300 parts by mass, more preferably 5 to 200 parts by mass, and still more preferably 10 to 150 parts by mass with respect to 100 parts by mass of the thermoplastic resin. .
樹脂組成物には、必要に応じて、カーボンブラック、無機顔料、有機顔料、染料、助色剤、分散剤、安定剤、可塑剤、改質剤、紫外線吸収剤又は光安定剤、酸化防止剤、帯電防止剤、潤滑剤、離型剤、結晶促進剤、結晶核剤、及び耐衝撃性改良用のエラストマー等を配合することができる。 For the resin composition, carbon black, inorganic pigment, organic pigment, dye, auxiliary colorant, dispersant, stabilizer, plasticizer, modifier, ultraviolet absorber or light stabilizer, antioxidant, if necessary Antistatic agents, lubricants, mold release agents, crystal accelerators, crystal nucleating agents, elastomers for improving impact resistance, and the like can be blended.
本発明の熱可塑性樹脂成形体は、好ましい肌触り感を付与するため、表面粗さ（ＪＩＳ Ｂ０６０１−１９９４）（算術平均粗さ；Ｒａ）が０．８μm以上であり、好ましくは０．８〜２０μm、より好ましくは１．０〜１０μmである。 The thermoplastic resin molded article of the present invention has a surface roughness (JIS B0601-1994) (arithmetic average roughness; Ra) of 0.8 μm or more, preferably 0.8 to 20 μm, in order to give a preferable touch feeling. More preferably, the thickness is 1.0 to 10 μm.
本発明の熱可塑性樹脂成形体は、好ましい肌触り感を付与するため、表面粗さ（ＪＩＳ Ｂ０６０１−１９９４）（算術平均粗さ；Ｒａ）以外にも、ＪＩＳ Ｂ０６０１−１９９４にて規定されている最大高さ（Ｒｙ）、算術平均傾斜（Δａ）、二乗平均傾斜（Δｑ）、ピークカウントを所定範囲に設定することができる。 The thermoplastic resin molded article of the present invention has the maximum specified in JIS B0601-1994 in addition to the surface roughness (JIS B0601-1994) (arithmetic mean roughness; Ra) in order to give a preferable touch feeling. The height (Ry), arithmetic average slope (Δa), root mean square slope (Δq), and peak count can be set within a predetermined range.
本発明の熱可塑性樹脂成形体は、熱可塑性樹脂成形体表面の５０ｃｍ２当たり、最大径又は最大長さが１ｍｍ以上の未解繊又は解繊されたセルロース繊維の塊の数が１０個以下であることが好ましく、より好ましくは５個以下である。最大径とは、球の場合には直径を意味し、楕円の場合には長径を意味し、不定形の場合には最大長さを意味する。 The thermoplastic resin molded body of the present invention has 10 or less lump of undefibrated or defibrated cellulose fibers having a maximum diameter or maximum length of 1 mm or more per 50 cm 2 of the surface of the thermoplastic resin molded body. It is preferable that there is, more preferably 5 or less. The maximum diameter means the diameter in the case of a sphere, the long diameter in the case of an ellipse, and the maximum length in the case of an indefinite shape.
このようにセルロース繊維の塊の数が１０個以下であることにより、成形体の外観が美しくなるだけでなく、表面が過度にざらつくことがなく、好ましい肌触り感を付与できる。 Thus, when the number of the lump of the cellulose fiber is 10 or less, not only the appearance of the molded body becomes beautiful, but the surface is not excessively roughened, and a preferable touch feeling can be imparted.
本発明の熱可塑性樹脂成形体は、非発泡構造でもよいし、発泡構造でもよいが、嵩密度が０．４〜１．５ｇ／ｃｍ３であることが好ましく、０．５〜１．４ｇ／ｃｍ３であることがより好ましく、０．６〜１．３ｇ／ｃｍ３であることがより好ましい。嵩密度を前記範囲にすることで、軽量化することができるため、人が触れる物や部分の構成材料として適用することが容易になり、好ましい肌触り感を付与できる。 The thermoplastic resin molded article of the present invention may have a non-foamed structure or a foamed structure, but preferably has a bulk density of 0.4 to 1.5 g / cm 3 , and 0.5 to 1.4 g / cm 3. More preferably, it is cm 3 , and more preferably 0.6 to 1.3 g / cm 3 . By making the bulk density within the above range, the weight can be reduced, so that it can be easily applied as a constituent material of an object or a part touched by a person, and a preferable touch feeling can be imparted.
また本発明の熱可塑性樹脂成形体は、用途によって重厚感を付与することが好ましい場合には、圧縮成形することで、嵩密度を１．５ｇ／ｃｍ３よりも大きくすることができる。この場合にも肌触り感は損なわれない。 Moreover, when it is preferable to give a heavy feeling depending on the application, the thermoplastic resin molded body of the present invention can be made to have a bulk density of more than 1.5 g / cm 3 by compression molding. Even in this case, the feeling of touch is not impaired.
次に、本発明の熱可塑性樹脂成形体の製造方法を説明する。熱可塑性樹脂とセルロース繊維を混合する際、セルロース繊維を解繊し、熱可塑性樹脂に分散させる。このような解繊を用いた方法の具体例としては、下記の方法１と方法２を挙げることができる。 Next, the manufacturing method of the thermoplastic resin molding of this invention is demonstrated. When mixing the thermoplastic resin and the cellulose fiber, the cellulose fiber is defibrated and dispersed in the thermoplastic resin. Specific examples of the method using such defibrating include the following method 1 and method 2.
（方法１）
熱可塑性樹脂及びセルロース繊維（例えば、パルプシート又はその切断物）を上記比率範囲で使用し（望ましくは予め予備混合する）、これらをヘンシェルミキサー（例えば、三井鉱山社製、ヒーター付き）に投入し、攪拌しながら加温する。このときの条件は次のとおりである。
(Method 1)
Use a thermoplastic resin and cellulose fiber (for example, pulp sheet or a cut product thereof) in the above ratio range (preferably premixed in advance), and put them into a Henschel mixer (for example, Mitsui Mining Co., Ltd., equipped with a heater). Warm with stirring. The conditions at this time are as follows.
混合槽容量２０Lのミキサー内に、熱可塑性樹脂及びセルロース繊維の合計１０００〜３０００ｇを投入し、使用した樹脂の溶融温度近傍にて、周速１０〜５０m/secで、１０〜３０分間混練する。 A total of 1000 to 3000 g of the thermoplastic resin and cellulose fiber is put into a mixer having a mixing tank capacity of 20 L and kneaded at a peripheral speed of 10 to 50 m / sec for 10 to 30 minutes in the vicinity of the melting temperature of the used resin.
（方法２）
Ａ）成分の熱可塑性樹脂、（Ｂ）成分のセルロース繊維、を予備混合したもの５０ｋｇを、２軸高混練型押出機〔例えば、シーティーイー社製，ＨＴＭ６５，スクリュー径６５ｍｍ、ホットカット（水中）カット付き〕に投入し、使用した樹脂の溶融温度近傍にて、スクリュー回転数２００〜８００ｒ／ｍで溶融混練する。
(Method 2)
50 kg of a premixed A) component thermoplastic resin and (B) cellulose fiber were mixed into a twin-screw high-kneading type extruder [for example, HTM65, screw diameter 65 mm, hot cut (underwater ) With cut, and melt kneaded at a screw rotation speed of 200 to 800 r / m in the vicinity of the melting temperature of the resin used.
続いて、方法１と方法２等により溶融混練した樹脂組成物を所望形状に成形する。なお、熱可塑性樹脂成形体を発泡構造のものにする場合には、予め樹脂組成物に公知の発泡剤を混合しておき、成形時に発泡処理をする。 Subsequently, the resin composition melt-kneaded by Method 1 and Method 2 is formed into a desired shape. In addition, when making a thermoplastic resin molding into a thing of a foam structure, a well-known foaming agent is mixed with a resin composition previously, and a foaming process is carried out at the time of shaping | molding.
本発明の熱可塑性樹脂成形体は、上記方法１及び方法２を適用することで、樹脂中にセルロース繊維が均一に分散された成形体が得られるため、熱可塑性樹脂とセルロース繊維の量を所定範囲で調整することにより、所定の表面粗（Ｒａ）さを有する熱可塑性樹脂成形体を得ることができる。 In the thermoplastic resin molded body of the present invention, by applying the method 1 and the method 2, a molded body in which cellulose fibers are uniformly dispersed in the resin can be obtained. Therefore, the amounts of the thermoplastic resin and the cellulose fibers are predetermined. By adjusting within the range, a thermoplastic resin molded article having a predetermined surface roughness (Ra) can be obtained.
また本発明の熱可塑性樹脂成形体は、射出成形法を適用して製造する場合には、内表面を所定粗さにした金型を用いることにより、得られた熱可塑性樹脂成形体の表面粗さ（Ｒａ）が所定範囲になるようにすることができる。 Further, when the thermoplastic resin molded article of the present invention is manufactured by applying an injection molding method, the surface roughness of the obtained thermoplastic resin molded article is obtained by using a mold having an inner surface of a predetermined roughness. The thickness (Ra) can be set within a predetermined range.
また本発明の熱可塑性樹脂成形体は、成形後、公知の表面荒らし処理、例えば、サンドペーパー、サンドブラスト等の処理をすることで、得られた熱可塑性樹脂成形体の表面粗さ（Ｒａ）が所定範囲になるようにすることができる。 Moreover, the thermoplastic resin molded body of the present invention has a surface roughness (Ra) of the obtained thermoplastic resin molded body by performing a known surface roughening treatment such as sandpaper or sandblasting after molding. The predetermined range can be obtained.
本発明の製造方法では、上記したようにセルロース繊維を解繊した上で、熱可塑性樹脂に分散させているため、最終的に得られた成形体中において、セルロース繊維がほぼ均一に分散されている。このため、非発泡構造であっても、実質的に発泡構造と類似の構造（成形体中に微少な間隙が存在している構造）にすることができる。 In the production method of the present invention, since the cellulose fibers are defibrated as described above and dispersed in the thermoplastic resin, the cellulose fibers are dispersed almost uniformly in the finally obtained molded body. Yes. For this reason, even if it is a non-foaming structure, it can be made into a structure substantially similar to the foaming structure (a structure in which a minute gap exists in the molded body).
本発明の熱可塑性樹脂成形体は、肌触りが良好であるため、人が触れるような用途に適しており、建築材料、内装材料、自動車の内装材料、日用雑貨等に使用することができ、具体的には、手摺り、ドアノブ、テーブルや机の天板、コースター、カップの受け皿、床材、壁材等に適している。 The thermoplastic resin molded body of the present invention has a good touch and is suitable for use by humans, and can be used for building materials, interior materials, automotive interior materials, daily goods, etc. Specifically, it is suitable for handrails, door knobs, table tops, desk tops, coasters, cup trays, floor materials, wall materials, and the like.
実施例１〜３、比較例２
表１に示す各成分からなる樹脂組成物を用い、押出機により、成形体を製造した。セルロース繊維は、上記した方法１により解繊して、熱可塑性樹脂と混合した。押出機は４０ｍｍ単軸押出機、ダイスは２００×１０ｍｍのシートダイを用いた。押出条件は下記のとおりである。
Examples 1 to 3, Comparative Example 2
Using the resin composition comprising each component shown in Table 1, a molded body was produced by an extruder. The cellulose fiber was defibrated by the above-described method 1 and mixed with a thermoplastic resin. The extruder used was a 40 mm single screw extruder, and the die used was a 200 × 10 mm sheet die. Extrusion conditions are as follows.
実施例４〜６、比較例１、３〜４
表１に示す各成分からなる樹脂組成物を用い、射出成形により、５０ｍｍ×９０ｍｍ×２ｍｍｔのカラープレート成形体を製造した。シリンダー温度２１０℃、金型温度５０℃
実施例４〜５と比較例３は、カラープレート表面をシボ加工したグレインCの砂シボプレートであり、実施例６と比較例４は、カラープレート表面が鏡面である鏡面プレートである。実施例６については、成形したカラープレートをサンド処理した。
Examples 4-6, Comparative Examples 1, 3-4
Using a resin composition composed of each component shown in Table 1, a 50 mm × 90 mm × 2 mmt color plate molded body was produced by injection molding. Cylinder temperature 210 ° C, mold temperature 50 ° C
Examples 4 to 5 and Comparative Example 3 are grain C sand texture plates in which the color plate surface is textured, and Examples 6 and Comparative Example 4 are mirror surface plates in which the color plate surface is a mirror surface. For Example 6, the molded color plate was sanded.
（押出条件）
Ｃ１：２００℃
Ｃ２：２１０℃
Ｃ３：２２０℃
Ｃ４：２３０℃
ＡＤ：２３０℃
ダイス：２３０℃
サイジング温度：１７５〜１９０℃
スクリュー回転数：８０rpm
引き取り速度：０．１５〜０．３０m/min
（表１の成分）
ＰＭＢ６０Ａ：ポリプロピレン，サンアロマー社製
ＰＭＢ７０Ａ：ポリプロピレン，サンアロマー社製
溶解パルプ：日本製紙社製，溶解パルプＮＤＰ−Ｔ，平均繊維径約３０μm，平均繊維長さ約２ｍｍ，αセルロース含有量９０％
ユーメックス1010：酸変性ポリプロピレン，三洋化成工業社製
（試験方法）
（１）表面粗さ（算術平均粗さ；Ｒａ）：ＪＩＳ Ｂ０６０１−１９９４
（２）肌触り性
３０〜４０歳代の男性５名、女性５名の計１０名のパネルが、縦２００ｍｍ、横４００ｍｍ、厚み１０ｍｍの成形体及び縦５０、横９０、厚み２ｍｍの成形体を手で触ったときの感触を官能評価した。評価は、比較例１の組成物から得られた成形体を基準として、感触の良かったものを良好とし、同じか悪かったものを不良とした。
(Extrusion conditions)
C1: 200 ° C
C2: 210 ° C
C3: 220 ° C
C4: 230 ° C
AD: 230 ° C
Dice: 230 ° C
Sizing temperature: 175-190 ° C
Screw rotation speed: 80rpm
Take-off speed: 0.15 to 0.30 m / min
(Ingredients in Table 1)
PMB60A: Polypropylene, manufactured by Sun Allomer PMB70A: Polypropylene, manufactured by Sun Allomer Dissolved pulp: manufactured by Nippon Paper Industries Co., Ltd., dissolved pulp NDP-T, average fiber diameter of about 30 μm, average fiber length of about 2 mm, α cellulose content of 90%
Umex 1010: Acid-modified polypropylene, manufactured by Sanyo Chemical Industries (Test method)
(1) Surface roughness (arithmetic mean roughness; Ra): JIS B0601-1994
(2) Touchability A total of 10 panels of 5 males and 30 females in the age of 30 to 40 years are formed into a molded body having a length of 200 mm, a width of 400 mm, a thickness of 10 mm, and a molded body having a length of 50, width 90, and a thickness of 2 mm. Sensory evaluation of the touch when touched by hand was performed. The evaluation was based on the molded body obtained from the composition of Comparative Example 1, with good feel and good and bad or bad.
実施例１〜６の成形体は、比較例１の成形体（平滑なプラスチックの感触）に比べると、１０名のパネル全員が、木肌に近似した、適度なざらつき感のある好ましい感触であったと評価した。なお、実施例１〜６は、成形体表面の５０ｃｍ２当たり、最大径又は最大長さが１ｍｍ以上の未解繊又は解繊されたのセルロース繊維の塊の数は２個以下であった。 Compared to the molded body of Comparative Example 1 (smooth plastic feel), the molded bodies of Examples 1 to 6 all had a favorable feel with an appropriate roughness, similar to the bark. evaluated. In Examples 1 to 6, the number of unfibrillated or defibrated cellulose fibers having a maximum diameter or maximum length of 1 mm or more per 50 cm 2 of the molded body surface was 2 or less.
Claims (6)
It is a foam structure, The thermoplastic resin molded object in any one of Claims 1-5.
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| JP2010150313A (en) * | 2008-12-24 | 2010-07-08 | Mitsubishi Engineering Plastics Corp | Polyacetal resin composition and molded article formed by molding the same |
| WO2010119826A1 (en) * | 2009-04-15 | 2010-10-21 | ポリプラスチックス株式会社 | Cellulose fiber-reinforced polyacetal resin composition |
| JP7021279B2 (en) | 2019-05-23 | 2022-02-16 | ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド | Ornaments made of natural elastomer material |
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| JP2002146116A (en) * | 2000-11-13 | 2002-05-22 | Calp Corp | Polyolefin-based resin composition |
| JP2003191229A (en) * | 2001-12-26 | 2003-07-08 | Daicel Chem Ind Ltd | Production method of cellulose fiber reinforced resin |
| JP2004320670A (en) * | 2003-04-21 | 2004-11-11 | Onkyo Corp | Molding composition, speaker unit mounting member using it, and speaker system using them |
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| JPH0625478A (en) * | 1991-10-31 | 1994-02-01 | Himont Inc | Polyolefin composition and its preparation |
| JP2002146116A (en) * | 2000-11-13 | 2002-05-22 | Calp Corp | Polyolefin-based resin composition |
| JP2003191229A (en) * | 2001-12-26 | 2003-07-08 | Daicel Chem Ind Ltd | Production method of cellulose fiber reinforced resin |
| JP2004320670A (en) * | 2003-04-21 | 2004-11-11 | Onkyo Corp | Molding composition, speaker unit mounting member using it, and speaker system using them |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010150313A (en) * | 2008-12-24 | 2010-07-08 | Mitsubishi Engineering Plastics Corp | Polyacetal resin composition and molded article formed by molding the same |
| WO2010119826A1 (en) * | 2009-04-15 | 2010-10-21 | ポリプラスチックス株式会社 | Cellulose fiber-reinforced polyacetal resin composition |
| JP7021279B2 (en) | 2019-05-23 | 2022-02-16 | ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド | Ornaments made of natural elastomer material |
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