摘要:
The present invention relates to polyolefin resin expanded beads containing multi-layer expanded beads containing a core layer in a foamed state containing a polyolefin resin and a cover layer coated on the core layer, the cover layer containing a mixed resin of a polyolefin resin (A) and at least one resin (B) selected from a polystyrene resin and a polyester resin, and the mixed resin having a weight ratio (A/B) of the polyolefin resin (A) and the resin (B) of from 15/85 to 90/10, and a composite laminated body using an expanded beads molded body thereof, and the expanded beads molded body is excellent in solvent resistance and also excellent in adhesiveness to a thermosetting resin on the surface of the molded body, and can provide a composite laminated body excellent in productivity with a thermosetting resin.
摘要:
An electrostatic dissipative, polypropylene-based resin expanded bead having an expanded core layer of a polypropylene-based resin, and a cover layer that covers the expanded core layer and that is composed of a mixed resin containing electrically conductive carbon black, wherein the mixed resin includes a polypropylene resin which forms a continuous phase and a polyethylene resin which forms dispersed phases dispersed in the continuous phase, with the electrically conductive carbon black being unevenly distributed to the dispersed phases side. In-mold molding of the expanded beads gave a molded article.
摘要:
Polylactic acid-based resin expanded beads of the present invention are obtained by releasing a softened, pressurized foamable resin composition, which comprises a polylactic acid-based resin and a physical blowing agent, to a low pressure atmosphere to foam and expand the resin composition, wherein the polylactic acid-based resin satisfies the conditions (1) to (3) shown below, and exhibits excellent secondary expansion properties and fusion bonding properties. A polylactic acid-based resin expanded beads molded article obtained by in-mold molding of the polylactic acid-based resin expanded beads exhibits excellent mechanical properties. MT≦30 mN (1) log MT≦0.93 log η−1.75 (2) CT1/2≧600 sec (3) where MT represents a melt tension [mN] at 190° C., η represents a melt viscosity [Pa·s] at 190° C. and a shear speed of 20 sec−1, and CT1/2 represents a half crystallization time [sec] at 110° C.
摘要:
An electrostatic dissipative, polypropylene-based resin expanded bead containing electrically conductive carbon black, having an apparent density of 10 to 120 kg/m3 and formed of a base resin which includes a polypropylene resin forming a continuous phase, and a polyethylene resin forming dispersed phases dispersed in the continuous phase, with the carbon black being unevenly distributed to the dispersed phases side. The polyethylene resin is an ethylene homopolymer or a copolymer of ethylene and C4 to C6 α-olefin and a weight ratio of the polypropylene resin to the polyethylene resin is 99.5:0.5 to 65:35. A molded article obtained by in-mold molding of such expanded beads exhibits electrostatic dissipative properties with a surface resistivity in the range of 1×105 to 1×1010Ω in a stable manner.
摘要翻译:含有导电性炭黑的静电耗散性聚丙烯系树脂发泡珠,其表观密度为10〜120kg / m 3,由包含形成连续相的聚丙烯树脂的基础树脂形成,形成分散相的聚乙烯树脂 分散在连续相中,炭黑不均匀地分布在分散相侧。 聚乙烯树脂是乙烯均聚物或乙烯与C 4〜C 6α-烯烃的共聚物,聚丙烯树脂与聚乙烯树脂的重量比为99.5:0.5〜65:35。 通过这种发泡珠的模内成型获得的模制品表现出静电耗散性,表面电阻率在1×105〜1×1010&OHgr的范围内。 以稳定的方式。
摘要:
Polylactic acid-based resin expanded beads obtained by releasing a softened, pressurized foamable resin composition, which has a polylactic acid-based resin and a physical blowing agent, to a low pressure atmosphere to foam and expand the resin composition, where the polylactic acid-based resin satisfies the conditions (1) to (3) shown below, and exhibits excellent secondary expansion properties and fusion bonding properties. A polylactic acid-based resin expanded beads molded article obtained by in-mold molding of the polylactic acid-based resin expanded beads exhibits excellent mechanical properties. MT≤30 mN (1) log MT≤0.93 log η−1.75 (2) CT1/2≥600 sec (3) where MT represents a melt tension [mN] at 190° C., η represents a melt viscosity [Pa·s] at 190° C. and a shear speed of 20 sec−1, and CT1/2 represents a half crystallization time [sec] at 110° C.
摘要:
The present invention relates to polyolefin resin expanded beads containing multi-layer expanded beads containing a core layer in a foamed state containing a polyolefin resin and a cover layer coated on the core layer, the cover layer containing a mixed resin of a polyolefin resin (A) and at least one resin (B) selected from a polystyrene resin and a polyester resin, and the mixed resin having a weight ratio (A/B) of the polyolefin resin (A) and the resin (B) of from 15/85 to 90/10, and a composite laminated body using an expanded beads molded body thereof, and the expanded beads molded body is excellent in solvent resistance and also excellent in adhesiveness to a thermosetting resin on the surface of the molded body, and can provide a composite laminated body excellent in productivity with a thermosetting resin.
摘要:
An electrostatic dissipating molded article having a surface resistivity of 1×105 to 1×1010Ω and obtained by in-mold molding of multi-layered polyolefin-based resin expanded beads each having an polyolefin-based resin expanded core layer and a polyolefin-based resin cover layer which covers the polyolefin-based resin expanded core layer and which is formed from a polyolefin-based resin (A), a polymeric antistatic agent (B) of a block copolymer of a polyether block and a polyolefin block, and an electrically conductive carbon black (C), the components (A) to (C) being present in a specific proportion.
摘要:
A polylactic acid-based resin foamed molded article having a voidage of 5 to 45% by volume, a bulk density BD [g/cm3] of 0.01 to 0.2 g/cm3 and a ratio FT/BD of a flexural strength FT [MPa] thereof to the bulk density BD in the range of 6 to 25 MPa·cm3/g.
摘要:
An electrostatic dissipative, polypropylene-based resin expanded bead having an expanded core layer of a polypropylene-based resin, and a cover layer that covers the expanded core layer and that is composed of a mixed resin containing electrically conductive carbon black, wherein the mixed resin includes a polypropylene resin which forms a continuous phase and a polyethylene resin which forms dispersed phases dispersed in the continuous phase, with the electrically conductive carbon black being unevenly distributed to the dispersed phases side. In-mold molding of the expanded beads gave a molded article.
摘要:
A process for producing polylactic acid-based resin expanded beads comprises releasing foamable resin particles, which are in a softened state and dispersed in a dispersing medium contained in a pressure resisting closed vessel, to an atmosphere having a pressure lower than that in the closed vessel together with the dispersing medium to foam and expand the foamable particles. The foamable resin particles are obtained by impregnating a physical blowing agent into resin particles which are formed of a modified polylactic acid resin modified with an epoxide and showing specific physical properties when melted.