Abstract:
A polyurethane foam having an initial UL 94 vertical flame classification of V-0 and maintaining a UL 94 vertical flame classification of V-0 after one week of heat aging at 150° C. is formed as the reaction product of an isocyanate component and an isocyanate-reactive component in the presence of a blowing agent. The isocyanate component includes an isocyanate-containing compound and a non-reactive phosphorous compound that is present in an amount ranging from 1 to 20 weight percent based on the total weight of the polyurethane foam. The isocyanate-reactive component includes a polyether polyol and expandable graphite that is present in an amount ranging from 3 to 30 weight percent based on the total weight of the polyurethane foam.
Abstract:
A crosslinked polyolefin foam that is a crosslinked foam of a polyolefin resin composition, the composition comprising a polyolefin resin (A) and a rubber (B) having a Mooney viscosity (ML 1+4 , 100°C) of 15 to 85. The rubber (B) is contained in an amount of 10 to 150 parts by mass relative to 100 parts by mass of the polyolefin resin (A). The foam has a thickness of 1.5 mm or more, a 25% compressive hardness of 60 kPa or less, and a crosslinking degree of at least one of surface layers at both surfaces with a depth of 500 µm from the surface that is at least 5% higher than the crosslinking degree of the middle layer excluding the both surface layers.
Abstract:
A resin composition for injection molding comprising (I) 70-90 wt. parts of a propylene polymer resin having a MFR of at least 30 g/10 min. but smaller than 200 g/10 min. as measured at 230°C according to ASTM D-1238, (II) 5-25 wt. parts of an ethylene-α-olefin copolymer having a melt strength (MS 160 ) of larger than 50 mN but not larger than 300 mN as measured at 160°C, and (III) 5-25 wt. parts of an olefin polymer resin having a density of at least 850 kg/m 3 but not larger than 930 kg/m 3 as measured according to JIS K6760, and a melt strength (MS 160 ) of smaller than 30 mN as measured at 160°C, wherein the sum of (I), (II) and (III) is 100 wt. parts. This resin composition gives an injection molded article exhibiting enhanced impact strength at a low temperature and having no or minimized flow marks on the surface thereof.
Abstract:
Provided is a phenol resin foam that has low initial thermal conductivity and that retains low thermal conductivity for a long period of time. The present phenol resin foam may contain a cyclopentane and a high-boiling hydrocarbon with a boiling point of from 120 °C to 550 °C and may have a density of from 10 kg/m 3 to 150 kg/m 3 . The content of the cyclopentane in the phenol resin foam per 22.4 × 10 -3 m 3 space volume in the phenol resin foam is from 0.25 mol to 0.85 mol.
Abstract translation:本发明提供一种初始导热系数低,长时间保持低导热系数的酚醛树脂发泡体。 本发明的酚醛树脂发泡体可以包含环戊烷和沸点为120-550℃的高沸点烃,并且可以具有10kg / m 3至150kg / m 3的密度。 酚醛树脂发泡体中的每22.4×10 -3 m 3空间体积中的酚醛树脂发泡体中的环戊烷的含量为0.25摩尔〜0.85摩尔。
Abstract:
A polyolefin material that is formed by solid state drawing of a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.
Abstract:
Provided is a method for manufacturing a concrete pump cleaning foam. The method comprises: providing a mixture of a polymer containing an olefin block copolymer (OBC) having a DSC melting point of 100 °C or higher and a natural or synthetic rubber, a liquid softening agent, and one or more additives selected from the group consisting of a crosslinking agent, a foaming agent, a metal oxide, stearic acid, an antioxidant, zinc stearate, titanium dioxide, a crosslinking coagent, and a pigment; placing the mixture in a mold and pressurizing the mixture at elevated temperature to form a polymer foam; and after the foaming, polishing the surface of the polymer foam to separate closed cells into a surface.
Abstract:
Provided is a method for manufacturing a concrete pump cleaning foam. The method comprises: providing a mixture of a polymer containing an olefin block copolymer (OBC) having a DSC melting point of 100 °C or higher and a natural or synthetic rubber, a liquid softening agent, and one or more additives selected from the group consisting of a crosslinking agent, a foaming agent, a metal oxide, stearic acid, an antioxidant, zinc stearate, titanium dioxide, a crosslinking coagent, and a pigment; placing the mixture in a mold and pressurizing the mixture at elevated temperature to form a polymer foam; and after the foaming, polishing the surface of the polymer foam to separate closed cells into a surface.
Abstract:
A polyolefin material that is formed by solid state drawing of a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.
Abstract:
Provided is a phenol resin foam that has low initial thermal conductivity and that retains low thermal conductivity for a long period of time. The present phenol resin foam may contain a cyclopentane and a high-boiling hydrocarbon with a boiling point of from 120 °C to 550 °C and may have a density of from 10 kg/m 3 to 150 kg/m 3 . The content of the cyclopentane in the phenol resin foam per 22.4 × 10 -3 m 3 space volume in the phenol resin foam is from 0.25 mol to 0.85 mol.
Abstract translation:本发明提供一种初始导热系数低,长时间保持低导热系数的酚醛树脂发泡体。 本发明的酚醛树脂发泡体可以含有环戊烷和沸点为120-550℃的高沸点烃,并且可以具有10kg / m 3至150kg / m 3的密度。 酚醛树脂发泡体中的22.4×10 -3 m 3空间体积中的酚醛树脂发泡体中的环戊烷的含量为0.25摩尔〜0.85摩尔。
Abstract:
A polyolefin material that is formed by solid state drawing of a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.