Abstract:
Methods of forming a lightweight reinforced thermoplastic core layer and articles including the core layer are described. In some examples, the methods use a combination of thermoplastic material, reinforcing fibers and bicomponent fibers to enhance retention of lofting agents in the core layer. The processes permit the use of less material while still providing sufficient lofting capacity in the final formed core layer.
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 process for the coating a substrate with a microporous layer includes at least incorporation by mixing of at least one physical and/or chemical blowing agent into an elastomer mixture, shaping of the elastomer mixture including the physical and/or chemical blowing agent by means of a calender or of a roller-head system, and application of the calendered elastomer mixture including the physical and/or chemical blowing agent to a substrate to be coated. Further, heating and blowing of the coating including the physical and/or chemical blowing agent is then provided by means of at least one heat source. In some cases, the blowing agent is composed of microspheres, which in some embodiments, may be present in non-expanded form. In some aspects, the heating and blowing of the coating directly follows the application procedure. The heat source may be an infrared source, such as a ceramic source.
Abstract:
A supercharger system for a vehicle engine comprises a supercharger and a sound isolation unit at least partly surrounding the supercharger. The sound isolation unit comprises an inner layer facing the supercharger, a sound barrier layer facing away from the supercharger and a core there between. All three layers are made from polyurethane but with different densities. Furthermore, the core comprises an open cell structure for sound absorption.
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 (MS160) 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/m3 but not larger than 930 kg/m3 as measured according to JIS K6760, and a melt strength (MS160) 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 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:
DSC 융점(melting point)이 100℃ 이상의 올레핀 블록 공중합체(olefin block copolymer, OBC)와 천연고무 또는 합성고무를 함유하는 중합체; 액상 연화제; 및 가교제, 발포제, 그리고 금속산화물, 스테아린산, 산화방지제, 진크스테아레이트, 티타늄디옥사이드, 가교조제 및 안료로 이루어진 군 중에서 선택되는 1종 이상의 기타 첨가제의 혼합물을 제공하는 단계; 상기 혼합물을 금형에 넣고 승온 조건에서 가압하여 발포함으로써 고분자 폼을 형성하는 단계; 및 상기 발포 후 상기 고분자 폼의 표면을 연마하여 독립 기포를 표면에 노출시키는 단계를 포함하는 콘크리트 펌프 세척용 폼의 제조방법이 제공된다.
Abstract:
The invention relates to a method for the production of a rigid PIR foam composite containing man-made vitreous fibres (MMVF), the method comprising: providing MMVF, wherein at least 50% of the fibres by weight have a length of less than 250 µm; providing a polyol component; mixing the MMVF and polyol component in a ratio such that the amount of MMVF is at least 10% by weight based on total weight of polyol component; emulsifying pentane with the mixture of polyol component and MMVF; inducing foam formation by addition of a further component which comprises isocyanate.