摘要:
The present invention relates to a resin composition for a mold, a mold constructed by using the composition and a molding method using the mold. This resin composition comprises a thermoplastic resin, an inorganic fibrous reinforcing material and an inorganic particulate filler, and has a bending strength of 1000 kgf/cm² or higher, a modulus of elasticity in bending of 70000 kgf/cm² or higher, and it can be cut and worked. The heat deformation temperature of the composition may be higher than 180 °C. With this composition it is possible to provide a core or a cavity in a mold which is cut and finished with a good dimensional precision, at low cost and in a short period and is durable and recyclable. The mold can be applied to various types of molding methods using various types of materials and when so used it can provide molded products with good precision and at low costs.
摘要翻译:本发明涉及一种模具用树脂组合物,使用该组合物构成的模具和使用该模具的成型方法。 该树脂组合物包含热塑性树脂,无机纤维增强材料和无机颗粒填料,弯曲强度为1000kgf / cm 2以上,弯曲弹性模量为70000kgf / cm 2或 更高,可以削减和工作。 组合物的热变形温度可以高于180℃。通过该组合物,可以在模具中提供芯或空腔,其以低成本和短时间以良好的尺寸精度进行切割和精加工 并且是耐用和可回收的。 该模具可以应用于使用各种类型的材料的各种成型方法,并且当这样使用时,其可以以高成本提供高精度和低成本的模制产品。
摘要:
A power transmission belt wherein at least a portion thereof is formed as a composite of 1 to 100 parts by weight of whiskers (25) distributed in 100 parts by weight of rubber. The composite may form the compression section of the belt. The composite may be utilized as impregnating rubber for a fabric cover portion of the belt. The whiskers preferably have a diameter in the range of approximate 0.1 micron to 1.0 micron, and a length of approximately 10 microns to 500 microns. In the illustrated embodiment, the whiskers are acicular single crystal whiskers.
摘要:
The invention relates to granulates containing high and/or ultra-high molecular weight polyethylenes and fillers and/or reinforcing agents. Any homo- and copolymers can be used as the high or ultra-high molecular weight polyethylenes, provided that said homo- and copolymers have a high or ultra-high molecular weight and are derived from ethylene as the monomer, which is used optionally in combination with additional ethylenically unsaturated hydrocarbons or combinations thereof. Preferred fillers are carbon black, graphite, metal powder, such as aluminium powder and mineral powder, such as wollastonite. Preferred reinforcing agents are glass, carbon or metal fibres. The filler and/or reinforcing-agent content in the inventive granulate is usually up to 60 wt. %, in relation to the granulate. A range of between 0.1 and 40 wt. % is preferred. The invention also relates to a method for producing granulates containing HMW and/or UHMW polyethylenes and fillers and/or reinforcing agents with the aid of an extruder, preferably a single-screw extruder, whose screw shaft is divided into a feed zone, a conversion zone and a delivery zone and is configured, at least in the conversion zone, as a barrier screw.
摘要:
The invention relates to granulates containing high and/or ultra-high molecular weight polyethylenes and fillers and/or reinforcing agents. Any homo- and copolymers can be used as the high or ultra-high molecular weight polyethylenes, provided that said homo- and copolymers have a high or ultra-high molecular weight and are derived from ethylene as the monomer, which is used optionally in combination with additional ethylenically unsaturated hydrocarbons or combinations thereof. Preferred fillers are carbon black, graphite, metal powder, such as aluminium powder and mineral powder, such as wollastonite. Preferred reinforcing agents are glass, carbon or metal fibres. The filler and/or reinforcing-agent content in the inventive granulate is usually up to 60 wt. %, in relation to the granulate. A range of between 0.1 and 40 wt. % is preferred. The invention also relates to a method for producing granulates containing HMW and/or UHMW polyethylenes and fillers and/or reinforcing agents with the aid of an extruder, preferably a single-screw extruder, whose screw shaft is divided into a feed zone, a conversion zone and a delivery zone and is configured, at least in the conversion zone, as a barrier screw.
摘要:
A thermoplastic resin composition suitable for profile extrusion, comprising: (A1) 50 to 99.5% by weight of a thermoplastic aromatic polycarbonate resin; (A2) 0 to 40% by weight of a thermoplastic resin other than the thermoplastic aromatic polycarbonate resin (A1) and the ethylene-based resin or modified olefin-based resin (B); (B) 0.5 to 30% by weight of an ethylene-based resin or modified olefin-based resin; and (C) 0 to 30% by weight of a filler.
摘要:
A thermoplastic resin composition suitable for profile extrusion, comprising:
(A1) 50 to 99.5% by weight of a thermoplastic aromatic polycarbonate resin; (A2) 0 to 40% by weight of a thermoplastic resin other than the thermoplastic aromatic polycarbonate resin (A1) and the ethylene-based resin or modified olefin-based resin (B); (B) 0.5 to 30% by weight of an ethylene-based resin or modified olefin-based resin; and (C) 0 to 30% by weight of a filler.
摘要:
The present invention relates to a resin composition for a mold, a mold constructed by using the composition and a molding method using the mold. This resin composition comprises a thermoplastic resin, an inorganic fibrous reinforcing material and an inorganic particulate filler, and has a bending strength of 1000 kgf/cm or higher, a modulus of elasticity in bending of 70000 kgf/cm or higher, and it can be cut and worked. The heat deformation temperature of the composition may be higher than 180 DEG C. With this composition it is possible to provide a core or a cavity in a mold which is cut and finished with a good dimensional precision, at low cost and in a short period and is durable and recyclable. The mold can be applied to various types of molding methods using various types of materials and when so used it can provide molded products with good precision and at low costs.
摘要:
The present invention generally relates to bioactive composites of polymer and glass and, more particularly, to bioactive implants. The present invention also relates to methods of manufacturing bioactive composites. The bioactive composite finds utility in a variety of load-bearing clinical applications including spine, orthopaedic and dental procedures.