Abstract:
A composite particulate material for resin reinforcement which comprises an inorganic particulate material (A) and an elastic polymer (B) having a glass transition temperature of -10.degree.C or below and also having functional groups capable of forming chemical bonds with resins to be reinforced, said components (A) and (B) accounting for 50-99 wt% and 50-1 wt%, respectively, of their total amount. A process for producing said composite particulate material. A reinforced resin composition incorporated with said composite particulate material. The resin composition yields molded articles which are improved in mutually contradicting properties (that is, impact strength vs. stiffness and elongation at break vs. heat resistance) and which have mechanical properties with less anisotropy. It offers good characteristic properties which are hardly attained by conventional engineering plastic materials.
Abstract:
A polyamide resin composition is formed by melt-kneading (A) 100 parts by weight of nylon resin, and (B) 5-150 parts by weight of at least one of a non-fibrous inorganic filler having an average particle diameter of 0.05-10 mu m and a fibrous inorganic filler, excluding glass fiber, having a fiber diameter of 0.05-10 mu m. In the polyamide resin composition, the amount of a polyamide resin component deposit remaining on the inorganic filler when the inorganic filler is recovered by dissolving the polyamide resin composition into hexafluoroisopropanol is at least 4 g/m per unit surface area of the inorganic filler measured by a BET method. The resin composition can be suitably formed, for example, by injection forming, extrusion or blow forming, into various vehicular exterior parts such as under-hood formed parts for motor vehicles and portable device casings.
Abstract:
Provided is a resin composition, comprising 90 to 50% by weight of (A) a polyamide having 7 or more average carbon atoms per amide functional group and containing no aromatic ring; 10 to 50% by weight of (B) a polyamide having an aromatic ring and being crystalline, based on 100% by weight of the total of the component (A) and the component (B); and 5 to 75 parts by weight of (C) a carbon fiber, based on 100 parts by weight of the polyamide comprising (A) and (B). Also provided are a resin composition that has excellent moldability, undergoes a decrease in rigidity and strength upon water absorption, which is a disadvantage of polyamide, to a small extent, and has excellent appearance, a pellet thereof, and a molded product thereof.
Abstract:
A composite particulate material for resin reinforcement comprises an inorganic particulate material (A) and an elastic polymer (B) having a glass transition temperature of -10°C or below and also having functional groups capable of forming chemical bonds with a resin to be reinforced. The components (A) and (B) account for 50-99 wt% and 50-1 wt%, respectively, of their total amount. The polymer (B) is prepared in presence of (A). This composite material can be used as a reinforcement for thermoplastic polymer(s).