Fiber-sizing agent, inorganic reinforcement material, resin composition, and molded article
AssigneeMitsui Chemicals, Inc.
InventorsHirotaka Kanaya, Kuniaki Kawabe, Yosuke Takahashi, Koji Matsunaga, Masaya Kusumoto, Takuya Tamura
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Abstract
The purpose of the present invention is to provide a fiber-sizing agent which when applied to an inorganic reinforcement material contained in a resin composition, can provide a molded article having excellent impact resistance and high surface gloss properties. The fiber-sizing agent according to the present invention contains a modified olefin wax (A), a polyolefin resin (B), and a silane-coupling agent (C), wherein the mass ratio (A)/(B) of the modified olefin wax (A) to the polyolefin resin (B) is in the range of 0.2-10.
Claims10
A resin composition comprising an inorganic reinforcing material (D) and a resin (E),
- wherein the resin (E) includes a thermoplastic resin selected from the group consisting of a polycarbonate resin, a polyester resin and a polyamide resin,
- wherein the inorganic reinforcing material (D) comprises an inorganic reinforcing material (D′) coated with a fiber-sizing agent, the fiber-sizing agent comprising a modified olefin wax (A), an unmodified polyolefin resin (B) and a silane coupling agent (C),
- wherein the modified olefin wax (A) is a modified product of an ethylene-based polymer (a) having ethylene-derived structural units of 70 mol % to 100 mol % based on the total of all monomers forming the ethylene-based polymer (a),
- wherein the unmodified polyolefin resin (B) is an ethylene-based polymer (b) having ethylene-derived structural units of 70 mol % to 100 mol % based on the total of all monomers forming the ethylene-based polymer (b), and
- wherein a mass ratio (A)/(B) of the modified olefin wax (A) to the unmodified polyolefin resin (B) is in the range of 0.2 to 10.
A fiber-sizing agent comprising a modified olefin wax (A), a polyolefin resin (B) and a silane coupling agent (C),
- wherein a mass ratio (A)/(B) of the modified olefin wax (A) to the polyolefin resin (B) is in the range of 0.2 to 10, and
- the modified olefin wax (A) is contained as a water-dispersible emulsion having an average particle diameter of 0.1 to 30 μm.
An inorganic reinforcing material (D) in which an inorganic reinforcing material (D′) is coated with the fiber-sizing agent,
- wherein the inorganic reinforcing material (D′) is a carbon fiber filament, and
- the inorganic reinforcing material (D) is a carbon fiber strand in which a plurality of the carbon fiber filaments are sized by the fiber-sizing agent, and
- wherein the fiber-sizing agent comprises a modified olefin wax (A), a polyolefin resin (B) and a silane coupling agent (C), and
- a mass ratio (A)/(B) of the modified olefin wax (A) to the polyolefin resin (B) is in the range of 0.2 to 10.
Dependencies are inferred from the claim text.