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Polycarbonate resin composition

A technology of polycarbonate resin and resin composition, applied in the field of polycarbonate resin composition and optical components, capable of solving insufficient impact strength, heat resistance and anisotropy, insufficient anisotropy, impact strength and heat resistance reduction, etc., to achieve the effect of suppressing the reduction of optical properties, excellent rigidity and impact resistance, and improving impact resistance

Pending Publication Date: 2022-03-01
MITSUBISHI ENG PLASTICS CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The examples describe a polycarbonate resin composition in which glass fibers with a flat cross-section and glass flakes with a thickness of 5 μm are blended in a specific quantitative ratio, and further contain a phosphate-based flame retardant and polytetrafluoroethylene, but it can be said that Its anisotropy cannot be fully satisfied, and since the phosphorus-based flame retardant is used, the impact strength and heat resistance caused by plasticizing the polycarbonate resin are prone to decrease, so that the impact strength, heat resistance and various Insufficient anisotropy to satisfy

Method used

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  • Polycarbonate resin composition
  • Polycarbonate resin composition
  • Polycarbonate resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11

[0236] (Examples 1-11, Comparative Examples 1-11)

[0237] [Manufacture of resin composition pellets]

[0238] The above-mentioned components were blended at the ratios described in Table 2-3 (all parts by mass), uniformly mixed in a tumble mixer, fed from a hopper to an extruder, and melt-kneaded.

[0239] As an extruder, a twin-screw extruder (TEX25αIII, L / D=52.5) ​​manufactured by Nippon Steel Works Co., Ltd. was used, and melt extrusion was carried out under the conditions of a screw speed of 200 rpm, a barrel temperature of 280° C., and a discharge rate of 25 kg / hour. out. The extruded strands are quenched in a water tank and pelletized with a pelletizer.

[0240] After drying the pellets obtained in the above-mentioned production method at 120° C. for 5 hours, the NEX80 injection molding machine manufactured by Nissei Plastic Industry Co., Ltd. was used at a temperature of 280° C. Under the condition of a pressure of 90 MPa, it was molded into a molded product of an I...

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Abstract

Provided is a polycarbonate resin composition which is characterized by containing 1-50 parts by mass of a filler (B) having an average particle diameter of 0.1-10 [mu] m per 100 parts by mass of a polycarbonate resin (A), the content of the filler (B) being less than 10% by mass in the resin composition when the filler (B) contains a filler having an average particle diameter of more than 10 [mu] m, and the content of a phosphorus-based flame retardant being 2% or less in the resin composition when the filler (B) contains a phosphorus-based flame retardant.

Description

technical field [0001] The present invention relates to a polycarbonate resin composition and an optical component. More specifically, it relates to a polycarbonate resin composition and an optical component that are excellent in rigidity and impact resistance, exhibit low anisotropy, and are excellent in heat-and-moisture resistance. Background technique [0002] Polycarbonate resins have excellent mechanical properties and are widely used as engineering plastics. Various reinforcing agents and additives are compounded in order to improve their properties, especially mechanical properties, depending on the field of use. In addition, in fields requiring high mechanical strength and rigidity, operations using fibrous reinforcing materials such as glass fibers have been performed. However, a resin composition in which glass fibers are mixed with a polycarbonate resin has a disadvantage of producing anisotropy in molding shrinkage due to fiber orientation, although it is excell...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L23/02C08L35/00C08L51/06C08L27/18C08L51/04C08K3/34C08K7/06
CPCC08L69/00C08L2201/08C08L23/025C08L35/00C08L51/06C08L27/18C08L51/04C08K3/34C08K7/06C08L23/02C08L27/12C08L9/00C08L21/00C08L23/26C08K3/013C08K7/00
Inventor 广瀬晃司
Owner MITSUBISHI ENG PLASTICS CORP
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