Injection molded article of fiber-reinforced polylactic acid resin

A polylactic acid resin, fiber reinforced technology, applied in the direction of coating, etc., can solve the problems of impossible to obtain mechanical strength and flame retardancy, reduction of the proportion of plant-based resin, reduction of reproducibility, etc., to achieve excellent and good reproducibility. Excellent mechanical strength and flame retardancy

Inactive Publication Date: 2010-03-31
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mixing a larger amount of polyphosphate-based flame retardant does make injection molded products more flame retardant, but at the same time brings problems to injection molded products, such as reduced mechanical strength, reduced proportion of plant-based resin, and reproducibility reduce
Hitherto, it has not been possible to obtain injection-molded articles of fiber-reinforced polylactic acid resins excellent in both mechanical strength and flame retardancy

Method used

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  • Injection molded article of fiber-reinforced polylactic acid resin
  • Injection molded article of fiber-reinforced polylactic acid resin
  • Injection molded article of fiber-reinforced polylactic acid resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] By mixing 68 parts by weight of polylactic acid (LACEA (registered trademark) (product number H-100; manufactured by Mitsui Chemicals, Inc.)), 30 parts by weight of PET (TOYOBO polyester filament yarn; cut Length (average) 7mm; fiber diameter (average) 20 μm; aspect ratio (average) 350), 2 parts by weight of TPP (manufactured by DAIHACHI CHEMICALINDUSTRY CO., LTD) as a monomer phosphoric acid ester to prepare the resin composition, and detect The mixing and molding temperature of the composition is determined. The results are listed in Table 1. The mixing and molding temperature is defined as the temperature at which the viscosity of the heated composition is 10 to 100 Pa·s. In Table 1, the addition rate refers to the ratio of the weight of monomeric phosphoric acid ester to the total weight of the resin composition.

Embodiment 2

[0093] By mixing 83 parts by weight of polylactic acid, 15 parts by weight of PPS (TORCON (registered trademark); manufactured by Toray Industries, Inc.; cut length (average) 7 mm; fiber diameter (average) 20 μm; aspect ratio (average) 350), 2 parts by weight of TPP as a monomeric phosphate ester to prepare a resin composition, and as in Example 1, the mixing and molding temperature of the composition were checked. The results are listed in Table 1.

Embodiment 3

[0095] By mixing 88 parts by weight of polylactic acid, 10 parts by weight of PI (P84, manufactured by TOYOBO CO., LTD. as reinforcing fibers; cut length (average) 7 mm; fiber diameter (average) 20 μm; aspect ratio (average) 350), 2 parts by weight of TPP as a monomeric phosphoric acid ester to prepare a resin composition, and detect the mixing and molding temperature of the composition as in Example 1. The results are listed in Table 1.

[0096] Table 1

[0097]

[0098] As shown in Table 1, the addition of the monomeric phosphates allowed the mixing temperature of each resin composition to be at least 50°C below the melting point of the reinforcing fibers.

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Abstract

Disclosed is an injection molded article of a fiber-reinforced polylactic acid resin, which is excellent in mechanical strength, flame retardancy and recyclability. Specifically disclosed is an injection molded article of a fiber-reinforced polylactic acid resin having an average plate thickness of 2.0 mm or more, which is characterized by being obtained by injection molding a resin composition containing the following components (1)-(3). (1) not less than 50 parts by mass of a polylactic acid resin (2) 10-25 parts by mass of a petroleum fiber having a melting point of 200-300 DEG C (3) 2-10 parts by mass of a monomeric phosphate ester.

Description

technical field [0001] The present invention relates to injection molded articles of fiber-reinforced polylactic acid resin. The injection molded article of the present invention composed of fiber-reinforced polylactic acid resin is excellent in mechanical strength (especially impact strength) and flame retardancy, and is suitable for various recording media (such as photographic photosensitive materials, magnetic recording materials and Optical recording materials), structural parts, containers, and functional parts for cameras, copiers, printers, photocopying equipment, printing machines, medical instruments, instruments for life sciences, information appliances, and the like. Background technique [0002] Biomass resins from biological sources including plants are being paid attention to as a new resin source, which may contribute to preventing global warming and establishing a good material circulation type society. Among them, polylactic acid resins are mass-produced, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04B29C45/00C08J5/04C08K5/521C08K7/02C08L101/16B29K67/00
CPCC08L81/04C08K7/02C08J5/046B29C45/0005C08L67/02C08K5/521C08L67/04C08L2205/16C08L79/08B29C45/0001C08L2666/14
Inventor 河崎英敏
Owner FUJIFILM CORP
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