Fiber-reinforced polypropylene resin composition and molded article thereof
A resin composition, polypropylene-based technology, applied in a fiber reinforcement field, capable of solving problems such as scratch resistance, deterioration of rigidity and heat resistance, undescribed texture transferability or touch, and difficulty in improving performance at the same time, Achieve high heat resistance, low shrinkage, and high impact strength
Active Publication Date: 2014-07-09
JAPAN POLYPROPYLENE CORP
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, texture transfer or feel was not described, so these levels are unknown
[0013] As described above, in order to improve its rigidity and impact strength, polypropylene-based resin compositions and molded articles thereof are often required to include fibers (fibrous fillers) such as glass fibers, which lead to texture transferability, scratch resistance and molded body surface The touch such as softness deteriorates, and in order to improve the touch, it is also required that the polypropylene-based resin composition and its molded body include elastomer or soft polyolefin in most cases, which leads to scratch resistance, rigidity and heat resistance deterioration
Therefore, it is difficult to simultaneously improve the above properties
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1 to 16 and comparative example 1 to 5
[0567] (1) Manufacture of fiber reinforced composition
[0568] Components (I) to (VII) were mixed with the following additives at the ratios shown in Table 3, kneaded and granulated under the following conditions.
[0569] In this production, 0.1 part by weight of IRGANOX1010 from BASF and 0.05 part by weight of IRGAFOS168 from BASF were added with respect to 100 parts by weight of the composition of components (I) to (VII) as a whole.
[0570] Mixing apparatus: "KZW-15-MG" type twin-screw extruder from Technovel Corporation.
[0571] Mixing conditions: temperature = 200° C., screw speed = 400 rpm, discharge rate = 3 kg / hour.
[0572] Component (II) was side-fed from the middle of the extruder. In the resin pellets (Examples 1 to 7 and 10 to 16), the average length of component (II) was in the range of 0.45 mm to 0.7 mm. In Examples 8 and 9, the amount of component (III-1) is shown as the amount to which component (III) in component (II-2) has been added, and in the absenc...
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Abstract
To provide a fiber-reinforced polypropylene resin composition that is low-contracting, has good surface texture transferability, scratch resistance, and molded appearance, produces a molded article surface that is smooth and soft, and has high hardness, high impact strength, and high heat resistance; a method for producing the same; and a molded article thereof. A fiber-reinforced polypropylene resin composition comprises a propylene-ethylene block copolymer that satisfies four conditions, including being obtained by sequential polymerization using a metallocene catalyst; predetermined fibers; and when necessary, a predetermined modified polyolefin, a thermoplastic elastomer that satisfies two conditions such as MFR, a predetermined polypropylene polymer resin, and a predetermined fatty acid amide.
Description
technical field [0001] The present invention relates to a fiber-reinforced polypropylene-based resin composition and a molded article thereof, and more particularly to a fiber-reinforced polypropylene-based resin composition having low shrinkage and a molded article thereof , excellent grain transferability, scratch resistance and molding appearance, can provide a molded body with smooth and soft touch on its surface without foaming, and has high rigidity, high impact strength and High heat resistance. Background technique [0002] Polypropylene-based resin compositions are resin compositions having excellent physical properties, moldability, recycling efficiency, and economic efficiency, and thus have wide applications. Polypropylene-based resin compositions such as polypropylene-based resins and composite polypropylene-based resins that are polypropylene-based resins reinforced with fillers such as glass fibers and elastomers (rubber), including molded bodies thereof, due...
Claims
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IPC IPC(8): C08L53/00C08J5/04C08K7/02C08K5/20C08L23/00C08L25/00
CPCC08L23/10C08L23/14C08L2314/06C08K7/02C08K7/06C08L51/06C08L53/00C08L2205/16C08L23/142C08K5/20C08L23/16C08L101/00Y10T428/24355C08K7/14
Inventor 近藤和匡增田宪二
Owner JAPAN POLYPROPYLENE CORP