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Molded article

A molded product, polyolefin resin technology, applied in the field of molded products in the resin department, can solve the problems of large cellulose aggregates, difficult resin compounds, lack of affinity for cellulose, etc., and achieve excellent recyclability and high-strength dimensions Excellent precision and acoustic characteristics

Active Publication Date: 2020-06-16
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, cellulose lacks affinity for highly hydrophobic resins such as polyolefin resins, and even when polyolefin resins are melt-kneaded with cellulose, large cellulose aggregates are produced
Therefore, even if the polyolefin resin and cellulose are melt-kneaded, it is difficult to fully exert the resin modification effect of cellulose to obtain a uniformly dispersed resin composite.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] A polyolefin resin composite material was prepared through the following steps.

[0135] 1) Preparation steps of polyolefin resin composite material

[0136] In the twin-screw extruder [KZW15TW-45MG-NH (trade name) manufactured by Technobel Corporation], the polyolefin resin was dropped into at an outlet temperature of 190° C. at a rate of 1000 g / hour, and passed through the second feeder at a rate of 110 g / hour. Add cellulose A at a speed of 200°C, add water at a rate of 98 g / hour using a liquid feeding pump, melt and knead the mixture satisfying the composition of Table 1 below at 200° C., and then extrude to prepare a polyolefin resin composite material. The screw speed was set at 100 rpm.

[0137] 2) Manufacturing steps of lamp body

[0138] The polyolefin resin composite material prepared in the above 1) was used for injection molding to produce a lamp body including a resin portion. In addition, the injection conditions are carried out under appropriate molding...

Embodiment 2～14、 comparative example 1～3

[0140] Except having adopted the composition of following Table 1, it carried out similarly to Example 1, and the polyolefin resin composite material of Examples 2-14 and Comparative Examples 1-3 was produced. Next, using this polyolefin resin composite material, a lamp body including a resin portion was prepared in the same manner as in Example 1. In addition, in Comparative Example 3, the mixing amount of water was too large, and the discharge amount of the extruder became unstable.

Embodiment 15

[0142] The steps of 1) in Example 1 were also carried out to prepare polyolefin resin composite materials.

[0143] 3) Manufacturing steps of the speaker assembly

[0144] The polyolefin resin composite material prepared by the method described above was injection molded to produce a speaker assembly including a resin part. In addition, the injection conditions were carried out under appropriate molding conditions commonly used in injection molding of speaker components.

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Abstract

The present invention relates to a molded article comprising a resinous part formed from a polyolefin resin composite material and having improved mechanical strength, the polyolefin resin composite material comprising a highly hydrophobic polyolefin resin and cellulose highly evenly integrated therewith and containing cellulose aggregates sufficiently reduced in size. The molded article comprisesa resinous part formed from a polyolefin resin composite material which comprises a polyolefin resin and cellulose, the amount of the cellulose being 10-150 parts by mass per 100 parts by mass of thepolyolefin resin, and which contains aggregates of the cellulose in an amount less than 20,000 [mu]m<2> in terms of area.

Description

technical field [0001] The present invention relates to a molded product including a resin part, such as a lamp body of a lamp, a speaker unit, a junction box, a connector, a pulley, and a shed film, and more particularly to a molded product including a resin part produced by injection molding, T-die molding, etc. . More specifically, the present invention relates to molded products such as a lamp body, a speaker unit, a junction box, a connector, a pulley, and a shed film for a lamp including a resin portion formed of a polyolefin resin composite material. Background technique [0002] In recent years, in order to achieve low fuel consumption of vehicles such as automobiles, further weight reduction of vehicles has been demanded. In order to reduce the weight of a vehicle, it is necessary not only to reduce the weight of large components such as the body of the vehicle, but also lamps such as headlights, vehicle speaker components that are part of the audio system installe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L1/02F21S41/19F21S41/39F21S41/50F21W107/10
CPCC08L1/00C08L23/00C08L101/00F21S45/00B27N3/002C08L23/02C08L2203/30C08L2201/06B27N9/00B27N3/28B27N1/02B27N5/00B27N5/02B27N3/04C08L1/02C08L51/06C08L101/025F21V15/01H01R13/504
Inventor 金宰庆须山健一中岛康雄小泽英史
Owner FURUKAWA ELECTRIC CO LTD
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